experiment representativity studies: Topics by Science.gov

Sample records for experiment representativity studies

Debiasing affective forecasting errors with targeted, but not representative, experience narratives.

PubMed

Shaffer, Victoria A; Focella, Elizabeth S; Scherer, Laura D; Zikmund-Fisher, Brian J

2016-10-01

To determine whether representative experience narratives (describing a range of possible experiences) or targeted experience narratives (targeting the direction of forecasting bias) can reduce affective forecasting errors, or errors in predictions of experiences. In Study 1, participants (N=366) were surveyed about their experiences with 10 common medical events. Those who had never experienced the event provided ratings of predicted discomfort and those who had experienced the event provided ratings of actual discomfort. Participants making predictions were randomly assigned to either the representative experience narrative condition or the control condition in which they made predictions without reading narratives. In Study 2, participants (N=196) were again surveyed about their experiences with these 10 medical events, but participants making predictions were randomly assigned to either the targeted experience narrative condition or the control condition. Affective forecasting errors were observed in both studies. These forecasting errors were reduced with the use of targeted experience narratives (Study 2) but not representative experience narratives (Study 1). Targeted, but not representative, narratives improved the accuracy of predicted discomfort. Public collections of patient experiences should favor stories that target affective forecasting biases over stories representing the range of possible experiences. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
The representation of patient experience and satisfaction in physician rating sites. A criteria-based analysis of English- and German-language sites

PubMed Central

2010-01-01

Background Information on patient experience and satisfaction with individual physicians could play an important role for performance measures, improved health care and health literacy. Physician rating sites (PRSs) bear the potential to be a widely available source for this kind of information. However, patient experience and satisfaction are complex constructs operationalized by multiple dimensions. The way in which PRSs allow users to express and rate patient experience and satisfaction could likely influence the image of doctors in society and the self-understanding of both doctors and patients. This study examines the extent to which PRSs currently represent the constructs of patient experience and satisfaction. Methods First, a systematic review of research instruments for measuring patient experience and satisfaction was conducted. The content of these instruments was analyzed qualitatively to create a comprehensive set of dimensions for patient experience and patient satisfaction. Second, PRSs were searched for systematically in English-language and German-language search engines of Google and Yahoo. Finally, we classified every structured question asked by the different PRS using the set of dimensions of patient experience and satisfaction. Results The qualitative content analysis of the measurement instruments produced 13 dimensions of patient experience and satisfaction. We identified a total of 21 PRSs. No PRSs represented all 13 dimensions of patient satisfaction and experience with its structured questions. The 3 most trafficked English-language PRS represent between 5 and 6 dimensions and the 3 most trafficked German language PRSs between 8 and 11 dimensions The dimensions for patient experience and satisfaction most frequently represented in PRSs included diversely operationalized ones such as professional competence and doctor-patient relationship/support. However, other less complex but nevertheless important dimensions such as communication skills and information/advice were rarely represented, especially in English-language PRSs. Conclusions Concerning the potential impact of PRSs on health systems, further research is needed to show which of the current operationalizations of patient experience and satisfaction presented in our study are establishing themselves in PRSs. Independently of this factual development, the question also arises whether and to what extent health policy can and should influence the operationalization of patient experience and satisfaction in PRSs. Here, the challenge would be to produce a set of dimensions capable of consensus from among the wide range of operationalizations found by this study. PMID:21138579
Project Explorer's unique experiments: Get Away Special #007

NASA Technical Reports Server (NTRS)

Henderson, A. J., Jr.

1986-01-01

The Project Explorer payload represents the first attempt at broadcasting digitized voice signals via a Space Shuttle flight on amateur radio frequencies. These amateur ham-radio frequencies will be transmitting real time data while the experiments are operating. Experiments 1, 2, and 3 represent the work of students ranging from materials processing to the science of biology. Experiment 1 will study the solidification of two hypereutectic alloys, lead-antimony and aluminum-copper. Experiment 2 will investigate the examination and growth of radish seeds in space. Experiment 3 will examine the electrochemical growth process of potassium tetrocyonoplatinate hydrate crystals and Experiment 4 involves amateur radio transmissions, monitoring and support of the entire Get Away Special (GAS) 007 payload.
Experiences of women with a diagnosis of breast cancer: a clinical pathway approach.

PubMed

Lindop, E; Cannon, S

2001-06-01

The study presented in this paper formed the first part of a large survey of breast cancer patients in one health authority in England, UK looking at individual needs expressed by women with a diagnosis of breast cancer. The paper provides an account of the experiences of 12 women with a diagnosis of breast cancer. The women represent a wide age range and different stages of illness. The transcribed accounts of the women were analysed by means of Qualitative Solutions and Research, Non-Numerical Unstructured Data Indexing Searching and Theorising (QSR*NUDIST). The study examined the individual experiences of women with a diagnosis of breast cancer and its aftermath as they passed through different stages related to it. The women's experiences are presented within the conceptual framework of the clinical pathway and their accounts represent their journey along the pathway. Various significant points in this journey are portrayed representing the women's reactions to diagnosis, treatment, femininity and body image, support, family and friends, information and after care.
Modeling and Depletion Simulations for a High Flux Isotope Reactor Cycle with a Representative Experiment Loading

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

Chandler, David; Betzler, Ben; Hirtz, Gregory John

2016-09-01

The purpose of this report is to document a high-fidelity VESTA/MCNP High Flux Isotope Reactor (HFIR) core model that features a new, representative experiment loading. This model, which represents the current, high-enriched uranium fuel core, will serve as a reference for low-enriched uranium conversion studies, safety-basis calculations, and other research activities. A new experiment loading model was developed to better represent current, typical experiment loadings, in comparison to the experiment loading included in the model for Cycle 400 (operated in 2004). The new experiment loading model for the flux trap target region includes full length 252Cf production targets, 75Se productionmore » capsules, 63Ni production capsules, a 188W production capsule, and various materials irradiation targets. Fully loaded 238Pu production targets are modeled in eleven vertical experiment facilities located in the beryllium reflector. Other changes compared to the Cycle 400 model are the high-fidelity modeling of the fuel element side plates and the material composition of the control elements. Results obtained from the depletion simulations with the new model are presented, with a focus on time-dependent isotopic composition of irradiated fuel and single cycle isotope production metrics.« less
Transactional processes in the development of adult personality disorder symptoms.

PubMed

Carlson, Elizabeth A; Ruiz, Sarah K

2016-08-01

The development of adult personality disorder symptoms, including transactional processes of relationship representational and behavioral experience from infancy to early adolescence, was examined using longitudinal data from a risk sample (N = 162). Significant preliminary correlations were found between early caregiving experience and adult personality disorder symptoms and between representational and behavioral indices across time and adult symptomatology. Significant correlations were also found among diverse representational assessments (e.g., interview, drawing, and projective narrative) and between concurrent representational and observational measures of relationship functioning. Path models were analyzed to investigate the combined relations of caregiving experience in infancy; relationship representation and experience in early childhood, middle childhood, and early adolescence; and personality disorder symptoms in adulthood. The hypothesized model representing interactive contributions of representational and behavioral experience represented the data significantly better than competing models representing noninteractive contributions. Representational and behavioral indicators mediated the link between early caregiving quality and personality disorder symptoms. The findings extend previous studies of normative development and support an organizational developmental view that early relationship experiences contribute to socioemotional maladaptation as well as adaptation through the progressive transaction of mutually informing expectations and experience.
Evidence, Argument and Social Responsibility: First-Year Students' Experiences of Information Literacy when Researching an Essay

ERIC Educational Resources Information Center

Lupton, Mandy

2008-01-01

This paper describes a phenomenographic study of undergraduates' experiences of information literacy when researching an essay in a first-year environmental studies course. Three hierarchical categories were identified that represented students' experiences: (i) seeking evidence; (ii) developing an argument; and (iii) learning as a social…
The Experiences of Intimate Relationships by People with Intellectual Disabilities: A Qualitative Study

ERIC Educational Resources Information Center

Rushbrooke, Elizabeth; Murray, Craig; Townsend, Samantha

2014-01-01

Background: People with intellectual disabilities face attitudinal and service barriers when attempting to form intimate relationships. To date, their experiences and views are under-represented in the existing evidence base. Method: The aim of this study was to carry out an interpretative phenomenological analysis exploring the experience of…
European dry cooling tower operating experience

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

DeSteese, J.G.; Simhan, K.

1976-03-01

Interviews were held with representatives of major plants and equipment manufacturers to obtain current information on operating experience with dry cooling towers in Europe. The report documents the objectives, background, and organizational details of the study, and presents an itemized account of contacts made to obtain information. Plant selection was based on a merit index involving thermal capacity and length of service. A questionnaire was used to organize operational data, when available, into nine major categories of experience. Information was also solicited concerning the use of codes and standards to ensure the achievement of cooling tower performance. Several plant operatorsmore » provided finned-tube samples for metallographic analysis. Additionally, information on both operating experience and developing technology was supplied by European technical societies and research establishments. Information obtained from these contacts provides an updated and representative sample of European experience with dry cooling towers, which supplements some of the detailed reviews already available in the literature. In addition, the study presents categorized operating experience with installations which have not been reviewed so extensively, but nevertheless, have significant operational histories when ranked by the merit index. The contacts and interviews reported in the survey occurred between late March and October 1975. The study was motivated by the expressed interest of U.S. utility industry representatives who expect European experience to provide a basis of confidence that dry cooling is a reliable technology, applicable when necessary, to U.S. operating requirements.« less
Experiences of Material Hardships among TANF Leavers

ERIC Educational Resources Information Center

Hunter, Tamara; Santhiveeran, Janaki

2005-01-01

Experiences of food insufficiencies, inadequate access to health care, and housing-related hardships represent how financial strain negatively impacts the entire family. The purpose of this study was to examine experiences of material hardships by TANF leavers and to understand factors that are associated with experiences of material hardship.…
Ethnocultural women's experiences of breast cancer: a qualitative meta-study.

PubMed

Howard, A Fuchsia; Balneaves, Lynda G; Bottorff, Joan L

2007-01-01

A growing number of studies have been conducted that explore the breast cancer experiences of women from diverse ethnocultural groups. To advance knowledge and provide a foundation for future research, a synthesis was conducted of 15 qualitative research studies focusing on women from ethnocultural groups diagnosed with breast cancer. A qualitative meta-study approach was used that included analysis of the theoretical orientations and methodological approaches underlying the research, and an interpretive synthesis of research findings. Ethnocultural groups represented in the studies included Asian American, Aboriginal, Hispanic, and African American women. The synthesis revealed diverse experiences within and among these ethnocultural groups represented in 5 major themes: (a) the "othered" experience of a breast cancer diagnosis, (b) the treatment experience as "other," (c) losses associated with breast cancer, (d) the family context of breast cancer experiences, and (e) coping with cancer through spirituality and community involvement. The integration of findings from the 15 studies also revealed how methodological and theoretical approaches to conducting this research influenced understandings of the experiences of breast cancer. Further experiential breast cancer research with ethnocultural groups is needed, as well as the use of research methods that illuminate the ways that ethnicity, class, age, and gender relations are played out in healthcare settings.
Space Construction Experiment Definition Study (SCEDS), part 1. Volume 2: Study results

NASA Technical Reports Server (NTRS)

1981-01-01

A basic Space Shuttle flight experiment which will provide needed data on the construction of large space systems from the Orbiter was defined. The predicted dynamic behavior of a representative large structure, on-orbit construction operations, and Orbiter control during and after construction were studied. Evolutionary or supplemental flight experiments for the development or augmentation of a basic flight experiment were identified and defined. The study was divided into six major tasks with appropriate sub-tasks noted.
Dialect and Influences on the Academic Experiences of College Students

ERIC Educational Resources Information Center

Dunstan, Stephany Brett; Jaeger, Audrey J.

2015-01-01

The dialects that college students speak represent a type of diversity that can influence many elements of their experiences in college, including academic experiences. In this study, we examined the influence of speaking a stigmatized dialect on academic experiences for White and African American students (both male and female) from rural…
Safe Schools? Transgender Youth's School Experiences and Perceptions of School Climate.

PubMed

Day, Jack K; Perez-Brumer, Amaya; Russell, Stephen T

2018-06-01

The magnitude of gender identity-related disparities in school-based outcomes is unknown because of a lack of representative studies that include measures of gender identity. By utilizing a representative sample generalizable to a broader population, this study elucidates the size of gender identity-related disparities, independent of sexual orientation, in school experiences associated with school connectedness and perceptions of school climate. Additionally, the inclusion of and comparison to results of a large non-representative sample allows for more direct comparisons to previous studies of the school experiences of transgender youth. The analyses in this study primarily draw on a sample of 31,896 youth representative of the middle and high school population in California who participated in the 2013-2015 California Student Survey (a subsample of the California Healthy Kids Survey, which includes the largest known sample of transgender youth). Over half the sample identified their sex as female (51.3%), and 398 identified as transgender (1.0%). The sample was racially and ethnically diverse: 30.7% identified as multiracial, 33.0% as White, 11.1% as Asian, 7.4% as Black, and 52.9% as Hispanic. Findings from multilevel analyses show that relative to non-transgender youth, transgender youth were more likely to be truant from school, to experience victimization and bias-based bullying, and to report more negative perceptions of school climate, though did not differ in self-reported grades. The findings have implications for improving school policies and practices to create safer and more supportive school climates for all youth.
Changing Minds: The Impact of Study Abroad Components on Students' Changes in Their Religious Faith

ERIC Educational Resources Information Center

Poag, Trevor; Sperandio, Jill

2015-01-01

Universities increasingly prioritize intercultural learning experiences that prepare students to become competent professionals in an interconnected world (Egron-Polak, 2012; de Witt, 2009). Study abroad represents one such learning experience for U.S. university students. Study abroad programs, although varies in structure and curriculum, share…
Learning through Experience: The Transition from Doctoral Student to Social Work Educator

ERIC Educational Resources Information Center

Oktay, Julianne S.; Jacobson, Jodi M.; Fisher, Elizabeth

2013-01-01

The researchers conducted an exploratory study using grounded theory qualitative research methods to examine experiences of social work doctoral students as they learned to teach ("N"?=?14). A core category, "learning through experience," representing a basic social process, was identified. The doctoral students experienced…
Roles & Responsibilities of the Women Leading American Islamic Schools

ERIC Educational Resources Information Center

DeCuir, Amaarah

2016-01-01

Literature of educational leadership often fails to represent the experiences of faith-based school leaders, particularly women. This study seeks to position the experiences of American Islamic school leaders in a larger context of educational leadership roles, responsibilities, and practices. This national, qualitative study utilized an Islamic…
The Student Experience of Distance Education: Reviews of Two Qualitative Theses Designed to Explore the Day-to-Day Experience of Learners Studying Online

ERIC Educational Resources Information Center

Kinash, Shelley; Crichton, Susan

2003-01-01

There is an emerging body of published research inquiring into distance education, yet the student experience is under-represented. Berge and Mrozowski (2001) examined ten years (1990-99) of dissertations and journal articles from four distance education journals. They reported that of 1,419 publications, 890 depicted research studies. They…
Space Construction Experiment Definition Study (SCEDS), part 1. Volume 1: Executive summary

NASA Technical Reports Server (NTRS)

1981-01-01

Definition was completed on a basic flight experiment which will provide data on the construction of large space systems from the orbiter which could not be practicably obtained from ground tests. Dynamic behavior of a representative large structure was predicted. On-orbit construction operations were studied. Orbiter control during and after construction was investigated. Evolutionary or supplemental flight experiments for the development of augmentation of a basic flight experiment were identified and defined.
Complementation studies in Niemann-Pick disease type C indicate the existence of a second group.

PubMed Central

Steinberg, S J; Ward, C P; Fensom, A H

1994-01-01

Niemann-Pick disease type C is a clinically heterogeneous storage disorder with an unknown primary metabolic defect. We have undertaken somatic cell hybridisation experiments using skin fibroblast strains from 12 patients representing a wide clinical spectrum. Preliminary experiments using filipin staining of free cholesterol as a marker for complementation indicated the existence of one major group (group alpha) and one minor group (group beta) represented by one mutant strain. Subsequent experiments in which sphingomyelinase activity was measured as a marker for complementation using five mutant strains showing activity consistently < 40% control levels confirmed the existence of the second group. Images PMID:8071958

The body unbound: vestibular-motor hallucinations and out-of-body experiences.

PubMed

Cheyne, J Allan; Girard, Todd A

2009-02-01

Among the varied hallucinations associated with sleep paralysis (SP), out-of-body experiences (OBEs) and vestibular-motor (V-M) sensations represent a distinct factor. Recent studies of direct stimulation of vestibular cortex report a virtually identical set of bodily-self hallucinations. Both programs of research agree on numerous details of OBEs and V-M experiences and suggest similar hypotheses concerning their association. In the present study, self-report data from two on-line surveys of SP-related experiences were employed to assess hypotheses concerning the causal structure of relations among V-M experiences and OBEs during SP episodes. The results complement neurophysiological evidence and are consistent with the hypothesis that OBEs represent a breakdown in the normal binding of bodily-self sensations and suggest that out-of-body feelings (OBFs) are consequences of anomalous V-M experiences and precursors to a particular form of autoscopic experience, out-of-body autoscopy (OBA). An additional finding was that vestibular and motor experiences make relatively independent contributions to OBE variance. Although OBEs are superficially consistent with universal dualistic and supernatural intuitions about the nature of the soul and its relation to the body, recent research increasingly offers plausible alternative naturalistic explanations of the relevant phenomenology.
Cross-border-assisted reproduction: a qualitative account of UK travellers' experiences.

PubMed

Hudson, Nicky; Culley, Lorraine; Blyth, Eric; Norton, Wendy; Pacey, Allan; Rapport, Frances

2016-06-01

Surveys on patients' experiences of cross-border fertility treatment have reported a range of positive and challenging features. However, the number of such studies is limited, and there is no detailed qualitative account of the experiences of UK patients who travel overseas for fertility treatment. The present study used a cross-sectional, qualitative design and in-depth interviews. Fifty-one participants (41 women and 10 men, representing 41 treatment 'cases') participated in semi-structured interviews. The experiences reported were broadly positive with a large proportion of participants (39 cases, 95%) citing a favourable overall experience with only two cases (5%) reporting a more negative experience. Thematic analysis revealed 6 major categories and 20 sub-categories, which described the positive and challenging aspects of cross-border fertility travel. The positive aspects were represented by the categories: 'access', 'control' and 'care and respect'. The more challenging aspects were categorized as 'logistics and coordination of care', 'uncertainty' and 'cultural dissonance'. The study confirms findings from others that despite some challenges, there is a relatively high level of patient satisfaction with cross-border treatment with participants able to extend the boundaries of their fertility-seeking trajectories and in some cases, regain a sense of control over their treatment.
Modified Petri net model sensitivity to workload manipulations

NASA Technical Reports Server (NTRS)

White, S. A.; Mackinnon, D. P.; Lyman, J.

1986-01-01

Modified Petri Nets (MPNs) are investigated as a workload modeling tool. The results of an exploratory study of the sensitivity of MPNs to work load manipulations in a dual task are described. Petri nets have been used to represent systems with asynchronous, concurrent and parallel activities (Peterson, 1981). These characteristics led some researchers to suggest the use of Petri nets in workload modeling where concurrent and parallel activities are common. Petri nets are represented by places and transitions. In the workload application, places represent operator activities and transitions represent events. MPNs have been used to formally represent task events and activities of a human operator in a man-machine system. Some descriptive applications demonstrate the usefulness of MPNs in the formal representation of systems. It is the general hypothesis herein that in addition to descriptive applications, MPNs may be useful for workload estimation and prediction. The results are reported of the first of a series of experiments designed to develop and test a MPN system of workload estimation and prediction. This first experiment is a screening test of MPN model general sensitivity to changes in workload. Positive results from this experiment will justify the more complicated analyses and techniques necessary for developing a workload prediction system.
Summer Employment and Community Experiences of Transition-Age Youth with Severe Disabilities

ERIC Educational Resources Information Center

Carter, Erik W.; Ditchman, Nicole; Sun, Ye; Trainor, Audrey A.; Swedeen, Beth; Owens, Laura

2010-01-01

Although early work experiences during high school represent one of the most consistent predictors of postschool employment for young adults with disabilities, little is known about how these adolescents might access these valuable transition experiences. This study examined the summer employment and community activities of 136 high school…
Differences in Developmental Experiences for Commonly Used Categories of Organized Youth Activities

ERIC Educational Resources Information Center

Hansen, David M.; Skorupski, William P.; Arrington, Tiffany L.

2010-01-01

The coherence of adolescents' self-reported learning experiences between subgroups of organized youth activities within five commonly used categories was evaluated. Data for the present study come from a representative sample of eleventh grade adolescents' reports on learning experiences in an organized youth activity using the Youth Experience…
A Religious Experience? Personal, Parental, and Peer Religiosity and the Academic Success of Sexual-Minority Youth Using Nationally Representative Samples

ERIC Educational Resources Information Center

Gottfried, Michael A.; Polikoff, Morgan S.

2012-01-01

Using nationally representative transcript data, this study is the first to include a discussion of religiosity in the context of sexual-minority students' academic achievement. This study examines the issue in three capacities: first, by comparing school success of sexual-minority youth to a non-sexual-minority reference group; second, by…
Making Meaning with Multimedia in Secondary English Language Arts: A Multiple Case Study

ERIC Educational Resources Information Center

Mahoney, Kerrigan Rose

2016-01-01

The purpose of this multiple case study was to learn about how secondary English language arts (ELA) teachers help students to make meaning with multimedia. The study focused on how and why teachers plan and implement meaning-making learning experiences. The cases represent the experiences and perspectives of five ELA teachers who use digital and…
None of the Above: Strategies for Inclusive Teaching with "Representative" Data

ERIC Educational Resources Information Center

Nowakowski, Alexandra C. H.; Sumerau, J. E.; Mathers, Lain A. B.

2016-01-01

This conversation explores emerging debates concerning teaching to and about marginalized populations often left out of "representative" data sets. Based on our experiences studying, teaching, and belonging to some of these unrepresented populations, we outline some strategies sociologists may use to transform the limitations of data…
Classroom Music Experiences of U.S. Elementary School Children: An Analysis of the Early Childhood Longitudinal Study of 1998-1999

ERIC Educational Resources Information Center

Miksza, Peter; Gault, Brent M.

2014-01-01

The primary purpose of this study was to describe the music experiences elementary school children in the United States receive in the academic classroom setting. The data were drawn from the Early Childhood Longitudinal Study of the Kindergarten Class of 1998-1999 (ECLS-K), a nationally representative study that followed kindergarteners through…
Object Manipulation Facilitates Kind-Based Object Individuation of Shape-Similar Objects

ERIC Educational Resources Information Center

Kingo, Osman S.; Krojgaard, Peter

2011-01-01

Five experiments investigated the importance of shape and object manipulation when 12-month-olds were given the task of individuating objects representing exemplars of kinds in an event-mapping design. In Experiments 1 and 2, results of the study from Xu, Carey, and Quint (2004, Experiment 4) were partially replicated, showing that infants were…
My Sister, Our Stories: Exploring the Lived Experience of School Leavers through Narrative and Poetics

ERIC Educational Resources Information Center

Davis, C. Amelia; Pepperell, Jennifer L.

2012-01-01

The purpose of this study was to explore the educational experiences of two adult female siblings who are both school leavers. Through the use of thematic narrative analysis, sibling narratives and poetic re-presentations, their stories were developed. These stories represent the participants' experiences of prior schooling and their current…
Hearing voices: re/presenting the findings of narrative research into patient experience as poems.

PubMed

Stenhouse, R

2014-06-01

The study aimed to understand the experience of being a patient on an acute psychiatric inpatient ward. A further aim was to open up spaces for the voices of participants to be heard. Contemporary government policy places patient experience at the centre of healthcare policy and service development. Despite this, those who occupy marginalized discourses struggle to be heard within the dominant discourse of health care. A qualitative approach was used, and narrative was conceptualized as representing experience. Sociolinguistic theories informed the development of the analytic framework treating meaning as contextual and arising from both content and structure of narratives. Concepts of representation, voice and authorship were problematized. Thirteen people who had been inpatients on an acute psychiatric inpatient ward participated. Narrative data were gathered using unstructured interviews. The data were analysed holistically using a method that attended to both the structure and content of the narrative. The product of these holistic narratives was the development of a poem representing each participant's experience. This paper focuses on the development of these poems as a method of decentring the authorial voice and opening up spaces for the voices of the participants to be heard. © 2013 John Wiley & Sons Ltd.
Public Health Interventions: School Nurse Practice Stories.

PubMed

Anderson, Linda J W; Schaffer, Marjorie A; Hiltz, Cynthia; O'Leary, Stacie A; Luehr, Ruth Ellen; Yoney, Erika L

2018-06-01

This study describes and analyzes school nurses' (SN) experiences with understanding and using public health interventions from the Public Health Intervention Wheel. The Wheel offers a model for naming interventions provided by SNs from a public health perspective. Research teams from academic and SN practice settings conducted six focus groups with school nurses from Minnesota. Participants were asked to share experiences through telling stories from their practice that represented a specific wedge of the Wheel. Researchers organized data by intervention; often stories represented more than one intervention. Stories represented all levels of practice. This study highlights important contributions of school nurses to promote the health of school populations through the use of Wheel interventions. The integration of Wheel interventions in the application of the Framework for 21st-Century School Nursing Practice™ provides SNs with a language to document and communicate their expert professional practice.
Calculating Preference Weights for the Labor and Delivery Index: A Discrete Choice Experiment on Women's Birth Experiences.

PubMed

Gärtner, Fania R; de Bekker-Grob, Esther W; Stiggelbout, Anne M; Rijnders, Marlies E; Freeman, Liv M; Middeldorp, Johanna M; Bloemenkamp, Kitty W M; de Miranda, Esteriek; van den Akker-van Marle, M Elske

2015-09-01

The aim of this study was to calculate preference weights for the Labor and Delivery Index (LADY-X) to make it suitable as a utility measure for perinatal care studies. In an online discrete choice experiment, 18 pairs of hypothetical scenarios were presented to respondents, from which they had to choose a preferred option. The scenarios describe the birth experience in terms of the seven LADY-X attributes. A D-efficient discrete choice experiment design with priors based on a small sample (N = 110) was applied. Two samples were gathered, women who had recently given birth and subjects from the general population. Both samples were analyzed separately using a panel mixed logit (MMNL) model. Using the panel mixed multinomial logit (MMNL) model results and accounting for preference heterogeneity, we calculated the average preference weights for LADY-X attribute levels. These were transformed to represent a utility score between 0 and 1, with 0 representing the worst and 1 representing the best birth experience. In total, 1097 women who had recently given birth and 367 subjects from the general population participated. Greater value was placed on differences between bottom and middle attribute levels than on differences between middle and top levels. The attributes that resulted in larger utility increases than the other attributes were "feeling of safety" in the sample of women who had recently given birth and "feeling of safety" and "availability of professionals" in the general population sample. By using the derived preference weights, LADY-X has the potential to be used as a utility measure for perinatal (cost-) effectiveness studies. Copyright © 2015 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.
Wind tunnel experiments to study chaparral crown fires

Treesearch

Jeanette Cobian-Iñiguez; AmirHessam Aminfar; Joey Chong; Gloria Burke; Albertina Zuniga; David R. Weise; Marko Princevac

2017-01-01

The present protocol presents a laboratory technique designed to study chaparral crown fire ignition and spread. Experiments were conducted in a low velocity fire wind tunnel where two distinct layers of fuel were constructed to represent surface and crown fuels in chaparral. Chamise, a common chaparral shrub, comprised the live crown layer. The dead fuel surface layer...
Wise Women: A Narrative Study of Former Living-Learning Community Participants' Experiences as STEM Majors

ERIC Educational Resources Information Center

Grays, Shaefny D.

