Towards Formative Research in TV for Development

ERIC Educational Resources Information Center

Mody, Bella

1976-01-01

Drawing on his experience with the Indian Satellite Instructional TV Experiment, the author discusses the type of training program needed by those conducting formative evaluation in that context. (BD)

The Effects of Formative Assessment on Academic Achievement, Attitudes toward the Lesson, and Self-Regulation Skills

ERIC Educational Resources Information Center

Ozan, Ceyhun; Kincal, Remzi Y.

2018-01-01

The purpose of this research is to examine the effects of formative assessment practices on students' academic achievement, attitudes toward lessons, and self-regulation skills in the fifth-grade social studies class. Mixed method research was used to conduct the study. The research group consisted of 45 students in the fifth grade of a secondary…

Measurement Properties of Two Innovative Item Formats in a Computer-Based Test

ERIC Educational Resources Information Center

Wan, Lei; Henly, George A.

2012-01-01

Many innovative item formats have been proposed over the past decade, but little empirical research has been conducted on their measurement properties. This study examines the reliability, efficiency, and construct validity of two innovative item formats--the figural response (FR) and constructed response (CR) formats used in a K-12 computerized…

Heuristic Task Analysis on E-Learning Course Development: A Formative Research Study

ERIC Educational Resources Information Center

Lee, Ji-Yeon; Reigeluth, Charles M.

2009-01-01

Utilizing heuristic task analysis (HTA), a method developed for eliciting, analyzing, and representing expertise in complex cognitive tasks, a formative research study was conducted on the task of e-learning course development to further improve the HTA process. Three instructional designers from three different post-secondary institutions in the…

Technology-Supported Formative and Summative Assessment of Collaborative Scientific Inquiry.

ERIC Educational Resources Information Center

Hickey, Daniel T.; DeCuir, Jessica; Hand, Bryon; Kyser, Brandon; Laprocina, Simona; Mordica, Joy

This study defined and validated a new set of dimensions, new anchoring descriptions, and a new rubric format for assessing participation in collaboration. One strand of the research explored the use of analog video-technology to conduct summative assessment of collaborative inquiry. The second strand of the research explored the use of video…

Formative Research on the Simplifying Conditions Method (SCM) for Task Analysis and Sequencing.

ERIC Educational Resources Information Center

Kim, YoungHwan; Reigluth, Charles M.

The Simplifying Conditions Method (SCM) is a set of guidelines for task analysis and sequencing of instructional content under the Elaboration Theory (ET). This article introduces the fundamentals of SCM and presents the findings from a formative research study on SCM. It was conducted in two distinct phases: design and instruction. In the first…

Toward Personal and Emotional Connectivity in Mobile Higher Education through Asynchronous Formative Audio Feedback

ERIC Educational Resources Information Center

Rasi, Päivi; Vuojärvi, Hanna

2018-01-01

This study aims to develop asynchronous formative audio feedback practices for mobile learning in higher education settings. The development was conducted in keeping with the principles of design-based research. The research activities focused on an inter-university online course, within which the use of instructor audio feedback was tested,…

Using protection motivation theory and formative research to guide an injury prevention intervention: increasing adherence to the North American Guidelines for Children's Agricultural Tasks.

PubMed

Ashida, Sato; Heaney, Catherine A; Kmet, Jennifer M; Wilkins, J R

2011-05-01

The North American Guidelines for Children's Agricultural Tasks (NAGCAT) were developed to reduce childhood agricultural injuries by assisting adults in assigning appropriate chores and providing needed supervision and training. To develop an effective intervention to increase adherence to NAGCAT among farm parents, formative research (focus groups and pilot-testing) was conducted. Protection motivation theory (PMT) was used to guide this research and inform intervention development. Focus group results suggested how PMT constructs might be addressed to increase adherence. A home visit intervention, using a standardized presentation in POWERPoint™, was developed to (a) introduce NAGCAT, (b) increase motivation to use NAGCAT and enhance safe work behaviors, and (c) ultimately reduce agricultural work-related injuries among youth. Process evaluation data suggests that the intervention was well received by farm parents. Conducting theory-guided formative research identified motivational barriers and strategies for overcoming these barriers that might not have been otherwise apparent.

Methodology for research I.

PubMed

Garg, Rakesh

2016-09-01

The conduct of research requires a systematic approach involving diligent planning and its execution as planned. It comprises various essential predefined components such as aims, population, conduct/technique, outcome and statistical considerations. These need to be objective, reliable and in a repeatable format. Hence, the understanding of the basic aspects of methodology is essential for any researcher. This is a narrative review and focuses on various aspects of the methodology for conduct of a clinical research. The relevant keywords were used for literature search from various databases and from bibliographies of the articles.

Testing Technology: Administrating Formative Mathematics Assessments in Kindergarten and First Grade

ERIC Educational Resources Information Center

Hill-Cunningham, Pamela Renee

2012-01-01

Research was conducted to examine the effectiveness of the use of handheld technology to administer mathematics assessments in kindergarten and 1 st grade classes in North Carolina. This research was a review of secondary data from the first year of implementation of the Mathematics Assessment Pilot Project conducted by the North Carolina…

An alternative model for postdoctoral education of nurses engaged in research with potentially vulnerable populations.

PubMed

Gennaro, Susan; Deatrick, Janet A; Dobal, May T; Jemmott, Loretta Sweet; Ball, Katherine R

2007-01-01

Post-doctoral education has become a necessity for new nursing doctoral graduates. However, post-doctoral positions are limited and nurse scientists may face barriers that make non-traditional programs necessary. This study describes the outcomes of the Summer Nursing Research Institute (SNRI), an alternative post-doctoral educational program, reports formative perceptions of SNRI participants, and illustrates the efficacy and limitations of the model with selected summative research related outcomes. Participants between 1997 and 2006 were asked to evaluate the experience while attending the Institute (formative evaluation) and an overall summative evaluation was also conducted. Evaluations indicate that participants gained knowledge, skills, and networking abilities in terms of conducting research with vulnerable populations. A program like the SNRI can be successful in widening the research pipeline, in imparting knowledge, and in fostering positive attitudes as well as in improving research skills.

Advancing the evidence base in cancer: psychosocial multicenter trials

PubMed Central

2012-01-01

Background The diagnosis and treatment of cancer is associated with significant distress and psychosocial morbidity. Although psychosocial interventions have been developed in an attempt to improve psychosocial outcomes in cancer patients and survivors, there is continued debate about whether there is adequate high-level evidence to establish the effectiveness of these interventions. The evidence base is limited as a result of numerous challenges faced by those attempting to conduct psychosocial intervention trials within the health system. Barriers include insufficient participant recruitment, difficulty generalizing from single-trial studies, difficulty in building and managing research teams with multidisciplinary expertise, lack of research design expertise and a lack of incentives for researchers conducting intervention research. To strengthen the evidence base, more intervention studies employing methodologically rigorous research designs are necessary. Methods In order to advance the evidence base of interventions designed to improve psychosocial outcomes for cancer patients and survivors, we propose the formation of a collaborative trials group that conducts multicenter trials to test the effectiveness of such interventions. Results Establishment of such a group would improve the quality of the evidence base in psychosocial research in cancer patients, by increasing support for conducting intervention research and providing intervention research training opportunities. A multidisciplinary collaborative group conducting multicenter trials would have the capacity to overcome many of the barriers that currently exist. Conclusions A stronger evidence base is necessary to identify effective psychosocial interventions for cancer patients. The proposed formation of a psycho-oncology collaborative trials group that conducts multicenter trials to test the effectiveness of psychosocial interventions would assist in achieving this outcome. PMID:22992443

Research in Review. Malnutrition and Children's Development.

ERIC Educational Resources Information Center

Stevens, Joseph H., Jr.; Baxter, Delia H.

1981-01-01

Indicates how various degrees of malnutrition affect children's development. Reviews research conducted in several developing countries and the United States, and describes the nutritional status of children in the United States. Implications for nutrition programs, research and policy formation are pointed out. (Author/RH)

The Formation of Trihalomethanes.

ERIC Educational Resources Information Center

Trussell, R. Rhodes; Umphres, Mark D.

1978-01-01

Reviewed are a number of factors important in the formation of trihalomethanes (THM) including the nature of aquatic humus and the influences of preozonation, bromide, pH, and chlorine. A brief investigation is also conducted into the kinetics of the THM reaction. Several major research needs are represented. (CS)

Systematic review of HIV prevention interventions in China: a health communication perspective.

PubMed

Xiao, Zhiwen; Noar, Seth M; Zeng, Lily

2014-02-01

To examine whether communication strategies and principles have been utilized in the HIV prevention intervention programs conducted in China. Comprehensive literature searches were conducted using PsycINFO, Medline, and Academic Search Complete with combinations of a number of keywords. Studies were included if they (1) were conducted in China and published prior to October 2011; (2) tested interventions promoting HIV/sexual risk reduction; and (3) reported empirical outcome evaluations on HIV knowledge, condom use and other condom-related variables. Data on 11 dimensions were extracted and analyzed, including formative research, theory, message targeting, messenger and channels, process evaluation, evaluation design, outcome measures. The majority of the 45 intervention studies were not theory-based, did not report conducting formative research or process evaluation, used pretest-posttest control group designs, combined nonmedia channels, printed and visual materials, and employed HIV knowledge and condom use as outcome measures. Many HIV prevention interventions in China have been successful in reducing HIV risk-related outcomes. This literature has its weaknesses; however, the current review illuminates gaps in the literature and points to important future directions for research.

Promoting Cognitive Health: A Formative Research Collaboration of the Healthy Aging Research Network

ERIC Educational Resources Information Center

Laditka, James N.; Beard, Renee L.; Bryant, Lucinda L.; Fetterman, David; Hunter, Rebecca; Ivey, Susan; Logsdon, Rebecca G.; Sharkey, Joseph R.; Wu, Bei

2009-01-01

Purpose: Evidence suggests that healthy lifestyles may help maintain cognitive health. The Prevention Research Centers Healthy Aging Research Network, 9 universities collaborating with their communities and the Centers for Disease Control and Prevention, is conducting a multiyear research project, begun in 2005, to understand how to translate this…

Rapid gas hydrate formation processes: Will they work?

DOE PAGES

Brown, Thomas D.; Taylor, Charles E.; Bernardo, Mark P.

2010-06-07

Researchers at DOE’s National Energy Technology Laboratory (NETL) have been investigating the formation of synthetic gas hydrates, with an emphasis on rapid and continuous hydrate formation techniques. The investigations focused on unconventional methods to reduce dissolution, induction, nucleation and crystallization times associated with natural and synthetic hydrates studies conducted in the laboratory. Numerous experiments were conducted with various high-pressure cells equipped with instrumentation to study rapid and continuous hydrate formation. The cells ranged in size from 100 mL for screening studies to proof-of-concept studies with NETL’s 15-Liter Hydrate Cell. The results from this work demonstrate that the rapid and continuousmore » formation of methane hydrate is possible at predetermined temperatures and pressures within the stability zone of a Methane Hydrate Stability Curve.« less

76 FR 23609 - New Proposed Collection; Comment Request; Biospecimen and Physical Measures Formative Research...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-27

... has obtained an OMB generic clearance to conduct survey and instrument design and administration... conduct the detailed preparation needed for a study of this size and complexity, the NCS was designed to... methodological studies conducted during the Vanguard phase will inform the implementation and analysis plan for...

Credible Phenomenological Research: A Mixed-Methods Study

ERIC Educational Resources Information Center

Flynn, Stephen V.; Korcuska, James S.

2018-01-01

The authors conducted a 3-phase investigation into the credible standards for phenomenological research practices identified in the literature and endorsed by a sample of counselor education qualitative research experts. Utilizing a mixed-methods approach, the findings offer evidence that professional counseling has a distinctive format in which…

Methane Recovery from Hydrate-bearing Sediments

DOE Office of Scientific and Technical Information (OSTI.GOV)

J. Carlos Santamarina; Costas Tsouris

2011-04-30

Gas hydrates are crystalline compounds made of gas and water molecules. Methane hydrates are found in marine sediments and permafrost regions; extensive amounts of methane are trapped in the form of hydrates. Methane hydrate can be an energy resource, contribute to global warming, or cause seafloor instability. This study placed emphasis on gas recovery from hydrate bearing sediments and related phenomena. The unique behavior of hydrate-bearing sediments required the development of special research tools, including new numerical algorithms (tube- and pore-network models) and experimental devices (high pressure chambers and micromodels). Therefore, the research methodology combined experimental studies, particle-scale numerical simulations,more » and macro-scale analyses of coupled processes. Research conducted as part of this project started with hydrate formation in sediment pores and extended to production methods and emergent phenomena. In particular, the scope of the work addressed: (1) hydrate formation and growth in pores, the assessment of formation rate, tensile/adhesive strength and their impact on sediment-scale properties, including volume change during hydrate formation and dissociation; (2) the effect of physical properties such as gas solubility, salinity, pore size, and mixed gas conditions on hydrate formation and dissociation, and it implications such as oscillatory transient hydrate formation, dissolution within the hydrate stability field, initial hydrate lens formation, and phase boundary changes in real field situations; (3) fluid conductivity in relation to pore size distribution and spatial correlation and the emergence of phenomena such as flow focusing; (4) mixed fluid flow, with special emphasis on differences between invading gas and nucleating gas, implications on relative gas conductivity for reservoir simulations, and gas recovery efficiency; (5) identification of advantages and limitations in different gas production strategies with emphasis; (6) detailed study of CH4-CO2 exchange as a unique alternative to recover CH4 gas while sequestering CO2; (7) the relevance of fines in otherwise clean sand sediments on gas recovery and related phenomena such as fines migration and clogging, vuggy structure formation, and gas-driven fracture formation during gas production by depressurization.« less

76 FR 74067 - Agency Forms Undergoing Paperwork Reduction Act Review

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-30

... Project Formative Research to Support the Development of Sickle Cell Disease Educational Messages and... seeks to improve the quality of life of people living with sickle cell disease (SCD). To accomplish this... associated with sickle cell disease. To develop valuable messages and materials, CDC will conduct formative...

Formative Assessment Design for PDA Integrated Ecology Observation

ERIC Educational Resources Information Center

Hung, Pi-Hsia; Lin, Yu-Fen; Hwang, Gwo-Jen

2010-01-01

Ubiquitous computing and mobile technologies provide a new perspective for designing innovative outdoor learning experiences. The purpose of this study is to propose a formative assessment design for integrating PDAs into ecology observations. Three learning activities were conducted in this study. An action research approach was applied to…

Reaching Students in Online Courses Using Alternative Formats

ERIC Educational Resources Information Center

Fidaldo, Patricia; Thormann, Joan

2017-01-01

This research was conducted to explore whether students enrolled in graduate level courses found some Universal Design for Learning (UDL) strategies useful and if they actually used them. The strategies we investigated were presenting course information in alternative formats including PowerPoints with voiceover, screencasts, and videos as an…

The Warm-Cold Study: A Classroom Demonstration of Impression Formation.

ERIC Educational Resources Information Center

Symbaluk, Diane G.; Cameron, Judy

1998-01-01

Describes a procedure for teaching experimental design to students in the social sciences. Argues that by replicating Solomon Asch's and H. Kelley's classic studies on impression formation, students learn how to conduct experiments, analyze data, and evaluate the significance of research. Provides instructions for implementing the strategy. (DSK)

Using Single-Case Design and Personalized Behavior Change Projects to Teach Research Methods

ERIC Educational Resources Information Center

Morgan, David L.

2009-01-01

Students in research methods courses, especially those taught in an intense format, might be hard pressed to actually conduct research studies due to logistics and time constraints. I describe the use of single-case research design and a personalized behavior project as an alternative research project for students in an undergraduate psychology…

21 CFR 312.23 - IND content and format.

Code of Federal Regulations, 2014 CFR

2014-04-01

... proposed changes in the research activity in accordance with the requirements of part 56. (v) A commitment... obligations for the conduct of any clinical study to a contract research organization, a statement containing the name and address of the contract research organization, identification of the clinical study, and...

21 CFR 312.23 - IND content and format.

Code of Federal Regulations, 2011 CFR

2011-04-01

... proposed changes in the research activity in accordance with the requirements of part 56. (v) A commitment... obligations for the conduct of any clinical study to a contract research organization, a statement containing the name and address of the contract research organization, identification of the clinical study, and...

21 CFR 312.23 - IND content and format.

Code of Federal Regulations, 2012 CFR

2012-04-01

... proposed changes in the research activity in accordance with the requirements of part 56. (v) A commitment... obligations for the conduct of any clinical study to a contract research organization, a statement containing the name and address of the contract research organization, identification of the clinical study, and...

21 CFR 312.23 - IND content and format.

Code of Federal Regulations, 2010 CFR

2010-04-01

... proposed changes in the research activity in accordance with the requirements of part 56. (v) A commitment... obligations for the conduct of any clinical study to a contract research organization, a statement containing the name and address of the contract research organization, identification of the clinical study, and...

21 CFR 312.23 - IND content and format.

Code of Federal Regulations, 2013 CFR

2013-04-01

... proposed changes in the research activity in accordance with the requirements of part 56. (v) A commitment... obligations for the conduct of any clinical study to a contract research organization, a statement containing the name and address of the contract research organization, identification of the clinical study, and...

Leveraging social and digital media for participant recruitment: A review of methods from the Bayley Short Form Formative Study.

PubMed

Burke-Garcia, Amelia; Mathew, Sunitha

2017-06-01

Social media is increasingly being used in research, including recruitment. For the Bayley Short Form Formative Study, which was conducted under the the National Children's Study, traditional methods of recruitment proved to be ineffective. Therefore, digital media were identified as potential channels for recruitment. Results included successful recruitment of over 1800 infant and toddler participants to the Study. This paper outlines the methods, results, and future research opportunities.

Using Formative Assessment to Support Complex Learning in Conditions of Social Adversity

ERIC Educational Resources Information Center

Crossouard, Barbara

2011-01-01

This article reports on research into formative assessment within a task design that produces multiple opportunities for teacher and pupil dialogue. It draws upon in-depth case studies conducted in schools in socially deprived areas of Scotland, using policy and documentary analysis, video-observation, and an iterative series of interviews with…

Formative assessment in the development of an obesity prevention component for the Expanded Food and Nutrition Education Program in Texas

USDA-ARS?s Scientific Manuscript database

This study conducted formative research (surveys, focus groups); to assess the nutrition education needs of clients in the Texas Expanded Food and Nutrition Education Program prior to curriculum revision. Current participants in the Expanded Food and Nutrition Education Program from 3 Texas cities (...

Development of Classification Thinking in Future Teachers: Technologies of Reflective Discussion

ERIC Educational Resources Information Center

Cao, Yonghui; Kurbanova, Ajslu T.; Salikhova, Nailia R.

2017-01-01

The main objective of the research is to create and approbate a new way of reflection formation in future teachers, which would increase the level of classifying thinking to the theoretical one. The "Formation of equivalence groups" technique was modified to conduct the experiment. It was carried out both individually and in…

"On the Level". Formative Evaluation: Coping With Stress. Research Report 72.

ERIC Educational Resources Information Center

Agency for Instructional Television, Bloomington, IN.

A formative evaluation was conducted of the instructional television program "Brad's Journey through Stress," from the Coping with Stress unit of "On the Level," a series of 12 lessons designed to aid secondary school students in dealing with personal and social growth. The evaluation involved 291 students in 9 classes in…

Consultation and Dissemination Research Strategy: 1974. Technical Report #22.

ERIC Educational Resources Information Center

Tharp, Roland G.; Gallimore, Ronald

This brief report outlines several of the Kamehameha Early Education Program (KEEP) dissemination formats completed, underway, or planned. One of these, the workshop format, was tested in a training program of several days conducted at KEEP. The workshop was designed to teach teachers to use social reinforcement techniques to increase student…

"On the Level". Formative Evaluation: Changing Family Relationships. Research Report 73.

ERIC Educational Resources Information Center

Agency for Instructional Television, Bloomington, IN.

A formative evaluation was conducted of the instructional television program "Daddy's Girl" from "On the Level," a series of 12 lessons designed to aid secondary school students in dealing with personal and social growth. Designed to teach that adolescents usually have to work out new relationships with their parents and that…

Transversal Traits in Science Education Research Relevant for Teaching and Research: A Meta-Interpretative Study

ERIC Educational Resources Information Center

Lopes, J. Bernardino; Silva, Antonio Alberto; Cravino, Jose P.; Costa, Nilza; Marques, Luis; Campos, Carlos

2008-01-01

This study is a meta-interpretative analysis that focuses on research conducted and published by other researchers. Concepts central to this study include global practical relevance, curriculum design, and formative situation. We analyzed 35 studies selected from 374 published studies in the years 2000 and 2001 in three journals referenced in the…

78 FR 32394 - Agency Information Collection Activities; Submission for Office of Management and Budget Review...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-30

... to account for the randomized, controlled, experimental design of the proposed research and..., the Agency undertook consumer research to evaluate alternatives (Refs. 1 to 3). More recently, FDA conducted qualitative consumer research on the format of the Nutrition Facts label on behalf of the Agency's...

77 FR 32120 - Agency Information Collection Activities; Proposed Collection; Comment Request; Experimental...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-05-31

... require, the Agency undertook consumer research to evaluate alternatives (Refs. 1 to 3). More recently, FDA conducted qualitative consumer research on the format of the Nutrition Facts label on behalf of... consumer research, in the Federal Register of November 2, 2007 (72 FR 62149) FDA issued an Advance Notice...

A Research Experience Using Portfolios for Assessing College Teaching

ERIC Educational Resources Information Center

Cisneros-Cohernour, Edith J.; Stake, Robert E.

2014-01-01

In this article, we use the findings of a study conducted in a university in the southeast of Mexico to examine strengths and limitations of portfolios to assess formatively the quality of teaching. The research is part of the study: Model for the Development and Evaluation of Academic Competencies, involving researchers from six Mexican…

"Yes, I Feel Stronger with More Confidence and Strength:" Examining the Experiences of Immigrant Latina Women (ILW) Participating in the Si, Yo Puedo Curriculum

ERIC Educational Resources Information Center

Marrs Fuchsel, Catherine L.

2014-01-01

In 2011-2013, a qualitative exploratory study was conducted to examine the experiences of 36 immigrant Latina women who participated in a culturally specific 11-week curriculum--Sí Yo Puedo--in a psycho-educational group format. Using action research as a research design, four groups were conducted over a 2-year period at a community health clinic…

Using formative evaluation in an implementation project to increase vaccination rates in high-risk veterans: QUERI Series

PubMed Central

Wallace, Carolyn M; Legro, Marcia W

2008-01-01

Background Implementation of research into practice in health care systems is a challenging and often unsuccessful endeavor. The United States Department of Veterans Affairs (VA) Quality Enhancement Research Initiative (QUERI) research teams include formative evaluations (FE) in their action-oriented VA implementation projects to identify critical information about the processes of implementation that can guide adjustments to project activities, in order to better meet project goals. This article describes the development and use of FE in an action-oriented implementation research project. Methods This two-year action-oriented implementation research project was conducted at 23 VA Spinal Cord Injury (SCI) Centers, and targeted patients, staff and the system of care, such as administration and information technology. Data for FE were collected by electronic and paper surveys, semi-structured and open-ended interviews, notes during conference calls, and exchange of e-mail messages. Specific questions were developed for each intervention (designed to improve vaccination rates for influenza in veterans with spinal cord injury and disorder); informants were selected for their knowledge of interventions and their use in SCI Centers. Results Data from FE were compiled separately for each intervention to describe barriers to progress and guide adjustments to implementation activities. These data addressed the processes of implementing the interventions, problem-solving activities and the status of interventions at SCI Centers. Conclusion Formative evaluations provided the project team with a broad view of the processes of implementing multi-targeted interventions as well as the evolving status of the related best practice. Using FE was useful, although the challenges of conducting FE for non-field researchers should be addressed. Work is needed to develop methods for conducting FE across multiple sites, as well as acknowledging variations in local contexts that affect implementation of interventions. PMID:18430201

76 FR 24497 - New Proposed Collection; Comment Request; Neuropsychosocial Measures Formative Research...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-02

.... The NCS has obtained an OMB generic clearance to conduct survey and instrument design and... NCS was designed to include a preliminary pilot study known as the Vanguard Study. The purpose of the... multiple methodological studies conducted during the Vanguard phase will inform the implementation and...

Kinetics and Mechanism of Chemical Marker Formation and Water-Activated Heat Generation

DTIC Science & Technology

1994-05-01

activated chemical heaters. It has recently been discovered at the Army’s Natick, Massachusetts Research, Development & Engineering Center that certain...FUNDING NUMBERS 0 i Kinetics and Mechanism of Chemical Marker Formation and Water-Activated Heat Generation ~~ 3 6. AUTHOR(S) I-GZ05 Kenneth Kustin DI N...unlimited. rpIC Q.UA y uI sECTED 5 13. ABSTRACT (Maximum 200 words) n Research has been conducted on two projects: intrinsic chemical markers and water

Development of a nutrition education intervention for food bank clients

USDA-ARS?s Scientific Manuscript database

The focus of this article is the development of a nutrition education intervention for food bank clients. Formative research using mixed-methods (qualitative and quantitative) and community-based participatory research principles was conducted to assess the nutrition education needs of clients obtai...

Formative Ethnographic Research to Improve Evaluation of a Novel Water System in Ghana

PubMed Central

Alcorn, Ted E.; Opryszko, Melissa C.; Schwab, Kellogg J.

2011-01-01

The accessibility of potable water is fundamental to public health. A private for-profit company is installing kiosk-based drinking-water systems in rural and peri-urban villages in Ghana, and we evaluated their performance. Preceding an observational study to measure the effect of these kiosks on the incidence of water-related disease in recipient communities, we conducted ethnographic research to assess local water-related practices and the ways these practices would affect adoption of the new technology. We conducted fieldwork in two communities in Ghana and interviewed stakeholders throughout the water sector. Our findings illustrate the complexity of water-related behaviors and indicate several factors that may sustain disease transmission despite the presence of the new technology. This formative ethnographic research also improved the precision of our subsequent evaluation of the intervention by providing a site-specific, culturally-appropriate knowledge base. This study demonstrates the value of incorporating qualitative research techniques into evaluations of water-related projects. PMID:21540392

Changing Boundaries--Shifting Identities: Strategic Interventions to Enhance the Future of Educational Research in Australia

ERIC Educational Resources Information Center

Harrison, Neil; Bennett, Sue; Bennett, Dawn; Bobis, Janette; Chan, Philip; Seddon, Terri; Shore, Sue

2013-01-01

This paper reflects on the geography of Australian educational research in the context of the ERA 2010 and 2012 assessments results. These results reflect significant changes to the nature of educational research over the past decades, where this research is conducted and by whom. We recap the historical changes to the formation of educational…

Development of Adolescent Moral and Civic Identity through Community Service: A Qualitative Study in Hong Kong

ERIC Educational Resources Information Center

Xu, Huixuan; Yang, Min

2018-01-01

This article draws on Marcia's model that defines four statuses of adolescents' identity formation to examine adolescent moral and civic identity formation. Interviews were conducted with 23 students at three Hong Kong senior secondary schools to address the following research question: How does community service help adolescents develop their…

"On the Level". Formative Evaluation: Alone vs. Lonely. Research Report 74.

ERIC Educational Resources Information Center

Agency for Instructional Television, Bloomington, IN.

A formative evaluation was conducted of the instructional television program "Alone vs. Lonely," from "On the Level," a series of 12 lessons designed to aid secondary school students in dealing with personal and social growth. The program is designed to teach that loneliness is normal and is felt by everyone, and to suggest…

Formative evaluation for promoting adoption of the DGA, 2005 among African American parents and children in the Lower Mississippi Delta

USDA-ARS?s Scientific Manuscript database

Formative research was conducted to increase adherence to the healthful food and physical activity patterns set forth in the Dietary Guidelines for Americans, 2005 (DGA, 2005) and thereby reduce weight gain and risk factors for obesity-related chronic diseases in African American parents and their c...

The effectiveness and feasibility of TREAT (Tailoring Research Evidence and Theory) journal clubs in allied health: a randomised controlled trial.

PubMed

Wenke, Rachel J; Thomas, Rae; Hughes, Ian; Mickan, Sharon

2018-05-09

Journal clubs (JC) may increase clinicians' evidence-based practice (EBP) skills and facilitate evidence uptake in clinical practice, however there is a lack of research into their effectiveness in allied health. We investigated the effectiveness of a structured JC that is Tailored According to Research Evidence And Theory (TREAT) in improving EBP skills and practice compared to a standard JC format for allied health professionals. Concurrently, we explored the feasibility of implementing TREAT JCs in a healthcare setting, by evaluating participating clinicians' perceptions and satisfaction. We conducted an explanatory mixed methods study involving a cluster randomised controlled trial with a nested focus group for the intervention participants. Nine JCs with 126 allied health participants were randomly allocated to receive either the TREAT or standard JC format for 1 h/month for 6 months. We conducted pre-post measures of EBP skills and attitudes using the EBP questionnaire and Assessing Competence in Evidence-Based Medicine tool and a tailored satisfaction and practice change questionnaire. Post-intervention, we also conducted a focus group with TREAT participants to explore their perceptions of the format. There were no significant differences between JC formats in EBP skills, knowledge or attitudes or influence on clinical practice, with participants maintaining intermediate level skills across time points. Participants reported significantly greater satisfaction with the organisation of the TREAT format. Participants in both groups reported positive changes to clinical practice. Perceived outcomes to the TREAT format and facilitating mechanisms were identified including the use of an academic facilitator, group appraisal approach and consistent appraisal tools which assisted skill development and engagement. It is feasible to implement an evidence-based JC for allied health clinicians. While clinicians were more satisfied with the TREAT format, it did not significantly improve their EBP skills, attitudes, knowledge and/or practice, when compared to the standard format. The use of an academic facilitator, group based critical appraisal, and the consistent use of appraisal tools were perceived as useful components of the JC format. A structured JC may maintain EBP skills in allied health clinicians and facilitate engagement, however additional training may be required to further enhance EBP skills. ACTRN12616000811404 Retrospectively registered 21 June 2016.

77 FR 49797 - Agency Forms Undergoing Paperwork Reduction Act Review

Federal Register 2010, 2011, 2012, 2013, 2014

2012-08-17

... Project Formative Research for the Development of CDC's Act Against AIDS Social Marketing Campaigns... study is to conduct interviews and focus groups in four rounds of data collections (exploratory research... period to develop various social marketing campaigns aimed at increasing HIV testing rates, increasing...

Improving a Case-Control Study of Multiple Sclerosis Using Formative Research

PubMed Central

Williamson, Dhelia M.; Wagner, Laurie; Henry, Judy P.

2015-01-01

Formative research (i.e. focus groups and key informant interviews) was conducted to understand risk perceptions and identify barriers to participation in a case-control study of environmental exposures and genetic susceptibility as risk factors for multiple sclerosis (MS). Individuals with MS were recruited to participate in a focus group discussion and individual interviews. Participants were asked to review and comment on study materials and process including participation, interview, genetic testing, confidentiality, and questionnaire. A structured discussion guide was used with all participants to ensure uniformity and coverage of all predetermined topics. Participants reported an increased likelihood of participation if they were informed about the study by their neurologist and not a government agency. All participants expressed willingness to provide a blood sample for genotyping but disagreed about the setting for the blood draw (at home or in a lab). Participants were concerned that they would not receive their individual genotyping results. The study protocol and materials were revised based on comments from the focus group participants. Formative research is an under-utilized resource for researchers conducting epidemiologic studies. Even with limited resources, piloting study materials with individuals similar to the proposed study population can provide opportunities to make modifications to effectively meet the needs of participants and promote participation and retention. PMID:25741529

The Value of Peer Feedback Opportunities for Students in Writing Intensive Classes

ERIC Educational Resources Information Center

Kennette, Lynne N.; Frank, Nichole M.

2013-01-01

The present study was conducted to examine the usefulness of peer feedback on APA-style research papers in a writing-intensive class. Subsequent to APA training, students were asked to review and provide feedback on a classmate's APA-style research report for both content and formatting. Performance on this research report was then compared to…

Education Course Syllabus Development, Thai Language Major According to Buddhism Way of Thailand

ERIC Educational Resources Information Center

Waree, Chaiwat

2016-01-01

This research aims to develop Education Course Syllabus, Thai language major, according to Buddhism way of Thailand by using Taba's Approach and to evaluate the efficiency of Education Course Syllabus, Thai language major, according to Buddhism way of Thailand. This research was conducted according to research and development format and its…

Reader Response to Front Pages with Modular Format and Color [and] Newspaper Errors: Source Perception, Reporter Response and Some Causes. American Newspaper Publishers Association (ANPA) News Research Report No. 35.

ERIC Educational Resources Information Center

Click, J. W.; And Others

Two studies were conducted, the first to determine reader response to newspaper front pages with modular format and color, and the second to examine source perception and reporter response to errors in news stories. Results of the first study revealed that respondents in three cities preferred modular front pages to other modern format pages and…

76 FR 23603 - New Proposed Collection; Comment Request; Environmental Science Formative Research Methodology...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-27

... generic clearance to conduct survey and instrument design and administration, focus groups, cognitive... study of this size and complexity, the NCS was designed to include a preliminary pilot study known as... the Main Study. At every phase of the NCS, the multiple methodological studies conducted during the...

Toolsets for Airborne Data (TAD): Improving Machine Readability for ICARTT Data Files

NASA Astrophysics Data System (ADS)

Northup, E. A.; Early, A. B.; Beach, A. L., III; Kusterer, J.; Quam, B.; Wang, D.; Chen, G.

2015-12-01

NASA has conducted airborne tropospheric chemistry studies for about three decades. These field campaigns have generated a great wealth of observations, including a wide range of the trace gases and aerosol properties. The ASDC Toolsets for Airborne Data (TAD) is designed to meet the user community needs for manipulating aircraft data for scientific research on climate change and air quality relevant issues. TAD makes use of aircraft data stored in the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) file format. ICARTT has been the NASA standard since 2010, and is widely used by NOAA, NSF, and international partners (DLR, FAAM). Its level of acceptance is due in part to it being generally self-describing for researchers, i.e., it provides necessary data descriptions for proper research use. Despite this, there are a number of issues with the current ICARTT format, especially concerning the machine readability. In order to overcome these issues, the TAD team has developed an "idealized" file format. This format is ASCII and is sufficiently machine readable to sustain the TAD system, however, it is not fully compatible with the current ICARTT format. The process of mapping ICARTT metadata to the idealized format, the format specifics, and the actual conversion process will be discussed. The goal of this presentation is to demonstrate an example of how to improve the machine readability of ASCII data format protocols.

77 FR 14530 - National Institute of Child Health and Human Development; New Proposed Collection; Comment...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-12

... methodological studies conducted during the Vanguard phase will inform the implementation and analysis plan for... Research Methodology Studies for the National Children's Study SUMMARY: In compliance with the requirement... Collection: Title: Environmental Science Formative Research Methodology Studies for the National Children's...

Trimester Schedule. Research Brief

ERIC Educational Resources Information Center

Education Partnerships, Inc., 2012

2012-01-01

Why do a trimester schedule? With the advent of block scheduling, many high schools conducted research on utilizing that plan in a trimester format. There appeared to be three issues that most schools faced: (1) How to provide substantive instructional time that was not fragmented?; (2) How does the school climate contribute positively to…

Technical Manual. The ACT®

ERIC Educational Resources Information Center

ACT, Inc., 2014

2014-01-01

This manual contains technical information about the ACT® college readiness assessment. The principal purpose of this manual is to document the technical characteristics of the ACT in light of its intended purposes. ACT regularly conducts research as part of the ongoing formative evaluation of its programs. The research is intended to ensure that…

Examination of Student Outcomes in Play Therapy: A Qualitative Case Study Design

ERIC Educational Resources Information Center

Dillman Taylor, Dalena L.; Blount, Ashley J.; Bloom, Zachary

2017-01-01

Outcome research examining the effectiveness of teaching methods in counselor education is sparse. The researchers conducted a qualitative investigation utilizing an instrumental case study to examine the influence of a constructivist-developmental format on a play therapy counseling course in a large CACREP accredited university in the…

Examining the Use of Audience Response Systems in Secondary School Classrooms: A Formative Analysis

ERIC Educational Resources Information Center

Kay, Robin; LeSage, Ann; Knaack, Liesel

2010-01-01

To date, extensive research has been done on the use of Audience Response Systems (ARSs) in colleges and universities, but not in secondary school schools. The purpose of this study was to conduct a detailed formative analysis on the benefits, challenges, and use of ARSs from the perspective of 659 secondary school students. Key benefits reported…

Europe Report, Science and Technology.

DTIC Science & Technology

1986-09-29

for example, research is being conducted on the synthesis of antibiotics from slime bacteria (myxobacteria), the formation of pigments with...nannocystis, and the formation of steroids. In cooperation with the enzyme technology division, work is also being done on cofactor regeneration in L-amino...also supporting work in product development at Asea Cerama in Robertfors, where they are working with silicon carbide and zirconium dioxide. 12507

Multi-agent simulation of the von Thunen model formation mechanism

NASA Astrophysics Data System (ADS)

Tao, Haiyan; Li, Xia; Chen, Xiaoxiang; Deng, Chengbin

2008-10-01

This research tries to explain the internal driving forces of circular structure formation in urban geography via the simulation of interaction between individual behavior and market. On the premise of single city center, unchanged scale merit and complete competition, enterprise migration theory as well, an R-D algorithm, that has agents searched the best behavior rules in some given locations, is introduced with agent-based modeling technique. The experiment conducts a simulation on Swarm platform, whose result reflects and replays the formation process of Von Thünen circular structure. Introducing and considering some heterogeneous factors, such as traffic roads, the research verifies several landuse models and discusses the self-adjustment function of price mechanism.

NRC/AMRMC Resident Research Associateship Program

DTIC Science & Technology

2017-03-01

tube formation in vitro. 4) Replacing amino acids in some peptides with D-amino acids leads to improved antibacterial and anti-biofilm activity . 5...period, the National Academies of Sciences, Engineering, and Medicine (the Academies) NRC conducted the following activities in support of the...of all active Research Advisers, current Adviser contact information and details of each Research Opportunity. Processing and Review of Applications

Report on Users' Satisfaction with Services Provided by Institutional Research. Research Report.

ERIC Educational Resources Information Center

Bashford, Joanne

The Office of Institutional Research (IR) at Miami-Dade Community College (M-DCC) (Florida) offers the results of a survey regarding the use of the office's services. Instead of using hard copy format as in the past, the current survey was conducted online. An e-mail message requesting participation was sent to the 3,498 employees with e-mail…

Hydrogeologic framework of fractured sedimentary rock, Newark Basin, New Jersey

USGS Publications Warehouse

Lacombe, Pierre J.; Burton, William C.

2010-01-01

The hydrogeologic framework of fractured sedimentary bedrock at the former Naval Air Warfare Center (NAWC), Trenton, New Jersey, a trichloroethylene (TCE)-contaminated site in the Newark Basin, is developed using an understanding of the geologic history of the strata, gamma-ray logs, and rock cores. NAWC is the newest field research site established as part of the U.S. Geological Survey Toxic Substances Hydrology Program, Department of Defense (DoD) Strategic Environmental Research and Development Program, and DoD Environmental Security Technology Certification Program to investigate contaminant remediation in fractured rock. Sedimentary bedrock at the NAWC research site comprises the Skunk Hollow, Byram, and Ewing Creek Members of the Lockatong Formation and Raven Rock Member of the Stockton Formation. Muds of the Lockatong Formation that were deposited in Van Houten cycles during the Triassic have lithified to form the bedrock that is typical of much of the Newark Basin. Four lithotypes formed from the sediments include black, carbon-rich laminated mudstone, dark-gray laminated mudstone, light-gray massive mudstone, and red massive mudstone. Diagenesis, tectonic compression, off-loading, and weathering have altered the rocks to give some strata greater hydraulic conductivity than other strata. Each stratum in the Lockatong Formation is 0.3 to 8 m thick, strikes N65 degrees E, and dips 25 degrees to 70 degrees NW. The black, carbon-rich laminated mudstone tends to fracture easily, has a relatively high hydraulic conductivity and is associated with high natural gamma-ray count rates. The dark-gray laminated mudstone is less fractured and has a lower hydraulic conductivity than the black carbon-rich laminated mudstone. The light-gray and the red massive mudstones are highly indurated and tend to have the least fractures and a low hydraulic conductivity. The differences in gamma-ray count rates for different mudstones allow gamma-ray logs to be used to correlate and delineate the lithostratigraphy from multiple wells. Gamma-ray logs and rock cores were correlated to develop a 13-layer gamma-ray stratigraphy and 41-layer lithostratigraphy throughout the fractured sedimentary rock research site. Detailed hydrogeologic framework shows that black carbon-rich laminated mudstones are the most hydraulically conductive. Water-quality and aquifer-test data indicate that groundwater flow is greatest and TCE contamination is highest in the black, carbon- and clay-rich laminated mudstones. Large-scale groundwater flow at the NAWC research site can be modeled as highly anisotropic with the highest component of permeability occurring along bedding planes.

Does Digital Competence and Occupational Setting Influence MOOC Participation? Evidence from a Cross-Course Survey

ERIC Educational Resources Information Center

Castaño-Muñoz, Jonatan; Kreijns, Karel; Kalz, Marco; Punie, Yves

2017-01-01

While MOOCs are recognized nowadays as a potential format for professional development and lifelong learning, little research has been conducted on the factors that influence MOOC participation of professionals and unemployed in MOOCs. Based on a framework developed earlier, we conducted a study, which focused on the influence of background…

A formative research-guided educational intervention to improve the knowledge and attitudes of seniors towards influenza and pneumococcal vaccinations.

PubMed

Ho, Hanley J; Chan, Yin Ying; Ibrahim, Muhamad Alif Bin; Wagle, Anurupa A; Wong, Christina M; Chow, Angela

2017-11-07

Adult influenza and pneumococcal vaccination rates in Singapore are low, and factors influencing knowledge and attitudes of seniors towards influenza, pneumonia and their respective vaccines are not well-known. Our study aims to understand the barriers and facilitators towards getting influenza and pneumococcal vaccinations among seniors in Singapore, and subsequently inform the conduct of a relevant community-based educational intervention, as well as evaluate the intervention outcomes. We performed a mixed methods study with two components: Firstly, formative research was conducted among community-dwelling seniors, using focus group discussions (FGDs), to understand their knowledge and attitudes towards influenza, pneumonia and their respective vaccines. Next, a quantitative study was conducted to evaluate knowledge of seniors and the effectiveness of an educational intervention. Four FGDs were organised with 32 participants, who were predominantly female, of lower educational background, and residing in government rental flats. Participants had varying levels of knowledge and many misconceptions about influenza, pneumonia and their respective vaccinations, with concerns about side effects and vaccine effectiveness. The formative research results were used to inform a community-based educational intervention for seniors. Our subsequent evaluation included 604 elderly participants, mainly from lower educational and socio-economic strata, who initially demonstrated poor knowledge scores (median score 5 out of 9, IQR 4-5). Following our intervention, median knowledge score improved to 7 (IQR 6-8) (p < .0001). Significant improvements in knowledge scores were observed across genders, age strata, education levels, and housing types. Our formative research identified knowledge gaps among community-dwelling seniors which affected their attitudes towards vaccination uptake. Key findings were taken into consideration when implementing the educational intervention. Our community-based intervention was effective in improving knowledge and attitudes, and could be used as a cue to action for short-term behaviour changes. Copyright © 2017 Elsevier Ltd. All rights reserved.

Closing the loop: an interactive action-research conference format for delivering updated medical information while eliciting Latina patient/family experiences and psychosocial needs post-genetic cancer risk assessment.

PubMed

Macdonald, Deborah J; Deri, Julia; Ricker, Charité; Perez, Martin A; Ogaz, Raquel; Feldman, Nancy; Viveros, Lori A; Paz, Benjamin; Weitzel, Jeffrey N; Blazer, Kathleen R

2012-09-01

A patient/family-centered conference was conducted at an underserved community hospital to address Latinas' post-genetic cancer risk assessment (GCRA) medical information and psychosocial support needs, and determine the utility of the action research format. Latinas seen for GCRA were recruited to a half-day conference conducted in Spanish. Content was partly determined from follow-up survey feedback. Written surveys, interactive discussions, and Audience Response System (ARS) queries facilitated the participant-healthcare professional action research process. Analyses included descriptive statistics and thematic analysis. The 71 attendees (41 patients and 27 relatives/friends) were primarily non-US born Spanish-speaking females, mean age 43 years. Among patients, 73 % had a breast cancer history; 85 % had BRCA testing (49 % BRCA+). Nearly all (96 %) attendees completed the conference surveys and ARS queries; ≥48 % participated in interactive discussions. Most (95 %) agreed that the format met their personal interests and expectations and provided useful information and resources. Gaps/challenges identified in the GCRA process included pre-consult anxiety, uncertainty about reason for referral and expected outcomes, and psychosocial needs post-GCRA, such as absorbing and disseminating risk information to relatives and concurrently coping with a recent cancer diagnosis. The combined action research and educational conference format was innovative and effective for responding to continued patient information needs and addressing an important data gap about support needs of Latina patients and family members following genetic cancer risk assessment. Findings informed GCRA process improvements and provide a basis for theory-driven cancer control research.

"Dancing on the edge of research" - What is needed to build and sustain research capacity within the massage therapy profession? A formative evaluation.

PubMed

Kania-Richmond, Ania; Menard, Martha B; Barberree, Beth; Mohring, Marvin

2017-04-01

Conducting research on massage therapy (MT) continues to be a significant challenge. To explore and identify the structures, processes, and resources required to enable viable, sustainable and high quality MT research activities in the Canadian context. Academically-based researchers and MT professionals involved in research. Formative evaluation and a descriptive qualitative approach were applied. Five main themes regarding the requirements of a productive and sustainable MT research infrastructure in Canada were identified: 1) core components, 2) variable components, 3) varying perspectives of stakeholder groups, 4) barriers to creating research infrastructure, and 5) negative metaphors. In addition, participants offered a number of recommendations on how to develop such an infrastructure. While barriers exist that require attention, participants' insights suggest there are various pathways through which a productive and sustainable MT research infrastructure can be achieved. Copyright © 2016 Elsevier Ltd. All rights reserved.

Evolution Perception with Metaphors

ERIC Educational Resources Information Center

Yilmaz, Fatih

2016-01-01

The main objective of this research is to find out how the teacher candidates who graduated from the Faculty of Theology and study in pedagogical formation program perceive the theory of evolution. Having a descriptive characteristic, this research is conducted with 63 Faculty of Theology graduate teacher candidates of which 36 is women and 27 is…

Analysis of Computer Algebra System Tutorials Using Cognitive Load Theory

ERIC Educational Resources Information Center

May, Patricia

2004-01-01

Most research in the area of Computer Algebra Systems (CAS) has been designed to compare the effectiveness of instructional technology to traditional lecture-based formats. While results are promising, research also indicates evidence of the steep learning curve imposed by the technology. Yet no studies have been conducted to investigate this…

A Critical Question: Can We Trust Smartphone Survey Data?

ERIC Educational Resources Information Center

Tuncer, Murat

2017-01-01

The main aim of this study is to determine whether a significant difference exits among data collection with printed materials and with smart phones. The research was conducted with 282 teacher candidates who take pedagogical formation training. Three data collection tools were used throughout the study. As the results of the current research, no…

A Cross-Cultural Approach to Understanding Entrepreneurial Intention

ERIC Educational Resources Information Center

Moriano, Juan A.; Gorgievski, Marjan; Laguna, Mariola; Stephan, Ute; Zarafshani, Kiumars

2012-01-01

The current research aims to shed light on the role of culture in the formation of career intentions. It draws on the Theory of Planned Behavior (TPB; Ajzen), which has been widely employed to predict intentions, including entrepreneurial career intentions, but past research has almost exclusively been conducted in "Western" countries.…

Exploring the Artwork in Picturebooks with Middle Years Students

ERIC Educational Resources Information Center

Pantaleo, Sylvia

2014-01-01

Picturebooks were one format of multimodal text used during the classroom-based research that is featured in this article. Although the research conducted with a class of grade 7 students had several overarching purposes, the two most relevant to this article were to investigate student development of visual meaning-making skills and competencies…

Surprising the Writer: Discovering Details through Research and Reading.

ERIC Educational Resources Information Center

Broaddus, Karen; Ivey, Gay

2002-01-01

Describes how students parallel the process of author Megan McDonald in conducting research and collecting information to provide ideas for the form and content of their writing. Notes that guiding students to record and organize information in a graphic format helps them to transfer those interesting details to new types of writing. (SG)

Online surveys for BGLT research: issues and techniques.

PubMed

Riggle, Ellen D B; Rostosky, Sharon S; Reedy, C Stuart

2005-01-01

Online surveys are becoming increasingly popular for accessing less visible and decentralized populations, including bisexual, gay, lesbian and transgender (BGLT) populations. Advances in technology and convenience for the both the researcher and the participant have facilitated this trend. In this paper, we explore issues related to conducting BGLT survey research online, such as making decisions about survey formats, target populations and recruitment, compensation, access.

Sector Differences in the Role of Institutional Research in Informing Decision Making and Governance in Higher Education

ERIC Educational Resources Information Center

Coughlin, Mary Ann; Hoey, Joseph; Hirano-Nakanishi, Marsha

2009-01-01

The intent of the authors in preparing this paper is to compare and contrast the roles of Institutional Research in informing decision making and governance in higher education. Using a case study format the authors will provide an example of a research project conducted within each of the following sectors of United States higher education…

Highly Conductive Thin Uniform Gold-Coated DNA Nanowires.

PubMed

Stern, Avigail; Eidelshtein, Gennady; Zhuravel, Roman; Livshits, Gideon I; Rotem, Dvir; Kotlyar, Alexander; Porath, Danny

2018-06-01

Over the past decades, DNA, the carrier of genetic information, has been used by researchers as a structural template material. Watson-Crick base pairing enables the formation of complex 2D and 3D structures from DNA through self-assembly. Various methods have been developed to functionalize these structures for numerous utilities. Metallization of DNA has attracted much attention as a means of forming conductive nanostructures. Nevertheless, most of the metallized DNA wires reported so far suffer from irregularity and lack of end-to-end electrical connectivity. An effective technique for formation of thin gold-coated DNA wires that overcomes these drawbacks is developed and presented here. A conductive atomic force microscopy setup, which is suitable for measuring tens to thousands of nanometer long molecules and wires, is used to characterize these DNA-based nanowires. The wires reported here are the narrowest gold-coated DNA wires that display long-range conductivity. The measurements presented show that the conductivity is limited by defects, and that thicker gold coating reduces the number of defects and increases the conductive length. This preparation method enables the formation of molecular wires with dimensions and uniformity that are much more suitable for DNA-based molecular electronics. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Contribution to "AIAA Aerospace Year in Review" article

NASA Technical Reports Server (NTRS)

Grugel, Richard N.; Downey, J. Patton

2012-01-01

The NASA Marshall Space Flight Center Microgravity Science Program is dedicated to promoting our understanding of materials processing by conducting relevant experiments in the microgravity environment and supporting related modeling efforts with the intent of improving ground-based practices. Currently funded investigations include research on dopant distribution and defect formation in semiconductors, microstructural development and transitions in dendritic casting alloys, coarsening phenomena, competition between thermal and kinetic phase formation, and the formation of glassy vs. crystalline material. NASA Microgravity Materials Science Principle Investigators are selected for funding either through a proposal in response to a NASA Research Announcement or by collaborating on a team that has successfully proposed to a foreign space agency research announcement. In the latter case, a US investigator can then apply to NASA for funding through an unsolicited proposal. The International Space Station (ISS) facilities used for the experimental investigations are provided primarily by partnering with foreign agencies and often US investigators are working as a part of a larger team studying a specific area of materials science. Facilities for conducting experiments aboard the ISS include the European Space Agency (ESA) Low Gradient Facility (LGF) and the Solidification and Quench (SQF) modular inserts to the Materials Research Rack/Materials Science Laboratory and are primarily used for controlled solidification studies. The French Space Agency (CNES) provided DECLIC facility allows direct observation of morphological development in transparent materials that solidify analogously to metals. The ESA provided Electro ]Magnetic Levitator (EML) is designed to levitate, melt and then cool samples in order to determine material properties, study nucleation behavior, and document phase transitions. Finally, the Microgravity Science Glovebox (MSG) serves as a onboard facility for supporting the hardware required to conduct a number of smaller, short-term investigations.

Formative research for the development of an interactive web-based sexually transmitted disease management intervention for young women.

PubMed

Royer, Heather R; Fernandez-Lambert, Katherin M; Moreno, Megan A

2013-09-01

Sexually transmitted diseases are common among young women and effective self-management is foundational to improving health outcomes and preventing negative sequelae. Advances in technology create the opportunity for innovative delivery methods of self-management interventions. However, it is essential to conduct formative research with the target population to identify both the needs and the preferences for the content and delivery method of a sexually transmitted disease self-management intervention prior to intervention development. Eight focus groups were conducted with 35 young women between 18 and 24 years of age. We found that young women strongly support the use of a Web-based intervention to provide sexually transmitted disease self-management guidance. Women were interested in receiving comprehensive management information from the perspective of both clinicians and other women who have experienced a sexually transmitted disease. There was a clear interest in incorporating new media into the Web-based intervention to allow for communication with providers as well as to create opportunities for social networking between women. This formative research provides critical information about the content and delivery method of a self-management intervention and gives direction for intervention development that is inclusive of varying types of new media to allow for connectivity among users, their peers, and clinicians.

The functional properties of chitosan-glucose-asparagine Maillard reaction products and mitigation of acrylamide formation by chitosans.

PubMed

Sung, Wen-Chieh; Chang, Yu-Wei; Chou, Yu-Hao; Hsiao, Hsin-I

2018-03-15

This research aims to clarify the interactions that occur in a food model system consisting of glucose, asparagine and chitosans. Low molecular weight chitosan exerted a potent inhibitory effect (46.8%) on acrylamide and Maillard reaction products (MRPs) (>52.6%), respectively. Compared to a previous study conducted using the fructose system, the novel findings of this research demonstrate that the formation of acrylamide and Maillard reaction products was lower with glucose than with fructose when they were used as reducing sugars in food model systems. Copyright © 2017 Elsevier Ltd. All rights reserved.

Print versus electronic journals: a preliminary investigation into the effect of journal format on research processes*

PubMed Central

Sathe, Nila A.; Grady, Jenifer L.; Giuse, Nunzia B.

2002-01-01

Purpose: To begin investigating the impact of electronic journals on research processes such as information seeking, the authors conducted a pilot journal-use study to test the hypothesis that patrons use print and electronic journals differently. Methodology: We placed fifteen high-use print titles also available in electronic format behind the circulation desk; patrons were asked to complete a survey upon requesting a journal. We also conducted a parallel survey of patrons using library computers. Both surveys asked patrons to identify themselves by user category and queried them about their journal use. Results: During the month-long study, patrons completed sixty-nine surveys of electronic and ninety surveys of print journal use. Results analysis indicated that fellows, students, and residents preferred electronic journals, and faculty preferred print journals. Patrons used print journals for reading articles and scanning contents; they employed electronic journals for printing articles and checking references. Users considered electronic journals easier to access and search than print journals; however, they reported that print journals had higher quality text and figures. Discussion/Conclusion: This study is an introductory step in examining how electronic journals affect research processes. Our data revealed that there were distinct preferences in format among categories. In addition to collection management implications for libraries, these data also have implications for publishers and educators; current electronic formats do not facilitate all types of uses and thus may be changing learning patterns as well. PMID:11999183

Estimating Hydraulic Conductivities in a Fractured Shale Formation from Pressure Pulse Testing and 3d Modeling

NASA Astrophysics Data System (ADS)

Courbet, C.; DICK, P.; Lefevre, M.; Wittebroodt, C.; Matray, J.; Barnichon, J.

2013-12-01

In the framework of its research on the deep disposal of radioactive waste in shale formations, the French Institute for Radiological Protection and Nuclear Safety (IRSN) has developed a large array of in situ programs concerning the confining properties of shales in their underground research laboratory at Tournemire (SW France). One of its aims is to evaluate the occurrence and processes controlling radionuclide migration through the host rock, from the disposal system to the biosphere. Past research programs carried out at Tournemire covered mechanical, hydro-mechanical and physico-chemical properties of the Tournemire shale as well as water chemistry and long-term behaviour of the host rock. Studies show that fluid circulations in the undisturbed matrix are very slow (hydraulic conductivity of 10-14 to 10-15 m.s-1). However, recent work related to the occurrence of small scale fractures and clay-rich fault gouges indicate that fluid circulations may have been significantly modified in the vicinity of such features. To assess the transport properties associated with such faults, IRSN designed a series of in situ and laboratory experiments to evaluate the contribution of both diffusive and advective process on water and solute flux through a clay-rich fault zone (fault core and damaged zone) and in an undisturbed shale formation. As part of these studies, Modular Mini-Packer System (MMPS) hydraulic testing was conducted in multiple boreholes to characterize hydraulic conductivities within the formation. Pressure data collected during the hydraulic tests were analyzed using the nSIGHTS (n-dimensional Statistical Inverse Graphical Hydraulic Test Simulator) code to estimate hydraulic conductivity and formation pressures of the tested intervals. Preliminary results indicate hydraulic conductivities of 5.10-12 m.s-1 in the fault core and damaged zone and 10-14 m.s-1 in the adjacent undisturbed shale. Furthermore, when compared with neutron porosity data from borehole logging, porosity varies by a factor of 2.5 whilst hydraulic conductivity varies by 2 to 3 orders of magnitude. In addition, a 3D numerical reconstruction of the internal structure of the fault zone inferred from borehole imagery has been built to estimate the permeability tensor variations. First results indicate that hydraulic conductivity values calculated for this structure are 2 to 3 orders of magnitude above those measured in situ. Such high values are due to the imaging method that only takes in to account open fractures of simple geometry (sine waves). Even though improvements are needed to handle more complex geometry, outcomes are promising as the fault damaged zone clearly appears as the highest permeability zone, where stress analysis show that the actual stress state may favor tensile reopening of fractures. Using shale samples cored from the different internal structures of the fault zone, we aim now to characterize the advection and diffusion using laboratory petrophysical tests combined with radial and through-diffusion experiments.

A Formative Evaluation of the Team Advisory Program at Boston English High School from the Perspective of the Program's Advisors

ERIC Educational Resources Information Center

Cartin, Gregory Edward

2012-01-01

The purpose of this study was to conduct a formative evaluation of the efficacy of the Team Advisory program, an in-school intervention in an urban public high school using fitness to teach study skills and social responsibility, based on the perspective of its faculty (n = 9). The first research question asks what do Boston English Advisors…

The story about theater organizations, the public's approval, and the actors' identity formation in Nordic disability theater.

PubMed

Gjærum, Rikke Gürgens; Ineland, Jens; Sauer, Lennart

2010-01-01

Nordic disability theater is a relatively new and interesting field of disability research. In this article, the authors provide an overview of the field of disability theater in a Nordic context. The article is based on a comparative analysis from 3 research projects conducted in Sweden and Norway. The projects used qualitative methods and were analyzed from different theoretical perspectives. Interviews were conducted at 4 different disability theaters involving actors with hearing impairments, intellectual disabilities, physical disabilities, and mental disabilities. The aim of this article is to illustrate how the organizational settings reflect different goals and aims at the political and artistic levels. The authors will also address the relationship between the theaters and the public opinion and media. Finally, they will illustrate in what way organization, recognition, and public approval play an important role for the actors' identity formation and sense of belonging.

Using School-Level Interviews to Develop a Multisite PE Intervention Program

PubMed Central

Moe, Stacey G.; Pickrel, Julie; McKenzie, Thomas L.; Strikmiller, Patricia K.; Coombs, Derek; Murrie, Dale

2008-01-01

The Trial of Activity for Adolescent Girls (TAAG) is a randomized, multicenter field trial in middle schools that aims to reduce the decline of physical activity in adolescent girls. To inform the development of the TAAG intervention, two phases of formative research are conducted to gain information on school structure and environment and on the conduct of physical education classes. Principals and designated staff at 64 eligible middle schools were interviewed using the School Survey during Phase 1. The following year (Phase 2), physical education department heads of the 36 schools selected into TAAG were interviewed. Responses were examined to design a standardized, multicomponent physical activity intervention for six regions of the United States. This article describes the contribution of formative research to the development of the physical education intervention component and summarizes the alignment of current school policies and practices with national and state standards. PMID:16397159

Current Experimental Basis for Modeling Ice Accretions on Swept Wings

NASA Technical Reports Server (NTRS)

Vargas, Mario

2005-01-01

This work presents a review of the experimental basis for modeling ice accretions on swept wings. Experimental work related to ice accretion physics on swept wings conducted between 1954 and 2004 is reviewed. Proposed models or explanations of scallop formations are singled out and discussed. Special emphasis is placed on reviewing the work done to determine the basic macroscopic mechanisms of scallop formation. The role of feather growth and its connection to scallop growth is discussed. Conceptual steps in modeling scallop formations are presented. Research elements needed for modeling are discussed.

"Knowledge Workers" as the New Apprentices: The Influence of Organisational Autonomy, Goals and Values on the Nurturing of Expertise

ERIC Educational Resources Information Center

Fuller, Alison; Unwin, Lorna

2010-01-01

This paper explores the concept of apprenticeship in the context of the professional formation of knowledge workers. It draws on evidence from research conducted in two knowledge intensive organizations: a research-intensive, elite university; and a "cutting edge" software engineering company. In the former, we investigated the learning…

Attitudes of Rural Middle-School Youth toward Alcohol, Tobacco, Drugs, and Violence

ERIC Educational Resources Information Center

Kelly, Kathleen J.; Comello, Maria Leonora G.; Edwards, Ruth W.