2013-01-01

Over the past few decades, higher education has attempted to address the issue of underrepresentation of women in STEM undergraduate degree programs. Living-learning communities represent one strategy to help address low persistence for women in undergraduate STEM majors. The purpose of this study was to explore the experiences of undergraduate…
Daily Experiences among Mothers of Adolescents and Adults with Autism Spectrum Disorder

ERIC Educational Resources Information Center

Smith, Leann E.; Hong, Jinkuk; Seltzer, Marsha Mailick; Greenberg, Jan S.; Almeida, David M.; Bishop, Somer L.

2010-01-01

In the present study, 96 co-residing mothers of adolescents and adults with an autism spectrum disorder (ASD) participated in an 8-day diary study and reported on their daily experiences. In comparison with a nationally representative sample of mothers of children without disabilities, mothers of adolescent and adult children with ASD spent…
Transgender identity development as represented by a group of female-to-male transgendered adults.

PubMed

Morgan, Sarah W; Stevens, Patricia E

2008-06-01

This article represents work done in the discipline of nursing to raise awareness about the lives and experiences of transgendered persons, who receive little coverage in our nursing textbooks, professional journals, or student clinical experiences. The findings presented here are from a larger qualitative examination of the lives and experiences of a group of 11 transgendered adults that examined four broad areas: transgender identity recognition, acknowledgement, and development; bodily experiences; relationships with others; and health care experiences. The focus of this article is the relevant findings related to four participants in the study who identified as female-to-male (FTM), meaning they were born female-bodied, but identify as male. The highlight here is on the recognition, acknowledgement, and development of transgender identity. Our intention is to expose uninformed people to first-hand accounts by FTM transgendered persons about their life trajectories, particularly during childhood, adolescence, and the early adult years.
Experiences of User Involvement in Mental Health Settings: User Motivations and Benefits.

PubMed

Neech, Sophie G B; Scott, Helen; Priest, Helena M; Bradley, Eleanor J; Tweed, Alison E

2018-05-12

Despite guidance promoting user involvement, meaningful involvement continues to be debated within services. To effectively implement involvement, it is important to acknowledge why users devote time to such activities. This study explores user representatives' experiences of involvement, including motivations and personal benefits. Thirteen user representatives involved in activities such as staff training and interviews were recruited from a UK National Health Service mental health Trust during 2015. Themes within semi-structured interviews were developed using constructivist grounded theory analysis. Memo-writing, process and focused coding, and core categories supported development of the conceptual framework of being a user representative. Being a user representative was inextricably linked to wellness, yet staff governed opportunities. Making a difference to others and giving back were initial motivating factors. Experiences depended on feeling valued, and the theme of transition captured shifts in identity. User representatives reported increased confidence and wellbeing when supported by staff. However, involvement triggered mental health difficulties, and identified need for regular monitoring and reflection of involvement activities and practice. Services should consider coproduction, where users and staff agree together on involvement definitions. Dedicated involvement workers are crucial to supporting individual wellbeing and monitoring involvement. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
Wind Tunnel Data Fusion and Immersive Visualization: A Case Study

NASA Technical Reports Server (NTRS)

Severance, Kurt; Brewster, Paul; Lazos, Barry; Keefe, Daniel

2001-01-01

This case study describes the process of fusing the data from several wind tunnel experiments into a single coherent visualization. Each experiment was conducted independently and was designed to explore different flow features around airplane landing gear. In the past, it would have been very difficult to correlate results from the different experiments. However, with a single 3-D visualization representing the fusion of the three experiments, significant insight into the composite flowfield was observed that would have been extremely difficult to obtain by studying its component parts. The results are even more compelling when viewed in an immersive environment.

Evidence for kind representations in the absence of language: experiments with rhesus monkeys (Macaca mulatta).

PubMed

Phillips, Webb; Santos, Laurie R

2007-03-01

How do we come to recognize and represent different kinds of objects in the world? Some developmental psychologists have hypothesized that learning language plays a crucial role in this capacity. If this hypothesis were correct, then non-linguistic animals should lack the capacity to represent objects as kinds. Previous research with rhesus monkeys (Macaca mulatta) has shown that this species can successfully individuate different kinds of objects - monkeys who saw one kind of object hidden inside a box searched longer after finding a different kind of object. However, in these studies and the infant studies on which they were based, the objects to be individuated differed both in kind and in properties. Thus, subjects in these experiments may not be representing the kinds of objects per se, but instead only their immediate perceptual properties. Here, we show that rhesus monkeys successfully individuate different kinds of objects even when their perceptual properties are held constant. Although these data provide the best evidence to date that language is not necessary to represent kinds, we discuss our findings in terms of possible associative hypotheses as well.
Differences between General and Talented Students' Perceptions of Their Career and Technical Education Experiences Compared to Their Traditional High School Experiences

ERIC Educational Resources Information Center

Gentry, Marcia; Peters, Scott J.; Mann, Rebecca L.

2007-01-01

Career and technical education represents an important and understudied educational option for high school students. This qualitative study utilized data from one exemplary career and technical education (CTE) center to address the question of how talented and general education students' part-time CTE experiences differed from their traditional…
Past Experiences, Present Beliefs, Future Practices: Using Narratives to Re(present) Leadership Educator Identity

ERIC Educational Resources Information Center

Priest, Kerry L.; Seemiller, Corey

2018-01-01

In an effort to better understand leadership educator preparation, this qualitative study explores leadership educators' identity constructions, or (re)presentations of experiences, beliefs, and practices that contribute to one's professional identity. We used three narrative approaches (storytelling, symbolic interactionism, and anticipatory…
Living with the AIDS Virus: A Representative Case.

ERIC Educational Resources Information Center

Gordon, Jennifer; Shontz, Franklin C.

1990-01-01

Uses human sciences, multilevel, hermeneutic approach to study life experiences of 21-year-old male who had tested positive for Acquired Immunodeficiency Syndrome virus but who was asymptomatic. Demonstrates uses of systematic, personological procedure for examining these experiences and alerts practitioners to central psychological themes that…
A Developmental Study of the Criteria Used by Children to Justify their Affective Response to Arts Experiences.

ERIC Educational Resources Information Center

Murphy, Dennis T.

An empirical study of the way children talk about art experiences is described and the meaning of this talk in terms of the cognition it represents is investigated. The criteria serving as the basis for creation of content analysis categories are subject matter, sensory elements, formal properties, technical competence, expressive elements,…
Are Early Childhood Disparities Narrowing? The Changing Nature of Early Childhood and Its Link to Narrowing School-Entry Achievement Gaps

ERIC Educational Resources Information Center

Bassok, Daphna; Finch, Jenna; Lee, RaeHyuck; Reardon, Sean F.; Waldfogel, Jane

2016-01-01

To date, no studies have documented how much early childhood experiences have changed over time. In the current study, researchers use two large, nationally representative datasets of kindergarten entrants to document the following: (1) How have children's early childhood experiences changed between 1998 and 2010?; (2) To what extent have…
[Experience of knowledge translation in the ITSAL (immigration, work and health) research project with representatives of the target population].

PubMed

Ronda, Elena; López-Jacob, M José; Paredes-Carbonell, Joan J; López, Pilar; Boix, Pere; García, Ana M

2014-01-01

This article describes the experience of knowledge translation between researchers of the ITSAL (immigration, work and health) project and representatives of organizations working with immigrants to discuss the results obtained in the project and future research lines. A meeting was held, attended by three researchers and 18 representatives from 11 institutions. Following a presentation of the methodology and results of the project, the participants discussed the results presented and research areas of interest, thus confirming matches between the two sides and obtaining proposals of interest for the ITSAL project. We understand the process described as an approach to social validation of some of the main results of this project. This experience has allowed us to open a channel of communication with the target population of the study, in line with the necessary two-way interaction between researchers and users. Copyright © 2013 SESPAS. Published by Elsevier Espana. All rights reserved.
AN OVERVIEW OF THE OBJECTIVES AND DESIGN OF THE '99 ATLANTA SUPERSITE EXPERIMENT

EPA Science Inventory

During the Summer of 1999, a 4-week intensive field campaign was conducted at a site on Jefferson Street in Midtown Atlanta. The campaign, the 1999 Atlanta Supersites Experiment, was carried out under the direction of the Southern Oxidants Study and represented the first of U....
Schooling Experiences of Central California Indian People across Generations

ERIC Educational Resources Information Center

Williams, Tara

2012-01-01

This exploratory study took a post-colonialist lens to record, examine and document schooling experiences of California Indian people across several generations representing three Central Valley tribes: the Mono, the Tachi Yokuts of Santa Rosa Rancheria, and the Tule River Tribe. Past and present perceptions of Indian schooling were elicited…
Influences of Leadership Program Participation on Students' Capacities for Socially Responsible Leadership

ERIC Educational Resources Information Center

Dugan, John P.; Bohle, Christopher W.; Gebhardt, Matt; Hofert, Meghan; Wilk, Emily; Cooney, Matthew A.

2011-01-01

This study examined differential effects of various types of individual leadership experiences (e.g., retreats, academic minors) on college students' capacities for socially responsible leadership using data from 8,961 seniors representing 99 colleges and universities. Participation in individual leadership experiences explained a significant,…
Degrees of Co-Creation: An Exploratory Study of Perceptions of International Students' Role in Community Engagement Experiences

ERIC Educational Resources Information Center

Fleischman, David; Raciti, Maria; Lawley, Meredith

2015-01-01

Increased competition for the international student market has motivated universities to modernize their marketing strategies. Community engagement is an important component of students' international university experience and represents a potential point of competitive advantage. Developing marketing strategies around university-student-community…
Unheard and Unseen: How Housing Insecure African American Adolescents Experience the Education System

ERIC Educational Resources Information Center

Ellis, Addie Lucille; Geller, Kathy D.

2016-01-01

This narrative study is based on stories told by African American adolescents experiencing homelessness. It offers insights into their lived experiences and describes the challenges faced in negotiating the urban education system. African American youth are disproportionately represented in the adolescent homeless demographic. "Unheard and…
High School Band Students' Perspectives of Teacher Turnover

ERIC Educational Resources Information Center

Kloss, Thomas E.

2013-01-01

Teacher turnover remains an important issue in education. The least researched perspectives, though, are those of the students who experience teacher turnover. The purpose of this study was to examine how high school band students experience teacher turnover. A total of twelve students were interviewed, representing three schools that experienced…
Perceptions of Life on the Tenure Track.

ERIC Educational Resources Information Center

Verrier, David A.

1994-01-01

The report of a study of 18 junior faculty in varying stages of tenure eligibility at a research university presents the experiences of two, a man and a woman, felt to be representative of faculty experiences and perceptions. Issues addressed include peer relationships, competition, publishing, performance feedback, social expectations, personal…
School Experiences of an Adolescent with Medical Complexities Involving Incontinence

ERIC Educational Resources Information Center

Filce, Hollie Gabler; Bishop, John B.

2014-01-01

The educational implications of chronic illnesses which involve incontinence are not well represented in the literature. The experiences of an adolescent with multiple complex illnesses, including incontinence, were explored via an intrinsic case study. Data were gathered from the adolescent, her mother, and teachers through interviews, email…
Measuring Child-Staff Ratios in Child Care Centers: Balancing Effort and Representativeness

ERIC Educational Resources Information Center

Le, Vi-Nhuan; Perlman, Michal; Zellman, Gail L.; Hamilton, Laura S.

2006-01-01

Child-staff ratios are an important quality indicator. They are often collected by observing one randomly selected classroom several times during a 2-h period on a single day. However, it is unclear whether these measures represent the ratios that children actually experience during most of their time in care. This study compared ratio data…
An Effect of Spatial-Temporal Association of Response Codes: Understanding the Cognitive Representations of Time

ERIC Educational Resources Information Center

Vallesi, Antonino; Binns, Malcolm A.; Shallice, Tim

2008-01-01

The present study addresses the question of how such an abstract concept as time is represented by our cognitive system. Specifically, the aim was to assess whether temporal information is cognitively represented through left-to-right spatial coordinates, as already shown for other ordered sequences (e.g., numbers). In Experiment 1, the…
Child Abuse and Depression in Iranian Students: An Empirical Investigation.

ERIC Educational Resources Information Center

Mousavi, Mahnaz Nowroozi; Rogers, James R.

Child abuse and neglect (CA&N), as a social and psychological phenomenon, represents a major area of concern internationally. This study examined the prevalence and self-reported effects of CA&N in Iran through a descriptive investigation of high school students' experiences. A sample consisting of 2,240 high school students representing 5…
Conjoint representation of texture ensemble and location in the parahippocampal place area.

PubMed

Park, Jeongho; Park, Soojin

2017-04-01

Texture provides crucial information about the category or identity of a scene. Nonetheless, not much is known about how the texture information in a scene is represented in the brain. Previous studies have shown that the parahippocampal place area (PPA), a scene-selective part of visual cortex, responds to simple patches of texture ensemble. However, in natural scenes textures exist in spatial context within a scene. Here we tested two hypotheses that make different predictions on how textures within a scene context are represented in the PPA. The Texture-Only hypothesis suggests that the PPA represents texture ensemble (i.e., the kind of texture) as is, irrespective of its location in the scene. On the other hand, the Texture and Location hypothesis suggests that the PPA represents texture and its location within a scene (e.g., ceiling or wall) conjointly. We tested these two hypotheses across two experiments, using different but complementary methods. In experiment 1 , by using multivoxel pattern analysis (MVPA) and representational similarity analysis, we found that the representational similarity of the PPA activation patterns was significantly explained by the Texture-Only hypothesis but not by the Texture and Location hypothesis. In experiment 2 , using a repetition suppression paradigm, we found no repetition suppression for scenes that had the same texture ensemble but differed in location (supporting the Texture and Location hypothesis). On the basis of these results, we propose a framework that reconciles contrasting results from MVPA and repetition suppression and draw conclusions about how texture is represented in the PPA. NEW & NOTEWORTHY This study investigates how the parahippocampal place area (PPA) represents texture information within a scene context. We claim that texture is represented in the PPA at multiple levels: the texture ensemble information at the across-voxel level and the conjoint information of texture and its location at the within-voxel level. The study proposes a working hypothesis that reconciles contrasting results from multivoxel pattern analysis and repetition suppression, suggesting that the methods are complementary to each other but not necessarily interchangeable. Copyright © 2017 the American Physiological Society.
An Empirical Study of the Dominating Predictive Features of Spoken Language in a Representative Sample of School Pupils: A Multivariate Description and Analysis of Oral Language Development.

ERIC Educational Resources Information Center

Marascuilo, Leonard A.; Loban, Walter

To determine whether language behavior represents an early conditioned verbal response or whether it changes with age and experience was the purpose of this study which attempted to define unique isolates of language on the basis of actual language produced by young children. Tape recorded data were collected for 12 years from 211 children in…

Visual Semiotics & Uncertainty Visualization: An Empirical Study.

PubMed

MacEachren, A M; Roth, R E; O'Brien, J; Li, B; Swingley, D; Gahegan, M

2012-12-01

This paper presents two linked empirical studies focused on uncertainty visualization. The experiments are framed from two conceptual perspectives. First, a typology of uncertainty is used to delineate kinds of uncertainty matched with space, time, and attribute components of data. Second, concepts from visual semiotics are applied to characterize the kind of visual signification that is appropriate for representing those different categories of uncertainty. This framework guided the two experiments reported here. The first addresses representation intuitiveness, considering both visual variables and iconicity of representation. The second addresses relative performance of the most intuitive abstract and iconic representations of uncertainty on a map reading task. Combined results suggest initial guidelines for representing uncertainty and discussion focuses on practical applicability of results.
The Sport Experience of Athletes with Intellectual Disabilities: A National Survey of Special Olympics Athletes and Their Families

ERIC Educational Resources Information Center

Harada, Coreen M.; Siperstein, Gary N.

2009-01-01

The purpose of this study was to examine the sport experience for athletes with intellectual disabilities (ID) who participate in Special Olympics (SO). This study included a nationally representative sample of 1,307 families and 579 athletes in the U.S., focusing on sport involvement over the lifespan and motives for participating and for leaving…
Collaborative testing for key-term definitions under representative conditions: Efficiency costs and no learning benefits.

PubMed

Wissman, Kathryn T; Rawson, Katherine A

2018-01-01

Students are expected to learn key-term definitions across many different grade levels and academic disciplines. Thus, investigating ways to promote understanding of key-term definitions is of critical importance for applied purposes. A recent survey showed that learners report engaging in collaborative practice testing when learning key-term definitions, with outcomes also shedding light on the way in which learners report engaging in collaborative testing in real-world contexts (Wissman & Rawson, 2016, Memory, 24, 223-239). However, no research has directly explored the effectiveness of engaging in collaborative testing under representative conditions. Accordingly, the current research evaluates the costs (with respect to efficiency) and the benefits (with respect to learning) of collaborative testing for key-term definitions under representative conditions. In three experiments (ns = 94, 74, 95), learners individually studied key-term definitions and then completed retrieval practice, which occurred either individually or collaboratively (in dyads). Two days later, all learners completed a final individual test. Results from Experiments 1-2 showed a cost (with respect to efficiency) and no benefit (with respect to learning) of engaging in collaborative testing for key-term definitions. Experiment 3 evaluated a theoretical explanation for why collaborative benefits do not emerge under representative conditions. Collectively, outcomes indicate that collaborative testing versus individual testing is less effective and less efficient when learning key-term definitions under representative conditions.
Seeing ahead: experience and language in spatial perspective.

PubMed

Alloway, Tracy Packiam; Corley, Martin; Ramscar, Michael

2006-03-01

Spatial perspective can be directed by various reference frames, as well as by the direction of motion. In the present study, we explored how ambiguity in spatial tasks can be resolved. Participants were presented with virtual reality environments in order to stimulate a spatialreference frame based on motion. They interacted with an ego-moving spatial system in Experiment 1 and an object-moving spatial system in Experiment 2. While interacting with the virtual environment, the participants were presented with either a question representing a motion system different from that of the virtual environment or a nonspatial question relating to physical features of the virtual environment. They then performed the target task assign the label front in an ambiguous spatial task. The findings indicate that the disambiguation of spatial terms can be influenced by embodied experiences, as represented by the virtual environment, as well as by linguistic context.
Sleep disparity, race/ethnicity, and socioeconomic position

PubMed Central

Grandner, Michael A.; Williams, Natasha J.; Knutson, Kristen L.; Roberts, Dorothy; Jean-Louis, Girardin

2015-01-01

Sleep represents a set of biological functions necessary for the maintenance of life. Performing these functions, though, requires that an individual engage in behaviors, which are affected by social and environmental factors. Race/ethnicity and socioeconomic position represent categories of factors that likely play a role in the experience of sleep in the community. Previous studies have suggested that racial/ethnic minorities and the socioeconomically disadvantaged may be more likely to experience sleep patterns that are associated with adverse health outcomes. It is possible that disparities in sleep represent a pathway by which larger disparities in health emerge. This review (1) contextualizes the concept of race/ethnicity in biomedical research, (2) summarizes previous studies that describe patterns of sleep attainment across race/ethnicity groups, (3) discusses several pathways by which race/ethnicity may be associated with sleep, (4) introduces the potential role of socioeconomic position in the patterning of sleep, and (5) proposes future research directions to address this issue. PMID:26431755
A Perceptual Phonetic Similarity Space for Languages: Evidence from Five Native Language Listener Groups1

PubMed Central

Bradlow, Ann; Clopper, Cynthia; Smiljanic, Rajka; Walter, Mary Ann

2010-01-01

The goal of the present study was to devise a means of representing languages in a perceptual similarity space based on their overall phonetic similarity. In Experiment 1, native English listeners performed a free classification task in which they grouped 17 diverse languages based on their perceived phonetic similarity. A similarity matrix of the grouping patterns was then submitted to clustering and multidimensional scaling analyses. In Experiment 2, an independent group of native English listeners sorted the group of 17 languages in terms of their distance from English. Experiment 3 repeated Experiment 2 with four groups of non-native English listeners: Dutch, Mandarin, Turkish and Korean listeners. Taken together, the results of these three experiments represent a step towards establishing an approach to assessing the overall phonetic similarity of languages. This approach could potentially provide the basis for developing predictions regarding foreign-accented speech intelligibility for various listener groups, and regarding speech perception accuracy in the context of background noise in various languages. PMID:21179563
Early Experience and the Development of Cognitive Competence: Some Theoretical and Methodological Issues.

ERIC Educational Resources Information Center

Ulvund, Stein Erik

1982-01-01

Argues that in analyzing effects of early experience on development of cognitive competence, theoretical analyses as well as empirical investigations should be based on a transactional model of development. Shows optimal stimulation hypothesis, particularly the enhancement prediction, seems to represent a transactional approach to the study of…
The Experiences of Marine Student Veterans in Undergraduate Composition Courses: A Phenomenological Study

ERIC Educational Resources Information Center

Hinton, Corrine E.

2012-01-01

Student veterans represent one of the fastest growing undergraduate student populations in higher education, thanks largely to the expanded federal benefits provided by the Post-9/11 G.I. Bill. Understanding the transitional and academic experiences of student veterans is critical to creating military-friendly institutions. Existing research in…
The Role of the Academic Library in Promoting Student Engagement in Learning

ERIC Educational Resources Information Center

Kuh, George D.; Gonyea, Robert M.

2015-01-01

This study examines the nature and value of undergraduate students' experiences with the academic library. The data represent responses from more than 300,000 students between 1984 and 2002 to the College Student Experiences Questionnaire. Although library use did not appear to make independent contributions to desirable outcomes of college, such…
Taking a Stance through Visual Texts: Novice Teachers as Educational Agents

ERIC Educational Resources Information Center

Orland-Barak, Lily; Maskit, Ditza

2014-01-01

Drawing on qualitative methodologies that integrate verbal and non-verbal texts, this study investigated novice teachers' attributions of their experiences of internship, as conveyed through a visual text. Novices were invited to design a visual text that represented their experience during internship, as part of a national call entitled…
Young People's Satisfaction with Residential Care: Identifying Strengths and Weaknesses in Service Delivery

ERIC Educational Resources Information Center

Southwell, Jenni; Fraser, Elizabeth

2010-01-01

This paper presents findings from a landmark Australian study investigating the experiences and perspectives of young people in residential care. Data from a representative sample are analyzed to identify young people's satisfaction with various aspects of their residential care experience: their sense of safety, normality, support, comfort in…
"I Was Scared to Be the Stupid": Latinas in Residential Academies of Science and Math

ERIC Educational Resources Information Center

Sayman, Donna

2015-01-01

This study examines the experiences of Latinas in state residential academies of science, technology, engineering, and math (STEM). Goals of this project focused on understanding their experiences and identifying factors leading to the decision to enroll, along with issues contributing to retention. These schools represent powerful opportunities…
Glacier Lakes Ecosystem Experiment Site: an "Experimental" wilderness

Treesearch

Douglas G. Fox; Anna W. Schoettle; Frank A. Vertucci

1987-01-01

This site, selected to be representative of high-mountain wilderness ecosystems, is being used to study the effects of air pollution and atmospheric deposition In alpine and subalpine, terrestrial and aquatic biotic communities. The research program includes (a) short-term experiments designed to quantify the response of system components hypothesized to be most...
Is the Hawthorne Effect in Educational Experiments a Chimera?

ERIC Educational Resources Information Center

Bauernfeind, Robert H.; Olson, Carl J.

1973-01-01

Reports on an experimental study designed to investigate the relationship between two factors commonly regarded as components of the Hawthorne Effect on pupil performance and on intellectual task. These factors are (1) direct cue, or awareness of experimentation, as represented by an announcement that pupils were the subjects of an experiment; and…
A Riverboat Gambler's Utopian Experiment

ERIC Educational Resources Information Center

Bute, Monte

2017-01-01

In a seven-year study of new experimental colleges, Grant and Riesman (1978) report that within those schools "The utopian impulses are strong, representing a search for a more perfect union." One of the most radical of those experiments was Minnesota Metropolitan State College (MMSC). In addition to having no campus, the school had no…
Interactivity in Distance Education: The National Open University of Nigeria (NOUN) Experience

ERIC Educational Resources Information Center

Ambe-Uva, Terhemba Nom

2006-01-01

The paper represents a study of students' experience of interactivity in distance education programmes at the National Open University of Nigeria (NOUN). Through surveys and focus groups with students, facilitators, and administrative support staff, we found out that interactivity is a key determinant of student success rate. Majority of the…
First-Generation College Seniors: A Phenomenological Exploration of the Transitional Experience of the Final College Year

ERIC Educational Resources Information Center

Overton-Healy, Julia

2010-01-01

This study investigated the transitional experience of college seniors who are also first-generation status. This topic merits investigation because there is an increasing interest in various demographics of college students, and because college seniors represent an important retention demographic for American higher education, where the retention…
Representing Intentions in Self and Other: Studies of Autism and Typical Development

ERIC Educational Resources Information Center

Williams, David; Happe, Francesca

2010-01-01

Two experiments were conducted to explore the extent to which individuals with Autism Spectrum Disorder (ASD), as well as young typically developing (TD) children, are explicitly aware of their own and others' intentions. In Experiment 1, participants with ASD were significantly less likely than age- and ability-matched comparison participants to…
Priming effects under correct change detection and change blindness.

PubMed

Caudek, Corrado; Domini, Fulvio

2013-03-01

In three experiments, we investigated the priming effects induced by an image change on a successive animate/inanimate decision task. We studied both perceptual (Experiments 1 and 2) and conceptual (Experiment 3) priming effects, under correct change detection and change blindness (CB). Under correct change detection, we found larger positive priming effects on congruent trials for probes representing animate entities than for probes representing artifactual objects. Under CB, we found performance impairment relative to a "no-change" baseline condition. This inhibition effect induced by CB was modulated by the semantic congruency between the changed item and the probe in the case of probe images, but not for probe words. We discuss our results in the context of the literature on the negative priming effect. Copyright © 2012 Elsevier Inc. All rights reserved.
Reaction Time and Attention: Toward a New Standard in the Assessment of ADHD? A Pilot Study.

PubMed

De la Torre, Gabriel G; Barroso, Juan M; León-Carrión, José; Mestre, Jose M; Bozal, Rocío Guil

2015-12-01

This pilot study shows results of an experiment comparing reaction times (RTs) and attentional performance between an ADHD group of 30 children and 30 controls, both Spanish speaking. The experiment was carried out using the Seville computerized neuropsychological battery (SNB). This study had two goals: One was to test sensitivity of SNB for attention deficits in ADHD and the second was to detect differences in RTs between ADHD and controls. Possible explanations and implications of such differences are also discussed. SNB computerized system was used to assess RTs and accuracy, and alternate forms of continuous performance task were used. Results showed high sensitivity of some of the SNB tests, especially cancellation tests. RTs were significantly different between groups. SNB represents a helpful tool for detection of attention deficits, and RT indices represent the most significant variable in differentiation of both groups studied. © The Author(s) 2012.

STS-47 Payload Specialist Mohri conducts visual stability experiment in SLJ

NASA Image and Video Library

1992-09-20

STS047-204-006 (12 - 20 Sept 1992) --- Dr. Mamoru Mohri, payload specialist representing Japan's National Space Development Agency (NASDA), participates in an experiment designed to learn more about Space Adaptation Syndrome (SAS). The experiment is titled, "Comparative Measurement of Visual Stability in Earth and Cosmic Space." During the experiment, Dr. Mohri tracked a flickering light target while eye movements and neck muscle tension were measured. This 45-degree angle position was one of four studied during the eight-day Spacelab-J mission.
Study of a tracking and data acquisition system for the 1990's. Volume 1: User community characteristics

NASA Technical Reports Server (NTRS)

Mccreary, T.

1981-01-01

Projected 1990's experiments; navigation requirements and potentials; communications requirements associated with space experiments; alternative forecast options; and operational impacts on experiments are covered. A baseline of plans for the TDAS User Community, including a set of generic experiments developed to supplement existing planning for the 1990's time frame is generated. It includes extensive summaries of collected data, and a bibliography. The data are representative of inputs obtained from NASA planning sources through September 1981.
The woman's birth experience---the effect of interpersonal relationships and continuity of care.

PubMed

Dahlberg, Unn; Aune, Ingvild

2013-04-01

the aim of the present study was to gain a deeper understanding of how relational continuity in the childbearing process may influence the woman's birth experience. RESEARCH DESIGN/SETTING: a Q-methodological approach was chosen, as it allows the researcher to systematically assess subjectivity. 23 women were invited to sort a sample of 48 statements regarding their subjective view of birth experience after having participated in a pilot project in Norway, where six midwifery students provided continuity of care to 58 women throughout the childbearing process. The sorting patterns were subsequently factor-analysed, using the statistical software 'PQ' which reveals one strong and one weaker factor. The consensus statements and the defining statements for the two factors were later interpreted. both factors seemed to represent experiences of psychological trust and a feeling of team work along with the midwifery student. Both factors indicated the importance of quality in the relation. Factor one represented experiences of presence and emotional support in the relationship. It also represented a feeling of personal growth for the women. Factor two was defined by experiences of predictability in the relation and process, as well as the feeling of interdependency in the relation. According to quality in the relation, women defining factor two experienced that the content, not only the continuity in the relation, was important for the birth experience. relational continuity is a key concept in the context of a positive birth experience. Quality in the relation gives the woman a possibility to experience positivity during the childbearing process. Continuity in care and personal growth related to birth promote empowerment for both the woman and her partner. Relational continuity gives an opportunity for midwives to provide care in a more holistic manner. Copyright © 2012 Elsevier Ltd. All rights reserved.
The Task-Relevant Attribute Representation Can Mediate the Simon Effect

PubMed Central

Chen, Antao

2014-01-01

Researchers have previously suggested a working memory (WM) account of spatial codes, and based on this suggestion, the present study carries out three experiments to investigate how the task-relevant attribute representation (verbal or visual) in the typical Simon task affects the Simon effect. Experiment 1 compared the Simon effect between the between- and within-category color conditions, which required subjects to discriminate between red and blue stimuli (presumed to be represented by verbal WM codes because it was easy and fast to name the colors verbally) and to discriminate between two similar green stimuli (presumed to be represented by visual WM codes because it was hard and time-consuming to name the colors verbally), respectively. The results revealed a reliable Simon effect that only occurs in the between-category condition. Experiment 2 assessed the Simon effect by requiring subjects to discriminate between two different isosceles trapezoids (within-category shapes) and to discriminate isosceles trapezoid from rectangle (between-category shapes), and the results replicated and expanded the findings of Experiment 1. In Experiment 3, subjects were required to perform both tasks from Experiment 1. Wherein, in Experiment 3A, the between-category task preceded the within-category task; in Experiment 3B, the task order was opposite. The results showed the reliable Simon effect when subjects represented the task-relevant stimulus attributes by verbal WM encoding. In addition, the response times (RTs) distribution analysis for both the between- and within-category conditions of Experiments 3A and 3B showed decreased Simon effect with the RTs lengthened. Altogether, although the present results are consistent with the temporal coding account, we put forth that the Simon effect also depends on the verbal WM representation of task-relevant stimulus attribute. PMID:24618692
The Effects of Early Social-Emotional and Relationship Experience on the Development of Young Orphanage Children: The St. Petersburg-USA Orphanage Research Team

ERIC Educational Resources Information Center

Monographs of the Society for Research in Child Development, 2008

2008-01-01

This study represents a quasi-experimental test of the role of early social-emotional experience and adult-child relationships in the development of typically developing children and those with disabilities birth to 4 years of age living in orphanages in St. Petersburg, Russian Federation. The three orphanages in the current study were selected…
Are stimulus-response rules represented phonologically for task-set preparation and maintenance?

PubMed

van 't Wout, Félice; Lavric, Aureliu; Monsell, Stephen

2013-09-01

Accounts of task-set control generally assume that the current task's stimulus-response (S-R) rules must be elevated to a privileged state of activation. How are they represented in this state? In 3 task-cuing experiments, we tested the hypothesis that phonological working memory is used to represent S-R rules for task-set control by getting participants to switch between 2 sets of arbitrary S-R rules and manipulating the articulatory duration (Experiment 1) or phonological similarity (Experiments 2 and 3) of the names of the stimulus terms. The task cue specified which of 2 objects (Experiment 1) or consonants (Experiment 2) in a display to identify with a key press. In Experiment 3, participants switched between identifying an object/consonant and its color/visual texture. After practice, neither the duration nor the similarity of the stimulus terms had detectable effects on overall performance, task-switch cost, or its reduction with preparation. Only in the initial single-task training blocks was phonological similarity a significant handicap. Hence, beyond a very transient role, there is no evidence that (declarative) phonological working memory makes a functional contribution to representing S-R rules for task-set control, arguably because once learned, they are represented in nonlinguistic procedural working memory. PsycINFO Database Record (c) 2013 APA, all rights reserved.
Effects of solid barriers on dispersion of roadway emissions

EPA Science Inventory

Several studies have found that exposure to traffic-generated air pollution is associated with several adverse health effects. Field studies, laboratory experiments, and numerical simulations indicate that roadside barriers represent a practical method of mitigating the impact of...
Principled and Statistical Connections in Common Sense Conception

ERIC Educational Resources Information Center

Prasada, Sandeep; Dillingham, Elaine M.

2006-01-01

Nominal concepts represent things as tokens of types. We report six experiments that investigate the nature of the relations we represent between the type of thing something is (e.g. DOG) and its other properties. The experiments provide evidence that we represent principled connections between the type of thing something is (e.g. DOG) and some of…
Symbolic Estrangement: Evidence against a Strong Association between Numerical Symbols and the Quantities They Represent

ERIC Educational Resources Information Center

Lyons, Ian M.; Ansari, Daniel; Beilock, Sian L.

2012-01-01

Are numerals estranged from a sense of the actual quantities they represent? We demonstrate that, irrespective of numerical size or distance, direct comparison of the relative quantities represented by symbolic and nonsymbolic formats leads to performance markedly worse than when comparing 2 nonsymbolic quantities (Experiment 1). Experiment 2…
Effects of microbial processes on gas generation under expected WIPP repository conditions: Annual report through 1992

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

Francis, A.J.; Gillow, J.B.

1993-09-01

Microbial processes involved in gas generation from degradation of the organic constituents of transuranic waste under conditions expected at the Waste Isolation Pilot Plant (WIPP) repository are being investigated at Brookhaven National Laboratory. These laboratory studies are part of the Sandia National Laboratories -- WIPP Gas Generation Program. Gas generation due to microbial degradation of representative cellulosic waste was investigated in short-term (< 6 months) and long-term (> 6 months) experiments by incubating representative paper (filter paper, paper towels, and tissue) in WIPP brine under initially aerobic (air) and anaerobic (nitrogen) conditions. Samples from the WIPP surficial environment and undergroundmore » workings harbor gas-producing halophilic microorganisms, the activities of which were studied in short-term experiments. The microorganisms metabolized a variety of organic compounds including cellulose under aerobic, anaerobic, and denitrifying conditions. In long-term experiments, the effects of added nutrients (trace amounts of ammonium nitrate, phosphate, and yeast extract), no nutrients, and nutrients plus excess nitrate on gas production from cellulose degradation.« less
Tribology experiment. [journal bearings and liquid lubricants

NASA Technical Reports Server (NTRS)

Wall, W. A.

1981-01-01

A two-dimensional concept for Spacelab rack 7 was developed to study the interaction of liquid lubricants and surfaces under static and dynamic conditions in a low-gravity environment fluid wetting and spreading experiments of a journal bearing experiments, and means to accurately measure and record the low-gravity environment during experimentation are planned. The wetting and spreading process of selected commercial lubricants on representative surface are to the observes in a near-zero gravity environment.
Probabilistic Climate Scenario Information for Risk Assessment

NASA Astrophysics Data System (ADS)

Dairaku, K.; Ueno, G.; Takayabu, I.

2014-12-01

Climate information and services for Impacts, Adaptation and Vulnerability (IAV) Assessments are of great concern. In order to develop probabilistic regional climate information that represents the uncertainty in climate scenario experiments in Japan, we compared the physics ensemble experiments using the 60km global atmospheric model of the Meteorological Research Institute (MRI-AGCM) with multi-model ensemble experiments with global atmospheric-ocean coupled models (CMIP3) of SRES A1b scenario experiments. The MRI-AGCM shows relatively good skills particularly in tropics for temperature and geopotential height. Variability in surface air temperature of physical ensemble experiments with MRI-AGCM was within the range of one standard deviation of the CMIP3 model in the Asia region. On the other hand, the variability of precipitation was relatively well represented compared with the variation of the CMIP3 models. Models which show the similar reproducibility in the present climate shows different future climate change. We couldn't find clear relationships between present climate and future climate change in temperature and precipitation. We develop a new method to produce probabilistic information of climate change scenarios by weighting model ensemble experiments based on a regression model (Krishnamurti et al., Science, 1999). The method can be easily applicable to other regions and other physical quantities, and also to downscale to finer-scale dependent on availability of observation dataset. The prototype of probabilistic information in Japan represents the quantified structural uncertainties of multi-model ensemble experiments of climate change scenarios. Acknowledgments: This study was supported by the SOUSEI Program, funded by Ministry of Education, Culture, Sports, Science and Technology, Government of Japan.
Understanding the Lived Experiences of Low-Income Pell Grant Undergraduate Students at a Most Competitive College

ERIC Educational Resources Information Center

Postma, Michael H.

2017-01-01

Low-income Pell Grant recipients represent a small percentage of undergraduate students at America's elite colleges and universities. The purpose of this phenomenological case study was to understand the lived experiences of low-income Pell Grant students who attended a most competitive college. I used Tinto and Pusser's (2006) institutional…
Missed Opportunities: Examining the Literacy Experiences of African American Students Displaced by Hurricane Katrina

ERIC Educational Resources Information Center

Pollard, Tamica McClarty

2011-01-01

The purpose of this study was to examine how five African American middle school students, who were displaced by Hurricane Katrina represent their literacy experiences before, during, and after their displacement. Specifically, the two research questions were: (a) What are the stories that these middle school students tell about their lives,…
"Give Me a Break--English Is Not My First Language!": Experiences of Linguistically Diverse Student Teachers

ERIC Educational Resources Information Center

Eros, John

2016-01-01

Today's K-12 music educators interact regularly with students from culturally diverse communities and backgrounds. Although research exists on culturally diverse students, there is comparatively little research on music teachers who do, themselves, represent diverse cultures. The purpose of this study was to investigate the experiences of three…
Teachers' Perceptions and Undergraduate Students' Experience in E-Exam in Higher Institution in Nigeria

ERIC Educational Resources Information Center

Hamsatu, Pur; Yusufu, Gambo; Mohammed, Habib A.

2016-01-01

This study was conducted to explore teachers' perceptions, and students' experiences in e-Examination in University of Maiduguri. Questionnaires were distributed to 30 teachers and 50 students, and the 80 collated instruments were valid for data analysis, representing a response rate of 100%. The validity of the questionnaire was approved by some…
SubJournal for Personnel Responsible for Substitute Teaching. Volume 5, Number 1, Summer 2004

ERIC Educational Resources Information Center

Smith, Geoffrey G., Ed.; Tippetts, Zach, Ed.

2004-01-01

This issue of the "SubJournal" focuses on the experiences of substitute teachers as represented through individual experience and research. Included within are ten articles written by people from various fields of study and work ranging from students seeking degrees in education to a report from the House of Commons in the United…
Children's Outcomes and Program Quality in Head Start. FACES 2003 Research Brief

ERIC Educational Resources Information Center

Zill, Nicholas; Sorongon, Alberto; Kim, Kwang; Clark, Cheryl; Woolverton, Maria

2006-01-01

The Head Start Family and Child Experiences Survey (FACES) provides longitudinal data on a periodic basis on the characteristics, experiences, and outcomes of children and families served by Head Start as well as the characteristics of the Head Start programs that serve them. Each round of FACES is a study with a nationally representative sample…
Uncertainty Management and Sensemaking as Precursors to Transformative Learning in an International Immersion Service-Learning Experience

ERIC Educational Resources Information Center

Larson, Jan M.; Fay, Martha

2016-01-01

This study is based on an international immersion service-learning/research experience in a remote village in Moldova that provided faculty and students an opportunity to teach journalism and help local students and community representatives create their own online news outlet. Students' existing conceptions were challenged, they experienced…
Beginning Subbaccalaureate Students' Labor Market Experiences: Six Years Later in 2009. Web Tables. NCES 2012-273

ERIC Educational Resources Information Center

Ifill, Nicole; Radford, Alexandria Walton

2012-01-01

This set of Web Tables presents descriptive statistics on the spring 2009 labor market experiences of subbaccalaureate students who first entered postsecondary education in 2003-04. The Web Tables use data from the nationally representative 2004/09 Beginning Post-secondary Students Longitudinal Study (BPS:04/09), which followed a cohort of…

An Exploratory Study of Student Engagement at Transnational Education Initiatives: Proactive or Apathetic?

ERIC Educational Resources Information Center

Maxwell-Stuart, Rebecca; Huisman, Jeroen

2018-01-01

Purpose: Although there is increasing insight in student engagement (SE) in higher education, there is limited insight in how students experience SE in a transnational setting. The purpose of this paper is to explore SE perceptions and transnational experiences. A model, derived from the literature, representing four student identities (consumer,…
Diverging Experiences during Out-of-School Time: The Race Gap in Exposure to After-School Programs

ERIC Educational Resources Information Center

Hynes, Kathryn; Sanders, Felicia

2011-01-01

There is considerable interest in identifying ways to close the Black-White achievement gap. This study examines race differences in children's participation in after-school programs, an out-of-school time experience that may influence children's achievement. Using nationally representative data spanning 1995-2005, the authors find that African…
Are Women Over-Represented in Dead-End Jobs? A Swedish Study Using Empirically Derived Measures of Dead-End Jobs

ERIC Educational Resources Information Center

Bihagen, Erik; Ohls, Marita

2007-01-01

It has been claimed that women experience fewer career opportunities than men do mainly because they are over-represented in "Dead-end Jobs" (DEJs). Using Swedish panel data covering 1.1 million employees with the same employer in 1999 and 2003, measures of DEJ are empirically derived from analyses of wage mobility. The results indicate…
Managerial implications of medical sales representative perceptions of job duties, job qualifications, and other performance-related issues.

PubMed

Tengilimoğlu, Dilaver; Korkmaz, Sezer; Akinci, Fevzi; Parsons, Amy L

2004-01-01

This study examined the perceptions of medical sales representatives of job related duties, job qualifications needed, and motivating factors and tested for differences based on gender, age, years of experience and education using prior research as a base. This study also explored issues that may arise between sales people and physicians. The authors surveyed 132 medical sales representatives from pharmaceutical firms located in Ankara, Turkey. The authors' findings highlight the need in Turkey for developing in-service training programs for medical sales representatives, especially in the areas related to technical aspects of the product, effective marketing and personal selling strategies, and consumer relations. Training in these areas will help salespeople to better manage the problems typically encountered in physician-sales representative relations. While the study was conducted in Turkey, the results are similar to findings in prior research conducted in other countries and therefore may be of interest to all sales managers.
Dual Character Concepts in Social Cognition: Commitments and the Normative Dimension of Conceptual Representation.

PubMed

Del Pinal, Guillermo; Reuter, Kevin

2017-04-01

The concepts expressed by social role terms such as artist and scientist are unique in that they seem to allow two independent criteria for categorization, one of which is inherently normative (Knobe, Prasada, & Newman, 2013). This study presents and tests an account of the content and structure of the normative dimension of these "dual character concepts." Experiment 1 suggests that the normative dimension of a social role concept represents the commitment to fulfill the idealized basic function associated with the role. Background information can affect which basic function is associated with each social role. However, Experiment 2 indicates that the normative dimension always represents the relevant commitment as an end in itself. We argue that social role concepts represent the commitments to basic functions because that information is crucial to predict the future social roles and role-dependent behavior of others. Copyright © 2016 Cognitive Science Society, Inc.
Heterogeneity of the gut microbiome in mice: guidelines for optimizing experimental design.

PubMed

Laukens, Debby; Brinkman, Brigitta M; Raes, Jeroen; De Vos, Martine; Vandenabeele, Peter

2016-01-01

Targeted manipulation of the gut flora is increasingly being recognized as a means to improve human health. Yet, the temporal dynamics and intra- and interindividual heterogeneity of the microbiome represent experimental limitations, especially in human cross-sectional studies. Therefore, rodent models represent an invaluable tool to study the host-microbiota interface. Progress in technical and computational tools to investigate the composition and function of the microbiome has opened a new era of research and we gradually begin to understand the parameters that influence variation of host-associated microbial communities. To isolate true effects from confounding factors, it is essential to include such parameters in model intervention studies. Also, explicit journal instructions to include essential information on animal experiments are mandatory. The purpose of this review is to summarize the factors that influence microbiota composition in mice and to provide guidelines to improve the reproducibility of animal experiments. © FEMS 2015.
Heterogeneity of the gut microbiome in mice: guidelines for optimizing experimental design

PubMed Central

Laukens, Debby; Brinkman, Brigitta M.; Raes, Jeroen; De Vos, Martine; Vandenabeele, Peter

2015-01-01

Targeted manipulation of the gut flora is increasingly being recognized as a means to improve human health. Yet, the temporal dynamics and intra- and interindividual heterogeneity of the microbiome represent experimental limitations, especially in human cross-sectional studies. Therefore, rodent models represent an invaluable tool to study the host–microbiota interface. Progress in technical and computational tools to investigate the composition and function of the microbiome has opened a new era of research and we gradually begin to understand the parameters that influence variation of host-associated microbial communities. To isolate true effects from confounding factors, it is essential to include such parameters in model intervention studies. Also, explicit journal instructions to include essential information on animal experiments are mandatory. The purpose of this review is to summarize the factors that influence microbiota composition in mice and to provide guidelines to improve the reproducibility of animal experiments. PMID:26323480
Life science research objectives and representative experiments for the space station

NASA Technical Reports Server (NTRS)

Johnson, Catherine C. (Editor); Arno, Roger D. (Editor); Mains, Richard (Editor)

1989-01-01

A workshop was convened to develop hypothetical experiments to be used as a baseline for space station designer and equipment specifiers to ensure responsiveness to the users, the life science community. Sixty-five intra- and extramural scientists were asked to describe scientific rationales, science objectives, and give brief representative experiment descriptions compatible with expected space station accommodations, capabilities, and performance envelopes. Experiment descriptions include hypothesis, subject types, approach, equipment requirements, and space station support requirements. The 171 experiments are divided into 14 disciplines.
MIT-KSC space life sciences telescience testbed

NASA Technical Reports Server (NTRS)

1989-01-01

A Telescience Life Sciences Testbed is being developed. The first phase of this effort consisted of defining the experiments to be performed, investigating the various possible means of communication between KSC and MIT, and developing software and hardware support. The experiments chosen were two vestibular sled experiments: a study of ocular torsion produced by Y axis linear acceleration, based on the Spacelab D-1 072 Vestibular Experiment performed pre- and post-flight at KSC; and an optokinetic nystagmus (OKN)/linear acceleration interaction experiment. These two experiments were meant to simulate actual experiments that might be performed on the Space Station and to be representative of space life sciences experiments in general in their use of crew time and communications resources.
[Experiences of Individuals With Suicidal Ideation and Attempts].

PubMed

Rendón-Quintero, Eduardo; Rodríguez-Gómez, Rodolfo

2016-01-01

Suicide is a major public health problem. It covers about half of violent deaths and results in approximately one million deaths annually. Although completed suicide rates in Colombia are relatively low when compared with other countries, suicidal behavior, represented not only by completed suicide, is a significant mental health problem. To understand life experiences of a group of subjects related to the phenomenon of ideation and suicide attempt. A qualitative study with a psychodynamic approach. In-depth interviews were conducted in order to explore thought processes, emotions, motivations and experiences that underlie and accompany the suicide attempt. Five women and 3 men were interviewed. The average age was 29 years. The exploration of subjective experiences in the present study showed that loneliness and psychic pain were linked to hopelessness, pessimism and discouragement. Also, the illusion of death represents an invitation to suicide attempt. It is important to consider the subjective assessment that patients with suicidal risk make of their depression and stressful life situations. Additionally, the concepts of loneliness and psychic pain have a leading role in the interaction between discourse and the experiences of the participants interviewed. Copyright © 2015 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.
A focus group study of the impact of trauma exposure in the 9/11 terrorist attacks.

PubMed

North, Carol S; Barney, Carissa J; Pollio, David E

2015-04-01

Much of the mental health research that has emerged from the September 11 (9/11) attacks has been focused on posttraumatic stress disorder and its symptoms. To better understand the broader experience of individuals following a disaster, focus groups were conducted with individuals from affected companies both at Ground Zero and elsewhere in New York City. Twenty-one focus groups with a total of 140 participants were conducted in the second post-9/11 year. Areas of identified concern were coded into the following themes: Disaster Experience, Emotional Responses, Workplace Issues, Coping, and Issues of Public Concern. Discussions of focus groups included material represented in all five themes in companies both at Ground Zero and elsewhere. The emphasis and the content within these themes varied between the Ground Zero and other companies. Content suggesting symptoms of PTSD represented only a minority of the material, especially in the company groups not at Ground Zero. This study's findings revealed an array of psychosocial concerns following the 9/11 attacks among employees of companies in New York City that extended far beyond PTSD. This study's results provide further evidence that trauma exposure is central to individuals' post-disaster experience and focus, and to individuals' adjustment and experience after disaster.
What Type of Feedback Do Student Teachers Expect from Their School Mentors during Practicum Experience? The Case of Spanish EFL Student Teachers

ERIC Educational Resources Information Center

Martínez Agudo, Juan de Dios

2016-01-01

Mentorship represents a vital component in all teacher education programmes since mentors' feedback plays an essential role in shaping candidate teachers' professional identity. The quality of feedback provided by school mentors during the practicum experience constitutes the main focus of this study. This research paper aimed at investigating…
Effect of Implementing a Birth Plan on Womens' Childbirth Experiences and Maternal & Neonatal Outcomes

ERIC Educational Resources Information Center

Farahat, Amal Hussain; Mohamed, Hanan El Sayed; Elkader, Shadia Abd; El-Nemer, Amina

2015-01-01

Childbirth satisfaction represents a sense of feeling good about one's birth. It is thought to result from having a sense of control, having expectations met, feeling empowered, confident and supported. The aim of this study was to implement a birth plan and evaluate its effect on women's childbirth experiences and maternal, neonatal outcomes. A…
Parental Support and Knowledge and Adolescents' Sexual Health: Testing Two Mediational Models in a National Dutch Sample

ERIC Educational Resources Information Center

de Graaf, Hanneke; Vanwesenbeeck, Ine; Woertman, Liesbeth; Keijsers, Loes; Meijer, Suzanne; Meeus, Wim

2010-01-01

This study investigated age- and gender-specific associations between parental support and parental knowledge of the child's whereabouts, on the one hand, and sexual experience and sexual health (the ability to have safe and pleasurable sexual experiences) on the other hand. A representative Dutch sample of 1,263 males and 1,353 females (aged…
The Role of Supralexical Prosodic Units in Speech Production: Evidence from the Distribution of Speech Errors

ERIC Educational Resources Information Center

Choe, Wook Kyung

2013-01-01

The current dissertation represents one of the first systematic studies of the distribution of speech errors within supralexical prosodic units. Four experiments were conducted to gain insight into the specific role of these units in speech planning and production. The first experiment focused on errors in adult English. These were found to be…
Intimate Partner Violence Attitudes and Experience among Women and Men in Uganda

ERIC Educational Resources Information Center

Speizer, Ilene S.

2010-01-01

This study examines intimate partner violence (IPV) attitudes and experience among women and men in Uganda to inform IPV-prevention programs in the region. Nationally representative population-based data from women aged 15 to 49 and men aged 15 to 54 were collected between May and October 2006 as part of the Uganda Demographic and Health Survey.…
Development of flight experiment task requirements. Volume 2: Technical Report. Part 2: Appendix H: Tasks-skills data series

NASA Technical Reports Server (NTRS)

Hatterick, G. R.

1972-01-01

The data sheets presented contain the results of the task analysis portion of the study to identify skill requirements of space shuttle crew personnel. A comprehensive data base is provided of crew functions, operating environments, task dependencies, and task-skills applicable to a representative cross section of earth orbital research experiments.
Effect of climate change on sowing and harvest dates of spring barley and maize in Poland

NASA Astrophysics Data System (ADS)

Marcinkowski, Paweł; Piniewski, Mikołaj

2018-04-01

Climate change and projected temperature increase is recognised to have significant impact on agricultural production and crop phenology. This study evaluated the climate change impact on sowing and harvest dates of spring barley and maize in the boundaries of two largest catchments in Poland - the Vistula and the Odra. For this purpose, an agro-hydrological Soil and Water Assessment Tool has been used, driven by climate forcing data provided within the Coordinated Downscaling Experiment - European Domain experiment projected to the year 2100 under two representative concentration pathways: 4.5 and 8.5. The projected warmer climate significantly affected the potential scheduling of agricultural practices, accelerating the occurrence of sowing and harvest dates. The rate of acceleration was dependent on the time horizon and representative concentration pathways scenario. In general, the rate of sowing/harvest advance was accelerating in time and, also from representative concentration pathways 4.5 to 8.5, reaching 23 days for spring barley and 30 days for maize (ensemble mean for the far future under representative concentration pathways 8.5).
Spatial Representation by Blind and Sighted Children

ERIC Educational Resources Information Center

Millar, Susanna

1976-01-01

Problem studied: How children represent haptic spatial information in memory. Question aimed at: Whether, and if so in what ways, children's spatial representations differ according to the main modality of prior experience. (JH)
Determination of Global Stability of the Slosh Motion in a Spacecraft via Num Erical Experiment

NASA Astrophysics Data System (ADS)

Kang, Ja-Young

2003-12-01

The global stability of the attitude motion of a spin-stabilized space vehicle is investigated by performing numerical experiment. In the previous study, a stationary solution and a particular resonant condition for a given model were found by using analytical method but failed to represent the system stability over parameter values near and off the stationary points. Accordingly, as an extension of the previous work, this study performs numerical experiment to investigate the stability of the system across the parameter space and determines stable and unstable regions of the design parameters of the system.

Medical genetics, public understanding and patient experiences: An exploratory qualitative study of recently pregnant women

NASA Astrophysics Data System (ADS)

Garman, Jamie L.

The purpose of the study was to document how individuals' experiences and understanding of genetics concepts affects their medical experiences. Recently pregnant women were interviewed because they represent a population that needs to comprehend biological and genetic information to understand their health. Three women were designated as science experts (SE) defined as having extensive university level science education and three women were designated as science non-experts (SNE). In general, SEs described a more positive pregnancy experience. Both SEs and SNEs demonstrated a basic understanding of genetic concepts but varied in the application of concepts to personal medical issues. Participants' views and experiences of pre and postnatal tests were linked to their understanding of nature of science components such as recognition that tests have limitations. Results from this study indicate an incomplete understanding of the nature of science among participants may have led to unsatisfactory medical experiences.
Gas-Grain Simulation Facility: Fundamental studies of particle formation and interactions. Volume 2: Abstracts, candidate experiments and feasibility study

NASA Technical Reports Server (NTRS)

Fogleman, Guy (Editor); Huntington, Judith L. (Editor); Schwartz, Deborah E. (Editor); Fonda, Mark L. (Editor)

1989-01-01

An overview of the Gas-Grain Simulation Facility (GGSF) project and its current status is provided. The proceedings of the Gas-Grain Simulation Facility Experiments Workshop are recorded. The goal of the workshop was to define experiments for the GGSF--a small particle microgravity research facility. The workshop addressed the opportunity for performing, in Earth orbit, a wide variety of experiments that involve single small particles (grains) or clouds of particles. Twenty experiments from the fields of exobiology, planetary science, astrophysics, atmospheric science, biology, physics, and chemistry were described at the workshop and are outlined in Volume 2. Each experiment description included specific scientific objectives, an outline of the experimental procedure, and the anticipated GGSF performance requirements. Since these experiments represent the types of studies that will ultimately be proposed for the facility, they will be used to define the general science requirements of the GGSF. Also included in the second volume is a physics feasibility study and abstracts of example Gas-Grain Simulation Facility experiments and related experiments in progress.
The lasting legacy of childhood adversity for disease risk in later life.