2004-01-01

Since 1996, our research team has conducted 15 focus groups with 169 middle-school youth in small communities as formative research for campaigns against alcohol, tobacco, drugs, and violence. Some key findings of a synthesis of focus-group results are that girls and boys perceive different risks to alcohol and tobacco use; peer relationships are…

Guia para la Elaboracion y Evaluacion de Proyectos de Investigacion (Guidelines for Reporting and Evaluating Research Projects).

ERIC Educational Resources Information Center

Morles, Victor

This article establishes guidelines for conducting and evaluating research projects according to a scientific methodology. The organizational format suggested here follows an outline with elements and details that should be considered in an investigation. Each part of the proposed outline is explained, and terms are defined. Project evaluation is…

Cooperative or Collaborative Literacy Practices: Mapping Metadiscourse in a Business Students' Wiki Group Project

ERIC Educational Resources Information Center

Alyousef, Hesham Suleiman; Picard, Michelle Yvette

2011-01-01

Although wikis have been used successfully in collaborative learning in higher education, there is a lack of research investigating wikis in business module assessment tasks. Little research to date has been conducted on how wikis formatively develop international English as a second language (ESL) in business students' academic discourse. In this…

Support Services for Higher Degree Research Students: A Survey of Three Australian Universities

ERIC Educational Resources Information Center

Silva, Pujitha; Woodman, Karen; Taji, Acram; Travelyan, James; Samani, Shamim; Sharda, Hema; Narayanaswamy, Ramesh; Lucey, Anthony; Sahama, Tony; Yarlagadda, Prasad K. D. V.

2016-01-01

A survey was conducted across three Australian universities to identify the types and format of support services available for higher degree research (HDR, or MA and Ph.D.) students. The services were classified with regards to availability, location and accessibility. A comparative tool was developed to help institutions categorise their services…

Qualitative analysis of the contributions of nutritionists to the development of an online instrument for monitoring the food intake of schoolchildren

USDA-ARS?s Scientific Manuscript database

The Consumo Alimentar e Atividade Fisica de Escolares (CAAFE) questionnaire is an online research tool that has been developed to enable the self-report of physical activity and diet by Brazilian schoolchildren aged 7–10 years. Formative research was conducted with nutritionists during the developme...

Examining Marijuana User and Non-User Prototypes in Formative Research for Prevention Campaigns

ERIC Educational Resources Information Center

Comello, Maria Leonora G.; Slater, Michael D.

2010-01-01

We report on research--both quantitative and qualitative--conducted to explore perceptions of prototypes of marijuana users, as well as the extent to which self-prototype congruence predicted marijuana use intention. Results of a survey of undergraduates (N = 139) showed that prototypes of users and non-users differed in terms of key attributes,…

Development of a carbon formation reactor for carbon dioxide reduction

NASA Technical Reports Server (NTRS)

Noyes, G.

1985-01-01

Applied research, engineering development, and performance evaluation were conducted on a process for formation of dense carbon by pyrolysis of methane. Experimental research showed that dense (0.7 to 1.6 g/cc bulk density and 1.6 to 2.2 g/cc solid density) carbon can be produced by methane pyrolysis in quartzwool-packed quartz tubes at temperatrues of 1100 to 1300 C. This result supports the condensation theory of pyrolytic carbon formation from gaseous hydrocarbons. A full-scale Breadboard Carbon Formation Reactor (CFR) was designed, fabricated, and tested at 1100 to 1200 C with 380 to 2280 sccm input flows of methane. Single-pass conversion of methane to carbon ranged from 60 to 100 percent, with 89 percent average conversion. Performance was projected for an Advanced Carbon Reactor Subsystem (ACRS) which indicated that the ACRS is a viable option for management of metabolic carbon on long-duration space missions.

Research progress in formation mechanism of anodizing aluminum oxide

NASA Astrophysics Data System (ADS)

Lv, Yudong

2017-12-01

The self-ordering porous anodizing aluminum oxide (AAO) has attracted much attention because of its potential value of application. Valve metals (Al, Ti, Zr etc.) anodic studies have been conducted for more than 80 years, but the mechanism of the formation of hexagonal prismatic cell structure has so far been different. In this paper, the research results of AAO film formation mechanism are reviewed, and the growth models of several AAO films are summarized, including the field-assisted dissolution (FAD), the viscous flow model, the critical current density effect model, the bulk expansion stress model and the steady-state pore growth model and so on. It analyzed the principle of each model and its rationality. This paper will be of great help to reveal the nature of pore formation and self-ordering, and with the hope that through the study of AAO film formation mechanism, the specific effects of various oxidation parameters on AAO film morphology can be obtained.

Shatter cones formed in large-scale experimental explosion craters

NASA Technical Reports Server (NTRS)

Roddy, D. J.; Davis, L. K.

1977-01-01

In 1968, a series of 0.5-ton and 100-ton TNT explosion experiments were conducted in granitic rock near Cedar City, Utah, as part of a basic research program on cratering and shock wave propagation. Of special interest was the formation of an important type of shock metamorphic feature, shatter cones. A description is presented of the first reported occurrence of shatter cones in high explosion trials. A background to shatter cone studies is presented and attention is given to the test program, geology and physical properties of the test medium, the observed cratering, and the formational pressures for shatter cones. The high explosion trials conducted demonstrate beyond any doubt, that shatter cones can be formed by shock wave processes during cratering and that average formational pressures in these crystalline rocks are in the 20-60 kb range.

Using Solution Strategies to Examine and Promote High-School Students' Understanding of Exponential Functions: One Teacher's Attempt

ERIC Educational Resources Information Center

Brendefur, Jonathan

2014-01-01

Much research has been conducted on how elementary students develop mathematical understanding and subsequently how teachers might use this information. This article builds on this type of work by investigating how one high-school algebra teacher designs and conducts a lesson on exponential functions. Through a lesson study format she studies with…

Multi-Vehicle Cooperative Control Research at the NASA Armstrong Flight Research Center, 2000-2014

NASA Technical Reports Server (NTRS)

Hanson, Curt

2014-01-01

A brief introductory overview of multi-vehicle cooperative control research conducted at the NASA Armstrong Flight Research Center from 2000 - 2014. Both flight research projects and paper studies are included. Since 2000, AFRC has been almost continuously pursuing research in the areas of formation flight for drag reduction and automated cooperative trajectories. An overview of results is given, including flight experiments done on the FA-18 and with the C-17. Other multi-vehicle cooperative research is discussed, including small UAV swarming projects and automated aerial refueling.

Reliability and validity of an Internet traumatic stress survey with a college student sample.

PubMed

Fortson, Beverly L; Scotti, Joseph R; Del Ben, Kevin S; Chen, Yi-Chuen

2006-10-01

The reliability and validity of Internet-based questionnaires were assessed in a sample of undergraduates (N = 411) by comparing data collected via the Internet with data collected in a more traditional format. A 2 x 2 x 2 repeated measures factorial design was used, forming four groups: Paper-Paper, Paper-Internet, Internet-Paper, and Internet-Internet. Scores on measures of trauma exposure, depression, and posttraumatic stress symptoms formed the dependent variables. Statistical analyses demonstrated that the psychometric properties of Internet-based questionnaires are similar to those established via formats that are more traditional. Questionnaire format and presentation order did not affect rates of psychological symptoms endorsed by participants. Researchers can feel comfortable that Internet data collection is a viable--and reliable--means for conducting trauma research.

A model to predict thermal conductivity of irradiated U-Mo dispersion fuel

NASA Astrophysics Data System (ADS)

Burkes, Douglas E.; Huber, Tanja K.; Casella, Andrew M.

2016-05-01

Numerous global programs are focused on the continued development of existing and new research and test reactor fuels to achieve maximum attainable uranium loadings to support the conversion of a number of the world's remaining high-enriched uranium fueled reactors to low-enriched uranium fuel. Some of these programs are focused on assisting with the development and qualification of a fuel design that consists of a uranium-molybdenum (U-Mo) alloy dispersed in an aluminum matrix as one option for reactor conversion. Thermal conductivity is an important consideration in determining the operational temperature of the fuel and can be influenced by interaction layer formation between the dispersed phase and matrix and upon the concentration of the dispersed phase within the matrix. This paper extends the use of a simple model developed previously to study the influence of interaction layer formation as well as the size and volume fraction of fuel particles dispersed in the matrix, Si additions to the matrix, and Mo concentration in the fuel particles on the effective thermal conductivity of the U-Mo/Al composite during irradiation. The model has been compared to experimental measurements recently conducted on U-Mo/Al dispersion fuels at two different fission densities with acceptable agreement. Observations of the modeled results indicate that formation of an interaction layer and subsequent consumption of the matrix reveals a rather significant effect on effective thermal conductivity. The modeled interaction layer formation and subsequent consumption of the high thermal conductivity matrix was sensitive to the average dispersed fuel particle size, suggesting this parameter as one of the most effective in minimizing thermal conductivity degradation of the composite, while the influence of Si additions to the matrix in the model was highly dependent upon irradiation conditions.

A model to predict thermal conductivity of irradiated U–Mo dispersion fuel

DOE Office of Scientific and Technical Information (OSTI.GOV)

Burkes, Douglas E.; Huber, Tanja K.; Casella, Andrew M.

The Office of Materials Management and Minimization Reactor Conversion Program continues to develop existing and new research and test reactor fuels to achieve maximum attainable uranium loadings to support the conversion of a number of the world’s remaining high-enriched uranium fueled reactors to low-enriched uranium fuel. The program is focused on assisting with the development and qualification of a fuel design that consists of a uranium-molybdenum (U-Mo) alloy dispersed in an aluminum matrix as one option for reactor conversion. Thermal conductivity is an important consideration in determining the operational temperature of the fuel and can be influenced by interaction layermore » formation between the dispersed phase and matrix and upon the concentration of the dispersed phase within the matrix. This paper extends the use of a simple model developed previously to study the influence of interaction layer formation as well as the size and volume fraction of fuel particles dispersed in the matrix, Si additions to the matrix, and Mo concentration in the fuel particles on the effective thermal conductivity of the U-Mo/Al composite during irradiation. The model has been compared to experimental measurements recently conducted on U-Mo/Al dispersion fuels at two different fission densities with acceptable agreement. Observations of the modeled results indicate that formation of an interaction layer and subsequent consumption of the matrix reveals a rather significant effect on effective thermal conductivity. The modeled interaction layer formation and subsequent consumption of the high thermal conductivity matrix was sensitive to the average dispersed fuel particle size, suggesting this parameter as one of the most effective in minimizing thermal conductivity degradation of the composite, while the influence of Si additions to the matrix in the model was highly dependent upon irradiation conditions.« less

Use of claims data for research on treatment and outcomes of depression care.

PubMed

Melfi, C A; Croghan, T W

1999-04-01

Data sources such as medical insurance claims are increasingly used in outcomes research. In this report, we present opportunities and limitations associated with the use of such data for outcomes research in the area of depression. The purpose of this report is to illustrate the use of administrative claims data in conducting research in the area of depression. Information in this report is intended to be helpful to both experienced health services researchers and to those who may be new to the field of either outcomes research or mental health research. FORMAT: This report covers measurement of outcomes, possible data sources, episode construction, and statistical methodologies that are appropriate when conducting depression research using claims data. Through examples and references, issues to be considered in each of these areas are examined and recommendations are made. Strengths and limitations of claims data will also be pointed out. The use of claims data to conduct outcomes research in depression should be carried out responsibly. Limitations with using claims data to identify patients with depression must be acknowledged and appropriate methodologies should be used. Still, these data sources provide a rich opportunity to conduct outcomes research in depression, and much can be learned using administrative claims data.

Icing Simulation Research Supporting the Ice-Accretion Testing of Large-Scale Swept-Wing Models

NASA Technical Reports Server (NTRS)

Yadlin, Yoram; Monnig, Jaime T.; Malone, Adam M.; Paul, Bernard P.

2018-01-01

The work summarized in this report is a continuation of NASA's Large-Scale, Swept-Wing Test Articles Fabrication; Research and Test Support for NASA IRT contract (NNC10BA05 -NNC14TA36T) performed by Boeing under the NASA Research and Technology for Aerospace Propulsion Systems (RTAPS) contract. In the study conducted under RTAPS, a series of icing tests in the Icing Research Tunnel (IRT) have been conducted to characterize ice formations on large-scale swept wings representative of modern commercial transport airplanes. The outcome of that campaign was a large database of ice-accretion geometries that can be used for subsequent aerodynamic evaluation in other experimental facilities and for validation of ice-accretion prediction codes.

Use of formative research and social network theory to develop a group walking intervention: Sumter County on the Move!

PubMed

Forthofer, Melinda; Burroughs-Girardi, Ericka; Stoisor-Olsson, Liliana; Wilcox, Sara; Sharpe, Patricia A; Pekuri, Linda M

2016-10-01

Although social support is a frequently cited enabler of physical activity, few studies have examined how to harness social support in interventions. This paper describes community-based formative research to design a walking program for mobilizing naturally occurring social networks to support increases in walking behavior. Focus group methods were used to engage community members in discussions about desired walking program features. The research was conducted with underserved communities in Sumter County, South Carolina. The majority of focus group participants were women (76%) and African American (92%). Several important themes emerged from the focus group results regarding attitudes toward walking, facilitators of and barriers to walking, ideal walking program characteristics, and strategies for encouraging community members to walk. Most noteably, the role of existing social networks as a supportive influence on physical activity was a recurring theme in our formative research and a gap in the existing evidence base. The resulting walking program focused on strategies for mobilizing, supporting and reinforcing existing social networks as mechanisms for increasing walking. Our approach to linking theory, empirical evidence and community-based formative research for the development of a walking intervention offers an example for practitioners developing intervention strategies for a wide range of behaviors. Copyright © 2016 Elsevier Ltd. All rights reserved.

Dynamics of Research Team Formation in Complex Networks

NASA Astrophysics Data System (ADS)

Sun, Caihong; Wan, Yuzi; Chen, Yu

Most organizations encourage the formation of teams to accomplish complicated tasks, and vice verse, effective teams could bring lots benefits and profits for organizations. Network structure plays an important role in forming teams. In this paper, we specifically study the dynamics of team formation in large research communities in which knowledge of individuals plays an important role on team performance and individual utility. An agent-based model is proposed, in which heterogeneous agents from research communities are described and empirically tested. Each agent has a knowledge endowment and a preference for both income and leisure. Agents provide a variable input (‘effort’) and their knowledge endowments to production. They could learn from others in their team and those who are not in their team but have private connections in community to adjust their own knowledge endowment. They are allowed to join other teams or work alone when it is welfare maximizing to do so. Various simulation experiments are conducted to examine the impacts of network topology, knowledge diffusion among community network, and team output sharing mechanisms on the dynamics of team formation.

Multimedia and Textual Reading Comprehension: Multimedia as Personal Learning Environment's Enriching Format

ERIC Educational Resources Information Center

García, J. Daniel; Rigo, Eduardo; Jiménez, Rafael

2017-01-01

In this article we will discuss part of a piece of research that was conducted with two 4ESO groups. Textual learning is opposed to multimedia learning within the context of PLE's (Personal Learning Environment) reading tools and strategies. In the research an analysis was made of whether it would be possible to improve the reading process through…

Qualitative analysis of the contributions of nutritionists to the development of an online instrument for monitoring the food intake of schoolchildren

USDA-ARS?s Scientific Manuscript database

The Consumo Alimentar e Atividade Fisica de Escolares (CAAFE) questionnaire is an online research tool that has been developed to enable the self-report of physical activity and diet by Brazilian school children aged 7–10 years. Formative research was conducted with nutritionists during the developm...

Workplace-based assessment and students' approaches to learning: a qualitative inquiry.

PubMed

Al-Kadri, Hanan M; Al-Kadi, Mohammed T; Van Der Vleuten, Cees P M

2013-01-01

We have performed this research to assess the effect of work-place based assessment (WBA) practice on medical students' learning approaches. The research was conducted at the King Saud bin Abdulaziz University for Health Sciences, College of Medicine from 1 March to 31 July 2012. We conducted a qualitative, phenomenological research utilizing semi-structured individual interviews with medical students exposed to WBA. The audio-taped interviews were transcribed verbatim, analyzed, and themes were identified. We preformed investigators' triangulation, member checking with clinical supervisors and we triangulated the data with a similar research performed prior to the implementation of WBA. WBA results in variable learning approaches. Based on several affecting factors; clinical supervisors, faculty-given feedback, and assessment function, students may swing between surface, deep and effort and achievement learning approaches. Students' and supervisors' orientations on the process of WBA, utilization of peer feedback and formative rather than summative assessment facilitate successful implementation of WBA and lead to students' deeper approaches to learning. Interestingly, students and their supervisors have contradicting perceptions to WBA. A change in culture to unify students' and supervisors' perceptions of WBA, more accommodation of formative assessment, and feedback may result in students' deeper approach to learning.

Multifamily Group Psychoeducation in New York State: Implementation and Fidelity Outcomes.

PubMed

Kealey, Edith M; Leckman-Westin, Emily; Jewell, Thomas C; Finnerty, Molly T

2015-11-01

The study examined implementation outcomes from a large state initiative to support dissemination of multifamily group (MFG) psychoeducation in outpatient mental health settings. Thirty-one sites participated in the project. Baseline training in the MFG model was followed by monthly expert consultation delivered in either a group (16 sites) or individual format (15 sites). Research staff assessed fidelity to the MFG model by telephone at baseline and 12, 18, and 24 months and documented time to completion of three key milestones: holding a family joining session, a family educational workshop, and an MFG meeting. Intent-to-train analyses found that 12 sites (39%) achieved high fidelity to the MFG model, and 20 (65%) achieved moderate or high fidelity. Mean scores on the Family Psychoeducation Fidelity Assessment Scale increased over time. Twenty-five sites (81%) conducted at least one joining session, and 20 (65%) conducted at least one MFG. Mean±SD time from baseline to the first group was 11.75±4.78 months. Programs that held the first joining session within four to 12 months after training were significantly more likely than programs that did not to conduct a group (p<.05). No significant differences were found by consultation format. Implementation of moderate- to high-fidelity MFG programs in routine outpatient mental health settings is feasible. Sites that moved very quickly or very slowly in early implementation stages were less likely to be successful in conducting an MFG. More research on the efficiency and effectiveness of consultation formats is needed to guide future implementation efforts.

"It Makes You Rethink Your Choice of the Pill": Theory-Based Formative Research to Design a Contraceptive Choice Campaign.

PubMed

Sundstrom, Beth; DeMaria, Andrea L; Meier, Stephanie; Jones, Annabel; Moxley, Grace E

2015-01-01

Half of all pregnancies in the United States remain unplanned despite improved access to highly effective long-acting reversible contraception, including the intrauterine device and the implant. This study conducted theory-based formative research to develop a contraceptive choice campaign aimed at increasing long-acting reversible contraception uptake by women ages 18-44 years in Charleston, South Carolina, an urban area in the southeastern United States. Researchers developed and tested message concepts and designs. Six focus groups and 18 interviews were conducted among reproductive-age women (n = 79). Qualitative data analysis revealed messages and designs that resonated with these women. Emphasizing long-acting reversible contraception as the healthy option, highlighting long-acting reversible contraception effectiveness, including relatable and trustworthy characters, and using language of control emerged as themes. Women reported a preference for statistics illustrating effectiveness combined with empowering messages of control over contraceptive decision making. Findings from this study offer practical recommendations for developing contraceptive choice campaigns targeting long-acting reversible contraception use and further the goal of reducing unintended pregnancy among women.

Review of nutrition labeling formats.

PubMed

Geiger, C J; Wyse, B W; Parent, C R; Hansen, R G

1991-07-01

This article examines nutrition labeling history as well as the findings of nine research studies of nutrition labeling formats. Nutrition labeling regulations were announced in 1973 and have been periodically amended since then. In response to requests from consumers and health care professionals for revision of the labeling system, the Food and Drug Administration initiated a three-phase plan for reform of nutrition labeling in 1990. President Bush signed the Nutrition Labeling and Education Act in November 1990. Literature analysis revealed that only nine studies with an experimental design have focused on nutrition labeling since 1971. Four were conducted before 1975, which was the year that nutrition labeling was officially implemented, two were conducted in 1980, and three were conducted after 1986. Only two of the nine studies supported the traditional label format mandated by the Code of Federal Regulations, and one study partially supported it. Four of the nine studies that evaluated graphic presentations of nutrition information found that consumer comprehension of nutrition information was improved with a graphic format for nutrition labeling: three studies supported the use of bar graphs and one study supported the use of a pie chart. Full disclosure (ie, complete nutrient and ingredient labeling) was preferred by consumers in two of the three studies that examined this variable. The third study supported three types of information disclosure dependent upon socioeconomic class. In those studies that tested graphics, a bar graph format was significantly preferred and showed better consumer comprehension than the traditional format.

Clinical Trial Assessment of Infrastructure Matrix Tool to Improve the Quality of Research Conduct in the Community.

PubMed

Dimond, Eileen P; Zon, Robin T; Weiner, Bryan J; St Germain, Diane; Denicoff, Andrea M; Dempsey, Kandie; Carrigan, Angela C; Teal, Randall W; Good, Marjorie J; McCaskill-Stevens, Worta; Grubbs, Stephen S; Dimond, Eileen P; Zon, Robin T; Weiner, Bryan J; St Germain, Diane; Denicoff, Andrea M; Dempsey, Kandie; Carrigan, Angela C; Teal, Randall W; Good, Marjorie J; McCaskill-Stevens, Worta; Grubbs, Stephen S

2016-01-01

Several publications have described minimum standards and exemplary attributes for clinical trial sites to improve research quality. The National Cancer Institute (NCI) Community Cancer Centers Program (NCCCP) developed the clinical trial Best Practice Matrix tool to facilitate research program improvements through annual self-assessments and benchmarking. The tool identified nine attributes, each with three progressive levels, to score clinical trial infrastructural elements from less to more exemplary. The NCCCP sites correlated tool use with research program improvements, and the NCI pursued a formative evaluation to refine the interpretability and measurability of the tool. From 2011 to 2013, 21 NCCCP sites self-assessed their programs with the tool annually. During 2013 to 2014, NCI collaborators conducted a five-step formative evaluation of the matrix tool. Sites reported significant increases in level-three scores across the original nine attributes combined (P<.001). Two specific attributes exhibited significant change: clinical trial portfolio diversity and management (P=.0228) and clinical trial communication (P=.0281). The formative evaluation led to revisions, including renaming the Best Practice Matrix as the Clinical Trial Assessment of Infrastructure Matrix (CT AIM), expanding infrastructural attributes from nine to 11, clarifying metrics, and developing a new scoring tool. Broad community input, cognitive interviews, and pilot testing improved the usability and functionality of the tool. Research programs are encouraged to use the CT AIM to assess and improve site infrastructure. Experience within the NCCCP suggests that the CT AIM is useful for improving quality, benchmarking research performance, reporting progress, and communicating program needs with institutional leaders. The tool model may also be useful in disciplines beyond oncology.

"We make the path by walking it": building an academic community partnership with Boston Chinatown.

PubMed

Rubin, Carolyn Leung; Allukian, Nathan; Wang, Xingyue; Ghosh, Sujata; Huang, Chien-Chi; Wang, Jacy; Brugge, Doug; Wong, John B; Mark, Shirley; Dong, Sherry; Koch-Weser, Susan; Parsons, Susan K; Leslie, Laurel K; Freund, Karen M

2014-01-01

The potential for academic community partnerships are challenged in places where there is a history of conflict and mistrust. Addressing Disparities in Asian Populations through Translational Research (ADAPT) represents an academic community partnership between researchers and clinicians from Tufts Medical Center and Tufts University and community partners from Boston Chinatown. Based in principles of community-based participatory research and partnership research, this partnership is seeking to build a trusting relationship between Tufts and Boston Chinatown. This case study aims to provides a narrative story of the development and formation of ADAPT as well as discuss challenges to its future viability. Using case study research tools, this study draws upon a variety of data sources including interviews, program evaluation data and documents. Several contextual factors laid the foundation for ADAPT. Weaving these factors together helped to create synergy and led to ADAPT's formation. In its first year, ADAPT has conducted formative research, piloted an educational program for community partners and held stakeholder forums to build a broad base of support. ADAPT recognizes that long term sustainability requires bringing multiple stakeholders to the table even before a funding opportunity is released and attempting to build a diversified funding base.

Response simulation and theoretical calibration of a dual-induction resistivity LWD tool

NASA Astrophysics Data System (ADS)

Xu, Wei; Ke, Shi-Zhen; Li, An-Zong; Chen, Peng; Zhu, Jun; Zhang, Wei

2014-03-01

In this paper, responses of a new dual-induction resistivity logging-while-drilling (LWD) tool in 3D inhomogeneous formation models are simulated by the vector finite element method (VFEM), the influences of the borehole, invaded zone, surrounding strata, and tool eccentricity are analyzed, and calibration loop parameters and calibration coefficients of the LWD tool are discussed. The results show that the tool has a greater depth of investigation than that of the existing electromagnetic propagation LWD tools and is more sensitive to azimuthal conductivity. Both deep and medium induction responses have linear relationships with the formation conductivity, considering optimal calibration loop parameters and calibration coefficients. Due to the different depths of investigation and resolution, deep induction and medium induction are affected differently by the formation model parameters, thereby having different correction factors. The simulation results can provide theoretical references for the research and interpretation of the dual-induction resistivity LWD tools.

New particle formation in China: Current knowledge and further directions.

PubMed

Wang, Zhibin; Wu, Zhijun; Yue, Dingli; Shang, Dongjie; Guo, Song; Sun, Junying; Ding, Aijun; Wang, Lin; Jiang, Jingkun; Guo, Hai; Gao, Jian; Cheung, Hing Cho; Morawska, Lidia; Keywood, Melita; Hu, Min

2017-01-15

New particle formation (NPF) studies have been conducted in China since 2004. Formation of new atmospheric aerosol particles has been observed to take place in diverse environments, even under the circumstances of high pre-existing particle loading, challenging the traditional and present understanding of the physicochemical nucleation mechanisms, which have been proposed based on the investigations in clean environments and under laboratory experimental conditions. This paper summarizes the present status and gaps in understanding NPF in China and discusses the main directions opening for future research. Copyright © 2016 Elsevier B.V. All rights reserved.

Acrylamide: update on selected research activities conducted by the European food and drink industry.

PubMed

Taeymans, Dominique; Andersson, Anders; Ashby, Peter; Blank, Imre; Gondé, Pierre; van Eijck, Paul; Faivre, Virginie; Lalljie, Sam P D; Lingnert, Hans; Lindblom, Marianne; Matissek, Reinhard; Müller, Detflef; Stadler, Richard H; Studer, Alfred; Silvani, David; Tallmadge, Dan; Thompson, Geoff; Whitmore, Tricia; Wood, John; Zyzak, David

2005-01-01

This paper reviews the progress made by the European food and drink industry (CIAA) on acrylamide with regard to analytical methods, mechanisms of formation, and mitigation research in the major food categories. It is an update on the first CIAA review paper, "A Review of Acrylamide: An Industry Perspective on Research, Analysis, Formation and Control." Initial difficulties with the establishment of reliable analytical methods, in most cases, have now been overcome, but challenges remain in terms of the need to develop simple and rapid test methods and certified reference materials. Many trials have been conducted under laboratory and experimental conditions in a variety of foods, and a number of possible measures have been identified to relatively lower the amounts of acrylamide in food. Promising applications were studied in reconstituted potato models by addition of amino acids or use of asparaginase. In bakery wares, predictive models have been established to determine the role of ammonium carbonate and invert sugar in acrylamide formation. Studies in several commercial foods showed that acrylamide is not stable over time in roasted and ground coffee. Some progress in relatively lowering acrylamide in certain food categories has been achieved, but at this stage can only be considered marginal. Any options that are chosen to reduce acrylamide in commercial products must be technologically feasible and must not adversely affect the quality and safety of the final product.

NASA/FAA/NCAR Supercooled Large Droplet Icing Flight Research: Summary of Winter 1996-1997 Flight Operations

NASA Technical Reports Server (NTRS)

Miller, Dean; Ratvasky, Thomas; Bernstein, Ben; McDonough, Frank; Strapp, J. Walter

1998-01-01

During the winter of 1996-1997, a flight research program was conducted at the NASA-Lewis Research Center to study the characteristics of Supercooled Large Droplets (SLD) within the Great Lakes region. This flight program was a joint effort between the National Aeronautics and Space Administration (NASA), the National Center for Atmospheric Research (NCAR), and the Federal Aviation Administration (FAA). Based on weather forecasts and real-time in-flight guidance provided by NCAR, the NASA-Lewis Icing Research Aircraft was flown to locations where conditions were believed to be conducive to the formation of Supercooled Large Droplets aloft. Onboard instrumentation was then used to record meteorological, ice accretion, and aero-performance characteristics encountered during the flight. A total of 29 icing research flights were conducted, during which "conventional" small droplet icing, SLD, and mixed phase conditions were encountered aloft. This paper will describe how flight operations were conducted, provide an operational summary of the flights, present selected experimental results from one typical research flight, and conclude with practical "lessons learned" from this first year of operation.

An Overview of Genomic Sequence Variation Markup Language (GSVML)

PubMed Central

Nakaya, Jun; Hiroi, Kaei; Ido, Keisuke; Yang, Woosung; Kimura, Michio

2006-01-01

Internationally accumulated genomic sequence variation data on human requires the interoperable data exchanging format. We developed the GSVML as the data exchanging format. The GSVML is human health oriented and has three categories. Analyses on the use case in human health domain and the investigation on the databases and markup languages were conducted. An interface ability to Health Level Seven Genotype Model was examined. GSVML provides a sharable platform for both clinical and research applications.

Summary of the effects of engine throttle response on airplane formation-flying qualities

NASA Technical Reports Server (NTRS)

Walsh, Kevin R.

1992-01-01

A flight evaluation as conducted to determine the effect of engine throttle response characteristics on precision formation-flying qualities. A variable electronic throttle control system was developed and flight-tested on a TF-104G airplane with a J79-11B engine at the NASA Dryden Flight Research Facility. Ten research flights were flown to evaluate the effects of throttle gain, time delay, and fuel control rate limiting on engine handling qualities during a demanding precision wing formation task. Handling quality effects of lag filters and lead compensation time delays were also evaluated. Data from pilot ratings and comments indicate that throttle control system time delays and rate limits cause significant degradations in handling qualities. Threshold values for satisfactory (level 1) and adequate (level 2) handling qualities of these key variables are presented.

Digital seismic-reflection data from western Rhode Island Sound, 1980

USGS Publications Warehouse

McMullen, K.Y.; Poppe, L.J.; Soderberg, N.K.

2009-01-01

During 1980, the U.S. Geological Survey (USGS) conducted a seismic-reflection survey in western Rhode Island Sound aboard the Research Vessel Neecho. Data from this survey were recorded in analog form and archived at the USGS Woods Hole Science Center's Data Library. Due to recent interest in the geology of Rhode Island Sound and in an effort to make the data more readily accessible while preserving the original paper records, the seismic data from this cruise were scanned and converted to Tagged Image File Format (TIFF) images and SEG-Y data files. Navigation data were converted from U.S. Coast Guard Long Range Aids to Navigation (LORAN-C) time delays to latitudes and longitudes, which are available in Environmental Systems Research Institute, Inc. (ESRI) shapefile format and as eastings and northings in space-delimited text format.

Why use case studies rather than simulation-gaming techniques or library research?

NASA Technical Reports Server (NTRS)

Mcdonald, S. W.

1981-01-01

Method which present a student with a more challenging and true to life situation of needing to conduct research in a problem solving context--and not thinking about organization of format until research and thinking are complete are investigated. Simulation-gaming techniques which attempt to teach initiative and creativity that library research are used for this purpose. However, it is shown case studies provide the greatest opportunities to engage the students in problem solving situations in which they develop skills as researchers and writers.

Using formative research to promote antenatal care attendance and iron folic acid supplementation in Zinder, Niger.

PubMed

Hess, Sonja Y; Ouédraogo, Césaire T; Bamba, Ibrahim F; Wessells, K Ryan; Keith, Nancy; Faye, Thierno; Ndiaye, Banda; Doudou, Maimouna; Nielsen, Jennifer

2018-04-01

In Niger, use of antenatal care (ANC) and iron folic acid (IFA) supplements is suboptimal. The objectives of this paper are as follows: (a) to conduct formative research to understand barriers and beliefs among pregnant women related to ANC, IFA supplementation, and pregnancy outcomes; (b) assess the quality of currently provided ANC services; (c) use the findings to guide the development of programmatic interventions to improve coverage of ANC services and IFA supplementation of pregnant women. Structured in-home interviews (n = 72) and focus groups (n = 4) were conducted with pregnant women in 4 randomly selected villages in rural Zinder. ANC consultations (n = 33) were observed in 5 randomly selected health centres, and exit interviews were conducted with all pregnant women and seven health agents following these observations. During workshops with stakeholders, results of the formative research were interpreted, and programmatic interventions were developed. In home interviews, 72% of women reported having attended at least one ANC visit. They also reported husbands (71%), mothers (40%), and friends (33%) supporting ANC attendance. Among those having attended ANC, only 65% reported taking IFA the day prior to the interview. Three of five health centres visited had IFA in stock. Health staff did not provide IFA supplements during 18 of 33 observed ANC consultations of which only 7 cases could be explained by the lack of IFA supplements in stock. Findings were used to design a 3-pronged intervention: (a) behaviour change communication activities in communities; (b) quality improvement activities in health centres to strengthen ANC; and (c) provision of key supplies required for ANC. © 2017 John Wiley & Sons Ltd.

Formative research and development of an evidence-based communication strategy: the introduction of Vi typhoid fever vaccine among school-aged children in Karachi, Pakistan.

PubMed

Pach, Alfred; Tabbusam, Ghurnata; Khan, M Imran; Suhag, Zamir; Hussain, Imtiaz; Hussain, Ejaz; Mumtaz, Uzma; Haq, Inam Ul; Tahir, Rehman; Mirani, Amjad; Yousafzai, Aisha; Sahastrabuddhe, Sushant; Ochiai, R Leon; Soofi, Sajid; Clemens, John D; Favorov, Michael O; Bhutta, Zulfiqar A

2013-01-01

The authors conducted formative research (a) to identify stakeholders' concerns related to typhoid fever and the need for disease information and (b) to develop a communication strategy to inform stakeholders and address their concerns and motivate for support of a school-based vaccination program in Pakistan. Data were collected during interactive and semi-structured focus group discussions and interviews, followed by a qualitative analysis and multidisciplinary consultative process to identify an effective social mobilization strategy comprised of relevant media channels and messages. The authors conducted 14 focus group discussions with the parents of school-aged children and their teachers, and 13 individual interviews with school, religious, and political leaders. Parents thought that typhoid fever was a dangerous disease, but were unsure of their children's risk. They were interested in vaccination and were comfortable with a school-based vaccination if conducted under the supervision of trained and qualified staff. Teachers and leaders needed information on typhoid fever, the vaccine, procedures, and sponsors of the vaccination program. Meetings were considered the best form of information dissemination, followed by printed materials and mass media. This study shows how qualitative research findings can be translated into an effective social mobilization and communication approach. The findings of the research indicated the importance of increasing awareness of typhoid fever and the benefits of vaccination against the disease. Identification and dissemination of relevant, community-based disease and vaccination information will increase demand and use of vaccination.

Identification and Control of Gravity Related Defect Formation During Melt Growth of Electro-Optic Single Crystals Bismuth Silicate(Bi12SiO20)

NASA Technical Reports Server (NTRS)

Becia, Piotr; Wiegel, Michaela E. K.

2004-01-01

A research carried out under Award Number NAG8-1487 was aimed at to the design, conduct and analysis of experiments directed at the identification and control of gravitational effects on crystal growth, segregation and defect formation in the Sillenite system: bismuth silicate (Bi(12)SiO(20)). Correlation analyses was conducted in order to establish the influence of gravity related defects introduced during crystal growth on critical, application specific properties. Achievement of the states objective was conducted during the period from Feb. 01, 1998 to Dec. 31, 2003 with the following anticipated milestones: 1. Establishment of capabilities for (a) reproducible Czochralski and Bridgman-type growth of BSO single crystals and (b) for comprehensive analysis of crystalline and chemical defects as well as for selective property characterization of grown crystals (year 1). 2. Design and execution of critical space growth experiment(s) based on analyses of prefatory space results (experiments aimed at establishing the viability of planned approaches and procedures) and on unresolved issues related to growth, segregation and defect formation associated with conventional growth in Bridgman geometries. Comparative analysis of growth under conventional and under mu-g conditions; identification of gravity related defect formation during conventional Bridgman growth and formulation of approaches for their control (years 2 and 3). Development of charge confinement system which permits growth interface demarcation (in a mu-g environment) as well as minimization of confinement related stress and contamination during growth; design of complementary mu-g growth experiments aimed at quantitative mu-g growth and segregation analyses (year 4). 3. Conduct of quantitative mu-g growth experiments directed at: (a) identification and control of gravity related crystalline and chemical defect formation during single crystal growth of Bi(12)SiO(20) and at (b) defect engineering -the development of approaches to the controlled generation during crystal growth of specified point defects in homogeneous distribution (year 5). The proposed research places focus on a class of materials which have outstanding electrical and optical properties but have so far failed to reach their potential, primarily because of our inability to control adequately their stoichiometry and crystal defect formation as well as confinement related contamination and lattice stress.

Swept-Wing Ice Accretion Characterization and Aerodynamics

NASA Technical Reports Server (NTRS)

Broeren, Andy P.; Potapczuk, Mark G.; Riley, James T.; Villedieu, Philippe; Moens, Frederic; Bragg, Michael B.

2013-01-01

NASA, FAA, ONERA, the University of Illinois and Boeing have embarked on a significant, collaborative research effort to address the technical challenges associated with icing on large-scale, three-dimensional swept wings. The overall goal is to improve the fidelity of experimental and computational simulation methods for swept-wing ice accretion formation and resulting aerodynamic effect. A seven-phase research effort has been designed that incorporates ice-accretion and aerodynamic experiments and computational simulations. As the baseline, full-scale, swept-wing-reference geometry, this research will utilize the 65% scale Common Research Model configuration. Ice-accretion testing will be conducted in the NASA Icing Research Tunnel for three hybrid swept-wing models representing the 20%, 64% and 83% semispan stations of the baseline-reference wing. Three-dimensional measurement techniques are being developed and validated to document the experimental ice-accretion geometries. Artificial ice shapes of varying geometric fidelity will be developed for aerodynamic testing over a large Reynolds number range in the ONERA F1 pressurized wind tunnel and in a smaller-scale atmospheric wind tunnel. Concurrent research will be conducted to explore and further develop the use of computational simulation tools for ice accretion and aerodynamics on swept wings. The combined results of this research effort will result in an improved understanding of the ice formation and aerodynamic effects on swept wings. The purpose of this paper is to describe this research effort in more detail and report on the current results and status to date. 1

Swept-Wing Ice Accretion Characterization and Aerodynamics

NASA Technical Reports Server (NTRS)

Broeren, Andy P.; Potapczuk, Mark G.; Riley, James T.; Villedieu, Philippe; Moens, Frederic; Bragg, Michael B.

2013-01-01

NASA, FAA, ONERA, the University of Illinois and Boeing have embarked on a significant, collaborative research effort to address the technical challenges associated with icing on large-scale, three-dimensional swept wings. The overall goal is to improve the fidelity of experimental and computational simulation methods for swept-wing ice accretion formation and resulting aerodynamic effect. A seven-phase research effort has been designed that incorporates ice-accretion and aerodynamic experiments and computational simulations. As the baseline, full-scale, swept-wing-reference geometry, this research will utilize the 65 percent scale Common Research Model configuration. Ice-accretion testing will be conducted in the NASA Icing Research Tunnel for three hybrid swept-wing models representing the 20, 64 and 83 percent semispan stations of the baseline-reference wing. Threedimensional measurement techniques are being developed and validated to document the experimental ice-accretion geometries. Artificial ice shapes of varying geometric fidelity will be developed for aerodynamic testing over a large Reynolds number range in the ONERA F1 pressurized wind tunnel and in a smaller-scale atmospheric wind tunnel. Concurrent research will be conducted to explore and further develop the use of computational simulation tools for ice accretion and aerodynamics on swept wings. The combined results of this research effort will result in an improved understanding of the ice formation and aerodynamic effects on swept wings. The purpose of this paper is to describe this research effort in more detail and report on the current results and status to date.

Multimedia technology for diabetes education of school nurses

USDA-ARS?s Scientific Manuscript database

Children with type 1 diabetes (T1D) require school nurses (SN) with specific diabetes training. Multimedia learning can facilitate cost-effective, convenient education of SN by diabetes educators (DE). We conducted formative research to gather qualitative and quantitative data to inform the interven...

Re-Presenting Women and Leadership: A Methodological Journey

ERIC Educational Resources Information Center

Wilkinson, Jane; Blackmore, Jill

2008-01-01

Research on women's leadership has tended to focus upon detailed micro studies of individual women's identity formation or, alternatively, to conduct macro studies of its broader discursive constructions within society. Both approaches, although providing helpful understandings of the issues surrounding constructions of women's leadership, are…

Challenges in conducting qualitative research in health: A conceptual paper.

PubMed

Khankeh, Hamidreza; Ranjbar, Maryam; Khorasani-Zavareh, Davoud; Zargham-Boroujeni, Ali; Johansson, Eva

2015-01-01

Qualitative research focuses on social world and provides the tools to study health phenomena from the perspective of those experiencing them. Identifying the problem, forming the question, and selecting an appropriate methodology and design are some of the initial challenges that researchers encounter in the early stages of any research project. These problems are particularly common for novices. This article describes the practical challenges of using qualitative inquiry in the field of health and the challenges of performing an interpretive research based on professional experience as a qualitative researcher and on available literature. One of the main topics discussed is the nature of qualitative research, its inherent challenges, and how to overcome them. Some of those highlighted here include: identification of the research problem, formation of the research question/aim, and selecting an appropriate methodology and research design, which are the main concerns of qualitative researchers and need to be handled properly. Insights from real-life experiences in conducting qualitative research in health reveal these issues. The paper provides personal comments on the experiences of a researcher in conducting pure qualitative research in the field of health. It offers insights into the practical difficulties encountered when performing qualitative studies and offers solutions and alternatives applied by these authors, which may be of use to others.

Nursing research in the United States: the protection of human subjects.

PubMed

Oddi, L F; Cassidy, V R

1990-01-01

In the United States the protection of the rights of human subjects in experimentation has evolved at three levels: professional, public, and private. At the professional level, codes, guidelines and the Patient's Bill of Rights address the issues of protecting the dignity, privacy and autonomy of individuals who serve as research subjects. At the public level, regulations promulgated by the Food and Drug Administration and the Department of Health and Human Services have become the standard for protecting human subjects. At the private level, United States common law regulates the conduct of individual researchers by requiring them to act in a manner consistent with generally accepted standards of care. As professionals, nurses must be actively involved in the formation of public policy regarding the conduct of research and strive to formulate a research agenda that will ensure that the ethics of research in nursing is above question.

Integrative Medicine Experience in the U.S. Department of Defense

PubMed Central

Delgado, Roxana E.

2015-01-01

Abstract Background: Over the past 15 years, the use of complementary and alternative medicine (CAM) services, currently described as integrative medicine (IM) when used together with conventional medicine , has continued to rise in the United States. The trends seen in the civilian population are mirrored within the U.S. Military. Objective: A survey was conducted to show the change in the prevalence of integrative medicine services, budgeting of those services, and ongoing research in IM within Department of Defense (DoD) medical treatment facilities (MTFs) from 2005 through 2009. Materials and Methods: Design: The Deputy Chief of Clinical Services or Service equivalent was contacted at fourteen selected DoD MTFs. Comprehensive structured telephone interviews were conducted using a formatted 20-item questionnaire. The questionnaire design was of a mixed model with open and closed formats as well as dichotomous yes/no questions. The questions covered the subject areas of available services, budgeting, and research. The initial survey was conducted in 2005 with a follow-up survey conducted in 2009. Setting: This survey involved DoD MTFs. Main Outcome Measures: The surveys were conducted to determine the prevalence of IM services within selected DoD facilities. Results: There was a steady increase in the number of IM services available in the DoD MTFs from 2005 through 2009. Acupuncture, biofeedback, nutritional counseling, and spiritual healing were the most prevalent IM services in 2009. Funding sources changed from central funding (Offices of the Surgeon General) to Congressional and local funding. Conclusions: It is essential that the DoD medical community provides safe and effective treatments by providing oversight of IM services, collaboration for research, credentialing of practitioners, and establishing educational programs. PMID:26543518

Lidar Observations of the Optical Properties and 3-Dimensional Structure of Cirrus Clouds

NASA Technical Reports Server (NTRS)

Eloranta, E. W.

1996-01-01

The scientific research conducted under this grant have been reported in a series of journal articles, dissertations, and conference proceedings. This report consists of a compilation of these publications in the following areas: development and operation of a High Spectral Resolution Lidar, cloud physics and cloud formation, mesoscale observations of cloud phenomena, ground-based and satellite cloud cover observations, impact of volcanic aerosols on cloud formation, visible and infrared radiative relationships as measured by satellites and lidar, and scattering cross sections.

Development and evaluation of an airplane electronic display format aligned with the inertial velocity vector

NASA Technical Reports Server (NTRS)

Steinmetz, G. G.

1986-01-01

The development of an electronic primary flight display format aligned with the aircraft velocity vector, a simulation evaluation comparing this format with an electronic attitude-aligned primary flight display format, and a flight evaluation of the velocity-vector-aligned display format are described. Earlier tests in turbulent conditions with the electronic attitude-aligned display format had exhibited unsteadiness. A primary objective of aligning the display format with the velocity vector was to take advantage of a velocity-vector control-wheel steering system to provide steadiness of display during turbulent conditions. Better situational awareness under crosswind conditions was also achieved. The evaluation task was a curved, descending approach with turbulent and crosswind conditions. Primary flight display formats contained computer-drawn perspective runway images and flight-path angle information. The flight tests were conducted aboard the NASA Transport Systems Research Vehicle (TSRV). Comparative results of the simulation and flight tests were principally obtained from subjective commentary. Overall, the pilots preferred the display format aligned with the velocity vector.

Formative research for a healthy diet intervention among inner-city adolescents: the importance of family, school and neighborhood environment.

PubMed

Dodson, Jennifer L; Hsiao, Ya-Chun; Kasat-Shors, Madhuri; Murray, Laura; Nguyen, Nga Kim; Richards, Adam K; Gittelsohn, Joel

2009-01-01

To understand influences on diet among low-income African-American adolescents in East Baltimore. Formative research was conducted for a food store-centered healthy diet intervention targeted to inner-city youth. Family, school and neighborhood influences on eating habits and health concepts were explored. Family structure, economic resources and past experiences influence what food means to adolescents. Healthy food in school and local stores is limited. Terminology to categorize foods was identified, including the term "home foods". Suggested adolescent nutritional interventions include promotion of home-based eating, improving availability of healthy foods in school and neighborhood stores, and targeted educational materials.

Comparison of Brief Summary Formats Through a Health Literacy Lens.

PubMed

Sharp, Michele L; Hall, Lori; Eleftherion, Anthony; Simpson, Katherine; Neuhauser, Linda

2018-01-01

Print pharmaceutical advertisements in the United States require inclusion of a brief summary of side effects, warnings, precautions, and contraindications from the labeling. The full package insert, which sponsors have traditionally used to fulfill the brief summary requirement, does not adhere to health literacy best practices, limiting its value to consumers. This study compared the understandability and usability of brief summaries in 3 formats designed to be more consumer friendly. Three brief summary formats were tested: (1) 2-column "Question and Answer"; (2) "Prescription Drug Facts Box," similar to current US over-the-counter drug facts labeling; and (3) "Health Literacy," based on clear communication principles. Researchers evaluated the formats using the Suitability Assessment of Materials (SAM) tool and conducted structured, scripted, one-on-one interviews (usability tests) with participants with estimated low to average education levels. This research was replicated across 2 therapeutic areas (type 2 diabetes and plaque psoriasis). SAM scores showed that the Health Literacy format outperformed the Question and Answer format and the Prescription Drug Facts Box format in both therapeutic areas, with both Health Literacy brief summaries rated on the SAM as "superior." Qualitative usability tests supported the SAM findings, with the Health Literacy format preferred consistently over the Question and Answer format, and more often than not over the Prescription Drug Facts Box format. Sponsors can employ a user-tested Health Literacy format to improve the understandability and usability of brief summaries with patients.

Client Preferences for STD/HIV Prevention Programs.

ERIC Educational Resources Information Center

Hennessy, Michael; Mercier, Michele M.; Williams, Samantha P.; Arno, Janet N.

2002-01-01

Conducted a formative research study designed to elicit preferences for sexually transmitted disease (STD)/HIV prevention programs from clients at a midwestern STD clinic. Responses of 126 participants show preferences for mixed group or individual meetings with counselors, with extensive intervention less favored than single sessions. Discusses…

Memorable Messages for Navigating College Life

ERIC Educational Resources Information Center

Nazione, Samantha; Laplante, Carolyn; Smith, Sandi W.; Cornacchione, Jennifer; Russell, Jessica; Stohl, Cynthia

2011-01-01

This manuscript details an investigation of memorable messages that help students navigate college life using a control theory framework. Researchers conducted face-to-face interviews with 61 undergraduate students who recalled a specific memorable message that helped them as they navigated college. Results of this formative study show the…

Understanding the visual resource

Treesearch

Floyd L. Newby

1971-01-01

Understanding our visual resources involves a complex interweaving of motivation and cognitive recesses; but, more important, it requires that we understand and can identify those characteristics of a landscape that influence the image formation process. From research conducted in Florida, three major variables were identified that appear to have significant effect...

Formation of National Partnerships by Centers to Increase Diversity

NASA Astrophysics Data System (ADS)

Tolbert, M. E.

2008-05-01

As scientists seek innovative ways for their research results to have greater impact, they are using many strategies to implement their ideas to add value to the process. Some have decided to remain individual researchers while others have identified partners with whom to work. The idea behind forming partnerships is that a synergistic effect would result and there would be value added with a research center approach. Eight research center programs are sponsored by the National Science Foundation (NSF) to take advantage of this type of synergy. These centers form strong partnerships with multiple institutions thereby enabling the conduct of research, education, and knowledge transfer. The added value of the centers is critical as these interdisciplinary entities exploit opportunities in science, technology, engineering, and mathematics. Additionally, they address racial and ethnic diversity while conducting innovative research. Important for the survival of these centers is the formation of strong, long-term partnerships. In this presentation, Science and Technology Centers that focus on earth, atmospheric, and ocean sciences - fields in which racial and ethnic diversity is lacking - will be highlighted. These centers have developed recruitment and retention strategies to increase the number of under- represented minorities in these fields. The discussion will include a description of these strategies, degrees earned, and employment data on persons in the target fields. Special attention will be paid to partnerships and other characteristics that put these centers on the road to success, especially in the integration of research and education and the fostering of ethnic and racial diversity.

“We Make the Path by Walking It”: Building an Academic Community Partnership With Boston Chinatown

PubMed Central

Rubin, Carolyn Leung; Allukian, Nathan; Wang, Xingyue; Ghosh, Sujata; Huang, Chien-Chi; Wang, Jacy; Brugge, Doug; Wong, John B.; Mark, Shirley; Dong, Sherry; Koch-Weser, Susan; Parsons, Susan K.; Leslie, Laurel K.; Freund, Karen M.

2015-01-01

Background The potential for academic community partnerships are challenged in places where there is a history of conflict and mistrust. Addressing Disparities in Asian Populations through Translational Research (ADAPT) represents an academic community partnership between researchers and clinicians from Tufts Medical Center and Tufts University and community partners from Boston Chinatown. Based in principles of community-based participatory research and partnership research, this partnership is seeking to build a trusting relationship between Tufts and Boston Chinatown. Objectives This case study aims to provides a narrative story of the development and formation of ADAPT as well as discuss challenges to its future viability. Methods Using case study research tools, this study draws upon a variety of data sources including interviews, program evaluation data and documents. Results Several contextual factors laid the foundation for ADAPT. Weaving these factors together helped to create synergy and led to ADAPT’s formation. In its first year, ADAPT has conducted formative research, piloted an educational program for community partners and held stakeholder forums to build a broad base of support. Conclusions ADAPT recognizes that long term sustainability requires bringing multiple stakeholders to the table even before a funding opportunity is released and attempting to build a diversified funding base. PMID:25435562

Adapting Cognitive Interviewing for Early Adolescent Hispanic Girls and Sensitive Topics

PubMed Central

Norris, Anne E.; Torres-Thomas, Sylvia; Williams, Ellita T.

2015-01-01

Cognitive interviewing is a research technique commonly used in survey research to improve measurement validity. However, this technique is useful to researchers planning to use self-report measures in intervention research because invalidity of such measures jeopardizes detection of intervention effects. Little research currently exists regarding the use of cognitive interviewing techniques with adolescent populations, particularly those who are Hispanic. This article describes common challenges to conducting cognitive interviewing with early adolescent girls and how these challenges are impacted by Hispanic culture and sensitive topics. A focus group approach is recommended over the traditional one-on-one cognitive interview format, and experiences from actual focus groups, conducted in preparation for an intervention study are used to illustrate strategies for accomplishing the goals of cognitive interviewing. Creative and careful planning, attention to developmental considerations, and incorporation of cultural values are essential to the success of this approach. PMID:25239207

Liquid Sunshine to Fuel Your Car (A "Life at the Frontiers of Energy Research" contest entry from the 2011 Energy Frontier Research Centers (EFRCs) Summit and Forum)

DOE Office of Scientific and Technical Information (OSTI.GOV)

Breunig, Lloyd

"Liquid Sunshine to Fuel Your Car" was submitted by the Center for Lignocellulose Structure and Formation (CLSF) to the "Life at the Frontiers of Energy Research" video contest at the 2011 Science for Our Nation's Energy Future: Energy Frontier Research Centers (EFRCs) Summit and Forum. Twenty-six EFRCs created short videos to highlight their mission and their work. CLSF is directed by Daniel Cosgrove at Pennsylvania State University and is a partnership of scientists from three institutions: Penn State (lead), North Carolina State University, and Virginia Tech University. The Office of Basic Energy Sciences in the U.S. Department of Energy's Officemore » of Science established the 46 Energy Frontier Research Centers (EFRCs) in 2009. These collaboratively-organized centers conduct fundamental research focused on 'grand challenges' and use-inspired 'basic research needs' recently identified in major strategic planning efforts by the scientific community. The overall purpose is to accelerate scientific progress toward meeting the nation's critical energy challenges. The mission of the Center for Lignocellulose Structure and Formation is 'to dramatically increase our fundamental knowledge of the formation and physical interactions of bio-polymer networks in plant cell walls to provide a basis for improved methods for converting biomass into fuels.' Research topics are: biofuels (biomass), membrane, interfacial characterization, matter by design, and self-assembly.« less

Liquid Sunshine to Fuel Your Car (A "Life at the Frontiers of Energy Research" contest entry from the 2011 Energy Frontier Research Centers (EFRCs) Summit and Forum)

ScienceCinema

Cosgrove, Daniel (Director, Center for Lignocellulose Structure and Formation); CLSF Staff

2017-12-09

'Liquid Sunshine to Fuel Your Car' was submitted by the Center for Lignocellulose Structure and Formation (CLSF) to the 'Life at the Frontiers of Energy Research' video contest at the 2011 Science for Our Nation's Energy Future: Energy Frontier Research Centers (EFRCs) Summit and Forum. Twenty-six EFRCs created short videos to highlight their mission and their work. CLSF is directed by Daniel Cosgrove at Pennsylvania State University and is a partnership of scientists from three institutions: Penn State (lead), North Caroline State University, and Virginia Tech University. The Office of Basic Energy Sciences in the U.S. Department of Energy's Office of Science established the 46 Energy Frontier Research Centers (EFRCs) in 2009. These collaboratively-organized centers conduct fundamental research focused on 'grand challenges' and use-inspired 'basic research needs' recently identified in major strategic planning efforts by the scientific community. The overall purpose is to accelerate scientific progress toward meeting the nation's critical energy challenges. The mission of the Center for Lignocellulose Structure and Formation is 'to dramatically increase our fundamental knowledge of the formation and physical interactions of bio-polymer networks in plant cell walls to provide a basis for improved methods for converting biomass into fuels.' Research topics are: biofuels (biomass), membrane, interfacial characterization, matter by design, and self-assembly.

Geomechanical/Geochemical Modeling Studies Conducted within theInternational DECOVALEX Project

DOE Office of Scientific and Technical Information (OSTI.GOV)

Birkholzer, J.T.; Rutqvist, J.; Sonnenthal, E.L.

2005-10-19

The DECOVALEX project is an international cooperative project initiated by SKI, the Swedish Nuclear Power Inspectorate, with participation of about 10 international organizations. The general goal of this project is to encourage multidisciplinary interactive and cooperative research on modeling coupled thermo-hydro-mechanical-chemical (THMC) processes in geologic formations in support of the performance assessment for underground storage of radioactive waste. One of the research tasks, initiated in 2004 by the U.S. Department of Energy (DOE), addresses the long-term impact of geomechanical and geochemical processes on the flow conditions near waste emplacement tunnels. Within this task, four international research teams conduct predictive analysismore » of the coupled processes in two generic repositories, using multiple approaches and different computer codes. Below, we give an overview of the research task and report its current status.« less

Help for the Burned-Out Nurse?

ERIC Educational Resources Information Center

Buechler, Donna K.

1985-01-01

A study was conducted to determine if a structured support group with a counseling format could prevent or reduce the burnout of professional nurses in an acute care institution. Results of the study were inconclusive, leading the author to call for more research on the subject of burnout in nurses. (CT)

Collaborative Collections Management Programs in ARL Libraries. SPEC Kit 235.

ERIC Educational Resources Information Center

Soete, George J., Comp.

1998-01-01

This survey was conducted to discover how extensively ARL (Association of Research Libraries) libraries are involved in formal, active programs of collaboration for collections management. Seventy ARL libraries completed a questionnaire focusing on all collections formats and a number of related collections management activities. Results indicated…

Organizing and Conducting Farmer-Scientist Focus Sessions.

ERIC Educational Resources Information Center

Lev, Larry S.; And Others

1993-01-01

Farmer-scientist focus sessions represent a means by which participants exchange ideas for action, identify researchable topics, and enhance long-term farmer-scientist team work. Three examples involving controlling weeds, disposal of cull onion, and food safety concerns are described that illustrate the types of issues treated, the format, and…

Health and Fitness App Use in College Students: A Qualitative Study

ERIC Educational Resources Information Center

Gowin, Mary; Cheney, Marshall; Gwin, Shannon; Wann, Taylor Franklin

2015-01-01

Background: College students experience weight gain that can contribute to serious health issues. Health education efforts with college students are increasingly utilizing new technologies. Smartphone applications (apps) in particular are growing in popularity and use in all young adults. Purpose: Formative research was conducted to describe how…

Calculus Student Understanding of Continuity

ERIC Educational Resources Information Center

Wangle, Jayleen Lillian

2013-01-01

Continuity is a central concept in calculus. Yet very few students seem to understand the nature of continuity. The research described was conducted in two stages. Students were asked questions in multiple choice and true/false format regarding function, limit and continuity. These results were used to identify participants as strong, weak or…

Expanding Argument Instruction: Incorporating Multimodality and Digital Tools

ERIC Educational Resources Information Center

Howell, Emily

2018-01-01

The researcher conducted a formative experiment in a ninth- and a 10th-grade English classroom to observe a multiliteracies-based intervention implemented to improve high school students' arguments. Traditionally, argument is taught from a cognitive perspective, emphasizing concepts such as claims, evidence, and warrants. However, arguments are…

An adaptive community-based participatory approach to formative assessment with high schools for obesity intervention*.

PubMed

Kong, Alberta S; Farnsworth, Seth; Canaca, Jose A; Harris, Amanda; Palley, Gabriel; Sussman, Andrew L

2012-03-01

In the emerging debate around obesity intervention in schools, recent calls have been made for researchers to include local community opinions in the design of interventions. Community-based participatory research (CBPR) is an effective approach for forming community partnerships and integrating local opinions. We used CBPR principles to conduct formative research in identifying acceptable and potentially sustainable obesity intervention strategies in 8 New Mexico school communities. We collected formative data from 8 high schools on areas of community interest for school health improvement through collaboration with local School Health Advisory Councils (SHACs) and interviews with students and parents. A survey based on formative results was created to assess acceptability of specific intervention strategies and was provided to SHACs. Quantitative data were analyzed using descriptive statistics while qualitative data were evaluated using an iterative analytic process for thematic identification. Key themes identified through the formative process included lack of healthy food options, infrequent curricular/extracurricular physical activity opportunities, and inadequate exposure to health/nutritional information. Key strategies identified as most acceptable by SHAC members included healthier food options and preparation, a healthy foods marketing campaign, yearly taste tests, an after-school noncompetitive physical activity program, and community linkages to physical activity opportunities. An adaptive CBPR approach for formative assessment can be used to identify obesity intervention strategies that address community school health concerns. Eight high school SHACs identified 6 school-based strategies to address parental and student concerns related to obesity. © 2012, American School Health Association.

An Adaptive Community-Based Participatory Approach to Formative Assessment With High Schools for Obesity Intervention*

PubMed Central

Kong, Alberta S.; Farnsworth, Seth; Canaca, Jose A.; Harris, Amanda; Palley, Gabriel; Sussman, Andrew L.

2013-01-01

BACKGROUND In the emerging debate around obesity intervention in schools, recent calls have been made for researchers to include local community opinions in the design of interventions. Community-based participatory research (CBPR) is an effective approach for forming community partnerships and integrating local opinions. We used CBPR principles to conduct formative research in identifying acceptable and potentially sustainable obesity intervention strategies in 8 New Mexico school communities. METHODS We collected formative data from 8 high schools on areas of community interest for school health improvement through collaboration with local School Health Advisory Councils (SHACs) and interviews with students and parents. A survey based on formative results was created to assess acceptability of specific intervention strategies and was provided to SHACs. Quantitative data were analyzed using descriptive statistics while qualitative data were evaluated using an iterative analytic process for thematic identification. RESULTS Key themes identified through the formative process included lack of healthy food options, infrequent curricular/extracurricular physical activity opportunities, and inadequate exposure to health/nutritional information. Key strategies identified as most acceptable by SHAC members included healthier food options and preparation, a healthy foods marketing campaign, yearly taste tests, an after-school noncompetitive physical activity program, and community linkages to physical activity opportunities. CONCLUSION An adaptive CBPR approach for formative assessment can be used to identify obesity intervention strategies that address community school health concerns. Eight high school SHACs identified 6 school-based strategies to address parental and student concerns related to obesity. PMID:22320339

Challenges in conducting qualitative research in health: A conceptual paper

PubMed Central

Khankeh, Hamidreza; Ranjbar, Maryam; Khorasani-Zavareh, Davoud; Zargham-Boroujeni, Ali; Johansson, Eva

2015-01-01

Background: Qualitative research focuses on social world and provides the tools to study health phenomena from the perspective of those experiencing them. Identifying the problem, forming the question, and selecting an appropriate methodology and design are some of the initial challenges that researchers encounter in the early stages of any research project. These problems are particularly common for novices. Materials and Methods: This article describes the practical challenges of using qualitative inquiry in the field of health and the challenges of performing an interpretive research based on professional experience as a qualitative researcher and on available literature. Results: One of the main topics discussed is the nature of qualitative research, its inherent challenges, and how to overcome them. Some of those highlighted here include: identification of the research problem, formation of the research question/aim, and selecting an appropriate methodology and research design, which are the main concerns of qualitative researchers and need to be handled properly. Insights from real-life experiences in conducting qualitative research in health reveal these issues. Conclusions: The paper provides personal comments on the experiences of a researcher in conducting pure qualitative research in the field of health. It offers insights into the practical difficulties encountered when performing qualitative studies and offers solutions and alternatives applied by these authors, which may be of use to others. PMID:26793245

Community member and faith leader perspectives on the process of building trusting relationships between communities and researchers.

PubMed

Lakes, Kimberley D; Vaughan, Elaine; Pham, Jennifer; Tran, Tuyet; Jones, Marissa; Baker, Dean; Swanson, James M; Olshansky, Ellen

2014-02-01

In the first phase of this research, we conducted, audio-recorded, and transcribed seven focus groups with more than 50 English- or Spanish-speaking women of childbearing age. Qualitative analysis revealed the following themes: (1) expectation that participation would involve relationships based on trust that is built over time and impacted by cultural factors; (2) perceived characteristics of research staff that would help facilitate the development of trusting relationships; (3) perceptions about the location of the visits that may affect trust; (4) perceptions of a research study and trust for the institution conducting the study may affect trust; (5) connecting the study to larger communities, including faith communities, could affect trust and willingness to participate. In the second phase of this research, we conducted, recorded, transcribed, and analyzed interviews with leaders from diverse faith communities to explore the potential for research partnerships between researchers and faith communities. In addition to confirming themes identified in focus groups, faith leaders described an openness to research partnerships between the university and faith communities and considerations for the formation of these partnerships. Faith leaders noted the importance of finding common ground with researchers, establishing and maintaining trusting relationships, and committing to open, bidirectional communication. © 2014 Wiley Periodicals, Inc.

Community Member and Faith Leader Perspectives on the Process of Building Trusting Relationships between Communities and Researchers

PubMed Central

Vaughan, Elaine; Pham, Jennifer; Tran, Tuyet; Jones, Marissa; Baker, Dean; Swanson, James M.; Olshansky, Ellen

2014-01-01

Abstract In the first phase of this research, we conducted, audio‐recorded, and transcribed seven focus groups with more than 50 English‐ or Spanish‐speaking women of childbearing age. Qualitative analysis revealed the following themes: (1) expectation that participation would involve relationships based on trust that is built over time and impacted by cultural factors; (2) perceived characteristics of research staff that would help facilitate the development of trusting relationships; (3) perceptions about the location of the visits that may affect trust; (4) perceptions of a research study and trust for the institution conducting the study may affect trust; (5) connecting the study to larger communities, including faith communities, could affect trust and willingness to participate. In the second phase of this research, we conducted, recorded, transcribed, and analyzed interviews with leaders from diverse faith communities to explore the potential for research partnerships between researchers and faith communities. In addition to confirming themes identified in focus groups, faith leaders described an openness to research partnerships between the university and faith communities and considerations for the formation of these partnerships. Faith leaders noted the importance of finding common ground with researchers, establishing and maintaining trusting relationships, and committing to open, bidirectional communication. PMID:24405695

Neurology Research in Saudi Arabia: Urgent call for action.

PubMed

Algahtani, Hussein; Shirah, Bader; Boker, Faisal; Algamdi, Albaraa; Alkahtani, Abdulah

2017-08-01

Research activities in Saudi Arabia are promoted at the governmental and institutional levels. However, the output and quality of research conducted in the field of neurology has not yet been measured quantitatively. This study therefore aimed to analyse neurology-related publications from Saudi Arabia. This study was conducted in January 2016. A systematic search using the PubMed ® search engine (National Library of Medicine, Bethesda, Maryland, USA) was conducted to identify all neurology-related articles published from Saudi Arabia between January 1996 and December 2015. A total of 1,292 neurology-related publications were identified. Neurology research increased linearly with time, with most publications originating from Riyadh (67%) and the university sector (≈47%). However, most neurology-related articles were published in journals which had an impact factor of <1 (55%). Neurology research in Saudi Arabia has increased substantially over the last 20 years. However, as most articles were published in low-impact journals, the quality of research remains inadequate and should be improved. It is important that an official research culture be established in both governmental and private universities as well as colleges and health institutions in Saudi Arabia. The formation of clinical academic departments staffed by research experts is recommended to ensure the quality of neurology research output.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Siegrist, R.L.; Hildmann-Smed, R.; Filip, Z.K.

Soil infiltration of wastewater effluents is a widely practiced method of treatment and disposal/reuse throughout the world. Renovation of the wastewater results from a wide variety of complex physicochemical and biological processes. One set of processes is speculated to involve the accumulation of organic matter by filtration and sorption followed by formation of humic substances. This humic substance formation can effect the performance of soil treatment systems by contributing to soil pore clogging and reduction in hydraulic capacity, and by yielding reactive substances and an enhancement of purification processes. While there has been a wealth of research into the naturemore » and genesis of humic substances in terrestrial environments, there has been limited research of humic substance formation during soil infiltration of wastewater. The purpose of the research reported herein was to determine if humic substances can form under conditions typical of those present during wastewater infiltration into natural soil systems. This work was conducted during 1989 to 1990 as a collaborative effort between the Centre for Soil and Environmental Research, located in Aas, Norway and the Institute for Water, Soil and Air Hygiene located in Langen, West Germany. 11 refs., 3 figs., 6 tabs.« less

The use of theory based semistructured elicitation questionnaires: formative research for CDC's Prevention Marketing Initiative.

PubMed Central

Middlestadt, S E; Bhattacharyya, K; Rosenbaum, J; Fishbein, M; Shepherd, M

1996-01-01

Through one of its many HIV prevention programs, the Prevention Marketing Initiative, the Centers for Disease Control and Prevention promotes a multifaceted strategy for preventing the sexual transmission of HIV/AIDS among people less than 25 years of age. The Prevention Marketing Initiative is an application of marketing and consumer-oriented technologies that rely heavily on behavioral research and behavior change theories to bring the behavioral and social sciences to bear on practical program planning decisions. One objective of the Prevention Marketing Initiative is to encourage consistent and correct condom use among sexually active young adults. Qualitative formative research is being conducted in several segments of the population of heterosexually active, unmarried young adults between 18 and 25 using a semistructured elicitation procedure to identify and understand underlying behavioral determinants of consistent condom use. The purpose of this paper is to illustrate the use of this type of qualitative research methodology in designing effective theory-based behavior change interventions. Issues of research design and data collection and analysis are discussed. To illustrate the methodology, results of content analyses of selected responses to open-ended questions on consistent condom use are presented by gender (male, female), ethnic group (white, African American), and consistency of condom use (always, sometimes). This type of formative research can be applied immediately to designing programs and is invaluable for valid and relevant larger-scale quantitative research. PMID:8862153

The use of theory based semistructured elicitation questionnaires: formative research for CDC's Prevention Marketing Initiative.

PubMed

Middlestadt, S E; Bhattacharyya, K; Rosenbaum, J; Fishbein, M; Shepherd, M

1996-01-01

Through one of its many HIV prevention programs, the Prevention Marketing Initiative, the Centers for Disease Control and Prevention promotes a multifaceted strategy for preventing the sexual transmission of HIV/AIDS among people less than 25 years of age. The Prevention Marketing Initiative is an application of marketing and consumer-oriented technologies that rely heavily on behavioral research and behavior change theories to bring the behavioral and social sciences to bear on practical program planning decisions. One objective of the Prevention Marketing Initiative is to encourage consistent and correct condom use among sexually active young adults. Qualitative formative research is being conducted in several segments of the population of heterosexually active, unmarried young adults between 18 and 25 using a semistructured elicitation procedure to identify and understand underlying behavioral determinants of consistent condom use. The purpose of this paper is to illustrate the use of this type of qualitative research methodology in designing effective theory-based behavior change interventions. Issues of research design and data collection and analysis are discussed. To illustrate the methodology, results of content analyses of selected responses to open-ended questions on consistent condom use are presented by gender (male, female), ethnic group (white, African American), and consistency of condom use (always, sometimes). This type of formative research can be applied immediately to designing programs and is invaluable for valid and relevant larger-scale quantitative research.

The Impact of Incentives on Exercise Behavior: A Systematic Review of Randomized Controlled Trials

PubMed Central

Strohacker, Kelley; Galarraga, Omar; Williams, David M.

2015-01-01

Background The effectiveness of reinforcing exercise behavior with material incentives is unclear. Purpose Conduct a systematic review of existing research on material incentives for exercise, organized by incentive strategy. Methods Ten studies conducted between January 1965 and June 2013 assessed the impact of incentivizing exercise compared to a non-incentivized control. Results There was significant heterogeneity between studies regarding reinforcement procedures and outcomes. Incentives tended to improve behavior during the intervention while findings were mixed regarding sustained behavior after incentives were removed. Conclusions The most effective incentive procedure is unclear given the limitations of existing research. The effectiveness of various incentive procedures in promoting initial behavior change and habit formation, as well as the use of sustainable incentive procedures should be explored in future research. PMID:24307474

DOE Office of Scientific and Technical Information (OSTI.GOV)

Seinfeld, John H.

This project addressed the following research need in the Atmospheric System Research (ASR) Science and Program Plan: "Measurements downwind of urban sources of aerosol particles and precursor gases have shown that the mass concentration of secondary organic aerosol (SOA) can be several-fold greater than can be explained on the basis of current model calculations using observed precursor concentrations. ASR will continue conducting laboratory experiments on both gas-phase and aqueous-phase SOA formation to characterize the particle formation and the organic gases that react to form new organic aerosol material on aerosol seeds. ASR will use these experiments to guide the developmentmore » of comprehensive chemical mechanisms... to guide the development of parameterizations that are simple enough to be applied to aerosol life cycle models."« less

Evaluation of two cockpit display concepts for civil tiltrotor instrument operations on steep approaches

NASA Technical Reports Server (NTRS)

Decker, William A.; Bray, Richard S.; Simmons, Rickey C.; Tucker, George E.

1993-01-01

A piloted simulation experiment was conducted using the NASA Ames Research Center Vertical Motion Simulator to evaluate two cockpit display formats designed for manual control on steep instrument approaches for a civil transport tiltrotor aircraft. The first display included a four-cue (pitch, roll, power lever position, and nacelle angle movement prompt) flight director. The second display format provided instantaneous flight path angle information together with other symbols for terminal area guidance. Pilots evaluated these display formats for an instrument approach task which required a level flight conversion from airplane-mode flight to helicopter-mode flight while decelerating to the nominal approach airspeed. Pilots tracked glide slopes of 6, 9, 15 and 25 degrees, terminating in a hover for a vertical landing on a 150 feet square vertipad. Approaches were conducted with low visibility and ceilings and with crosswinds and turbulence, with all aircraft systems functioning normally and were carried through to a landing. Desired approach and tracking performance was achieved with generally satisfactory handling qualities using either display format on glide slopes up through 15 degrees. Evaluations with both display formats for a 25 degree glide slope revealed serious problems with glide slope tracking at low airspeeds in crosswinds and the loss of the intended landing spot from the cockpit field of view.

In-Situ Observation of Nano-Oxide Formation in Magnetic Thin Films

NASA Astrophysics Data System (ADS)

McCallum, Andrew; Russek, Stephen

2004-03-01

Exposure of a metal surface in a spin valve structure to oxygen creates a nano-oxide layer, or NOL, on that surface. Inclusion of NOLs into spin valve structures has been shown by many researchers to lower the resistance and increase the giant magnetoresistance effect. Four point in-situ conductance measurements were made during the deposition and oxidation of Co layers. These measurements show an initial decrease in conductance followed by an increase in conductance, due to a specularity increase of at least 0.10. RHEED measurements taken simultaneously with conductance measurements show the formation an amorphous oxide while the specularity increases. With further exposure of oxygen to the surface a CoO structure with a (111) texture forms. Magnetoconductance measurements during the oxidation of the free layer of bottom pinned spin valves show increases in the GMR of the spin valves. Estimates of the change in specularity and Co layer thickness were determined from the change in conductance and the change in magnetoconductance. Also determined from the magnetoconductance measurements was an increase in the coercivity of the free layer with oxidation. Adding Co onto the oxide had a strong effect on the coercivity and coupling between free and pinned layers.

Exploring the Connections between Self, Cognition, and Behavior.

ERIC Educational Resources Information Center

Hull, Jay G.; And Others

Much research has found that information encoded according to its self-relevance is more easily recalled than information encoded according to other formats. Two experiments were conducted to examine potential moderators of the processes involved in self-relevant memory. In the first study, the hypothesis was tested that self-relevant encoding is…

76 FR 23608 - Revision to Proposed Collection; Comment Request; Formative Research Methodology Studies for the...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-27

... conduct survey and instrument design and administration, focus groups, cognitive interviews, and health..., recruitment, consent and questionnaire design, and retention activities. Under separate notice, the NCS also... study of this size and complexity, the NCS was designed to include a preliminary pilot study known as...

National Institute Of Education Project for Pre-Doctoral Fellows at the University of Tennessee, Knoxville.

ERIC Educational Resources Information Center

Banta, Trudy W.; And Others

A formative evaluation of a University of Tennessee, Knoxville, predoctoral project was conducted. The program, which was funded by the federal Minorities and Women's Program, was designed to increase the participation of minorities and women in educational research and development. The project, "Experimental Program for Opportunities in…

Molecular Astrophysics from Space: the Physical and Chemical Effects of Star Formation and the Destruction of Planetary Systems around Evolved Stars

NASA Technical Reports Server (NTRS)

Neufeld, David

2005-01-01

The research conducted during the reporting period is grouped into three sections: 1) Warm molecular gas in the interstellar medium (ISM); 2) Absorption line studies of "cold" molecular clouds; 3) Vaporization of comets around the AGB star IRC+10216.

An Investigation of Bioecological Influences Associated with First Use of Methamphetamine in a Rural State

ERIC Educational Resources Information Center

Bowen, Anne; Moring, John; Williams, Mark; Hopper, Glenna; Daniel, Candice

2012-01-01

Purpose: Methamphetamine (MA) addiction is a significant problem in rural areas of the United States. Yet, little theoretically driven formative research has been conducted on the interactions of factors influencing initiation. The study was guided by Bronfenbrenner's bioecological model. Methods: Eighty-three MA users participated in an…

Modelling of auroral electrodynamical processes: Magnetosphere to mesosphere

NASA Technical Reports Server (NTRS)

Chiu, Y. T.; Gorney, D. J.; Kishi, A. M.; Newman, A. L.; Schulz, M.; Walterscheid, R. L.; CORNWALL; Prasad, S. S.

1982-01-01

Research conducted on auroral electrodynamic coupling between the magnetosphere and ionosphere-atmosphere in support of the development of a global scale kinetic plasma theory is reviewed. Topics covered include electric potential structure in the evening sector; morning and dayside auroras; auroral plasma formation; electrodynamic coupling with the thermosphere; and auroral electron interaction with the atmosphere.

Effectiveness of Electronic Textbooks with Embedded Activities on Student Learning

ERIC Educational Resources Information Center

Porter, Paula L.

2010-01-01

Current versions of electronic textbooks mimic the format and structure of printed textbooks; however, the electronic capabilities of these new versions of textbooks offer the potential of embedding interactive features of web-based learning within the context of a textbook. This dissertation research study was conducted to determine if student…

Exploring Boaters' Environmental Views for a Marine Conservation Campaign

ERIC Educational Resources Information Center

DeLorme, Denise; Neuberger, Lindsay; Wright, James

2015-01-01

This article reports on formative research as part of a broader interdisciplinary campaign to increase voluntary environmentally responsible boating in a local lagoon. A telephone survey was conducted with a sample (N = 404) of targeted boaters to explore their views on the environmental issue and motivations to perform the desired behavior.…

Desktop Publishing: The Effects of Computerized Formats on Reading Speed and Comprehension.

ERIC Educational Resources Information Center

Knupfer, Nancy Nelson; McIsaac, Marina Stock

1989-01-01

Describes study that was conducted to determine the effects of two electronic text variables used in desktop publishing on undergraduate students' reading speed and comprehension. Research on text variables, graphic design, instructional text design, and computer screen design is discussed, and further studies are suggested. (22 references) (LRW)

TV 101: Good Broadcast Journalism for the Classroom?

ERIC Educational Resources Information Center

Haney, James M.

A study was conducted to assess the arguments that have been made in favor of and opposed to the electronic curricular supplements, Channel One and CNN Newsroom. Four types of information were analyzed: (1) corporate news releases and research results were reviewed; (2) Channel One and CNN Newsroom programs were studied for format, style, and…

A Typology for Observing Children's Engagement with eBooks at Preschool

ERIC Educational Resources Information Center

Roskos, Kathleen; Burstein, Karen; You, Byeong-Keun

2012-01-01

This research reports a two-phase descriptive study of young children's engagement with ebooks conducted in Head Start classrooms. Phase 1 focused on the development of a typology as an analytic framework for observing engagement with ebooks in different formats (shared book; independent book browsing) and across devices (stationary touch screen;…

Experiences of Instructors in Online Learning Environments: Identifying and Regulating Emotions

ERIC Educational Resources Information Center

Regan, Kelley; Evmenova, Anna; Baker, Pam; Jerome, Marci Kinas; Spencer, Vicky; Lawson, Holly; Werner, Terry

2012-01-01

In an effort to expand existing research on the barriers of instructors experience in online learning environments (OLEs), a qualitative study was conducted at a large mid-Atlantic university. Six instructors teaching in different OLE formats (e.g., asynchronous, hybrid, and synchronous via videoconferencing) participated in two focus groups in…

Nutrition education program for food bank clients: A pilot study

USDA-ARS?s Scientific Manuscript database

Many low income families depend on foods from food banks. The objective of the study was to determine program content and examine feasibility of a pilot nutrition education program for food bank clients. Formative research was conducted with staff at a local food bank and its pantries and adult clie...

Developing a Comprehensive and Articulated Nuclear Training Curriculum--The Westinghouse Model.

ERIC Educational Resources Information Center

Widen, William C.

After conducting a comprehensive evaluation of its curriculum, staff at the Westinghouse Nuclear Training Center in Zion, Illinois, undertook a research and development project aimed at upgrading the center's curriculum to the competency-based format. Included among the main activities of the curriculum development process were the following:…

Education in health research methodology: use of a wiki for knowledge translation.

PubMed

Hamm, Michele P; Klassen, Terry P; Scott, Shannon D; Moher, David; Hartling, Lisa

2013-01-01

A research-practice gap exists between what is known about conducting methodologically rigorous randomized controlled trials (RCTs) and what is done. Evidence consistently shows that pediatric RCTs are susceptible to high risk of bias; therefore novel methods of influencing the design and conduct of trials are required. The objective of this study was to develop and pilot test a wiki designed to educate pediatric trialists and trainees in the principles involved in minimizing risk of bias in RCTs. The focus was on preliminary usability testing of the wiki. The wiki was developed through adaptation of existing knowledge translation strategies and through tailoring the site to the identified needs of the end-users. The wiki was evaluated for usability and user preferences regarding the content and formatting. Semi-structured interviews were conducted with 15 trialists and systematic reviewers, representing varying levels of experience with risk of bias or the conduct of trials. Data were analyzed using content analysis. Participants found the wiki to be well organized, easy to use, and straightforward to navigate. Suggestions for improvement tended to focus on clarification of the text or on esthetics, rather than on the content or format. Participants liked the additional features of the site that were supplementary to the text, such as the interactive examples, and the components that focused on practical applications, adding relevance to the theory presented. While the site could be used by both trialists and systematic reviewers, the lack of a clearly defined target audience caused some confusion among participants. Participants were supportive of using a wiki as a novel educational tool. The results of this pilot test will be used to refine the risk of bias wiki, which holds promise as a knowledge translation intervention for education in medical research methodology.

Education in Health Research Methodology: Use of a Wiki for Knowledge Translation

PubMed Central

Hamm, Michele P.; Klassen, Terry P.; Scott, Shannon D.; Moher, David; Hartling, Lisa

2013-01-01

Introduction A research-practice gap exists between what is known about conducting methodologically rigorous randomized controlled trials (RCTs) and what is done. Evidence consistently shows that pediatric RCTs are susceptible to high risk of bias; therefore novel methods of influencing the design and conduct of trials are required. The objective of this study was to develop and pilot test a wiki designed to educate pediatric trialists and trainees in the principles involved in minimizing risk of bias in RCTs. The focus was on preliminary usability testing of the wiki. Methods The wiki was developed through adaptation of existing knowledge translation strategies and through tailoring the site to the identified needs of the end-users. The wiki was evaluated for usability and user preferences regarding the content and formatting. Semi-structured interviews were conducted with 15 trialists and systematic reviewers, representing varying levels of experience with risk of bias or the conduct of trials. Data were analyzed using content analysis. Results Participants found the wiki to be well organized, easy to use, and straightforward to navigate. Suggestions for improvement tended to focus on clarification of the text or on esthetics, rather than on the content or format. Participants liked the additional features of the site that were supplementary to the text, such as the interactive examples, and the components that focused on practical applications, adding relevance to the theory presented. While the site could be used by both trialists and systematic reviewers, the lack of a clearly defined target audience caused some confusion among participants. Conclusions Participants were supportive of using a wiki as a novel educational tool. The results of this pilot test will be used to refine the risk of bias wiki, which holds promise as a knowledge translation intervention for education in medical research methodology. PMID:23741424

Development of a cancer clinical trials multi-media intervention: clinical trials: are they right for you?

PubMed

Wells, Kristen J; Quinn, Gwendolyn P; Meade, Cathy D; Fletcher, Michelle; Tyson, Dinorah Martinez; Jim, Heather; Jacobsen, Paul B

2012-08-01

To describe processes used to develop a multi-media psycho-educational intervention to prepare patients for a discussion about cancer clinical trials (CTs). Guided by a Steering Committee, formative research was conducted to develop an informative and engaging tool about cancer CTs. Twenty-three patients and caregivers participated in formative in-depth interviews to elicit information about perceptions of cancer CTs to inform production of a new media product. Formative research revealed participants had concerns about experimentation, held beliefs that cancer CTs were for patients who had no other treatment options, and wanted a balance of information about pros and cons of CT participation. The value of physicians as credible spokespersons and the use of patients as role-models were supported. Using iterative processes, the production team infused the results into creation of a multimedia psycho-educational intervention titled Clinical Trials: Are they Right for You? An intervention, developed through an iterative consumer-focused process involving multiple stakeholders and formative research, may result in an engaging informative product. If found to be efficacious, Clinical Trials: Are they Right for You? is a low-cost and easily disseminated multimedia psycho-educational intervention to assist cancer patients with making an informed decision about cancer CTs. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

Experimental methods for the simulation of supercritical CO2 injection at laboratory scale aimed to investigate capillary trapping

NASA Astrophysics Data System (ADS)

Trevisan, L.; Illangasekare, T. H.; Rodriguez, D.; Sakaki, T.; Cihan, A.; Birkholzer, J. T.; Zhou, Q.

2011-12-01

Geological storage of carbon dioxide in deep geologic formations is being considered as a technical option to reduce greenhouse gas loading to the atmosphere. The processes associated with the movement and stable trapping are complex in deep naturally heterogeneous formations. Three primary mechanisms contribute to trapping; capillary entrapment due to immobilization of the supercritical fluid CO2 within soil pores, liquid CO2 dissolving in the formation water and mineralization. Natural heterogeneity in the formation is expected to affect all three mechanisms. A research project is in progress with the primary goal to improve our understanding of capillary and dissolution trapping during injection and post-injection process, focusing on formation heterogeneity. It is expected that this improved knowledge will help to develop site characterization methods targeting on obtaining the most critical parameters that capture the heterogeneity to design strategies and schemes to maximize trapping. This research combines experiments at the laboratory scale with multiphase modeling to upscale relevant trapping processes to the field scale. This paper presents the results from a set of experiments that were conducted in an intermediate scale test tanks. Intermediate scale testing provides an attractive alternative to investigate these processes under controlled conditions in the laboratory. Conducting these types of experiments is highly challenging as methods have to be developed to extrapolate the data from experiments that are conducted under ambient laboratory conditions to high temperatures and pressures settings in deep geologic formations. We explored the use of a combination of surrogate fluids that have similar density, viscosity contrasts and analogous solubility and interfacial tension as supercritical CO2-brine in deep formations. The extrapolation approach involves the use of dimensionless numbers such as Capillary number (Ca) and the Bond number (Bo). A set of experiments that captures some of the complexities of the geologic heterogeneity and injection scenarios are planned in a 4.8 m long tank. To test the experimental methods and instrumentation, a set of preliminary experiments were conducted in a smaller tank with dimensions 90 cm x 60 cm. The tank was packed to represent both homogeneous and heterogeneous conditions. Using the surrogate fluids, different injection scenarios were tested. Images of the migration plume showed the critical role that heterogeneity plays in stable entrapment. Destructive sampling done at the end of the experiments provided data on the final saturation distributions. Preliminary analysis suggests the entrapment configuration is controlled by the large-scale heterogeneities as well as the pore-scale entrapment mechanisms. The data was used in modeling analysis that is presented in a companion abstract.

Worksite Environmental Interventions for Obesity Prevention and Control: Evidence from Group Randomized Trials.

PubMed

Fernandez, Isabel Diana; Becerra, Adan; Chin, Nancy P

2014-06-01

Worksites provide multiple advantages to prevent and treat obesity and to test environmental interventions to tackle its multiple causal factors. We present a literature review of group-randomized and non-randomized trials that tested worksite environmental, multiple component interventions for obesity prevention and control paying particular attention to the conduct of formative research prior to intervention development. The evidence on environmental interventions on measures of obesity appears to be strong since most of the studies have a low (4/8) and unclear (2/8) risk of bias. Among the studies reviewed whose potential risk of bias was low, the magnitude of the effect was modest and sometimes in the unexpected direction. None of the four studies describing an explicit formative research stage with clear integration of findings into the intervention was able to demonstrate an effect on the main outcome of interest. We present alternative explanation for the findings and recommendations for future research.

Formative research to promote the Get Healthy Information and Coaching Service (GHS) in the Australian-Chinese community.

PubMed

Cranney, Leonie; Wen, Li Ming; Xu, Huilan; Tam, Nancy; Whelan, Anna; Hua, Myna; Ahmed, Nageen

2018-05-09

The free, telephone-based Get Healthy Information and Coaching Service (GHS) has made sustained improvements in healthy behaviours and weight change in the Australian population, but there is poor uptake of the GHS by culturally and linguistically diverse communities. This formative research study explored the Australian-Chinese community's awareness, perceptions and experiences of the GHS and their knowledge and cultural beliefs about healthy lifestyles. Conducted in Sydney, Australia, the research included 16 Chinese community-stakeholder interviews, a cross-sectional survey of 253 Chinese community members; and a review of Chinese participant GHS data. The study revealed poor uptake (<1%) and awareness (16%) of the GHS, but good intent (86%) to use it. The need for culturally appropriate and relevant information on healthy eating and physical activity was identified. Employment of a bilingual, bicultural coach, redesign and translation of written resources and targeted promotion in partnership with community organisations were recommended.

Fusion policy advisory committee named

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

Department of Energy Secretary James Watkins has announced the formation of new Fusion Policy Advisory Committee which will recommend a policy for conducting DOE's fusion energy research program. Issues that will be considered by the committee include the balance of research activities within the programs, the timing of experiments to test the burning of plasma fuel, the International Thermonuclear Experimental Reactor, and the development of laser technologies, DOE said. Watkins said that he would be entirely open to the committee's advice.

The impact of the participation of settlers to the formation of environment in Kampung Nelayan Belawan Medan

NASA Astrophysics Data System (ADS)

Marpaung, B. O. Y.; Waginah

2018-03-01

Every existence of community settlements that formed has related to social, culture, and economy that exists in that society. Participation is a process that involving human interaction towards each other, of these interactions creates activities that potentially form a new space (Hendriksen, et al., 2012). Problems in this research are related to community involvement in building residential, determining land used, building roads, and utilities in Kampung Nelayan Belawan Medan residential. The aim of this research is to find the community involvement of building residential, determining land used, building roads, and utilities in Kampung Nelayan Belawan Medan residential. In the process of collecting data, researchers conducted field observation and interviews. Then the researchers connect the theory and interpretation of data in determining the method of data analysis. Then the researchers connect the theory and interpretation of data in determining the method of data analysis. The discovery of this research is that the formation of settlement spaces in the fishing village is inseparable from the participation in Kampung Nelayan Belawan Medan residential.

Education review: a computer-assisted instructional tool to assist students in developing an epidemiological research proposal.

PubMed

Watzlaf, V J; Addeo, L; Nous, A

1995-11-01

The development of an epidemiological research proposal can be a difficult assignment for junior health information management students. The article demonstrates how a computer-assisted instructional (CAI) tool was developed to assist students in the development of an epidemiological research proposal. Surveys were conducted to determine where students were having the most problems, information about writing a research proposal was gathered and organized into an appropriate format, appropriate software (Hypercard) was chosen, the final CAI tool (the Research and Grant Writer) was developed, and positive feedback was obtained from junior health information management students using the CAI tool.

Formative research and strategic development of a physical activity component to a social marketing campaign for obesity prevention in preschoolers.

PubMed

Bellows, Laura; Anderson, Jennifer; Gould, Susan Martin; Auld, Garry

2008-06-01

The prevalence of overweight in childhood, including preschoolers, continues to rise. While efforts focusing on school-aged children are encouraging, obesity prevention programs to address nutrition and physical activity in the child care center are lacking. Food Friends is a successfully evaluated nutrition program aimed at enhancing preschoolers' food choices, the addition of a physical activity program would improve the programs overall efforts to establish healthful habits early in life. This study describes the formative research conducted with secondary influencers of preschoolers-teachers and parents-for the development of a physical activity program. Key informant interviews and focus group discussions were conducted with preschool teachers and parents, respectively, to examine current physical activity practices, as well as attitudes, opinions, and desired wants and needs for physical activity materials. Findings illustrate that teachers provided physical activity; however, most did not use a structured program. Teachers identified time, space and equipment as barriers to providing activity in their classroom. Focus group findings identified activities of preschoolers', parents' perceptions of the adequacy of activity levels, and items to help parents engage their children in more physical activity. Barriers were also identified by parents and included time, safety, inclement weather, and lack of knowledge and self-efficacy. Findings from this formative research were used to develop a marketing strategy to guide the development of a physical activity component, Food Friends Get Movin' with Mighty Moves , as part of a larger social marketing campaign aimed to decrease the risk for obesity in low-income preschoolers.

Computer systems and software engineering

NASA Technical Reports Server (NTRS)

Mckay, Charles W.

1988-01-01

The High Technologies Laboratory (HTL) was established in the fall of 1982 at the University of Houston Clear Lake. Research conducted at the High Tech Lab is focused upon computer systems and software engineering. There is a strong emphasis on the interrelationship of these areas of technology and the United States' space program. In Jan. of 1987, NASA Headquarters announced the formation of its first research center dedicated to software engineering. Operated by the High Tech Lab, the Software Engineering Research Center (SERC) was formed at the University of Houston Clear Lake. The High Tech Lab/Software Engineering Research Center promotes cooperative research among government, industry, and academia to advance the edge-of-knowledge and the state-of-the-practice in key topics of computer systems and software engineering which are critical to NASA. The center also recommends appropriate actions, guidelines, standards, and policies to NASA in matters pertinent to the center's research. Results of the research conducted at the High Tech Lab/Software Engineering Research Center have given direction to many decisions made by NASA concerning the Space Station Program.

Research design of decision support system for team sport

NASA Astrophysics Data System (ADS)

Abidin, Mohammad Zukuwwan Zainol; Nawawi, Mohd Kamal Mohd; Kasim, Maznah Mat

2016-10-01

This paper proposes a suitable research procedure that can be referred to while conducting a Decision Support System (DSS) study, especially when the development activity of system artifacts becomes one of the research objectives. The design of the research procedure was based on the completion of a football DSS development that can help in determining the position of a player and the best team formation to be used during a game. After studying the relevant literature, we found that it is necessary to combine the conventional rainfall System Development Life Cycle (SDLC) approach with Case Study approach to help in structuring the research task and phases, which can contribute to the fulfillment of the research aim and objectives.

Studies of the generation mechanisms of steady vortex formations in the channels of nuclear-power installations for purposes of improving the reliability and safety of their work

NASA Astrophysics Data System (ADS)

Mitrofanova, O.

2017-01-01

The analysis of the results of experimental researches on revealing the mechanisms of vortex formation in channels of complex geometry in the neutral and conductive media is carried out. The directions of researches related to the study of mechanisms of vortex generation and accumulation of energy by large-scale vortex structures are considered for the possibility of predictions of the man-made accidents and catastrophic natural phenomena. The main goal of ongoing investigations is the solution of the task aimed at improving the safety of nuclear power installations and, in particular, of the fast neutron reactors with liquid-metal coolants, and the prevention of emergency modes arising from acoustic, magnetic and hydrodynamic resonance effects.

Materials Research Conducted Aboard the International Space Station: Facilities Overview, Operational Procedures, and Experimental Outcomes

NASA Technical Reports Server (NTRS)

Grugel, Richard N.; Luz, Paul; Smith, Guy; Spivey, Reggie; Jeter, Linda; Gillies, Donald; Hua, Fay; Anikumar, A. V.

2007-01-01

The Microgravity Science Glovebox (MSG) and Maintenance Work Area (MWA) are facilities aboard the International Space Station (ISS) that were used to successfully conduct experiments in support of, respectively, the Pore Formation and Mobility Investigation (PFMI) and the In-Space Soldering Investigation (ISSI). The capabilities of these facilities are briefly discussed and then demonstrated by presenting "real-time" and subsequently down-linked video-taped examples from the abovementioned experiments. Data interpretation, ISS telescience, some lessons learned, and the need of such facilities for conducting work in support of understanding materials behavior, particularly fluid processing and transport scenarios, in low-gravity environments is discussed.

Materials Research Conducted Aboard the International Space Station: Facilities Overview, Operational Procedures, and Experimental Outcomes

NASA Technical Reports Server (NTRS)

Grugel, R. N.; Luz, P.; Smith, G. A.; Spivey, R.; Jeter, L.; Gillies, D. C.; Hua, F.; Anilkumar, A. V.

2006-01-01

The Microgravity Science Glovebox (MSG) and Maintenance Work Area (MWA) are facilities aboard the International Space Station (ISS) that were used to successfully conduct experiments in support of, respectively, the Pore Formation and Mobility Investigation (PFMI) and the In-Space Soldering Investigation (ISSI). The capabilities of these facilities are briefly discussed and then demonstrated by presenting real-time and subsequently down-linked video-taped examples from the abovementioned experiments. Data interpretation, ISS telescience, some lessons learned, and the need of such facilities for conducting work in support of understanding materials behavior, particularly fluid processing and transport scenarios, in low-gravity environments is discussed.

The influence of formative assessments on student motivation, achievement, and conceptual change

NASA Astrophysics Data System (ADS)

Yin, Yue

2005-07-01

This study connected research on formative assessment, motivation, and conceptual change. In particular, it examined three research questions: (1) Can formative assessment improve students' motivational beliefs? (2) Can formative assessment improve students' achievement in science and bring about conceptual change? and (3) Are students' science achievement and conceptual change correlated with their motivational beliefs? Formative assessment in this study refers to assessments embedded in an inquiry-based curriculum. To answer those questions, a randomized experiment was conducted. One thousand and two 6th or 7th graders of 12 teachers in 12 different schools in six states participated in the study. The 12 teachers were matched in pairs and randomly assigned to the experimental and control group. The experimental group employed embedded formative assessments while teaching a science curriculum unit and the control group taught the same unit without formative assessments. All the students were given a motivation survey and one or more achievement tests at pre- and posttest. By comparing the experimental and control students' motivation and achievement scores at pretest and posttest, I examined whether the formative assessment treatment affected students' motivation, learning, and conceptual change. By correlating students' posttest motivation, achievement as well as conceptual change scores, I examined whether students' motivation was related to their achievement and conceptual change. Analyses indicated that, the embedded assessments used by the experimental group did not significantly influence students' motivation, achievement, or conceptual change compared to students in the control group. Most motivation beliefs were correlated with students' achievement in a way similar to what has been reported in the literature. They were not correlated with students' conceptual change scores as hypothesized. Teachers, as well as some contextual factors associated with teachers, were extremely influential on students' motivation, achievement, and conceptual change; teacher effects overshadowed the treatment effect. This study revealed many of the challenges and problems teachers, researchers and randomized experiments are likely to encounter. It also highlighted the difficulty and importance of high-fidelity formative assessment implementation. Finally, it suggested that a cognitive approach in studying conceptual change still has great value to further research.

The effectiveness of formative assessment with understanding by design (UbD) stages in forming habits of mind in prospective teachers

NASA Astrophysics Data System (ADS)

Gloria, R. Y.; Sudarmin, S.; Wiyanto; Indriyanti, D. R.

2018-03-01

Habits of mind are intelligent thinking dispositions that every individual needs to have, and it needs an effort to form them as expected. A behavior can be formed by continuous practice; therefore the student's habits of mind can also be formed and trained. One effort that can be used to encourage the formation of habits of mind is a formative assessment strategy with the stages of UbD (Understanding by Design), and a study needs to be done to prove it. This study aims to determine the contribution of formative assessment to the value of habits of mind owned by prospective teachers. The method used is a quantitative method with a quasi-experimental design. To determine the effectiveness of formative assessment with Ubd stages on the formation of habits of mind, correlation test and regression analysis were conducted in the formative assessment questionnaire consisting of three components, i.e. feed back, peer assessment and self assessment, and habits of mind. The result of the research shows that from the three components of Formative Assessment, only Feedback component does not show correlation to students’ habits of mind (r = 0.323). While peer assessment component (r = 0. 732) and self assessment component (r = 0.625), both indicate correlation. From the regression test the overall component of the formative assessment contributed to the habits of mind at 57.1%. From the result of the research, it can be concluded that the formative assessment with Ubd stages is effective and contributes in forming the student's habits of mind; the formative assessment components that contributed the most are the peer assessment and self assessment. The greatest contribution goes to the Thinking interdependently category.

An Experimental Study of Group Size and Participants' Role in Developmental Testing.

ERIC Educational Resources Information Center

Burt, Charles W.

The research in progress that is presented in this paper focuses on the preliminary results of a study examining the differences and similarities in data obtained using the one-to-one versus small group procedures for designing and conducting formative evaluations of instructional materials. The materials chosen were the microbiology print module…

Preparing Principals to Raise Student Achievement: Implementation and Effects of the New Leaders Program in Ten Districts. Appendix

ERIC Educational Resources Information Center

Gates, Susan M.; Hamilton, Laura S.; Martorell, Paco; Burkhauser, Susan; Heaton, Paul; Pierson, Ashley; Baird, Matthew; Vuollo, Mirka; Li, Jennifer J.; Lavery, Diana Catherine; Harvey, Melody; Gu, Kun

2014-01-01

New Leaders is dedicated to promoting student achievement by developing outstanding school leaders to serve in urban schools. RAND Corporation researchers conducted a formative and summative external evaluation of the New Leaders program, its theory of action, and its implementation from 2006 through 2013. This document presents technical…

Don't Tell It Like It Is: Preserving Collegiality in the Summative Peer Review of Teaching

ERIC Educational Resources Information Center

Iqbal, Isabeau A.

2014-01-01

While much literature has considered feedback and professional growth in formative peer reviews of teaching, there has been little empirical research conducted on these issues in the context of summative peer reviews. This article explores faculty members' perceptions of feedback practices in the summative peer review of teaching and reports on…

Formative Research on Creating Smoke-free Homes in Rural Communities

ERIC Educational Resources Information Center

Escoffery, Cam; Kegler, Michelle Crozier; Butler, Susan

2009-01-01

The home is a significant place for exposure to secondhand smoke for children and non-smoking adults. This study explored factors that would convince families to adopt household smoking bans and actions to create and maintain smoke-free homes. Interviews were conducted with adults in 102 households in rural Georgia. Participating families had a…

A Pilot Study of an Online Workplace Nutrition Program: The Value of Participant Input in Program Development

ERIC Educational Resources Information Center

Cousineau, Tara; Houle, Brian; Bromberg, Jonas; Fernandez, Kathrine C.; Kling, Whitney C.

2008-01-01

Objective: Tailored nutrition Web programs constitute an emerging trend in obesity prevention. Initial investment in innovative technology necessitates that the target population be well understood. This pilot study's purpose was to determine the feasibility of a workplace nutrition Web program. Design: Formative research was conducted with gaming…

Designing Online Software for Teaching the Concept of Variable That Facilitates Mental Interaction with the Material: Systemic Approach

ERIC Educational Resources Information Center

Koehler, Natalya A.; Thompson, Ann D.; Correia, Ana-Paula; Hagedorn, Linda Serra

2015-01-01

Our case study is a response to the need for research and reporting on specific strategies employed by software designers to produce effective multimedia instructional solutions. A systemic approach for identifying appropriate software features and conducting a formative evaluation that evaluates both the overall effectiveness of the multimedia…

Modern Languages and Distance Education: Thirteen Days in the Cloud

ERIC Educational Resources Information Center

Dona, Elfe; Stover, Sheri; Broughton, Nancy

2014-01-01

This research study documents the journey of two modern language faculty (Spanish and German) from their original beliefs that teaching foreign languages can only be conducted in a face-to-face format to their eventual development of an online class using Web 2.0 technologies to encourage their students' active skills of reading and speaking in…

Do Differing Types of Field Experiences Make a Difference in Teacher Candidates' Perceived Level of Competence?

ERIC Educational Resources Information Center

Caprano, Mary Margaret; Caprano, Robert M.; Helfeldt, Jack

2010-01-01

Little research has been conducted to directly compare the effectiveness of different models of field-based learning experiences and little has been reported on the use of the Interstate New Teacher Assessment and Support Consortium (INTASC) standards in establishing a formative assessment for teacher candidates (TCs). The current study used the…

Student Motives for Taking Online Courses in Educational Administration

ERIC Educational Resources Information Center

Kowalski, Theodore J.; Dolph, David; Young, I. Phillip

2014-01-01

This study was conducted with students enrolled in a master's degree program in educational administration at a private research university that offered all required courses in both online and in-class formats. The purposes were to determine (a) the extent to which online courses were selected, (b) the level of importance students placed on four…

Blended Learning: How Teachers Balance the Blend of Online and Classroom Components

ERIC Educational Resources Information Center

Jeffrey, Lynn M.; Milne, John; Suddaby, Gordon

2014-01-01

Despite teacher resistance to the use of technology in education, blended learning has increased rapidly, driven by evidence of its advantages over either online or classroom teaching alone. However, blended learning courses still fail to maximize the benefits this format offers. Much research has been conducted on various aspects of this problem,…

[Biological etiologies of transsexualism].

PubMed

Butty, Anne-Virginie; Bianchi-Demicheli, Francesco

2016-03-16

Transsexualism or gender dysphoria is a disorder of sexual identity of unknown etiology. At the biological level, one assumes atypical brain development during certain periods of its formation (genesis) notably during embryogenesis, as a result of altered hormonal influence and a particular genetic polymorphism. This article summarizes the research conducted to date in these three areas only, excluding psycho-social and environmental factors.

The Effectiveness of Using Interactive Multimedia in Improving the Concept of Fashion Design and Its Application in The Making of Digital Fashion Design

NASA Astrophysics Data System (ADS)

Wiana, W.

2018-02-01

This research is related to the effort to design a more representative learning system to improve the learning result of digital fashion design, through the development of interactive multimedia based on motion graphic. This research is aimed to know the effect of interactive multimedia application based on motion graphic to increase the mastery of the concept and skill of the students to making fashion designing in digital format. The research method used is quasi experiment with research design of Non-equivalent Control Group Design. The lectures are conducted in two different classes, namely class A as the Experimental Class and class B as the Control Class. From the calculation result after interpreted using Normalize Gain, there is an increase of higher learning result in student with interactive learning based on motion graphic, compared with student achievement on conventional learning. In this research, interactive multimedia learning based on motion graphic is effective toward the improvement of student learning in concept mastering indicator and on the aspect of making fashion design in digital format.

A review of the Journal of Pediatrics: the first 75 years.

PubMed

Hellems, Martha A; Gurka, Kelly K; Hayden, Gregory F

2009-07-01

To assess changes in the format and content of articles published in The Journal of Pediatrics to aid in understanding the current state of pediatric research and to anticipate what to expect in the coming years. We conducted a retrospective review of case reports, research articles, and review articles published in volume 150 of The Journal. We noted components of study authorship, content, and design and compared these data with those in earlier volumes. The numbers of authors and grants per article and the proportion of studies with international authorship have all increased. Print circulation has dropped, but The Journal is now available in electronic format. Research topics shifted, with fewer articles devoted to infectious disease and general pediatrics. An increase in articles about endocrinology reflects a surge of interest in pediatric obesity. Most articles contain original research, reporting analyses from observational studies with few clinical trials. Recent trends suggest that readers of The Journal should expect more research articles with observational designs and increasing international authorship. The Journal's electronic presence will likely increase and provide greater readership globally.

Strengthening health services to deliver nutrition education to promote complementary feeding and healthy growth of infants and young children: formative research for a successful intervention in peri-urban Trujillo, Peru.

PubMed

Robert, Rebecca C; Creed-Kanashiro, Hilary M; Villasante, Ruben; Narro, M Rocio; Penny, Mary E

2017-04-01

Formative research is critical for developing effective nutrition-specific interventions to improve infant and young child (IYC) feeding practices and promote healthy growth. Health workers interact with caregivers during health facility visits, yet there is limited research about how to optimize delivery of such interventions during these visits. The extensive reach of IYC health services globally calls for research to address this gap. In Trujillo, Peru, formative research was conducted to explore complementary feeding practices with caregivers as well as health worker routines and interactions with caregivers related to feeding and healthy growth; results informed the development and delivery of an educational intervention. Multiple qualitative methods were used to collect data on a purposive sample of health workers and caregivers from three health facilities and communities: household trials followed. Complementary feeding messages with doable behaviours were developed, and three were selected as key to promote based on their nutritional impact and cultural acceptability. In the health facilities, medical consultation, well-child visits and nutrition consultation all dealt with aspects of IYC nutrition/growth during their interactions with caregivers but were independent and inconsistent in approach. A nutrition education strategy was developed based on consistency, quality and coverage in the IYC health services. We conclude that formative research undertaken in the community and IYC health services was critical to developing a successful and culturally relevant intervention to promote optimal complementary feeding practices and healthy growth during interactions between health workers and caregivers at routine health facility visits. © 2016 John Wiley & Sons Ltd. © 2016 John Wiley & Sons Ltd.

Induced polarization of volcanic rocks - 1. Surface versus quadrature conductivity

NASA Astrophysics Data System (ADS)

Revil, A.; Le Breton, M.; Niu, Q.; Wallin, E.; Haskins, E.; Thomas, D. M.

2017-02-01

We performed complex conductivity measurements on 28 core samples from the hole drilled for the Humu'ula Groundwater Research Project (Hawai'i Island, HI, USA). The complex conductivity measurements were performed at 4 different pore water conductivities (0.07, 0.5, 1.0 or 2.0, and 10 S m-1 prepared with NaCl) over the frequency range 1 mHz to 45 kHz at 22 ± 1 °C. The in-phase conductivity data are plotted against the pore water conductivity to determine, sample by sample, the intrinsic formation factor and the surface conductivity. The intrinsic formation factor is related to porosity by Archie's law with an average value of the cementation exponent m of 2.45, indicating that only a small fraction of the connected pore space controls the transport properties. Both the surface and quadrature conductivities are found to be linearly related to the cation exchange capacity of the material, which was measured with the cobalt hexamine chloride method. Surface and quadrature conductivities are found to be proportional to each other like for sedimentary siliclastic rocks. A Stern layer polarization model is used to explain these experimental results. Despite the fact that the samples contain some magnetite (up to 5 per cent wt.), we were not able to identify the effect of this mineral on the complex conductivity spectra. These results are very encouraging in showing that galvanometric induced polarization measurements can be used in volcanic areas to separate the bulk from the surface conductivity and therefore to define some alteration attributes. Such a goal cannot be achieved with resistivity alone.

Evaluation of Droplet Splashing Algorithm in LEWICE 3.0

NASA Technical Reports Server (NTRS)

Homenko, Hilary N.

2004-01-01

The Icing Branch at NASA Glenn Research has developed a computer program to simulate ice formation on the leading edge of an aircraft wing during flight through cold, moist air. As part of the branch's current research, members have developed software known as LEWICE. This program is capable of predicting the formation of ice under designated weather conditions. The success of LEWICE is an asset to airplane manufacturers, ice protection system manufacturers, and the airline industry. Simulations of ice formation conducted in the tunnel and in flight is costly and time consuming. However, the danger of in-flight icing continues to be a concern for both commercial and military pilots. The LEWICE software is a step towards inexpensive and time efficient prediction of ice collection. In the most recent version of the program, LEWICE contains an algorithm for droplet splashing. Droplet splashing is a natural occurrence that causes accumulation of ice on aircraft surfaces. At impingement water droplets lose a portion of their mass to splashing. With part of each droplet joining the airflow and failing to freeze, early versions of LEWICE without the splashing algorithm over-predicted the collection of ice on the leading edge. The objective of my project was to determine whether the revised version of LEWICE accurately reflected the ice collection data obtained from the Icing Research Tunnel (IRT). The experimental data from the IRT was collected by Mark Potapczuk in January, March and July of 2001 and April and December of 2002. Experimental data points were the result of ice tracings conducted shortly after testing in the tunnel. Run sheets, which included a record of velocity, temperature, liquid water content and droplet diameter, served as the input of the LEWICE computer program. Parameters identical to the tunnel conditions were used to run LEWICE 2.0 and LEWICE 3.0. The results from IRT and versions of LEWICE were compared graphically. After entering the raw experimental data and computer output into a spread sheet, I mapped each ice formation onto a clean airfoil. The LEWICE output provided the data points to graphically depict ice formations developed by the program. weather conditions of runs conducted in January 2001, it was evident that the splashing algorithm of LEWICE 3.0 predicts ice formations more accurately than LEWICE 2.0. Especially at conditions with droplet size between 80 and 160 microns, the splashing algorithm of the new LEWICE version compensated for the loss of droplet mass as a result of splashing. In contrast, LEWICE 2.0 consistently over-predicted the mass of the ice in conditions with droplet size exceeding 80 microns. This evidence confirms that changes made to algorithms of LEWICE 3.0 have increased the accuracy of predicting ice collection.

Attitude symbology issues for helmet-mounted displays

NASA Astrophysics Data System (ADS)

Davy, Eleanor C.; Dudfield, Helen J.; Hardiman, Thomas D.; Doyle, Anthony J. R.

1996-06-01

One of the major advantages of HMDs is the display of information wherever the pilot is looking. These displays, however, raise important human factor issues for the optimal method of presenting attitude information. For example, problems may occur when the pilot looks off- boresight and is provided with information that is based upon the forward view of the aircraft (i.e. aircraft-referenced) and is thus incongruent. An experiment was conducted to examine this issue in which a traditional pitch ladder format was compared against the novel 'cylinder' format in an off-boresight attitude control task on a simulated HMD. This task involved recovery from unusual positions (UPs) which were presented at various off-boresight angles. Subjects' initial response times were faster for the pitch ladder format than for the two formats for total recovery times, error rates, height deviations, situational awareness rating technique or the questionnaire data. It was concluded that the performance on the cylinder format may be explained by the subjects' past experience using the pitch ladder or by the lack of information available when the aircraft was slightly nose-up or nose-down. It was suggested that improvements should be made to the cylinder if it is to be further examined in future research. Finally, the implications of this research for future work are discussed.

Compendium of NASA Data Base for the Global Tropospheric Experiment's Pacific Exploratory Mission - Tropics B (PEM-Tropics B). Volume 2; P-3B

NASA Technical Reports Server (NTRS)

Scott, A. Donald, Jr.; Kleb, Mary M.; Raper, James L.

2000-01-01

This report provides a compendium of NASA aircraft data that are available from NASA's Global Tropospheric Experiment's (GTE) Pacific Exploratory Mission-Tropics B (PEM-Tropics B) conducted in March and April 1999. PEM-Tropics B was conducted during the southern-tropical wet season when the influence from biomass burning observed in PEM-Tropics A was minimal. Major deployment sites were Hawaii, Kiritimati (Christmas Island), Tahiti, Fiji, and Easter Island. The broad goals of PEM-Tropics B were to improved understanding of the oxidizing power of the atmosphere and the processes controlling sulfur aerosol formation and to establish baseline values for chemical species that are directly coupled to the oxidizing power and aerosol loading of the troposphere. The purpose of this document is to provide a representation of aircraft data that will be available in archived format via NASA Langley's Distributed Active Archive Center (DAAC) or are available through the GTE Project Office archive. The data format is not intended to support original research/analysis, but to assist the reader in identifying data that are of interest.

Compendium of NASA Data Base for the Global Tropospheric Experiment's Pacific Exploratory Mission-Tropics B (PEM-Tropics B). Volume 1; DC-8

NASA Technical Reports Server (NTRS)

Scott, A. Donald, Jr.; Kleb, Mary M.; Raper, James L.

2000-01-01

This report provides a compendium of NASA aircraft data that are available from NASA's Global Tropospheric Experiment's (GTE) Pacific Exploratory Mission-Tropics B (PEM-Tropics B) conducted in March and April 1999. PEM-Tropics B was conducted during the southern-tropical wet season when the influence from biomass burning observed in PEM-Tropics A was minimal. Major deployment sites were Hawaii, Kiritimati (Christmas Island), Tahiti, Fiji, and Easter Island. The broad goals of PEM-Tropics B were to improved understanding of the oxidizing power of the atmosphere and the processes controlling sulfur aerosol formation and to establish baseline values for chemical species that are directly coupled to the oxidizing power and aerosol loading of the troposphere. The purpose of this document is to provide a representation of aircraft data that will be available in archived format via NASA Langley's Distributed Active Archive Center (DAAC) or are available through the GTE Project Office archive. The data format is not intended to support original research/analysis, but to assist the reader in identifying data that are of interest.

Formation of controllable polymer micropatterns through liquid film electro-dewetting

NASA Astrophysics Data System (ADS)

Zhou, Shangru; Zheng, Huai; Li, Guoliang; Liu, Jie; Liu, Sheng

2018-04-01

Controllable polymer micropatterns, served as indispensable function structures, are extensively required in many micro/nano scientific areas and engineering applications. Exploring advanced methods of fabricating micropatterns is always a research hotspot. In this article, we introduce a novel method of patterning polymer by the electro-dewetting induced by corona discharge. For the first time, it is observed experimentally that liquid polymer on conductive/non-conductive patterned substrates, spontaneously converges from non-conductive areas to conductive areas under the action of ion wind. Taking advantage of such a flow phenomenon, controllable polymer micropatterns including microbump arrays and microwell arrays are fabricated successfully. Their sizes range from hundreds of microns to millimeters. Micropattern surfaces present an ultra-smooth characteristic, with roughness in the nanometer range.

Using theory and formative research to design interventions to improve community health worker motivation, retention and performance in Mozambique and Uganda.

PubMed

Strachan, Daniel Llywelyn; Källander, Karin; Nakirunda, Maureen; Ndima, Sozinho; Muiambo, Abel; Hill, Zelee

2015-04-30

Community health workers (CHWs) are increasingly being used in low-income countries to address human resources shortages, yet there remain few effective, evidence-based strategies for addressing the enduring programmatic constraints of worker motivation, retention and performance. This paper describes how two interventions were designed by the Innovations at Scale for Community Access and Lasting Effects (inSCALE) project to address these constraints in Uganda and Mozambique drawing on behavioural theory and formative research results. A review of the work motivation and CHW motivation literature--incorporating influences on retention and performance--was conducted on articles sourced through electronic web searches. Formative research with a focus on the barriers and facilitators to CHW motivation, retention and performance was conducted with community health workers and key stakeholders in Uganda and Mozambique. An analytical induction approach to the thematic analysis of transcripts from 98 in-depth interviews and 26 focus group discussions was adopted across the country settings. From the theoretical review, it was determined that the interventions should promote CHWs as members of a collective by highlighting a sense of shared experience, focus on alignment between worker and programme goals, and emphasise the actions that lead to good performance. The Social Identity Approach was selected as the theory most likely to lead to the development of effective, scalable and sustainable interventions by addressing the identified gap in the literature of the influence of CHW working context. The formative research indicated that CHWs value feedback and feeling connected to the health system and their community, are motivated by status and community standing, and want to be provided with the necessary tools to perform. Two interventions based on these results were developed: a participatory, local community approach and an information communication technology (ICT) approach. Drawing on contextual data and theory that is sensitive to context can potentially lead to the development of appropriate and effective interventions when aiming to improve the motivation, retention and performance of CHWs in Uganda and Mozambique and other comparable settings. Evaluation of the developed interventions is crucial to assess this potential.

Social media as an information system: improving the technological agility

NASA Astrophysics Data System (ADS)

Senadheera, Vindaya; Warren, Matthew; Leitch, Shona

2017-04-01

There is an increased focus on research involving social media. This research however has failed to catch up with the pace of the technology development and may prove disadvantageous for both practice and theory. The longitudinal study presented in the paper was conducted over a 3-year period involving Australian banks and popular social media technologies. The paper empirically tests the Honeycomb model as a tool that enhances the technological agility of social media. The paper fills a key research gap and provides dynamism to social media strategy formation, continuous improvement of strategy development in support of greater business agility.

An overview of the fundamental aerodynamics branch's research activities in wing leading-edge vortex flows at supersonic speeds

NASA Technical Reports Server (NTRS)

Miller, D. S.; Wood, R. M.; Covell, P. F.

1986-01-01

For the past 3 years, a research program pertaining to the study of wing leading edge vortices at supersonic speeds has been conducted in the Fundamental Aerodynamics Branch of the High-Speed Aerodynamics Division at the Langley Research Center. The purpose of the research is to provide an understanding of the factors governing the formation and the control of wing leading-edge vortices and to evaluate the use of these vortices for improving supersonic aerodynamic performance. The studies include both experimental and theoretical investigations and focus primarily on planform, thickness and camber effects for delta wings. An overview of this research activity is presented.

Multifractality analysis of crack images from indirect thermal drying of thin-film dewatered sludge

NASA Astrophysics Data System (ADS)

Wang, Weiyun; Li, Aimin; Zhang, Xiaomin; Yin, Yulei

2011-07-01

Crack formation is inevitable during sludge drying because of the existence of uneven thermal stress. Experiments have been conducted to study crack pattern formation in thin film sludge. Crack images show that the thinner the sewage sludge film, the more even the crack distribution. The crack changes from a flaky texture to a banded structure with increasing thickness. Multifractal methods are proposed to analyze the crack image of four different thicknesses of dried sludge. Several parameters are conducted for quantification of the crack image and the results indicate that the width of spectra increases with thicker sludge film, that is to say, nonunifromity of crack distribution increases with increasing thickness, which proves that the multifractal method is sensitive enough to quantify the crack distribution and can be seen as a new approach for the changing research of crack images of sewage sludge drying.