PubMed

McCrory, Cathal; Dooley, Cara; Layte, Richard; Kenny, Rose Anne

2015-07-01

There has been an increased interest in the role of the childhood social environment in the etiology of adult diseases in recent years. The present study examines whether the experience of adversity during childhood increases risk for disease in later life independent of later life socioeconomic, behavioral, and psychosocial factors. The study involved a nationally representative sample of 6,912 persons aged 50 years and older who were participating in the first wave of the Irish Longitudinal Study on Ageing. Childhood adversity was indexed using a 4-item measure that captured challenging and potentially noxious childhood environmental exposures including, socioeconomic disadvantage, substance abuse among parents, physical abuse, and sexual abuse. A doctor diagnosis of disease across 9 chronic disease types represented the primary outcome variables. The experience of adversity during childhood was associated with increased risk of disease in midlife and older ages across a large number of chronic disease types including cardiovascular disease, lung disease, and emotional, nervous, or psychiatric disorders. Analysis of the dose-response pattern revealed positively graded associations between the number of adverse events experienced during childhood and the occurrence of chronic disease in later life. Cox proportional hazard models revealed that the experience of adversity during childhood was associated with earlier age of onset for any physical disease type or emotional, nervous, or psychiatric disorders. These findings indicate that childhood may represent a sensitive or critical period in the development of disease and reinforces the necessity of adopting a life-course approach to the study of chronic diseases. (c) 2015 APA, all rights reserved.
Neuroscience and Global Learning

PubMed Central

Ruscio, Michael G.; Korey, Chris; Birck, Anette

2015-01-01

Traditional study abroad experiences take a variety of forms with most incorporating extensive cultural emersion and a focus on global learning skills. Here we ask the question: Can this type of experience co-exist with a quality scientific experience and continued progression through a typically rigorous undergraduate neuroscience curriculum? What are the potential costs and benefits of this approach? How do we increase student awareness of study abroad opportunities and inspire them to participate? We outline programs that have done this with some success and point out ways to cultivate this approach for future programs. These programs represent a variety of approaches in both their duration and role in a given curriculum. We discuss a one-week first year seminar program in Berlin, a summer study abroad course in Munich and Berlin, semester experiences and other options offered through the Danish Institute for Study Abroad in Copenhagen. Each of these experiences offers opportunities for interfacing global learning with neuroscience. PMID:26240528
Second-order contrast based on the expectation of effort and reinforcement.

PubMed

Clement, Tricia S; Zentall, Thomas R

2002-01-01

Pigeons prefer signals for reinforcement that require greater effort (or time) to obtain over those that require less effort to obtain (T. S. Clement, J. Feltus, D. H. Kaiser, & T. R. Zentall, 2000). Preference was attributed to contrast (or to the relatively greater improvement in conditions) produced by the appearance of the signal when it was preceded by greater effort. In Experiment 1, the authors of the present study demonstrated that the expectation of greater effort was sufficient to produce such a preference (a second-order contrast effect). In Experiments 2 and 3, low versus high probability of reinforcement was substituted for high versus low effort, respectively, with similar results. In Experiment 3, the authors found that the stimulus preference could be attributed to positive contrast (when the discriminative stimuli represented an improvement in the probability of reinforcement) and perhaps also negative contrast (when the discriminative stimuli represented reduction in the probability of reinforcement).
Subjective Experiences of Clients in a Voluntary Money Management Program.

PubMed

Serowik, Kristin L; Bellamy, Chyrell D; Rowe, Michael; Rosen, Marc I

2013-01-01

A large proportion of people diagnosed with mental illnesses have difficulty managing their money, and therefore many psychiatric treatments involve providing money management assistance. However, little is known about the subjective experience of having a money manager, and extant literature is restricted to people forced to work with a representative payee or conservator. In this study, fifteen people were interviewed about their experience receiving a voluntary money management intervention designed to minimize substance use. Clients emphasized the importance of trusting the money manager, financial mindfulness (an enhanced awareness of the financial transactions in clients' day-to-day lives), agency over their own affairs, and addiction. In contrast to evaluations of people assigned representative payees and/or conservators, there was little mention of feeling coerced. These findings suggest that money management programs can address client concerns by building trust, relating budgeting to clients' day-to-day lives, and encouraging clients' control over their own affairs.
Subjective Experiences of Clients in a Voluntary Money Management Program

PubMed Central

Serowik, Kristin L.; Bellamy, Chyrell D.; Rowe, Michael; Rosen, Marc I.

2013-01-01

A large proportion of people diagnosed with mental illnesses have difficulty managing their money, and therefore many psychiatric treatments involve providing money management assistance. However, little is known about the subjective experience of having a money manager, and extant literature is restricted to people forced to work with a representative payee or conservator. In this study, fifteen people were interviewed about their experience receiving a voluntary money management intervention designed to minimize substance use. Clients emphasized the importance of trusting the money manager, financial mindfulness (an enhanced awareness of the financial transactions in clients’ day-to-day lives), agency over their own affairs, and addiction. In contrast to evaluations of people assigned representative payees and/or conservators, there was little mention of feeling coerced. These findings suggest that money management programs can address client concerns by building trust, relating budgeting to clients’ day-to-day lives, and encouraging clients’ control over their own affairs. PMID:24605071
A Novel Integrating Virtual Reality Approach for the Assessment of the Attachment Behavioral System.

PubMed

Chicchi Giglioli, Irene Alice; Pravettoni, Gabriella; Sutil Martín, Dolores Lucia; Parra, Elena; Raya, Mariano A

2017-01-01

Virtual reality (VR) technology represents a novel and powerful tool for behavioral research in psychological assessment. VR provides simulated experiences able to create the sensation of undergoing real situations. Users become active participants in the virtual environment seeing, hearing, feeling, and actuating as if they were in the real world. Currently, the most psychological VR applications concern the treatment of various mental disorders but not the assessment, that it is mainly based on paper and pencil tests. The observation of behaviors is costly, labor-intensive, and it is hard to create social situations in laboratory settings, even if the observation of actual behaviors could be particularly informative. In this framework, social stressful experiences can activate various behaviors of attachment for a significant person that can help to control and soothe them to promote individual's well-being. Social support seeking, physical proximity, and positive and negative behaviors represent the main attachment behaviors that people can carry out during experiences of distress. We proposed VR as a novel integrating approach to measure real attachment behaviors. The first studies on attachment behavioral system by VR showed the potentiality of this approach. To improve the assessment during the VR experience, we proposed virtual stealth assessment (VSA) as a new method. VSA could represent a valid and novel technique to measure various psychological attributes in real-time during the virtual experience. The possible use of this method in psychology could be to generate a more complete, exhaustive, and accurate individual's psychological evaluation.
Wives' Attitudes toward Gender Roles and Their Experience of Intimate Partner Violence by Husbands in Central Province, Sri Lanka

ERIC Educational Resources Information Center

Jayatilleke, Achini; Poudel, Krishna C.; Sakisaka, Kayako; Yasuoka, Junko; Jayatilleke, Achala Upendra; Jimba, Masamine

2011-01-01

The authors conducted a community based, cross-sectional study to describe the prevalence of intimate partner violence (IPV) by husbands and the association between wives' attitudes toward gender roles and their experience of IPV in Central Province, Sri Lanka. This article included a representative sample of 624 wives between 15 and 49 years of…
Risk Factors and Consequences of Unwanted Sex among University Students: Hooked up, Alcohol, and Stress Response

ERIC Educational Resources Information Center

Flack, William F., Jr.; Daubman, Kimberly A.; Caron, Marcia L.; Asadorian, Jenica A.; D'Aureli, Nicole R.; Gigliotti, Shannon N.; Hall, Anna T.; Kiser, Sarah; Stine, Erin R.

2007-01-01

This is the first study of unwanted sexual experiences in the collegiate "hooking-up" culture. In a representative sample of 178 students at a small liberal arts university. Twenty-three percent of women and 7% of men surveyed reported one or more experiences of unwanted sexual intercourse. Seventy-eight percent of unwanted vaginal, anal, and oral…
Framing expectations in early HIV cure research.

PubMed

Dubé, Karine; Henderson, Gail E; Margolis, David M

2014-10-01

Language used to describe clinical research represents a powerful opportunity to educate volunteers. In the case of HIV cure research there is an emerging need to manage expectations by using the term 'experiment'. Cure experiments are proof-of-concept studies designed to evaluate novel paradigms to reduce persistent HIV-1 reservoirs, without any expectation of medical benefit. Copyright © 2014 Elsevier Ltd. All rights reserved.
Plotting Confucian and Disability Rights Paradigms on the Advocacy-Activism Continuum: Experiences of Chinese Parents of Children with Dyslexia in Hong Kong

ERIC Educational Resources Information Center

Poon-McBrayer, Kim Fong; McBrayer, Philip Allen

2014-01-01

This study represents an initial effort to understand the advocacy journey of Chinese parents of children with dyslexia in Hong Kong. Qualitative methods involving individual and group interviews were used to solicit detailed recount and perceptions of the experiences of 25 parents. Findings revealed a largely sequenced three-stage journey of…
College and Other Stepping Stones: A Study of Learning Experiences That Contribute to Effective Performance in Early and Long-Run Jobs.

ERIC Educational Resources Information Center

Bisconti, Ann Stouffer; Kessler, Jean G.

Understanding how and why college education contributes to effective job performance may be helpful in preparing students for the world of work. Personal accounts of college graduates place college education in the context of other learning experiences that occurred before and after the college years. Seventy companies representing a variety of…
Solar array module plasma interactions experiment (SAMPIE) - Science and technology objectives

NASA Technical Reports Server (NTRS)

Hillard, G. B.; Ferguson, Dale C.

1993-01-01

The solar array module plasma interactions experiment (SAMPIE) is an approved NASA flight experiment manifested for Shuttle deployment in early 1994. The SAMPIE experiment is designed to investigate the interaction of high voltage space power systems with ionospheric plasma. To study the behavior of solar cells, a number of solar cell coupons (representing design technologies of current interest) will be biased to high voltages to measure both arcing and current collection. Various theories of arc suppression will be tested by including several specially modified cell coupons. Finally, SAMPIE will include experiments to study the basic nature of arcing and current collection. This paper describes the rationale for a space flight experiment, the measurements to be made, and the significance of the expected results. A future paper will present a detailed discussion of the engineering design.
Health Status and Experience of the Migrant Workers Returned from Spain to Colombia: A Qualitative Approach.

PubMed

Zapata-Villa, Carolina; Agudelo-Suárez, Andrés A; Cardona-Arango, Doris; Ronda-Pérez, Elena

2017-12-14

This study aims to understand the migratory experience and the employment, work and health conditions of the returned migrants from Spain to Colombia. A qualitative study was conducted by means of 23 semi-structured interviews with Colombian returned migrant workers. Qualitative narrative content analysis was performed using Atlas.Ti software. Main findings are represented by nine categories emerged from the participants' discourses: (1) impact of the economic crisis on work and employment conditions in Spain, (2) economic crisis and return, (3) characteristics of returnees, (4) perception of the returnees about Colombia, (5) the role of social support networks, (6) employment and working conditions in Colombia, (7) health and wellbeing, (8) future plans and expectations, (9) the experience of being immigrant. Adjustment difficulties in participants are evidenced by the return migration process and the conditions of the social, political and economic system in Colombia. Return migration represents the reconfiguration of personal and working lives of this population. This situation requires the development of global policies and strategies in public health to facilitate the adaptation of these people.
Promoting community participation in priority setting in district health systems: experiences from Mbarali district, Tanzania

PubMed Central

Kamuzora, Peter; Maluka, Stephen; Ndawi, Benedict; Byskov, Jens; Hurtig, Anna-Karin

2013-01-01

Background Community participation in priority setting in health systems has gained importance all over the world, particularly in resource-poor settings where governments have often failed to provide adequate public-sector services for their citizens. Incorporation of public views into priority setting is perceived as a means to restore trust, improve accountability, and secure cost-effective priorities within healthcare. However, few studies have reported empirical experiences of involving communities in priority setting in developing countries. The aim of this article is to provide the experience of implementing community participation and the challenges of promoting it in the context of resource-poor settings, weak organizations, and fragile democratic institutions. Design Key informant interviews were conducted with the Council Health Management Team (CHMT), community representatives, namely women, youth, elderly, disabled, and people living with HIV/AIDS, and other stakeholders who participated in the preparation of the district annual budget and health plans. Additionally, minutes from the Action Research Team and planning and priority-setting meeting reports were analyzed. Results A number of benefits were reported: better identification of community needs and priorities, increased knowledge of the community representatives about priority setting, increased transparency and accountability, promoted trust among health systems and communities, and perceived improved quality and accessibility of health services. However, lack of funds to support the work of the selected community representatives, limited time for deliberations, short notice for the meetings, and lack of feedback on the approved priorities constrained the performance of the community representatives. Furthermore, the findings show the importance of external facilitation and support in enabling health professionals and community representatives to arrive at effective working arrangement. Conclusion Community participation in priority setting in developing countries, characterized by weak democratic institutions and low public awareness, requires effective mobilization of both communities and health systems. In addition, this study confirms that community participation is an important element in strengthening health systems. PMID:24280341
Programs and Practices that Retain Students from the First to Second Year: Results from a National Study

ERIC Educational Resources Information Center

DeAngelo, Linda

2014-01-01

In this chapter findings from a nationally representative longitudinal study offer insights into how the experiences students have during their first college year affect their intention to be retained at their initial college for the second year.
Use of Tablet Computers to Promote Physical Therapy Students' Engagement in Knowledge Translation During Clinical Experiences.

PubMed

Tilson, Julie K; Loeb, Kathryn; Barbosa, Sabrina; Jiang, Fei; Lee, Karin T

2016-04-01

Physical therapists strive to integrate research into daily practice. The tablet computer is a potentially transformational tool for accessing information within the clinical practice environment. The purpose of this study was to measure and describe patterns of tablet computer use among physical therapy students during clinical rotation experiences. Doctor of physical therapy students (n = 13 users) tracked their use of tablet computers (iPad), loaded with commercially available apps, during 16 clinical experiences (6-16 weeks in duration). The tablets were used on 70% of 691 clinic days, averaging 1.3 uses per day. Information seeking represented 48% of uses; 33% of those were foreground searches for research articles and syntheses and 66% were for background medical information. Other common uses included patient education (19%), medical record documentation (13%), and professional communication (9%). The most frequently used app was Safari, the preloaded web browser (representing 281 [36.5%] incidents of use). Users accessed 56 total apps to support clinical practice. Physical therapy students successfully integrated use of a tablet computer into their clinical experiences including regular activities of information seeking. Our findings suggest that the tablet computer represents a potentially transformational tool for promoting knowledge translation in the clinical practice environment.Video Abstract available for more insights from the authors (see Supplemental Digital Content 1, http://links.lww.com/JNPT/A127).
Skylab

NASA Image and Video Library

1972-08-21

Todd Meister(center), high school student of the Bronx High School of Science, discusses his experiment “An Invitro Study of Selected Isolated Immune Phenomena” with his advisor, Dr. Robert Allen (right) and Henry Floyd, both of the Marshall Space Flight Center (MSFC). His experiment was aimed at discovering whether or not the absence of gravity affects the representative life processes. Meister was one of the 25 winners of a contest in which some 3,500 high school students proposed experiments for the following year’s Skylab mission. Of the 25 students, 6 did not see their experiments conducted on Skylab because the experiments were not compatible with Skylab hardware and timelines. Of the 19 remaining, 11 experiments required the manufacture of equipment.
Cooperating when "you" and "I" are treated fairly: the moderating role of leader prototypicality.

PubMed

De Cremer, David; van Dijke, Marius; Mayer, David M

2010-11-01

We developed a model predicting that leaders are most effective in stimulating follower cooperation when they consistently treat all group members in a fair manner and are prototypical (i.e., representative of the group's values and norms). In support of this idea, we consistently found that group members cooperated most when prototypical leaders treated themselves as well as their coworkers fairly across a laboratory experiment and 3 cross-sectional field studies. These findings highlight the important role of others' fairness experiences and perceptions in influencing one's own reactions and also the role of leaders as representing the group's values and norms. We discuss implications for fairness theory and the leader prototypicality literature. (c) 2010 APA, all rights reserved.

Studying to Play, Playing to Study: Nine College Student-Athletes' Motivational Sense of Self

ERIC Educational Resources Information Center

Woodruff, Althea L.; Schallert, Diane L.

2008-01-01

This study represents a grounded theory investigation of how motivation and self-perceptions influence students' emotions, cognitions, and behaviors by focusing on student-athletes, individuals who may experience conflicting sets of motivation and self issues. From observing and interviewing nine student-athletes at a Research 1 university, we…
Where Are All the Males?: A Mixed Methods Inquiry into Male Study Abroad Participation

ERIC Educational Resources Information Center

Lucas, James M.

2009-01-01

Study abroad represents a powerful tool for internationalizing students' higher education experience; however, current participation numbers indicate that male students go on study abroad programs at half the rate of female students. This rate reflects broader engagement trends for male college students, who have fallen behind female participation…
Medicare Contracting Risk/Medicare Risk Contracting: A Life-Cycle View from Twelve Markets

PubMed Central

Hurley, Robert E; Grossman, Joy M; Strunk, Bradley C

2003-01-01

Objective To examine the evolution of the Medicare HMO program from 1996 to 2001 in 12 nationally representative urban markets by exploring how the separate and confluent influences of government policy initiatives and health plans' strategic aims and operational experience affected the availability of HMOs to Medicare beneficiaries. Data Source Qualitative data gathered from 12 nationally representative urban communities with more than 200,000 residents each, in tandem with quantitative information from the Centers for Medicare and Medicaid Services and other sources. Study Design Detailed interview protocols, developed as part of the multiyear, multimethod Community Tracking Study of the Center for Studying Health System Change, were used to conduct three rounds of interviews (1996, 1998, and 2000–2001) with health plans and providers in 12 nationally representative urban communities. A special focus during the third round of interviews was on gathering information related to Medicare HMOs' experience in the previous four years. This information was used to build on previous research to develop a longitudinal perspective on health plans' experience in Medicare's HMO program. Principal Findings From 1996 to 2001, the activities and expectations of health plans in local markets underwent a rapid and dramatic transition from enthusiasm for the Medicare HMO product, to abrupt reconsideration of interest corresponding to changes in the Balanced Budget Act of 1997, on to significant retrenchment and disillusionment. Policy developments were important in their own right, but they also interacted with shifts in the strategic aims and operational experiences of health plans that reflect responses to insurance underwriting cycle pressures and pushback from providers. Conclusion The Medicare HMO program went through a substantial reversal of fortune during the study period, raising doubts about whether its downward course can be altered. Market-level analysis reveals that virtually all momentum for the program has been lost and that enrollment is shrinking back to the levels and locations found in the mid-1990s. PMID:12650373
High occupancy vehicle project case studies : historical trends and project experiences

DOT National Transportation Integrated Search

1992-08-01

High-occupancy vehicle (HOV) facilities represent one approach being used in many metropolitan areas today to respond to increasing traffic congestion, declining mobility levels, air quality and environmental concerns, and limited resources. HOV faci...
The Dark Side of Top Level Sport: An Autobiographic Study of Depressive Experiences in Elite Sport Performers

PubMed Central

Newman, Hannah J. H.; Howells, Karen L.; Fletcher, David

2016-01-01

The general and sport psychology research converge to point to a complex relationship between depressive experiences and human performance. The purpose of this study was to explore the depressive experiences of top level athletes and the relationship of such experiences with sport performance. Twelve autobiographies of elite athletes representing eight sports were analyzed. The autobiographical analysis was informed by narrative tradition, using three types of narrative analysis: categorical content, categorical form, and holistic content. The analysis revealed a temporal aspect to the depressive experiences that the athletes reported. Initially, sport represented a form of escape from the depressive symptoms which had been exacerbated by both external stressors (e.g., experiencing bereavement) and internal stressors (e.g., low self-esteem). However, in time, the athletes typically reached a stage when the demands of their sport shifted from being facilitative to being debilitative in nature with an intensification of their depressive symptoms. This was accompanied by deliberations about continuing their engagement in sport and an acceptance that they could no longer escape from their symptoms, with or without sport. The findings extend the extant literature by suggesting a reciprocal relationship between depressive experiences and sport performance, and they support the general psychology literature relating to the negative impact of depression on performance. The applied implications of these findings are discussed emphasizing the importance of early identification of depressive symptoms and the adoption of a proactive approach in the prevention and management of symptoms. PMID:27375544
The benefits of discussing suicide with Alaska native college students: qualitative analysis of in-depth interviews.

PubMed

DeCou, Christopher R; Skewes, Monica C; López, Ellen D S; Skanis, Marie L

2013-01-01

Suicide represents a significant health disparity for communities in rural Alaska, and has implications for mental health among people who have lost loved ones from suicide. A qualitative interview study was conducted to examine the ways in which suicide has affected the lives of college students who have migrated from rural villages to an urban university (N = 25). The present research represents a secondary aim of the study-specifically, we examined the affective responses of Alaska Native college students from rural villages after completing in-depth semistructured interviews about their experiences related to suicide. Debriefing questions posed at the conclusion of the interviews revealed that the majority of participants (n 16) stated they felt "better" after completing the interview, and no participants reported feeling "worse." No participant required the use of the safety plan developed in case of severe emotional distress. All participants indicated they would be interested in participating in future research. Analysis of questions pertaining to the interview experience revealed the salience of foundation (the participant's prior experience discussing issues like suicide), process (the interview questions and questioning style), and outcomes (the challenges and benefits of participation described by the respondent). Findings provided important insights concerning the experience of discussing past trauma, perceived importance of research addressing coping with suicide, and the influence of past experiences in the process of talking about suicide.
The Effects of Hypergravic Fields on Neural Signalling in the Hippocampus

NASA Technical Reports Server (NTRS)

Horowitz, John; Horwitz, Barbara

1991-01-01

The goal of this grant is to study the effect of hypergravic fields on the modulation of hippocampal electrical activity by serotonin (5-HT). The proposed study represents a shift from our previous NASA grants covering three diverse areas in neurobiology (thermoregulation, vestibular and auditory brainstem evoked responses, and the hippocampus) to consideration of only one of these areas, the hippocampus. To place our proposed hippocampal experiments in context with relevant Spacelab-3 experiments and hypergravic experiments, two experiments on receptor changes in animals exposed to altered gravitational fields are first described. Our experiments build on these structural/biochemical observations and extend investigations to related electrical activity at 1 G and in hypergravic fields. The background continues with a review of past studies at 1G related to effects of serotonin on hippocampal electrical activity (i.e., population spikes, intracellular potentials).
Development of Flow over Blunt-Nosed Slender Bodies at Transonic Mach Numbers

NASA Astrophysics Data System (ADS)

Yanamashetti, Gireesh; Suryanarayana, G. K.; Mukherjee, Rinku

2017-04-01

Comparisons of the development of flow over a cylinder with a 20° cone nose and a cylinder with an ogive nose, which represent typical heat-shield configurations are studied using CFD and experiments at transonic Mach numbers. The Cp plots are studied to locate expansion or separation. Experiments are carried out at M = 0.8, 0.9, 0.95 and 1.1 and Re ≈ 2.45 × 106. Computations are carried out using the commercial package, FLUENT 6.3. Inadequate spatial resolution of pressure ports in experiments as well as limitations of the CFD tool result in some differences in experimental and CFD results.
"Being conditioned, yet becoming strong": Asian American women in menopausal transition.

PubMed

Im, Eun-Ok; Lee, Seung Hee; Chee, Wonshik

2011-07-01

This study aimed to explore the menopausal symptom experiences of Asian American midlife women within the contexts of their daily lives using a feminist approach. This was a qualitative online forum study among 13 Asian American women recruited through the Internet. Seven discussion topics related to the menopausal symptom experience were used, and the data were analyzed using thematic analysis. Five themes emerged: (a) “being conditioned,”(b) “becoming strong,” (c) “appreciating,” (d) “without making a fuss,” and (e) “quiet support.” DISCUSSION, CONCLUSION, AND IMPLICATIONS FOR PRACTICE: These themes represent the women’s marginalized but empowered experience duringmenopausal transition.
Efficient Optimization of Stimuli for Model-Based Design of Experiments to Resolve Dynamical Uncertainty.

PubMed

Mdluli, Thembi; Buzzard, Gregery T; Rundell, Ann E

2015-09-01

This model-based design of experiments (MBDOE) method determines the input magnitudes of an experimental stimuli to apply and the associated measurements that should be taken to optimally constrain the uncertain dynamics of a biological system under study. The ideal global solution for this experiment design problem is generally computationally intractable because of parametric uncertainties in the mathematical model of the biological system. Others have addressed this issue by limiting the solution to a local estimate of the model parameters. Here we present an approach that is independent of the local parameter constraint. This approach is made computationally efficient and tractable by the use of: (1) sparse grid interpolation that approximates the biological system dynamics, (2) representative parameters that uniformly represent the data-consistent dynamical space, and (3) probability weights of the represented experimentally distinguishable dynamics. Our approach identifies data-consistent representative parameters using sparse grid interpolants, constructs the optimal input sequence from a greedy search, and defines the associated optimal measurements using a scenario tree. We explore the optimality of this MBDOE algorithm using a 3-dimensional Hes1 model and a 19-dimensional T-cell receptor model. The 19-dimensional T-cell model also demonstrates the MBDOE algorithm's scalability to higher dimensions. In both cases, the dynamical uncertainty region that bounds the trajectories of the target system states were reduced by as much as 86% and 99% respectively after completing the designed experiments in silico. Our results suggest that for resolving dynamical uncertainty, the ability to design an input sequence paired with its associated measurements is particularly important when limited by the number of measurements.
Efficient Optimization of Stimuli for Model-Based Design of Experiments to Resolve Dynamical Uncertainty

PubMed Central

Mdluli, Thembi; Buzzard, Gregery T.; Rundell, Ann E.

2015-01-01

This model-based design of experiments (MBDOE) method determines the input magnitudes of an experimental stimuli to apply and the associated measurements that should be taken to optimally constrain the uncertain dynamics of a biological system under study. The ideal global solution for this experiment design problem is generally computationally intractable because of parametric uncertainties in the mathematical model of the biological system. Others have addressed this issue by limiting the solution to a local estimate of the model parameters. Here we present an approach that is independent of the local parameter constraint. This approach is made computationally efficient and tractable by the use of: (1) sparse grid interpolation that approximates the biological system dynamics, (2) representative parameters that uniformly represent the data-consistent dynamical space, and (3) probability weights of the represented experimentally distinguishable dynamics. Our approach identifies data-consistent representative parameters using sparse grid interpolants, constructs the optimal input sequence from a greedy search, and defines the associated optimal measurements using a scenario tree. We explore the optimality of this MBDOE algorithm using a 3-dimensional Hes1 model and a 19-dimensional T-cell receptor model. The 19-dimensional T-cell model also demonstrates the MBDOE algorithm’s scalability to higher dimensions. In both cases, the dynamical uncertainty region that bounds the trajectories of the target system states were reduced by as much as 86% and 99% respectively after completing the designed experiments in silico. Our results suggest that for resolving dynamical uncertainty, the ability to design an input sequence paired with its associated measurements is particularly important when limited by the number of measurements. PMID:26379275
Pedagogical Encounters, Graduate Teaching Assistants, and Decolonial Feminist Commitments

ERIC Educational Resources Information Center

Madden, Meredith

2014-01-01

This study examines the pedagogical experiences of fourteen graduate teaching assistants (GTAs) across academic disciplines at a large private university in the Northeastern US. The participants in this study represent a small, focused group of GTAs who hold progressive social justice commitments and share pedagogical philosophies anchored in…
Elementary General Music Teachers' Reflections on Instruction

ERIC Educational Resources Information Center

Delaney, Diane W.