Building research capacity with members of underserved American Indian/Alaskan Native communities: training in research ethics and the protection of human subjects.

PubMed

Jetter, Karen M; Yarborough, Mark; Cassady, Diana L; Styne, Dennis M

2015-05-01

To develop a research ethics training course for American Indian/Alaskan Native health clinic staff and community researchers who would be conducting human subjects research. Community-based participatory research methods were used in facilitated discussions of research ethics centered around topics included in the Collaborative Institutional Training Initiative research ethics course. The community-based participatory research approach allowed all partners to jointly develop a research ethics training program that was relevant for American Indian/Alaskan Native communities. All community and clinic partners were able to pass the Collaborative Institutional Training Initiative course they were required to pass so that they could be certified to conduct research with human subjects on federally funded projects. In addition, the training sessions provided a foundation for increased community oversight of research. By using a collaborative process to engage community partners in research ethics discussions, rather than either an asynchronous online or a lecture/presentation format, resulted in significant mutual learning about research ethics and community concerns about research. This approach requires university researchers to invest time in learning about the communities in which they will be working prior to the training. © 2014 Society for Public Health Education.

NASA Dryden's two T-38A mission support aircraft fly in tight formation while conducting a pitot-static airspeed calibration check near Edwards Air Force Base

NASA Image and Video Library

2007-09-26

NASA Dryden Flight Research Center's two T-38A Talon mission support aircraft flew together for the first time on Sept. 26, 2007 while conducting pitot-static airspeed calibration checks during routine pilot proficiency flights. The two aircraft, flown by NASA research pilots Kelly Latimer and Frank Batteas, joined up with a NASA Dryden F/A-18 flown by NASA research pilot Dick Ewers to fly the airspeed calibrations at several speeds and altitudes that would be flown by the Stratospheric Observatory for Infrared Astronomy (SOFIA) Boeing 747SP during its initial flight test phase. The T-38s, along with F/A-18s, serve in a safety chase role during those test missions, providing critical instrument and visual monitoring for the flight test series.

NASA gateway requirements analysis

NASA Technical Reports Server (NTRS)

Duncan, Denise R.; Doby, John S.; Shockley, Cynthia W.

1991-01-01

NASA devotes approximately 40 percent of its budget to R&D. Twelve NASA Research Centers and their contractors conduct this R&D, which ranges across many disciplines and is fueled by information about previous endeavors. Locating the right information is crucial. While NASA researchers use peer contacts as their primary source of scientific and technical information (STI), on-line bibliographic data bases - both Government-owned and commercial - are also frequently consulted. Once identified, the STI must be delivered in a usable format. This report assesses the appropriateness of developing an intelligent gateway interface for the NASA R&D community as a means of obtaining improved access to relevant STI resources outside of NASA's Remote Console (RECON) on-line bibliographic database. A study was conducted to determine (1) the information requirements of the R&D community, (2) the information sources to meet those requirements, and (3) ways of facilitating access to those information sources. Findings indicate that NASA researchers need more comprehensive STI coverage of disciplines not now represented in the RECON database. This augmented subject coverage should preferably be provided by both domestic and foreign STI sources. It was also found that NASA researchers frequently request rapid delivery of STI, in its original format. Finally, it was found that researchers need a better system for alerting them to recent developments in their areas of interest. A gateway that provides access to domestic and international information sources can also solve several shortcomings in the present STI delivery system. NASA should further test the practicality of a gateway as a mechanism for improved STI access.

Working toward the De-Essentialization of Identity Categories in Conflict and Postconflict Societies: Israel, Cyprus, and Northern Ireland

ERIC Educational Resources Information Center

Bekerman, Zvi; Zembylas, Michalinos; McGlynn, Claire

2009-01-01

During the past decade, the authors have conducted research in their own countries, all of which are considered conflict or postconflict societies: Israel, Cyprus, and Northern Ireland. They have focused on a variety of topics related to peace education, reconciliation, and coexistence. Giving special emphasis to the formation of identity in…

Mutations des roles techniques et formation. Etude documentaire (Changes in the Roles and Education of Technicians. Documentary Study).

ERIC Educational Resources Information Center

Pinard, Helene

Drawing from research conducted in 1990-91, this report examines trends affecting the future work of technicians in Quebec, their pre-employment education, and the link between college and work. Part 1 focuses on aspects of the economic, technological, and social environment that will influence the future role of technicians. Economic concerns…

Does the Method of Instruction Matter? An Experimental Examination of Information Literacy Instruction in the Online, Blended, and Face-to-Face Classrooms

ERIC Educational Resources Information Center

Anderson, Karen; May, Frances A.

2010-01-01

The researchers, a librarian and a faculty member, collaborated to investigate the effectiveness of delivery methods in information literacy instruction. The authors conducted a field experiment to explore how face-to-face, online, and blended learning instructional formats influenced students' retention of information literacy skills. Results are…

Understanding School Health Environment through Interviews with Key Stakeholders in Lao PDR, Mongolia, Nepal and Sri Lanka

ERIC Educational Resources Information Center

Park, Sohyun; Lee, Eun Young; Gittelsohn, Joel; Nkala, Denis; Choi, Bo Youl

2015-01-01

Studies on health promoting schools (HPS) in low- and middle-income countries (LMICs) are scarce. To contribute to the development of HPS in these countries, we conducted formative research to understand the school environment in Lao PDR, Mongolia, Nepal, and Sri Lanka. Forty-three teachers, 10 government workers and 5 parents participated in…

Silent Partners: Uncovering Middle School and High School Students' Perceptions of Their Roles in Two School-University Partnerships

ERIC Educational Resources Information Center

Kruse, Nathan B.

2012-01-01

The purpose of this study was to explore middle school and high school band students' perceptions of two ongoing school-university partnerships. Interviews and focus group interviews were conducted with school students to capture their unique perspectives and to support the tenets of formative and action research designs. Findings indicated that…

Formative Assessment Practices in Reading Instruction in Pre-Service Teachers' Elementary School Classrooms

ERIC Educational Resources Information Center

Luttenegger, Kathleen Carroll

2009-01-01

In this article, the author describes a project wherein she conducted a qualitative case study of four elementary student teachers from a large, research university in the Rocky Mountain Region, USA. The student teachers were in a traditional teacher education programme in which they took a series of courses followed by 16 weeks of student…

OXIDATION OF ALKANES WITH AIR USING IRON AND MANGANESE CATALYSTS. AN OVERALL GREEN CHEMISTRY APPROACH INCLUDING THE USE OF ALTERNATIVE SOLVENT SYSTEMS GENERATED BY PARIS II

EPA Science Inventory

The selective oxidation of alkanes is an industrially important process that is often plagued by low conversions and the formation of unwanted by-products. Research being conducted at the USEPA, implements a Green chemistry approach which is utilized to improve these difficult o...

In Search of an Ethical Imperative: Exploring Medicine's Standard of Care as a Concept for Higher Education.

ERIC Educational Resources Information Center

Rice, Daniel R.

2002-01-01

Argues that medicine's standard of conduct can be applied to the formation of ethical standards for practices and policies in higher education. Offers sources for developing a standard of care for college students based on the body of research on traditional-age undergraduate students. Compares medicine's "tele-medicine" with higher education's…

Avoiding a knowledge gap in a multiethnic statewide social marketing campaign: is cultural tailoring sufficient?

PubMed

Buchthal, O Vanessa; Doff, Amy L; Hsu, Laura A; Silbanuz, Alice; Heinrich, Katie M; Maddock, Jay E

2011-03-01

In 2007, the State of Hawaii, Healthy Hawaii Initiative conducted a statewide social-marketing campaign promoting increased physical activity and nutrition. The campaign included substantial formative research to develop messages tailored for Hawaii's multiethnic Asian and Pacific Islander populations. The authors conducted a statewide random digital dialing telephone survey to assess the campaign's comparative reach among individuals with different ethnicities and different levels of education and income. This analysis suggests that the intervention was successful in reaching its target ethnic audiences. However, a knowledge gap related to the campaign appeared among individuals with incomes less than 130% of the poverty level and those with less than a high school education. These results varied significantly by message and the communication channel used. Recall of supermarket-based messages was significantly higher among individuals below 130% of the poverty level and those between 18 and 35 years of age, 2 groups that showed consistently lower recall of messages in other channels. Results suggest that cultural tailoring for ethnic audiences, although important, is insufficient for reaching low-income populations, and that broad-based social marketing campaigns should consider addressing socioeconomic status-related channel preferences in formative research and campaign design.

Practical use of a framework for network science experimentation

NASA Astrophysics Data System (ADS)

Toth, Andrew; Bergamaschi, Flavio

2014-06-01

In 2006, the US Army Research Laboratory (ARL) and the UK Ministry of Defence (MoD) established a collaborative research alliance with academia and industry, called the International Technology Alliance (ITA)1 In Network and Information Sciences, to address fundamental issues concerning Network and Information Sciences that will enhance decision making for coalition operations and enable rapid, secure formation of ad hoc teams in coalition environments and enhance US and UK capabilities to conduct coalition warfare. Research conducted under the ITA was extended through collaboration between ARL and IBM UK to characterize and dene a software stack and tooling that has become the reference framework for network science experimentation in support for validation of theoretical research. This paper discusses the composition of the reference framework for experimentation resulting from the ARL/IBM UK collaboration and its use, by the Network Science Collaborative Technology Alliance (NS CTA)2 , in a recent network science experiment conducted at ARL. It also discusses how the experiment was modeled using the reference framework, the integration of two new components, the Apollo Fact-Finder3 tool and the Medusa Crowd Sensing4 application, the limitations identified and how they shall be addressed in future work.

African Primary Care Research: writing a research report.

PubMed

Couper, Ian; Mash, Bob

2014-06-06

Presenting a research report is an important way of demonstrating one's ability to conduct research and is a requirement of most research-based degrees. Although known by various names across academic institutions, the structure required is mostly very similar, being based on the Introduction, Methods, Results, Discussion format of scientific articles.This article offers some guidance on the process of writing, aimed at helping readers to start and to continue their writing; and to assist them in presenting a report that is received positively by their readers, including examiners. It also details the typical components of the research report, providing some guidelines for each, as well as the pitfalls to avoid.This article is part of a series on African Primary Care Research that aims to build capacity for research particularly at a Master's level.

Therapeutic options to treat sulfur mustard poisoning--the road ahead.

PubMed

Smith, William J

2009-09-01

For the past 15 years the international research community has conducted a basic and applied research program aimed at identifying a medical countermeasure against chemical threat vesicant, or blistering, agents. The primary emphasis of this program has been the development of therapeutic protection against sulfur mustard and its cutaneous pathology-blister formation. In addition to the work on a medical countermeasures, significant research has been conducted on the development of topical skin protectants and medical strategies for wound healing. This review will focus on the pharmacological strategies investigated, novel therapeutic targets currently under investigation and therapeutic approaches being considered for transition to advanced development. Additionally, we will review the expansion of our understanding of the pathophysiological mechanisms of mustard injury that has come from this research. While great strides have been made through these investigations, the complexity of the mustard insult demands that further studies extend the inroads made and point the way toward better understanding of cellular and tissue disruptions caused by sulfur mustard.

Bioelectronic platforms for optimal bio-anode of bio-electrochemical systems: From nano- to macro scopes.

PubMed

Kim, Bongkyu; An, Junyeong; Fapyane, Deby; Chang, In Seop

2015-11-01

The current trend of bio-electrochemical systems is to improve strategies related to their applicability and potential for scaling-up. To date, literature has suggested strategies, but the proposal of correlations between each research field remains insufficient. This review paper provides a correlation based on platform techniques, referred to as bio-electronics platforms (BEPs). These BEPs consist of three platforms divided by scope scale: nano-, micro-, and macro-BEPs. In the nano-BEP, several types of electron transfer mechanisms used by electrochemically active bacteria are discussed. In the micro-BEP, factors affecting the formation of conductive biofilms and transport of electrons in the conductive biofilm are investigated. In the macro-BEP, electrodes and separators in bio-anode are debated in terms of real applications, and a scale-up strategy is discussed. Overall, the challenges of each BEP are highlighted, and potential solutions are suggested. In addition, future research directions are provided and research ideas proposed to develop research interest. Copyright © 2015 Elsevier Ltd. All rights reserved.

Using Reflective Writing as a Predictor of Academic Success in Different Assessment Formats.

PubMed

Tsingos-Lucas, Cherie; Bosnic-Anticevich, Sinthia; Schneider, Carl R; Smith, Lorraine

2017-02-25

Objectives. To investigate whether reflective-writing skills are associated with academic success. Methods. Two hundred sixty-four students enrolled in a pharmacy practice course completed reflective statements. Regression procedures were conducted to determine whether reflective-writing skills were associated with academic success in different assessment formats: written, oral, and video tasks. Results. Reflective-writing skills were found to be a predictor of academic performance in some formats of assessment: written examination; oral assessment task and overall score for the Unit of Study (UoS). Reflective writing skills were not found to predict academic success in the video assessment task. Conclusions. Possessing good reflective-writing skills was associated with improved academic performance. Further research is recommended investigating the impact of reflective skill development on academic performance measures in other health education.

An adaptive CBPR approach to create weight management materials for a school-based health center intervention.

PubMed

Sussman, Andrew L; Montoya, Carolyn; Werder, Olaf; Davis, Sally; Wallerstein, Nina; Kong, Alberta S

2013-01-01

From our previous clinical work with overweight/obese youth, we identified the need for research to create an effective weight management intervention to address the growing prevalence of adolescent metabolic syndrome. Formative assessment through an adaptive community-based participatory research (CBPR) approach was conducted toward the development of a nutritional and physical activity (DVD) and clinician toolkit for a school-based health center (SBHC) weight management intervention. We first conducted parent and adolescent interviews on views and experiences about obesity while convening a community advisory council (CAC) recruited from two participating urban New Mexico high schools. Thematic findings from the interviews were analyzed with the CAC to develop culturally and developmentally appropriate intervention materials. Themes from the parent and adolescent interviews included general barriers/challenges, factors influencing motivation, and change facilitators. The CAC and university-based research team reached consensus on the final content of nutrition and physical activity topics to produce a DVD and clinician toolkit through six monthly sessions. These materials used in the SBHC intervention resulted in a greater reduction of body mass index when compared to adolescents receiving standard care. Formative assessment using an adaptive CBPR approach resulted in the creation of culturally and age appropriate weight reduction materials that were acceptable to study participants. This trial is registered with ClinicalTrials.gov NCT00841334.

A campaign to convey the scientific consensus about human-caused climate change: rationale, formative research, and campaign overview. (Invited)

NASA Astrophysics Data System (ADS)

Maibach, E.; Leiserowitz, A.; Gould, R.

2013-12-01

Large numbers of Americans mistakenly believe that there is disagreement among the experts about the reality of climate change. For example, in our nationally representative survey conducted in April 2013, only 42% of respondents reported 'most scientists think global warming is happening;' conversely, 33% reported 'there is a lot of disagreement among scientists about whether or not global warming is happening,' and an additional 20% responded they 'don't know enough to say.' Our research has also shown that this common misperception is highly consequential: people who misunderstand the scientific consensus are less convinced that climate change is occurring, is human-caused, serious, and solvable; they are also less likely to support societal responses to address the problem. In this paper, we will present the results of a series of randomized controlled message experiments conducted to determine the most effective means of conveying the extent of the scientific consensus about human-caused climate change. The variables tested include quantitative vs. qualitative consensus descriptions, more vs. less precise descriptions, contextualizing metaphors, graphical representations, and explanations regarding why people may have developed a misperception. The findings from this formative research are being used to create a communication campaign that will be launched in fall 2013 by a leading American scientific society prior to the AGU Annual Meeting. A full description of the campaign will be presented.

Using formative research to lay the foundation for community level HIV prevention efforts: an example from the AIDS Community Demonstration Projects.

PubMed Central

Higgins, D L; O'Reilly, K; Tashima, N; Crain, C; Beeker, C; Goldbaum, G; Elifson, C S; Galavotti, C; Guenther-Grey, C

1996-01-01

The AIDS Community Demonstration Projects provided community-level HIV prevention interventions to historically hard-to-reach groups at high risk for HIV infection. The projects operated under a common research protocol which encompassed formative research, intervention delivery, process evaluation, and outcome evaluation. A formative research process specifically focusing on intervention development was devised to assist project staff in identifying, prioritizing, accessing, and understanding the intervention target groups. This process was central to the creation of interventions that were acceptable and unique to the target populations. Intended to be rapid, the process took 6 months to complete. Drawn from the disciplines of anthropology, community psychology, sociology, and public health, the formative research process followed distinct steps which included (a) defining the populations at high-risk for HIV; (b) gathering information about these populations through interviews with persons who were outside of, but who had contact with, the target groups (such as staff from the health department and alcohol and drug treatment facilities, as well as persons who interacted in an informal manner with the target groups, such as clerks in neighborhood grocery stores and bartenders); (c) interviewing people with access to the target populations (gatekeepers), and conducting observations in areas where these high-risk groups were reported to gather (from previous interviews); (d) interviewing members of these groups at high risk for HIV infection or transmission; and (e) systematically integrating information throughout the process. Semistructured interview schedules were used for all data collection in this process. This standardized systematic method yielded valuable information about the focal groups in each demonstration project site. The method, if adopted by others, would assist community intervention specialists in developing interventions that are culturally appropriate and meaningful to their respective target populations. PMID:8862154

From (Un)Willingness to InvolveMENt: Development of a Successful Study Brand for Recruitment of Diverse MSM to a Longitudinal HIV Research.

PubMed

Frew, Paula M; Williams, Victoria A; Shapiro, Eve T; Sanchez, Travis; Rosenberg, Eli S; Fenimore, Vincent L; Sullivan, Patrick S

2013-11-21

HIV continues to be a major concern among MSM, yet Black MSM have not been enrolled in HIV research studies in proportionate numbers to White MSM. We developed an HIV prevention research brand strategy for MSM. Questionnaires and focus groups were conducted with 54 participants. Descriptive statistics and chi-square analyses were performed and qualitative data were transcribed and content analyzed to identify common themes. Formative research results indicated that younger Black MSM (18-29 years) were less likely to think about joining prevention studies compared to older (≥30 years) Black MSM ( x 2 = 5.92, P = 0.015). Qualitative and quantitative results indicate four prominent themes related to brand development: (1) communication sources (message deliverer), (2) message (impact of public health messaging on perceptions of HIV research), (3) intended audience (underlying issues that influence personal relevance of HIV research), and (4) communication channels (reaching intended audiences). The findings highlight the importance of behavioral communication translational research to effectively engage hard-to-reach populations. Despite reservations, MSM in our formative study expressed a need for active involvement and greater education to facilitate their engagement in HIV prevention research. Thus, the brand concept of "InvolveMENt" emerged.

From (Un)Willingness to InvolveMENt: Development of a Successful Study Brand for Recruitment of Diverse MSM to a Longitudinal HIV Research

PubMed Central

Frew, Paula M.; Williams, Victoria A.; Shapiro, Eve T.; Sanchez, Travis; Rosenberg, Eli S.; Fenimore, Vincent L.; Sullivan, Patrick S.

2014-01-01

Background HIV continues to be a major concern among MSM, yet Black MSM have not been enrolled in HIV research studies in proportionate numbers to White MSM. We developed an HIV prevention research brand strategy for MSM. Methods Questionnaires and focus groups were conducted with 54 participants. Descriptive statistics and chi-square analyses were performed and qualitative data were transcribed and content analyzed to identify common themes. Results Formative research results indicated that younger Black MSM (18–29 years) were less likely to think about joining prevention studies compared to older (≥30 years) Black MSM (x2 = 5.92, P = 0.015). Qualitative and quantitative results indicate four prominent themes related to brand development: (1) communication sources (message deliverer), (2) message (impact of public health messaging on perceptions of HIV research), (3) intended audience (underlying issues that influence personal relevance of HIV research), and (4) communication channels (reaching intended audiences). Conclusion The findings highlight the importance of behavioral communication translational research to effectively engage hard-to-reach populations. Despite reservations, MSM in our formative study expressed a need for active involvement and greater education to facilitate their engagement in HIV prevention research. Thus, the brand concept of “InvolveMENt” emerged. PMID:24639900

Review on prevention of bacterial adhesion on contact lens using plasma treatment

NASA Astrophysics Data System (ADS)

Ramli, N. A. H.; Zaaba, S. K.; Mustaffa, M. T.; Zakaria, A.; Shahriman A., B.

2017-03-01

Many researches had been conducted to enhance the properties of contact lens. Most of the research conducted discussed on the factors that affect the adhesion process to contact lenses, rate of contact lens contamination, and type of microbe that adhere on the contact lens surface and contact lens casing. Studies on the proposed strategies or technology that can be used to slower down the formation of bacteria on contact lens are being explored. New technologies or strategies to prevent or slow down the adhesion of bacteria on contact lens have become a priority in this area. This review paper covers two main aspects, namely factor that affect the bacteria adhesion on contact lens and also the introduction of plasma treatment as a potential method for contact lens treatment.

MLBCD: a machine learning tool for big clinical data.

PubMed

Luo, Gang

2015-01-01

Predictive modeling is fundamental for extracting value from large clinical data sets, or "big clinical data," advancing clinical research, and improving healthcare. Machine learning is a powerful approach to predictive modeling. Two factors make machine learning challenging for healthcare researchers. First, before training a machine learning model, the values of one or more model parameters called hyper-parameters must typically be specified. Due to their inexperience with machine learning, it is hard for healthcare researchers to choose an appropriate algorithm and hyper-parameter values. Second, many clinical data are stored in a special format. These data must be iteratively transformed into the relational table format before conducting predictive modeling. This transformation is time-consuming and requires computing expertise. This paper presents our vision for and design of MLBCD (Machine Learning for Big Clinical Data), a new software system aiming to address these challenges and facilitate building machine learning predictive models using big clinical data. The paper describes MLBCD's design in detail. By making machine learning accessible to healthcare researchers, MLBCD will open the use of big clinical data and increase the ability to foster biomedical discovery and improve care.

Great Thermal Conductivity Enhancement of Silicone Composite with Ultra-Long Copper Nanowires.

PubMed

Zhang, Liye; Yin, Junshan; Yu, Wei; Wang, Mingzhu; Xie, Huaqing

2017-12-01

In this paper, ultra-long copper nanowires (CuNWs) were successfully synthesized at a large scale by hydrothermal reduction of divalent copper ion using oleylamine and oleic acid as dual ligands. The characteristic of CuNWs is hard and linear, which is clearly different from graphene nanoplatelets (GNPs) and multi-wall carbon nanotubes (MWCNTs). The thermal properties and models of silicone composites with three nanomaterials have been mainly researched. The maximum of thermal conductivity enhancement is up to 215% with only 1.0 vol.% CuNW loading, which is much higher than GNPs and MWCNTs. It is due to the ultra-long CuNWs with a length of more than 100 μm, which facilitates the formation of effective thermal-conductive networks, resulting in great enhancement of thermal conductivity.

Great Thermal Conductivity Enhancement of Silicone Composite with Ultra-Long Copper Nanowires

NASA Astrophysics Data System (ADS)

Zhang, Liye; Yin, Junshan; Yu, Wei; Wang, Mingzhu; Xie, Huaqing

2017-07-01

In this paper, ultra-long copper nanowires (CuNWs) were successfully synthesized at a large scale by hydrothermal reduction of divalent copper ion using oleylamine and oleic acid as dual ligands. The characteristic of CuNWs is hard and linear, which is clearly different from graphene nanoplatelets (GNPs) and multi-wall carbon nanotubes (MWCNTs). The thermal properties and models of silicone composites with three nanomaterials have been mainly researched. The maximum of thermal conductivity enhancement is up to 215% with only 1.0 vol.% CuNW loading, which is much higher than GNPs and MWCNTs. It is due to the ultra-long CuNWs with a length of more than 100 μm, which facilitates the formation of effective thermal-conductive networks, resulting in great enhancement of thermal conductivity.

Applying Critical Discourse Analysis in Health Policy Research: Case Studies in Regional, Organizational, and Global Health.

PubMed

Evans-Agnew, Robin A; Johnson, Susan; Liu, Fuqin; Boutain, Doris M

2016-08-01

Critical discourse analysis (CDA) is a promising methodology for policy research in nursing. As a critical theoretical methodology, researchers use CDA to analyze social practices and language use in policies to examine whether such policies may promote or impede social transformation. Despite the widespread use of CDA in other disciplines such as education and sociology, nursing policy research employing CDA methodology is sparse. To advance CDA use in nursing science, it is important to outline the overall research strategies and describe the steps of CDA in policy research. This article describes, using exemplar case studies, how nursing and health policy researchers can employ CDA as a methodology. Three case studies are provided to discuss the application of CDA research methodologies in nursing policy research: (a) implementation of preconception care policies in the Zhejiang province of China, (b) formation and enactment of statewide asthma policy in Washington state of the United States, and (c) organizational implementation of employee antibullying policies in hospital systems in the Pacific Northwest of the United States. Each exemplar details how CDA guided the examination of policy within specific contexts and social practices. The variations of the CDA approaches in the three exemplars demonstrated the flexibilities and potentials for conducting policy research grounded in CDA. CDA provides novel insights for nurse researchers examining health policy formation, enactment, and implementation. © The Author(s) 2016.

Health research capacity building in Georgia: a case-based needs assessment.

PubMed

Squires, A; Chitashvili, T; Djibuti, M; Ridge, L; Chyun, D

2017-06-01

Research capacity building in the health sciences in low- and middle-income countries (LMICs) has typically focused on bench-science capacity, but research examining health service delivery and health workforce is equally necessary to determine the best ways to deliver care. The Republic of Georgia, formerly a part of the Soviet Union, has multiple issues within its healthcare system that would benefit from expended research capacity, but the current research environment needs to be explored prior to examining research-focused activities. The purpose of this project was to conduct a needs assessment focused on developing research capacity in the Republic of Georgia with an emphasis on workforce and network development. A case study approach guided by a needs assessment format. We conducted in-country, informal, semi-structured interviews in English with key informants and focus groups with faculty, students, and representatives of local non-governmental organizations. Purposive and snowball sampling approaches were used to recruit participants, with key informant interviews scheduled prior to arrival in country. Documents relevant to research capacity building were also included. Interview results were coded via content analysis. Final results were organized into a SWOT (strengths, weaknesses, opportunities, threat) analysis format, with the report shared with participants. There is widespread interest among students and faculty in Georgia around building research capacity. Lack of funding was identified by many informants as a barrier to research. Many critical research skills, such as proposal development, qualitative research skills, and statistical analysis, were reported as very limited. Participants expressed concerns about the ethics of research, with some suggesting that research is undertaken to punish or 'expose' subjects. However, students and faculty are highly motivated to improve their skills, are open to a variety of learning modalities, and have research priorities aligned with Georgian health needs. This study's findings indicate that while the Georgian research infrastructure needs further development, Georgian students and faculty are eager to supplement its gaps by improving their own skills. These findings are consistent with those seen in other developing country contexts. Copyright © 2017 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.

Summary of the effects of engine throttle response on airplane formation-flying qualities

NASA Technical Reports Server (NTRS)

Walsh, Kevin R.

1993-01-01

A flight evaluation was conducted to determine the effect of engine throttle response characteristics on precision formation-flying qualities. A variable electronic throttle control system was developed and flight-tested on a TF-104G airplane with a J79-11B engine at the NASA Dryden Flight Research Facility. This airplane was chosen because of its known, very favorable thrust response characteristics. Ten research flights were flown to evaluate the effects of throttle gain, time delay, and fuel control rate limiting on engine handling qualities during a demanding precision wing formation task. Handling quality effects of lag filters and lead compensation time delays were also evaluated. The Cooper and Harper Pilot Rating Scale was used to assign levels of handling quality. Data from pilot ratings and comments indicate that throttle control system time delays and rate limits cause significant degradations in handling qualities. Threshold values for satisfactory (level 1) and adequate (level 2) handling qualities of these key variables are presented. These results may provide engine manufacturers with guidelines to assure satisfactory handling qualities in future engine designs.

Alcohol and Group Formation: A Multimodal Investigation of the Effects of Alcohol on Emotion and Social Bonding

PubMed Central

Sayette, Michael A.; Creswell, Kasey G.; Dimoff, John D.; Fairbairn, Catharine E.; Cohn, Jeffrey F.; Heckman, Bryan W.; Kirchner, Thomas R.; Levine, John M.; Moreland, Richard L.

2017-01-01

We integrated research on emotion and on small groups to address a fundamental and enduring question facing alcohol researchers: What are the specific mechanisms that underlie the reinforcing effects of drinking? In one of the largest alcohol-administration studies yet conducted, we employed a novel group-formation paradigm to evaluate the socioemotional effects of alcohol. Seven hundred twenty social drinkers (360 male, 360 female) were assembled into groups of 3 unacquainted persons each and given a moderate dose of an alcoholic, placebo, or control beverage, which they consumed over 36 min. These groups’ social interactions were video recorded, and the duration and sequence of interaction partners’ facial and speech behaviors were systematically coded (e.g., using the Facial Action Coding System). Alcohol consumption enhanced individual- and group-level behaviors associated with positive affect, reduced individual-level behaviors associated with negative affect, and elevated self-reported bonding. Our results indicate that alcohol facilitates bonding during group formation. Assessing nonverbal responses in social contexts offers new directions for evaluating the effects of alcohol. PMID:22760882

Investigating formation of ‘place attachment’ at pasar lama communities, Kota Tangerang

NASA Astrophysics Data System (ADS)

Syahrida, O.; Sumabrata, J.

2018-03-01

Place attachment as bonding between people-meaningful places) has been researched quite broadly. Part of this interest stems from the awareness that people–place bonds have become fragile as urbanization, increased mobility, and encroaching environmental problems threaten the existence of/and the connections to, places influences sense of attachment in Pasar Lama, Kota Tangerang. Despite its stauts as a Chinatown, the amount of Chinese inhabitant in Pasar Lama is only 1/5 compared to then total number of Native. Therefore an investigation is needed whether the advances of Kota Tangerang and increasing number of people affecting the formation of place attachment at Pasar Lama Communities. The analysis were conducted through eight factors, such as: physical, social, cultural, personal, memories and experiences, place satisfaction, interaction and activity features, and time factor. Qualitative method (ethnography approach) participatory observation and in-depth interview used as the method of research. The informant of this research are the local figure, local citizen, and local authority. Research concludes that the rapid development of Kota Tangerang and the number of citizens do not significantly affect the formation of place attachment, since both communities in Pasar Lama are considered having high attachment. The other factor is, Place Attachment is valued in contribution, a qualitative value instead sheer number of population. These contributions can be seen in the social, cultural and religious aspect based on factors on Place Attachment.

A randomized trial on screening for social determinants of health: the iScreen study.

PubMed

Gottlieb, Laura; Hessler, Danielle; Long, Dayna; Amaya, Anais; Adler, Nancy

2014-12-01

There is growing interest in clinical screening for pediatric social determinants of health, but little evidence on formats that maximize disclosure rates on a wide range of potentially sensitive topics. We designed a study to examine disclosure rates and hypothesized that there would be no difference in disclosure rates on face-to-face versus electronic screening formats for items other than highly sensitive items. We conducted a randomized trial of electronic versus face-to-face social screening formats in a pediatric emergency department. Consenting English-speaking and Spanish-speaking adult caregivers familiar with the presenting child's household were randomized to social screening via tablet computer (with option for audio assist) versus a face-to-face interview conducted by a fully bilingual/bicultural researcher. Almost all caregivers (96.8%) reported at least 1 social need, but rates of reporting on the more sensitive issues (household violence and substance abuse) were significantly higher in electronic format, and disclosure was marginally higher in electronic format for financial insecurity and neighborhood and school safety. There was a significant difference in the proportion of social needs items with higher endorsement in the computer-based group (70%) than the face-to-face group (30%). Pediatric clinical sites interested in incorporating caregiver-reported socioeconomic, environmental, and behavioral needs screening should consider electronic screening when feasible, particularly when assessing sensitive topics such as child safety and household member substance use. Copyright © 2014 by the American Academy of Pediatrics.

Experimental Characterization of Magnetogasdynamic Phenomena in Ultra-High Velocity Pulsed Plasma Jets

NASA Astrophysics Data System (ADS)

Loebner, Keith; Wang, Benjamin; Cappelli, Mark

2014-10-01

The formation and propagation of high velocity plasma jets in a pulsed, coaxial, deflagration-type discharge is examined experimentally. A sensitive, miniaturized, immersed probe array is used to map out magnetic flux density and associated radial current density as a function of time and axial position. This array is also used to probe the magnetic field gradient across the exit of the accelerator and in the jet formation region. Sensitive interferometry via a continuous-wave helium-neon laser source is used to probe the structure of the plasma jet over multiple chords and axial locations. A two dimensional plasma density gradient profile at an instant in time during jet formation is compiled via Shack-Hartmann wavefront sensor analysis. The qualitative characteristics of rarefaction and/or shock wave formation as a function of chamber back-pressure is examined via fast-framing ICCD imaging. These measurements are compared to existing resistive MHD simulations of the coaxial deflagration accelerator and the ensuing rarefaction jet that is expelled from the electrode assembly. The physical mechanisms governing the behavior of the discharge and the formation of these high energy density plasma jets are proposed and validated against both theoretical models and numerically simulated behavior. This research was conducted with Government support under and awarded by DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship, 32 CFR 168a.

The effects of Phytophthora ramorum infection on hydraulic conductivity and tylosis formation in tanoak sapwood

Treesearch

Bradley R. Collins; Jennifer L. Parke; Barb Lachenbruch; Everett M. Hansen

2009-01-01

Tanoak (Lithocarpus densiflorus (Hook. and Arn.) Rehder) is highly susceptible to sudden oak death, a disease caused by the oomycete Phytophthora ramorum Werres, De Cock & Man in’t Veld. Symptoms include a dying crown, bleeding cankers, and, eventually, death of infected trees. The cause of mortality is not well understood, but recent research indicates that...

Outcome of a Food Observational Study among Low-Income Preschool Children Participating in a Family-Style Meal Setting

ERIC Educational Resources Information Center

Treviño, Roberto P.; Vasquez, Liset; Shaw-Ridley, Mary; Mosley, Desiree; Jechow, Katherine; Piña, Christina

2015-01-01

Introduction: In the United States, one out of every seven low-income children between the ages of 2 and 5 years is at risk for overweight and obesity. Formative research was conducted to determine if preschool children participating in family-style meals consumed the minimum food servings according to U.S. Department of Agriculture dietary…

GRIP Experiment 2010

NASA Image and Video Library

2010-08-16

Cloud formations are seen through the window of NASA DC-8 aircraft during a flight, Tuesday, Aug. 17, 2010, over the Gulf of Mexico where researchers were studying weather patterns as part of trhe Genesis and Rapid Intensification Processes (GRIP) experiment, a NASA Earth science field experiment in 2010 that is being conducted to better understand how tropical storms form and develop into major hurricanes. Photo Credit: (NASA/Paul E. Alers)

In-Service Training as a Factor in the Formation of the Teacher's Individual Theory of Education

ERIC Educational Resources Information Center

Sakkoulis, Dimitris P.; Asimaki, Anna; Vergidis, Dimitris K.

2018-01-01

The purpose of this paper is the investigation of the prevailing forms of in-service training, the detection of the dominant pedagogical discourse they promote as well as their contribution to the shaping of the teacher's individual theory of education (I.T.E.). The research was conducted using semi-structured interviews with a sample of 11…

Determining How Tertiary Education and Human Capital Formation Influenced Economic Expansion in Israel, Japan, and Norway from 2000-2010

ERIC Educational Resources Information Center

Kalkbrenner, Erin Lee

2014-01-01

Researchers have calculated the relationship between human capital development and economic output by various means of econometric modeling and by use of numerous indicators under the context of an assortment of human capital theory. This study was conducted to identify new interpretations of the expansion of human capital in the form of tertiary…

Professional Choices and Teacher Identities in the Science Teacher Education Program at EACH/USP

ERIC Educational Resources Information Center

Dominguez, Celi Rodrigues Chaves; Viviani, Luciana Maria; Cazetta, Valéria; Guridi, Verónica Marcela; Faht, Elen Cristina; Pioker, Fabiana Curtopassi; Cubero, Josely

2015-01-01

In this article, we present results from a research project in which the main aim was to understand students' decision-making processes in choosing to become a teacher and to make sense of the relationships between this process and the formation of their identity as a teacher. The study was conducted with 39 students from the Science Teacher…

Examining the Use of Worked Example Video Podcasts in Middle School Mathematics Classrooms: A Formative Analysis

ERIC Educational Resources Information Center

Kay, Robin; Edwards, Jaime

2012-01-01

Video podcasts allow students to control when, where, and what they learn, as well as the pace of learning. Considerable research has been conducted in higher education on video podcast use, but not in middle schools (grades six to eight). This study investigated the use of worked example video podcasts in mathematics classrooms with students 11…

How Choice, Co-Creation, and Culture Are Changing What It Means to Be Net Savvy

ERIC Educational Resources Information Center

Lorenzo, George; Oblinger, Diana; Dziuban, Charles

2007-01-01

The vast amount of readily available information is just one reason for transforming the way in conducting research and acquiring knowledge. The nature of information itself has changed. In text and other formats, information is not just created by experts--it is created and co-created by amateurs. More than ever before, people can choose what,…

FIELD TEST INSTRUCTION 100-NR-2 OPERABLE UNIT DESIGN OPTIMIZATION STUDY FOR SEQUESTRATION OF SR-90 SATURATED ZONE APATITE PERMEABLE REACTIVE BARRIER EXTENSION

DOE Office of Scientific and Technical Information (OSTI.GOV)

BOWLES NA

2010-10-06

The objective of this field test instruction is to provide technical guidance for aqueous injection emplacement of an extension apatite permeable reactive barrier (PRE) for the sequestration of strontium-90 (Sr-90) using a high concentration amendment formulation. These field activities will be conducted according to the guidelines established in DOE/RL-2010-29, 100-NR-2 Design Optimization Study, hereafter referred to as the DOS. The DOS supports the Federal Facility Agreement Consent Order (EPA et al., 1989), Milestone M-16-06-01, and 'Complete Construction of a Permeable Reactive Barrier at 100-N.' Injections of apatite precursor chemicals will occur at an equal distance intervals on each end ofmore » the existing PRE to extend the PRB from the existing 91 m (300 ft) to at least 274 m (900 ft). Field testing at the 100-N Area Apatite Treatability Test Site, as depicted on Figure 1, shows that the barrier is categorized by two general hydrologic conceptual models based on overall well capacity and contrast between the Hanford and Ringold hydraulic conductivities. The upstream portion of the original barrier, shown on Figure 1, is characterized by relatively low overall well specific capacity. This is estimated from well development data and a lower contrast in hydraulic conductivity between the Hanford formation and Ringold Formations. Comparison of test results from these two locations indicate that permeability contrast between the Hanford formation and Ringold Formation is significantly less over the upstream one-third of the barrier. The estimated hydraulic conductivity for the Hanford formation and Ringold Formation over the upstream portion of the barrier based on observations during emplacement of the existing 91 m (300 ft) PRB is approximately 12 and 10 m/day (39 and 32 ft/day), respectively (PNNL-17429). However, these estimates should be used as a rough guideline only, as significant variability in hydraulic conductivity is likely to be observed in the barrier extension wells, particularly those in the Ringold formation. The downstream portion of the original barrier, shown on Figure 1, is characterized by generally higher well specific capacity and a larger hydraulic conductivity contrast between the Hanford formation and Ringold Formation. Hydraulic conductivity rates for the Hanford formation and Ringold Formation over the downstream portion of the barrier were estimated at 29 and 9 m/day (95 and 29 ft/day), respectively (with the Hanford formation hydraulic conductivity being greater in the downstream portion than the upstream portion). Once again, it should be noted that the actual conductivities may vary significantly, and the values state above should only be used as a rough initial estimates. Optimum apatite emplacement has been shown to occur when injections targeting the Hanford formation and the Ringold Formation are performed separately. The remainder of this test instruction provides details for conducting these formation-targeted injections.« less

Fishery population and habitat assessment in Puerto Rico streams: phase 2 final report

USGS Publications Warehouse

Kwak, Thomas J.; Smith, William E.; Buttermore, Elissa N.; Cooney, Patrick B.; Cope, W. Gregory

2013-01-01

This document serves as the Final Report for research on Puerto Rico stream fishes and their habitat funded by the Puerto Rico Department of Natural and Environmental Resources, in the form of a grant to the North Carolina Cooperative Fish and Wildlife Research Unit. This research was also conducted to meet the thesis requirement for a Master of Science degree granted to Elissa Buttermore (Chapters 3–4) and the dissertation requirement for a Doctor of Philospophy degree granted to William Smith (Chapters 5–8). Formatting differs among chapters, as each was developed to target a specific scientific journal and to conform to journal style.

Situational analysis of infant and young child nutrition policies and programmatic activities in Burkina Faso.

PubMed

Wuehler, Sara E; Ouedraogo, Albertine Wendpagnagdé

2011-04-01

Progress towards reducing mortality and malnutrition among children < 5 years of age has been less than needed to achieve related Millennium Development Goals. Therefore, several international agencies joined to 'Reposition children's right to adequate nutrition in the Sahel', starting with an analysis of current activities related to infant and young child nutrition (IYCN). The objectives of the present paper are to compare relevant national policies, training materials, programmes, and monitoring and evaluation activities with internationally accepted IYCN recommendations. These findings are available to assist countries in identifying inconsistencies and filling gaps in current programming. Between August and November 2008, key informants responsible for conducting IYCN-related activities in Burkina Faso were interviewed, and 153 documents were examined on the following themes: optimal breastfeeding and complementary feeding practices, prevention of micronutrient deficiencies, screening and treatment of acute malnutrition, prevention of mother-to-child transmission of HIV, food security and hygienic practices. National policy documents addressed nearly all of the key IYCN topics, specifically or generally. Formative research has identified some local barriers and beliefs related to general breastfeeding and complementary feeding practices, and other formative research addressed about half of the IYCN topics included in this review. However, there was little evidence that this formative research was being utilized in developing training materials and designing programme interventions. Nevertheless, the training materials that were reviewed do provide specific guidance for nearly all of the key IYCN topics. Although many of the IYCN programmes are intended for national coverage, we could only confirm with available reports that programme coverage extended to certain regions. Some programme monitoring and evaluation were conducted, but few of these provided information on whether the specific IYCN programme components were implemented as designed. Most surveys that were identified reported on general nutrition status indicators, but did not provide the detail necessary for programme impact evaluations. The policy framework is well established for optimal IYCN practices, but greater resources and capacity building are needed to: (i) conduct necessary research and adapt training materials and programme protocols to local needs; (ii) improve, carry out, and document monitoring and evaluation that highlight effective and ineffective programme components; and (iii) apply these findings in developing, expanding, and improving effective programmes. © 2011 Blackwell Publishing Ltd.

Applications of isothermal titration calorimetry - the research and technical developments from 2011 to 2015.

PubMed

Falconer, Robert J

2016-10-01

Isothermal titration calorimetry is a widely used biophysical technique for studying the formation or dissociation of molecular complexes. Over the last 5 years, much work has been published on the interpretation of isothermal titration calorimetry (ITC) data for single binding and multiple binding sites. As over 80% of ITC papers are on macromolecules of biological origin, this interpretation is challenging. Some researchers have attempted to link the thermodynamics constants to events at the molecular level. This review highlights work carried out using binding sites characterized using x-ray crystallography techniques that allow speculation about individual bond formation and the displacement of individual water molecules during ligand binding and link these events to the thermodynamic constants for binding. The review also considers research conducted with synthetic binding partners where specific binding events like anion-π and π-π interactions were studied. The revival of assays that enable both thermodynamic and kinetic information to be collected from ITC data is highlighted. Lastly, published criticism of ITC research from a physical chemistry perspective is appraised and practical advice provided for researchers unfamiliar with thermodynamics and its interpretation. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

Building a Community of Practice for Researchers: The International Network for Simulation-Based Pediatric Innovation, Research and Education.

PubMed

Cheng, Adam; Auerbach, Marc; Calhoun, Aaron; Mackinnon, Ralph; Chang, Todd P; Nadkarni, Vinay; Hunt, Elizabeth A; Duval-Arnould, Jordan; Peiris, Nicola; Kessler, David

2018-06-01

The scope and breadth of simulation-based research is growing rapidly; however, few mechanisms exist for conducting multicenter, collaborative research. Failure to foster collaborative research efforts is a critical gap that lies in the path of advancing healthcare simulation. The 2017 Research Summit hosted by the Society for Simulation in Healthcare highlighted how simulation-based research networks can produce studies that positively impact the delivery of healthcare. In 2011, the International Network for Simulation-based Pediatric Innovation, Research and Education (INSPIRE) was formed to facilitate multicenter, collaborative simulation-based research with the aim of developing a community of practice for simulation researchers. Since its formation, the network has successfully completed and published numerous collaborative research projects. In this article, we describe INSPIRE's history, structure, and internal processes with the goal of highlighting the community of practice model for other groups seeking to form a simulation-based research network.

Current-free double layers: A review

NASA Astrophysics Data System (ADS)

Singh, Nagendra

2011-12-01

During the last decade, there has been an upsurge in the research on current-free DLs (CFDLs). Research includes theory, laboratory measurements, and various applications of CFDLs ranging from plasma thrusters to acceleration of charged particles in space and astrophysical plasmas. The purpose of this review is to present a unified understanding of the basic plasma processes, which lead to the formation of CFDLs. The review starts with the discussion on early research on electric fields and double layers (DLs) and ion acceleration in planar plasma expansion. The review continues with the formation of DLs and rarefaction shocks (RFS) in expanding plasma with two electron populations with different temperatures. The basic theory mitigating the formation of a CFDL by two-electron temperature population is reviewed; we refer to such CFDLs as double layers structures formation by two-temperature electron populations (TET-CFDLs). Application of TET-CFDLS to ion acceleration in laboratory and space plasmas was discussed including the formation of stationary steady-state DLs. A quite different type of CFDLs forms in a helicon plasma device (HPD), in which plasma abruptly expands from a narrow plasma source tube into a wide diffusion tube with abruptly diverging magnetic fields. The formation mechanism of the CFDL in HPD, referred here as current free double layer structure in helicon plasma device (HPD-CFDL), and its applications are reviewed. The formation of a TET-CFDL is due to the self-consistent separation of the two electron populations parallel to the ambient magnetic field. In contrast, a HPD-CFDL forms due to self-consistent separation of electrons and ion perpendicular to the abruptly diverging magnetic field in conjunction with the conducting wall of the expansion chamber in the HPD. One-dimensional theoretical models of CFDLs based on steady-state solution of Vlasov-Poisson system of equations are briefly discussed. Applications of CFDLs ranging from helicon double-layer thrusters (HDLTs) to the accelerations of ions in space and astrophysical plasmas are summarized.

Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased well

DOEpatents

Vail, III, William Banning

2001-01-01

Methods of operation of different types of multiple electrode apparatus vertically disposed in a cased well to measure information useful to determine the resistivity of adjacent geological formations from within the cased well are described. The multiple electrode apparatus has a plurality of spaced apart voltage measurement electrodes that electrically engage a portion of the interior of the cased well. During measurements of information useful to determine formation resistivity, current is conducted between a first current conducting electrode in electrical contact with the interior of the cased well to a second current conducting electrode that is also in electrical contact with the interior of the cased well. The first and second current conducting electrodes are separated by a distance sufficient so that at least a portion of the current conducted between the first and second current conducting electrodes is conducted through the geological formation of interest.

Block copolymers for alkaline fuel cell membrane materials

NASA Astrophysics Data System (ADS)

Li, Yifan

Alkaline fuel cells (AFCs) using anion exchange membranes (AEMs) as electrolyte have recently received considerable attention. AFCs offer some advantages over proton exchange membrane fuel cells, including the potential of non-noble metal (e.g. nickel, silver) catalyst on the cathode, which can dramatically lower the fuel cell cost. The main drawback of traditional AFCs is the use of liquid electrolyte (e.g. aqueous potassium hydroxide), which can result in the formation of carbonate precipitates by reaction with carbon dioxide. AEMs with tethered cations can overcome the precipitates formed in traditional AFCs. Our current research focuses on developing different polymer systems (blend, block, grafted, and crosslinked polymers) in order to understand alkaline fuel cell membrane in many aspects and design optimized anion exchange membranes with better alkaline stability, mechanical integrity and ionic conductivity. A number of distinct materials have been produced and characterized. A polymer blend system comprised of poly(vinylbenzyl chloride)-b-polystyrene (PVBC-b-PS) diblock copolymer, prepared by nitroxide mediated polymerization (NMP), with poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) or brominated PPO was studied for conversion into a blend membrane for AEM. The formation of a miscible blend matrix improved mechanical properties while maintaining high ionic conductivity through formation of phase separated ionic domains. Using anionic polymerization, a polyethylene based block copolymer was designed where the polyethylene-based block copolymer formed bicontinuous morphological structures to enhance the hydroxide conductivity (up to 94 mS/cm at 80 °C) while excellent mechanical properties (strain up to 205%) of the polyethylene block copolymer membrane was observed. A polymer system was designed and characterized with monomethoxy polyethylene glycol (mPEG) as a hydrophilic polymer grafted through substitution of pendent benzyl chloride groups of a PVBC-b-PS. The incorporation of the hydrophilic polymer allows for an investigation of the effect of hydration on ionic conductivity, resulting in the increase in membrane water affinity, enhancement of conductivity and reduced dependence of conductivity on relative humidity. A study of crosslinking of block copolymers was done wherein the crosslinking occurs in the non-matrix phase in order to maintain mechanical properties. The formation of a cationic crosslinked structure improves the mechanical integrity of the membrane in water while showing little deleterious effect on ionic conductivity and mechanical properties.

The Effect of Jetting Parameters on the Performance of Droplet Formation for Ink-Jet Rapid Prototyping

NASA Technical Reports Server (NTRS)

Helmer, Wayne

1998-01-01

Heinzl et al. (1985) reports that experiments in ink-jets to produce drawings or signals occurred as early as 1930. Various companies such as IBM and Pitney-Bowes have conducted extensive studies on these devices for many years. Many such reports are available in such journals as the IBM Journal of Research and Development. While numerous articles have been published on the jetting characteristics of ink and water, the literature is rather limited on fluids such as waxes (Gao & Sonin 1994) or non-water based fluids (Passow, et al. 1993). This present study extends the knowledge base to determine the performance of molten waxes in "ink-jet" type printers for rapid prototyping. The purpose of this research was to qualitatively and quantitatively study the droplet formation of a drop-on-demand ink-jet type nozzle system for rapid prototyping.

Jump start: a targeted substance abuse prevention program.

PubMed

Harrington, N G; Donohew, L

1997-10-01

A substance abuse prevention and life skills program for economically disadvantaged, high sensation seeking African American teens was developed and tested in Cincinnati, Ohio. Formative research was conducted to determine program content and format. Over two implementations, 289 individuals in the target population were recruited as participants for the field test of the program. For the first implementation, participants were randomly selected from the city's summer youth employment program. For the second, a media campaign was designed to recruit participants. Process evaluation indicated that participants evaluated the program extremely positively. Outcome evaluation indicated that significant pretest differences between high and low sensation seekers were neutralized for liquor and marijuana in both years of the program and for attitude toward drugs in the first year of the program. These results suggest that sensation seeking is a useful message design and audience-targeting variable for substance abuse prevention program design. Implications and recommendations for future research are discussed.

Branding a School-Based Campaign Combining Healthy Eating and Eco-friendliness.

PubMed

Folta, Sara C; Koch-Weser, Susan; Tanskey, Lindsay A; Economos, Christina D; Must, Aviva; Whitney, Claire; Wright, Catherine M; Goldberg, Jeanne P

2018-02-01

To develop a branding strategy for a campaign to improve the quality of foods children bring from home to school, using a combined healthy eating and eco-friendly approach and for a control campaign focusing solely on nutrition. Formative research was conducted with third- and fourth-grade students in lower- and middle-income schools in Greater Boston and their parents. Phase I included concept development focus groups. Phase II included concept testing focus groups. A thematic analysis approach was used to identify key themes. In phase I, the combined nutrition and eco-friendly messages resonated; child preference emerged as a key factor affecting food from home. In phase II, key themes included fun with food and an element of mystery. Themes were translated into a concept featuring food face characters. Iterative formative research provided information necessary to create a brand that appealed to a specified target audience. Copyright © 2017. Published by Elsevier Inc.

Improving Prevention Curricula: Lessons Learned Through Formative Research on the Youth Message Development Curriculum.

PubMed

Greene, Kathryn; Catona, Danielle; Elek, Elvira; Magsamen-Conrad, Kate; Banerjee, Smita C; Hecht, Michael L

2016-10-01

This article describes formative research (a pilot study, interviews, and focus groups) conducted as part of a feasibility test of 2 versions (Analysis vs. Planning) of a brief media literacy intervention titled Youth Message Development (YMD). The intervention targets high school student alcohol use with activities to understand persuasion strategies, increase counter-arguing, and then apply these new skills to ad analysis or a more engaging ad poster planning activity. Based on the theory of active involvement (Greene, 2013), the Planning curriculum is proposed to be more effective than the Analysis curriculum. Overall, results of the formative research indicated that students (N = 182) and mentors/teachers (N = 53) perceived the YMD Planning curriculum as more interesting, involving, and novel, and these ratings were associated with increased critical thinking about the impact of advertising, lower alcohol use intentions, and fewer positive expectations about the effects of alcohol use. Qualitative feedback indicated a need to supplement alcohol-focused ad stimuli with ads targeting other advertising images, use incentives and competition-based activities to further enhance student motivation, and provide flexibility to enhance the appropriateness of the curriculum to various settings. These concerns led to the development of a revised curriculum and plans for further study.

Acrylamide formation in different foods and potential strategies for reduction.

PubMed

Stadler, Richard H

2005-01-01

This paper summarizes the progress made to date on acrylamide research pertaining to analytical methods, mechanisms of formation, and mitigation research in the major food categories. Initial difficulties with the establishment of reliable analytical methods have today in most cases been overcome, but challenges still remain in terms of the needs to develop simple and rapid test methods. Several researchers have identified that the main pathway of formation of acrylamide in foods is linked to the Maillard reaction and in particular the amino acid asparagine. Decarboxylation of the resulting Schiff base is a key step, and the reaction product may either furnish acrylamide directly or via 3-aminopropionamide. An alternative proposal is that the corresponding decarboxylated Amadori compound may release acrylamide by a beta-elimination reaction. Many experimental trials have been conducted in different foods, and a number of possible measures identified to relatively lower the amounts of acrylamide in food. The validity of laboratory trials must, however, be assessed under actual food processing conditions. Some progress in relatively lowering acrylamide in certain food categories has been achieved, but can at this stage be considered marginal. However, any options that are chosen to reduce acrylamide must be technologically feasible and also not negatively impact the quality and safety of the final product.

Improving Prevention Curricula: Lessons Learned Through Formative Research on the Youth Message Development Curriculum

PubMed Central

GREENE, KATHRYN; CATONA, DANIELLE; ELEK, ELVIRA; MAGSAMEN-CONRAD, KATE; BANERJEE, SMITA C.; HECHT, MICHAEL L.

2016-01-01

This article describes formative research (a pilot study, interviews, and focus groups) conducted as part of a feasibility test of 2 versions (Analysis vs. Planning) of a brief media literacy intervention titled Youth Message Development (YMD). The intervention targets high school student alcohol use with activities to understand persuasion strategies, increase counter-arguing, and then apply these new skills to ad analysis or a more engaging ad poster planning activity. Based on the theory of active involvement (Greene, 2013), the Planning curriculum is proposed to be more effective than the Analysis curriculum. Overall, results of the formative research indicated that students (N = 182) and mentors/teachers (N = 53) perceived the YMD Planning curriculum as more interesting, involving, and novel, and these ratings were associated with increased critical thinking about the impact of advertising, lower alcohol use intentions, and fewer positive expectations about the effects of alcohol use. Qualitative feedback indicated a need to supplement alcohol-focused ad stimuli with ads targeting other advertising images, use incentives and competition-based activities to further enhance student motivation, and provide flexibility to enhance the appropriateness of the curriculum to various settings. These concerns led to the development of a revised curriculum and plans for further study. PMID:27684111

The therapeutic alliance in internet interventions: A narrative review and suggestions for future research.

PubMed

Berger, Thomas

2017-09-01

Research on Internet interventions has grown rapidly over the recent years and evidence is growing that Internet-based treatments often result in similar outcomes as conventional face-to-face psychotherapy. Yet there are still unanswered concerns such as whether a therapeutic alliance can be established over the Internet and whether the alliance is important in this new treatment format. A narrative review of studies formally assessing the therapeutic alliance in Internet interventions was conducted. It is the first review summarizing findings on the therapeutic alliance that (i) distinguishes between different forms of Internet interventions and (ii) does not restrict itself to specific Internet-based treatment formats such as guided self-help treatments, e-mail or videoconferencing therapies. Independent of communication modalities, diagnostic groups and amount of contact between clients and therapists, client-rated alliance scores were high, roughly equivalent to alliance ratings found in studies on face-to-face therapy. Mixed results were found regarding the therapist-rated alliance and alliance-outcome associations. The review points to the limitations of the available evidence and identifies unanswered questions. It is concluded that one of the major tasks for future research is to identify unique characteristics of the therapeutic alliance in the different treatment formats.

African Primary Care Research: Writing a research report

PubMed Central

Mash, Bob

2014-01-01

Abstract Presenting a research report is an important way of demonstrating one's ability to conduct research and is a requirement of most research-based degrees. Although known by various names across academic institutions, the structure required is mostly very similar, being based on the Introduction, Methods, Results, Discussion format of scientific articles. This article offers some guidance on the process of writing, aimed at helping readers to start and to continue their writing; and to assist them in presenting a report that is received positively by their readers, including examiners. It also details the typical components of the research report, providing some guidelines for each, as well as the pitfalls to avoid. This article is part of a series on African Primary Care Research that aims to build capacity for research particularly at a Master's level. PMID:26245441

A framework for conducting follow-up meetings with parents after a child's death in the pediatric intensive care unit.

PubMed

Eggly, Susan; Meert, Kathleen L; Berger, John; Zimmerman, Jerry; Anand, Kanwaljeet J S; Newth, Christopher J L; Harrison, Rick; Carcillo, Joseph; Dean, J Michael; Willson, Douglas F; Nicholson, Carol

2011-03-01

To describe a framework to assist pediatric intensive care unit physicians in conducting follow-up meetings with parents after their child's death. Many childhood deaths occur in pediatric intensive care units. Parents of children who die in pediatric intensive care units often desire a follow-up meeting with the physician(s) who cared for their child. Prior research conducted by the Collaborative Pediatric Critical Care Research Network on the experiences and perspectives of bereaved parents and pediatric intensive care unit physicians regarding the desirability, content, and conditions of follow-up meetings. The framework includes suggestions for inviting families to follow-up meetings (i.e., developing an institutional system, invitation timing, and format); preparing for the meeting (i.e., assessing family preferences; determining location, attendees, and discussion topics; reviewing medical and psychosocial history); structure of the meeting (i.e., opening, closing, and developing a meeting agenda); communicating effectively during the meeting; and follow-up for both parents and physicians. This framework is based on the experience and perspectives of bereaved parents and pediatric intensive care unit physicians. Future research should be conducted to determine the extent to which physician-parent follow-up meetings provide a benefit to parents, families, physicians, and other healthcare providers participating in these encounters.

Effect of volumetric concentration of MWCNTs on the stability and thermal conductivity of nanofluids

NASA Astrophysics Data System (ADS)

Rehman, Wajid Ur; Bhat, A. H.; Suliamon, A. A.; Khan, Ihsan Ullah; Ullah, Hafeez

2016-11-01

Environmental concerns and running down of the fossil fuel deposits which are generally being used as base oil in Drilling Fluid/Mud have attended worldwide attention and thereby, researchers have focused on using environmentally friendly drilling fluids. This study demonstrates the preparation of drilling fluids and to explore the effect of increase in the volumetric concentration of nanoparticles on the stability and thermal conductivity of nanofluids. In this research, for the formation of nanofluids, Jatropha Seed Oil was used as the base oil with the addition of multi-walled carbon nanotubes as the nanoparticles using sonication technique. The raw multi-walled carbon nanotubes were characterized by using SEM for morphological examination. The prepared drilling fluid were characterized by using UV-Visible spectroscopic technique for analyzing the stability. Thermal Conductivity measurements were also carried out for heat transfer efficiency. It was observed that the heat transfer capability of the nanofluid ameliorates with the increase in the loading percentage of multi-walled carbon nanotubes.