2011-01-01

A qualitative study was completed to identify and study the content of selected elementary general music teachers' evaluations of their own instruction and the instruction of another elementary general music teacher. Participants represented a variety of educational backgrounds and teaching experience: Teacher A (9 years teaching Grades 4-6 at…
Student Conceptions of Oral Presentations

ERIC Educational Resources Information Center

Joughin, Gordon

2007-01-01

A phonographic study of students' experience of oral presentations in an open learning theology programme constituted three contrasting conceptions of oral presentations--as transmission of ideas; as a test of students' understanding of what they were studying; and as a position to be argued. Each of these conceptions represented a combination of…
What is the best clothing to prevent heat and cold stress? Experiences with thermal manikin.

PubMed

Magyar, Z; Tamas, R

2013-02-01

The present study summarizes the current knowledge of the heat and cold stress which might significantly affect military activities and might also occur among travellers who are not well adapted to weather variations during their journey. The selection of the best clothing is a very important factor in preserving thermal comfort. Our experiences with thermal manikin are also represented in this paper.
Forest research notes, Pacific Northwest Forest Experiment Station, No. 04, June 27, 1930.

Treesearch

1930-01-01

Some definite figures on the survival and seed production of seed trees left on national forest timber sales in the Douglas fir region are now available for six representative areas where approximately two trees were left per acre. The studies mere made by men in charge of timber sales on the national forests under the direction of the Experiment Station, and have now...
The Representation of Concrete and Abstract Concepts: Categorical versus Associative Relationships

ERIC Educational Resources Information Center

Geng, Jingyi; Schnur, Tatiana T.

2015-01-01

In 4 word-translation experiments, we examined the different representational frameworks theory (Crutch & Warrington, 2005; 2010) that concrete words are represented primarily by category, whereas abstract words are represented by association. In our experiments, Chinese-English bilingual speakers were presented with an auditory Chinese word…
On the quantum mechanics of consciousness, with application to anomalous phenomena

NASA Astrophysics Data System (ADS)

Jahn, Robert G.; Dunne, Brenda J.

1986-08-01

Theoretical explication of a growing body of empirical data on consciousness-related anomalous phenomena is unlikely to be achieved in terms of known physical processes. Rather, it will first be necessary to formulate the basic role of consciousness in the definition of reality before such anomalous experience can adequately be represented. This paper takes the position that reality is constituted only in the interaction of consciousness with its environment, and therefore that any scheme of conceptual organization developed to represent that reality must reflect the processes of consciousness as well as those of its environment. In this spirit, the concepts and formalisms of elementary quantum mechanics, as originally proposed to explain anomalous atomic-scale physical phenomena, are appropriated via metaphor to represent the general characteristics of consciousness interacting with any environment. More specifically, if consciousness is represented by a quantum mechanical wave function, and its environment by an appropriate potential profile, Schrödinger wave mechanics defines eigenfunctions and eigenvalues that can be associated with the cognitive and emotional experiences of that consciousness in that environment. To articulate this metaphor it is necessary to associate certain aspects of the formalism, such as the coordinate system, the quantum numbers, and even the metric itself, with various impressionistic descriptors of consciousness, such as its intensity, perspective, approach/avoidance attitude, balance between cognitive and emotional activity, and receptive/assertive disposition. With these established, a number of the generic features of quantum mechanics, such as the wave/particle duality, and the uncertainty, indistinguishability, and exclusion principles, display metaphoric relevance to familiar individual and collective experiences. Similarly, such traditional quantum theoretic exercises as the central force field and atomic structure, covalent molecular bonds, barrier penetration, and quantum statistical collective behavior become useful analogies for representation of a variety of consciousness experiences, both normal and anomalous, and for the design of experiments to study these systematically.
Galactic Structure: A Constructivist Approach to Teaching Astronomy.

ERIC Educational Resources Information Center

Domenech, Antonio; Casasus, Elena

1991-01-01

An astrophysics course based on the constructivist approach to science teaching is described. The study of galactic structure is given as an example. Direct experiences and observations, representative-symbolic language, organized knowledge, and formal strategies are emphasized. (KR)
[Elementary structure of a study].

PubMed

Bachmann, L M

2007-12-01

Medical research provides evidence in three gnostic domains; etiognosis, diagnosis and prognosis. The occurrence relation, the domain and the study population characterize every medical study. The determinant and the outcome define the occurrence relation. The domain defines the type of situation in which the occurrence relation is explored. The study population contains representatives of the domain whose experience is captured within the study.

A Novel Integrating Virtual Reality Approach for the Assessment of the Attachment Behavioral System

PubMed Central

Chicchi Giglioli, Irene Alice; Pravettoni, Gabriella; Sutil Martín, Dolores Lucia; Parra, Elena; Raya, Mariano A.

2017-01-01

Virtual reality (VR) technology represents a novel and powerful tool for behavioral research in psychological assessment. VR provides simulated experiences able to create the sensation of undergoing real situations. Users become active participants in the virtual environment seeing, hearing, feeling, and actuating as if they were in the real world. Currently, the most psychological VR applications concern the treatment of various mental disorders but not the assessment, that it is mainly based on paper and pencil tests. The observation of behaviors is costly, labor-intensive, and it is hard to create social situations in laboratory settings, even if the observation of actual behaviors could be particularly informative. In this framework, social stressful experiences can activate various behaviors of attachment for a significant person that can help to control and soothe them to promote individual’s well-being. Social support seeking, physical proximity, and positive and negative behaviors represent the main attachment behaviors that people can carry out during experiences of distress. We proposed VR as a novel integrating approach to measure real attachment behaviors. The first studies on attachment behavioral system by VR showed the potentiality of this approach. To improve the assessment during the VR experience, we proposed virtual stealth assessment (VSA) as a new method. VSA could represent a valid and novel technique to measure various psychological attributes in real-time during the virtual experience. The possible use of this method in psychology could be to generate a more complete, exhaustive, and accurate individual’s psychological evaluation. PMID:28701967
Dynamic test results for the CASES ground experiment

NASA Technical Reports Server (NTRS)

Bukley, Angelia P.; Patterson, Alan F.; Jones, Victoria L.

1993-01-01

The Controls, Astrophysics, and Structures Experiment in Space (CASES) Ground Test Facility (GTF) has been developed at Marshall Space Flight Center (MSFC) to provide a facility for the investigation of Controls/Structures Interaction (CSI) phenomena, to support ground testing of a potential shuttle-based CASES flight experiment, and to perform limited boom deployment and retraction dynamics studies. The primary objectives of the ground experiment are to investigate CSI on a test article representative of a Large Space Structure (LSS); provide a platform for Guest Investigators (GI's) to conduct CSI studies; to test and evaluate LSS control methodologies, system identification (ID) techniques, failure mode analysis; and to compare ground test predictions and flight results. The proposed CASES flight experiment consists of a 32 meter deployable/retractable boom at the end of which is an occulting plate. The control objective of the experiment is to maintain alignment of the tip plate (occulter) with a detector located at the base of the boom in the orbiter bay. The tip plate is pointed towards a star, the sun, or the galactic center to collect high-energy X-rays emitted by these sources. The tip plate, boom, and detector comprise a Fourier telescope. The occulting holes in the tip plate are approximately one millimeter in diameter making the alignment requirements quite stringent. Control authority is provided by bidirectional linear thrusters located at the boom tip and Angular Momentum Exchange Devices (AMED's) located at mid-boom and at the tip. The experiment embodies a number of CSI control problems including vibration suppression, pointing a long flexible structure, and disturbance rejection. The CASES GTF is representative of the proposed flight experiment with identical control objectives.
Studies of vorticity imbalance and stability, moisture budget, atmospheric energetics, and gradients of meteorological parameters during AVE 3

NASA Technical Reports Server (NTRS)

Scoggins, J. R. (Editor)

1978-01-01

Four diagnostic studies of AVE 3. are presented. AVE 3 represents a high wind speed wintertime situation, while most AVE's analyzed previously represented springtime conditions with rather low wind speeds. The general areas of analysis include the examination of budgets of vorticity, moisture, kinetic energy, and potential energy and a synoptic and statistical study of the horizontal gradients of meteorological parameters. Conclusions are integrated with and compared to those obtained in previously analyzed experiments (mostly springtime weather situations) so as to establish a more definitive understanding of the structure and dynamics of the atmosphere under a wide range of synoptic conditions.
The development of the hardware for studying biological clock systems under microgravity conditions, using scorpions as animal models

NASA Astrophysics Data System (ADS)

Serafini, L.; Viganò, W.; Donati, A.; Porciani, M.; Zolesi, V.; Schulze-Varnholt, D.; Manieri, P.; El-Din Sallam, A.; Schmäh, M.; Horn, E. R.

2007-02-01

The study of internal clock systems of scorpions in weightless conditions is the goal of the SCORPI experiment. SCORPI was selected for flight on the International Space Station (ISS) and will be mounted in the European facility BIOLAB, the European Space Agency (ESA) laboratory designed to support biological experiments on micro-organisms, cells, tissue, cultures, small plants and small invertebrates. This paper outlines the main features of a breadboard designed and developed in order to allow the analysis of critical aspects of the experiment. It is a complete tool to simulate the experiment mission on ground and it can be customised, adapted and tuned to the scientific requirements. The paper introduces the SCORPI-T experiment which represents an important precursor for the success of the SCORPI on BIOLAB. The capabilities of the hardware developed show its potential use for future similar experiments in space.
Going alone: the lived experience of female Arab-Muslim nursing students living and studying in the United States.

PubMed

McDermott-Levy, Ruth

2011-01-01

Since 2004, international student enrollment in the United States has increased. Middle Eastern students studying in the United States have been part of the increase. In 2008-2009 there were 29 140 Middle Eastern students, representing an 18% increase from the previous academic year. Despite these increases, there is limited research examining the experience of Arab-Muslim international students or international nursing students studying in the United States. Phenomenological inquiry was used to describe the experience of 12 female Omani nurses living in the United States while studying for their baccalaureate degrees in nursing. The women described the experience of going alone and being away from the support and presence of their large, extended families; this influenced their international student experience. They also described their religious, cultural, and educational adaptation. The experience of living and studying nursing in the United States was transformational as they became self-reliant, learned their capabilities, and adapted to cultural and educational expectations. Copyright © 2011 Elsevier Inc. All rights reserved.
Transport properties of nanocomposite and its simulation with L-R-C circuit

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

Gangopadhyay, Arnab, E-mail: agangulyphysics@gmail.com; Sarkar, Aditi, E-mail: agangulyphysics@gmail.com; Sarkar, A., E-mail: agangulyphysics@gmail.com

2014-04-24

The nano particles are represented in this communication by L-R-C equivalent circuit. The dc current voltage characteristics (CVC) of the proposed circuit have simulated using Circuit-Maker ® 2000. Experimental investigation on ZnO nano-composite with capping material gum acacia shows similar CVC. NPs are represented by C-R combinations to manifest the Coulomb blockade effect of a quantum dot. The capping material is represented by an inductor along with a resistance in series. Nine NPs with capping matrix are simulated. The dc current voltage characteristics (CVC) and gross feature of polarization nature obtained by experiment and simulation study are consistent.
Space Station needs, attributes and architectural options. Volume 2, book 1, part 2, task 1: Mission requirements

NASA Technical Reports Server (NTRS)

1983-01-01

Mission areas analyzed for input to the baseline mission model include: (1) commercial materials processing, including representative missions for producing metallurgical, chemical and biological products; (2) commercial Earth observation, represented by a typical carry-on mission amenable to commercialization; (3) solar terrestrial and resource observations including missions in geoscience and scientific land observation; (4) global environment, including representative missions in meteorology, climatology, ocean science, and atmospheric science; (5) materials science, including missions for measuring material properties, studying chemical reactions and utilizing the high vacuum-pumping capacity of space; and (6) life sciences with experiments in biomedicine and animal and plant biology.
Posttest calculation of the PBF LOC-11B and LOC-11C experiments using RELAP4/MOD6. [PWR

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

Hendrix, C.E.

Comparisons between RELAP4/MOD6, Update 4 code-calculated and measured experimental data are presented for the PBF LOC-11C and LOC-11B experiments. Independent code verification techniques are now being developed and this study represents a preliminary effort applying structured criteria for developing computer models, selecting code input, and performing base-run analyses. Where deficiencies are indicated in the base-case representation of the experiment, methods of code and criteria improvement are developed and appropriate recommendations are made.
Relationship between Adjunct and Full-Time Faculty Teaching at a For-Profit University

ERIC Educational Resources Information Center

Strom Kays, Sarah A.

2009-01-01

This qualitative case study explored the workplace relationships of adjunct and full-time faculty teaching at a for-profit university. The study was conducted at one campus of Segway University. Faculty in this study included men and women and represented different academic departments. All full-time faculty participants had experience teaching as…
Retention: An Inductive Study of Representative Student Groups at Middlesex County College.

ERIC Educational Resources Information Center

Harrower, Gordon, Jr.; And Others

This five-part report describes a study conducted by Middlesex County College (MCC) to examine the problems and experiences of various segments of its student body and to determine, on the basis of this examination, factors that aggravate student/college interaction and increase student attrition. Part I details study procedures, which involved a…
A Qualitative Study of the Perceived Relationship between Media Use and Adolescents' Academic Performance and Aggressive Behavior

ERIC Educational Resources Information Center

Korie, Daniel O.

2015-01-01

This study explored media usage among adolescents and its relations to academic performance and aggressive behavior from a qualitative research perspective. This study represents the first of its kind by utilizing a phenomenological methodology to gain insights about lived experiences of adolescents' media use relative to their academic…
Bilingual Development in Study-Abroad Journal Narratives: Three Case Studies from a Short-Term Program in Mexico

ERIC Educational Resources Information Center

Menard-Warwick, Julia; Palmer, Deborah

2012-01-01

This paper examines the linguistic and cultural development of three US university students in a one-month study-abroad program in Mexico, as represented in their bilingual journals. Through narrative analysis, the paper explores students' varied evaluations of their study-abroad experiences, as well as how these evaluations seemed to affect their…
Innovation and Consolidation in Curriculum Development and Reform: The Case of the New Social Studies

ERIC Educational Resources Information Center

Parry, Lindsay

2007-01-01

The New Social Studies movement of the 1960s and 1970s represents a significant era of curriculum development and reform in the United States, which had international implications. This article presents an Australian case study of the experiences of curriculum workers involved in the development of an elementary social studies curriculum in the…
The relation between bullying and subclinical psychotic experiences and the influence of the bully climate of school classes.

PubMed

Horrevorts, Esther M B; Monshouwer, Karin; Wigman, Johanna T W; Vollebergh, Wilma A M

2014-09-01

This study aims to examine the association between the bully climate of school classes and the prevalence of subclinical psychotic experiences among students who are involved in bullying (either as bully or as victim). Data were derived from the Dutch health behavior in school-aged children survey of 2005, a nationally representative cross-sectional study with a total of 5,509 adolescents between the age of 12 and 16. The data were analyzed using a multilevel regression analysis. The study revealed that both bullying and being bullied in school classes was associated with an increased level of subclinical psychotic experiences. The bully climate of a school class moderates this effect, i.e., the higher risk for bully-victims on subclinical psychotic experiences was less strong in classes with a higher percentage of classmates involved in bullying. Thus, bully climate has to be taken into account when studying the psychological experiences associated with being bullied.
The use of a science experiment curriculum with mothers and their preschool children in an Even Start literacy setting: A case study

NASA Astrophysics Data System (ADS)

Cadou, Judith Ann

The purpose of this study was to explore systematically the use of a science experiment curriculum in an Even Start program setting through an in-depth description of the verbal and nonverbal interaction of preschool children and their mothers engaged in constructing knowledge through active science experiment exploration, representative notation, and related informational text experiences. It also sought to document the mothers' perceptions of science exploration as a facilitator for their children's literacy and their awareness of ways to support such growth. Two in-depth studies were presented to profile, in detail, the process of mother and child meaning making within the structure of a science explorations context. An additional eight mother-child dyads participated for purposes of adding breadth to the study. Behaviors were documented through (a) videotape transcriptions of the mother-child interaction in this science inquiry context, (b) observation, (c) field notes, and (d) open-ended interviews with the mothers. Data were analyzed using the constant comparative method. The findings of this naturalistic study suggest the use of a linked mother-child dyad learning and literacy development process using prediction, experimentation, observation, and reflection, combined with related meaning-making verbal interaction, documentation, and reading, facilitated the child's knowledge acquisition, learning interests, and learning methodologies. Specifically, (a) the initiating setup for prediction placed the child at the center of her or his own inquiry and initiated verbal communication; (b) mother and child used the scientific thinking routine of predict, act on objects and observe, discover, evaluate, and make decisions, to be documented in second-level notation, as a mental organizer and scaffolding for inquiry and communication between them; (c) the children showed development in conceptual understanding within the context of active science exploration and across science units; (d) the children used the representative drawing and labeling of the experiment experience for extended experimentation and meaning making, thus using second-level notation for functional purposes; (e) the children showed increased initiative with expository text related to the experiment experiences; and (f) the mothers voiced perception of their children's and their own learning and a sense of efficacy in facilitating their children's learning.
Age 60 study, part III : consolidated database experiments final report.

DOT National Transportation Integrated Search

1994-10-01

This document is one of four products completed as a part of the Age 60 Rule research contract monitored by Pam Della Rocco, Civil Aerospace Medical Institute, Contracting Officer's Technical Representative. This work was performed. This report was a...
Industrial Training Research Project.

ERIC Educational Resources Information Center

Swanson, R. A.; Sawzin, S. A.

The study was an experimental comparison of the structured versus unstructed training of semiskilled production workers. The experiment was implemented using the following procedures, which are presented in detail: a representative semiskilled production job was selected, the two training programs were characterized and developed, trainees…
Examining Physics Career Interests: Recruitment and Persistence into College

NASA Astrophysics Data System (ADS)

Lock, R. M.; Hazari, Z.; Sadler, P. M.; Sonnert, G.

2012-03-01

Compared to the undergraduate population, the number of students obtaining physics degrees has been declining since the 1960s. This trend continues despite the increasing number of students taking introductory physics courses in high school and college. Our work uses an ex-post facto design to study the factors that influence students' decision to pursue a career in physics at the beginning of college. These factors include high school physics classroom experiences, other science-related experiences, and students' career motivations. The data used in this study is drawn from the Persistence Research in Science and Engineering (PRiSE) Project, a large-scale study that surveyed a nationally representative sample of college/university students enrolled in introductory English courses about their interests and prior experiences in science.
USN Manpower Determination Decision Making: A Case Study Using Imprint Pro to Validate the LCS Core Crew Manning Solution

DTIC Science & Technology

2014-12-01

available time consists of 56 hours of sleep (8 hours per 24 hour period), 14 hours for eating (messing), and 17 hours of free time (which includes 3 hours...experiences changes to their sleeping, eating , and working habits that then changes their body temperature peak times, respiratory rate, and hormone...training, personal hygiene, sleeping, and eating . The unplanned events are represented by the yellow tags in Figure 11 and represent emergencies that
Satellite Instructional Television Experiment (SITE): Reports from the NASA resident representative in India. [ATS 6

NASA Technical Reports Server (NTRS)

Galloway, H. L., Jr.

1976-01-01

Reports submitted by the NASA project representative for the Satellite Instructional Television Experiment (SITE) at Ahmedabad, India are presented. These reports deal with the coordination of all SITE related matters between the ATS 6 Project at Goddard Space Flight Center, NASA Headquarters, and the SITE Program in India.

Exploring the use of memory colors for image enhancement

NASA Astrophysics Data System (ADS)

Xue, Su; Tan, Minghui; McNamara, Ann; Dorsey, Julie; Rushmeier, Holly

2014-02-01

Memory colors refer to those colors recalled in association with familiar objects. While some previous work introduces this concept to assist digital image enhancement, their basis, i.e., on-screen memory colors, are not appropriately investigated. In addition, the resulting adjustment methods developed are not evaluated from a perceptual view of point. In this paper, we first perform a context-free perceptual experiment to establish the overall distributions of screen memory colors for three pervasive objects. Then, we use a context-based experiment to locate the most representative memory colors; at the same time, we investigate the interactions of memory colors between different objects. Finally, we show a simple yet effective application using representative memory colors to enhance digital images. A user study is performed to evaluate the performance of our technique.
Cyberbullying, psychological distress and self-esteem among youth in Quebec Schools

PubMed Central

Cénat, Jude Mary; Hébert, Martine; Blais, Martin; Lavoie, Francine; Guerrier, Mireille; Derivois, Daniel

2015-01-01

Purpose The advent of new technologies and social media offers a host of possibilities for teenagers to consolidate social networks. Unfortunately, new technologies also represent a potential setting for experiences of victimization. Methods The present study explores the prevalence of cyberbullying victimization in a representative sample of 8 194 teenagers in Quebec and the adverse associated consequences. Results Results indicate that 18% of boys and close to 1 out of 4 girls report at least one incident of cyberbullying in the past 12 months. Cyberbullying victimization contributes to the prediction of low self-esteem and psychological distress over and above other experiences of bullying in schools or other settings. Conclusions Cyberbullying appear as one important target for the design of prevention and intervention services designed for youth. PMID:25128859
Cyberbullying, psychological distress and self-esteem among youth in Quebec schools.

PubMed

Cénat, Jude Mary; Hébert, Martine; Blais, Martin; Lavoie, Francine; Guerrier, Mireille; Derivois, Daniel

2014-12-01

The advent of new technologies and social media offers a host of possibilities for teenagers to consolidate social networks. Unfortunately, new technologies also represent a potential setting for experiences of victimization. The present study explores the prevalence of cyberbullying victimization in a representative sample of 8 194 teenagers in Quebec and the adverse associated consequences. Results indicate that 18% of boys and close to 1 out of 4 girls report at least one incident of cyberbullying in the past 12 months. Cyberbullying victimization contributes to the prediction of low selfesteem and psychological distress over and above other experiences of bullying in schools or other settings. Cyberbullying appear as one important target for the design of prevention and intervention services designed for youth. Copyright © 2014 Elsevier B.V. All rights reserved.
Large Space Systems Technology, Part 2, 1981

NASA Technical Reports Server (NTRS)

Boyer, W. J. (Compiler)

1982-01-01

Four major areas of interest are covered: technology pertinent to large antenna systems; technology related to the control of large space systems; basic technology concerning structures, materials, and analyses; and flight technology experiments. Large antenna systems and flight technology experiments are described. Design studies, structural testing results, and theoretical applications are presented with accompanying validation data. These research studies represent state-of-the art technology that is necessary for the development of large space systems. A total systems approach including structures, analyses, controls, and antennas is presented as a cohesive, programmatic plan for large space systems.
Constructing Image-Based Culture Definitions Using Metaphors: Impact of a Cross-Cultural Immersive Experience

ERIC Educational Resources Information Center

Tuleja, Elizabeth A.

2017-01-01

This study provides an approach to teaching and learning in the international business (IB) classroom about cultural values, beliefs, attitudes, and norms through the study of cultural metaphor. The methodology is based on established qualitative methods by using participants' visual pictures and written explanations--representative of their…
The Effect of Implicit Stereotypes on the Physical Performance of Older Adults

ERIC Educational Resources Information Center

Moriello, Gabriele; Cotter, J. James; Shook, Nathalie; Dodd-McCue, Diane; Welleford, E. Ayn

2013-01-01

The purpose of this study was to explore how stereotypes affect physical performance in older adults. During Experiment 1, older adults were primed with objects representing aging stereotypes to determine whether these objects can activate stereotypes of aging. Results from the first part of this study provide evidence that certain material…
Fire and Ice: The Wisdom of Black Women in the Academy

ERIC Educational Resources Information Center

Dowdy, Joanne Kilgour

2008-01-01

This article presents the findings from a qualitative research project about a group of Black women scholars who discuss their experiences as academics in a predominantly White setting. The scholars represent fields including anthropology, education, Pan African studies, art education, and language studies. The themes found across the interviews…
An Appreciative Inquiry into Educational Administration Doctoral Programs: Stories from Doctoral Students at Three Universities

ERIC Educational Resources Information Center

Calabrese, Raymond L.; Zepeda, Sally J.; Peters, April L.; Hummel, Crystal; Kruskamp, William H.; San Martin, Teresa; Wynne, Stefanie C.

2007-01-01

A case study using appreciate inquiry identified and described the experiences of five educational administration doctoral students representing three universities regarding their doctoral program studies and dissertation process. Data were collected using reflective narratives and the Left Hand Right Hand Column Case Method. Data revealed (a) the…
Interactive Learning through Web-Mediated Peer Review of Student Science Reports

ERIC Educational Resources Information Center

Trautmann, Nancy M.

2009-01-01

Two studies analyzed impacts of writing and receiving web-mediated peer reviews on revision of research reports by undergraduate science students. After conducting toxicology experiments, 77 students posted draft reports and exchanged double-blind reviews. The first study randomly assigned students to four groups representing full, partial, or no…
A Study of the Quantity of Time for Teaching Reading.

ERIC Educational Resources Information Center

Florida Reading Association.

A study was conducted to provide descriptive information about the quantity of classroom time used for teaching reading and the interruptive events that occur during the scheduled reading time. Data were gathered from 148 public and private school teachers representing all grade levels and a wide range of teaching experience. The subjects each…
Long-Term Implications of Early Education and Care Programs for Australian Children

ERIC Educational Resources Information Center

Coley, Rebekah Levine; Lombardi, Caitlin McPherran; Sims, Jacqueline

2015-01-01

Using nationally representative data from the Longitudinal Study of Australian Children (LSAC; N = 5,107), this study assessed prospective connections between children's early education and care (EEC) experiences from infancy through preschool and their cognitive and behavioral functioning in 1st grade. Incorporating 6 waves of data, analyses…
Using Self-Instruction to Teach Counseling Skills to School Psychology Students: An Efficacy Study

ERIC Educational Resources Information Center

Loe, Scott A.; Jones, W. Paul; Crank, Joe N.; Krach, S. Kathleen

2009-01-01

Counseling is highly valued by school psychology faculty and practitioners but represents a small area of concentration within many graduate training programs, often comprised only of two or three survey courses without a supervised practicum experience. This multiple baseline, across subjects, study involving nine school psychology trainees…
Problematic Students of NASP-Approved Programs: An Exploratory Study of Graduate Student Views

ERIC Educational Resources Information Center

Trimble, Leasha D.; Stroebel, Sandra S.; Krieg, Fred Jay; Rubenstein, Robert L.

2012-01-01

This study reports the findings of an electronic exploratory survey of National Association of School Psychologists (NASP) Student Representatives. The purpose of the survey was to gather information about the perspective of graduate students concerning problematic peers and their experiences with them in school psychology training programs.…
Classroom Quality and Academic Skills: Approaches to Learning as a Moderator

ERIC Educational Resources Information Center

Meng, Christine

2015-01-01

The purpose of this study was to examine whether approaches to learning moderated the association between child care classroom environment and Head Start children's academic skills. The data came from the Head Start Family and Child Experiences Survey (FACES-2003 Cohort). The dataset is a nationally representative longitudinal study of Head Start…
Perceptions of Child Sexual Abuse--A Qualitative Interview Study with Representatives of the Socio-Legal System in Urban Tanzania

ERIC Educational Resources Information Center

Kisanga, Felix; Mbwambo, Jessie; Hogan, Norah; Nystrom, Lennarth; Emmelin, Maria; Lindmark, Gunilla

2010-01-01

Through in-depth interviews, this study explored perceptions and experiences of key players handling child sexual offense cases in Dar es Salaam, Tanzania. The informants included public police investigators, magistrates, legal workers, and social workers working with nongovernmental organizations. The interviews were recorded, transcribed…
Transgender College Students: An Exploratory Study of Perceptions, Engagement, and Educational Outcomes

ERIC Educational Resources Information Center

Dugan, John P.; Kusel, Michelle L.; Simounet, Dawn M.

2012-01-01

We explored transgender students' perceptions, engagement, and educational outcomes across 17 dimensions of the collegiate experience. Data were collected as part of a national study and represent a total of 91 transgender-identified college students as well as matching samples of nontransgender LGB and heterosexual peers for comparative purposes.…
Faculty Stakeholders' Perceptions of Leadership and Engagement in an Organizational Turnaround in Higher Education

ERIC Educational Resources Information Center

Brownell, Eileen Vlacancich

2016-01-01

This qualitative study represents an exploration into how faculty stakeholders in higher education experienced leadership actions and their own engagement with an organizational turnaround. Turnaround efforts were aimed at revitalization throughout the institution but little has been studied about faculty experience in this context. An interview…
You Sound Taller on the Telephone: A Practitioner's View of the Principalship.

ERIC Educational Resources Information Center

Dunklee, Dennis R.

This book presents a comprehensive case study of the professional life of a fictional school principal. Based entirely on case-study methodology, all the episodes discussed in the book depict actual events in everyday education leadership practice and represent a real-life education leadership experience through episodic progression. The case…
Music as Post-Traumatic Discourse: Nikolay Myaskovsky's Sixth Symphony

ERIC Educational Resources Information Center

Zuk, Patrick

2018-01-01

This essay explores ways in which musicologists might extend work undertaken by humanities scholars in the interdisciplinary field of trauma studies that has highlighted the centrality of traumatic experience to modernist creativity. It is focussed around a case study of a musical composition that represents the emotional aftermath of a traumatic…
Teaching College English and English Education: Reflective Stories.

ERIC Educational Resources Information Center

McCracken, H. Thomas, Ed.; Larson, Richard L., Ed.; Entes, Judith, Ed.

In this collection of 32 narrative essays, scholars and teachers of English and English education share their excitement as they reflect on their professional growth over the last 30 years. The firsthand stories in the collection represent "a study of theory and applied theory, grounded in personal experience and academic study over many…

Examining the Role of Reflection in ePortfolios: A Case Study

ERIC Educational Resources Information Center

Landis, Cynthia M.; Scott, Susan B.; Kahn, Susan

2015-01-01

Extended institutional experience with ePortfolios grounded and framed this qualitative case study guided by the research question: Why, how, and with what success is reflection, as a teaching/learning process, employed among ePortfolio projects at Indiana University-Purdue University Indianapolis (IUPUI)? Thirty-two representatives of 16 varied…
The Carrot and the Stick? Strategies to Improve Compliance with College Campus Tobacco Policies

ERIC Educational Resources Information Center

Fallin-Bennett, Amanda; Roditis, Maria; Glantz, Stanton A.

2017-01-01

Objective: Tobacco-free policies are being rapidly adopted nationwide, yet compliance with these policies remains a challenge. This study explored college campus key informants' experiences with tobacco policies, and their perceived benefits, drawbacks, and outcomes. Participants: The sample for this study was 68 key informants representing 16…
Foreground Subtraction and Signal reconstruction in redshifted 21cm Global Signal Experiments using Artificial Neural Networks

NASA Astrophysics Data System (ADS)

Choudhury, Madhurima; Datta, Abhirup

2018-05-01

Observations of HI 21cm transition line is a promising probe into the Dark Ages and Epoch-of-Reionization. Detection of this redshifted 21cm signal is one of the key science goal for several upcoming low-frequency radio telescopes like HERA, SKA and DARE. Other global signal experiments include EDGES, LEDA, BIGHORNS, SCI-HI, SARAS. One of the major challenges for the detection of this signal is the accuracy of the foreground source removal. Several novel techniques have been explored already to remove bright foregrounds from both interferometric as well as total power experiments. Here, we present preliminary results from our investigation on application of ANN to detect 21cm global signal amidst bright galactic foreground. Following the formalism of representing the global 21cm signal by 'tanh' model, this study finds that the global 21cm signal parameters can be accurately determined even in the presence of bright foregrounds represented by 3rd order log-polynomial or higher.
Wind Tunnel Experiments to Study Chaparral Crown Fires.

PubMed

Cobian-Iñiguez, Jeanette; Aminfar, AmirHessam; Chong, Joey; Burke, Gloria; Zuniga, Albertina; Weise, David R; Princevac, Marko

2017-11-14

The present protocol presents a laboratory technique designed to study chaparral crown fire ignition and spread. Experiments were conducted in a low velocity fire wind tunnel where two distinct layers of fuel were constructed to represent surface and crown fuels in chaparral. Chamise, a common chaparral shrub, comprised the live crown layer. The dead fuel surface layer was constructed with excelsior (shredded wood). We developed a methodology to measure mass loss, temperature, and flame height for both fuel layers. Thermocouples placed in each layer estimated temperature. A video camera captured the visible flame. Post-processing of digital imagery yielded flame characteristics including height and flame tilt. A custom crown mass loss instrument developed in-house measured the evolution of the mass of the crown layer during the burn. Mass loss and temperature trends obtained using the technique matched theory and other empirical studies. In this study, we present detailed experimental procedures and information about the instrumentation used. The representative results for the fuel mass loss rate and temperature filed within the fuel bed are also included and discussed.
The Cycle of Violence: Examining Attitudes Toward and Experiences of Corporal Punishment in a Representative German Sample.

PubMed

Witt, Andreas; Fegert, Jörg M; Rodens, Klaus P; Brähler, Elmar; Lührs Da Silva, Claudia; Plener, Paul L

2017-09-01

The use of corporal punishment (CP) is controversial despite the negative consequences of its use that have been documented. Consequences include the use of CP by those who experienced CP themselves, described in the theory of the cycle of violence. There are little data on the cycle of violence, especially on those who break it and in representative samples. This study examines the cycle of violence in a representative sample by analyzing experiences of and attitudes toward CP. Attitudes toward, and own experiences of, CP by their parents were assessed in a sample of 2,519 individuals (female 54.6%, age range = 14-99 years, M = 48.9 years). Latent class analysis (LCA) was used to identify subgroups of participants who support and oppose CP. Breaking the cycle, defined as having experienced CP and opposing CP, was examined. Factors associated with positive and negative attitudes toward CP were identified using group comparisons and binary logistic regression. The majority of the sample opposed CP (56%), whereas one third supported less severe forms of CP and 8.2% also supported severe CP. Those supporting CP reported having experienced CP by their parents more often. Of those who had experienced CP, 47% were identified as breaking the cycle. Female gender, younger age, not being divorced, and being married and living together, as well as a higher level of education were associated with breaking the cycle. Even though CP was legally banned in Germany, a relatively high proportion still reports positive attitudes toward and experiences of CP. The ban of CP by the federal government seems to be an effective measure to change attitudes on a societal level as rates were lower in comparison with earlier studies. Future studies should examine interactions between different types of CP, attitudes toward its use, and additional mediating factors.
Medicare contracting risk/Medicare risk contracting: a life-cycle view from twelve markets.

PubMed

Hurley, Robert E; Grossman, Joy M; Strunk, Bradley C

2003-02-01

To examine the evolution of the Medicare HMO program from 1996 to 2001 in 12 nationally representative urban markets by exploring how the separate and confluent influences of government policy initiatives and health plans' strategic aims and operational experience affected the availability of HMOs to Medicare beneficiaries. Qualitative data gathered from 12 nationally representative urban communities with more than 200,000 residents each, in tandem with quantitative information from the Centers for Medicare and Medicaid Services and other sources. Detailed interview protocols, developed as part of the multiyear, multimethod Community Tracking Study of the Center for Studying Health System Change, were used to conduct three rounds of interviews (1996, 1998, and 2000-2001) with health plans and providers in 12 nationally representative urban communities. A special focus during the third round of interviews was on gathering information related to Medicare HMOs' experience in the previous four years. This information was used to build on previous research to develop a longitudinal perspective on health plans' experience in Medicare's HMO program. From 1996 to 2001, the activities and expectations of health plans in local markets underwent a rapid and dramatic transition from enthusiasm for the Medicare HMO product, to abrupt reconsideration of interest corresponding to changes in the Balanced Budget Act of 1997, on to significant retrenchment and disillusionment. Policy developments were important in their own right, but they also interacted with shifts in the strategic aims and operational experiences of health plans that reflect responses to insurance underwriting cycle pressures and pushback from providers. The Medicare HMO program went through a substantial reversal of fortune during the study period, raising doubts about whether its downward course can be altered. Market-level analysis reveals that virtually all momentum for the program has been lost and that enrollment is shrinking back to the levels and locations found in the mid-1990s.
Childhood trauma and psychosis in a prospective cohort study: cause, effect, and directionality.

PubMed

Kelleher, Ian; Keeley, Helen; Corcoran, Paul; Ramsay, Hugh; Wasserman, Camilla; Carli, Vladimir; Sarchiapone, Marco; Hoven, Christina; Wasserman, Danuta; Cannon, Mary

2013-07-01

Using longitudinal and prospective measures, the authors assessed the relationship between childhood trauma and psychotic experiences, addressing the following questions: 1) Does exposure to trauma predict incident psychotic experiences? 2) Does cessation of trauma predict cessation of psychotic experiences? 3) What is the direction of the relationship between childhood trauma and psychotic experiences? This was a nationally representative prospective cohort study of 1,112 school-based adolescents 13-16 years of age, assessed at baseline and at 3-month and 12-month follow-ups for childhood trauma (physical assault and bullying) and psychotic experiences. A bidirectional relationship was observed between childhood trauma and psychosis, with trauma predicting psychotic experiences over time and vice versa. However, even after accounting for this bidirectional relationship with a number of strict adjustments (only newly incident psychotic experiences occurring over the course of the study following exposure to traumatic experiences were examined), trauma was strongly predictive of psychotic experiences. A dose-response relationship was observed between severity of bullying and risk for psychotic experiences. Moreover, cessation of trauma predicted cessation of psychotic experiences, with the incidence of psychotic experiences decreasing significantly in individuals whose exposure to trauma ceased over the course of the study. After a series of conservative adjustments, the authors found that exposure to childhood trauma predicted newly incident psychotic experiences. The study also provides the first direct evidence that cessation of traumatic experiences leads to a reduced incidence of psychotic experiences.
Use of Tablet Computers to Promote Physical Therapy Students' Engagement in Knowledge Translation During Clinical Experiences

PubMed Central

Loeb, Kathryn; Barbosa, Sabrina; Jiang, Fei; Lee, Karin T.

2016-01-01

Background and Purpose: Physical therapists strive to integrate research into daily practice. The tablet computer is a potentially transformational tool for accessing information within the clinical practice environment. The purpose of this study was to measure and describe patterns of tablet computer use among physical therapy students during clinical rotation experiences. Methods: Doctor of physical therapy students (n = 13 users) tracked their use of tablet computers (iPad), loaded with commercially available apps, during 16 clinical experiences (6-16 weeks in duration). Results: The tablets were used on 70% of 691 clinic days, averaging 1.3 uses per day. Information seeking represented 48% of uses; 33% of those were foreground searches for research articles and syntheses and 66% were for background medical information. Other common uses included patient education (19%), medical record documentation (13%), and professional communication (9%). The most frequently used app was Safari, the preloaded web browser (representing 281 [36.5%] incidents of use). Users accessed 56 total apps to support clinical practice. Discussion and Conclusions: Physical therapy students successfully integrated use of a tablet computer into their clinical experiences including regular activities of information seeking. Our findings suggest that the tablet computer represents a potentially transformational tool for promoting knowledge translation in the clinical practice environment. Video Abstract available for more insights from the authors (see Supplemental Digital Content 1, http://links.lww.com/JNPT/A127). PMID:26945431
[Patients' preferences and experience regarding participation in nursing care decisions in acute hospitals--an analysis of conformity of preferences and experience, and factors influencing different types of decision making].

PubMed

Smoliner, Andrea; Hantikainen, Virpi; Mayer, Hanna; Ponocny-Seliger, Elisabeth; Them, Christa

2009-12-01

Patients' preferences regarding their participation in nursing care decisions represent a key aspect of the concept of evidence-based nursing; nonetheless, very little quantitative research has been carried out in this area. The aim of the present study was to describe the patients' preferences and experience concerning their participation in nursing care decision-making processes in acute hospitals. A total of 967 patients in five hospitals in Vienna participated in this study by completing questionnaires. The results revealed that 38.5 % of patients preferred the paternalistic style of decision-making, 42.1 % wanted to make decisions together with the nursing staff and 5.7 % expressed a wish to make their own decisions. During their hospital stay, however, patients experienced paternalistic decision-making to a higher degree than they wished for. Age, sex, form of treatment and subjectively experienced health condition represented person-related characteristics that influenced preferences regarding the form of decision-making. The results of this study underline the importance of collecting data on patients' preferences in decision-making processes in order to meet the social, legal, and professional demands of patient-oriented nursing care based on the most recent scientific knowledge.
Perceived breast cancer risk: heuristic reasoning and search for a dominance structure.

PubMed

Katapodi, Maria C; Facione, Noreen C; Humphreys, Janice C; Dodd, Marylin J

2005-01-01

Studies suggest that people construct their risk perceptions by using inferential rules called heuristics. The purpose of this study was to identify heuristics that influence perceived breast cancer risk. We examined 11 interviews from women of diverse ethnic/cultural backgrounds who were recruited from community settings. Narratives in which women elaborated about their own breast cancer risk were analyzed with Argument and Heuristic Reasoning Analysis methodology, which is based on applied logic. The availability, simulation, representativeness, affect, and perceived control heuristics, and search for a dominance structure were commonly used for making risk assessments. Risk assessments were based on experiences with an abnormal breast symptom, experiences with affected family members and friends, beliefs about living a healthy lifestyle, and trust in health providers. Assessment of the potential threat of a breast symptom was facilitated by the search for a dominance structure. Experiences with family members and friends were incorporated into risk assessments through the availability, simulation, representativeness, and affect heuristics. Mistrust in health providers led to an inappropriate dependence on the perceived control heuristic. Identified heuristics appear to create predictable biases and suggest that perceived breast cancer risk is based on common cognitive patterns.
It is time to combine the two main traditions in the research on the neural correlates of consciousness: C = L × D

PubMed Central

Bachmann, Talis; Hudetz, Anthony G.

2014-01-01

Research on neural correlates of consciousness has been conducted and carried out mostly from within two relatively autonomous paradigmatic traditions – studying the specific contents of conscious experience and their brain-process correlates and studying the level of consciousness. In the present paper we offer a theoretical integration suggesting that an emphasis has to be put on understanding the mechanisms of consciousness (and not a mere correlates) and in doing this, the two paradigmatic traditions must be combined. We argue that consciousness emerges as a result of interaction of brain mechanisms specialized for representing the specific contents of perception/cognition – the data – and mechanisms specialized for regulating the level of activity of whatever data the content-carrying specific mechanisms happen to represent. Each of these mechanisms are necessary because without the contents there is no conscious experience and without the required level of activity the processed contents remain unconscious. Together the two mechanisms, when activated up to a necessary degree each, provide conditions sufficient for conscious experience to emerge. This proposal is related to pertinent experimental evidence. PMID:25202297
Redefining a Model

ERIC Educational Resources Information Center

Hodges, Thomas E.

2007-01-01

This article describes an alternate way to utilize a circular model to represent thirds by incorporating areas of circular segments, trigonometric functions, and geometric transformations. This method is appropriate for students studying geometry and trigonometry at the high shool level. This task provides valuable learning experiences that…
Assessing Photosynthesis by Fluorescence Imaging

ERIC Educational Resources Information Center

Saura, Pedro; Quiles, Maria Jose

2011-01-01

This practical paper describes a novel fluorescence imaging experiment to study the three processes of photochemistry, fluorescence and thermal energy dissipation, which compete during the dissipation of excitation energy in photosynthesis. The technique represents a non-invasive tool for revealing and understanding the spatial heterogeneity in…
Improving the conspicuity of trailblazing signs for incident management.

DOT National Transportation Integrated Search

1998-03-01

This report represents efforts to design and evaluate a new sign design for emergency route trailblazing in a two-part series. : Study was an off-road field experiment conducted to determine the best sign color combination, letter stroke width, and l...
The influence of listener experience and academic training on ratings of nasality.

PubMed

Lewis, Kerry E; Watterson, Thomas L; Houghton, Sarah M

2003-01-01

This study assessed listener agreement levels for nasality ratings, and the strength of relationship between nasality ratings and nasalance scores on one hand, and listener clinical experience and formal academic training in cleft palate speech on the other. The listeners were 12 adults who represented four levels of clinical experience and academic training in cleft palate speech. Three listeners were teachers with no clinical experience and no academic training (TR), three were graduate students in speech-language pathology (GS) with academic training but no clinical experience, three were craniofacial surgeons (MD) with extensive experience listening to cleft palate speech but with no academic training in speech disorders, and three were certified speech-language pathologists (SLP) with both extensive academic training and clinical experience. The speech samples were audio recordings from 20 persons representing a range of nasality from normal to severely hypernasal. Nasalance scores were obtained simultaneously with the audio recordings. Results revealed that agreement levels for nasality ratings were highest for the SLPs, followed by the MDs. Thus, the more experienced groups tended to be more reliable. Mean nasality ratings obtained for each of the rater groups revealed an inverse relationship with experience. That is, the two groups with clinical experience (SLP and MD) tended to rate nasality lower than the two groups without experience (GS and TR). Correlation coefficients between nasalance scores and nasality judgments were low to moderate for all groups and did not follow a pattern. EDUCATIONAL OUTCOMES: As a result of this activity, the reader will be able to (1) describe the influence of listener experience and academic training in cleft palate speech on perceptual ratings of nasality. (2) describe the influence of experience and training on the nasality/nasalance relationship and, (3) compare the present findings to previous findings reported in the literature.
Separate and cumulative effects of adverse childhood experiences in predicting adult health and health care utilization.

PubMed

Chartier, Mariette J; Walker, John R; Naimark, Barbara

2010-06-01

Objectives of this population-based study were: (1) to examine the relative contribution of childhood abuse and other adverse childhood experiences to poor adult health and increased health care utilization and (2) to examine the cumulative effects of adverse childhood experiences on adult health and health care utilization. Data from the Ontario Health Survey, a representative population sample (n=9,953) of respondents aged 15 years and older, were analyzed using logistic regression. Adverse childhood experiences examined were childhood physical and sexual abuse, parental marital conflict, poor parent-child relationship, low parental education and parental psychopathology. Most (72%) respondents reported at least one adverse childhood experience and a considerable proportion of respondents (37%) reported two or more of these experiences. In examining the bivariate models, childhood physical and sexual abuse had a stronger influence than other types of adverse childhood experiences. With the addition of other adverse childhood experiences in the model, the odds ratios for childhood abuse were attenuated but remained statistically significant for most health outcomes. This suggests that childhood abuse may have a unique adverse influence on the development of poor adult health. When an aggregate variable was created to explore the cumulative effects of adverse childhood experience, the odds were increased, with each additional experience, for reporting multiple health problems [odds ratio (OR): 1.22], poor self-rated health (OR: 1.18), pain (OR: 1.24), disability (OR: 1.24), general practitioner use (OR: 1.12), emergency room use (OR: 1.29) and health professional use (OR: 1.19). This study suggests that childhood abuse and other adverse childhood experiences are overlapping risk factors for long-term adult health problems and that the accumulation of these adverse experiences increases the risk of poor adult health. This study highlights the importance of the many adverse childhood experiences influencing long-term health. In practice, childhood abuse is often difficult to identify as families tend to keep it hidden and reported cases represent only a small percentage of the actual cases. Assessments and interventions which focus on improving socio-economic status, strengthening marital and parent-child relationships, and supporting parents with mental health issues are less threatening for families than assessing their experiences with abuse and neglect and are more likely to be effective in identifying and supporting at-risk families. Copyright 2010 Elsevier Ltd. All rights reserved.
Design and Fabrication of DebriSat - A Representative LEO Satellite for Improvements to Standard Satellite Breakup Models

NASA Technical Reports Server (NTRS)

Clark, S.; Dietrich, A.; Fitz-Coy, N.; Weremeyer, M.; Liou, J.-C.

2012-01-01

This paper discusses the design and fabrication of DebriSat, a 50 kg satellite developed to be representative of a modern low Earth orbit satellite in terms of its components, materials used, and fabrication procedures. DebriSat will be the target of a future hypervelocity impact experiment to determine the physical characteristics of debris generated after an on-orbit collision of a modern LEO satellite. The major ground-based satellite impact experiment used by DoD and NASA in their development of satellite breakup models was SOCIT, conducted in 1992. The target used for that experiment was a Navy transit satellite (40 cm, 35 kg) fabricated in the 1960's. Modern satellites are very different in materials and construction techniques than those built 40 years ago. Therefore, there is a need to conduct a similar experiment using a modern target satellite to improve the fidelity of the satellite breakup models. To ensure that DebriSat is truly representative of typical LEO missions, a comprehensive study of historical LEO satellite designs and missions within the past 15 years for satellites ranging from 1 kg to 5000 kg was conducted. This study identified modern trends in hardware, material, and construction practices utilized in recent LEO missions. Although DebriSat is an engineering model, specific attention is placed on the quality, type, and quantity of the materials used in its fabrication to ensure the integrity of the outcome. With the exception of software, all other aspects of the satellite s design, fabrication, and assembly integration and testing will be as rigorous as that of an actual flight vehicle. For example, to simulate survivability of launch loads, DebriSat will be subjected to a vibration test. As well, the satellite will undergo thermal vacuum tests to verify that the components and overall systems meet typical environmental standards. Proper assembly and integration techniques will involve comprehensive joint analysis, including the precise torqueing of fasteners and thread locking. Finally, the implementation of process documentation and verification procedures is discussed to provide a comprehensive overview of the design and fabrication of this representative LEO satellite.
Guide to the Blacks Mountain Experimental Forest - A sustained yield experiment in ponderosa pine in northeastern California

Treesearch

E.I. Kotok

1938-01-01

Experimental forests, watersheds, and ranges are the field laboratories in the research structure of the Forest Service. The California Forest and Range Experiment Station maintains four experimental forests representing the more important timber types in the Pine Region.The Blacks Mountain Experimental Forest represents the ponderosa pine...
Can Monkeys (Macaca mulatta) Represent Invisible Displacement?

NASA Technical Reports Server (NTRS)

Filion, Christine M.; Washburn, David A.; Gulledge, Jonathan P.

1996-01-01

Four experiments were conducted to assess whether or not rhesus macaques (Macaca mulatta) could represent the unperceived movements of a stimulus. Subjects were tested on 2 computerized tasks, HOLE (monkeys) and LASER (humans and monkeys), in which subjects needed to chase or shoot at, respectively, a moving target that either remained visible or became invisible for a portion of its path of movement. Response patterns were analyzed and compared between target-visible and target-invisible conditions. Results of Experiments 1, 2, and 3 demonstrated that the monkeys are capable of extrapolating movement. That this extrapolation involved internal representation of the target's invisible movement was suggested but not confirmed. Experiment 4, however, demonstrated that the monkeys are capable of representing the invisible displacements of a stimulus.
Response of religious groups to HIV/AIDS as a sexually transmitted infection in Trinidad

PubMed Central

Genrich, Gillian L; Brathwaite, Brader A

2005-01-01

Background HIV/AIDS-related stigma and discrimination are significant determinants of HIV transmission in the Caribbean island nation of Trinidad and Tobago (T&T), where the adult HIV/AIDS prevalence is 2.5%. T&T is a spiritually-aware society and over 104 religious groups are represented. This religious diversity creates a complex social environment for the transmission of a sexually transmitted infection like HIV/AIDS. Religious leaders are esteemed in T&T's society and may use their position and frequent interactions with the public to promote HIV/AIDS awareness, fight stigma and discrimination, and exercise compassion for people living with HIV/AIDS (PWHA). Some religious groups have initiated HIV/AIDS education programs within their membership, but previous studies suggest that HIV/AIDS remains a stigmatized infection in many religious organizations. The present study investigates how the perception of HIV/AIDS as a sexually transmitted infection impacts religious representatives' incentives to respond to HIV/AIDS in their congregations and communities. In correlation, the study explores how the experiences of PWHA in religious gatherings impact healing and coping with HIV/AIDS. Methods Between November 2002 and April 2003, in-depth interviews were conducted with 11 religious representatives from 10 Christian, Hindu and Muslim denominations. The majority of respondents were leaders of religious services, while two were active congregation members. Religious groups were selected based upon the methods of Brathwaite. Briefly, 26 religious groups with the largest followings according to 2000 census data were identified in Trinidad and Tobago. From this original list, 10 religious groups in Northwest Trinidad were selected to comprise a representative sample of the island's main denominations. In-depth interviews with PWHA were conducted during the same study period, 2002–2003. Four individuals were selected from a care and support group located in Port of Spain based upon their perceived willingness to discuss religious affiliation and describe how living with a terminal infection has affected their spiritual lives. The interviewer, a United States Fulbright Scholar, explained the nature and purpose of the study to all participants. Relevant ethical procedures associated with the collection of interview data were adopted: interviews were conducted in a non-coercive manner and confidentiality was assured. All participants provided verbal consent, and agreed to be interviewed without financial or other incentive. Ethics approval was granted on behalf of the Caribbean Conference of Churches Ethics Committee. Interview questions followed a guideline, and employed an open-ended format to facilitate discussion. All interviews were recorded and transcribed by the interviewer. Results Religious representatives' opinions were grouped into the following categories: rationale for the spread of HIV/AIDS, abstinence, condom use, sexuality and homosexuality, compassion, experiences with PWHA, recommendations and current approach to addressing HIV/AIDS in congregations. Religious representatives expressed a measure of acceptance of HIV/AIDS and overwhelmingly upheld compassion for PWHA. Some statements, however, suggested that HIV/AIDS stigma pervades Trinidad's religious organizations. For many representatives, HIV/AIDS was associated with a promiscuous lifestyle and/or homosexuality. Representatives had varying levels of interaction with PWHA, but personal experiences were positively associated with current involvement in HIV/AIDS initiatives. All 4 PWHA interviewed identified themselves as belonging to Christian denominations. Three out of the 4 PWHA described discriminatory experiences with pastors or congregation members during gatherings for religious services. Nonetheless, PWHA expressed an important role for faith and religion in coping with HIV. Conclusion Religious groups in Trinidad are being challenged to promote a clear and consistent response to the HIV/AIDS epidemic; a response that may reflect personal experiences and respect religious doctrine in the context of sex and sexuality. The study suggests that (1) religious leaders could improve their role in the fight against HIV/AIDS with education and sensitization-specifically aimed at dismantling the myths about HIV transmission, and the stereotyping of susceptible sub-populations, and (2) a consultative dialogue between PWHAs and religious leaders is pivotal to a successful faith-based HIV intervention in Trinidad. PMID:16288659

Knowledge Representation and Self-Regulatory Experiences of Expert and Novice Certified Athletic Trainers in College and University Settings

ERIC Educational Resources Information Center

Gardin, Fredrick Anthony

2009-01-01

The purpose of this study was to describe how male, collegiate, certified athletic trainers (AT's) represent knowledge during 5 injury evaluation scenarios. A second purpose of the study was to identify what self-regulatory behaviors participants engaged in to improve or maintain their skills. Knowledge representation was studied as cue selection…
How Husbands Cope When Pregnancy Fails: A Longitudinal Study of Infertility and Psychosocial Generativity. Working Paper No. 167.

ERIC Educational Resources Information Center

Snarey, John; And Others

The experience of marital infertility is a major biosocial life crisis that also represents a serious threat to the development of psychosocial generativity. Psychological studies of the consequences of involuntary infertility, however, are rare. A study was undertaken to identify variations in the coping patterns used by men who have experienced…
[Low-dose rate brachytherapy with locally integrated beta emitters after internal urethrotomy. A pilot project using an animal model].