Analysis of Advanced Thermoelectric Materials and Their Functional Limits

NASA Technical Reports Server (NTRS)

Kim, Hyun Jung

2015-01-01

The world's demand for energy is increasing dramatically, but the best energy conversion systems operate at approximately 30% efficiency. One way to decrease energy loss is in the recovery of waste heat using thermoelectric (TE) generators. A TE generator is device that generates electricity by exploiting heat flow across a thermal gradient. The efficiency of a TE material for power generation and cooling is determined by the dimensionless Figure of Merit (ZT): ZT = S(exp. 2)sigmaT/?: where S is the Seebeck coefficient, sigma is the electrical conductivity, T is the absolute temperature, and ? is the thermal conductivity. The parameters are not physically independent, but intrinsically coupled since they are a function of the transport properties of electrons. Traditional research on TE materials has focused on synthesizing bulk semiconductor-type materials that have low thermal conductivity and high electrical conductivity affording ZT values of 1. The optimization of the s/? ratio is difficult to achieve using current material formats, as these material constants are complementary. Recent areas of research are focusing on using nanostructural artifacts that introduce specific dislocations and boundary conditions that scatter the phonons. This disrupts the physical link between thermal (phonon) and electrical (electron) transport. The result is that ? is decreased without decreasing s. These material formats give ZT values of up to 2 which represent approximately 18% energy gain from waste heat recovery. The next challenge in developing the next generation of TE materials with superior performance is to tailor the interconnected thermoelectric physical parameters of the material system. In order to approach this problem, the fundamental physics of each parameter S, sigma, and ? need to be physically understood in their context of electron/phonon interaction for the construction of new high ZT thermoelectric devices. Is it possible to overcome the physical limit imposed by of the effect of phonon lattice oscillation and energetic electrons towards thermal conductivity? Is the Seebeck coefficient, based on the difference in voltage over temperature gradient ( deltaV/deltaT), an intrinsic parameter of each material? All these parameters were manipulated using nano-bridge and twin-lattice structural concepts at the NASA Langley Research Center. This talk will review the current trend of TE research to optimize the ZT and discuss about new approaches on increasing ZT within functional limits of each parameter.

Incorporation of Blended Learning in Introductory Courses: A Research-Based Approach to Evaluation

NASA Astrophysics Data System (ADS)

Strey, S. T.; Charlevoix, D. J.; Guarente, B. A.; Snodgrass, E. R.

2008-12-01

We evaluate the learning outcomes of students in large enrollment classes comparing a blended learning course format and a traditional lecture section. Blended learning, here, describes instruction that is a combination of face-to-face meeting with asynchronous online learning, resulting in reduced class time. The course, Severe and Hazardous Weather, relies heavily on graphics and animations of weather events available online, both current and archived, and thereby lends itself well to a blended format. Severe and Hazardous Weather is a popular general education requirement course at the University of Illinois with consistently high enrollments (greater than 200 students per section) and classes at capacity. Unlike many past studies, this blended learning format is applied to a large-enrollment course of approximately 100 students. Curriculum was redesigned during fall 2007 from typical lecture to the blended format. The redesign process followed best practices grounded in peer-reviewed literature on blended and online learning. We will provide a brief overview of the course structure, but focus on the evaluation of both the curriculum design and student outcomes as compared to the traditional lecture-based course. Evaluation is based on course objectives stated in the course syllabus and is conducted following best practices; the research project received University Institutional Review Board approval prior to the start of the study.

A novel method for automated assessment of megakaryocyte differentiation and proplatelet formation.

PubMed

Salzmann, M; Hoesel, B; Haase, M; Mussbacher, M; Schrottmaier, W C; Kral-Pointner, J B; Finsterbusch, M; Mazharian, A; Assinger, A; Schmid, J A

2018-06-01

Transfusion of platelet concentrates represents an important treatment for various bleeding complications. However, the short half-life and frequent contaminations with bacteria restrict the availability of platelet concentrates and raise a clear demand for platelets generated ex vivo. Therefore, in vitro platelet generation from megakaryocytes represents an important research topic. A vital step for this process represents accurate analysis of thrombopoiesis and proplatelet formation, which is usually conducted manually. We aimed to develop a novel method for automated classification and analysis of proplatelet-forming megakaryocytes in vitro. After fluorescent labelling of surface and nucleus, MKs were automatically categorized and analysed with a novel pipeline of the open source software CellProfiler. Our new workflow is able to detect and quantify four subtypes of megakaryocytes undergoing thrombopoiesis: proplatelet-forming, spreading, pseudopodia-forming and terminally differentiated, anucleated megakaryocytes. Furthermore, we were able to characterize the inhibitory effect of dasatinib on thrombopoiesis in more detail. Our new workflow enabled rapid, unbiased, quantitative and qualitative in-depth analysis of proplatelet formation based on morphological characteristics. Clinicians and basic researchers alike will benefit from this novel technique that allows reliable and unbiased quantification of proplatelet formation. It thereby provides a valuable tool for the development of methods to generate platelets ex vivo and to detect effects of drugs on megakaryocyte differentiation.

Visualizing risks in cancer communication: A systematic review of computer-supported visual aids.

PubMed

Stellamanns, Jan; Ruetters, Dana; Dahal, Keshav; Schillmoeller, Zita; Huebner, Jutta

2017-08-01

Health websites are becoming important sources for cancer information. Lay users, patients and carers seek support for critical decisions, but they are prone to common biases when quantitative information is presented. Graphical representations of risk data can facilitate comprehension, and interactive visualizations are popular. This review summarizes the evidence on computer-supported graphs that present risk data and their effects on various measures. The systematic literature search was conducted in several databases, including MEDLINE, EMBASE and CINAHL. Only studies with a controlled design were included. Relevant publications were carefully selected and critically appraised by two reviewers. Thirteen studies were included. Ten studies evaluated static graphs and three dynamic formats. Most decision scenarios were hypothetical. Static graphs could improve accuracy, comprehension, and behavioural intention. But the results were heterogeneous and inconsistent among the studies. Dynamic formats were not superior or even impaired performance compared to static formats. Static graphs show promising but inconsistent results, while research on dynamic visualizations is scarce and must be interpreted cautiously due to methodical limitations. Well-designed and context-specific static graphs can support web-based cancer risk communication in particular populations. The application of dynamic formats cannot be recommended and needs further research. Copyright © 2017 Elsevier B.V. All rights reserved.

The U. S. DOE Carbon Storage Program: Status and Future Directions

NASA Astrophysics Data System (ADS)

Damiani, D.

2016-12-01

The U.S. Department of Energy (DOE) is taking steps to reduce carbon dioxide (CO2) emissions through clean energy innovation, including carbon capture and storage (CCS) research. The Office of Fossil Energy Carbon Storage Program is focused on ensuring the safe and permanent storage and/or utilization of CO2 captured from stationary sources. The Program is developing and advancing geologic storage technologies both onshore and offshore that will significantly improve the effectiveness of CCS, reduce the cost of implementation, and be ready for widespread commercial deployment in the 2025-2035 timeframe. The technology development and field testing conducted through this Program will be used to benefit the existing and future fleet of fossil fuel power generating and industrial facilities by creating tools to increase our understanding of geologic reservoirs appropriate for CO2 storage and the behavior of CO2 in the subsurface. The Program is evaluating the potential for storage in depleted oil and gas reservoirs, saline formations, unmineable coal, organic-rich shale formations, and basalt formations. Since 1997, DOE's Carbon Storage Program has significantly advanced the CCS knowledge base through a diverse portfolio of applied research projects. The Core Storage R&D research component focuses on analytic studies, laboratory, and pilot- scale research to develop technologies that can improve wellbore integrity, increase reservoir storage efficiency, improve management of reservoir pressure, ensure storage permanence, quantitatively assess risks, and identify and mitigate potential release of CO2 in all types of storage formations. The Storage Field Management component focuses on scale-up of CCS and involves field validation of technology options, including large-volume injection field projects at pre-commercial scale to confirm system performance and economics. Future research involves commercial-scale characterization for regionally significant storage locations capable of storing from 50 to 100 million metric tons of CO2 in a saline formation. These projects will lay the foundation for fully integrated carbon capture and storage demonstrations of future first of a kind (FOAK) coal power projects. Future research will also bring added focus on offshore CCS.

Formative Evaluation of the Behavior Change Components within a Colorado Weatherization Assistance Program

NASA Astrophysics Data System (ADS)

Sandoval, Perla K.

A formative evaluation of behavior change elements of an ongoing Weatherization Assistance Program (WAP) offered by the Energy Resource Center (E.R.C.) in Denver, CO was conducted. The WAP as administered by the E.R.C. in Colorado saves residents an average 15% of energy consumption (E.R.C., 2015). However, research suggests that adding behavioral components to WAPs could increase energy savings to 21-26% (Gregory, 1992; APPRAISE, 2002). The goal of this evaluation is to provide recommendations to E.R.C. for program changes using Community Based Social Marketing (CBSM) and Theory of Planned Behavior. The CBSM Step 1- Step 3 is the focus of this formative evaluation. This program evaluation has four components: 1) review of written materials, 2) interviews with staff, 3) surveys mailed to E.R.C. clients and 4) in-home observations conducted with E.R.C. clients. Results of this formative evaluation has 3 sections of behaviors recommended for future intervention high priority, mid priority, and low priority recommendations based on CBSM penetration, probability, and impact factors. Behaviors that are listed as high priority for E.R.C. Behavioral intervention are cold water washing, hang drying, setting back thermostats, and window coverings. Overall increase in staff engagement is also recommended to be pursued. Each staff level is also given recommendations on how to engage in behavior change interventions.

Electrical Conductive Mechanism of Gas Hydrate-Bearing Reservoirs in the Permafrost Region of Qilian Mountain

NASA Astrophysics Data System (ADS)

Peng, C.; Zou, C.; Tang, Y.; Liu, A.; Hu, X.

2017-12-01

In the Qilian Mountain, gas hydrates not only occur in pore spaces of sandstones, but also fill in fractures of mudstones. This leads to the difficulty in identification and evaluation of gas hydrate reservoir from resistivity and velocity logs. Understanding electrical conductive mechanism is the basis for log interpretation. However, the research is insufficient in this area. We have collected well logs from 30 wells in this area. Well logs and rock samples from DK-9, DK-11 and DK-12 wells were used in this study. The experiments including SEM, thin section, NMR, XRD, synthesis of gas hydrate in consolidated rock cores under low temperature and measurement of their resistivity and others were performed for understanding the effects of pore structure, rock composition, temperature and gas hydrate on conductivity. The results show that the porosity of reservoir of pore filling type is less than 10% and its clay mineral content is high. As good conductive passages, fractures can reduce resistivity of water-saturated rock. If fractures in the mudstone are filled by calcite, resistivity increases significantly. The resistivity of water-saturated rock at 2°C is twice of that at 18°C. The gas hydrate formation process in the sandstone was studied by resistivity recorded in real time. In the early stage of gas hydrate formation, the increase of residual water salinity may lead to the decrease of resistivity. In the late stage of gas hydrate formation, the continuity decrease of water leads to continuity increase of resistivity. In summary, fractures, rock composition, temperature and gas hydrate are important factors influencing resistivity of formation. This study is helpful for more accurate evaluation of gas hydrate from resistivity log. Acknowledgment: We acknowledge the financial support of the National Special Program for Gas Hydrate Exploration and Test-production (GZH201400302).

Quarterly Progress Report for the Chemical and Energy Research Section of the Chemical Technology Division: July-September 1999

DOE Office of Scientific and Technical Information (OSTI.GOV)

Jubin, R.T.

2001-04-16

This report summarizes the major activities conducted in the Chemical and Energy Research Section of the Chemical Technology Division at Oak Ridge National Laboratory (ORNL) during the period July-September 1999. The section conducts basic and applied research and development in chemical engineering, applied chemistry, and bioprocessing, with an emphasis on energy-driven technologies and advanced chemical separations for nuclear and waste applications. The report describes the various tasks performed within ten major areas of research: Hot Cell Operations, Process Chemistry, Molten Salt Reactor Experiment (MSRE) Remediation Studies, Chemistry Research, Physical Properties Research, Biochemical Engineering, Separations and Materials Synthesis, Fluid Structures andmore » Properties, Biotechnology Research, and Molecular Studies. The name of a technical contact is included with each task described, and readers are encouraged to contact these individuals if they need additional information. Activities conducted within the area of the Cell Operations involved the testing of two continuously stirred tank reactors in series to evaluate the Savannah River-developed process of small-tank tetraphenylborate precipitation to remove cesium, strontium and transuranics from supernatant. Within the area of Process Chemistry, various topics related to solids formation in process solutions from caustic treatment of Hanford sludge were addressed. Saltcake dissolution efforts continued, including the development of a predictive algorithm. New initiatives for the section included modeling activities centered on detection of hydrogen in {sup 233}U storage wells and wax formation in petroleum mixtures, as well as support for the Spallation Neutron Source (investigation of transmutation products formed during operation). Other activities involved in situ grouting and evaluation of options for use (i.e., as castable shapes) of depleted uranium. In a continuation of activities of the preceding quarter, MSRE Remediation Studies focused on recovery of {sup 233}U and its conversion to a stable oxide and radiolysis experiments to permit remediation of MSRE fuel salt. Investigation of options for final disposition of the {sup 233}U inventory represents a new initiative within this area. In the area of Chemistry Research, activities included studies relative to molecular imprinting for use in areas such as selective sorption, chemical sensing, and catalysis, as well as spectroscopic investigation into the fundamental interaction between ionic solvents and solutes in both low- and high-temperature ionic liquids.« less

Formative Assessment as a Tool to Benefit the Student/Mentor Relationship in the Northern Ecosystem Research for Undergraduates (NERU) Project

NASA Astrophysics Data System (ADS)

Froburg, E.; Varner, R. K.

2016-12-01

Partners in the Northern Ecosystem Research for Undergraduates (NERU) project, funded by the NSF Research Experience for Undergraduates (REU) program, have developed a multi-instrument formative assessment approach aimed at maintaining a responsive relationship between undergraduate participants and their research mentors. All evaluation is conducted independent of the NERU scientific/mentor team, by the Joan and James Leitzel Center for Mathematics, Science, and Engineering Education. The 10-week summer research experience has 3 components. 1) REU fellows spend the first 3-weeks at the University of New Hampshire, where they acquire background knowledge of Earth System Science and biogeochemistry; 2) students spend the following 4-weeks at the Abisko Scientific Research Station in research co-mentored by UNH-based and ANS-based scientists; and 3) fellows return to UNH to complete any additional analytical work, synthesize their results, and prepare their projects for presentation. There are three primary tools that are used formatively, and the results are integrated over multiple time periods. Application and Pre-program Survey: Although these two instruments are primarily components of participant recruitment and the summative program metrics, they also provide a baseline understanding of student preparation and perspectives. Mentor Pairing Survey: This component was added prior to the fourth year of the program, in response to specific trends in participant feedback. The survey is completed by both participants and mentors, and is designed to match research goals, skills, and personalities. Focus Groups: Two focus group sessions are held during the summer research experience—one midway through the 3rd week, just prior to departure for Sweden, and a second session just prior to completion of the 10-week summer program. These focus groups provide immediate feedback on, and opportunity for response to, student concerns in a range of areas. Participants are also encouraged to approach the evaluator individually. Taken as a whole, formative assessment allows the project team to respond immediately to specific participant concerns, and to also make longer-term programmatic changes reflective of trends in survey and focus group responses.

Characteristics of Pre-Service Teachers' Online Discourse: The Study of Local Streams

NASA Astrophysics Data System (ADS)

Liang, Ling L.; Ebenezer, Jazlin; Yost, Deborah S.

2010-02-01

This study describes the characteristics of pre-service teachers' discourse on a WebCT Bulletin Board in their investigations of local streams in an integrated mathematics and science course. A qualitative analysis of data revealed that the pre-service teachers conducted collaborative discourse in framing their research questions, conducting research and writing reports. The science teacher educator provided feedback and carefully crafted prompts to help pre-service teachers develop and refine their work. Overall, the online discourse formats enhance out-of-class communication and support collaborative group work. But the discourse on the critical examination of one another's point of views rooted in scientific inquiry appeared to be missing. It is suggested that pre-service teachers should be given more guidance and opportunities in science courses in carrying out scientific discourse that reflects reform-based scientific inquiry.

Designing a socio-normative intervention to reduce anemia in Odisha India: A formative research protocol

PubMed Central

Sedlander, Erica; Rimal, Rajiv N; Talegawkar, Sameera A.; Yilma, Hagere; Munar, Wolfgang

2018-01-01

Background: More than half of women of reproductive age in India are anemic. Anemia is associated with increased risk of preterm delivery, higher maternal mortality and contributes to fatigue, which affects women’s work productivity. The World Health Organization (WHO) recommends daily oral iron and folic acid (IFA) supplements during pregnancy and weekly supplements for women of reproductive age. Government programs and global donors have distributed and promoted IFA supplements in India for over four decades. However, initial intake and compliance remain inadequate. Objectives: This protocol describes the formative research phase of a larger study, which will test, through a randomized controlled trial, the hypothesis that a social norms-based behavioral intervention in Odisha, India will improve uptake of IFA supplements and reduce anemia among reproductive age women as compared to usual care. The focus of this paper is on the formative research required to develop a sound intervention. We will examine socio-normative barriers to and facilitators of IFA supplement uptake. Methods and analysis: Based on the Theory of Normative Social Behavior, we will adopt a mixed-method, multilevel approach. We will collect data using focus groups, in-depth interviews, observations, Rapid Participatory Ethnographic Evaluation and Research (PEER) techniques, and perceptual mapping methods. Our sample includes reproductive age women (pregnant and not pregnant), their husbands, their mothers/in law and key stakeholders. After analyzing the results, we will hold a convening in India to collaboratively design the intervention. Following the intervention design, we will test components of the intervention, gather user feedback and tweak as necessary. Additionally, to improve adoption and sustainability of the intervention, we will conduct policy dialogue with stakeholders throughout the formative research. Impact: This study will contribute to the social norms and behavioral intervention research and inform policymakers about the value of adopting a socio-normative approach. PMID:29683135

A Summary of Proposed Changes to the Current ICARTT Format Standards and their Implications to Future Airborne Studies

NASA Astrophysics Data System (ADS)

Northup, E. A.; Kusterer, J.; Quam, B.; Chen, G.; Early, A. B.; Beach, A. L., III

2015-12-01

The current ICARTT file format standards were developed for the purpose of fulfilling the data management needs for the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) campaign in 2004. The goal of the ICARTT file format was to establish a common and simple to use data file format to promote data exchange and collaboration among science teams with similar science objectives. ICARTT has been the NASA standard since 2010, and is widely used by NOAA, NSF, and international partners (DLR, FAAM). Despite its level of acceptance, there are a number of issues with the current ICARTT format, especially concerning the machine readability. To enhance usability, the ICARTT Refresh Earth Science Data Systems Working Group (ESDSWG) was established to enable a platform for atmospheric science data producers, users (e.g. modelers) and data managers to collaborate on developing criteria for this file format. Ultimately, this is a cross agency effort to improve and aggregate the metadata records being produced. After conducting a survey to identify deficiencies in the current format, we determined which are considered most important to the various communities. Numerous recommendations were made to improve upon the file format while maintaining backward compatibility. The recommendations made to date and their advantages and limitations will be discussed.

Effect of microgravity on plant growth

NASA Technical Reports Server (NTRS)

Lewis, Norman G.

1994-01-01

The overall goal of this research is to determine the effect of microgravity proper on plant growth (metabolism and cell wall formation). In addressing this goal, the work conducted during this grant period was divided into three components: analyses of various plant tissues previously grown in space aboard MIR Space Station; analyses of wheat tissues grown on Shuttle flight STS-51; and Phenylpropanoid metabolism and plant cell wall synthesis (earth-based investigations).

Displaying uncertainty: investigating the effects of display format and specificity.

PubMed

Bisantz, Ann M; Marsiglio, Stephanie Schinzing; Munch, Jessica

2005-01-01

We conducted four studies regarding the representation of probabilistic information. Experiments 1 through 3 compared performance on a simulated stock purchase task, in which information regarding stock profitability was probabilistic. Two variables were manipulated: display format for probabilistic information (blurred and colored icons, linguistic phrases, numeric expressions, and combinations) and specificity level (in which the number and size of discrete steps into which the probabilistic information was mapped differed). Results indicated few performance differences attributable to display format; however, performance did improve with greater specificity. Experiment 4, in which participants generated membership functions corresponding to three display formats, found a high degree of similarity in functions across formats and participants and a strong relationship between the shape of the membership function and the intended meaning of the representation. These results indicate that participants can successfully interpret nonnumeric representations of uncertainty and can use such representations in a manner similar to the way numeric expressions are used in a decision-making task. Actual or potential applications of this research include the use of graphical representations of uncertainty in systems such as command and control and situation displays.

Using Qualitative Metasummary to Synthesize Qualitative and Quantitative Descriptive Findings

PubMed Central

Sandelowski, Margarete; Barroso, Julie; Voils, Corrine I.

2008-01-01

The new imperative in the health disciplines to be more methodologically inclusive has generated a growing interest in mixed research synthesis, or the integration of qualitative and quantitative research findings. Qualitative metasummary is a quantitatively oriented aggregation of qualitative findings originally developed to accommodate the distinctive features of qualitative surveys. Yet these findings are similar in form and mode of production to the descriptive findings researchers often present in addition to the results of bivariate and multivariable analyses. Qualitative metasummary, which includes the extraction, grouping, and formatting of findings, and the calculation of frequency and intensity effect sizes, can be used to produce mixed research syntheses and to conduct a posteriori analyses of the relationship between reports and findings. PMID:17243111

Integrating fluid dynamic and biologic effects on staphylococci bacteria biofilms

NASA Astrophysics Data System (ADS)

Sherman, Erica; Endres, Jennifer; Bayles, Kenneth; Wei, Timothy

2017-11-01

Staphylococcus aureus bacteria are able to form biofilms and distinctive tower structures that facilitate their ability to tolerate treatment and to spread within the human body. The formation of towers, which break off, get carried downstream and serve to initiate biofilms in other parts of the body are of particular interest here. In previous work on biofilm growth and evolution in steady, laminar microchannel flows, it has been established that tower formation occurs around a very limited range of applied shear stresses centered on 0.6 dynes/cm2. Quantifying cell density characteristics as a function of time during biofilm formation reveals indicators of tower development hours before towers actually form and become visible. The next step in this research is to explore biological factors that might explain why this specific shear is so important. Additional studies with mutants, e.g. ica-A, that have been tied to tower formation have been conducted. The shear dependence of these mutants and their correlation to the behavior of wild type S. aureus is examined.

Structure–property relationships in atomic-scale junctions: Histograms and beyond

DOE PAGES

Mark S. Hybertsen; Venkataraman, Latha

2016-03-03

Over the past 10 years, there has been tremendous progress in the measurement, modeling and understanding of structure–function relationships in single molecule junctions. Numerous research groups have addressed significant scientific questions, directed both to conductance phenomena at the single molecule level and to the fundamental chemistry that controls junction functionality. Many different functionalities have been demonstrated, including single-molecule diodes, optically and mechanically activated switches, and, significantly, physical phenomena with no classical analogues, such as those based on quantum interference effects. Experimental techniques for reliable and reproducible single molecule junction formation and characterization have led to this progress. In particular, themore » scanning tunneling microscope based break-junction (STM-BJ) technique has enabled rapid, sequential measurement of large numbers of nanoscale junctions allowing a statistical analysis to readily distinguish reproducible characteristics. Furthermore, harnessing fundamental link chemistry has provided the necessary chemical control over junction formation, enabling measurements that revealed clear relationships between molecular structure and conductance characteristics.« less

Structure–property relationships in atomic-scale junctions: Histograms and beyond

DOE Office of Scientific and Technical Information (OSTI.GOV)

Mark S. Hybertsen; Venkataraman, Latha

Over the past 10 years, there has been tremendous progress in the measurement, modeling and understanding of structure–function relationships in single molecule junctions. Numerous research groups have addressed significant scientific questions, directed both to conductance phenomena at the single molecule level and to the fundamental chemistry that controls junction functionality. Many different functionalities have been demonstrated, including single-molecule diodes, optically and mechanically activated switches, and, significantly, physical phenomena with no classical analogues, such as those based on quantum interference effects. Experimental techniques for reliable and reproducible single molecule junction formation and characterization have led to this progress. In particular, themore » scanning tunneling microscope based break-junction (STM-BJ) technique has enabled rapid, sequential measurement of large numbers of nanoscale junctions allowing a statistical analysis to readily distinguish reproducible characteristics. Furthermore, harnessing fundamental link chemistry has provided the necessary chemical control over junction formation, enabling measurements that revealed clear relationships between molecular structure and conductance characteristics.« less

The Pore Formation and Mobility Investigation: A Case Study for Conducting Research on the International Space Station in Support of Exploration

NASA Technical Reports Server (NTRS)

Grugel, R. N.; Luz, P.; Smith, G. A.; Spivey, R.; Mingo, C.; Jeter, L.; Volz, M. P.

2005-01-01

The Pore Formation and Mobility Investigation (PFMI) is being conducted in the Microgravity Science Glovebox (MSG) aboard the International Space Station (ISS) with the goal of understanding bubble generation and interactions during controlled directional solidification processing. Through the course of the experiments, beginning in September 2002, a number of key factors pertinent to solidification processing of materials in a microgravity environment have been directly observed, measured, and modeled. Though most experiments ran uninterrupted, on four separate occasions malfunctions to the PFMI hardware and software were experienced that required crew intervention, including in-space repair. Fortunately, each repair attempt was successful and restored the PFMI apparatus to a fully functional condition. Based on PFMI results and lessons learned, the intent of this presentation is to draw attention to the role ISS experiments/hardware can play in providing insight to potential fabrication processing techniques and repair scenarios that might arise during long duration space transport and/or on the lunar/Mars surface.

The Pore Formation and Mobility Investigation: A Summary of Conducted Research on the International Space Station

NASA Technical Reports Server (NTRS)

Grugel, R. N.; Luz, P.; Smith, G. A.; Spivey, R.; Jeter, L.; Volz, M. P.; Anilkumar, A.

2006-01-01

The Pore Formation and Mobility Investigation (PFMI) is being conducted in the Microgravity Science Glovebox (MSG) aboard the International Space Station (ISS) with the goal of understanding bubble generation and interactions during controlled directional solidification processing. Through the course of the experiments, beginning in September 2002, a number of key factors pertinent to solidification processing of materials in a microgravity environment have been directly observed, measured, and modeled. Though most experiments ran uninterrupted, on four separate occasions malfunctions to the PFMI hardware and software were experienced that required crew intervention, including in-space repair. Fortunately, each repair attempt was successful and restored the PFMI apparatus to a fully functional condition. Based on PFMI results and lessons learned, the intent of this presentation is to draw attention to the role ISS experiments/hardware can play in providing insight to potential fabrication processing techniques and repair scenarios that might arise during long duration space transport and/or on the lunar/Mars surface.

Using Photovoice to Understand Barriers to and Facilitators of Cardiovascular Health Among African American Adults and Adolescents, North Carolina, 2011-2012.

PubMed

Kowitt, Sarah; Woods-Jaeger, Briana; Lomas, Jesse; Taggart, Tamara; Thayer, Linden; Sutton, Sussie; Lightfoot, Alexandra F

2015-10-01

Cardiovascular disease is the leading cause of death in the United States, and mortality rates are higher among African Americans than among people of other races/ethnicities. We aimed to understand how African American adults and adolescents conceptualize cardiovascular health and perceive related barriers and facilitators. This qualitative study was conducted as formative research for a larger study, Heart Healthy Lenoir, which aimed to reduce cardiovascular disease disparities among African Americans in eastern North Carolina, part of the widely-known "stroke belt" that runs through the southeastern United States. Using photovoice, a community-based participatory research method, we conducted eight 90-minute photovoice sessions with 6 adults and 9 adolescents in Lenoir County, North Carolina. Topics for each discussion were selected by participants and reflected themes related to cardiovascular health promotion. All sessions were transcribed and coded using a data-driven, inductive approach. Participants conceptualized cardiovascular health to have mental, spiritual, and social health dimensions. Given these broad domains, participants acknowledged many ecological barriers to cardiovascular health; however, they also emphasized the importance of personal responsibility. Facilitators for cardiovascular health included using social health (eg, family/community relationships) and spiritual health dimensions (eg, understanding one's body and purpose) to improve health behaviors. The perspectives of African American adults and adolescents elicited through this formative research provided a strong foundation for Heart Healthy Lenoir's ongoing engagement of community members in Lenoir County and development and implementation of its intervention to prevent cardiovascular disease.

U.S. Geological Survey Geologic Carbon Sequestration Assessment

NASA Astrophysics Data System (ADS)

Warwick, P. D.; Blondes, M. S.; Brennan, S.; Corum, M.; Merrill, M. D.

2012-12-01

The Energy Independence and Security Act of 2007 authorized the U.S. Geological Survey (USGS) to conduct a national assessment of potential geological storage resources for carbon dioxide (CO2) in consultation with the U.S. Department of Energy (DOE), the U.S. Environmental Protection Agency (EPA) and State geological surveys. To conduct the assessment, the USGS developed a probability-based assessment methodology that was extensively reviewed by experts from industry, government and university organizations (Brennan et al., 2010, http://pubs.usgs.gov/of/2010/1127). The methodology is intended to be used at regional to sub-basinal scales and it identifies storage assessment units (SAUs) that are based on two depth categories below the surface (1) 3,000 to 13,000 ft (914 to 3,962 m), and (2) 13,000 ft (3,962 m) and greater. In the first category, the 3,000 ft (914 m) minimum depth of the storage reservoir ensures that CO2 is in a supercritical state to minimize the storage volume. The depth of 13,000 ft (3,962 m) represents maximum depths that are accessible with average injection pressures. The second category represents areas where a reservoir formation has potential storage at depths below 13,000 ft (3,962 m), although they are not accessible with average injection pressures; these are assessed as a separate SAU. SAUs are restricted to formation intervals that contain saline waters (total dissolved solids greater than 10,000 parts per million) to prevent contamination of protected ground water. Carbon dioxide sequestration capacity is estimated for buoyant and residual storage traps within the basins. For buoyant traps, CO2 is held in place in porous formations by top and lateral seals. For residual traps, CO2 is contained in porous formations as individual droplets held within pores by capillary forces. Preliminary geologic models have been developed to estimate CO2 storage capacity in approximately 40 major sedimentary basins within the United States. More than 200 SAUs have been identified within these basins. The results of the assessment are estimates of the technically accessible storage resources based on present-day geological and engineering technology related to CO2 injection into geologic formations; therefore the assessment is not of total in-place resources. Summary geologic descriptions of the evaluated basins and SAUs will be prepared, along with the national assessment results. During the coming year, these results will be released as USGS publications available from http://energy.usgs.gov. In support of these assessment activities, CO2 sequestration related research science is being conducted by members of the project. Results of our research will contribute to current and future CO2 storage assessments conducted by the USGS and other organizations. Research topics include: (a) geochemistry of CO2 interactions with subsurface environments; (b) subsurface petrophysical rock properties in relation to CO2 injection; (c) enhanced oil recovery and the potential for CO2 storage; (d) storage of CO2 in unconventional reservoirs (coal, shale, and basalt); (e) statistical aggregation of assessment results; and (f) potential risks of induced seismicity.

Small business innovation research program solicitation: Closing date July 16, 1990

NASA Technical Reports Server (NTRS)

1990-01-01

This is the eighth annual solicitation by NASA addressed to small business firms, inviting them to submit proposals for research, or research and development, activities in some of the science and engineering areas of interest to NASA. The solicitation describes the Small Business Innovative Research (SBIR) program, identifies eligibility requirements, outlines the required proposal format and content, states proposal preparation and submission requirements, describes the proposal evaluation and award selection process, and provides other information to assist those interested in participating in NASA's SBIR program. It also identifies the technical topics and subtopics for which SBIR proposals are solicited. These cover a broad range of current NASA interests, but do not necessarily include all areas in which NASA plans or currently conducts research. High-risk high pay-off innovations are desired.

Developing scientists in Hispanic substance use and health disparities research through the creation of a national mentoring network.

PubMed

Bazzi, Angela R; Mogro-Wilson, Cristina; Negi, Nalini Junko; Gonzalez, Jennifer M Reingle; Cano, Miguel Ángel; Castro, Yessenia; Cepeda, Alice

2017-01-01

Hispanics are disproportionately affected by substance use and related health harms yet remain underrepresented across scientific disciplines focused on researching and addressing these issues. An interdisciplinary network of scientists committed to fostering the development of social and biomedical researchers focused on Hispanic substance use and health disparities developed innovative mentoring and career development activities. We conducted a formative evaluation study using anonymous membership and conference feedback data to describe specific mentoring and career development activities developed within the national network. Successful mentoring initiatives and career development activities were infused with cultural and community values supportive of professional integration and persistence. Mentoring initially occurred within an annual national conference and was then sustained throughout the year through formal training programs and informal mentoring networks. Although rigorous evaluation is needed to determine the success of these strategies in fostering long-term career development among scientists conducting Hispanic health and substance use research, this innovative model may hold promise for other groups committed to promoting career development and professional integration and persistence for minority (and non-minority) scientists committed to addressing health disparities.

Small business innovation research: Program solicitation

NASA Technical Reports Server (NTRS)

1989-01-01

This, the seventh annual SBIR solicitation by NASA, describes the program, identifies eligibility requirements, outlines the required proposal format and content, states proposal preparation and submission requirements, describes the proposal evaluation and award selection process, and provides other information to assist those interested in participating in NASA's SBIR program. It also identifies the Technical Topics and Subtopics in which SBIR Phase 1 proposals are solicited in 1989. These Topics and Subtopics cover a broad range of current NASA interests, but do not necessarily include all areas in which NASA plans or currently conducts research. High-risk high pay-off innovations are desired.

2017 LLNL Nuclear Forensics Summer Internship Program

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zavarin, Mavrik

The Lawrence Livermore National Laboratory (LLNL) Nuclear Forensics Summer Internship Program (NFSIP) is designed to give graduate students an opportunity to come to LLNL for 8-10 weeks of hands-on research. Students conduct research under the supervision of a staff scientist, attend a weekly lecture series, interact with other students, and present their work in poster format at the end of the program. Students can also meet staff scientists one-on-one, participate in LLNL facility tours (e.g., the National Ignition Facility and Center for Accelerator Mass Spectrometry), and gain a better understanding of the various science programs at LLNL.

Archaeological Survey at Fort Hood, Texas Fiscal Year 1987: The MCA range Construction, Pidcoke Land Exchange, and Phantom Range Projects. Archeological Resource Management Series Research Report Number 23

DTIC Science & Technology

1991-01-01

ORGANIZATION NAME AND ADORES$ 10. PROGRAM ELEMENT. PROJECT. TASK AREA G WORK UNIT NUMBERS Archeological Research Laboratory Texas A&M University College Station...V’Avail and/or • G O8IRZ This report summarizes the results of an archeological survey conducted for the U.S. Army at Fort Hood, Texas, by personnel from...it forms numerous round-topped buttes and outliers where the Edwards cap is eroded away. Overly-,, g the Comanche Peak formation is the Edwards

NASA LaRC FIB Multi-Channel Anemometry Recording System-User's Manual. [conducted at the Langley Low-Turbulence Pressure Tunnel

NASA Technical Reports Server (NTRS)

Johnson, Sherylene (Compiler); Bertelrud, Arild (Compiler); Anders, J. B. (Technical Monitor)

2002-01-01

This report is part of a series of reports describing a flow physics high-lift experiment conducted in NASA Langley Research Center's Low-Turbulence Pressure Tunnel (LTPT) in 1996. The anemometry system used in the experiment was originally designed for and used in flight tests with NASA's Boeing 737 airplane. Information that may be useful in the evaluation or use of the experimental data has been compiled. The report also contains details regarding record structure, how to read the embedded time code, as well as the output file formats used in the code reading the binary data.

Nonaqueous polypyrrole colloids

DOEpatents

Armes, Steven P.; Aldissi, Mahmoud

1991-01-01

Processable conductive polymers including an oxidized, polymerized aromatic heterocyclic monomer, e.g., pyrrole, an stabilizing effective amount of a poly(vinyl acetate) and dopant anions, and a process of preparing said processable conductive polymers directly in a nonaqueous medium such as methyl acetate, methyl formate, ethyl formate, and propyl formate are disclosed.

Combating Frosting with Joule-Heated Liquid-Infused Superhydrophobic Coatings.

PubMed

Elsharkawy, Mohamed; Tortorella, Domenico; Kapatral, Shreyas; Megaridis, Constantine M

2016-05-03

Frost formation is omnipresent when suitable environmental conditions are met. A good portion of research on combating frost formation has revolved around the passive properties of superhydrophobic (SHPO) and slippery lubricant-impregnated porous (SLIP) surfaces. Despite much progress, the need for surfaces that can effectively combat frost formation over prolonged periods still remains. In this work, we report, for the first time, the use of electrically conductive SHPO/SLIP surfaces for active mitigation of frost formation. First, we demonstrate the failure of these surfaces to passively avert prolonged (several hours) frosting. Next, we make use of their electroconductive property for active Joule heating, which results in the removal of any formed frost. We study the role of the impregnating lubricant in the heat transfer across the interface, the surface, and the ambient. We show that, even though the thermal properties of the impregnating lubricant may vary drastically, the lubricant type does not noticeably affect the defrosting behavior of the surface. We attribute this outcome to the dominant thermal resistance of the thick frost layer formed on the cooled surface. We support this claim by drawing parallels between the present system and heat transfer through a one-dimensional (1D) composite medium, and solving the appropriate transient transport equations. Lastly, we propose periodic thermal defrosting for averting frost formation altogether. This methodology utilizes the coating's passive repellent capabilities, while eliminating the dominant effect of thick deposited frost layers. The periodic heating approach takes advantage of lubricants with higher thermal conductivities, which effectively enhance heat transfer through the porous multiphase surface that forms the first line of defense against frosting.

Using theory-based messages to motivate U.S. pregnant women to prevent cytomegalovirus infection: results from formative research.

PubMed

Levis, Denise M; Hillard, Christina L; Price, Simani M; Reed-Gross, Erika; Bonilla, Erika; Amin, Minal; Stowell, Jennifer D; Clark, Rebekah; Johnson, Delaney; Mask, Karen; Carpentieri, Cynthia; Cannon, Michael J

2017-12-14

An estimated 1 in 150 infants is born each year with congenital cytomegalovirus (CMV); nearly 1 in 750 suffers permanent disabilities. Congenital CMV is the result of a pregnant woman becoming infected with CMV. Educating pregnant women about CMV is currently the best approach to prevention. Limited research is available on how to effectively communicate with women about CMV. We conducted formative research on fear appeals theory-based messages about CMV and prevention with U.S. women. Fear appeal theories suggest that message recipients will take action if they feel fear. First, we conducted in-depth interviews (N = 32) with women who had young children who tested positive for CMV. Second, we conducted eight focus groups (N = 70) in two phases and two cities (Phase 2: Atlanta, GA; Phase 3: San Diego, CA) with pregnant women and non-pregnant women who had young children. Few participants knew about CMV before the focus groups. Participants reviewed and gave feedback on messages created around fear appeals theory-based communication concepts. The following concepts were tested in one or more of the three phases of research: CMV is severe, CMV is common, CMV is preventable, CMV preventive strategies are similar to other behavior changes women make during pregnancy, CMV preventive strategies can be incorporated in moderation to reduce exposure, and CMV is severe but preventable. Participants recommended communicating that CMV is common by using prevalence ratios (e.g., 1 in 150) or comparing CMV to other well-known disabilities. To convey the severity of CMV, participants preferred stories about CMV along with prevention strategies. Participants also welcomed prevention strategies when it included a message about risk reduction. In general, participants said messages were motivating, even if they felt that it could be difficult to make certain behavior changes. Findings from this research can contribute to future efforts to educate pregnant women about CMV, especially regarding use of fear appeals-based messages. Pregnant women may face certain challenges to practicing prevention strategies but, overall, are motivated make changes to increase their chances of having a healthy baby.

Development of a Nutrition Education Intervention for Food Bank Clients.

PubMed

Dave, Jayna M; Thompson, Deborah I; Svendsen-Sanchez, Ann; McNeill, Lorna Haughton; Jibaja-Weiss, Maria

2017-03-01

The focus of this article is the development of a nutrition education intervention for food bank clients. Formative research using mixed-methods (qualitative and quantitative) and community-based participatory research principles was conducted to assess the nutrition education needs of clients obtaining service from the Houston Food Bank (HFB). Participants were HFB and pantry staff and clients. Interview data were coded and analyzed using grounded theory approach. Themes were then identified. Quantitative data were analyzed for frequencies and descriptives. Data were used to tailor the curriculum to the target population. Six HFB staff, 49 pantry staff from 17 pantries, and 54 clients from 10 pantries participated in interviews and focus groups and completed questionnaires. The participants provided opinion on the current nutrition education provided via the food bank and made suggestions on strategies for development of an intervention. Their feedback was used to develop the six-session intervention curriculum to be delivered over 6 months. This research provides evidence that it is critical for members of the target audience be included in formative research to develop behavior change programs that are relevant and appealing and target their needs and interests.

Distance art groups for women with breast cancer: guidelines and recommendations.

PubMed

Collie, Kate; Bottorff, Joan L; Long, Bonita C; Conati, Cristina

2006-08-01

To overcome barriers that prevent women with breast cancer from attending support groups, innovative formats and modes of delivery both need to be considered. The present study was part of an interdisciplinary program of research in which researchers from counseling psychology, psycho-oncology, nursing, computer science, and fine arts have explored art making as an innovative format and telehealth as a mode of delivery. For this study, we conducted focus groups and interviews with 25 people with expertise about breast cancer, art, art therapy, and distance delivery of mental health services to generate guidelines for distance art-based psychosocial support services to women with breast cancer. A qualitative analysis of the focus group and interview data yielded guidelines for developers and facilitators of distance art groups for women with breast cancer pertaining to (a) emotional expression, (b) emotional support, (c) emotional safety, and (d) accommodating individual differences, plus special considerations for art therapy groups. Further research is needed pertaining to the use of computers, involvement of art therapists, and screening out vulnerable clients.

Comparison of Alternative Evidence Summary and Presentation Formats in Clinical Guideline Development: A Mixed-Method Study

PubMed Central

Opiyo, Newton; Shepperd, Sasha; Musila, Nyokabi; Allen, Elizabeth; Nyamai, Rachel; Fretheim, Atle; English, Mike

2013-01-01

Background Best formats for summarising and presenting evidence for use in clinical guideline development remain less well defined. We aimed to assess the effectiveness of different evidence summary formats to address this gap. Methods Healthcare professionals attending a one-week Kenyan, national guideline development workshop were randomly allocated to receive evidence packaged in three different formats: systematic reviews (SRs) alone, systematic reviews with summary-of-findings tables, and ‘graded-entry’ formats (a ‘front-end’ summary and a contextually framed narrative report plus the SR). The influence of format on the proportion of correct responses to key clinical questions, the primary outcome, was assessed using a written test. The secondary outcome was a composite endpoint, measured on a 5-point scale, of the clarity of presentation and ease of locating the quality of evidence for critical neonatal outcomes. Interviews conducted within two months following completion of trial data collection explored panel members’ views on the evidence summary formats and experiences with appraisal and use of research information. Results 65 (93%) of 70 participants completed questions on the prespecified outcome measures. There were no differences between groups in the odds of correct responses to key clinical questions. ‘Graded-entry’ formats were associated with a higher mean composite score for clarity and accessibility of information about the quality of evidence for critical neonatal outcomes compared to systematic reviews alone (adjusted mean difference 0.52, 95% CI 0.06 to 0.99). There was no difference in the mean composite score between SR with SoF tables and SR alone. Findings from interviews with 16 panelists indicated that short narrative evidence reports were preferred for the improved clarity of information presentation and ease of use. Conclusions Our findings suggest that ‘graded-entry’ evidence summary formats may improve clarity and accessibility of research evidence in clinical guideline development. Trial Registration Controlled-Trials.com ISRCTN05154264 PMID:23372813

Star Formation Properties of Irregular Galaxies

NASA Astrophysics Data System (ADS)

Hunter, D. A.; Elmegreen, B. G.

2003-12-01

What regulates star formation in gas-rich dwarf galaxies on global and local scales? To address this question, we have conducted a survey of a large sample of reasonably normal, relatively nearby, non-interacting galaxies without spiral arms. The sample includes 94 Im galaxies, 26 Blue Compact Dwarfs, and 20 Sm systems. The data consist of UBV and Hα images for the entire sample, and JHK images, HI maps, CO observations, and HII region spectrophotometry for a sub-sample. The Hα , UBV, and JHK image sets act as probes of star formation on three different times scales: Hα images trace the most recent star formation (≤10 Myrs) through the ionization of natal clouds by the short-lived massive stars; UBV, while a more complicated clue, integrates over the past Gyr; and JHK integrates over the lifetime of the galaxy where even in Im galaxies global JHK colors are characteristic of old stellar populations. These data are being used to determine the nature and distribution of the star formation activity, to characterize the interstellar medium out of which the clouds and stars are forming, and to develop models that describe the important processes that drive star formation in these tiny systems. Here we present the Hα data: integrated star formation rates, azimuthally-averaged Hα surface brightnesses, and extents of star formation, and explore the relationship of the star formation properties to other integrated parameters of the galaxies. One TI CCD used in this work was provided to Lowell by the National Science Foundation and another was on loan from the U. S. Naval Observatory in Flagstaff. The Hα filters were purchased with funds provided by a Small Research Grant from the American Astronomical Society, National Science Foundation grant AST-9022046, and grant 960355 from JPL. Funding for carrying out this work was provided by the Lowell Research Fund and by the National Science Foundation through grants AST-0204922 to DAH and AST-0205097 to BGE.

Managing fear in public health campaigns: a theory-based formative evaluation process.

PubMed

Cho, Hyunyi; Witte, Kim

2005-10-01

The HIV/AIDS infection rate of Ethiopia is one of the world's highest. Prevention campaigns should systematically incorporate and respond to at-risk population's existing beliefs, emotions, and perceived barriers in the message design process to effectively promote behavior change. However, guidelines for conducting formative evaluation that are grounded in proven risk communication theory and empirical data analysis techniques are hard to find. This article provides a five-step formative evaluation process that translates theory and research for developing effective messages for behavior change. Guided by the extended parallel process model, the five-step process helps message designers manage public's fear surrounding issues such as HIV/AIDS. An entertainment education project that used the process to design HIV/AIDS prevention messages for Ethiopian urban youth is reported. Data were collected in five urban regions of Ethiopia and analyzed according to the process to develop key messages for a 26-week radio soap opera.

A framework for evaluating the formation, implementation, and performance of accountable care organizations.

PubMed

Fisher, Elliott S; Shortell, Stephen M; Kreindler, Sara A; Van Citters, Aricca D; Larson, Bridget K

2012-11-01

The implementation of accountable care organizations (ACOs), a new health care payment and delivery model designed to improve care and lower costs, is proceeding rapidly. We build on our experience tracking early ACOs to identify the major factors-such as contract characteristics; structure, capabilities, and activities; and local context-that would be likely to influence ACO formation, implementation, and performance. We then propose how an ACO evaluation program could be structured to guide policy makers and payers in improving the design of ACO contracts, while providing insights for providers on approaches to care transformation that are most likely to be successful in different contexts. We also propose key activities to support evaluation of ACOs in the near term, including tracking their formation, developing a set of performance measures across all ACOs and payers, aggregating those performance data, conducting qualitative and quantitative research, and coordinating different evaluation activities.

A Meta-analytic Comparison of Face-to-Face and Online Delivery in Ethics Instruction: The Case for a Hybrid Approach.

PubMed

Todd, E Michelle; Watts, Logan L; Mulhearn, Tyler J; Torrence, Brett S; Turner, Megan R; Connelly, Shane; Mumford, Michael D

2017-12-01

Despite the growing body of literature on training in the responsible conduct of research, few studies have examined the effectiveness of delivery formats used in ethics courses (i.e., face-to-face, online, hybrid). The present effort sought to address this gap in the literature through a meta-analytic review of 66 empirical studies, representing 106 ethics courses and 10,069 participants. The frequency and effectiveness of 67 instructional and process-based content areas were also assessed for each delivery format. Process-based contents were best delivered face-to-face, whereas contents delivered online were most effective when restricted to compliance-based instructional contents. Overall, hybrid courses were found to be most effective, suggesting that ethics courses are best delivered using a blend of formats and content areas. Implications and recommendations for future development of ethics education courses in the sciences are discussed.

Digital Seismic-Reflection Data from Eastern Rhode Island Sound and Vicinity, 1975-1980

USGS Publications Warehouse

McMullen, K.Y.; Poppe, L.J.; Soderberg, N.K.

2009-01-01

During 1975 and 1980, the U.S. Geological Survey (USGS) conducted two seismic-reflection surveys in Rhode Island Sound (RIS) aboard the research vessel Asterias: cruise ASTR75-June surveyed eastern RIS in 1975 and cruise AST-80-6B surveyed southern RIS in 1980. Data from these surveys were recorded in analog form and archived at the USGS Woods Hole Coastal and Marine Science Center's Data Library. In response to recent interest in the geology of RIS and in an effort to make the data more readily accessible while preserving the original paper records, the seismic data from these cruises were scanned and converted to black and white Tagged Image File Format and grayscale Portable Network Graphics images and SEG-Y data files. Navigation data were converted from U.S. Coast Guard Long Range Aids to Navigation time delays to latitudes and longitudes that are available in Environmental Systems Research Institute, Inc., shapefile format and as eastings and northings in space-delimited text format. This report complements two others that contain analog seismic-reflection data from RIS (McMullen and others, 2009) and Long Island and Block Island Sounds (Poppe and others, 2002) and were converted into digital form.

Flow and Transport in Highly Heterogeneous Porous Formations: Numerical Experiments Performed Using the Analytic Element Method

NASA Astrophysics Data System (ADS)

Jankovic, I.

2002-05-01

Flow and transport in porous formations are analyzed using numerical simulations. Hydraulic conductivity is treated as a spatial random function characterized by a probability density function and a two-point covariance function. Simulations are performed for a multi-indicator conductivity structure developed by Gedeon Dagan (personal communication). This conductivity structure contains inhomogeneities (inclusions) of elliptical and ellipsoidal geometry that are embedded in a homogeneous background. By varying the distribution of sizes and conductivities of inclusions, any probability density function and two-point covariance may be reproduced. The multi-indicator structure is selected since it yields simple approximate transport solutions (Aldo Fiori, personal communication) and accurate numerical solutions (based on the Analytic Element Method). The dispersion is examined for two conceptual models. Both models are based on the multi-indicator conductivity structure. The first model is designed to examine dispersion in aquifers with continuously varying conductivity. The inclusions in this model cover as much area/volume of the porous formation as possible. The second model is designed for aquifers that contain clay/sand/gravel lenses embedded in otherwise homogeneous background. The dispersion in both aquifer types is simulated numerically. Simulation results are compared to those obtained using simple approximate solutions. In order to infer transport statistics that are representative of an infinite domain using the numerical experiments, the inclusions are placed in a domain that was shaped as a large ellipse (2D) and a large spheroid (3D) that were submerged in an unbounded homogeneous medium. On a large scale, the large body of inclusions behaves like a single large inhomogeneity. The analytic solution for a uniform flow past the single inhomogeneity of such geometry yields uniform velocity inside the domain. The velocity differs from that at infinity and can be used to infer the effective conductivity of the medium. As many as 100,000 inhomogeneities are placed inside the domain for 2D simulations. Simulations in 3D were limited to 50,000 inclusions. A large number of simulations was conducted on a massively parallel supercomputer cluster at the Center for Computational Research, University at Buffalo. Simulations range from mildly heterogeneous formations to highly heterogeneous formations (variance of the logarithm of conductivity equal to 10) and from sparsely populated systems to systems where inhomogeneities cover 95% of the volume. Particles are released and tracked inside the core of constant mean velocity. Following the particle tracking, various medium, flow, and transport statistics are computed. These include: spatial moments of particle positions, probability density function of hydraulic conductivity and each component of velocity, their two-point covariance function in the direction of flow and normal to it, covariance of Lagrangean velocities, and probability density function of travel times to various break-through locations. Following the analytic nature of the flow solution, all the results are presented in dimensionless forms. For example, the dispersion coefficients are made dimensionless with respect to the mean velocity and size of inhomogeneities. Detailed results will be presented and compared to well known first-order results and the results that are based on simple approximate transport solutions of Aldo Fiori.

Continuing oversight through site monitoring: experiences of an institutional ethics committee in an Indian tertiary-care hospital.

PubMed

Shetty, Yashashri C; Marathe, Padmaja; Kamat, Sandhya; Thatte, Urmila

2012-01-01

WHO-TDR and the Indian Council of Medical Research recommend site visits by institutional ethics committees (IECs) for continued oversight, to ensure the ethical conduct of research. Our IEC conducted seven site visits in 2008-2009 using a standardised format to monitor adherence to protocol and the informed consent process. The study identified issues related to informed consent (6/7), deviation from protocol (5/7), reporting of study progress to the IEC (3/7), recruiting additional participants without IEC approval (2/7), reporting of serious adverse events (1/7), investigator's lack of awareness of protocol and the informed consent document (2/7) and other findings. Investigators were informed about the findings and were asked to submit an explanation. The IEC issued warnings about not repeating such lapses in the future (5/7), restricted enrollment of new participants (2/7), recommended continued good clinical practice training to the study team (4/7), advised the recruitment of additional study coordinators (2/7), and requested the submission of adverse event reports (2/7) or sponsors' audit reports (2/7). Our study showed that the ethical conduct of studies can be ensured by conducting routine site monitoring.

Successful Air Force Source Selections Start with an Effective Empowered Team

DTIC Science & Technology

responsibilities of the team that will conduct a source selection, there is less guidance and focus how to create an effective source selection team and...empower that team to successfully complete a source selection. This purpose of this research was to determine if an increased focus on the formation and...empowerment of source selection teams and not just processes and procedures contribute to the efficiency and success of Air Force source selections

Ionic conduction in sodium azide under high pressure: Experimental and theoretical approaches

NASA Astrophysics Data System (ADS)

Wang, Qinglin; Ma, Yanzhang; Sang, Dandan; Wang, Xiaoli; Liu, Cailong; Hu, Haiquan; Wang, Wenjun; Zhang, Bingyuan; Fan, Quli; Han, Yonghao; Gao, Chunxiao

2018-04-01

Alkali metal azides can be used as starting materials for the synthesis of polymeric nitrogen, a potential material of high energy density. In this letter, we report the ionic transport behavior in sodium azide under high pressure by in situ impedance spectroscopy and density functional theory calculations. The ionic transportation consists of ion transfer and Warburg diffusion processes. The ionic migration channels and barrier energy were given for the high-pressure phases. The enhanced ionic conductivity of the γ phase with pressure is because of the formation of space charge regions in the grain boundaries. This ionic conduction and grain boundary effect in NaN3 under pressures could shed light on the better understanding of the conduction mechanism of alkali azides and open up an area of research for polymeric nitrogen in these compounds and other high-energy-density polynitrides.

Space as a Tool for Astrobiology: Review and Recommendations for Experimentations in Earth Orbit and Beyond

NASA Astrophysics Data System (ADS)

Cottin, Hervé; Kotler, Julia Michelle; Billi, Daniela; Cockell, Charles; Demets, René; Ehrenfreund, Pascale; Elsaesser, Andreas; d'Hendecourt, Louis; van Loon, Jack J. W. A.; Martins, Zita; Onofri, Silvano; Quinn, Richard C.; Rabbow, Elke; Rettberg, Petra; Ricco, Antonio J.; Slenzka, Klaus; de la Torre, Rosa; de Vera, Jean-Pierre; Westall, Frances; Carrasco, Nathalie; Fresneau, Aurélien; Kawaguchi, Yuko; Kebukawa, Yoko; Nguyen, Dara; Poch, Olivier; Saiagh, Kafila; Stalport, Fabien; Yamagishi, Akihiko; Yano, Hajime; Klamm, Benjamin A.

2017-07-01

The space environment is regularly used for experiments addressing astrobiology research goals. The specific conditions prevailing in Earth orbit and beyond, notably the radiative environment (photons and energetic particles) and the possibility to conduct long-duration measurements, have been the main motivations for developing experimental concepts to expose chemical or biological samples to outer space, or to use the reentry of a spacecraft on Earth to simulate the fall of a meteorite. This paper represents an overview of past and current research in astrobiology conducted in Earth orbit and beyond, with a special focus on ESA missions such as Biopan, STONE (on Russian FOTON capsules) and EXPOSE facilities (outside the International Space Station). The future of exposure platforms is discussed, notably how they can be improved for better science return, and how to incorporate the use of small satellites such as those built in cubesat format.

Low Cost CaTiO3 Perovskite Synthesized from Scallop (Anadara granosa) Shell as Antibacterial Ceramic Material

NASA Astrophysics Data System (ADS)

Fatimah, Is; Nur Ilahi, Rico; Pratami, Rismayanti

2018-01-01

Research on perovskite CaTiO3 synthesis from scallop (Anadara granosa) shell and its test as material for antibacterial ceramic application have been conducted. The synthesis was performed by calcium extraction from the scallop shell followed by solid-solid reaction of obtained calcium with TiO2. Physicochemical character of the perovskite wasstudied by measurement of crystallinity using x-ray diffraction (XRD), diffuse-reflectance UV Visible spectrophotometry, scanning electrone microscope-energy dispersive x-ray (SEM-EDX) and Fourier-Transform InfraRed. Considering the future application of the perovskite as antibacterial agent, laboratory test of the peroskite as material in antibacterial ceramic preparation was also conducted. Result of research indicated that perovskite formation was obtained and the material demonstrated photocatalytic activity as identified by band gap energy (Eg) value. The significant activity was also reflected by the antibacterial action of formed ceramic.

A framework for conducting follow-up meetings with parents after a child's death in the pediatric intensive care unit*

PubMed Central

Eggly, Susan; Berger, John; Zimmerman, Jerry; Anand, Kanwaljeet J. S.; Newth, Christopher J. L.; Harrison, Rick; Carcillo, Joseph; Dean, J. Michael; Willson, Douglas F.; Nicholson, Carol

2012-01-01

Objective To describe a framework to assist pediatric intensive care unit physicians in conducting follow-up meetings with parents after their child's death. Many childhood deaths occur in pediatric intensive care units. Parents of children who die in pediatric intensive care units often desire a follow-up meeting with the physician(s) who cared for their child. Data Sources Prior research conducted by the Collaborative Pediatric Critical Care Research Network on the experiences and perspectives of bereaved parents and pediatric intensive care unit physicians regarding the desirability, content, and conditions of follow-up meetings. Results The framework includes suggestions for inviting families to follow-up meetings (i.e., developing an institutional system, invitation timing, and format); preparing for the meeting (i.e., assessing family preferences; determining location, attendees, and discussion topics; reviewing medical and psychosocial history); structure of the meeting (i.e., opening, closing, and developing a meeting agenda); communicating effectively during the meeting; and follow-up for both parents and physicians. Conclusion This framework is based on the experience and perspectives of bereaved parents and pediatric intensive care unit physicians. Future research should be conducted to determine the extent to which physician-parent follow-up meetings provide a benefit to parents, families, physicians, and other healthcare providers participating in these encounters. PMID:20625339

The Microbe Directory: An annotated, searchable inventory of microbes' characteristics.

PubMed

Shaaban, Heba; Westfall, David A; Mohammad, Rawhi; Danko, David; Bezdan, Daniela; Afshinnekoo, Ebrahim; Segata, Nicola; Mason, Christopher E

2018-01-05

The Microbe Directory is a collective research effort to profile and annotate more than 7,500 unique microbial species from the MetaPhlAn2 database that includes bacteria, archaea, viruses, fungi, and protozoa. By collecting and summarizing data on various microbes' characteristics, the project comprises a database that can be used downstream of large-scale metagenomic taxonomic analyses, allowing one to interpret and explore their taxonomic classifications to have a deeper understanding of the microbial ecosystem they are studying. Such characteristics include, but are not limited to: optimal pH, optimal temperature, Gram stain, biofilm-formation, spore-formation, antimicrobial resistance, and COGEM class risk rating. The database has been manually curated by trained student-researchers from Weill Cornell Medicine and CUNY-Hunter College, and its analysis remains an ongoing effort with open-source capabilities so others can contribute. Available in SQL, JSON, and CSV (i.e. Excel) formats, the Microbe Directory can be queried for the aforementioned parameters by a microorganism's taxonomy. In addition to the raw database, The Microbe Directory has an online counterpart ( https://microbe.directory/) that provides a user-friendly interface for storage, retrieval, and analysis into which other microbial database projects could be incorporated. The Microbe Directory was primarily designed to serve as a resource for researchers conducting metagenomic analyses, but its online web interface should also prove useful to any individual who wishes to learn more about any particular microbe.

Advanced Horizontal Well Recirculation Systems for Geothermal Energy Recovery in Sedimentary and Crystalline Formations

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bruno, Mike S.; Detwiler, Russell L.; Lao, Kang

2012-12-13

There is increased recognition that geothermal energy resources are more widespread than previously thought, with potential for providing a significant amount of sustainable clean energy worldwide. Recent advances in drilling, completion, and production technology from the oil and gas industry can now be applied to unlock vast new geothermal resources, with some estimates for potential electricity generation from geothermal energy now on the order of 2 million megawatts. The primary objectives of this DOE research effort are to develop and document optimum design configurations and operating practices to produce geothermal power from hot permeable sedimentary and crystalline formations using advancedmore » horizontal well recirculation systems. During Phase I of this research project Terralog Technologies USA and The University of California, Irvine (UCI), have completed preliminary investigations and documentation of advanced design concepts for paired horizontal well recirculation systems, optimally configured for geothermal energy recovery in permeable sedimentary and crystalline formations of varying structure and material properties. We have also identified significant geologic resources appropriate for application of such technology. The main challenge for such recirculation systems is to optimize both the design configuration and the operating practices for cost-effective geothermal energy recovery. These will be strongly influenced by sedimentary formation properties, including thickness and dip, temperature, thermal conductivity, heat capacity, permeability, and porosity; and by working fluid properties.« less

Hybrid 3D printing and electrodeposition approach for controllable 3D alginate hydrogel formation.