PubMed

Weidlich, P; Adam, C; Sroka, R; Lanzl, I; Assmann, W; Stief, C

2007-09-01

The treatment of urethral strictures represents an unsolved urological problem. The effect of a (32)P-coated urethral catheter in the sense of low-dose rate brachytherapy to modulate wound healing will be analyzed in an animal experiment. Unfortunately it is not possible to present any results because this is being studied for the first time and there are no experiences with low-dose rate brachytherapy and this form of application in the lower urinary tract. Furthermore the animal experiment will only start in the near future. Both decade-long experiences with radiotherapy to treat benign diseases and our own results of previous studies in otolaryngology and ophthalmology let us expect a significantly lower formation of urethral strictures after internal urethrotomy. This study will contribute to improving the treatment of urethral strictures as demanded in previous papers.
Transnational English Learning Experiences and the Trajectory of Ethnic Identity: Korean Early Study Abroad Undergraduates and Their Parents

ERIC Educational Resources Information Center

Lee, Mun Woo

2015-01-01

This study examines how Korean ethnic identity can be represented differently by Korean early study abroad undergraduates in the U.S. and by their parents. The data were collected from in-depth individual interviews with 22 Korean early study abroad undergraduates and 10 of their parents, and the collected data were analyzed using critical…
BIM LAU-PE: Seedlings in Microgravity

NASA Astrophysics Data System (ADS)

Gass, S.; Pennese, R.; Chapuis, D.; Dainesi, P.; Nebuloni, S.; Garcia, M.; Oriol, A.

2015-09-01

The effect of gravity on plant roots is an intensive subject of research. Sounding rockets represent a costeffective platform to study this effect under microgravity conditions. As part of the upcoming MASER 13 sounding rocket campaign, two experiments on Arabidopsis thaliana seedlings have been devised: GRAMAT and SPARC. These experiments are aimed at studying (1) the genes that are specifically switched on or off during microgravity, and (2) the position of auxin-transporting proteins during microgravity. To perform these experiments, RUAG Space Switzerland site of Nyon, in collaboration with the Swedish Space Corporation (SSC) and the University of Freiburg, has developed the BIM LAU-PE (Biolology In Microgravity Late Access Unit Plant Experiment). In the following an overview of the BIM LAU-PE design is presented, highlighting specific module design features and verifications performed. A particular emphasis is placed on the parabolic flight experiments, including results of the micro-g injection system validation.
What else are psychotherapy trainees learning? A qualitative model of students' personal experiences based on two populations.

PubMed

Pascual-Leone, Antonio; Rodriguez-Rubio, Beatriz; Metler, Samantha

2013-01-01

After an introductory course in experiential-integrative psychotherapy, 21 graduate students provided personal narratives of their experiences, which were analyzed using the grounded theory method. Results produced 37 hierarchically organized experiences, revealing that students perceived multiple changes in both professional (i.e., skill acquisition and learning related to the therapeutic process) and personal (i.e., self growth in a more private sphere) domains. Analysis also highlighted key areas of difficulties in training. By adding the personal accounts of graduate trainees, this study enriches and extends Pascual-Leone et al.'s (2012) findings on undergraduates' experiences, raising the number of cases represented in the model to 45. Findings confirm the model of novice trainee experiences while highlighting the unique experiences of undergraduate vs. graduate trainees.
Traffic model for commercial payloads in the Materials Experiment Assembly (MEA). [market research in commercial space processing

NASA Technical Reports Server (NTRS)

Tietzel, F. A.

1979-01-01

One hundred individuals representing universities, technical institutes, government agencies, and industrial facilities were surveyed to determine potential commercial use of a self-contained, automated assembly for the space processing of materials during frequent shuttle flights for the 1981 to 1987 period. The approach used and the results of the study are summarized. A time time-phased projection (traffic model) of commercial usage of the materials experiment assembly is provided.
Distorted neutrino oscillations from time varying cosmic fields

NASA Astrophysics Data System (ADS)

Krnjaic, Gordan; Machado, Pedro A. N.; Necib, Lina

2018-04-01

Cold, ultralight (≪eV ) bosonic fields can induce fast temporal variation in neutrino couplings, thereby distorting neutrino oscillations. In this paper, we exploit this effect to introduce a novel probe of neutrino time variation and dark matter at long-baseline experiments. We study several representative observables and find that current and future experiments, including DUNE and JUNO, are sensitive to a wide range of model parameters over many decades in mass reach and time-variation periodicity.
Field Placement Treatments: A Comparative Study

ERIC Educational Resources Information Center

Parkison, Paul T.

2008-01-01

Field placement within teacher education represents a topic of interest for all preservice teacher programs. Present research addresses a set of important questions regarding field placement: (1) What pedagogical methodologies facilitate deep learning during field experiences? (2) Is there a significant difference in treatment effect for…
Parental Divorce and Child Mental Health Trajectories

ERIC Educational Resources Information Center

Strohschein, Lisa

2005-01-01

A process-oriented approach to parental divorce locates the experience within the social and developmental context of children's lives, providing greater insight into how parental divorce produces vulnerability in some children and resiliency in others. The current study involves prospectively tracking a nationally representative sample of…
SOLVENT-BASED TO WATERBASED ADHESIVE-COATED SUBSTRATE RETROFIT - VOLUME I: COMPARATIVE ANALYSIS

EPA Science Inventory

This volume represents the analysis of case study facilities' experience with waterbased adhesive use and retrofit requirements. (NOTE: The coated and laminated substrate manufacturing industry was selected as part of NRMRL'S support of the 33/50 Program because of its significan...
Consumer reaction to call boxes on the Dulles toll road in Virginia

DOT National Transportation Integrated Search

2001-06-01

This study represents the first part of an assessment of consumer reactions to the introduction of call boxes on the Dulles Toll Road (Northern Virginia). It initially looks at the existing experiences with call boxes in the US. Despite their adoptio...
Rationalizing Neglect: An Institutional Response to Transfer Students

ERIC Educational Resources Information Center

Tobolowsky, Barbara F.; Cox, Bradley E.

2012-01-01

This qualitative study focuses on institutional efforts affecting the transfer student experience at a single research institution. Findings based on interviews with institutional representatives, both faculty and staff, using the rational, natural, and open system perspectives of organizational theory, provide insights into the institutional…
Impact damage resistance of composite fuselage structure, part 1

NASA Technical Reports Server (NTRS)

Dost, E. F.; Avery, W. B.; Ilcewicz, L. B.; Grande, D. H.; Coxon, B. R.

1992-01-01

The impact damage resistance of laminated composite transport aircraft fuselage structures was studied experimentally. A statistically based designed experiment was used to examine numerous material, laminate, structural, and extrinsic (e.g., impactor type) variables. The relative importance and quantitative measure of the effect of each variable and variable interactions on responses including impactor dynamic response, visibility, and internal damage state were determined. The study utilized 32 three-stiffener panels, each with a unique combination of material type, material forms, and structural geometry. Two manufacturing techniques, tow placement and tape lamination, were used to build panels representative of potential fuselage crown, keel, and lower side-panel designs. Various combinations of impactor variables representing various foreign-object-impact threats to the aircraft were examined. Impacts performed at different structural locations within each panel (e.g., skin midbay, stiffener attaching flange, etc.) were considered separate parallel experiments. The relationship between input variables, measured damage states, and structural response to this damage are presented including recommendations for materials and impact test methods for fuselage structure.
Content Creators and Language Learners: Exploring Web 2.0 and Wikis

ERIC Educational Resources Information Center

Craig, Dorothy Valcarcel

2013-01-01

This qualitative study examined the use of Wikis and blogs among graduate students in an online class that was part of a teacher preparation program in English as a Second Language. Participants included practicing teachers and graduate assistants who represented a variety of learning environments and experiences. The study was framed by a set of…
Linking Welfare and Education. A Study of New Programs in Five States. Papers for Practitioners.

ERIC Educational Resources Information Center

Pauly, Edward; And Others

A study aimed to provide education and welfare officials with information on the experiences of welfare/education programs as they had been implemented in five states. The states (California, Florida, Ohio, Oklahoma, and Wisconsin) represented a range of noteworthy approaches to providing education to welfare recipients, including some dramatic…
"Speaking English Naturally": The Language Ideologies of English as an Official Language at a Korean University

ERIC Educational Resources Information Center

Choi, Jinsook

2016-01-01

This study explores language ideologies of English at a Korean university where English has been adopted as an official language. This study draws on ethnographic data in order to understand how speakers respond to and experience the institutional language policy. The findings show that language ideologies in this university represent the…
Absenteeism in Head Start and Children's Academic Learning

ERIC Educational Resources Information Center

Ansari, Arya; Purtell, Kelly

2016-01-01

Using nationally representative data from the Family and Child Experiences Survey 2009 Cohort (n = 2,842), this study examined the implications of 3- and 4-year-old's absences from Head Start for their early academic learning. The findings from this study revealed that children who missed more days of school, and especially those who were…
Women's Satisfaction in the Superintendency: A Mixed Methods Study

ERIC Educational Resources Information Center

Bollinger, Alisha A.; Grady, Marilyn L.

2018-01-01

The purpose of this study was to examine the experiences of female superintendents as they relate to job satisfaction and retention. State department of education websites were consulted to obtain the number of women superintendents by state for 2015. From the list, 3,364 women superintendents were identified. The women represent 25% of U.S.…
"Women Made It a Home": Representations of Women in Social Studies

ERIC Educational Resources Information Center

Schmeichel, Mardi

2014-01-01

This article explores recently published P-12 social studies lesson plans that include women to examine how attending to women is "getting done" in the field and how the lessons represent women and women's experiences. Using discourse analysis methodologies, the author demonstrates that women have been included as topics in ways that do…

Abused Women's Perspectives on the Criminal Justice System's Response to Domestic Violence

ERIC Educational Resources Information Center

Barata, Paula C.

2007-01-01

This study used Q methodology to better understand battered women's views about the criminal justice system (CJS). Fifty-eight abused and formerly abused women, representing a broad range of experiences, were involved in the study. Participants sorted 72 statements about domestic violence and the CJS according to how strongly they agreed with each…
A National Study of LGBT Educators' Perceptions of Their Workplace Climate

ERIC Educational Resources Information Center

Smith, Nancy J.; Wright, Tiffany; Reilly, Cole; Esposito, Jennifer

2008-01-01

The objective for this study was to investigate lesbian, gay, bisexual and transgender (LGBT) educators' perceptions of their workplace climate, the community in which they teach our nation's youth. The survey was posted on Survey Monkey between April 1 and June 30, 2007, to represent the perceptions of LGBT educators' experiences during the…
(Re)constructing and (Re)presenting Heritage: Education and Representation in an American Indian Homeland Preservation Project

ERIC Educational Resources Information Center

Graybeal, Lesley Marie

2011-01-01

Experiences of the Occaneechi Band of the Saponi Nation (Occaneechi) in constructing a heritage revitalization initiative known as the Homeland Preservation Project and organizing related educational programming were analyzed through an ethnographic case study. The purpose of the study was to understand the importance of the heritage museum as a…
How Urban Fathers Represent the Transition to Fathering: A Discourse Analysis of Fathering Narratives.

ERIC Educational Resources Information Center

Gadsden, Vivian; Wortham, Stanton; Wojcik, Teresa

Noting that researchers rarely ask urban fathers about their perspectives and choices regarding fatherhood, this pilot study examined the experiences of urban fathers, focusing on their views of the challenges of fatherhood and how they accounted for both their irresponsible and their promising fathering behaviors; the study's larger goal will be…
Cross-Cultural Practices in Art Education: The Art Lunch Project in Turkey

ERIC Educational Resources Information Center

Acer, Dilek

2012-01-01

This article presents a selective review of the literature on cross-cultural art studies, with the aim of identifying their commonalities. The article includes a specific cross-cultural case study, the Art Lunch Project, which the author attended as a representative of Turkey, that aims to exchange practical teaching experiences. The participants…
The Relationship between Teacher Leadership Style and Years of Experience, Certification Type and Self-Efficacy

ERIC Educational Resources Information Center

Prescott, Kara L.

2013-01-01

The purpose of this study was to research the gap between teachers and leadership. There is a disconnection in addressing characteristics that are represented by the transformational, transactional, or laissez-faire teacher leaders. This study was focused on teachers and the type of leadership they are more inclined to display (transformational,…
The Knower and the Known: Exploring Issues of Violence against Women in Popular Music.

ERIC Educational Resources Information Center

Brunner, Diane

In studying the lyrics of popular music, and particularly aspects of violent attitudes toward women, teachers discover what language represents to students and what students experience through the songs. The texts created about artifacts like song lyrics suggest more about the students as knowers than about the objects being studied. Exploring…
THE ROLE AND DISTRIBUTION OF WRITTEN INFORMAL COMMUNICATION IN THEORETICAL HIGH ENERGY PHYSICS.

ERIC Educational Resources Information Center

LIBBEY, MILES A.; ZALTMAN, GERALD

THIS STUDY OF "PREPRINT" DISTRIBUTION IN THEORECTICAL HIGH ENERGY PHYSICS USED A QUESTIONNAIRE CIRCULATED TO ALL KNOWN HIGH ENERGY THEORISTS. A SECOND QUESTIONNAIRE WAS SENT TO A REPRESENTATIVE SAMPLE OF "PREPRINT LIBRARIANS" AT VARIOUS INSTITUTIONS IN THE U.S. AND ABROAD. BASED ON THIS DATA, THE STUDY CONCLUDED THAT AN EXPERIMENT WITH CENTRALIZED…
Understanding Student Satisfaction and Dissatisfaction: An Interpretive Study in the UK Higher Education Context

ERIC Educational Resources Information Center

Douglas, Jacqueline Ann; Douglas, Alexander; McClelland, Robert James; Davies, John

2015-01-01

This article represents a cross-sectional study of undergraduate students across two north-west university business schools in the UK. A purposefully designed questionnaire was collected from 350 students. The student experience was described in the form of hand-written narratives by first and final year students and had been identified by the…
"A Prophecy for the Arts" in Higher Education

ERIC Educational Resources Information Center

Merrion, Margaret

2009-01-01

This article presents a Delphi study that captured a myriad of predictions that represent the best thinking of a panel of creative minds, experts in a variety of arts and with many years of experience as arts leaders. Predictions provide a set of interlinked challenges and opportunities. In this study, the experts forecast changes in students that…
Bridging Marketing Theory and Practice for Consumer Behaviour Master's Students: A Case Study from Sweden

ERIC Educational Resources Information Center

Sundstrom, Malin; Hagberg, Johan

2010-01-01

This paper describes the planning, implementation and outcome of a graduate-level consumer behaviour course taught in autumn 2008 at the University of Boras in Sweden. The course was jointly developed by marketing academics and business representatives in order to combine research-oriented studies with practical experience in a retail context. The…
Individual's Patterns of Commitment, Resilience and Subjective Well-Being of Prospective Physical Education Teachers

ERIC Educational Resources Information Center

Fischer, Britta; Bisterfeld, Miriam; Staab, Oliver

2018-01-01

To a greater or lesser extent, specific combinations of commitment, resilience and subjective well-being represent favorable individual resources in order to cope with professional demands. Prior studies have identified different patterns of these behaviors and experiences. The present study deals with the question whether these patterns are also…
Effects of Cooperative Writing with Embedded Multimedia: A Randomized Experiment

ERIC Educational Resources Information Center

Madden, Nancy A.; Slavin, Robert E.; Logan, Michele

2011-01-01

The present study represented an effort to improve on the outcomes of the Puma (2006) study by creating a writing process program that provided students with compelling video models of effective writing practices in small writing teams. In this method, called Writing Wings with Media (WWM), students worked in 4-member, heterogeneous writing groups…
Fire research issue.

Treesearch

Richard E. McArdle; Donald N. Matthews

1934-01-01

This number of Forest Research Motes is primarily for the forest fire protectionist. It consists of a number of very short articles, each of which gives the essence of the results of a study made recently by this Forest Experiment Station. These so-called fire studies which are represented herein by brief fragments are all part of an organized research program, having...
Chaotic Experiences and Low-Income Children’s Social-Emotional Development

PubMed Central

Bobbitt, Kaeley C.; Gershoff, Elizabeth T.

2016-01-01

Development in early childhood is increasingly likely to take place in multiple contexts. Continuity and discontinuity in children’s experiences across multiple contexts have important implications for their development. This study examines the extent to which children experience chaos in their homes and in their preschool settings is linked with their social-emotional development over the course of the preschool year. Data from a large, representative sample of low-income preschool children attending Head Start was used to test a series of multi-level models. Children whose experiences of their homes were highly chaotic, regardless of the how chaotic their experiences of their classroom were, decreased in their social-emotional skills over the preschool year. Chaotic experiences in the home environment thus appear to have more influence on children’s development than do chaotic preschool experiences. PMID:28435178
Achieving "organic compositionality" through self-organization: reviews on brain-inspired robotics experiments.

PubMed

Tani, Jun; Nishimoto, Ryunosuke; Paine, Rainer W

2008-05-01

The current paper examines how compositional structures can self-organize in given neuro-dynamical systems when robot agents are forced to learn multiple goal-directed behaviors simultaneously. Firstly, we propose a basic model accounting for the roles of parietal-premotor interactions for representing skills for goal-directed behaviors. The basic model had been implemented in a set of robotics experiments employing different neural network architectures. The comparative reviews among those experimental results address the issues of local vs distributed representations in representing behavior and the effectiveness of level structures associated with different sensory-motor articulation mechanisms. It is concluded that the compositional structures can be acquired "organically" by achieving generalization in learning and by capturing the contextual nature of skilled behaviors under specific conditions. Furthermore, the paper discusses possible feedback for empirical neuroscience studies in the future.
Decoding power-spectral profiles from FMRI brain activities during naturalistic auditory experience.

PubMed

Hu, Xintao; Guo, Lei; Han, Junwei; Liu, Tianming

2017-02-01

Recent studies have demonstrated a close relationship between computational acoustic features and neural brain activities, and have largely advanced our understanding of auditory information processing in the human brain. Along this line, we proposed a multidisciplinary study to examine whether power spectral density (PSD) profiles can be decoded from brain activities during naturalistic auditory experience. The study was performed on a high resolution functional magnetic resonance imaging (fMRI) dataset acquired when participants freely listened to the audio-description of the movie "Forrest Gump". Representative PSD profiles existing in the audio-movie were identified by clustering the audio samples according to their PSD descriptors. Support vector machine (SVM) classifiers were trained to differentiate the representative PSD profiles using corresponding fMRI brain activities. Based on PSD profile decoding, we explored how the neural decodability correlated to power intensity and frequency deviants. Our experimental results demonstrated that PSD profiles can be reliably decoded from brain activities. We also suggested a sigmoidal relationship between the neural decodability and power intensity deviants of PSD profiles. Our study in addition substantiates the feasibility and advantage of naturalistic paradigm for studying neural encoding of complex auditory information.
Understanding the Relationship between Rainstorm-Related Experiences and PTSD among Chinese Adolescents after Rainstorm Disaster: The Roles of Rumination and Social Support.

PubMed

Zhen, Rui; Quan, Lijuan; Yao, Benxian; Zhou, Xiao

2016-01-01

Posttraumatic stress disorder (PTSD) is prevalent among adolescents following natural disasters, and the trauma experiences represent a critical risk factor for PTSD. Nevertheless, the underlying mechanism of adolescents' PTSD following trauma experiences remains unclear. Rumination appears to be a mediating factor between trauma experiences and PTSD, and social support may moderate this mediating relationship between trauma experiences, rumination, and PTSD, but few studies have examined these assumptions. Thus, this study aimed to assess the mediating role of rumination and the moderating role of social support in the relationship between rainstorm-related experiences and PTSD among adolescents, following a rainstorm in China. Nine hundred and fifty-one middle school students completed self-report questionnaires, and structural equation modeling was conducted to examine the potential moderated mediation effect. Rainstorm-related experiences had a direct and positive effect on PTSD, and also indirectly influenced PTSD via rumination. Moreover, social support work to buffer the direct effect of rainstorm-related experiences on PTSD, but not the effect of rumination on PTSD. Implications for clinical practice and research are discussed along with study limitations.
Understanding the Relationship between Rainstorm-Related Experiences and PTSD among Chinese Adolescents after Rainstorm Disaster: The Roles of Rumination and Social Support

PubMed Central

Zhen, Rui; Quan, Lijuan; Yao, Benxian; Zhou, Xiao

2016-01-01

Posttraumatic stress disorder (PTSD) is prevalent among adolescents following natural disasters, and the trauma experiences represent a critical risk factor for PTSD. Nevertheless, the underlying mechanism of adolescents’ PTSD following trauma experiences remains unclear. Rumination appears to be a mediating factor between trauma experiences and PTSD, and social support may moderate this mediating relationship between trauma experiences, rumination, and PTSD, but few studies have examined these assumptions. Thus, this study aimed to assess the mediating role of rumination and the moderating role of social support in the relationship between rainstorm-related experiences and PTSD among adolescents, following a rainstorm in China. Nine hundred and fifty-one middle school students completed self-report questionnaires, and structural equation modeling was conducted to examine the potential moderated mediation effect. Rainstorm-related experiences had a direct and positive effect on PTSD, and also indirectly influenced PTSD via rumination. Moreover, social support work to buffer the direct effect of rainstorm-related experiences on PTSD, but not the effect of rumination on PTSD. Implications for clinical practice and research are discussed along with study limitations. PMID:27695436
The mothers' experiences in the pediatrics hemodialysis unit.

PubMed

Mieto, Fernanda Stella Risseto; Bousso, Regina Szylit

2014-01-01

The need for hemodialysis exerts a deep impact on the lives of children and adolescents with end-stage kidney chronic failure and their mothers, who predominantly assume the care related to treatment. The hemodialysis requires that the mother accompanies the child during sessions at least three times a week and, since it is not a healing practice, they also experience the waiting for a kidney transplant, attributing different meanings to this experience. To understand what it means for the mothers to accompany the child in a Pediatric Hemodialysis Unit and to construct a theoretical model representing this experience. The Symbolic Interactionism was adopted as a theoretical model and the Grounded Theory as a methodological framework. Data were collected through interviews with 11 mothers. The comparative analysis of the data enabled the identification of two phenomena that compose the experience: "Seeing the child´s life being sucked by the hemodialysis machine" expresses the experiences of the mothers that generates new demands to comprehend the new health conditions of their children and "Giving new meaning to the dependence of the hemodialysis machine" that represents the strategies employed to endure the experience. The relationship of these phenomena allowed the identification of the main category: "Having the mother's life imprisoned by the hemodialysis machine", from which we propose a new theoretical model. The results of the study allow us to provide a theoretical ground for planning an assistance that meets the real needs of the mothers, identifying aspects that require intervention.

Local and Remote Cooperation With Virtual and Robotic Agents: A P300 BCI Study in Healthy and People Living With Spinal Cord Injury.

PubMed

Tidoni, Emmanuele; Abu-Alqumsan, Mohammad; Leonardis, Daniele; Kapeller, Christoph; Fusco, Gabriele; Guger, Cristoph; Hintermuller, Cristoph; Peer, Angelika; Frisoli, Antonio; Tecchia, Franco; Bergamasco, Massimo; Aglioti, Salvatore Maria

2017-09-01

The development of technological applications that allow people to control and embody external devices within social interaction settings represents a major goal for current and future brain-computer interface (BCI) systems. Prior research has suggested that embodied systems may ameliorate BCI end-user's experience and accuracy in controlling external devices. Along these lines, we developed an immersive P300-based BCI application with a head-mounted display for virtual-local and robotic-remote social interactions and explored in a group of healthy participants the role of proprioceptive feedback in the control of a virtual surrogate (Study 1). Moreover, we compared the performance of a small group of people with spinal cord injury (SCI) to a control group of healthy subjects during virtual and robotic social interactions (Study 2), where both groups received a proprioceptive stimulation. Our attempt to combine immersive environments, BCI technologies and neuroscience of body ownership suggests that providing realistic multisensory feedback still represents a challenge. Results have shown that healthy and people living with SCI used the BCI within the immersive scenarios with good levels of performance (as indexed by task accuracy, optimizations calls and Information Transfer Rate) and perceived control of the surrogates. Proprioceptive feedback did not contribute to alter performance measures and body ownership sensations. Further studies are necessary to test whether sensorimotor experience represents an opportunity to improve the use of future embodied BCI applications.
"So Happy I Could Shout!" and "So Happy I Could Cry!" Dimorphous expressions represent and communicate motivational aspects of positive emotions.

PubMed

Aragón, Oriana R; Bargh, John A

2018-03-01

Happiness can be expressed through smiles. Happiness can also be expressed through physical displays that without context, would appear to be sadness (tears, downward turned mouths, and crumpled body postures) and anger (clenched jaws, snarled lips, furrowed brows, and pumped fists). These seemingly incongruent displays of happiness, termed dimorphous expressions, we propose, represent and communicate expressers' motivational orientations. When participants reported their own aggressive expressions in positive or negative contexts, their expressions represented positive or negative emotional experiences respectively, imbued with appetitive orientations (feelings of wanting to go). In contrast, reported sad expressions, in positive or negative contexts, represented positive and negative emotional experiences respectively, imbued with consummatory orientations (feelings of wanting to pause). In six additional experiments, participant observers interpreted that aggression displayed in positive contexts signalled happy-appetitive states, and sadness displayed in positive contexts signalled happy-consummatory states. Implications for the production and interpretation of emotion expressions are discussed.
Selective incivility: immigrant groups experience subtle workplace discrimination at different rates.

PubMed

Krings, Franciska; Johnston, Claire; Binggeli, Steve; Maggiori, Christian

2014-10-01

Immigrants play an increasingly important role in local labor markets. Not only do they grow steadily in number but also in cultural, educational, and skill diversity, underlining the necessity to distinguish between immigrant groups when studying discrimination against immigrants. We examined immigrant employees' subtle discrimination experiences in a representative sample in Switzerland, controlling for dispositional influences. Results showed that mainly members of highly competitive immigrant groups, from immediate neighbor countries, experienced workplace incivility and that these incivility experiences were related to higher likelihoods of perceived discrimination at work. This research confirms recent accounts that successful but disliked groups are particularly likely to experience subtle interpersonal discrimination. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
[Neurotheology: neurobiological models of religious experience].

PubMed

Passie, T; Warncke, J; Peschel, T; Ott, U

2013-03-01

Religions are evolutionary selected social and cultural phenomena. They represent today belief and normative systems on which the main parts of our culture are based. For a long time religions have been seen as mainly originating from a spectrum of religious experiences. These include a broad spectrum of experiences and are astonishingly widespread in the population. The most consistent and transculturally uniform religious experiences are the mystical experiences. Only these (and the prayer experience) have factually been researched in detail neurobiologically. This article presents a review of empirical results and hypothetical approaches to explain mystical religious experiences neurobiologically. Some of the explanatory hypotheses possess logical evidence, some are even supported by neurobiological studies, but all of them have their pitfalls and are at best partially consistent. One important insight from the evidence reviewed here is that there may be a whole array of different neurophysiological conditions which may result in the same core religious mystical experiences.
SCORPI and SCORPI-T: Neurophysiological experiments on animals in space

NASA Astrophysics Data System (ADS)

Serafini, L.; Ramacciotti, T.; Vigano, W.; Donati, A.; Porciani, M.; Zolesi, V.; Schulze-Varnholt, D.; Manieri, P.; El-Din Sallam, A.; Schmah, M.; Horn, E. R.