PubMed

Shang, Wanfeng; Liu, Yanting; Wan, Wenfeng; Hu, Chengzhi; Liu, Zeyang; Wong, Chin To; Fukuda, Toshio; Shen, Yajing

2017-06-07

Calcium alginate hydrogels are widely used as biocompatible materials in a substantial number of biomedical applications. This paper reports on a hybrid 3D printing and electrodeposition approach for forming 3D calcium alginate hydrogels in a controllable manner. Firstly, a specific 3D hydrogel printing system is developed by integrating a customized ejection syringe with a conventional 3D printer. Then, a mixed solution of sodium alginate and CaCO 3 nanoparticles is filled into the syringe and can be continuously ejected out of the syringe nozzle onto a conductive substrate. When applying a DC voltage (∼5 V) between the substrate (anode) and the nozzle (cathode), the Ca 2+ released from the CaCO 3 particles can crosslink the alginate to form calcium alginate hydrogel on the substrate. To elucidate the gel formation mechanism and better control the gel growth, we can further establish and verify a gel growth model by considering several key parameters, i.e., applied voltage and deposition time. The experimental results indicate that the alginate hydrogel of various 3D structures can be formed by controlling the movement of the 3D printer. A cell viability test is conducted and shows that the encapsulated cells in the gel can maintain a high survival rate (∼99% right after gel formation). This research establishes a reliable method for the controllable formation of 3D calcium alginate hydrogel, exhibiting great potential for use in basic biology and applied biomedical engineering.

Formative Research in Educational Media.

ERIC Educational Resources Information Center

Hodapp, Timothy

This paper distinguishes between basic research, applied research, and evaluation. Evaluation is broken down into two types: summative and formative. The limitations of formative research are presented, followed by a discussion of the value of the formative researcher participating in the product planning process. The types of data which formative…

Trust and Credibility in Web-Based Health Information: A Review and Agenda for Future Research

PubMed Central

2017-01-01

Background Internet sources are becoming increasingly important in seeking health information, such that they may have a significant effect on health care decisions and outcomes. Hence, given the wide range of different sources of Web-based health information (WHI) from different organizations and individuals, it is important to understand how information seekers evaluate and select the sources that they use, and more specifically, how they assess their credibility and trustworthiness. Objective The aim of this study was to review empirical studies on trust and credibility in the use of WHI. The article seeks to present a profile of the research conducted on trust and credibility in WHI seeking, to identify the factors that impact judgments of trustworthiness and credibility, and to explore the role of demographic factors affecting trust formation. On this basis, it aimed to identify the gaps in current knowledge and to propose an agenda for future research. Methods A systematic literature review was conducted. Searches were conducted using a variety of combinations of the terms WHI, trust, credibility, and their variants in four multi-disciplinary and four health-oriented databases. Articles selected were published in English from 2000 onwards; this process generated 3827 unique records. After the application of the exclusion criteria, 73 were analyzed fully. Results Interest in this topic has persisted over the last 15 years, with articles being published in medicine, social science, and computer science and originating mostly from the United States and the United Kingdom. Documents in the final dataset fell into 3 categories: (1) those using trust or credibility as a dependent variable, (2) those using trust or credibility as an independent variable, and (3) studies of the demographic factors that influence the role of trust or credibility in WHI seeking. There is a consensus that website design, clear layout, interactive features, and the authority of the owner have a positive effect on trust or credibility, whereas advertising has a negative effect. With regard to content features, authority of the author, ease of use, and content have a positive effect on trust or credibility formation. Demographic factors influencing trust formation are age, gender, and perceived health status. Conclusions There is considerable scope for further research. This includes increased clarity of the interaction between the variables associated with health information seeking, increased consistency on the measurement of trust and credibility, a greater focus on specific WHI sources, and enhanced understanding of the impact of demographic variables on trust and credibility judgments. PMID:28630033

Photochemical influences on the air-water exchange of mercury

NASA Astrophysics Data System (ADS)

Vette, Alan Frederic

The formation of dissolved gaseous mercury (DGM) in natural waters is an important component in the biogeochemical cycle of mercury (Hg). The predominate form of DGM in natural waters, gaseous elemental Hg (Hg0), may be transferred from the water to the atmosphere. Gas exchange may reduce the amount of Hg available for methyl-Hg formation, the most toxic form of Hg that bioaccumulates in the food chain. Determining the mechanisms and rates of DGM formation is essential in understanding the fate and cycling of Hg in aquatic ecosystems. Field and laboratory experiments were conducted to evaluate the effect of light on DGM formation in surface waters containing different levels of dissolved organic carbon (DOC). Water samples collected from the Tahqwamenon River and Whitefish Bay on Lake Superior were amended with divalent Hg (Hg2+) and irradiated under a variety of reaction conditions to determine rates of DGM formation. The water samples were also analyzed for various Hg species (total, filtered, easily reducible and dissolved gaseous Hg), DOC and light attenuation. Additional field studies were conducted on Lake Michigan to measure gaseous Hg in air and water. These data were used to develop a mechanistic model to estimate air-water exchange of gaseous Hg. This research found that photochemical formation of DGM was affected by penetration of UV A radiation (320-400 nm). Formation of DGM was enhanced at higher DOC concentrations, indicating DOC photosensitized the reduction of Hg2+ to Hg0. Wavelength studies determined that formation of DGM was significantly reduced in the absence of UV A. Field studies showed DGM concentrations were highest near the water surface and peaked at mid-day, indicating a photo-induced source of DGM. The conversion of reducible Hg2+ to Hg0 was suppressed in high DOC waters where UV A penetration was limited. The mechanistic model predicted similar DGM concentrations to the observed values and demonstrated that deposition and emission fluxes of gaseous Hg were similar in Lake Michigan. In addition, deposition and emission fluxes of gaseous Hg were similar to Hg loadings by precipitation. The formation and emission of DGM from surface waters represents a significant contribution to the Hg cycle in aquatic ecosystems.

High performance low cost interconnections for flip chip attachment with electrically conductive adhesive. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

NONE

1998-05-01

This final report is a compilation of final reports from each of the groups participating in the program. The main three groups involved in this effort are the Thomas J. Watson Research Center of IBM Corporation in Yorktown Heights, New York, Assembly Process Design of IBM Corporation in Endicott, New York, and SMT Laboratory of Universal Instruments Corporation in Binghamton, New York. The group at the research center focused on the conductive adhesive materials development and characterization. The group in process development focused on processing of the Polymer-Metal-Solvent Paste (PMSP) to form conductive adhesive bumps, formation of the Polymer-Metal Compositemore » (PMC) on semiconductor devices and study of the bonding process to circuitized organic carriers, and the long term durability and reliability of joints formed using the process. The group at Universal Instruments focused on development of an equipment set and bonding parameters for the equipment to produce bond assembly tooling. Reports of each of these individual groups are presented here reviewing their technical efforts and achievements.« less

On the formation of noise-like pulses in fiber ring cavity configurations

NASA Astrophysics Data System (ADS)

Jeong, Yoonchan; Vazquez-Zuniga, Luis Alonso; Lee, Seungjong; Kwon, Youngchul

2014-12-01

We give an overview of the current status of fiber-based noise-like pulse (NLP) research conducted over the past decade, together with presenting the newly conducted, systematic study on their temporal, spectral, and coherence characteristics in nonlinear polarization rotation (NPR)-based erbium-doped fiber ring cavity configurations. Firstly, our study includes experimental investigations on the characteristic features of NLPs both in the net anomalous dispersion regime and in the net normal dispersion regime, in comparison with coherent optical pulses that can alternatively be obtained from the same cavity configurations, i.e., with the conventional and dissipative solitons. Secondly, our study includes numerical simulations on the formation of NLPs, utilizing a simplified, scalar-field model based on the characteristic transfer function of the NPR mechanism in conjunction with the split-step Fourier algorithm, which offer a great help in exploring the interrelationship between the NLP formation and various cavity parameters, and eventually present good agreement with the experimental results. We stress that if the cavity operates with excessively high gain, i.e., higher than the levels just required for generating coherent mode-locked pulses, i.e., conventional solitons and dissipative solitons, it may trigger NLPs, depending on the characteristic transfer function of the NPR mechanism induced in the cavity. In particular, the NPR transfer function is characterized by the critical saturation power and the linear loss ratio. Finally, we also report on the applications of the fiber-based NLP sources, including supercontinuum generation in a master-oscillator power amplifier configuration seeded by a fiber-based NLP source, as one typical example. We expect that the NLP-related research area will continue to expand, and that NLP-based sources will also find more applications in the future.

Model of superconductivity formation on ideal crystal lattice defect–twin or twin boundary (MSC-TB)

NASA Astrophysics Data System (ADS)

Chizhov, V. A.; Zaitsev, F. S.; Bychkov, V. L.

2018-03-01

The report provides a review of the experimental material on superconductivity (SP) accumulated by 2017, a critical analysis of the Bardeen-Cooper-Schrieffer theory (BCS) has been given, and a new model of the super-conductivity effect proposed in works of V.A. Chizhov has been presented. The new model allows to understand the mechanism of the SP formation and to explain many experimental facts on the basis of the theory of pro-cesses occurring in the ideal defect of the crystal lattice – the twinning boundary (MSC-TB). Specific materials, including new ones, are described, which, in accordance with the theory of MSC-TB, should have improved properties of SC, promising directions for further research are formulated.

Laser-Induced Graphene Formation on Wood.

PubMed

Ye, Ruquan; Chyan, Yieu; Zhang, Jibo; Li, Yilun; Han, Xiao; Kittrell, Carter; Tour, James M

2017-10-01

Wood as a renewable naturally occurring resource has been the focus of much research and commercial interests in applications ranging from building construction to chemicals production. Here, a facile approach is reported to transform wood into hierarchical porous graphene using CO 2 laser scribing. Studies reveal that the crosslinked lignocellulose structure inherent in wood with higher lignin content is more favorable for the generation of high-quality graphene than wood with lower lignin content. Because of its high electrical conductivity (≈10 Ω per square), graphene patterned on wood surfaces can be readily fabricated into various high-performance devices, such as hydrogen evolution and oxygen evolution electrodes for overall water splitting with high reaction rates at low overpotentials, and supercapacitors for energy storage with high capacitance. The versatility of this technique in formation of multifunctional wood hybrids can inspire both research and industrial interest in the development of wood-derived graphene materials and their nanodevices. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Formative research to inform intervention development for diabetes prevention in the Republic of the Marshall Islands.

PubMed

Cortes, L M; Gittelsohn, J; Alfred, J; Palafox, N A

2001-12-01

Formative research was conducted in the Republic of the Marshall Islands to help develop a diabetes prevention intervention. Methods included in-depth interviews, semistructured interviews, and direct observation of household behaviors in urban and remote settings. Foods were classified into two main conceptual spheres: foods from the islands/Marshallese foods and imported/American foods. Diabetes (nanimij in tonal) is a highly salient illness and is believed to be caused by foods high in fat and sugar, consumption of imported/American foods, family background, and the atomic bomb testing. Physical activity and eating a traditional diet were viewed as important for preventing diabetes. The traditional belief system links a large body with health, and a thin body with illness; however, perceptions are changing with increased acculturation and education about the health risks of obesity. These findings were used to develop a diabetes prevention home visit intervention currently being implemented and evaluated in Marshallese households.

Analytical studies on the instabilities of heterogeneous intelligent traffic flow

NASA Astrophysics Data System (ADS)

Ngoduy, D.

2013-10-01

It has been widely reported in literature that a small perturbation in traffic flow such as a sudden deceleration of a vehicle could lead to the formation of traffic jams without a clear bottleneck. These traffic jams are usually related to instabilities in traffic flow. The applications of intelligent traffic systems are a potential solution to reduce the amplitude or to eliminate the formation of such traffic instabilities. A lot of research has been conducted to theoretically study the effect of intelligent vehicles, for example adaptive cruise control vehicles, using either computer simulation or analytical method. However, most current analytical research has only applied to single class traffic flow. To this end, the main topic of this paper is to perform a linear stability analysis to find the stability threshold of heterogeneous traffic flow using microscopic models, particularly the effect of intelligent vehicles on heterogeneous (or multi-class) traffic flow instabilities. The analytical results will show how intelligent vehicle percentages affect the stability of multi-class traffic flow.

Nanosilver microalgae biosynthesis: cell appearance based on SEM and EDX methods

NASA Astrophysics Data System (ADS)

Pancasakti Kusumaningrum, Hermin; Zainuri, Muhammad; Marhaendrajaya, Indras; Subagio, Agus

2018-05-01

Microbial contamination has caused public health problems in the world population. This problem has spurred the development of methods to overcome and prevent microbial invasion. The extensive use of antibiotics has facilitated the continued emergence and spread of resistant organisms. Synthesized of silver nanoparticle (AgNPs) on microalgae Chlorella pyrenoidosa offer environmentally safe antimicrobial agent. The present study is focused on the biosynthesis of AgNPs using microalgae C. pyrenoidosa. The research methods was conducted by insertion of nanosilver particle into microalgae cells with and without agitation to speed up the process of formation nanosilver microalgae. The formation of microalgae SNP was analyzes by UV-Vis spectrophotometer, Scanning Electron Micrograph (SEM) and Energy-dispersive X-ray spectroscopy (EDX) methods. The research result showed that nanosilver microalgae biosynthesis using the agitation treatment was exhibited better performance in particle insertion and cell stability, comparing with no agitation treatment. However, synthesis of nanosilver microalgae tend to reduce the cell size.

Quarterly progress report for the Chemical and Energy Research Section of the Chemical Technology Division: October-December 1997

DOE Office of Scientific and Technical Information (OSTI.GOV)

Jubin, R.T.

This report summarizes the major activities conducted in the Chemical and Energy Research Section of the Chemical Technology Division at Oak Ridge National Laboratory (ORNL) during the period October--December 1997. The section conducts basic and applied research and development in chemical engineering, applied chemistry, and bioprocessing, with an emphasis on energy-driven technologies and advanced chemical separations for nuclear and waste applications. The report describes the various tasks performed within six major areas of research: Hot Cell Operations, Process Chemistry and Thermodynamics, Separations and Materials Synthesis, Fluid Structure and Properties, Biotechnology Research, and Molecular Studies. The name of a technical contactmore » is included with each task described, and readers are encouraged to contact these individuals if they need additional information. Activities conducted within the area of Hot Cell Operations included efforts to optimize the processing conditions for Enhanced Sludge Washing of Hanford tank sludge, the testing of candidate absorbers and ion exchangers under continuous-flow conditions using actual supernatant from the Melton Valley Storage Tanks, and attempts to develop a cesium-specific spherical inorganic sorbent for the treatment of acidic high-salt waste solutions. Within the area of Process Chemistry and Thermodynamics, the problem of solids formation in process solutions from caustic treatment of Hanford sludge was addressed and experimental collaborative efforts with Russian scientists to determine the solidification conditions of yttrium barium, and copper oxides from their melts were completed.« less

Trust and Credibility in Web-Based Health Information: A Review and Agenda for Future Research.

PubMed

Sbaffi, Laura; Rowley, Jennifer

2017-06-19

Internet sources are becoming increasingly important in seeking health information, such that they may have a significant effect on health care decisions and outcomes. Hence, given the wide range of different sources of Web-based health information (WHI) from different organizations and individuals, it is important to understand how information seekers evaluate and select the sources that they use, and more specifically, how they assess their credibility and trustworthiness. The aim of this study was to review empirical studies on trust and credibility in the use of WHI. The article seeks to present a profile of the research conducted on trust and credibility in WHI seeking, to identify the factors that impact judgments of trustworthiness and credibility, and to explore the role of demographic factors affecting trust formation. On this basis, it aimed to identify the gaps in current knowledge and to propose an agenda for future research. A systematic literature review was conducted. Searches were conducted using a variety of combinations of the terms WHI, trust, credibility, and their variants in four multi-disciplinary and four health-oriented databases. Articles selected were published in English from 2000 onwards; this process generated 3827 unique records. After the application of the exclusion criteria, 73 were analyzed fully. Interest in this topic has persisted over the last 15 years, with articles being published in medicine, social science, and computer science and originating mostly from the United States and the United Kingdom. Documents in the final dataset fell into 3 categories: (1) those using trust or credibility as a dependent variable, (2) those using trust or credibility as an independent variable, and (3) studies of the demographic factors that influence the role of trust or credibility in WHI seeking. There is a consensus that website design, clear layout, interactive features, and the authority of the owner have a positive effect on trust or credibility, whereas advertising has a negative effect. With regard to content features, authority of the author, ease of use, and content have a positive effect on trust or credibility formation. Demographic factors influencing trust formation are age, gender, and perceived health status. There is considerable scope for further research. This includes increased clarity of the interaction between the variables associated with health information seeking, increased consistency on the measurement of trust and credibility, a greater focus on specific WHI sources, and enhanced understanding of the impact of demographic variables on trust and credibility judgments. ©Laura Sbaffi, Jennifer Rowley. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 19.06.2017.

Developing a Family-Based HIV Prevention Intervention in Rural Kenya: Challenges in Conducting Community-Based Participatory Research

PubMed Central

Puffer, Eve S.; Pian, Jessica; Sikkema, Kathleen J.; Ogwang-Odhiambo, Rose A.; Broverman, Sherryl A.

2013-01-01

Community-based participatory research (CBPR) introduces new ethical challenges for HIV prevention studies in low-resource international settings. We describe a CBPR study in rural Kenya to develop and pilot a family-based HIV prevention and mental health promotion intervention. Academic partners (APs) worked with a community advisory committee (CAC) during formative research, intervention development, and a pilot trial. Ethical challenges emerged related to: negotiating power imbalances between APs and the CAC; CAC members’ shifting roles as part of the CAC and wider community; and anticipated challenges in decision making about sustainability. Factors contributing to ethical dilemmas included low access to education, scarcity of financial resources, and the shortage of HIV-related services despite high prevalence. PMID:23651936

KC-135 and Other Microgravity Simulations

NASA Technical Reports Server (NTRS)

Skinner, Noel C.

1999-01-01

This document represents a summary of medical and scientific evaluations conducted aboard the KC-135 from June 20, 1998 to June 20, 1999. Included is a general overview of KC-135 activities manifested and coordinated by the Life Sciences Research Laboratories. A collection of brief reports that describes tests conducted aboard the KC-135 follows the overview. Principal investigators and test engineers contributed significantly to the content of the report describing their particular experiment or hardware evaluation. Although this document follows general guidelines, each report format may vary to accommodate differences in experiment design and procedures. This document concludes with an appendix that provides background information concerning the KC-135 and the Reduced-Gravity Program.

2016 LLNL Nuclear Forensics Summer Program

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zavarin, Mavrik

The Lawrence Livermore National Laboratory (LLNL) Nuclear Forensics Summer Program is designed to give graduate students an opportunity to come to LLNL for 8–10 weeks for a hands-on research experience. Students conduct research under the supervision of a staff scientist, attend a weekly lecture series, interact with other students, and present their work in poster format at the end of the program. Students also have the opportunity to meet staff scientists one-on-one, participate in LLNL facility tours (e.g., the National Ignition Facility and Center for Accelerator Mass Spectrometry), and gain a better understanding of the various science programs at LLNL.

Data Mining Activities for Bone Discipline - Current Status

NASA Technical Reports Server (NTRS)

Sibonga, J. D.; Pietrzyk, R. A.; Johnston, S. L.; Arnaud, S. B.

2008-01-01

The disciplinary goals of the Human Research Program are broadly discussed. There is a critical need to identify gaps in the evidence that would substantiate a skeletal health risk during and after spaceflight missions. As a result, data mining activities will be engaged to gather reviews of medical data and flight analog data and to propose additional measures and specific analyses. Several studies are briefly reviewed which have topics that partially address these gaps in knowledge, including bone strength recovery with recovery of bone mass density, current renal stone formation knowledge, herniated discs, and a review of bed rest studies conducted at Ames Human Research Facility.

The information needs of patients receiving procedural sedation in a hospital emergency department.

PubMed

Revell, Sue; Searle, Judy; Thompson, Shona

2017-07-01

This research investigated the information needs of patients receiving ED procedural sedation to determine the best format to consistently deliver key information in a way acceptable to all involved. Of particular interest was the question concerning patients' need for receiving written information. A descriptive exploratory study gathered qualitative data through face-to-face interviews and focus groups involving patients, nurses and medical staff. Individual interviews were conducted with eight adult patients following procedural sedation. They identified very few gaps in terms of specific information they needed pertaining to procedural sedation and rejected the need for receiving information in a written format. Their information needs related to a central concern for safety and trust. Focus groups, reflecting on the findings from patients, were conducted with five ED nurses and four emergency medicine consultants/registrars who regularly provided procedural sedation. Themes that emerged from the analysis of data from all three groups identified the issues concerning patient information needs as being: competence and efficiency of staff; explanations of procedures and progress; support person presence; and medico-legal issues. The research confirms that the quality of the patient's ED experience, specifically related to procedural sedation, is enhanced by ED staff, especially nurses, providing them with ongoing and repeated verbal information relevant to their circumstances. Copyright © 2017 Elsevier Ltd. All rights reserved.

Promoting Prospective Elementary Teachers' Learning to Use Formative Assessment for Life Science Instruction

NASA Astrophysics Data System (ADS)

Sabel, Jaime L.; Forbes, Cory T.; Zangori, Laura

2015-06-01

To support elementary students' learning of core, standards-based life science concepts highlighted in the Next Generation Science Standards, prospective elementary teachers should develop an understanding of life science concepts and learn to apply their content knowledge in instructional practice to craft elementary science learning environments grounded in students' thinking. To do so, teachers must learn to use high-leverage instructional practices, such as formative assessment, to engage students in scientific practices and connect instruction to students' ideas. However, teachers may not understand formative assessment or possess sufficient science content knowledge to effectively engage in related instructional practices. To address these needs, we developed and conducted research within an innovative course for preservice elementary teachers built upon two pillars—life science concepts and formative assessment. An embedded mixed methods study was used to evaluate the effect of the intervention on preservice teachers' (n = 49) content knowledge and ability to engage in formative assessment practices for science. Findings showed that increased life content knowledge over the semester helped preservice teachers engage more productively in anticipating and evaluating students' ideas, but not in identifying effective instructional strategies to respond to those ideas.

CER Hub: An informatics platform for conducting comparative effectiveness research using multi-institutional, heterogeneous, electronic clinical data.

PubMed

Hazlehurst, Brian L; Kurtz, Stephen E; Masica, Andrew; Stevens, Victor J; McBurnie, Mary Ann; Puro, Jon E; Vijayadeva, Vinutha; Au, David H; Brannon, Elissa D; Sittig, Dean F

2015-10-01

Comparative effectiveness research (CER) requires the capture and analysis of data from disparate sources, often from a variety of institutions with diverse electronic health record (EHR) implementations. In this paper we describe the CER Hub, a web-based informatics platform for developing and conducting research studies that combine comprehensive electronic clinical data from multiple health care organizations. The CER Hub platform implements a data processing pipeline that employs informatics standards for data representation and web-based tools for developing study-specific data processing applications, providing standardized access to the patient-centric electronic health record (EHR) across organizations. The CER Hub is being used to conduct two CER studies utilizing data from six geographically distributed and demographically diverse health systems. These foundational studies address the effectiveness of medications for controlling asthma and the effectiveness of smoking cessation services delivered in primary care. The CER Hub includes four key capabilities: the ability to process and analyze both free-text and coded clinical data in the EHR; a data processing environment supported by distributed data and study governance processes; a clinical data-interchange format for facilitating standardized extraction of clinical data from EHRs; and a library of shareable clinical data processing applications. CER requires coordinated and scalable methods for extracting, aggregating, and analyzing complex, multi-institutional clinical data. By offering a range of informatics tools integrated into a framework for conducting studies using EHR data, the CER Hub provides a solution to the challenges of multi-institutional research using electronic medical record data. Copyright © 2015. Published by Elsevier Ireland Ltd.

Variations in petrophysical properties of shales along a stratigraphic section in the Whitby mudstone (UK)

NASA Astrophysics Data System (ADS)

Barnhoorn, Auke; Houben, Maartje; Lie-A-Fat, Joella; Ravestein, Thomas; Drury, Martyn

2015-04-01

In unconventional tough gas reservoirs (e.g. tight sandstones or shales) the presence of fractures, either naturally formed or hydraulically induced, is almost always a prerequisite for hydrocarbon productivity to be economically viable. One of the formations classified so far as a potential interesting formation for shale gas exploration in the Netherlands is the Lower Jurassic Posidonia Shale Formation (PSF). However data of the Posidonia Shale Formation is scarce so far and samples are hard to come by, especially on the variability and heterogeneity of the petrophysical parameters of this shale little is known. Therefore research and sample collection is conducted on a time and depositional analogue of the PSF: the Whitby Mudstone Formation (WMF) in the United Kingdom. A large number of samples along a ~7m stratigraphic section of the Whitby Mudstone Formation have been collected and analysed. Standard petrophysical properties such as porosity and matrix densities are quantified for a number of samples throughout the section, as well as mineral composition analysis based on XRD/XRF and SEM analyses. Seismic velocity measurements are also conducted at multiple heights in the section and in multiple directions to elaborate on anisotropy of the material. Attenuation anisotropy is incorporated as well as Thomsen's parameters combined with elastic parameters, e.g. Young's modulus and Poisson's ratio, to quantify the elastic anisotropy. Furthermore rock mechanical experiments are conducted to determine the elastic constants, rock strength, fracture characteristics, brittleness index, fraccability and rock mechanical anisotropy across the stratigraphic section of the Whitby mudstone formation. Results show that the WMF is highly anisotropic and it exhibits an anisotropy on the large limit of anisotropy reported for US gas shales. The high anisotropy of the Whitby shales has an even larger control on the formation of the fracture network. Furthermore, most petrophysical properties are highly variable. They vary per sample, but even within a sample on a mm-scale, large variations in e.g. the porosity occur. These relatively large variations influence the potential for future shale gas exploration for these Lower Jurassic shales in northern Europe and need to be quantified in detail beforehand. Compositional analyses and rock deformation experiments on the first samples indicate relatively low brittleness indices for the Whitby shale, but variation of these parameters within the stratigraphy are present. All petrophysical analyses combined will provide a complete assessment of the potential for shale gas exploration of these Lower Jurassic shales.

Delay in Apoptosome Formation Attenuates Apoptosis in Mouse Embryonic Stem Cell Differentiation

PubMed Central

Akbari-Birgani, Shiva; Hosseinkhani, Saman; Mollamohamadi, Sepideh; Baharvand, Hossein

2014-01-01

Differentiation is an inseparable process of development in multicellular organisms. Mouse embryonic stem cells (mESCs) represent a valuable research tool to conduct in vitro studies of cell differentiation. Apoptosis as a well known cell death mechanism shows some common features with cell differentiation, which has caused a number of ambiguities in the field. The research question here is how cells could differentiate these two processes from each other. We have investigated the role of the mitochondrial apoptotic pathway and cell energy level during differentiation of mESCs into the cardiomyocytes and their apoptosis. p53 expression, cytochrome c release, apoptosome formation, and caspase-3/7 activation are observed upon induction of both apoptosis and differentiation. However, remarkable differences are detected in time of cytochrome c appearance, apoptosome formation, and caspase activity upon induction of both processes. In apoptosis, apoptosome formation and caspase activity were observed rapidly following the cytochrome c release. Unlike apoptosis, the release of cytochrome c upon differentiation took more time, and the maximum caspase activity was also postponed for 24 h. This delay suggests that there is a regulatory mechanism during differentiation of mESCs into cardiomyocytes. The highest ATP content of cells was observed immediately after cytochrome c release 6 h after apoptosis induction and then decreased, but it was gradually increased up to 48 h after differentiation. These observations suggest that a delay in the release of cytochrome c or delay in ATP increase attenuate apoptosome formation, and caspase activation thereby discriminates apoptosis from differentiation in mESCs. PMID:24755221

Final-Approach Spacing Aids (FASA) evaluation for terminal-area, time-based air traffic control

NASA Technical Reports Server (NTRS)

Credeur, Leonard; Capron, William R.; Lohr, Gary W.; Crawford, Daniel J.; Tang, Dershuen A.; Rodgers, William G., Jr.

1993-01-01

A jointly funded (NASA/FAA) real-time simulation study was conducted at NASA Langley Research Center to gather comparative performance data among three candidate final-approach spacing aid (FASA) display formats. Several objective measures of controller performance and their display eye-scan behavior as well as subjective workload and rating questionnaires were used. For each of two representative pattern-speed procedures (a 170-knot procedure and a 210-knot procedure with speed control aiding), data were gathered, via twelve FAA controllers, using four final-controller display format conditions (manual/ARTS 3, graphic marker, DICE countdown, and centerline slot marker). Measured runway separations were more precise with both the graphic marker and DICE countdown formats than with the centerline slot marker and both (graphic and DICE) improved precision relative to the manual/ARTS 3 format. For three separate rating criteria, the subject controllers ranked the FASA formats in the same order: graphic marker, DICE countdown, and centerline slot marker. The increased precision measured with the 210-knot pattern-speed procedure may indicate the potential for the application of speed-control aiding where higher pattern speeds are practical after the base-to-final turn. Also presented are key FASA issues, a rationale for the formats selected for testing, and their description.

Assessing field-scale biogeophysical signatures of bioremediation over a mature crude oil spill

USGS Publications Warehouse

Slater, Lee; Ntarlagiannis, Dimitrios; Atekwana, Estella; Mewafy, Farag; Revil, Andre; Skold, Magnus; Gorby, Yuri; Day-Lewis, Frederick D.; Lane, John W.; Trost, Jared J.; Werkema, Dale D.; Delin, Geoffrey N.; Herkelrath, William N.; Rectanus, H.V.; Sirabian, R.

2011-01-01

We conducted electrical geophysical measurements at the National Crude Oil Spill Fate and Natural Attenuation Research Site (Bemidji, MN). Borehole and surface self-potential measurements do not show evidence for the existence of a biogeobattery mechanism in response to the redox gradient resulting from biodegradation of oil. The relatively small self potentials recorded are instead consistent with an electrodiffusion mechanism driven by differences in the mobility of charge carriers associated with biodegradation byproducts. Complex resistivity measurements reveal elevated electrical conductivity and interfacial polarization at the water table where oil contamination is present, extending into the unsaturated zone. This finding implies that the effect of microbial cell growth/attachment, biofilm formation, and mineral weathering accompanying hydrocarbon biodegradation on complex interfacial conductivity imparts a sufficiently large electrical signal to be measured using field-scale geophysical techniques.

Simulating Freak Waves in the Ocean with CFD Modeling

NASA Astrophysics Data System (ADS)

Manolidis, M.; Orzech, M.; Simeonov, J.

2017-12-01

Rogue, or freak, waves constitute an active topic of research within the world scientific community, as various maritime authorities around the globe seek to better understand and more accurately assess the risks that the occurrence of such phenomena entail. Several experimental studies have shed some light on the mechanics of rogue wave formation. In our work we numerically simulate the formation of such waves in oceanic conditions by means of Computational Fluid Dynamics (CFD) software. For this purpose we implement the NHWAVE and OpenFOAM software packages. Both are non-hydrostatic, turbulent flow solvers, but NHWAVE implements a shock-capturing scheme at the free surface-interface, while OpenFOAM utilizes the Volume Of Fluid (VOF) method. NHWAVE has been shown to accurately reproduce highly nonlinear surface wave phenomena, such as soliton propagation and wave shoaling. We conducted a range of tests simulating rogue wave formation and horizontally varying currents to evaluate and compare the capabilities of the two software packages. Then we used each model to investigate the effect of ocean currents and current gradients on the formation of rogue waves. We present preliminary results.

The Ionization History of The Intergalactic Medium:

NASA Technical Reports Server (NTRS)

Madau, Piero

2003-01-01

The funded project seeked a unified description of the ionization, physical structure, and evolution of the intergalactic medium (IGM) and quasar intervening absorption systems. We proposed to conduct theoretical studies of the IGM and QSO absorbers in the context of current theories of galaxy formation, developing and using numerical and analytical techniques aimed at a detailed modeling of cosmological radiative transfer, gas dynamics, and thermal and ionization evolution. The ionization history of the IGM has important implications for the metagalactic UV background, intergalactic helium absorption 21-cm tomography, metal absorption systems, fluctuations in the microwave background, and the cosmic rate of structure and star formation. All the original objectives of our program have been achieved, and the results widely used and quoted by the community. Indeed, they remain relevant as the level and complexity of research in this area has increased substantially since our proposal was submitted, due to new discoveries on galaxy formation and evolution, a flood of high-quality data on the distant universe, new theoretical ideas and direct numerical simulations of structure formation in hierarchical clustering theories.

Groundwater flow with energy transport and water-ice phase change: Numerical simulations, benchmarks, and application to freezing in peat bogs

USGS Publications Warehouse

McKenzie, J.M.; Voss, C.I.; Siegel, D.I.

2007-01-01

In northern peatlands, subsurface ice formation is an important process that can control heat transport, groundwater flow, and biological activity. Temperature was measured over one and a half years in a vertical profile in the Red Lake Bog, Minnesota. To successfully simulate the transport of heat within the peat profile, the U.S. Geological Survey's SUTRA computer code was modified. The modified code simulates fully saturated, coupled porewater-energy transport, with freezing and melting porewater, and includes proportional heat capacity and thermal conductivity of water and ice, decreasing matrix permeability due to ice formation, and latent heat. The model is verified by correctly simulating the Lunardini analytical solution for ice formation in a porous medium with a mixed ice-water zone. The modified SUTRA model correctly simulates the temperature and ice distributions in the peat bog. Two possible benchmark problems for groundwater and energy transport with ice formation and melting are proposed that may be used by other researchers for code comparison. ?? 2006 Elsevier Ltd. All rights reserved.

Formation of conductive polymers using nitrosyl ion as an oxidizing agent

DOEpatents

Choi, Kyoung-Shin; Jung, Yongju; Singh, Nikhilendra

2016-06-07

A method of forming a conductive polymer deposit on a substrate is disclosed. The method may include the steps of preparing a composition comprising monomers of the conductive polymer and a nitrosyl precursor, contacting the substrate with the composition so as to allow formation of nitrosyl ion on the exterior surface of the substrate, and allowing the monomer to polymerize into the conductive polymer, wherein the polymerization is initiated by the nitrosyl ion and the conductive polymer is deposited on the exterior surface of the substrate. The conductive polymer may be polypyrrole.

A knowledgebase system to enhance scientific discovery: Telemakus

PubMed Central

Fuller, Sherrilynne S; Revere, Debra; Bugni, Paul F; Martin, George M

2004-01-01

Background With the rapid expansion of scientific research, the ability to effectively find or integrate new domain knowledge in the sciences is proving increasingly difficult. Efforts to improve and speed up scientific discovery are being explored on a number of fronts. However, much of this work is based on traditional search and retrieval approaches and the bibliographic citation presentation format remains unchanged. Methods Case study. Results The Telemakus KnowledgeBase System provides flexible new tools for creating knowledgebases to facilitate retrieval and review of scientific research reports. In formalizing the representation of the research methods and results of scientific reports, Telemakus offers a potential strategy to enhance the scientific discovery process. While other research has demonstrated that aggregating and analyzing research findings across domains augments knowledge discovery, the Telemakus system is unique in combining document surrogates with interactive concept maps of linked relationships across groups of research reports. Conclusion Based on how scientists conduct research and read the literature, the Telemakus KnowledgeBase System brings together three innovations in analyzing, displaying and summarizing research reports across a domain: (1) research report schema, a document surrogate of extracted research methods and findings presented in a consistent and structured schema format which mimics the research process itself and provides a high-level surrogate to facilitate searching and rapid review of retrieved documents; (2) research findings, used to index the documents, allowing searchers to request, for example, research studies which have studied the relationship between neoplasms and vitamin E; and (3) visual exploration interface of linked relationships for interactive querying of research findings across the knowledgebase and graphical displays of what is known as well as, through gaps in the map, what is yet to be tested. The rationale and system architecture are described and plans for the future are discussed. PMID:15507158

The effect of bedload transport rates on bedform and planform morphological development in a laboratory meandering stream under varying flow conditions

NASA Astrophysics Data System (ADS)

Sullivan, C.; Good, R. G. R.; Binns, A. D.

2017-12-01

Sediment transport processes in streams provides valuable insight into the temporal evolution of planform and bedform geometry. The majority of previous experimental research in the literature has focused on bedload transport and corresponding bedform development in rectangular, confined channels, which does not consider planform adjustment processes in streams. In contrast, research conducted with laboratory streams having movable banks can investigate planform development in addition to bedform development, which is more representative of natural streams. The goal of this research is to explore the relationship between bedload transport rates and the morphological adjustments in meandering streams. To accomplish this, a series of experimental runs were conducted in a 5.6 m by 1.9 m river basin flume at the University of Guelph to analyze the bedload impacts on bed formations and planform adjustments in response to varying flow conditions. In total, three experimental runs were conducted: two runs using steady state conditions and one run using unsteady flow conditions in the form of a symmetrical hydrograph implementing quasi steady state flow. The runs were performed in a series of time-steps in order to monitor the evolution of the stream morphology and the bedload transport rates. Structure from motion (SfM) was utilized to capture the channel morphology after each time-step, and Agisoft PhotoScan software was used to produce digital elevation models to analyze the morphological evolution of the channel with time. Bedload transport rates were quantified using a sediment catch at the end of the flume. Although total flow volumes were similar for each run, the morphological evolution and bedload transport rates in each run varied. The observed bedload transport rates from the flume are compared with existing bedload transport formulas to assess their accuracy with respect to sediment transport in unconfined meandering channels. The measured sediment transport rates varied from the existing equations, which can be attributed to the sediment characteristics, planform morphology and bed formations. The results from this research provide greater knowledge of morphological processes in natural meandering streams to improve the capabilities of computational modelling and river engineering practice.

Developing scientists in Hispanic substance use and health disparities research through the creation of a national mentoring network

PubMed Central

Bazzi, Angela R.; Mogro-Wilson, Cristina; Negi, Nalini Junko; Gonzalez, Jennifer M. Reingle; Cano, Miguel Ángel; Castro, Yessenia; Cepeda, Alice

2017-01-01

Hispanics are disproportionately affected by substance use and related health harms yet remain underrepresented across scientific disciplines focused on researching and addressing these issues. An interdisciplinary network of scientists committed to fostering the development of social and biomedical researchers focused on Hispanic substance use and health disparities developed innovative mentoring and career development activities. We conducted a formative evaluation study using anonymous membership and conference feedback data to describe specific mentoring and career development activities developed within the national network. Successful mentoring initiatives and career development activities were infused with cultural and community values supportive of professional integration and persistence. Mentoring initially occurred within an annual national conference and was then sustained throughout the year through formal training programs and informal mentoring networks. Although rigorous evaluation is needed to determine the success of these strategies in fostering long-term career development among scientists conducting Hispanic health and substance use research, this innovative model may hold promise for other groups committed to promoting career development and professional integration and persistence for minority (and non-minority) scientists committed to addressing health disparities. PMID:28804254

Development of a smoking prevention mass media program using diagnostic and formative research.

PubMed

Worden, J K; Flynn, B S; Geller, B M; Chen, M; Shelton, L G; Secker-Walker, R H; Solomon, D S; Solomon, L J; Couchey, S; Costanza, M C

1988-09-01

The process of developing a mass media campaign to prevent smoking among adolescents is described in detail. This campaign supplements a school smoking prevention program and shares educational objectives with the school program but is otherwise independent. It comprises various television and radio 30- and 60-sec "spot" messages. The campaign development process includes identifying educational objectives and strategies for appealing to young people; conducting diagnostic surveys and focus groups to determine target audience interests and perceptions about smoking and media content; suggesting approaches to producers to create preliminary television and radio messages for testing; conducting formative pretests with target groups to select optimal messages and suggest improvements to those messages; producing final messages for media presentation; and developing a media exposure plan to place messages in local media at optimal times for reception by target audiences. The media campaign is being evaluated in a 5-year project with 5,500 adolescents in four communities to determine the additional effect of mass media over a school program alone in preventing smoking.

Effect of in-pile degradation of the meat thermal conductivity on the maximum temperature of the plate-type U-Mo dispersion fuels

DOE Office of Scientific and Technical Information (OSTI.GOV)

Pavel G. Medvedev

2009-11-01

Effect of in-pile degradation of thermal conductivity on the maximum temperature of the plate-type research reactor fuels has been assessed using the steady-state heat conduction equation and assuming convection cooling. It was found that due to very low meat thickness, characteristic for this type of fuel, the effect of thermal conductivity degradation on the maximum fuel temperature is minor. For example, the fuel plate featuring 0.635 mm thick meat operating at heat flux of 600 W/cm2 would experience only a 20oC temperature rise if the meat thermal conductivity degrades from 0.8 W/cm-s to 0.3 W/cm-s. While degradation of meat thermalmore » conductivity in dispersion-type U-Mo fuel can be very substantial due to formation of interaction layer between the particles and the matrix, and development of fission gas filled porosity, this simple analysis demonstrates that this phenomenon is unlikely to significantly affect the temperature-based safety margin of the fuel during normal operation.« less

Analysis of hydraulic tests of the Culebra and Magenta Dolomites and Dewey Lake Redbeds conducted at the Waste Isolation Pilot Plant Site

DOE Office of Scientific and Technical Information (OSTI.GOV)

Beauheim, R.L.; Ruskauff, G.J.

1998-09-01

This report presents interpretations of hydraulic tests conducted at 15 well locations in the vicinity of the Waste Isolation Pilot Plant (WIPP) in southeastern New Mexico between 1980 and 1996. The WIPP is a US Department of Energy (DOE) facility to demonstrate safe disposal of transuranic wastes arising form the nation`s defense programs. The WIPP repository lies within bedded halite of the Salado Formation, 2,155 ft below ground surface. The tests reported herein were, with two exceptions, conducted in the Culebra Dolomite member of the Rustler Formation, which overlies the Salado Formation. The remaining tests were conducted in the Magentamore » Member of the Rustler and in the overlying formation, the Dewey Lake Redbeds. This report completes the documentation of hydraulic-test interpretations used as input to the WIPP Compliance Certification Application (US DOE, 1996).« less

Flight-test evaluation of two electronic display formats for approach to landing under instrument conditions

NASA Technical Reports Server (NTRS)

Morello, S. A.; Knox, C. E.; Steinmetz, G. G.

1977-01-01

The results of a flight evaluation of two electronic display formats for the approach to landing under instrument conditions are presented. The evaluation was conducted for a base-line electronic display format and for the same format with runway symbology and track information added. The evaluation was conducted during 3 deg, manual straight-in approaches with and without initial localizer offsets. Flight path tracking performance data and pilot subjective comments were examined with regard to the pilot's ability to capture and maintain localizer and glide slope by using both display formats.

Parent Management Training-Oregon Model: Adapting Intervention with Rigorous Research.

PubMed

Forgatch, Marion S; Kjøbli, John

2016-09-01

Parent Management Training-Oregon Model (PMTO(®) ) is a set of theory-based parenting programs with status as evidence-based treatments. PMTO has been rigorously tested in efficacy and effectiveness trials in different contexts, cultures, and formats. Parents, the presumed agents of change, learn core parenting practices, specifically skill encouragement, limit setting, monitoring/supervision, interpersonal problem solving, and positive involvement. The intervention effectively prevents and ameliorates children's behavior problems by replacing coercive interactions with positive parenting practices. Delivery format includes sessions with individual families in agencies or families' homes, parent groups, and web-based and telehealth communication. Mediational models have tested parenting practices as mechanisms of change for children's behavior and found support for the theory underlying PMTO programs. Moderating effects include children's age, maternal depression, and social disadvantage. The Norwegian PMTO implementation is presented as an example of how PMTO has been tailored to reach diverse populations as delivered by multiple systems of care throughout the nation. An implementation and research center in Oslo provides infrastructure and promotes collaboration between practitioners and researchers to conduct rigorous intervention research. Although evidence-based and tested within a wide array of contexts and populations, PMTO must continue to adapt to an ever-changing world. © 2016 Family Process Institute.

Asking mom: formative research for an HPV vaccine campaign targeting mothers of adolescent girls.

PubMed

Shafer, Autumn; Cates, Joan R; Diehl, Sandra J; Hartmann, Miriam

2011-10-01

Vaccination against the types of human papillomavirus (HPV) that cause about 70% of cervical cancers is approved for use in girls and women between 9 and 26 years of age and recommended routinely in 11-12-year-old girls. This article reports on the systematic theory-based formative research conducted to develop HPV vaccine messages for a campaign targeting racially diverse mothers of nonvaccinated 11-12-year-old girls in rural Southeastern United States. A consortium of 13 county health departments concerned about high rates of cervical cancer in their region relative to state and national averages initiated the campaign. The research examined behavioral determinants for vaccination decisions as well as mothers' reactions to message frames and emotional appeals. On the basis of focus groups and intercept interviews (n = 79), the authors demonstrated how preproduction message research and production message testing were used to develop messages that would motivate mothers of preteen girls. Core emotional truths that emerged were a mother's instinct to protect her daughter from harm and to embrace aspirations for her daughter's future. Mothers also reacted more positively to text about preventing cervical cancer than about preventing HPV, a sexually transmitted disease. Mothers preferred message concepts with photos of minorities and Caucasian mothers and daughters.

Numerical modeling the formation of impact craters: Implications for the structure of Europa's ice shell

NASA Astrophysics Data System (ADS)

Silber, E. A.; Johnson, B. C.

2017-12-01

Craters produced by hypervelocity impacts are an invaluable tool for studying planetary surfaces. The observed impact crater depth-diameter (d-D) on the Galilean moon Europa exhibits three distinct transition regimes, two of which may correspond to the presence of warm convecting ice at depths of 7-8 km and a liquid ocean at 19-25 km, respectively [1]. In our study, we use iSALE2D to model formation of impact craters on Europa to investigate thickness and internal structure of its ice shell. This study is different from previous modeling studies [2,3] in that we consider the both fully conductive ice shell over ocean, as well as conductive lid overlying warm convecting ice, to discern the boundary conditions at the interface between the ice and the underlying ocean. Moreover, our model includes implementation of the full viscoelastic-plastic rheology for ice. Our results suggest that both conductive shell over ocean and conductive lid over warm convective ice are equally probable on Europa. We will discuss the implications and relevance of these results. The plausible scenarios are either a 6 - 7 km thick conductive ice lid overlying warm convecting ice at 265 K, or an 8 km completely conductive ice shell over ocean. Acknowledgements: We gratefully acknowledge the developers of iSALE-2D (www.isale-code.de), the simulation code used in our research, including G. Collins, K. Wünnermann, D. Elbeshausen, B. Ivanov and J. Melosh. References: [1] Schenk P. (2002) Nature, 417, 419-421. [2] Bray V.J. et al. (2014) Icarus, 231, 394-406. [3] Cox R. and Beuer A.W. (2015) JGR - Planets, 120(10), 1708-1719.

Partnerships for the Design, Conduct, and Analysis of Effectiveness, and Implementation Research: Experiences of the Prevention Science and Methodology Group

PubMed Central

Brown, C. Hendricks; Kellam, Sheppard G.; Kaupert, Sheila; Muthén, Bengt O.; Wang, Wei; Muthén, Linda K.; Chamberlain, Patricia; PoVey, Craig L.; Cady, Rick; Valente, Thomas W.; Ogihara, Mitsunori; Prado, Guillermo J.; Pantin, Hilda M.; Gallo, Carlos G.; Szapocznik, José; Czaja, Sara J.; McManus, John W.

2012-01-01

What progress prevention research has made comes through strategic partnerships with communities and institutions that host this research, as well as professional and practice networks that facilitate the diffusion of knowledge about prevention. We discuss partnership issues related to the design, analysis, and implementation of prevention research and especially how rigorous designs, including random assignment, get resolved through a partnership between community stakeholders, institutions, and researchers. These partnerships shape not only study design, but they determine the data that can be collected and how results and new methods are disseminated. We also examine a second type of partnership to improve the implementation of effective prevention programs into practice. We draw on social networks to studying partnership formation and function. The experience of the Prevention Science and Methodology Group, which itself is a networked partnership between scientists and methodologists, is highlighted. PMID:22160786

Religious Study of Katoba Tradition and Its Function in Character Building of Muna Society

NASA Astrophysics Data System (ADS)

Hardin, Hardin; Hermina, Sitti

2018-05-01

This research aims at studying the function of Katoba tradition to the character-building of the society of Muna ethnics. The research was conducted in Kecamatan Lawa, West Muna District. This research includes descriptive-qualitative research. Data collection techniques used are observation, interview, record, and documentation. The object of this study is the speech or advice in the katoba tradition related to character education. From the research results found that the ethnic Muna community has a tradition of katoba in shaping the character of society. The value of the character in question is the formation of respectful values of honour, the value of character and ethical values in the person of the child who has been tried. It expected that this article will be able to inspire and guide people to have a good personality, to behave and to behave wisely to their family and social environment.

Partnerships for the design, conduct, and analysis of effectiveness, and implementation research: experiences of the prevention science and methodology group.

PubMed

Brown, C Hendricks; Kellam, Sheppard G; Kaupert, Sheila; Muthén, Bengt O; Wang, Wei; Muthén, Linda K; Chamberlain, Patricia; PoVey, Craig L; Cady, Rick; Valente, Thomas W; Ogihara, Mitsunori; Prado, Guillermo J; Pantin, Hilda M; Gallo, Carlos G; Szapocznik, José; Czaja, Sara J; McManus, John W

2012-07-01

What progress prevention research has made comes through strategic partnerships with communities and institutions that host this research, as well as professional and practice networks that facilitate the diffusion of knowledge about prevention. We discuss partnership issues related to the design, analysis, and implementation of prevention research and especially how rigorous designs, including random assignment, get resolved through a partnership between community stakeholders, institutions, and researchers. These partnerships shape not only study design, but they determine the data that can be collected and how results and new methods are disseminated. We also examine a second type of partnership to improve the implementation of effective prevention programs into practice. We draw on social networks to studying partnership formation and function. The experience of the Prevention Science and Methodology Group, which itself is a networked partnership between scientists and methodologists, is highlighted.

[Preliminarily application of content analysis to qualitative nursing data].

PubMed

Liang, Shu-Yuan; Chuang, Yeu-Hui; Wu, Shu-Fang

2012-10-01

Content analysis is a methodology for objectively and systematically studying the content of communication in various formats. Content analysis in nursing research and nursing education is called qualitative content analysis. Qualitative content analysis is frequently applied to nursing research, as it allows researchers to determine categories inductively and deductively. This article examines qualitative content analysis in nursing research from theoretical and practical perspectives. We first describe how content analysis concepts such as unit of analysis, meaning unit, code, category, and theme are used. Next, we describe the basic steps involved in using content analysis, including data preparation, data familiarization, analysis unit identification, creating tentative coding categories, category refinement, and establishing category integrity. Finally, this paper introduces the concept of content analysis rigor, including dependability, confirmability, credibility, and transferability. This article elucidates the content analysis method in order to help professionals conduct systematic research that generates data that are informative and useful in practical application.

Enhancing a Teen Pregnancy Prevention Program with text messaging: engaging minority youth to develop TOP ® Plus Text.

PubMed

Devine, Sharon; Bull, Sheana; Dreisbach, Susan; Shlay, Judith

2014-03-01

To develop and pilot a theory-based, mobile phone texting component attractive to minority youth as a supplement to the Teen Outreach Program(®), a youth development program for reducing teen pregnancy and school dropout. We conducted iterative formative research with minority youth in multiple focus groups to explore interest in texting and reaction to text messages. We piloted a month-long version of TOP(®) Plus Text with 96 teens at four sites and conducted a computer-based survey immediately after enrollment and at the end of the pilot that collected information about teens' values, social support, self-efficacy, and behaviors relating to school performance, trouble with the law, and sexual activity. After each of the first three weekly sessions we collected satisfaction measures. Upon completion of the pilot we conducted exit interviews with twelve purposively selected pilot participants. We successfully recruited and enrolled minority youth into the pilot. Teens were enthusiastic about text messages complementing TOP(®). Results also revealed barriers: access to text-capable mobile phones, retention as measured by completion of the post-pilot survey, and a need to be attentive to teen literacy. Piloting helped identify improvements for implementation including offering text messages through multiple platforms so youth without access to a mobile phone could receive messages; rewording texts to allow youth to express opinions without feeling judged; and collecting multiple types of contact information to improve follow-up. Thoughtful attention to social and behavioral theory and investment in iterative formative research with extensive consultation with teens can lead to an engaging texting curriculum that enhances and complements TOP(®). Copyright © 2014 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.

Geomechanical/ Geochemical Modeling Studies onducted Within the International DECOVALEX Project

DOE Office of Scientific and Technical Information (OSTI.GOV)

J.T. Birkholzer; J. Rutqvist; E.L. Sonnenthal

2006-02-01

The DECOVALEX project is an international cooperative project initiated by SKI, the Swedish Nuclear Power Inspectorate, with participation of about 10 international organizations. The general goal of this project is to encourage multidisciplinary interactive and cooperative research on modeling coupled thermo-hydro-mechanical-chemical (THMC) processes in geologic formations in support of the performance assessment for underground storage of radioactive waste. One of the research tasks, initiated in 2004 by the U.S. Department of Energy (DOE), addresses the long-term impact of geomechanical and geochemical processes on the flow conditions near waste emplacement tunnels. Within this task, four international research teams conduct predictive analysismore » of the coupled processes in two generic repositories, using multiple approaches and different computer codes. Below, we give an overview of the research task and report its current status.« less

Overview of NASA FINESSE (Field Investigations to Enable Solar System Science and Exploration) Science and Exploration Results

NASA Technical Reports Server (NTRS)

Heldmann, Jennifer L.; Lim, Darlene S. S.; Hughes, S.; Kobs, S.; Garry, B.; Osinski, G. R.; Hodges, K.; Kobayashi, L.; Colaprete, A.

2015-01-01

NASA's FINESSE (Field Investigations to Enable Solar System Science and Exploration) project is focused on a science and exploration field-based research program to generate strategic knowledge in preparation for human and robotic exploration of other planetary bodies including our moon, Mars' moons Phobos and Deimos, and near-Earth asteroids. Scientific study focuses on planetary volcanism (e.g., the formation of volcanoes, evolution of magma chambers and the formation of multiple lava flow types, as well as the evolution and entrapment of volatile chemicals) and impact cratering (impact rock modification, cratering mechanics, and the chronologic record). FINESSE conducts multiple terrestrial field campaigns (Craters of the Moon National Monument and Preserve in Idaho for volcanics, and West Clearwater Impact Structure in Canada for impact studies) to study such features as analogs relevant to our moon, Phobos, Deimos, and asteroids. Here we present the science and exploration results from two deployments to Idaho (2014, 2015) and our first deployment to Canada (2014). FINESSE was selected as a research team by NASA's Solar System Exploration Research Virtual Institute (SSERVI). SSERVI is a joint effort by NASA's Science Mission Directorate (SMD) and Human Exploration and Operations Mission Directorate (HEOMD).

Tracheal Wall Thickening Is Associated with the Granulation Tissue Formation Around Silicone Stents in Patients with Post-Tuberculosis Tracheal Stenosis

PubMed Central

Eom, Jung Seop; Jeon, Kyeongman; Um, Sang-Won; Koh, Won-Jung; Suh, Gee Young; Chung, Man Pyo; Kwon, O Jung

2013-01-01

Purpose Tracheal restenosis due to excessive granulation tissue around a silicone stent requires repeated bronchoscopic interventions in patients with post-tuberculosis tracheal stenosis (PTTS). The current study was conducted to identify the risk factors for granulation tissue formation after silicone stenting in PTTS patients. Materials and Methods A retrospective study was conducted between January 1998 and December 2010. Forty-two PTTS patients with silicone stenting were selected. Clinical and radiological variables were retrospectively collected and analyzed. Results Tracheal restenosis due to granulation tissue formation were found in 20 patients (47.6%), and repeated bronchoscopic interventions were conducted. In multivariate analysis, tracheal wall thickness, measured on axial computed tomography scan, was independently associated with granulation tissue formation after silicone stenting. Furthermore, the degree of tracheal wall thickness was well correlated with the degree of granulation tissue formation. Conclusion Tracheal wall thickening was associated with granulation tissue formation around silicone stents in patients with post-tuberculosis tracheal stenosis. PMID:23709431

Tracheal wall thickening is associated with the granulation tissue formation around silicone stents in patients with post-tuberculosis tracheal stenosis.

PubMed

Eom, Jung Seop; Kim, Hojoong; Jeon, Kyeongman; Um, Sang-Won; Koh, Won-Jung; Suh, Gee Young; Chung, Man Pyo; Kwon, O Jung

2013-07-01

Tracheal restenosis due to excessive granulation tissue around a silicone stent requires repeated bronchoscopic interventions in patients with post-tuberculosis tracheal stenosis (PTTS). The current study was conducted to identify the risk factors for granulation tissue formation after silicone stenting in PTTS patients. A retrospective study was conducted between January 1998 and December 2010. Forty-two PTTS patients with silicone stenting were selected. Clinical and radiological variables were retrospectively collected and analyzed. Tracheal restenosis due to granulation tissue formation were found in 20 patients (47.6%), and repeated bronchoscopic interventions were conducted. In multivariate analysis, tracheal wall thickness, measured on axial computed tomography scan, was independently associated with granulation tissue formation after silicone stenting. Furthermore, the degree of tracheal wall thickness was well correlated with the degree of granulation tissue formation. Tracheal wall thickening was associated with granulation tissue formation around silicone stents in patients with post-tuberculosis tracheal stenosis.

An exploratory mixed-methods crossover study comparing DVD- vs. Web-based patient decision support in three conditions: The importance of patient perspectives.

PubMed

Halley, Meghan C; Rendle, Katharine A S; Gillespie, Katherine A; Stanley, Katherine M; Frosch, Dominick L

2015-12-01

The last 15 years have witnessed considerable progress in the development of decision support interventions (DESIs). However, fundamental questions about design and format of delivery remain. An exploratory, randomized mixed-method crossover study was conducted to compare a DVD- and Web-based DESI. Randomized participants used either the Web or the DVD first, followed by the alternative format. Participants completed a questionnaire to assess decision-specific knowledge at baseline and a questionnaire and structured qualitative interview after viewing each format. Tracking software was used to capture Web utilization. Transcripts were analyzed using integrated inductive and deductive approaches. Quantitative data were analyzed using exploratory bivariate and multivariate analyses. Exploratory knowledge analyses suggest that both formats increased knowledge, with limited evidence that the DVD increased knowledge more than the Web. Format preference varied across participants: 44% preferred the Web, 32% preferred the DVD and 24% preferred 'both'. Patient discussions of preferences for DESI information structure and the importance of a patients' stage of a given decision suggest these characteristics may be important factors underlying variation in utilization, format preferences and knowledge outcomes. Our results suggest that both DESI formats effectively increase knowledge. Patients' perceptions of these two formats further suggest that there may be no single 'best' format for all patients. These results have important implications for understanding why different DESI formats might be preferable to and more effective for different patients. Further research is needed to explore the relationship between these factors and DESI utilization outcomes across diverse patient populations. © 2014 John Wiley & Sons Ltd.

Sensory and short-term memory formations observed in a Ag2S gap-type atomic switch

NASA Astrophysics Data System (ADS)

Ohno, Takeo; Hasegawa, Tsuyoshi; Nayak, Alpana; Tsuruoka, Tohru; Gimzewski, James K.; Aono, Masakazu

2011-11-01

Memorization caused by the change in conductance in a Ag2S gap-type atomic switch was investigated as a function of the amplitude and width of input voltage pulses (Vin). The conductance changed little for the first few Vin, but the information of the input was stored as a redistribution of Ag-ions in the Ag2S, indicating the formation of sensory memory. After a certain number of Vin, the conductance increased abruptly followed by a gradual decrease, indicating the formation of short-term memory (STM). We found that the probability of STM formation depends strongly on the amplitude and width of Vin, which resembles the learning behavior of the human brain.

The under-representation of African American women in the STEM fields within the academy: A historical profile and current perceptions

NASA Astrophysics Data System (ADS)

Howard, Tenisha Senora

This research project seeks to discover the reasons behind the underrepresentation of African American women (AAW) in higher education, particularly in the Science Technology Engineering and Mathematics fields. Why is there underrepresentation of AAW in the STEM fields? Research evidence has demonstrated that AAW face social disparities such as race, gender, and class in the academy. A lack of adequate mentoring and financial resources to support their research efforts are related to these disparities and present fundamental challenges for them. To conduct the inquiry about the barriers AAW have to overcome to achieve success in STEM disciplines, a qualitative research method was used to "attend to social, historical, and temporal context. The findings of these studies are tentatively applied; that is, they may be applicable in diverse situations based on comparability of other contexts" (Mariano, 1995, p. 464). The researcher collected data by conducting in-depth interviews with five participants, using an open-ended conversational format to facilitate the development of trust, rapport, and maximum elicitation of stories from the participants. The results suggest that AAW overcome barriers to successful STEM careers through their family and social ties, mentoring relationships as well as their religious practices.

Evidence-based medicine at the intersection of research interests between academic health sciences librarians and medical educators: a review of the literature.

PubMed

Dorsch, Josephine L; Perry, Gerald Jerry

2012-10-01

In 2008, the Association of Academic Health Sciences Libraries established an Education Research Task Force (ERTF) to plan research addressing research priorities outlined in key Association of American Medical Colleges reports. ERTF members conducted a literature review to describe the state of collaborative research at the intersection of medical education and health sciences librarianship. Analysis of initial results revealed instruction in evidence-based medicine (EBM) was a shared interest and is thus the focus of this review. Searches on EBM teaching programs were conducted, and results were posted to a shared online citation management service. Individual articles were assessed and assigned metadata describing subject matter, scope, and format. Article analysis identified key themes. Most papers were descriptive narratives of curricular development. Evaluation studies were also prominent and often based on student satisfaction or self-reported competency. A smaller number of controlled studies provide evidence of impacts of librarian involvement in EBM instruction. Scholarship of EBM instruction is of common interest between medical educators and health sciences librarians. Coauthorship between the groups and distribution of literature points to a productive collaboration. An emerging literature of controlled studies measuring the impact of cross-disciplinary efforts signals continued progress in the arena of EBM instruction.

Evidence-based medicine at the intersection of research interests between academic health sciences librarians and medical educators: a review of the literature

PubMed Central

Dorsch, Josephine L.; Perry, Gerald (Jerry)

2012-01-01

Objectives: In 2008, the Association of Academic Health Sciences Libraries established an Education Research Task Force (ERTF) to plan research addressing research priorities outlined in key Association of American Medical Colleges reports. ERTF members conducted a literature review to describe the state of collaborative research at the intersection of medical education and health sciences librarianship. Analysis of initial results revealed instruction in evidence-based medicine (EBM) was a shared interest and is thus the focus of this review. Methods: Searches on EBM teaching programs were conducted, and results were posted to a shared online citation management service. Individual articles were assessed and assigned metadata describing subject matter, scope, and format. Results: Article analysis identified key themes. Most papers were descriptive narratives of curricular development. Evaluation studies were also prominent and often based on student satisfaction or self-reported competency. A smaller number of controlled studies provide evidence of impacts of librarian involvement in EBM instruction. Conclusions: Scholarship of EBM instruction is of common interest between medical educators and health sciences librarians. Coauthorship between the groups and distribution of literature points to a productive collaboration. An emerging literature of controlled studies measuring the impact of cross-disciplinary efforts signals continued progress in the arena of EBM instruction. PMID:23133324

How much importance do we give to target audiences in article writing?

PubMed

Nedjat, Sima; Nedjat, Saharnaz; Gholami, Jaleh; Ashoorkhani, Mahnaz; Maleki, Katayoun; Hejrie, Soroush Mortaz; Majdzadeh, Reza

2010-01-01

Writing papers can be used as a means to convey a message. Knowledge transfer is also about conveying the right message to the right target audience. The aim of this study was to determine the proportion of articles that had mentioned a clear message and the target audience in the abstract and the article as a whole, and also to examine their association with different determinant factors. Articles published from 2001 to 2006 that were based on clinical and health system research conducted on Iranian populations and on maternal care, diabetes and tuberculosis were searched systematically in domestic and international databases. Eventually checklists (Additional file 1) were completed for 795 articles. Overall, 98.5% of articles had a clear message, whereas 12.5% had addressed the direct target audience. Presence of a clear message in formatted abstracts were seen 3.6 times more (CI95%: 1.5-8.7) than in articles without formatted abstracts (p = 0.005). Addressing of the direct target audience was seen twice as much in health system research articles as compared to clinical studies, odds ratio was 2.3 (CI95%: 1.47-3.48, p<0.001). Creating a format for journal abstracts seems to be an effective intervention for presenting the message in articles.

Liquid droplet radiator program at the NASA Lewis Research Center

NASA Technical Reports Server (NTRS)

Presler, A. F.; Coles, C. E.; Diem-Kirsop, P. S.; White, K. A., III

1985-01-01

The NASA Lewis Research Center and the Air Force Rocket Propulsion Laboratory (AFRPL) are jointly engaged in a program for technical assessment of the Liquid Droplet Radiator (LDR) concept as an advanced high performance heat ejection component for future space missions. NASA Lewis has responsibility for the technology needed for the droplet generator, for working fluid qualification, and for investigating the physics of droplets in space; NASA Lewis is also conducting systems/mission analyses for potential LDR applications with candidate space power systems. For the droplet generator technology task, both micro-orifice fabrication techniques and droplet stream formation processes have been experimentally investigated. High quality micro-orifices (to 50 micron diameter) are routinely fabricated with automated equipment. Droplet formation studies have established operating boundaries for the generation of controlled and uniform droplet streams. A test rig is currently being installed for the experimental verification, under simulated space conditions, of droplet radiation heat transfer performance analyses and the determination of the effect radiative emissivity of multiple droplet streams. Initial testing has begun in the NASA Lewis Zero-Gravity Facility for investigating droplet stream behavior in microgravity conditions. This includes the effect of orifice wetting on jet dynamics and droplet formation. Results for both Brayton and Stirling power cycles have identified favorable mass and size comparisons of the LDR with conventional radiator concepts.

The Microbe Directory: An annotated, searchable inventory of microbes’ characteristics

PubMed Central

Mohammad, Rawhi; Danko, David; Bezdan, Daniela; Afshinnekoo, Ebrahim; Segata, Nicola; Mason, Christopher E.

2018-01-01

The Microbe Directory is a collective research effort to profile and annotate more than 7,500 unique microbial species from the MetaPhlAn2 database that includes bacteria, archaea, viruses, fungi, and protozoa. By collecting and summarizing data on various microbes’ characteristics, the project comprises a database that can be used downstream of large-scale metagenomic taxonomic analyses, allowing one to interpret and explore their taxonomic classifications to have a deeper understanding of the microbial ecosystem they are studying. Such characteristics include, but are not limited to: optimal pH, optimal temperature, Gram stain, biofilm-formation, spore-formation, antimicrobial resistance, and COGEM class risk rating. The database has been manually curated by trained student-researchers from Weill Cornell Medicine and CUNY—Hunter College, and its analysis remains an ongoing effort with open-source capabilities so others can contribute. Available in SQL, JSON, and CSV (i.e. Excel) formats, the Microbe Directory can be queried for the aforementioned parameters by a microorganism’s taxonomy. In addition to the raw database, The Microbe Directory has an online counterpart ( https://microbe.directory/) that provides a user-friendly interface for storage, retrieval, and analysis into which other microbial database projects could be incorporated. The Microbe Directory was primarily designed to serve as a resource for researchers conducting metagenomic analyses, but its online web interface should also prove useful to any individual who wishes to learn more about any particular microbe. PMID:29630066

Ongoing data reduction, theoretical studies and supporting research in magnetospheric physics

NASA Technical Reports Server (NTRS)

Scarf, F. L.; Greenstadt, E. W.

1984-01-01

Data from ISEE-3, Pioneer Venus Orbiter, and Voyager 1 and 2 were analyzed. The predictability of local shock macrostructure at ISEE-1, at the Earth's bow shock, from solar wind measurements made up-stream by ISEE-3, was conducted using computer graphic format. Morphology of quasi-parallel shock was reviewed. The review attempted to interrelate various measurements and computations involving the q-parallel structure and foreshock elements connected to it. A new classification for q-parallel morphology was suggested.

Workshop I: Systems/Standards/Arrays

NASA Technical Reports Server (NTRS)

Piszczor, Mike; Reed, Brad

2007-01-01

Workshop Format: 1) 1:00 - 3:00 to cover various topics as appropriate; 2) At last SPRAT, conducted Workshop topic on solar cell and array qualification standards. Brad Reed will present update on status of that effort; 3) Second workshop topic: The Future of PV Research within NASA. 4) Any time remaining, specific topics from participants. 5) Reminder for IAPG Members! RECWG today 3:00-5:00 in Federal Room, 2nd Floor OAI. a chart is presented showing: Evaluation of Solar Array Technology Readiness Levels.

Site Environmental Report for 2010, Volumes 1 & 2

DOE Office of Scientific and Technical Information (OSTI.GOV)

Baskin, David; Bauters, Tim; Borglin, Ned

2011-09-01

LBNL is a multiprogram scientific facility operated by the UC for the DOE. LBNL’s research is directed toward the physical, biological, environmental, and computational sciences, in order to deliver scientific knowledge and discoveries pertinent to DOE’s missions. This annual Site Environmental Report covers activities conducted in CY 2010. The format and content of this report satisfy the requirements of DOE Order 231.1A, Environment, Safety, and Health Reporting,1 and the operating contract between UC and DOE

Ice Particle Impacts on a Flat Plate

NASA Technical Reports Server (NTRS)

Vargas, Mario; Ruggeri, Charles; Struk, Peter M.; Pereira, Mike; Revilock, Duane; Kreeger, Richard E.

2015-01-01

An experimental study was conducted at the Ballistic Laboratory of NASA Glenn Research Center to study the impact of ice particles on a stationary flat surface target set at 45 degrees with respect to the direction of motion of the impinging particle (Figure 1). The experiment is part of NASA efforts to study the physics involved in engine power-loss events due to ice-crystal ingestion and ice accretion formation inside engines. These events can occur when aircraft encounter high-altitude convective weather.

Collaborations for Leadership in Applied Health Research and Care: lessons from the theory of communities of practice

PubMed Central

2011-01-01

Background The paper combines the analytical and instrumental perspectives on communities of practice (CoPs) to reflect on potential challenges that may arise in the process of interprofessional and inter-organisational joint working within the Collaborations for Leaderships in Applied Health Research and Care (CLAHRCs)--partnerships between the universities and National Health Service (NHS) Trusts aimed at conducting applied health research and translating its findings into day-to-day clinical practice. Discussion The paper discusses seminal theoretical literature on CoPs as well as previous empirical research on the role of these communities in healthcare collaboration, which is organised around the following three themes: knowledge sharing within and across CoPs, CoP formation and manageability, and identity building in CoPs. It argues that the multiprofessional and multi-agency nature of the CLAHRCs operating in the traditionally demarcated organisational landscape of the NHS may present formidable obstacles to knowledge sharing between various professional groupings, formation of a shared 'collaborative' identity, and the development of new communities within the CLAHRCs. To cross multiple boundaries between various professional and organisational communities and hence enable the flow of knowledge, the CLAHRCs will have to create an effective system of 'bridges' involving knowledge brokers, boundary objects, and cross-disciplinary interactions as well as address a number of issues related to professional and organisational identification. Summary The CoP approach can complement traditional 'stage-of-change' theories used in the field of implementation research and provide a basis for designing theory-informed interventions and evaluations. It can help to illuminate multiple boundaries that exist between professional and organisational groups within the CLAHRCs and suggest ways of crossing those boundaries to enable knowledge transfer and organisational learning. Achieving the aims of the CLAHRCs and producing a sustainable change in the ways applied health research is conducted and implemented may be influenced by how effectively these organisations can navigate through the multiple CoPs involved and promote the development of new multiprofessional and multi-organisational communities united by shared practice and a shared sense of belonging--an assumption that needs to be explored by further empirical research. PMID:21699712

Collaborations for leadership in applied health research and care: lessons from the theory of communities of practice.

PubMed

Kislov, Roman; Harvey, Gill; Walshe, Kieran

2011-06-23

The paper combines the analytical and instrumental perspectives on communities of practice (CoPs) to reflect on potential challenges that may arise in the process of interprofessional and inter-organisational joint working within the Collaborations for Leaderships in Applied Health Research and Care (CLAHRCs)--partnerships between the universities and National Health Service (NHS) Trusts aimed at conducting applied health research and translating its findings into day-to-day clinical practice. The paper discusses seminal theoretical literature on CoPs as well as previous empirical research on the role of these communities in healthcare collaboration, which is organised around the following three themes: knowledge sharing within and across CoPs, CoP formation and manageability, and identity building in CoPs. It argues that the multiprofessional and multi-agency nature of the CLAHRCs operating in the traditionally demarcated organisational landscape of the NHS may present formidable obstacles to knowledge sharing between various professional groupings, formation of a shared 'collaborative' identity, and the development of new communities within the CLAHRCs. To cross multiple boundaries between various professional and organisational communities and hence enable the flow of knowledge, the CLAHRCs will have to create an effective system of 'bridges' involving knowledge brokers, boundary objects, and cross-disciplinary interactions as well as address a number of issues related to professional and organisational identification. The CoP approach can complement traditional 'stage-of-change' theories used in the field of implementation research and provide a basis for designing theory-informed interventions and evaluations. It can help to illuminate multiple boundaries that exist between professional and organisational groups within the CLAHRCs and suggest ways of crossing those boundaries to enable knowledge transfer and organisational learning. Achieving the aims of the CLAHRCs and producing a sustainable change in the ways applied health research is conducted and implemented may be influenced by how effectively these organisations can navigate through the multiple CoPs involved and promote the development of new multiprofessional and multi-organisational communities united by shared practice and a shared sense of belonging--an assumption that needs to be explored by further empirical research.

Patient-reported physical activity questionnaires: A systematic review of content and format

PubMed Central

2012-01-01

Background Many patients with chronic illness are limited in their physical activities. This systematic review evaluates the content and format of patient-reported outcome (PRO) questionnaires that measure physical activity in elderly and chronically ill populations. Methods Questionnaires were identified by a systematic literature search of electronic databases (Medline, Embase, PsychINFO & CINAHL), hand searches (reference sections and PROQOLID database) and expert input. A qualitative analysis was conducted to assess the content and format of the questionnaires and a Venn diagram was produced to illustrate this. Each stage of the review process was conducted by at least two independent reviewers. Results 104 questionnaires fulfilled our criteria. From these, 182 physical activity domains and 1965 items were extracted. Initial qualitative analysis of the domains found 11 categories. Further synthesis of the domains found 4 broad categories: 'physical activity related to general activities and mobility', 'physical activity related to activities of daily living', 'physical activity related to work, social or leisure time activities', and '(disease-specific) symptoms related to physical activity'. The Venn diagram showed that no questionnaires covered all 4 categories and that the '(disease-specific) symptoms related to physical activity' category was often not combined with the other categories. Conclusions A large number of questionnaires with a broad range of physical activity content were identified. Although the content could be broadly organised, there was no consensus on the content and format of physical activity PRO questionnaires in elderly and chronically ill populations. Nevertheless, this systematic review will help investigators to select a physical activity PRO questionnaire that best serves their research question and context. PMID:22414164

A summary to communicate evidence from systematic reviews to the public improved understanding and accessibility of information: a randomized controlled trial.

PubMed

Santesso, Nancy; Rader, Tamara; Nilsen, Elin Strømme; Glenton, Claire; Rosenbaum, Sarah; Ciapponi, Agustín; Moja, Lorenzo; Pardo, Jordi Pardo; Zhou, Qi; Schünemann, Holger J

2015-02-01

To evaluate a new format of a summary, which presents research from synthesized evidence to patients and the public. We conducted a randomized controlled trial in 143 members of the public from five countries (Canada, Norway, Spain, Argentina, and Italy). Participants received either a new summary format (a plain language summary [PLS]) or the current format used in Cochrane systematic reviews. The new PLS presents information about the condition and intervention, a narrative summary of results, and a table of results with absolute numbers for effects of the intervention and quality of the evidence using Grading of Recommendations Assessment, Development, and Evaluation. With the new PLS, more participants understood the benefits and harms and quality of evidence (53% vs. 18%, P < 0.001); more answered each of the five questions correctly (P ≤ 0.001 for four questions); and they answered more questions correctly, median 3 (interquartile range [IQR]: 1-4) vs. 1 (IQR: 0-1), P < 0.001). Better understanding was independent of education level. More participants found information in the new PLS reliable, easy to find, easy to understand, and presented in a way that helped make decisions. Overall, participants preferred the new PLS. This new PLS format for patients and the public is a promising tool to translate evidence from synthesized research. Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.

Studies of extra-solar Oort clouds and the Kuiper disk

NASA Technical Reports Server (NTRS)

Stern, S. Alan

1996-01-01

We are conducting research designed to enhance our understanding of the evolution and detectability of comet clouds and disks. According to 'standard' theory, both the Kuiper Belt and the Oort Cloud are (at least in part) natural products of the planetary accumulation stage of solar system formation. One expects such assemblages to be a common attribute of other solar systems. Therefore, searches for comet disks and clouds orbiting other stars offer a new method for inferring the presence of planetary systems. This project consists of two efforts: (1) observational work to predict and search for the signatures of Oort Clouds and comet disks around other stars; and (2) modelling studies of the formation and evolution of the Kuiper Belt (KB) and similar assemblages that may reside around other stars, including beta Pic.

Impacts of heterogeneous reactions to atmospheric peroxides: Observations and budget analysis study

NASA Astrophysics Data System (ADS)

Qin, Mengru; Chen, Zhongming; Shen, Hengqing; Li, Huan; Wu, Huihui; Wang, Yin

2018-06-01

Atmospheric peroxides play important roles in atmospheric chemistry, acting as reactive oxidants and reservoirs of HOX and ROX radicals. Field measurements of atmospheric peroxides were conducted over urban Beijing from 2015 to 2016, including dust storm days, haze days and different seasons. We employed a box model based on RACM2 mechanism to conduct concentration simulation and budget analysis of hydrogen peroxide (H2O2) and peroxyacetic acid (PAA). In this study, heterogeneous reaction is found to be a significant sink for atmospheric H2O2 and PAA in urban Beijing. Here, we recommend a suitable uptake coefficient formula considering the water effect for model research of peroxides. It is found that H2O2 and PAA unexpectedly maintained considerable concentrations on haze days, even higher than that on non-haze days. This phenomenon is mainly ascribed to relatively high levels of volatile organic compounds and ozone on haze days. In addition, high levels of water vapor in pollution episode can promote not only the heterogeneous uptake to aerosol phase but also the production of H2O2. Atmospheric PAA formation is suggested to be sensitive to alkenes and NOX in urban Beijing. In particular, with the help of peroxides, sulfate formation rate from heterogeneous uptake could increase by ∼4 times on haze days, indicating the potential effect of peroxides on enhancement of aerosol oxidative property and secondary sulfate formation.

Improved Characterization and Modeling of Tight Oil Formations for CO 2 Enhanced Oil Recovery Potential and Storage Capacity Estimation

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sorensen, James; Smith, Steven; Kurz, Bethany

Tight oil formations such as those in the Bakken petroleum system are known to hold hundreds of billions of barrels of oil in place; however, the primary recovery factor for these plays is typically less than 10%. Tight oil formations, including the Bakken Formation, therefore, may be attractive candidates for enhanced oil recovery (EOR) using CO 2. Multiphase fluid behavior and flow in fluid-rich shales can vary substantially depending on the size of pore throats, and properties such as fluid viscosity and density are much different in nanoscale pores than in macroscale pores. Thus it is critical to understand themore » nature and distribution of nano-, micro-, and macroscale pores and fracture networks. To address these issues, the Energy & Environmental Research Center (EERC) has been conducting a research program entitled “Improved Characterization and Modeling of Tight Oil Formations for CO 2 Enhanced Oil Recovery Potential and Storage Capacity Estimation.” The objectives of the project are 1) the use of advanced characterization methods to better understand and quantify the petrophysical and geomechanical factors that control CO 2 and oil mobility within tight oil formation samples, 2) the determination of CO 2 permeation and oil extraction rates in tight reservoir rocks and organic-rich shales of the Bakken, and 3) the integration of the laboratory-based CO 2 permeation and oil extraction data and the characterization data into geologic models and dynamic simulations to develop predictions of CO 2 storage resource and EOR in the Bakken tight oil formation. A combination of standard and advanced petrophysical characterization techniques were applied to characterize samples of Bakken Formation tight reservoir rock and shales from multiple wells. Techniques included advanced computer tomography (CT) imaging, scanning electron microscopy (SEM) techniques, whole-core and micro x-ray CT imaging, field emission (FE) SEM, and focused ion beam (FIB) SEM. Selected samples were also analyzed for geomechanical properties. X-ray CT imaging yielded information on the occurrence of fractures, bedding planes, fossils, and bioturbation in core, as well as data on bulk density and photoelectric factor logs, which were used to interpret porosity, organic content, and mineralogy. FESEM was used for characterization of nano- and microscale features, including nanoscale pore visualization and micropore and pore throat mineralogy. FIBSEM yielded micro- to nanoscale visualization of fracture networks, porosity and pore-size distribution, connected versus isolated porosity, and distribution of organics. Results from the characterization activities provide insight on nanoscale fracture properties, pore throat mineralogy and connectivity, rock matrix characteristics, mineralogy, and organic content. Laboratory experiments demonstrated that CO 2 can permeate the tight matrix of Bakken shale and nonshale reservoir samples and mobilize oil from those samples. Geologic models were created at scales ranging from the core plug to the reservoir, and dynamic simulations were conducted. The data from the characterization and laboratory-based activities were integrated into modeling research activities to determine the fundamental mechanisms controlling fluid transport in the Bakken, which support EOR scheme design and estimation of CO 2 storage potential in tight oil formations. Simulation results suggest a CO 2 storage resource estimate range of 169 million to 1.5 billion tonnes for the Bakken in North Dakota, possibly resulting in 1.8 billion to 16 billion barrels of incremental oil.« less

Application of Coaxial Ion Gun for Film Generation and Ion Implantation

NASA Astrophysics Data System (ADS)

Takatsu, Mikio; Asai, Tomohiko; Kurumi, Satoshi; Suzuki, Kaoru; Hirose, Hideharu; Masutani, Shigeyuki

A magnetized coaxial plasma gun (MCPG) is here utilized for deposition on high-melting-point metals. MCPGs have hitherto been studied mostly in the context of nuclear fusion research, for particle and magnetic helicity injection and spheromak formation. During spheromak formation, the electrode materials are ionized and mixed into the plasmoid. In this study, this ablation process by gun-current sputtering is enhanced for metallic thin-film generation. In the proposed system geometry, only ionized materials are electromagnetically accelerated by the self-Lorentz force, with ionized operating gas as a magnetized thermal plasmoid, contributing to the thin-film deposition. This reduces the impurity and non-uniformity of the deposited thin-film. Furthermore, as the ions are accelerated in a parallel direction to the injection axis, vertical implantation of the ions into the substrate surface is achieved. To test a potential application of the developed system, experiments were conducted involving the formation of a buffer layer on hard ceramics, for use in dental materials.

Exploring the Use of Audience Response Systems in Secondary School Science Classrooms

NASA Astrophysics Data System (ADS)

Kay, Robin; Knaack, Liesel

2009-10-01

An audience response systems (ARS) allows students to respond to multiple choice questions using remote control devices. Once the feedback is collected and displayed, the teacher and students discuss misconceptions and difficulties experienced. ARSs have been extremely popular and effective in higher education science classrooms, although almost no research has been done at the secondary school level. The purpose of this study was to conduct a detailed formative analysis of the benefits, challenges, and use of ARSs from the perspective of 213 secondary school science students. Perceived benefits were increased student involvement (engagement, participation, and attention) and effective formative assessment of student understanding. Perceived challenges included decreased student involvement and learning when ARSs were used for summative assessment, occasional technological malfunctions, resistance to using a new method of learning, and increased stress due to time constraints when responding to questions. Finally, students rated the use of ARSs significantly higher when it was used for formative as opposed to summative assessment.

[Anatomy typological and clinical parallels in case of disturbance of soft tissue formations of shoulder girdle].

PubMed

Volkov, A V; Shutov, Iu M; Shutova, M Z

2012-01-01

The influence of anthropology on topographical anatomical structure peculiarities of soft tissue formations of shoulder girdle has been investigated. The dependence of anatomical structure and topography of muscles, ligaments, tendon sheaths, synovial bursae, rotator cuffs on patient's body constitution type has been examined. The influence of a somatotype on topical damage of soft tissue structures of shoulder girdle has been proved. The so-called "holes" or weak areas, joint capsules, places where ligaments attach to bones and cartilages, where vascular formations also take place have been revealed. It is in these areas that degenerative inflammatory process begins. First of all this process influences hemolymph circulation, then it results in disturbance in production and resorption of synovial fluid and causes destructive processes in ligaments, tendons and osteochondral tissue. Due to research the ability to conduct differential diagnosis has been determined, methods of modality treatment and prevention of periarticular tissue diseases have been optimized.

Challenges of cross-cultural research: lessons from a U.S.-Asia HIV collaboration.

PubMed

Chen, Wei-Ti; Shiu, Cheng-Shi; Simoni, Jane M; Chuang, Peing; Zhao, Hongxin; Bao, Meijuan; Lu, Hongzhou

2013-01-01

Many Asian countries have scaled up their research to combat human immunodeficiency virus (HIV). HIV experts from the West have teamed up with these countries to assist in designing research protocols and providing necessary training. In this paper, we document the formation and maintenance of international and interdisciplinary HIV research collaboration among cross-disciplinary researchers working in the United States, Taiwan, and China. We conducted international social-behavioral HIV studies in several major metropolitan areas in Asia. Culturally sensitive issues that could be attributed to social and disciplinary differences have emerged throughout the collaboration process, including questions of who should be the research leader, where should resources be allocated, how should tasks be shared, which topics are valuable for investigation, and what survey questions are allowable. There is now a window of opportunity for greater international and interdisciplinary collaboration; however, for such collaboration to flourish, team dynamics in international research collaboration should be carefully identified and managed before studies are begun. Copyright © 2013 Elsevier Inc. All rights reserved.

Challenges of cross-cultural research: Lessons from a U.S.-Asia HIV collaboration

PubMed Central

Chen, Wei-Ti; Shiu, Cheng-Shi; Simoni, Jane M.; Chuang, Peing; Zhao, Hongxin; Bao, Meijuan; Lu, Hongzhou

2013-01-01

Many Asian countries have scaled up their research to combat human immunodeficiency virus (HIV). HIV experts from the West have teamed up with these countries to assist in designing research protocols and providing necessary training. In this paper, we document the formation and maintenance of international and interdisciplinary HIV research collaboration among cross-disciplinary researchers working in the United States, Taiwan, and China. We conducted international social-behavioral HIV studies in several major metropolitan areas in Asia. Culturally sensitive issues that could be attributed to social and disciplinary differences have emerged throughout the collaboration process, including questions of who should be the research leader, where should resources be allocated, how should tasks be shared, which topics are valuable for investigation, and what survey questions are allowable. There is now a window of opportunity for greater international and interdisciplinary collaboration; however, for such collaboration to flourish, team dynamics in international research collaboration should be carefully identified and managed before studies are begun. PMID:23419838

Minority recruitment in clinical trials: a conference at Tuskegee, researchers and the community.

PubMed

Fouad, M N; Partridge, E; Green, B L; Kohler, C; Wynn, T; Nagy, S; Churchill, S

2000-11-01

This article describes the planning, implementation, and evaluation of a 2-day conference designed to examine the factors related to the participation of African Americans in cancer clinical trials. Pre-conference formative evaluations (e.g., focus group discussions and key informant interviews with community leaders and health providers) were conducted in several rural and urban counties in the state of Alabama to determine African Americans' perceptions of participation in clinical research. The findings from these evaluations were used to develop a conference format and agenda. The 2-day conference included: (i) a pretest of African Americans' perceptions of cancer research, participation factors, and communication and recruitment issues; (ii) individual presentations high-lighting community leaders, church leaders, and researchers' perspectives regarding minority participation in research; (iii) working group discussions regarding the barriers and solutions to minority participation in research; and (iv) a posttest evaluation to measure changes in African Americans' perceptions of research. Several recruitment barriers and solutions were identified and reported by the working groups. Comparisons of the pretest and posttest measures showed significant (p > .05) and favorable shifts in the areas of perceptions of cancer research, participation factors, communication issues, and recruitment issues. Participation in the conference reflected a positive change in attitudes on these measures. However, the theme, "barriers that contributed to nonparticipation," did not show any significant changes during the two testing periods. The most critical lesson that resulted from this conference was the need for researchers and community members to have open dialogue about participation in research. This conference demonstrated that progress can be made when all parties are at the "table" and can be heard. In this model, community members proved to be valuable resources in providing researchers with information that was vital to the success of recruitment and retention studies and trials.

Recommendations for designing and conducting veterinary clinical pathology biologic variation studies.

PubMed

Freeman, Kathleen P; Baral, Randolph M; Dhand, Navneet K; Nielsen, Søren Saxmose; Jensen, Asger L

2017-06-01

The recent creation of a veterinary clinical pathology biologic variation website has highlighted the need to provide recommendations for future studies of biologic variation in animals in order to help standardize and improve the quality of published information and to facilitate review and selection of publications as standard references. The following recommendations are provided in the format and order commonly found in veterinary publications. A checklist is provided to aid in planning, implementing, and evaluating veterinary studies on biologic variation (Appendix S1). These recommendations provide a valuable resource for clinicians, laboratorians, and researchers interested in conducting studies of biologic variation and in determining the quality of studies of biologic variation in veterinary laboratory testing. © 2017 American Society for Veterinary Clinical Pathology.

Tungsten-microdiamond composites for plasma facing components

NASA Astrophysics Data System (ADS)

Livramento, V.; Nunes, D.; Correia, J. B.; Carvalho, P. A.; Mardolcar, U.; Mateus, R.; Hanada, K.; Shohoji, N.; Fernandes, H.; Silva, C.; Alves, E.

2011-09-01

Tungsten is considered as one of promising candidate materials for plasma facing component in nuclear fusion reactors due to its resistance to sputtering and high melting point. High thermal conductivity is also a prerequisite for plasma facing components under the unique service environment of fusion reactor characterised by the massive heat load, especially in the divertor area. The feasibility of mechanical alloying of nanodiamond and tungsten, and the consolidation of the composite powders with Spark Plasma Sintering (SPS) was previously demonstrated. In the present research we report on the use of microdiamond instead of nanodiamond in such composites. Microdiamond is more favourable than nanodiamond in view of phonon transport performance leading to better thermal conductivity. However, there is a trade off between densification and thermal conductivity as the SPS temperature increases tungsten carbide formation from microdiamond is accelerated inevitably while the consolidation density would rise.

The availability of hydrogeologic data associated with areas identified by the US Geological Survey as experiencing potentially induced seismicity resulting from subsurface injection

NASA Astrophysics Data System (ADS)

Barnes, Caitlin; Halihan, Todd

2018-05-01

A critical need exists for site-specific hydrogeologic data in order to determine potential hazards of induced seismicity and to manage risk. By 2015, the United States Geological Survey (USGS) had identified 17 locations in the USA that are experiencing an increase in seismicity, which may be potentially induced through industrial subsurface injection. These locations span across seven states, which vary in geological setting, industrial exposure and seismic history. Comparing the research across the 17 locations revealed patterns for addressing induced seismicity concerns, despite the differences between geographical locations. Most induced seismicity studies evaluate geologic structure and seismic data from areas experiencing changes in seismic activity levels, but the inherent triggering mechanism is the transmission of hydraulic pressure pulses. This research conducted a systematic review of whether data are available in these locations to generate accurate hydrogeologic predictions, which could aid in managing seismicity. After analyzing peer-reviewed research within the 17 locations, this research confirms a lack of site-specific hydrogeologic data availability for at-risk areas. Commonly, formation geology data are available for these sites, but hydraulic parameters for the seismically active injection and basement zones are not available to researchers conducting peer-reviewed research. Obtaining hydrogeologic data would lead to better risk management for injection areas and provide additional scientific evidential support for determining a potentially induced seismic area.

Review of ammonia emission factors for United States animal agriculture

NASA Astrophysics Data System (ADS)

Faulkner, W. B.; Shaw, B. W.

Ammonia emissions from agricultural industries are a significant source of atmospheric reactive nitrogen, which can lead to negative environmental consequences such as ecosystem change and formation of fine particulate. While a number of emission factors (EFs) have been proposed for developing ammonia emissions inventories for the US, most are based on European research with little discussion of their applicability to US production systems. Recently developed ammonia EFs from literature for animal feeding operations (AFOs), including production facilities for beef and dairy cattle, swine, and poultry, are presented. Tentative EFs for US animal agriculture are suggested until further research can be conducted. Currently, there is a dearth of EFs developed specifically for agricultural production practices in the US.

Rare-Earth-Free Permanent Magnets for Electrical Vehicle Motors and Wind Turbine Generators: Hexagonal Symmetry Based Materials Systems Mn-Bi and M-type Hexaferrite

DOE Office of Scientific and Technical Information (OSTI.GOV)

Hong, Yang-Ki; Haskew, Timothy; Myryasov, Oleg

2014-06-05

The research we conducted focuses on the rare-earth (RE)-free permanent magnet by modeling, simulating, and synthesizing exchange coupled two-phase (hard/soft) RE-free core-shell nano-structured magnet. The RE-free magnets are made of magnetically hard core materials (high anisotropy materials including Mn-Bi-X and M-type hexaferrite) coated by soft shell materials (high magnetization materials including Fe-Co or Co). Therefore, our research helps understand the exchange coupling conditions of the core/shell magnets, interface exchange behavior between core and shell materials, formation mechanism of core/shell structures, stability conditions of core and shell materials, etc.

Assessing aspects of creativity in deaf and hearing high school students.

PubMed

Stanzione, Christopher M; Perez, Susan M; Lederberg, Amy R

2013-04-01

To address the paucity of current research on the development of creativity in deaf students, and to extend existing research to adolescents, the present study investigated divergent thinking, a method of assessing creativity, in both deaf and hearing adolescents. We assessed divergent thinking in two domains, figural and verbal, while also adjusting the instructional method in written format, sign language, or spoken English. Deaf students' performance was equal to, or more creative than, hearing students on the figural assessment of divergent thinking, but less creative on the verbal assessment. Additional studies should be conducted to determine whether this was an anomalous finding or one that might contribute to hypotheses yielding effective interventions.

Formation of algae growth constitutive relations for improved algae modeling.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gharagozloo, Patricia E.; Drewry, Jessica Louise.

This SAND report summarizes research conducted as a part of a two year Laboratory Directed Research and Development (LDRD) project to improve our abilities to model algal cultivation. Algae-based biofuels have generated much excitement due to their potentially large oil yield from relatively small land use and without interfering with the food or water supply. Algae mitigate atmospheric CO2 through metabolism. Efficient production of algal biofuels could reduce dependence on foreign oil by providing a domestic renewable energy source. Important factors controlling algal productivity include temperature, nutrient concentrations, salinity, pH, and the light-to-biomass conversion rate. Computational models allow for inexpensivemore » predictions of algae growth kinetics in these non-ideal conditions for various bioreactor sizes and geometries without the need for multiple expensive measurement setups. However, these models need to be calibrated for each algal strain. In this work, we conduct a parametric study of key marine algae strains and apply the findings to a computational model.« less

Numerical simulation of the effect of groundwater salinity on artificial freezing wall in coastal area

NASA Astrophysics Data System (ADS)

Hu, Rui; Liu, Quan

2017-04-01

During the engineering projects with artificial ground freezing (AFG) techniques in coastal area, the freezing effect is affected by groundwater salinity. Based on the theories of artificially frozen soil and heat transfer in porous material, and with the assumption that only the variations of total dissolved solids (TDS) impact on freezing point and thermal conductivity, a numerical model of an AFG project in a saline aquifer was established and validated by comparing the simulated temperature field with the calculated temperature based on the analytic solution of rupak (reference) for single-pipe freezing temperature field T. The formation and development of freezing wall were simulated with various TDS. The results showed that the variety of TDS caused the larger temperature difference near the frozen front. With increasing TDS in the saline aquifer (1 35g/L), the average thickness of freezing wall decreased linearly and the total formation time of the freezing wall increased linearly. Compared with of the scenario of fresh-water (<1g/L), the average thickness of frozen wall decreased by 6% and the total formation time of the freezing wall increased by 8% with each increasing TDS of 7g/L. Key words: total dissolved solids, freezing point, thermal conductivity, freezing wall, numerical simulation Reference D.J.Pringel, H.Eicken, H.J.Trodahl, etc. Thermal conductivity of landfast Antarctic and Arctic sea ice[J]. Journal of Geophysical Research, 2007, 112: 1-13. Lukas U.Arenson, Dave C.Sego. The effect of salinity on the freezing of coarse- grained sand[J]. Canadian Geotechnical Journal, 2006, 43: 325-337. Hui Bing, Wei Ma. Laboratory investigation of the freezing point of saline soil[J]. Cold Regions Science and Technology, 2011, 67: 79-88.

Work Hardening Behavior of 1020 Steel During Cold-Beating Simulation

NASA Astrophysics Data System (ADS)

CUI, Fengkui; LING, Yuanfei; XUE, Jinxue; LIU, Jia; LIU, Yuhui; LI, Yan

2017-03-01

The present research of cold-beating formation mainly focused on roller design and manufacture, kinematics, constitutive relation, metal flow law, thermo-mechanical coupling, surface micro-topography and microstructure evolution. However, the research on surface quality and performance of workpieces in the process of cold-beating is rare. Cold-beating simulation experiment of 1020 steel is conducted at room temperature and strain rates ranging from 2000 to 4000 s-1 base on the law of plastic forming. According to the experimental data, the model of strain hardening of 1020 steel is established, Scanning Electron Microscopy(SEM) is conducted, the mechanism of the work hardening of 1020 steel is clarified by analyzing microstructure variation of 1020 steel. It is found that the strain rate hardening effect of 1020 steel is stronger than the softening effect induced by increasing temperatures, the process of simulation cold-beating cause the grain shape of 1020 steel significant change and microstructure elongate significantly to form a fibrous tissue parallel to the direction of deformation, the higher strain rate, the more obvious grain refinement and the more hardening effect. Additionally, the change law of the work hardening rate is investigated, the relationship between dislocation density and strain, the relationship between work hardening rate and dislocation density is obtained. Results show that the change trend of the work hardening rate of 1020 steel is divided into two stages, the work hardening rate decreases dramatically in the first stage and slowly decreases in the second stage, finally tending toward zero. Dislocation density increases with increasing strain and strain rate, work hardening rate decreases with increasing dislocation density. The research results provide the basis for solving the problem of improving the surface quality and performance of workpieces under cold-beating formation of 1020 steel.

Conductivity affects nanosecond electrical pulse induced pressure transient formation

NASA Astrophysics Data System (ADS)

Roth, Caleb C.; Barnes, Ronald A.; Ibey, Bennett L.; Beier, Hope T.; Glickman, Randolph D.

2016-03-01

Nanoporation occurs in cells exposed to high amplitude short duration (< 1μs) electrical pulses. The biophysical mechanism(s) responsible for nanoporation is unknown although several theories exist. Current theories focus exclusively on the electrical field, citing electrostriction, water dipole alignment and/or electrodeformation as the primary mechanisms for pore formation. Our group has shown that mechanical forces of substantial magnitude are also generated during nsEP exposures. We hypothesize that these mechanical forces may contribute to pore formation. In this paper, we report that alteration of the conductivity of the exposure solution also altered the level of mechanical forces generated during a nsEP exposure. By reducing the conductivity of the exposure solutions, we found that we could completely eliminate any pressure transients normally created by nsEP exposure. The data collected for this proceeding does not definitively show that the pressure transients previously identified contribute to nanoporation; however; it indicates that conductivity influences both survival and pressure transient formation.

Synthesis of oxide-free aluminum nanoparticles for application to conductive film

NASA Astrophysics Data System (ADS)

Jong Lee, Yung; Lee, Changsoo; Lee, Hyuck Mo

2018-02-01

Aluminum nanoparticles are considered promising as alternatives to conventional ink materials, replacing silver and copper nanoparticles, due to their extremely low cost and low melting temperature. However, a serious obstacle to realizing their use as conductive ink materials is the oxidation of aluminum. In this research, we synthesized the oxide-free aluminum nanoparticles using catalytic decomposition and an oleic acid coating method, and these materials were applied to conductive ink for the first time. The injection time of oleic acid determines the size of the aluminum nanoparticles by forming a self-assembled monolayer on the nanoparticles instead of allowing the formation of an oxide phase. Fabricated nanoparticles were analyzed by transmission electron microscopy and x-ray photoelectron spectroscopy to verify their structural and chemical composition. In addition, conductive inks made of these nanoparticles exhibit electrical properties when they are sintered at over 300 °C in a reducing atmosphere. This result shows that aluminum nanoparticles can be used as an alternative conductive material in printed electronics and can solve the cost issues associated with noble metals.

How spatial abilities and dynamic visualizations interplay when learning functional anatomy with 3D anatomical models.

PubMed

Berney, Sandra; Bétrancourt, Mireille; Molinari, Gaëlle; Hoyek, Nady

2015-01-01

The emergence of dynamic visualizations of three-dimensional (3D) models in anatomy curricula may be an adequate solution for spatial difficulties encountered with traditional static learning, as they provide direct visualization of change throughout the viewpoints. However, little research has explored the interplay between learning material presentation formats, spatial abilities, and anatomical tasks. First, to understand the cognitive challenges a novice learner would be faced with when first exposed to 3D anatomical content, a six-step cognitive task analysis was developed. Following this, an experimental study was conducted to explore how presentation formats (dynamic vs. static visualizations) support learning of functional anatomy, and affect subsequent anatomical tasks derived from the cognitive task analysis. A second aim was to investigate the interplay between spatial abilities (spatial visualization and spatial relation) and presentation formats when the functional anatomy of a 3D scapula and the associated shoulder flexion movement are learned. Findings showed no main effect of the presentation formats on performances, but revealed the predictive influence of spatial visualization and spatial relation abilities on performance. However, an interesting interaction between presentation formats and spatial relation ability for a specific anatomical task was found. This result highlighted the influence of presentation formats when spatial abilities are involved as well as the differentiated influence of spatial abilities on anatomical tasks. © 2015 American Association of Anatomists.

Artificial time constraints on the Iowa Gambling Task: the effects on behavioural performance and subjective experience.

PubMed

Bowman, Caroline H; Evans, Cathryn E Y; Turnbull, Oliver H

2005-02-01

In the last decade, the Iowa Gambling Task (IGT) has become a widely employed neuropsychological research instrument for the investigation of executive function. The task has been employed in a wide range of formats, from 'manual' procedures to more recently introduced computerised versions. Computer-based formats often require that responses on the task should be artificially delayed by a number of seconds between trials to collect skin-conductance data. Participants, however, may become frustrated when they want to select from a particular deck in the time-limited versions--so that an unintended emotional experience of frustration might well disrupt a task presumed to be reliant on emotion-based learning. We investigated the effect of the various types of Iowa Gambling Task format on performance, using three types of task: the classic manual administration, with no time limitations; a computerised administration with a 6-s enforced delay; and a control computerised version which had no time constraints. We also evaluated the subjective experience of participants on each task. There were no significant differences in performance, between formats, in behavioural terms. Subjective experience measures on the task also showed consistent effects across all three formats-with substantial, and rapidly developing, awareness of which decks were 'good' and 'bad.'

Protonic Conduction of BaCe0.85YO. 1503 Doped with SrTiO3

NASA Technical Reports Server (NTRS)

Dynys, Frederick W.; Sayir, Ali

2005-01-01

Reformers based on ceramic membrane technology potentially offer hydrogen production that is comparable to the cost of fossil fuels. Protonic conducting ceramic with the chemical formula AB03 offers the promise of highly selective hydrogen separation at intermediate temperature (400-800 C). Among different perovskite-type oxides, BaCe03 and SrCe03 based compositions show high protonic conductivities but strong resistance to densification. X-ray diffraction studies on sintered specimens of BaCe0.85Y0.1503-6 show multi-phase formation which was found to show dependence upon powder synthesis method. Doping with SrTiO3 suppresses multi-phase formation and enhances grain growth. Conductivity measurements in temperature range of 200 to 1000 C were performed by ac impedance spectroscopy under dry and wet conditions. Sintering behavior, phase formation and conductivity results will be reported.

Process Improvement for Interinstitutional Research Contracting

PubMed Central

Logan, Jennifer; Bjorklund, Todd; Whitfield, Jesse; Reed, Peggy; Lesher, Laurie; Sikalis, Amy; Brown, Brent; Drollinger, Sandy; Larrabee, Kristine; Thompson, Kristie; Clark, Erin; Workman, Michael; Boi, Luca

2015-01-01

Abstract Introduction Sponsored research increasingly requires multiinstitutional collaboration. However, research contracting procedures have become more complicated and time consuming. The perinatal research units of two colocated healthcare systems sought to improve their research contracting processes. Methods The Lean Process, a management practice that iteratively involves team members in root cause analyses and process improvement, was applied to the research contracting process, initially using Process Mapping and then developing Problem Solving Reports. Results Root cause analyses revealed that the longest delays were the individual contract legal negotiations. In addition, the “business entity” was the research support personnel of both healthcare systems whose “customers” were investigators attempting to conduct interinstitutional research. Development of mutually acceptable research contract templates and language, chain of custody templates, and process development and refinement formats decreased the Notice of Grant Award to Purchase Order time from a mean of 103.5 days in the year prior to Lean Process implementation to 45.8 days in the year after implementation (p = 0.004). Conclusions The Lean Process can be applied to interinstitutional research contracting with significant improvement in contract implementation. PMID:26083433

Mutual Distrust: Perspectives From Researchers and Policy Makers on the Research to Policy Gap in 2013 and Recommendations for the Future

PubMed Central

Gollust, Sarah E.; Seymour, Jane W.; Pany, Maximilian J.; Goss, Adeline; Meisel, Zachary F.; Grande, David

2017-01-01

The production of health policy-relevant research is necessary, but not sufficient, to promote its utilization in policy. Our objective was to understand the perspectives of United States’ state-level policy makers and health researchers on the barriers and facilitators to the translation of health evidence into the policy process, with a particular focus on issues related to relationship building. We conducted interviews with 215 US health services and health policy researchers and 40 state-level staffers and legislators. Researchers and policy makers faced the same major barrier to research translation: lack of dedicated time to do so. Some policy makers questioned the credibility of research, and researchers questioned policy makers’ authentic desire to use evidence in decision making. For some study participants, a mutual mistrust of the other group challenges stronger relationship formation. Interventions are needed to help both groups understand a broader role that research plays in policy making and to increase personal contact, and ultimately trusted relationships, across various actors in the policy process. PMID:28452251

Process Improvement for Interinstitutional Research Contracting.

PubMed

Varner, Michael; Logan, Jennifer; Bjorklund, Todd; Whitfield, Jesse; Reed, Peggy; Lesher, Laurie; Sikalis, Amy; Brown, Brent; Drollinger, Sandy; Larrabee, Kristine; Thompson, Kristie; Clark, Erin; Workman, Michael; Boi, Luca

2015-08-01

Sponsored research increasingly requires multiinstitutional collaboration. However, research contracting procedures have become more complicated and time consuming. The perinatal research units of two colocated healthcare systems sought to improve their research contracting processes. The Lean Process, a management practice that iteratively involves team members in root cause analyses and process improvement, was applied to the research contracting process, initially using Process Mapping and then developing Problem Solving Reports. Root cause analyses revealed that the longest delays were the individual contract legal negotiations. In addition, the "business entity" was the research support personnel of both healthcare systems whose "customers" were investigators attempting to conduct interinstitutional research. Development of mutually acceptable research contract templates and language, chain of custody templates, and process development and refinement formats decreased the Notice of Grant Award to Purchase Order time from a mean of 103.5 days in the year prior to Lean Process implementation to 45.8 days in the year after implementation (p = 0.004). The Lean Process can be applied to interinstitutional research contracting with significant improvement in contract implementation. © 2015 Wiley Periodicals, Inc.

Formative research and development of innovative tools for "Better Outcomes in Labour Difficulty" (BOLD): study protocol.

PubMed

Bohren, Meghan A; Oladapo, Olufemi T; Tunçalp, Özge; Wendland, Melanie; Vogel, Joshua P; Tikkanen, Mari; Fawole, Bukola; Mugerwa, Kidza; Souza, João Paulo; Bahl, Rajiv; Gülmezoglu, A Metin

2015-05-26

Most complications during labour and childbirth could be averted with timely interventions by skilled healthcare providers. Yet, the quality and outcomes of childbirth care remains suboptimal in many health facilities in low-resource settings. To accelerate the reduction of childbirth-related maternal, fetal and newborn mortality and morbidity, the World Health Organization has initiated the "Better Outcomes in Labour Difficulty" (BOLD) project to address weaknesses in labour care processes and better connect health systems and communities. The project seeks to develop a "Simplified, Effective, Labour Monitoring-to-Action" tool (SELMA) to assist healthcare providers to monitor labour and take decisive actions more efficiently; and by developing an innovative set of service prototypes and/or tools termed "Passport to Safer Birth", designed with communities and healthcare providers, to promote access to quality care for women during childbirth. This protocol describes the formative research activities to support the development of these tools. We will employ qualitative research and service design methodologies in eight health facilities and their catchment communities in Nigeria and Uganda. In the health facilities, focus group discussions (FGD) and in-depth interviews (IDI) will be conducted among different cadres of healthcare providers and facility administrators. In the communities, FGDs and IDIs will be conducted among women who have delivered in a health facility. We will use service design methods to explore women's journey to access and receive childbirth care in order to innovate and design services around the needs and expectations of women, within the context of the health system. This formative research will serve several roles. First, it will provide an in-depth understanding of healthcare providers and health system issues to be accounted for in the final design and implementation of SELMA. Second, it will help to identify key moments ("touch points") where women's experiences of childbirth care are shaped, and where the overall experience of quality care could be improved. The synthesis of findings from the qualitative and service design activities will help identify potential areas for behaviour change related to the provision and experience of childbirth care, and serve as the basis for the development of Passport to Safer Birth. Please see related articles 'http://dx.doi.org/ 10.1186/s12978-015-0027-6 ' and 'http://dx.doi.org/ 10.1186/s12978-015-0029-4 '.

Reactive and multiphase modelling for the identification of monitoring parameters to detect CO2 intrusion into freshwater aquifers

NASA Astrophysics Data System (ADS)

Fahrner, S.; Schaefer, D.; Wiegers, C.; Köber, R.; Dahmke, A.

2011-12-01

A monitoring at geological CO2 storage sites has to meet environmental, regulative, financial and public demands and thus has to enable the detection of CO2 leakages. Current monitoring concepts for the detection of CO2 intrusion into freshwater aquifers located above saline storage formations in course of leakage events lack the identification of monitoring parameters. Their response to CO2 intrusion still has to be enlightened. Scenario simulations of CO2 intrusion in virtual synthetic aquifers are performed using the simulators PhreeqC and TOUGH2 to reveal relevant CO2-water-mineral interactions and multiphase behaviour on potential monitoring parameters. The focus is set on pH, total dissolved inorganic carbon (TIC) and the hydroelectric conductivity (EC). The study aims at identifying at which conditions the parameters react rapidly, durable and in a measurable degree. The depth of the aquifer, the mineralogy, the intrusion rates, the sorption specification and capacities, and groundwater flow velocities are varied in the course of the scenario modelling. All three parameters have been found suited in most scenarios. However, in case of a lack of calcite combined with low saturation of the water with respect to CO2 and shallow conditions, changes are close to the measurement resolution. Predicted changes in EC result from the interplay between carbonic acid production and its dissociation, and pH buffering by mineral dissolution. The formation of a discrete gas phase in cases of full saturation of the groundwater in confined aquifers illustrates the potential bipartite resistivity response: An increased hydroelectric conductivity at locations with dissolved CO2, and a high resistivity where the gas phase dominates the pore volume occupation. Increased hydrostatic pressure with depth and enhanced groundwater flow velocities enforce gas dissolution and diminish the formation of a discrete gas phase. Based on the results, a monitoring strategy is proposed which combines electromagnetic surface and in-situ geochemical measurements: The changes in formation resistivity / hydroelectric conductivity could be used as "first-level" parameter to identify potential intrusion locations. Subsequent targeted drilling and probe measurements of pH and TIC could be used to reject or confirm an intrusion event. Further sampling and analysis can be performed at this stage for the impact assessment if required. Next to considering regulative, environmental and public aspects, the approach helps to reduce financial strains by significantly lowering the number of required monitoring wells. This study is funded by the German Federal Ministry of Education and Research (BMBF), EnBW Energie Baden-Württemberg AG, E.ON Energie AG, E.ON Gas Storage AG, RWE Dea AG, Vattenfall Europe Technology Research GmbH, Wintershall Holding AG and Stadtwerke Kiel AG as part of the CO2-MoPa joint project in the framework of the Special Programme GEOTECHNOLOGIEN. Further funding occurred via CLEAN, which is part of the geoscientific research and development programme GEOTECHNOLOGIEN and is funded by the German Federal Ministry for Education and Research (BMBF).

Integrating surface and borehole geophysics in ground water studies - an example using electromagnetic soundings in south Florida

USGS Publications Warehouse

Paillet, Frederick; Hite, Laura; Carlson, Matthew

1999-01-01

Time domain surface electromagnetic soundings, borehole induction logs, and other borehole logging techniques are used to construct a realistic model for the shallow subsurface hydraulic properties of unconsolidated sediments in south Florida. Induction logs are used to calibrate surface induction soundings in units of pore water salinity by correlating water sample specific electrical conductivity with the electrical conductivity of the formation over the sampled interval for a two‐layered aquifer model. Geophysical logs are also used to show that a constant conductivity layer model is appropriate for the south Florida study. Several physically independent log measurements are used to quantify the dependence of formation electrical conductivity on such parameters as salinity, permeability, and clay mineral fraction. The combined interpretation of electromagnetic soundings and induction logs was verified by logging three validation boreholes, confirming quantitative estimates of formation conductivity and thickness in the upper model layer, and qualitative estimates of conductivity in the lower model layer.

History of Presolar Grains

NASA Technical Reports Server (NTRS)

Bernatowicz, Thomas J.

2005-01-01

Papers on the History of Presolar Grains. This has been a very productive period in which much of the laboratory work conducted in the previous year and during this funding cycle were brought to completion. In the last year we have published or submitted for peer review 4 research papers, 4 review papers, and 11 abstracts in research areas supported under this grant. Brief synopses of the results of the research papers are presented, followed by short summaries of the topics discussed in the review papers. Several areas of research are of course being actively pursued, and the appended list of abstracts gives citations to this ongoing work. In a paper submitted to the Astrophysical Journal, the results of an investigation into the physical conditions in the mass outflows of asymptotic giant branch (AGB) carbon stars that are required for the formation of micron-sized presolar graphite grains, with and without previously formed internal crystals of titanium carbide (TIC) are reported.

Research of medical gases in Poland

PubMed Central

2013-01-01

Research of medical gases is well established in Poland and has been marked with the foundation of several professional societies. Numerous academic centers including those dealing with hyperbaric and diving medicine conduct studies of medical gases, in vast majority supported with intramural funds. In general, Polish research of medical gases is very much clinical in nature, covering new applications and safety of medical gases in medicine; on the other hand there are several academic centers pursuing preclinical studies, and elaborating basic theories of gas physiology and mathematical modeling of gas exchange. What dominates is research dealing with oxygen and ozone as well as studies of anesthetic gases and their applications. Finally, several research directions involving noble gas, hydrogen and hydrogen sulfide for cell protection, only begin to gain recognition of basic scientists and clinicians. However, further developments require more monetary spending on research and clinical testing as well as formation of new collective bodies for coordinating efforts in this matter. PMID:23916016

Using Formative Research to Develop Environmental and Ecological Interventions to Address Overweight and Obesity

PubMed Central

Wilson, Mark G.; Goetzel, Ron Z.; Ozminkowski, Ronald J.; DeJoy, Dave M.; Della, Lindsay; Roemer, Enid Chung; Schneider, Jennifer; Tully, Karen J.; White, John M.; Baase, Catherine M.

2010-01-01

Objective This paper presents the formative research phase of a large multi-site intervention study conducted to inform the feasibility of introducing environmental and ecological interventions. Methods Using mixed methods that included an environmental assessment, climate survey, leadership focus groups and interviews, and archival data, information was collected on employee health and job factors, the physical environment, social-organizational environment, and current health programs. Results Results show that 83% of employees at the study sites were overweight or obese. Leadership was very supportive of health initiatives and felt integrating the strategies into organizational operations would increase their likelihood of success. Environmental assessment scores ranged from 47 to 19 on a 100 point scale. Health services personnel tended to view the organizational climate for health more positively than site leadership (mean of 3.6 vs 3.0 respectively). Conclusions Intervention strategies chosen included increasing healthy food choices in vending, cafeterias, and company meetings, providing a walking path, targeting messages, developing site goals, training leaders, and establishing leaders at the work group level. PMID:18073340

Press releases: translating research into news.

PubMed

Woloshin, Steven; Schwartz, Lisa M

2002-06-05

While medical journals strive to ensure accuracy and the acknowledgment of limitations in articles, press releases may not reflect these efforts. Telephone interviews conducted in January 2001 with press officers at 9 prominent medical journals and analysis of press releases (n = 127) about research articles for the 6 issues of each journal preceding the interviews. Seven of the 9 journals routinely issue releases; in each case, the editor with the press office selects articles based on perceived newsworthiness and releases are written by press officers trained in communications. Journals have general guidelines (eg, length) but no standards for acknowledging limitations or for data presentation. Editorial input varies from none to intense. Of the 127 releases analyzed, 29 (23%) noted study limitations and 83 (65%) reported main effects using numbers; 58 reported differences between study groups and of these, 26 (55%) provided the corresponding base rate, the format least prone to exaggeration. Industry funding was noted in only 22% of 23 studies receiving such funding. Press releases do not routinely highlight study limitations or the role of industry funding. Data are often presented using formats that may exaggerate the perceived importance of findings.

Porous mixed metal oxides: design, formation mechanism, and application in lithium-ion batteries

NASA Astrophysics Data System (ADS)

Wu, Fangfang; Bai, Jing; Feng, Jinkui; Xiong, Shenglin

2015-10-01

The relentless pursuit of new electrode materials for lithium ion batteries (LIBs) has been conducted for decades. Structures with either porous or nanostructure configurations have been confirmed as advantageous candidates for energy storage/conversion applications. The integration of the two features into one structure can provide another chance to improve the electroactivities. Recently, single-phased mixed metal oxides (MMOs) containing different metal cations, in particular, have confirmed high electrochemical activities because of their complex chemical composition, interfacial effects, and the synergic effects of the multiple metal species. In this review, we will focus on recent research advances of MMOs with porous architectures as anode materials in the matter of structural arrangement and compositional manipulation. Moreover, the application of self-supported MMO-based porous structures as LIB anodes is also explained herein. More importantly, investigations on the synthetic system and formation mechanism of porous MMOs will be highlighted. Some future trends for the innovative design of new electrode materials are also discussed in this review. The challenges and prospects will draw many researchers' attention.

A Density Functional Theory Study of Codoping Characteristics of Sulfur with Alkaline Earth in Delafossite CuAlO2

NASA Astrophysics Data System (ADS)

Liu, Qi-Jun; Qin, Han; Liu, Zheng-Tang

2016-04-01

The structural, electronic properties and formation energies of sulfur and alkaline earth codoped delafossite CuAlO2 have been investigated using the first-principles density functional theory calculations. Our results reveal that the volume of codoping systems increases with the increasing atomic radius of metal atoms. The formation energies under different growth conditions have been calculated, showing that the codoping systems are formed easily under O-rich growth conditions. Electronic band structures and density of states have been obtained. The decreased bandgaps, enhanced covalence and appearance of electron acceptors after codoping are all good for p-type conductivity. Supported by the National Natural Science Foundation of China under Grant Nos. 11347199, 51402244, and 11547311, the Specialized Research Fund for Doctoral Program of Higher Education of China under Grant No. 20130184120028, the Fundamental Research Fund for the Central Universities, China under Grant Nos. 2682014CX084, 2682014ZT30, and 2682014ZT31, and the fund of the State Key Laboratory of Solidification Processing in NWPU under Grant No. SKLSP201511

Randomized trial of risk information formats in direct-to-consumer prescription drug advertisements.

PubMed

Aikin, Kathryn J; O'Donoghue, Amie C; Swasy, John L; Sullivan, Helen W

2011-01-01

Federal regulations specify that print advertisements for prescription drugs and biological products must provide a true statement of information "in brief summary" about each advertised product's "side effects, contraindications, and effectiveness." Some of the current approaches to fulfilling the brief summary requirement, although adequate from a regulatory perspective, result in ads that may be difficult to read and understand when used in consumer-directed promotion. . To explore ways in which the brief summary might be improved. . The authors conducted an experimental study that examined 300 consumers' (mall visitors ever told that they were overweight) understanding of and preference for 4 different brief summary formats: traditional (a plain-language version of the risk sections from professional labeling), question and answer (Q&A; with headings framed in the form of questions), highlights (a summary section from revised professional labeling), and prescription drug facts box (similar to the current over-the-counter drug facts label). . The format had several effects. For instance, participants who viewed the drug facts format were better able to recall risks (P < .01) and reported greater confidence to perform the tasks (P < .01) than those who saw the traditional format. Differences in preference were noted; for example, the drug facts format was ranked highest, followed by the Q&A format, the traditional format, and finally the highlights format, P < 0.001. . Taken together, these data suggest that the traditional method of conveying information in the brief summary is neither the most comprehensible nor the most preferred by consumers. These data provide policy makers and researchers with important information regarding the role of format in consumers' understanding of the brief summary.

The assessment of a structured online formative assessment program: a randomised controlled trial

PubMed Central

2014-01-01

Background Online formative assessment continues to be an important area of research and methods which actively engage the learner and provide useful learning outcomes are of particular interest. This study reports on the outcomes of a two year study of medical students using formative assessment tools. Method The study was conducted over two consecutive years using two different strategies for engaging students. The Year 1 strategy involved voluntary use of the formative assessment tool by 129 students. In Year 2, a second cohort of 130 students was encouraged to complete the formative assessment by incorporating summative assessment elements into it. Outcomes from pre and post testing students around the formative assessment intervention were used as measures of learning. To compare improvement scores between the two years a two-way Analysis of Variance (ANOVA) model was fitted to the data. Results The ANOVA model showed that there was a significant difference in improvement scores between students in the two years (mean improvement percentage 19% vs. 38.5%, p < 0.0001). Students were more likely to complete formative assessment items if they had a summative component. In Year 2, the time spent using the formative assessment tool had no impact on student improvement, nor did the number of assessment items completed. Conclusion The online medium is a valuable learning resource, capable of providing timely formative feedback and stimulating student-centered learning. However the production of quality content is a time-consuming task and careful consideration must be given to the strategies employed to ensure its efficacy. Course designers should consider the potential positive impact summative components to formative assessment may have on student engagement and outcomes. PMID:24400883

In situ recording of particle network formation in liquids by ion conductivity measurements.

PubMed

Pfaffenhuber, Christian; Sörgel, Seniz; Weichert, Katja; Bele, Marjan; Mundinger, Tabea; Göbel, Marcus; Maier, Joachim

2011-09-21

The formation of fractal silica networks from a colloidal initial state was followed in situ by ion conductivity measurements. The underlying effect is a high interfacial lithium ion conductivity arising when silica particles are brought into contact with Li salt-containing liquid electrolytes. The experimental results were modeled using Monte Carlo simulations and tested using confocal fluorescence laser microscopy and ζ-potential measurements.

Acoustic and Electrical Property Changes Due to Microbial Growth and Biofilm Formation in Porous Media

EPA Science Inventory

A laboratory study was conducted to investigate the effect of microbial growth and biofilm formation on compressional waves, and complex conductivity during stimulated microbial growth. Over the 29 day duration of the experiment, compressional wave amplitudes and arrival times f...

A pragmatic method for transforming clinical research data from the research electronic data capture "REDCap" to Clinical Data Interchange Standards Consortium (CDISC) Study Data Tabulation Model (SDTM): Development and evaluation of REDCap2SDTM.

PubMed

Yamamoto, Keiichi; Ota, Keiko; Akiya, Ippei; Shintani, Ayumi

2017-06-01

The Clinical Data Interchange Standards Consortium (CDISC) Study Data Tabulation Model (SDTM) can be used for new drug application studies as well as secondarily for creating a clinical research data warehouse to leverage clinical research study data across studies conducted within the same disease area. However, currently not all clinical research uses Clinical Data Acquisition Standards Harmonization (CDASH) beginning in the set-up phase of the study. Once already initiated, clinical studies that have not utilized CDASH are difficult to map in the SDTM format. In addition, most electronic data capture (EDC) systems are not equipped to export data in SDTM format; therefore, in many cases, statistical software is used to generate SDTM datasets from accumulated clinical data. In order to facilitate efficient secondary use of accumulated clinical research data using SDTM, it is necessary to develop a new tool to enable mapping of information for SDTM, even during or after the clinical research. REDCap is an EDC system developed by Vanderbilt University and is used globally by over 2100 institutions across 108 countries. In this study, we developed a simulated clinical trial to evaluate a tool called REDCap2SDTM that maps information in the Field Annotation of REDCap to SDTM and executes data conversion, including when data must be pivoted to accommodate the SDTM format, dynamically, by parsing the mapping information using R. We confirmed that generating SDTM data and the define.xml file from REDCap using REDCap2SDTM was possible. Conventionally, generation of SDTM data and the define.xml file from EDC systems requires the creation of individual programs for each clinical study. However, our proposed method can be used to generate this data and file dynamically without programming because it only involves entering the mapping information into the Field Annotation, and additional data into specific files. Our proposed method is adaptable not only to new drug application studies but also to all types of research, including observational and public health studies. Our method is also adaptable to clinical data collected with CDASH at the beginning of a study in non-standard format. We believe that this tool will reduce the workload of new drug application studies and will support data sharing and reuse of clinical research data in academia. Copyright © 2017 Elsevier Inc. All rights reserved.

The role of the VZn-NO-H complex in the p-type conductivity in ZnO.

PubMed

Amini, M N; Saniz, R; Lamoen, D; Partoens, B

2015-02-21

Past research efforts aiming at obtaining stable p-type ZnO have been based on complexes involving nitrogen doping. A recent experiment by (J. G. Reynolds et al., Appl. Phys. Lett., 2013, 102, 152114) demonstrated a significant (∼10(18) cm(-3)) p-type behavior in N-doped ZnO films after appropriate annealing. The p-type conductivity was attributed to a VZn-NO-H shallow acceptor complex, formed by a Zn vacancy (VZn), N substituting O (NO), and H interstitial (Hi). We present here a first-principles hybrid functional study of this complex compared to the one without hydrogen. Our results confirm that the VZn-NO-H complex acts as an acceptor in ZnO. We find that H plays an important role, because it lowers the formation energy of the complex with respect to VZn-NO, a complex known to exhibit (unstable) p-type behavior. However, this additional H atom also occupies the hole level at the origin of the shallow behavior of VZn-NO, leaving only two states empty higher in the band gap and making the VZn-NO-H complex a deep acceptor. Therefore, we conclude that the cause of the observed p-type conductivity in experiment is not the presence of the VZn-NO-H complex, but probably the formation of the VZn-NO complex during the annealing process.

76 FR 14034 - Proposed Collection; Comment Request; A Generic Submission for Formative Research, Pretesting...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-15

... Request; A Generic Submission for Formative Research, Pretesting, Stakeholder Measures and Advocate Forms... Collection: Title: A Generic Submission for Formative Research, Pre-testing, Stakeholder Measures and.... This customer satisfaction research helps ensure the relevance, utility, and appropriateness of the...

Dissolved oxygen as a key parameter to aerobic granule formation.

PubMed

Sturm, B S McSwain; Irvine, R L

2008-01-01

Much research has asserted that high shear forces are necessary for the formation of aerobic granular sludge in Sequencing Batch Reactors (SBRs). In order to distinguish the role of shear and dissolved oxygen on granule formation, two separate experiments were conducted with three bench-scale SBRs. In the first experiment, an SBR was operated with five sequentially decreasing superficial upflow gas velocities ranging from 1.2 to 0.4 cm s(-1). When less than 1 cm s(-1) shear was applied to the reactor, aerobic granules disintegrated into flocs, with corresponding increases in SVI and effluent suspended solids. However, the dissolved oxygen also decreased from 8 mg L(-1) to 5 mg L(-1), affecting the Feast/Famine regime in the SBR and the substrate removal kinetics. A second experiment operated two SBRs with an identical shear force of 1.2 cm s(-1), but two dissolved oxygen concentrations. Even when supplied a high shear force, aerobic granules could not form at a dissolved oxygen less than 5 mg L(-1), with a Static Fill. These results indicate that the substrate removal kinetics and dissolved oxygen are more significant to granule formation than shear force. Copyright IWA Publishing 2008.

A head up display format for application to V/STOL aircraft approach and landing

NASA Technical Reports Server (NTRS)

Merrick, Vernon K.; Farris, Glenn G.; Vanags, Andrejs A.

1990-01-01

A head up display (HUD) format developed at NASA Ames Research Center to provide pilots of V/STOL aircraft with complete flight guidance and control information for category-3C terminal-area flight operations, is described in detail. These flight operations cover a large spectrum, from STOL operations on land-based runways to VTOL operations on small ships in high seas. Included in this description is a complete geometrical specification of the HUD elements and their drive laws. The principal features of this display format are the integration of the flightpath and pursuit guidance information into a narrow field of view, easily assimilated by the pilot with a single glance, and the superposition of vertical and horizontal situation information. The display is a derivative of a successful design developed for conventional transport aircraft. The design is the outcome of many piloted simulations conducted over a four-year period. Whereas the concepts on which the display format rests could not be fully exploited because of field-of-view restrictions, and some reservations remain about the acceptability of superimposing vertical and horizontal situation information, the design successfully fulfilled its intended objectives.

AMIGAS: Building a Cervical Cancer Screening Intervention for Public Health Practice

PubMed Central

Smith, Judith Lee; Wilson, Katherine M.; Orians, Carlyn E.; Byrd, Theresa L.

2015-01-01

Background Many barriers to cervical cancer screening for Hispanic women have been documented, but few effective interventions exist. The Community Preventive Services Task Force recommends increasing cervical cancer screening through various methods. Building on this evidence, the Centers for Disease Control and Prevention funded the research and testing phases for an evidence-based and theoretically grounded intervention designed to increase cervical cancer screening among never and rarely screened Hispanic women of Mexican descent. In this article, we describe the development process of the AMIGAS (Ayudando a las Mujeres con Información, Guía, y Amor para su Salud) intervention, highlight the integration of scientific evidence and community-based participatory research principles, and identify opportunities for dissemination, adaptation, and implementation of this intervention. Methods The AMIGAS team was a collaboration among researchers, promotoras (community health workers), and program administrators. The multiyear, multiphase project was conducted in Houston, Texas; El Paso, Texas; and Yakima, Washington. The team completed several rounds of formative research, designed intervention materials and methodology, conducted a randomized controlled trial, created a guide for program administrators, and developed an intervention dissemination plan. Results Trial results demonstrated that AMIGAS was successful in increasing cervical cancer screening among Hispanic women. Adaptation of AMIGAS showed minimal reduction of outcomes. Dissemination efforts are underway to make AMIGAS available in a downloadable format via the Internet. Conclusions Developing a community-based intervention that is evidence-based and theoretically grounded is challenging, time-intensive, and requires collaboration among multiple disciplines. Inclusion of key stakeholders—in particular program deliverers and administrators—and planning for dissemination and translation to practice are integral components of successful intervention design. By providing explicit directions for adaptation for program deliverers, relevant information for program administrators, and access to the intervention via the Internet, AMIGAS is available to help increase cervical cancer screening among Hispanic women and other women disproportionately affected by cervical cancer. PMID:23930983

The contribution of lubricant to the formation of particulate matter with reactivity controlled compression ignition in light-duty diesel engines

DOE PAGES

Storey, John Morse; Curran, Scott; Dempsey, Adam B.; ...

2014-12-25

Reactivity controlled compression ignition (RCCI) has been shown in single- and multi-cylinder engine research to achieve high thermal efficiencies with ultra-low NO X and soot emissions. The nature of the particulate matter (PM) produced by RCCI operation has been shown in recent research to be different than that of conventional diesel combustion and even diesel low-temperature combustion. Previous research has shown that the PM from RCCI operation contains a large amount of organic material that is volatile and semi-volatile. However, it is unclear if the organic compounds are stemming from fuel or lubricant oil. The PM emissions from dual-fuel RCCImore » were investigated in this study using two engine platforms, with an emphasis on the potential contribution of lubricant. Both engine platforms used the same base General Motors (GM) 1.9-L diesel engine geometry. The first study was conducted on a single-cylinder research engine with primary reference fuels (PRFs), n-heptane, and iso-octane. The second study was conducted on a four-cylinder GM 1.9-L ZDTH engine which was modified with a port fuel injection (PFI) system while maintaining the stock direct injection fuel system. Multi-cylinder RCCI experiments were run with PFI gasoline and direct injection of 2-ethylhexyl nitrate (EHN) mixed with gasoline at 5 % EHN by volume. In addition, comparison cases of conventional diesel combustion (CDC) were performed. Particulate size distributions were measured, and PM filter samples were collected for analysis of lube oil components. Triplicate PM filter samples (i.e., three individual filter samples) for both gas chromatography-mass spectroscopy (GC-MS; organic) analysis and X-ray fluorescence (XRF; metals) were obtained at each operating point and queued for analysis of both organic species and lubricant metals. Here, the results give a clear indication that lubricants do not contribute significantly to the formation of RCCI PM.« less

Forging a new legacy of trust in research with Alaska Native college students using CBPR.

PubMed

Lopez, Ellen D S; Sharma, Dinghy Kristine B; Mekiana, Deborah; Ctibor, Alaina

2012-01-01

Disparities in the rates of matriculation and graduation are of concern to Alaska Native (AN) students and the universities committed to their academic success. Efforts to reduce attrition require a keen understanding of the factors that impact quality of life (QOL) at college. Yet, a long-standing legacy of mistrust towards research poses challenges to conducting inquiry among AN students. We introduced a partnership between the University of Alaska Fairbank's Rural Student Services (RSS) and the Center for Alaska Native Health Research (CANHR) within which we conducted the "What makes life good?" study aimed towards developing a QOL measure for AN students. Equally important was building a legacy of research trust among AN partners. We describe Phase I of a 2-phase study that employed a sequential mixed methods approach. Discussed are facilitators, challenges and lessons learned while striving to adhere to the principles of community-based participatory research (CBPR). Phase I included formative focus groups and QOL measurement development. The research involved the interplay among activities that were co-developed with the goal of enhancing trust and research capacity. Emphasis was placed on ensuring that data collection and analyses were student driven. All partners resided at the same university. However, trust and collaboration could not be assumed. Working within a collaborative framework, our partnership achieved the aim of developing a culturally informed QOL measure, while also creating an empowering experience for all partners who became co-investigators in a process that might normally be regarded with mistrust.

Association between framing of the research question using the PICOT format and reporting quality of randomized controlled trials

PubMed Central

2010-01-01

Background Experts recommend formulating a structured research question to guide the research design. However, the basis for this recommendation has not been formally evaluated. The aim of this study was to examine if a structured research question using the PICOT (Population, Intervention, Comparator, Outcome, Time-frame) format is associated with a better reporting quality of randomized controlled trials (RCTs). Methods We evaluated 89 RCTs reports published in three endocrinology journals in 2005 and 2006, the quality of reporting of which was assessed in a previous study. We examined whether the reports stated each of the five elements of a structured research question: population, intervention, comparator, outcome and time-frame. A PICOT score was created with a possible score between 0 and 5. Outcomes were: 1) a 14-point overall reporting quality score (OQS) based on the Consolidated Standards for Reporting Trials; and 2) a 3-point key score (KS), based on allocation concealment, blinding and use of intention-to-treat analysis. We conducted multivariable regression analyses using generalized estimating equations to determine if a higher PICOT score or the use of a structured research question were independently associated with a better reporting quality. Journal of publication, funding source and sample size were identified as factors associated with OQS in our previous report on this dataset, and therefore included in the model. Results A higher PICOT score was independently associated with OQS (incidence rate ratio (IRR) = 1.021, 95% CI: 1.012 to 1.029) and KS (IRR = 1.142, 95% CI: 1.079 to 1.210). A structured research question was present in 33.7% of the reports and it was associated with a better OQS (IRR = 1.095, 95% CI 1.059-1.132) and KS (IRR = 1.530, 95% CI 1.311-1.786). Conclusions Better framing of the research question using the PICOT format is independently associated with better overall reporting quality - although the effect is small - and better reporting of key methodologies. PMID:20137069

Translation and adaptation of smoking relapse-prevention materials for pregnant and postpartum Hispanic women.

PubMed

Simmons, Vani Nath; Cruz, Ligia M; Brandon, Thomas H; Quinn, Gwendolyn P

2011-01-01

Quitting smoking is one of the most important behavior changes a pregnant woman can make, with health benefits extending beyond pregnancy for the woman and her child. Increasing numbers of pregnant women are quitting smoking; however, the majority resume smoking later in their pregnancy or shortly after giving birth. Previous research has demonstrated the efficacy of self-help smoking relapse-prevention booklets; however, there is a dearth of materials available in Spanish for Hispanic smokers. The goal of the present study was to translate and adapt existing, theoretically based, smoking relapse-prevention materials for pregnant and postpartum Hispanic women. This article describes the transcreation approach used to ensure the Forever Free for Baby and Me booklets were linguistically and culturally relevant for the heterogeneous populations of Hispanic women. The authors conducted multistage formative research to adapt the booklets and modify vignettes and graphics. Compared with previous research conducted with pregnant non-Hispanic women, results revealed the following: (a) a lack of association or concern about smoking and weight gain, (b) the importance of family approval of behavior, and (c) stress related to difficulties surrounding the immigration experience. The authors' qualitative findings confirm and extend past research that has suggested ways to enhance the cultural relevance and acceptability of a health intervention.

Consumer attitudes towards the establishment of a national Australian familial cancer research database by the Inherited Cancer Connect (ICCon) Partnership.

PubMed

Forrest, Laura; Mitchell, Gillian; Thrupp, Letitia; Petelin, Lara; Richardson, Kate; Mascarenhas, Lyon; Young, Mary-Anne

2018-01-01

Clinical genetics units hold large amounts of information which could be utilised to benefit patients and their families. In Australia, a national research database, the Inherited Cancer Connect (ICCon) database, is being established that comprises clinical genetic data held for all carriers of mutations in cancer predisposition genes. Consumer input was sought to establish the acceptability of the inclusion of clinical genetic data into a research database. A qualitative approach using a modified nominal group technique was used to collect data through consumer forums conducted in three Australian states. Individuals who had previously received care from Familial Cancer Centres were invited to participate. Twenty-four consumers participated in three forums. Participants expressed positive attitudes about the establishment of the ICCon database, which were informed by the perceived benefits of the database including improved health outcomes for individuals with inherited cancer syndromes. Most participants were comfortable to waive consent for their clinical information to be included in the research database in a de-identified format. As major stakeholders, consumers have an integral role in contributing to the development and conduct of the ICCon database. As an initial step in the development of the ICCon database, the forums demonstrated consumers' acceptance of important aspects of the database including waiver of consent.

75 FR 25269 - Proposed Collection; Comment Request; A Generic Submission for Formative Research, Pretesting...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-07

... Request; A Generic Submission for Formative Research, Pretesting, and Stakeholder Measures at NCI SUMMARY... Generic Submission for Formative Research, Pre-testing, and Stakeholder Measures at NCI. Type of... external stakeholders with this collaboration. This customer satisfaction research helps ensure the...

Formation and electrical transport properties of pentacene nanorod crystal.

PubMed

Akai-Kasaya, M; Ohmori, C; Kawanishi, T; Nashiki, M; Saito, A; Aono, M; Kuwahara, Y

2010-09-10

The monophasic formation of an uncharted pentacene crystal, the pentacene nanorod, has been investigated. The restricted formation of the pentacene nanorod on a bare mica surface reveals a peculiar surface catalytic crystal growth mode of the pentacene. We demonstrated the charge transport measurements through a single pentacene nanorod and analyzed the data using a periodic hopping conduction model. The results revealed that the pentacene nanorod has a periodic conductive node within their one-dimensional crystal.

Formative Assessment and Writing: A Meta-Analysis

ERIC Educational Resources Information Center

Graham, Steve; Hebert, Michael; Harris, Karen R.

2015-01-01

To determine whether formative writing assessments that are directly tied to everyday classroom teaching and learning enhance students' writing performance, we conducted a meta-analysis of true and quasi-experiments conducted with students in grades 1 to 8. We found that feedback to students about writing from adults, peers, self, and computers…

Reduction of thermal conductivity in phononic nanomesh structures.

PubMed

Yu, Jen-Kan; Mitrovic, Slobodan; Tham, Douglas; Varghese, Joseph; Heath, James R

2010-10-01

Controlling the thermal conductivity of a material independently of its electrical conductivity continues to be a goal for researchers working on thermoelectric materials for use in energy applications and in the cooling of integrated circuits. In principle, the thermal conductivity κ and the electrical conductivity σ may be independently optimized in semiconducting nanostructures because different length scales are associated with phonons (which carry heat) and electric charges (which carry current). Phonons are scattered at surfaces and interfaces, so κ generally decreases as the surface-to-volume ratio increases. In contrast, σ is less sensitive to a decrease in nanostructure size, although at sufficiently small sizes it will degrade through the scattering of charge carriers at interfaces. Here, we demonstrate an approach to independently controlling κ based on altering the phonon band structure of a semiconductor thin film through the formation of a phononic nanomesh film. These films are patterned with periodic spacings that are comparable to, or shorter than, the phonon mean free path. The nanomesh structure exhibits a substantially lower thermal conductivity than an equivalently prepared array of silicon nanowires, even though this array has a significantly higher surface-to-volume ratio. Bulk-like electrical conductivity is preserved. We suggest that this development is a step towards a coherent mechanism for lowering thermal conductivity.

Formative Research in School and Community-Based Health Programs and Studies: "State of the Art" and the TAAG Approach

ERIC Educational Resources Information Center

Gittelsohn, Joel; Steckler, Allan; Johnson, Carolyn C.; Pratt, Charlotte; Grieser, Mira; Pickrel, Julie; Stone, Elaine J.; Conway, Terry; Coombs, Derek; Staten, Lisa K.

2006-01-01

Formative research uses qualitative and quantitative methods to provide information for researchers to plan intervention programs. Gaps in the formative research literature include how to define goals, implementation plans, and research questions; select methods; analyze data; and develop interventions. The National Heart, Lung, and Blood…

Reexamining competitive priorities: Empirical study in service sector

NASA Astrophysics Data System (ADS)

Idris, Fazli; Mohammad, Jihad

2015-02-01

The general objective of this study is to validate the multi-level concept of competitive priorities using reflective-formative model at a higher order for service industries. An empirical study of 228 firms from 9 different service industries is conducted to answer the objective of this study. Partial least square analysis with SmartPLS 2.0 was used to perform the analysis. Finding revealed six priorities: cost, flexibility, delivery, quality talent management, quality tangibility, and innovativeness. It emerges that quality are expanded into two types; one is related to managing talent for process improvement and the second one is the physical appearance and tangibility of the service quality. This study has confirmed competitive priorities as formative second-order hierarchical latent construct by using rigorous empirical evidence. Implications, limitation and suggestion for future research are accordingly discussed in this paper.

The investigation of Ce doped ZnO crystal: The electronic, optical and magnetic properties

NASA Astrophysics Data System (ADS)

Wen, Jun-Qing; Zhang, Jian-Min; Qiu, Ze-Gang; Yang, Xu; Li, Zhi-Qin

2018-04-01

The electronic, optical and magnetic properties of Ce doped ZnO crystal have been studied by using first principles method. The research of formation energies show that Ce doped ZnO is energetically stable, and the formation energies reduce from 6.25% to 12.5% for Ce molar percentage. The energy band is still direct band gap after Ce doped, and band gap increases with the increase of Cesbnd Ce distance. The Fermi level moves upward into conduction band and the DOS moves to lower energy with the increase of Ce concentration, which showing the properties of n-type semiconductor. The calculated optical properties imply that Ce doped causes a red-shift of absorption peaks, and enhances the absorption of the visible light. The transition from ferromagnetic to antiferromagnetic has been found in Ce doped ZnO.

Framing life and death on YouTube: the strategic communication of organ donation messages by organ procurement organizations.

PubMed

VanderKnyff, Jeremy; Friedman, Daniela B; Tanner, Andrea

2015-01-01

Using a sample of YouTube videos posted on the YouTube channels of organ procurement organizations, a content analysis was conducted to identify the frames used to strategically communicate prodonation messages. A total of 377 videos were coded for general characteristics, format, speaker characteristics, organs discussed, structure, problem definition, and treatment. Principal components analysis identified message frames, and k-means cluster analysis established distinct groupings of videos on the basis of the strength of their relationship to message frames. Analysis of these frames and clusters found that organ procurement organizations present multiple, and sometimes competing, video types and message frames on YouTube. This study serves as important formative research that will inform future studies to measure the effectiveness of the distinct message frames and clusters identified.

Group Formation in Economics

NASA Astrophysics Data System (ADS)

Demange, Gabrielle; Wooders, Myrna

2005-01-01

Broad and diverse ranges of activities are conducted within and by organized groups of individuals, including political, economic and social activities. These activities have recently become a subject of intense interest in economics and game theory. Some of the topics investigated in this collection are models of networks of power and privilege, trade networks, co-authorship networks, buyer-seller networks with differentiated products, and networks of medical innovation and the adaptation of new information. Other topics are social norms on punctuality, clubs and the provision of club goods and public goods, research and development and collusive alliances among corporations, and international alliances and trading agreements. While relatively recent, the literature on game theoretic studies of group formation in economics is already vast. This volume provides an introduction to this important literature on game-theoretic treatments of situations with networks, clubs, and coalitions, including some applications.

Methodology of investigation of ultra high temperature ceramics thermochemical stability and catalycity

NASA Astrophysics Data System (ADS)

Vaganov, A. V.; Zhestkov, B. E.; Lyamin, Yu. B.; Poilov, V. Z.; Pryamilova, E. N.

2016-10-01

The 12 ceramics samples of Ural Research Institute of Composite Materials were investigated in the wind tunnel VAT-104 of TsAGI in air plasma flow which simulated the hypervelocity flight. Model used were discs and blunted cones. All samples had withstood the tests without decomposition, the sample temperature and test time being respectively up to 2800 K and 1200 seconds. It was found there is a big delay in heating of the samples, thought they are of great thermo conductivity. A very interesting phenomenon, the formation of highly catalytic thermo barrier film on the front surface of sample, was also observed. It was a formation of this film that coursed a jump of 500-1000 K of surface temperature during the test. The sample catalytic activity was evaluated using modernized methodology based upon parametrical numerical simulation.

The Influence of Parameters on the Generatrix of the Helicoid Form Guide of Geokhod Bar Working Body

NASA Astrophysics Data System (ADS)

Aksenov, Vladimir; Sadovets, Vladimir; Pashkov, Dmitriy

2017-11-01

Influence of geometrical parameters of generatrix of helicoid on a guide of geokhod bar working body is proved in article. The relevance of the conducted research is considered and proved. General characteristics of the geokhod are presented. Features of geokhod working body, in particular formation of irregular shape of a surface of a face and working body are formulated and also it is told that at screw movement of geokhod working body of a face, points of working body will be formed a helicoid (screw) surface of a face. For establishing of die goals and objectives of research general geometrical parameters of generatrix is marked and justified which treat length of generatrix, width of generatrix of helicoid. pitch of hehcoid and it's form. Forms of guides of geokhod bar working body based on basis parameters of geokhod and accepted general geometrical parameters of geokhod working body are received and presented. In virtue of the conducted research the dependence of a form of a guide of bar on general geometrical parameters of helicoid is defined and also basis parameters of hehcoid in influencing a form of guide of working body.

The MUSOS (MUsic SOftware System) Toolkit: A computer-based, open source application for testing memory for melodies.

PubMed

Rainsford, M; Palmer, M A; Paine, G

2018-04-01

Despite numerous innovative studies, rates of replication in the field of music psychology are extremely low (Frieler et al., 2013). Two key methodological challenges affecting researchers wishing to administer and reproduce studies in music cognition are the difficulty of measuring musical responses, particularly when conducting free-recall studies, and access to a reliable set of novel stimuli unrestricted by copyright or licensing issues. In this article, we propose a solution for these challenges in computer-based administration. We present a computer-based application for testing memory for melodies. Created using the software Max/MSP (Cycling '74, 2014a), the MUSOS (Music Software System) Toolkit uses a simple modular framework configurable for testing common paradigms such as recall, old-new recognition, and stem completion. The program is accompanied by a stimulus set of 156 novel, copyright-free melodies, in audio and Max/MSP file formats. Two pilot tests were conducted to establish the properties of the accompanying stimulus set that are relevant to music cognition and general memory research. By using this software, a researcher without specialist musical training may administer and accurately measure responses from common paradigms used in the study of memory for music.

Detonation Synthesis of Alpha-Variant Silicon Carbide

NASA Astrophysics Data System (ADS)

Langenderfer, Martin; Johnson, Catherine; Fahrenholtz, William; Mochalin, Vadym

2017-06-01

A recent research study has been undertaken to develop facilities for conducting detonation synthesis of nanomaterials. This process involves a familiar technique that has been utilized for the industrial synthesis of nanodiamonds. Developments through this study have allowed for experimentation with the concept of modifying explosive compositions to induce synthesis of new nanomaterials. Initial experimentation has been conducted with the end goal being synthesis of alpha variant silicon carbide (α-SiC) in the nano-scale. The α-SiC that can be produced through detonation synthesis methods is critical to the ceramics industry because of a number of unique properties of the material. Conventional synthesis of α-SiC results in formation of crystals greater than 100 nm in diameter, outside nano-scale. It has been theorized that the high temperature and pressure of an explosive detonation can be used for the formation of α-SiC in the sub 100 nm range. This paper will discuss in detail the process development for detonation nanomaterial synthesis facilities, optimization of explosive charge parameters to maximize nanomaterial yield, and introduction of silicon to the detonation reaction environment to achieve first synthesis of nano-sized alpha variant silicon carbide.

Microgravity combustion science: Progress, plans, and opportunities

NASA Technical Reports Server (NTRS)

1992-01-01

An earlier overview is updated which introduced the promise of microgravity combustion research and provided a brief survey of results and then current research participants, the available set of reduced gravity facilities, and plans for experimental capabilities in the space station era. Since that time, several research studies have been completed in drop towers and aircraft, and the first space based combustion experiments since Skylab have been conducted on the Shuttle. The microgravity environment enables a new range of experiments to be performed since buoyancy induced flows are nearly eliminated, normally obscured forces and flows may be isolated, gravitational settling or sedimentation is nearly eliminated, and larger time or length scales in experiments are feasible. In addition to new examinations of classical problems, (e.g., droplet burning), current areas of interest include soot formation and weak turbulence, as influenced by gravity.

Using the World Wide Web in health-related intervention research. A review of controlled trials.

PubMed

Kirsch, Sallie E; Lewis, Frances M

2004-01-01

A review of published controlled trials was conducted to evaluate components, utility, and efficacy of Web-based healthcare interventions. Nine studies met the established review criteria. Knowledge gains were the most commonly reported significant changes; rarely were there measures or significant changes on behavioral outcomes. Studies varied in format of personal contact with participants, in the structure or sequence of intervention content, and in design features. Dosage was inconsistently measured and process evaluation was relatively absent. Despite limitations, several studies reported significant effects. Based on best evidence-to-date, elements of technologically mediated interventions important to future research are summarized. Taken together, research suggests that Web-based interventions may be an efficacious delivery system, especially for those with chronic conditions amenable to self-management and to those with various limitations to accessing healthcare.

Possible Mechanisms for Turbofan Engine Ice Crystal Icing at High Altitude

NASA Technical Reports Server (NTRS)

Tsao, Jen-Ching; Struk, Peter M.; Oliver, Michael

2014-01-01

A thermodynamic model is presented to describe possible mechanisms of ice formation on unheated surfaces inside a turbofan engine compression system from fully glaciated ice crystal clouds often formed at high altitude near deep convective weather systems. It is shown from the analysis that generally there could be two distinct types of ice formation: (1) when the "surface freezing fraction" is in the range of 0 to 1, dominated by the freezing of water melt from fully or partially melted ice crystals, the ice structure is formed from accretion with strong adhesion to the surface, and (2) when the "surface melting fraction" is the range of 0 to 1, dominated by the further melting of ice crystals, the ice structure is formed from accumulation of un-melted ice crystals with relatively weak bonding to the surface. The model captures important qualitative trends of the fundamental ice-crystal icing phenomenon reported earlier1,2 from the research collaboration work by NASA and the National Research Council (NRC) of Canada. Further, preliminary analysis of test data from the 2013 full scale turbofan engine ice crystal icing test3 conducted in the NASA Glenn Propulsion Systems Laboratory (PSL) has also suggested that (1) both types of ice formation occurred during the test, and (2) the model has captured some important qualitative trend of turning on (or off) the ice crystal ice formation process in the tested engine low pressure compressor (LPC) targeted area under different icing conditions that ultimately would lead to (or suppress) an engine core roll back (RB) event.

Possible Mechanisms for Turbofan Engine Ice Crystal Icing at High Altitude

NASA Technical Reports Server (NTRS)

Tsao, Jen-Ching; Struk, Peter M.; Oliver, Michael J.

2016-01-01

A thermodynamic model is presented to describe possible mechanisms of ice formation on unheated surfaces inside a turbofan engine compression system from fully glaciated ice crystal clouds often formed at high altitude near deep convective weather systems. It is shown from the analysis that generally there could be two distinct types of ice formation: (1) when the "surface freezing fraction" is in the range of 0 to 1, dominated by the freezing of water melt from fully or partially melted ice crystals, the ice structure is formed from accretion with strong adhesion to the surface, and (2) when the "surface melting fraction" is the range of 0 to 1, dominated by the further melting of ice crystals, the ice structure is formed from accumulation of un-melted ice crystals with relatively weak bonding to the surface. The model captures important qualitative trends of the fundamental ice-crystal icing phenomenon reported earlier (Refs. 1 and 2) from the research collaboration work by NASA and the National Research Council (NRC) of Canada. Further, preliminary analysis of test data from the 2013 full scale turbofan engine ice crystal icing test (Ref. 3) conducted in the NASA Glenn Propulsion Systems Laboratory (PSL) has also suggested that (1) both types of ice formation occurred during the test, and (2) the model has captured some important qualitative trend of turning on (or off) the ice crystal ice formation process in the tested engine low pressure compressor (LPC) targeted area under different icing conditions that ultimately would lead to (or suppress) an engine core roll back (RB) event.

FY16 Summary Report: Participation in the KOSINA Project

DOE Office of Scientific and Technical Information (OSTI.GOV)

Matteo, Edward N.; Hansen, Francis D.

Salt formations represent a promising host for disposal of nuclear waste in the United States and Germany. Together, these countries provided fully developed safety cases for bedded salt and domal salt, respectively. Today, Germany and the United States find themselves in similar positions with respect to salt formations serving as repositories for heat-generating nuclear waste. German research centers are evaluating bedded and pillow salt formations to contrast with their previous safety case made for the Gorleben dome. Sandia National Laboratories is collaborating on this effort as an Associate Partner, and this report summarizes that teamwork. Sandia and German research groupsmore » have a long-standing cooperative approach to repository science, engineering, operations, safety assessment, testing, modeling and other elements comprising the basis for salt disposal. Germany and the United States hold annual bilateral workshops, which cover a spectrum of issues surrounding the viability of salt formations. Notably, recent efforts include development of a database for features, events, and processes applying broadly and generically to bedded and domal salt. Another international teaming activity evaluates salt constitutive models, including hundreds of new experiments conducted on bedded salt from the Waste Isolation Pilot Plant. These extensive collaborations continue to build the scientific basis for salt disposal. Repository deliberations in the United States are revisiting bedded and domal salt for housing a nuclear waste repository. By agreeing to collaborate with German peers, our nation stands to benefit by assurance of scientific position, exchange of operational concepts, and approach to elements of the safety case, all reflecting cost and time efficiency.« less

Relationship of college student characteristics and inquiry-based geometrical optics instruction to knowledge of image formation with light-ray tracing

NASA Astrophysics Data System (ADS)

Isik, Hakan

This study is premised on the fact that student conceptions of optics appear to be unrelated to student characteristics of gender, age, years since high school graduation, or previous academic experiences. This study investigated the relationships between student characteristics and student performance on image formation test items and the changes in student conceptions of optics after an introductory inquiry-based physics course. Data was collected from 39 college students who were involved in an inquiry-based physics course teaching topics of geometrical optics. Student data concerning characteristics and previous experiences with optics and mathematics were collected. Assessment of student understanding of optics knowledge for pinholes, plane mirrors, refraction, and convex lenses was collected with, the Test of Image Formation with Light-Ray Tracing instrument. Total scale and subscale scores representing the optics instrument content were derived from student pretest and posttest responses. The types of knowledge, needed to answer each optics item correctly, were categorized as situational, conceptual, procedural, and strategic knowledge. These types of knowledge were associated with student correct and incorrect responses to each item to explain the existences and changes in student scientific and naive conceptions. Correlation and stepwise multiple regression analyses were conducted to identify the student characteristics and academic experiences that significantly predicted scores on the subscales of the test. The results showed that student experience with calculus was a significant predictor of student performance on the total scale as well as on the refraction subscale of the Test of Image Formation with Light-Ray Tracing. A combination of student age and previous academic experience with precalculus was a significant predictor of student performance on the pretest pinhole subscale. Student characteristic of years since high school graduation significantly predicted the gain in student scores on pinhole and plane-mirror items from the pretest to the posttest with those students who were most recent graduates from high school doing better. Multivariate and univariate analyses of variance of the Test of Image Formation with Light-Ray Tracing pinhole scale and individual item changes from the pretest to the posttest resulted in statistically significant mean differences between total scores as well as between various individual pinhole items. There were no significant changes for individual plane-mirror items from pretest to posttest. Results revealed that there is a perceivable relationship between student optics-content knowledge and the types of knowledge required by items. At the pretest, the greatest selection of wrong responses related to the items requiring situational type of knowledge and the fewest selection of wrong responses was relate to the items requiring procedural type of knowledge. Student selection of wrong options for each item revealed the following naive optics conceptions: pinholes do not create reversed images (pretest), size and sharpness of pinhole images are related to the focus of a pinhole camera (pretest and posttest); propagation of light rays are interpreted as being radial rather than directional (pretest and posttest); no conception of image formation and observation for parallel mirrors (pretest and posttest), the place of an image depends on the position of the observer (pretest and posttest), a plane mirror reflects the images of the objects placed at one side of the mirror and the observers who were positioned at the other side of the mirror can see them (pretest and posttest); applying the law of reflection to plane mirrors without considering the variations in angles of incidence and reflection (pretest and posttest), and image observation is confused with the image formation in mirrors placed perpendicular to one another (pretest and posttest). Future research should focus on the acquisition, development, and identification of reliable measures of optics concepts, processes, types of knowledge, and specific optics understanding (i.e., pinhole, plane-mirror). Future research should focus on the identification of the more critical concepts such as changes in size and sharpness of pinhole images, image observation, image formation in general, and image formation and observation in parallel mirrors. Future research can be conducted with a larger set of participants so as to compare different instructional methods and address instructional deficiencies using more efficient statistical methods. Comparative studies can be conducted to investigate the relations of various instructional strategies on student conceptions of optics.

Involving lay community researchers in epidemiological research: experiences from a seroprevalence study among sub-Saharan African migrants.

PubMed

Nöstlinger, Christiana; Loos, Jasna

2016-01-01

Community-based participatory research (CBPR) has received considerable attention during past decades as a method to increase community ownership in research and prevention. We discuss its application to epidemiological research using the case of second-generation surveillance conducted among sub-Saharan African (SSA) migrants in Antwerp city. To inform evidence-based prevention planning for this target group, this HIV-prevalence study used two-stage time-location sampling preceded by formative research. Extensive collaborative partnerships were built with community organizations, a Community Advisory Board provided input throughout the project, and community researchers were trained to participate in all phases of the seroprevalence study. Valid oral fluid samples for HIV testing were collected among 717 SSA migrants and linked to behavioural data assessed through an anonymous survey between December 2013 and August 2014. A qualitative content analysis of various data sources (extensive field notes, minutes of intervision, and training protocols) collected at 77 data collection visits in 51 settings was carried out to describe experiences with challenges and opportunities inherent to the CBPR approach at three crucial stages of the research process: building collaborative partnerships; implementing the study; dissemination of findings including prevention planning. The results show that CBPR is feasible in conducting scientifically sound epidemiological research, but certain requirements need to be in place. These include among others sufficient resources to train, coordinate, and supervise community researchers; continuity in the implementation; transparency about decision-taking and administrative procedures, and willingness to share power and control over the full research process. CBPR contributed to empowering community researchers on a personal level, and to create greater HIV prevention demand in the SSA communities.

The function of report components in the screening and reading of technical reports

NASA Technical Reports Server (NTRS)

Pinelli, T. E.; Cordle, V. M.; Vondran, R. F.

1984-01-01

A reader preference survey of engineers and scientists at the NASA Langley Research Center and in three professional/technical societies was conducted to determine the opinions of report users and producers concerning the format (organization) of NASA technical reports and the usage of technical report components. The survey questionnaire contained fourteen questions covering twelve survey topics. This article reports the findings of two survey topics: the components initially reviewed or read to determine whether to read a report in its entirety and the order in which report components are read.

Microgravity

NASA Image and Video Library

2004-04-15

Marshall Space Flight Center's researchers have conducted suborbital experiments with ZBLAN, an optical material capable of transmitting 100 times more signal and information than silica fibers. The next step is to process ZBLAN in a microgravity environment to stop the formation of crystallites, small crystals caused by a chemical imbalances. Scientists want to find a way to make ZBLAN an amorphous (without an internal shape) material. Producing a material such as this will have far-reaching implications on advanced communications, medical and manufacturing technologies using lasers, and a host of other products well into the 21st century.

Toward Real-Time Infoveillance of Twitter Health Messages.

PubMed

Colditz, Jason B; Chu, Kar-Hai; Emery, Sherry L; Larkin, Chandler R; James, A Everette; Welling, Joel; Primack, Brian A

2018-06-21

There is growing interest in conducting public health research using data from social media. In particular, Twitter "infoveillance" has demonstrated utility across health contexts. However, rigorous and reproducible methodologies for using Twitter data in public health are not yet well articulated, particularly those related to content analysis, which is a highly popular approach. In 2014, we gathered an interdisciplinary team of health science researchers, computer scientists, and methodologists to begin implementing an open-source framework for real-time infoveillance of Twitter health messages (RITHM). Through this process, we documented common challenges and novel solutions to inform future work in real-time Twitter data collection and subsequent human coding. The RITHM framework allows researchers and practitioners to use well-planned and reproducible processes in retrieving, storing, filtering, subsampling, and formatting data for health topics of interest. Further considerations for human coding of Twitter data include coder selection and training, data representation, codebook development and refinement, and monitoring coding accuracy and productivity. We illustrate methodological considerations through practical examples from formative work related to hookah tobacco smoking, and we reference essential methods literature related to understanding and using Twitter data. (Am J Public Health. Published online ahead of print June 21, 2018: e1-e6. doi:10.2105/AJPH.2018.304497).

Formative research to develop a nutrition education intervention to improve dietary iron intake among women and adolescent girls through community kitchens in Lima, Peru.

PubMed

Creed-Kanashiro, Hilary M; Bartolini, Rosario M; Fukumoto, Mary N; Uribe, Tula G; Robert, Rebecca C; Bentley, Margaret E

2003-11-01

Formative research was conducted with 26 women and 16 adolescent girls to develop an education intervention through community kitchens (CK) in Lima, to increase their dietary iron intake and improve their iron status. A combination of qualitative research methods was used to explore perceptions about foods, nutrition, health, anemia and body image. The women recognized that there was a close association among eating well, "alimentarse bien", their health and prevention and treatment of anemia. They perceived that the nutritive value of a meal is determined primarily by its content of "nutritious" foods and by its being "balanced". Using this information the conceptual model of the education intervention was developed. The vulnerability of women to anemia was presented with the relationship between anemia and diet as the central focus. Feasible ways of achieving a nutritious diet were introduced to the community kitchens through promoting local heme iron sources and the consumption of beans with a vitamin C source. Animal source foods were amongst those considered to be nutritious and were "best buys" for iron content. CK searched for ways of assuring accessibility to these foods. The use of animal source foods in the community kitchen menus increased during the intervention.

The Interpersonal Adaptiveness of Dispositional Guilt and Shame: A Meta-Analytic Investigation.

PubMed

Tignor, Stefanie M; Colvin, C Randall

2017-06-01

Despite decades of empirical research, conclusions regarding the adaptiveness of dispositional guilt and shame are mixed. We use meta-analysis to summarize the empirical literature and clarify these ambiguities. Specifically, we evaluate how guilt and shame are uniquely related to pro-social orientation and, in doing so, highlight the substantial yet under-acknowledged impact of researchers' methodological choices. A series of meta-analyses was conducted investigating the relationship between dispositional guilt (or shame) and pro-social orientation. Two main methodological moderators of interest were tested: test format (scenario vs. checklist) and statistical analysis (semi-partial vs. zero-order correlations). Among studies employing zero-order correlations, dispositional guilt was positively correlated with pro-social orientation (k = 63, Mr = .13, p < .001), whereas dispositional shame was negatively correlated, (k = 47, Mr = -.05, p = .07). Test format was a significant moderator for guilt studies only, with scenario measures producing significantly stronger effects. Semi-partial correlations resulted in significantly stronger effects among guilt and shame studies. Although dispositional guilt and shame are differentially related to pro-social orientation, such relationships depend largely on the methodological choices of the researcher, particularly in the case of guilt. Implications for the study of these traits are discussed. © 2016 Wiley Periodicals, Inc.

Algorithms for detecting and predicting influenza outbreaks: metanarrative review of prospective evaluations

PubMed Central

Spreco, A; Timpka, T

2016-01-01

Objectives Reliable monitoring of influenza seasons and pandemic outbreaks is essential for response planning, but compilations of reports on detection and prediction algorithm performance in influenza control practice are largely missing. The aim of this study is to perform a metanarrative review of prospective evaluations of influenza outbreak detection and prediction algorithms restricted settings where authentic surveillance data have been used. Design The study was performed as a metanarrative review. An electronic literature search was performed, papers selected and qualitative and semiquantitative content analyses were conducted. For data extraction and interpretations, researcher triangulation was used for quality assurance. Results Eight prospective evaluations were found that used authentic surveillance data: three studies evaluating detection and five studies evaluating prediction. The methodological perspectives and experiences from the evaluations were found to have been reported in narrative formats representing biodefence informatics and health policy research, respectively. The biodefence informatics narrative having an emphasis on verification of technically and mathematically sound algorithms constituted a large part of the reporting. Four evaluations were reported as health policy research narratives, thus formulated in a manner that allows the results to qualify as policy evidence. Conclusions Awareness of the narrative format in which results are reported is essential when interpreting algorithm evaluations from an infectious disease control practice perspective. PMID:27154479

RIAD visual imaging branch assessment

NASA Technical Reports Server (NTRS)

Beam, Sherilee F.

1993-01-01

Every year the demand to visualize research efforts increases. The visualization provides the means to effectively analyze data and present the results. The technology support for visualization is constantly changing, improving, and being made available to users everywhere. As such, many researchers are entering into the practice of doing their own visualization in house - sometimes successfully, sometimes not. In an effort to keep pace with the visualization needs of researchers, the Visual Imaging Branch of the Research, Information, and Applications Division at NASA Langley Research Center has conducted an investigation into the current status of imaging technology and imaging production throughout the various research branches at the center. This investigation will allow the branch to evaluate its current resources and personnel in an effort to identify future directions for meeting the needs of the researchers at the center. The investigation team, which consisted of the ASEE fellow, the head of the video section, and the head of the photo section, developed an interview format that could be accomplished during a short interview period with researchers, and yet still provide adequate statistics about items such as in-house equipment and usage.

Construction of a manual of work processes and techniques from Centro de Dispensação de Medicamentos de Alto Custo (CEDMAC), Hospital de Clínicas, Unicamp.

PubMed

Bertolo, Manoel Barros; Ferreira, Bruno Silva de Araújo; Marchiore, Adriana G Mucke; Carvalho, Glaucia Pereira do Amaral; de Souza, Débora Pessoa; Psaltikidis, Eliane Molina

2014-01-01

The Centers for High Cost Medication (Centros de Medicação de Alto Custo, CEDMAC), Health Department, São Paulo were instituted by project in partnership with the Clinical Hospital of the Faculty of Medicine, USP, sponsored by the Foundation for Research Support of the State of São Paulo (Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP) aimed at the formation of a statewide network for comprehensive care of patients referred for use of immunobiological agents in rheumatological diseases. The CEDMAC of Hospital de Clínicas, Universidade Estadual de Campinas (HC-Unicamp), implemented by the Division of Rheumatology, Faculty of Medical Sciences, identified the need for standardization of the multidisciplinary team conducts, in face of the specificity of care conducts, verifying the importance of describing, in manual format, their operational and technical processes. The aim of this study is to present the methodology applied to the elaboration of the CEDMAC/HC-Unicamp Manual as an institutional tool, with the aim of offering the best assistance and administrative quality. In the methodology for preparing the manuals at HC-Unicamp since 2008, the premise was to obtain a document that is participatory, multidisciplinary, focused on work processes integrated with institutional rules, with objective and didactic descriptions, in a standardized format and with electronic dissemination. The CEDMAC/HC-Unicamp Manual was elaborated in 10 months, with involvement of the entire multidisciplinary team, with 19 chapters on work processes and techniques, in addition to those concerning the organizational structure and its annexes. Published in the electronic portal of HC Manuals in July 2012 as an e-Book (ISBN 978-85-63274-17-5), the manual has been a valuable instrument in guiding professionals in healthcare, teaching and research activities.

Earth2Class: Assessing Interactions Between Research Scientists and Classroom Teachers

NASA Astrophysics Data System (ADS)

Passow, M. J.; Iturrino, G.; Assumpcao, C. M.; Baggio, F. D.

2006-12-01

The Earth2Class Workshops at the Lamont-Doherty Earth Observatory (E2C) have brought together research scientists and secondary school teachers from the New York metropolitan area and neighboring states to learn about outcomes of investigations into many aspects of the Earth System and processes involved in making such discoveries. NSF Geoscience Education Grant 0331232 has provided support for an expanded program over the past three years, described at the 2005 Fall Meeting. We now present the results of formative and summative assessments of the effectiveness of this project. Among questions explored were: What aspects of the E2C format and educational technology most effectively connect research discoveries with classroom teachers and their students? What benefits result through interactions among teachers from highly diverse districts and backgrounds with research scientists, and what benefits do the scientists gain from participation? How can the E2C format serve as a model for other research institution-school district partnerships as a mechanism for broader dissemination of scientific discoveries? Formative evaluations were conducted through online and written responses from participants, feedback from conference presentations, and comments posted on teacher list-servers. Almost all responses were overwhelmingly positive. Formal, summative studies conducted by two external grant evaluators also noted many positive results. One abridged conclusion states: The E2C project is a unique and effective professional development program that can stimulate teachers and keep them informed of the vital content they teach. It is a model worthy of duplication in other subject areas and across the country. It may help to retain the best of our teachers and overcome an unfortunate attrition rate. The direct contact with professional scientists and collegial interactions in a non-threatening professional environment are critical dispositional and cognitive components of this success. The second reports: The E2C program and its associated resources provide unique, high-quality professional development to both teachers in the E2C workshops and to those that seek on-line professional development and/or useful classroom materials and ideas. The E2C website promises to be a site of first choice when searching for curricular materials. Although there are negligible concerns regarding the scalability of the program, Earth2Class has proven that cutting-edge research in the Earth sciences can be made accessible to classroom teachers, who, in turn, can share exciting research with their students. The E2C concept clearly warrants further exploration and testing at other sites. This exciting, innovative program has successfully modeled a synergistic relationship between notable scientists and K-12 teachers. Through this program, K-12 teachers receive unparalleled professional development and researchers are provided with a clearly delineated, direct means of achieving their mandated education and public outreach (Criterion 2) responsibilities. One can hardly imagine a more fruitful, win/win situation. Cooperating scientists utilized this program to make results of their investigations known to hundreds of teachers and, through them, thousands of students. Participants in the Workshops and others using archived versions on www.earth2class.org gained new understandings about many areas of geoscience and how scientists identify questions to explore. Middle and high school Earth Science teachers and students benefited from the myriad of online resources.

Research on numerical simulation technology about regional important pollutant diffusion of haze

NASA Astrophysics Data System (ADS)

Du, Boying; Ma, Yunfeng; Li, Qiangqiang; Wang, Qi; Hu, Qiongqiong; Bian, Yushan

2018-02-01

In order to analyze the formation of haze in Shenyang and the factors that affect the diffusion of pollutants, the simulation experiment adopted in this paper is based on the numerical model of WRF/CALPUFF coupling. Simulation experiment was conducted to select PM10 of Shenyang City in the period from March 1 to 8, and the PM10 in the regional important haze was simulated. The survey was conducted with more than 120 enterprises section the point of the emission source of this experiment. The contrastive data were analyzed with 11 air quality monitoring points, and the simulation results were compared. Analyze the contribution rate of each typical enterprise to the air quality, verify the correctness of the simulation results, and then use the model to establish the prediction model.

Evaluation of susceptibility of polymer and rubber materials intended into contact with drinking water on biofilm formation

PubMed

Szczotko, Maciej; Stankiewicz, Agnieszka; Jamsheer-Bratkowska, Małgorzata

Plumbing materials in water distribution networks and indoor installations are constantly evolving. The application of new, more economical solutions with plastic materials eliminates the corrosion problems, however, do not fully protect the consumer against secondary microbial contamination of water intended for human consumption caused by the presence of a biofilm on the inner surface of materials applied. National Institute of Public Health - National Institute of Hygiene conducts research aimed at a comprehensive assessment of this type of materials, resulting their further marketing authorization in Poland. Evaluation and comparison of polymer and rubber materials intended to contact with water for the susceptibility to biofilm formation. Plastic materials (polyethylene, polypropylene, polyvinyl chloride) and rubber compounds (EPDM, NBR), from different manufacturers were evaluated. The study was carried out on 37 samples, which were divided into groups according to the material of which they were made. The testing was conducted according to the method based on conditions of dynamic flow of tap water. The level of bioluminescence in swabs taken from the surface of the tested materials was investigated with a luminometer. Evaluation of plastic materials does not show major objections in terms of hygienic assessment. All materials met the evaluation criteria established for methodology used. In case of rubber compounds, a substantial part clearly exceeded the limit values, which resulted in their negative assessment and elimination of these materials from domestic market. High susceptibility to the formation of biofilm in the group of products made of rubber compounds has been demonstrated. Examined plastic materials, except for several cases, do not revealed susceptibility to biofilm formation, but application of plastics for distribution of water intended for human consumption does not fully protect water from secondary, microbiological contamination. Complete verification of plumbing materials including biofilm formation test before their introduction into the domestic market should be continued.

Barriers and facilitators to the implementation of antenatal syphilis screening and treatment for the prevention of congenital syphilis in the Democratic Republic of Congo and Zambia: results of qualitative formative research.

PubMed

Nkamba, Dalau; Mwenechanya, Musaku; Kilonga, Arlette Mavila; Cafferata, Maria Luisa; Berrueta, Amanda Mabel; Mazzoni, Agustina; Althabe, Fernando; Garcia-Elorrio, Ezequiel; Tshefu, Antoniette K; Chomba, Elwyn; Buekens, Pierre M; Belizan, Maria

2017-08-14

The impact of untreated syphilis during pregnancy on neonatal health remains a major public health threat worldwide. Given the high prevalence of syphilis during pregnancy in Zambia and Democratic Republic of Congo (DRC), the Preventive Congenital Syphilis Trial (PCS Trial), a cluster randomized trial, was proposed to increase same-day screening and treatment of syphilis during antenatal care visits. To design an accepted and feasible intervention, we conducted a qualitative  formative research. Our objective was to identify context-specific  barriers and facilitators to the implementation of antenatal screening and treatment during pregnancy. Qualitative research included in-depth semi-structured interviews with clinic administrators, group interviews with health care providers, and focus groups with pregnant women in primary care clinics (PCCs) in Kinshasa (DRC) and Lusaka (Zambia). A total of 112 individuals participated in the interviews and focus groups. Barriers for the implementation of syphilis testing and treatment were identified at the a) system level: fragmentation of the health system, existence of ANC guidelines in conflict with proposed intervention, poor accessibility of clinics (geographical and functional), staff and product shortages at the PCCs; b) healthcare providers' level: lack of knowledge and training about evolving best practices, reservations regarding same-day screening and treatment; c) Pregnant women level: late enrollment in ANC, lack of knowledge about consequences and treatment of syphilis, and stigma. Based on these results, we developed recommendations for the design of the PCS Trial intervention. This research allowed us to identify barriers and facilitators to improve the feasibility and acceptability of a behavioral intervention. Formative research is a critical step in designing appropriate and effective interventions by closing the "know-do gap".

Understanding glass formation and ion transport in polymeric ionic liquids using computer simulations

NASA Astrophysics Data System (ADS)

Patra, Tarak; Yang, Junhong; Cheng, Yiz; Simmons, David

Polymeric ionic liquids (PILs) are very promising materials to enable more environmentally stable high density energy storage devices. Realization of PILs providing high environmental and mechanical stability while maximizing ion conductivity would be accelerated by an improved molecular level understanding of their structure and dynamics. Extensive evidence suggests that both mechanical properties and ion conductivity in anhydrous PILs are intimately related to the PIL's glass formation behavior. This represents a major challenge to the rational design of these materials, given that the basic nature of glass formation and its connection to molecular properties remains a substantial open question in polymer and condensed matter physics. Here we describe coarse-grained and atomistic molecular dynamics simulations probing the relationship between PIL architecture and interactions, glass formation behavior, and ion transport characteristics. These studies provide guidance towards the design of PILs with improved stability and ion conductivity for future energy applications.

Planetary Science from NASA's WB-57 Canberra High Altitude Research Aircraft During the Great American Eclipse of 2017

NASA Astrophysics Data System (ADS)

Tsang, C.; Caspi, A.; DeForest, C. E.; Durda, D. D.; Steffl, A.; Lewis, J.; Wiseman, J.; Collier, J.; Mallini, C.; Propp, T.; Warner, J.

2017-12-01

The Great American Eclipse of 2017 provided an excellent opportunity for heliophysics research on the solar corona and dynamics that encompassed a large number of research groups and projects, including projects flown in the air and in space. Two NASA WB-57F Canberra high altitude research aircraft were launched from NASA's Johnson Space Center, Ellington Field into the eclipse path. At an altitude of 50,000ft, and outfitted with visible and near-infrared cameras, these aircraft provided increased duration of observations during eclipse totality, and much sharper images than possible on the ground. Although the primary mission goal was to study heliophysics, planetary science was also conducted to observe the planet Mercury and to search for Vulcanoids. Mercury is extremely challenging to study from Earth. The 2017 eclipse provided a rare opportunity to observe Mercury under ideal astronomical conditions. Only a handful of near-IR thermal images of Mercury exist, but IR images provide critical surface property (composition, albedo, porosity) information, essential to interpreting lower resolution IR spectra. Critically, no thermal image of Mercury currently exists. By observing the nightside surface during the 2017 Great American Eclipse, we aimed to measure the diurnal temperature as a function of local time (longitude) and attempted to deduce the surface thermal inertia integrated down to a few-cm depth below the surface. Vulcanoids are a hypothesized family of asteroids left over from the formation of the solar system, in the dynamically stable orbits between the Sun and Mercury at 15-45 Rs (4-12° solar elongation). Close proximity to the Sun, plus their small theoretical sizes, make Vulcanoid searches rare and difficult. The 2017 eclipse was a rare opportunity to search for Vulcanoids. If discovered these unique, highly refractory and primordial bodies would have a significant impact on our understanding of solar system formation. Only a handful of deep searches have been conducted. Our observations will only be the second time ever a search for Vulcanoids will have been conducted in the NIR. In this presentation, I will review our NASA flight program, and focus on the planetary science observations that came from the Great American Eclipse of 2017.

Validity of High School Physic Module With Character Values Using Process Skill Approach In STKIP PGRI West Sumatera

NASA Astrophysics Data System (ADS)

Anaperta, M.; Helendra, H.; Zulva, R.

2018-04-01

This study aims to describe the validity of physics module with Character Oriented Values Using Process Approach Skills at Dynamic Electrical Material in high school physics / MA and SMK. The type of research is development research. The module development model uses the development model proposed by Plomp which consists of (1) preliminary research phase, (2) the prototyping phase, and (3) assessment phase. In this research is done is initial investigation phase and designing. Data collecting technique to know validation is observation and questionnaire. In the initial investigative phase, curriculum analysis, student analysis, and concept analysis were conducted. In the design phase and the realization of module design for SMA / MA and SMK subjects in dynamic electrical materials. After that, the formative evaluation which include self evaluation, prototyping (expert reviews, one-to-one, and small group. At this stage validity is performed. This research data is obtained through the module validation sheet, which then generates a valid module.

CAPER Team Innovations in Teaching and Learning in ASTRO 101

NASA Astrophysics Data System (ADS)

Slater, Timothy F.; Prather, E. E.; Bailey, J. M.; Bardar, E.; Brissenden, G.; Dokter, E. F.; Hudgins, D.; Keller, J.

2006-12-01

The Conceptual Astronomy and Physics Education Research (CAPER) Team, based at the University of Arizona but drawing on the collective expertise of astronomy educators around the world, is conducting scholarly research and developing instructional strategies in an effort to support high-quality astronomy teaching. One avenue of research is focused on creating and validating conceptual inventories that instructors can use to measure the effectiveness of their instructional interventions. We have recently completed new inventories in the topic areas of (1) light and spectra; (2) stars and stellar formation; and (3) planetary atmospheres and the greenhouse effect. In addition, we are using results from research on students’ naive beliefs and reasoning difficulties to development instructional strategies that promote a learner centered classroom. Our research into the effectiveness of two such curriculum projects (Lecture-Tutorials for Introductory Astronomy and Ranking Tasks for Introductory Astronomy) show that these curriculum result in statistically significant gains in student understanding across a broad range of topics, much greater than lecture alone. A third avenue of research centers on improving how ASTRO 101 is taught on a national level. Informed by our continual evaluation and fine tuning of different forms of collaborative group learning and peer instruction teaching strategies, we have developed a multi-day series of workshops that are designed to help faculty better implement innovative teaching strategies that promote a learner-centered teaching environment in the ASTO 101 large lecture course. The workshops are being assessed and iteratively improved through formative evaluation approaches aimed at determining to what extent they have a positive impact on classroom practice.

SECONDARY ORGANIC AEROSOL FORMATION FROM THE OXIDATION OF AROMATIC HYDROCARBONS IN THE PRESENCE OF DRY SUBMICRON AMMONIUM SULFATE AEROSOL

EPA Science Inventory

A laboratory study was conducted to examine formation of secondary organic aerosols. A smog chamber system was developed for studying gas-aerosol interactions in a dynamic flow reactor. These experiments were conducted to investigate the fate of gas and aerosol phase compounds ...