2005-08-01

The study of physiological adaptation to long-term space flights with special consideration of the internal clock systems of scorpions is the goal of the SCORPI and SCORPI-T experiments. SCORPI was selected for flight on the International Space Station (ISS) and will be mounted in the European facility BIOLAB, the ESA laboratory designed to support biological experiments on micro-organisms, cells, tissue, cultures, small plants and small invertebrates. SCORPI-T experiment, performed on the Russian FOTON-M2 satellite in May-June 2005, represents an important precursor for the success of the experiment SCORPI on BIOLAB. This paper outlines the main features of the hardware designed and developed in order to allow the analysis of critical aspects of experiment execution and the verification of experiment objectives. The capabilities of the hardware developed for SCORPI and SCORPI-T show its potential use for any future similar type of experiments in space.
Discourse Memory and Reading Comprehension Skill

ERIC Educational Resources Information Center

Perfetti, Charles A.; Goldman, Susan R.

1976-01-01

A study is reported in which short-term memory capacity, estimated by a probe digit task, and memory for structured language, measured by a probe discourse task, were investigated in an experiment with third and fifth grade IQ-matched children representing two levels of reading comprehension skill. (Author/RM)
Consumer and Family Perspectives on the Meaning of Work.

ERIC Educational Resources Information Center

Fesko, Sheila; Freedman, Ruth

1995-01-01

This qualitative study examined the perspectives of people with significant disabilities (N=23) and their family members about their overall employment experiences, outcomes, and expectations. Four focus groups were convened, two groups of people with significant disabilities and two groups of family members. Disabilities represented included…
THE WARRIOR DROPOUTS.

ERIC Educational Resources Information Center

WAX, ROSALIE H.

THE AMERICAN INDIAN SUBCULTURE, AS REPRESENTED IN THIS STUDY BY THE SIOUX OF THE PINE RIDGE RESERVATION IN SOUTH DAKOTA, EXPERIENCES PROBLEMS WITH ITS YOUTHS' BECOMING HIGH SCHOOL DROPOUTS. MANY OF THE REASONS FOR THIS PROBLEM PARALLEL THE PROBLEMS OF OTHER AMERICAN MINORITIES, NAMELY, (1) DISSIMILARITY BETWEEN THE VALUES OF THE MINORITY…
Identifying Effective Psychological Treatments of Insomnia: A Meta-Analysis.

ERIC Educational Resources Information Center

Murtagh, Douglas R. R.; Greenwood, Kenneth M.

1995-01-01

Clarified efficacy of psychological treatments for insomnia through a meta-analysis of 66 outcome studies representing 139 treatment groups. Psychological treatments produced considerable enhancement of both sleep patterns and the subjective experience of sleep. Participants who were clinically referred and who did not regularly use sedatives…
Using What Matters to Students in Bilingual Mathematics Problems

ERIC Educational Resources Information Center

Dominguez, Higinio

2011-01-01

In this study, the author represented what matters to bilingual students in their everyday lives--namely bilingualism and everyday experiences--in school-based mathematical problems. Solving problems in pairs, students demonstrated different patterns of organizing and coordinating talk across problem contexts and across languages. Because these…
Cross-Cultural Analysis of E-Mail Reference

ERIC Educational Resources Information Center

Shachaf, Pnina; Meho, Lokman I.; Hara, Noriko

2007-01-01

Studies that examined virtual reference and its potential for collaboration have by and large represented experiences in western English-speaking countries. This article reports the results of a three-nation (Israel, Japan, and Lebanon) comparative analysis to bridge this research gap. Similarities and differences between these countries highlight…
Women's Careers and Transitions: A Collective Case Study of Leaders Who Took a Career Break to Be Stay-at-Home Mothers

ERIC Educational Resources Information Center

Webster, Janet Swanson

2010-01-01

This interpretive collective case study sought to fully understand and describe the experience of women leaders who took a career break to be stay-at-home mothers. Five women leaders representing a variety of industries and leadership roles participated in the study. Multiple methods were used to collect data with participant interviews being the…
Preschool: First Findings from the Preschool Follow-Up of the Early Childhood Longitudinal Study, Birth Cohort (ECLS-B). First Look. NCES 2008-025

ERIC Educational Resources Information Center

Chernoff, Jodi Jacobson; Flanagan, Kristin Denton; McPhee, Cameron; Park, Jennifer

2007-01-01

The Early Childhood Longitudinal Study, Birth Cohort (ECLS-B) is designed to provide detailed information on children's development, health, and early learning experiences in the years leading up to entry into school. The ECLS-B is the first nationally representative study within the United States to directly assess children's early mental and…
An Investigative Study into Perspectives and Experiences of Incubates at the Chandaria Business Innovation and Incubation Centre at the Kenyatta University

ERIC Educational Resources Information Center

Munyanyiwa, Takaruza; Mutsau, Morgen; Rudhumbu, Norman; Svotwa, Douglas

2016-01-01

The study presents results from an investigative study undertaken at the Kenyatta University (KU) Chandaria Business Innovation and Incubation Centre. A total of 10 incubates representing 10 projects were engaged in face to face interviews. The incubates were appreciative of the value that incubation centre such as the one at KU contributed to…
Laboratory experiment on the 3D tide-induced Lagrangian residual current using the PIV technique

NASA Astrophysics Data System (ADS)

Chen, Yang; Jiang, Wensheng; Chen, Xu; Wang, Tao; Bian, Changwei

2017-12-01

The 3D structure of the tide-induced Lagrangian residual current was studied using the particle image velocimetry (PIV) technique in a long shallow narrow tank in the laboratory. At the mouth of the tank, a wave generator was used to make periodic wave which represents the tide movement, and at the head of the tank, a laterally sloping topography with the length of one fifth of the water tank was installed, above which the tide-induced Lagrangian residual current was studied. Under the weakly nonlinear condition in the present experiment setup, the results show that the Lagrangian residual velocity (LRV) field has a three-layer structure. The residual current flows inwards (towards the head) in the bottom layer and flows outwards in the middle layer, while in the surface layer, it flows inwards along the shallow side of the sloping topography and outwards along the deep side. The depth-averaged and breadth-averaged LRV are also analyzed based on the 3D LRV observations. Our results are in good agreement with the previous experiment studies, the analytical solutions with similar conditions and the observational results in real bays. Moreover, the volume flux comparison between the Lagrangian and Eulerian residual currents shows that the Eulerian residual velocity violates the mass conservation law while the LRV truly represents the inter-tidal water transport. This work enriches the laboratory studies of the LRV and offers valuable references for the LRV studies in real bays.
Partial Gravity Biological Tether Experiment on the Deep Space Gateway

NASA Astrophysics Data System (ADS)

Wallace, S.; Graham, L.

2018-02-01

A tether-based partial gravity bacterial biological experiment represents a viable biological experiment to investigate the fundamental internal cellular processes between altered levels of gravity and cellular adaption.
Distorted neutrino oscillations from time varying cosmic fields

DOE PAGES

Krnjaic, Gordan; Machado, Pedro A. N.; Necib, Lina

2018-04-16

Cold, ultralight (more » $$\\ll$$ eV) bosonic fields can induce fast temporal variation in neutrino couplings, thereby distorting neutrino oscillations. In this paper, we exploit this effect to introduce a novel probe of neutrino time variation and dark matter at long-baseline experiments. We study several representative observables and find that current and future experiments, including DUNE and JUNO, are sensitive to a wide range of model parameters over many decades in mass reach and time-variation periodicity.« less
Padalka collects medical data for the Cardiocog experiment onboard the SM during Expedition 9

NASA Image and Video Library

2004-07-05

ISS009-E-13739 (5 July 2004) --- Cosmonaut Gennady I. Padalka, Expedition 9 commander representing Russias Federal Space Agency, works with the Cardiocog experiment in the Zvezda Service Module of the International Space Station (ISS). Originally part of Pedro Duque's VC5 "Cervantes" science program, Cardiocog studies changes in the human cardiovascular system in micro-G, expressed in the peripheral arteries, and the vegetative regulation of arterial blood pressure and heart rate.
Distorted neutrino oscillations from time varying cosmic fields

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

Krnjaic, Gordan; Machado, Pedro A. N.; Necib, Lina

Cold, ultralight (more » $$\\ll$$ eV) bosonic fields can induce fast temporal variation in neutrino couplings, thereby distorting neutrino oscillations. In this paper, we exploit this effect to introduce a novel probe of neutrino time variation and dark matter at long-baseline experiments. We study several representative observables and find that current and future experiments, including DUNE and JUNO, are sensitive to a wide range of model parameters over many decades in mass reach and time-variation periodicity.« less
Object Lessons: A Cultural Genealogy of the Dunce Cap and the Apple as Visual Tropes of American Education

ERIC Educational Resources Information Center

Weaver, Heather A.

2012-01-01

When we look in depth at how the experience of education was represented in American culture, we find evidence of visual tropes representing evolving but persistent aspects of the experience of schooling, such as the performance of judgement, and the desire to know the world. These tropes were rendered in terms of pictorial conventions that went…

Automatic Shifts of Attention in the Dimensional Change Card Sort Task: Subtle Changes in Task Materials Lead to Flexible Switching

ERIC Educational Resources Information Center

Fisher, Anna V.

2011-01-01

Two experiments tested a hypothesis that reducing demands on executive control in a Dimensional Change Card Sort task will lead to improved performance in 3-year-olds. In Experiment 1, the shape dimension was represented by two dissimilar values ("stars" and "flowers"), and the color dimension was represented by two similar values ("red" and…
How low can you go? Changing the resolution of novel complex objects in visual working memory according to task demands

PubMed Central

Allon, Ayala S.; Balaban, Halely; Luria, Roy

2014-01-01

In three experiments we manipulated the resolution of novel complex objects in visual working memory (WM) by changing task demands. Previous studies that investigated the trade-off between quantity and resolution in visual WM yielded mixed results for simple familiar stimuli. We used the contralateral delay activity as an electrophysiological marker to directly track the deployment of visual WM resources while participants preformed a change-detection task. Across three experiments we presented the same novel complex items but changed the task demands. In Experiment 1 we induced a medium resolution task by using change trials in which a random polygon changed to a different type of polygon and replicated previous findings showing that novel complex objects are represented with higher resolution relative to simple familiar objects. In Experiment 2 we induced a low resolution task that required distinguishing between polygons and other types of stimulus categories, but we failed in finding a corresponding decrease in the resolution of the represented item. Finally, in Experiment 3 we induced a high resolution task that required discriminating between highly similar polygons with somewhat different contours. This time, we observed an increase in the item’s resolution. Our findings indicate that the resolution for novel complex objects can be increased but not decreased according to task demands, suggesting that minimal resolution is required in order to maintain these items in visual WM. These findings support studies claiming that capacity and resolution in visual WM reflect different mechanisms. PMID:24734026
Shared Etiology of Psychotic Experiences and Depressive Symptoms in Adolescence: A Longitudinal Twin Study

PubMed Central

Eley, Thalia C.; McGuire, Philip; Plomin, Robert; Cardno, Alastair G.; Freeman, Daniel; Ronald, Angelica

2016-01-01

Psychotic disorders and major depression, both typically adult-onset conditions, often co-occur. At younger ages psychotic experiences and depressive symptoms are often reported in the community. We used a genetically sensitive longitudinal design to investigate the relationship between psychotic experiences and depressive symptoms in adolescence. A representative community sample of twins from England and Wales was employed. Self-rated depressive symptoms, paranoia, hallucinations, cognitive disorganization, grandiosity, anhedonia, and parent-rated negative symptoms were collected when the twins were age 16 (N = 9618) and again on a representative subsample 9 months later (N = 2873). Direction and aetiology of associations were assessed using genetically informative cross-lagged models. Depressive symptoms were moderately correlated with paranoia, hallucinations, and cognitive disorganization. Lower correlations were observed between depression and anhedonia, and depression and parent-rated negative symptoms. Nonsignificant correlations were observed between depression and grandiosity. Largely the same genetic effects influenced depression and paranoia, depression and hallucinations, and depression and cognitive disorganization. Modest overlap in environmental influences also played a role in the associations. Significant bi-directional longitudinal associations were observed between depression and paranoia. Hallucinations and cognitive disorganization during adolescence were found to impact later depression, even after controlling for earlier levels of depression. Our study shows that psychotic experiences and depression, as traits in the community, have a high genetic overlap in mid-adolescence. Future research should test the prediction stemming from our longitudinal results, namely that reducing or ameliorating positive and cognitive psychotic experiences in adolescence would decrease later depressive symptoms. PMID:26994398
Close interpersonal proximity modulates visuomotor processing of object affordances in shared, social space.

PubMed

Saccone, Elizabeth J; Szpak, Ancret; Churches, Owen; Nicholls, Michael E R

2018-01-01

Research suggests that the human brain codes manipulable objects as possibilities for action, or affordances, particularly objects close to the body. Near-body space is not only a zone for body-environment interaction but also is socially relevant, as we are driven to preserve our near-body, personal space from others. The current, novel study investigated how close proximity of a stranger modulates visuomotor processing of object affordances in shared, social space. Participants performed a behavioural object recognition task both alone and with a human confederate. All object images were in participants' reachable space but appeared relatively closer to the participant or the confederate. Results revealed when participants were alone, objects in both locations produced an affordance congruency effect but when the confederate was present, only objects nearer the participant elicited the effect. Findings suggest space is divided between strangers to preserve independent near-body space boundaries, and in turn this process influences motor coding for stimuli within that social space. To demonstrate that this visuomotor modulation represents a social phenomenon, rather than a general, attentional effect, two subsequent experiments employed nonhuman joint conditions. Neither a small, Japanese, waving cat statue (Experiment 2) nor a metronome (Experiment 3) modulated the affordance effect as in Experiment 1. These findings suggest a truly social explanation of the key interaction from Experiment 1. This study represents an important step toward understanding object affordance processing in real-world, social contexts and has implications broadly across fields of social action and cognition, and body space representation.
Evidence That a Psychopathology Interactome Has Diagnostic Value, Predicting Clinical Needs: An Experience Sampling Study

PubMed Central

van Os, Jim; Lataster, Tineke; Delespaul, Philippe; Wichers, Marieke; Myin-Germeys, Inez

2014-01-01

Background For the purpose of diagnosis, psychopathology can be represented as categories of mental disorder, symptom dimensions or symptom networks. Also, psychopathology can be assessed at different levels of temporal resolution (monthly episodes, daily fluctuating symptoms, momentary fluctuating mental states). We tested the diagnostic value, in terms of prediction of treatment needs, of the combination of symptom networks and momentary assessment level. Method Fifty-seven patients with a psychotic disorder participated in an ESM study, capturing psychotic experiences, emotions and circumstances at 10 semi-random moments in the flow of daily life over a period of 6 days. Symptoms were assessed by interview with the Positive and Negative Syndrome Scale (PANSS); treatment needs were assessed using the Camberwell Assessment of Need (CAN). Results Psychotic symptoms assessed with the PANSS (Clinical Psychotic Symptoms) were strongly associated with psychotic experiences assessed with ESM (Momentary Psychotic Experiences). However, the degree to which Momentary Psychotic Experiences manifested as Clinical Psychotic Symptoms was determined by level of momentary negative affect (higher levels increasing probability of Momentary Psychotic Experiences manifesting as Clinical Psychotic Symptoms), momentary positive affect (higher levels decreasing probability of Clinical Psychotic Symptoms), greater persistence of Momentary Psychotic Experiences (persistence predicting increased probability of Clinical Psychotic Symptoms) and momentary environmental stress associated with events and activities (higher levels increasing probability of Clinical Psychotic Symptoms). Similarly, the degree to which momentary visual or auditory hallucinations manifested as Clinical Psychotic Symptoms was strongly contingent on the level of accompanying momentary paranoid delusional ideation. Momentary Psychotic Experiences were associated with CAN unmet treatment needs, over and above PANSS measures of psychopathology, similarly moderated by momentary interactions with emotions and context. Conclusion The results suggest that psychopathology, represented as an interactome at the momentary level of temporal resolution, is informative in diagnosing clinical needs, over and above traditional symptom measures. PMID:24466189
Is This Real Life? Is This Just Fantasy?: Realism and Representations in Learning with Technology

NASA Astrophysics Data System (ADS)

Sauter, Megan Patrice

Students often engage in hands-on activities during science learning; however, financial and practical constraints often limit the availability of these activities. Recent advances in technology have led to increases in the use of simulations and remote labs, which attempt to recreate hands-on science learning via computer. Remote labs and simulations are interesting from a cognitive perspective because they allow for different relations between representations and their referents. Remote labs are unique in that they provide a yoked representation, meaning that the representation of the lab on the computer screen is actually linked to that which it represents: a real scientific device. Simulations merely represent the lab and are not connected to any real scientific devices. However, the type of visual representations used in the lab may modify the effects of the lab technology. The purpose of this dissertation is to examine the relation between representation and technology and its effects of students' psychological experiences using online science labs. Undergraduates participated in two studies that investigated the relation between technology and representation. In the first study, participants performed either a remote lab or a simulation incorporating one of two visual representations, either a static image or a video of the equipment. Although participants in both lab conditions learned, participants in the remote lab condition had more authentic experiences. However, effects were moderated by the realism of the visual representation. Participants who saw a video were more invested and felt the experience was more authentic. In a second study, participants performed a remote lab and either saw the same video as in the first study, an animation, or the video and an animation. Most participants had an authentic experience because both representations evoked strong feelings of presence. However, participants who saw the video were more likely to believe the remote technology was real. Overall, the findings suggest that participants' experiences with technology were shaped by representation. Students had more authentic experiences using the remote lab than the simulation. However, incorporating visual representations that enhance presence made these experiences even more authentic and meaningful than afforded by the technology alone.
OPTIMAL EXPERIMENT DESIGN FOR MAGNETIC RESONANCE FINGERPRINTING

PubMed Central

Zhao, Bo; Haldar, Justin P.; Setsompop, Kawin; Wald, Lawrence L.

2017-01-01

Magnetic resonance (MR) fingerprinting is an emerging quantitative MR imaging technique that simultaneously acquires multiple tissue parameters in an efficient experiment. In this work, we present an estimation-theoretic framework to evaluate and design MR fingerprinting experiments. More specifically, we derive the Cramér-Rao bound (CRB), a lower bound on the covariance of any unbiased estimator, to characterize parameter estimation for MR fingerprinting. We then formulate an optimal experiment design problem based on the CRB to choose a set of acquisition parameters (e.g., flip angles and/or repetition times) that maximizes the signal-to-noise ratio efficiency of the resulting experiment. The utility of the proposed approach is validated by numerical studies. Representative results demonstrate that the optimized experiments allow for substantial reduction in the length of an MR fingerprinting acquisition, and substantial improvement in parameter estimation performance. PMID:28268369
Optimal experiment design for magnetic resonance fingerprinting.

PubMed

Bo Zhao; Haldar, Justin P; Setsompop, Kawin; Wald, Lawrence L

2016-08-01

Magnetic resonance (MR) fingerprinting is an emerging quantitative MR imaging technique that simultaneously acquires multiple tissue parameters in an efficient experiment. In this work, we present an estimation-theoretic framework to evaluate and design MR fingerprinting experiments. More specifically, we derive the Cramér-Rao bound (CRB), a lower bound on the covariance of any unbiased estimator, to characterize parameter estimation for MR fingerprinting. We then formulate an optimal experiment design problem based on the CRB to choose a set of acquisition parameters (e.g., flip angles and/or repetition times) that maximizes the signal-to-noise ratio efficiency of the resulting experiment. The utility of the proposed approach is validated by numerical studies. Representative results demonstrate that the optimized experiments allow for substantial reduction in the length of an MR fingerprinting acquisition, and substantial improvement in parameter estimation performance.
The Validity and Precision of the Comparative Interrupted Time-Series Design: Three Within-Study Comparisons

ERIC Educational Resources Information Center

St. Clair, Travis; Hallberg, Kelly; Cook, Thomas D.

2016-01-01

We explore the conditions under which short, comparative interrupted time-series (CITS) designs represent valid alternatives to randomized experiments in educational evaluations. To do so, we conduct three within-study comparisons, each of which uses a unique data set to test the validity of the CITS design by comparing its causal estimates to…
Therapeutic Observation of an Infant in Foster Care

ERIC Educational Resources Information Center

Wakelyn, Jenifer

2011-01-01

The paper describes a clinical research study of therapeutic observation of an infant in foster care. Infants and children under five represent more than half of all children entering care in the UK. The emotional needs of this population tend to be overlooked. This study aimed to find out about the experience of an infant or young child in care,…
Classroom Management Training, Teaching Experience and Gender: Do These Variables Impact Teachers' Attitudes and Beliefs toward Classroom Management Style?

ERIC Educational Resources Information Center

Martin, Nancy K.; Yin, Zenong; Mayall, Hayley

2006-01-01

This study represents a continuation of research efforts to further refine the Attitudes and Beliefs on Classroom Control (ABCC) Inventory. The purposes of this study were to investigate the: (1) impact of classroom management training on classroom management style; (2) differences in attitudes toward classroom management between novice and…
Mass Communication Course Evaluations: An Exploratory Study on the Effect of Gender.

ERIC Educational Resources Information Center

Lueck, Therese L.; And Others

An exploratory study examined the effect of gender on student evaluation ratings of journalism and mass communication instructors. Subjects were 8 professors (4 male and 4 female) who represented a wide range of teaching experience and taught a total of 243 students (108 women and 135 men) in 10 different types of classrooms. A total of 241…
German Migrant Teachers in Australia: Insights into the Largest Cohort of Non-English Speaking Background Teachers

ERIC Educational Resources Information Center

Bense, Katharina

2015-01-01

The research reported in this paper investigates the situation of German migrant teachers in Australia. Although German born teachers represent the largest group of non-English speaking background teachers in Australia, there is no study of the circumstances and experiences of these teachers in Australia. This study aims to fill this gap. It…
Prevalence and Mental Health Correlates of Harassment and Discrimination in the Workplace: Results from a National Study

ERIC Educational Resources Information Center

Rospenda, Kathleen M.; Richman, Judith A.; Shannon, Candice A.

2009-01-01

This study describes past-year prevalence and effects on mental health and drinking outcomes for harassment and discrimination in the workplace (HDW) in a nationally representative random digit dial phone survey conducted in 2003-2004 (n = 2,151). HDW measures included experiences and perceptions of sexual harassment (SH) and generalized workplace…
Concepts of Mathematics for Students of Physics and Engineering: A Dictionary

NASA Technical Reports Server (NTRS)

Kolecki, Joseph C.

2003-01-01

A physicist with an engineering background, the author presents a mathematical dictionary containing material encountered over many years of study and professional work at NASA. This work is a compilation of the author's experience and progress in the field of study represented and consists of personal notes and observations that can be used by students in physics and engineering.
Study of the dynamic properties and effects of temperature using a spring model for the bouncing ball

NASA Astrophysics Data System (ADS)

Wadhwa, Ajay

2013-05-01

We studied the motion of a bouncing ball by representing it through an equivalent mass-spring system executing damped harmonic oscillations. We represented the elasticity of the system through the spring constant ‘k’ and the viscous damping effect, causing loss of energy, through damping constant ‘c’. By including these two factors we formed a differential equation for the equivalent mass-spring system of the bouncing ball. This equation was then solved to study the elastic and dynamic properties of its motion by expressing them in terms of experimentally measurable physical quantities such as contact time, coefficient of restitution, etc. We used our analysis for different types of ball material: rubber (lawn-tennis ball, super ball, soccer ball and squash ball) and plastic (table-tennis ball) at room temperature. Since the effect of temperature on the bounce of a squash ball is significant, we studied the temperature dependence of its elastic properties. The experiments were performed using audio and surface-temperature sensors interfaced with a computer through a USB port. The work presented here is suitable for undergraduate laboratories. It particularly emphasizes the use of computer interfacing for conducting conventional physics experiments.
Iron Bioavailability Studies of the First Generation of Iron-Biofortified Beans Released in Rwanda.

PubMed

Glahn, Raymond; Tako, Elad; Hart, Jonathan; Haas, Jere; Lung'aho, Mercy; Beebe, Steve

2017-07-21

This paper represents a series of in vitro iron (Fe) bioavailability experiments, Fe content analysis and polyphenolic profile of the first generation of Fe biofortified beans ( Phaseolus vulgaris ) selected for human trials in Rwanda and released to farmers of that region. The objective of the present study was to demonstrate how the Caco-2 cell bioassay for Fe bioavailability can be utilized to assess the nutritional quality of Fe in such varieties and how they may interact with diets and meal plans of experimental studies. Furthermore, experiments were also conducted to directly compare this in vitro approach with specific human absorption studies of these Fe biofortified beans. The results show that other foods consumed with beans, such as rice, can negatively affect Fe bioavailability whereas potato may enhance the Fe absorption when consumed with beans. The results also suggest that the extrinsic labelling approach to measuring human Fe absorption can be flawed and thus provide misleading information. Overall, the results provide evidence that the Caco-2 cell bioassay represents an effective approach to evaluate the nutritional quality of Fe-biofortified beans, both separate from and within a targeted diet or meal plan.
Iron Bioavailability Studies of the First Generation of Iron-Biofortified Beans Released in Rwanda

PubMed Central

Glahn, Raymond; Tako, Elad; Hart, Jonathan; Haas, Jere; Beebe, Steve

2017-01-01

This paper represents a series of in vitro iron (Fe) bioavailability experiments, Fe content analysis and polyphenolic profile of the first generation of Fe biofortified beans (Phaseolus vulgaris) selected for human trials in Rwanda and released to farmers of that region. The objective of the present study was to demonstrate how the Caco-2 cell bioassay for Fe bioavailability can be utilized to assess the nutritional quality of Fe in such varieties and how they may interact with diets and meal plans of experimental studies. Furthermore, experiments were also conducted to directly compare this in vitro approach with specific human absorption studies of these Fe biofortified beans. The results show that other foods consumed with beans, such as rice, can negatively affect Fe bioavailability whereas potato may enhance the Fe absorption when consumed with beans. The results also suggest that the extrinsic labelling approach to measuring human Fe absorption can be flawed and thus provide misleading information. Overall, the results provide evidence that the Caco-2 cell bioassay represents an effective approach to evaluate the nutritional quality of Fe-biofortified beans, both separate from and within a targeted diet or meal plan. PMID:28754026
Naming Block Structures: A Multimodal Approach

ERIC Educational Resources Information Center

Cohen, Lynn; Uhry, Joanna

2011-01-01

This study describes symbolic representation in block play in a culturally diverse suburban preschool classroom. Block play is "multimodal" and can allow children to experiment with materials to represent the world in many forms of literacy. Combined qualitative and quantitative data from seventy-seven block structures were collected and analyzed.…
Maternal Violence, Victimization, and Child Physical Punishment in Peru

ERIC Educational Resources Information Center

Gage, Anastasia J.; Silvestre, Eva A.

2010-01-01

Objectives: This study examined whether mothers' experience of violence was a risk factor for physical punishment. Methods: Data were derived from the nationally representative 2000 Peru Demographic and Family Health Survey. Participants were 12,601 currently married women who were living with biological children aged 0-17 years and were…

Designing for Mathematical Abstraction

ERIC Educational Resources Information Center

Pratt, Dave; Noss, Richard

2010-01-01

Our focus is on the design of systems (pedagogical, technical, social) that encourage mathematical abstraction, a process we refer to as "designing for abstraction." In this paper, we draw on detailed design experiments from our research on children's understanding about chance and distribution to re-present this work as a case study in designing…
Elevated blood lead and cadmium levels associated with chronic infections among non-smokers in a cross-sectional analysis of NHANES data

EPA Science Inventory

BACKGROUND: Experimental animal studies, in vitro experiments, and clinical assessments have shown that metal toxicity can impair immune responses. We analyzed data from a United States representative National Health and Nutrition Examination Survey (NHANES) to explore associatio...
Harried by Harding and Haraway: Student-Mentor Collaboration in Disability Studies

ERIC Educational Resources Information Center

Salmon, Nancy; Bassett, Raewyn

2009-01-01

Exploring the friendships of disabled youth in forthcoming doctoral research raised many unsettling questions. Members of academic and disability communities thoughtfully asked how the researcher could legitimately understand, interpret and represent the experiences of disabled youth. The initial impulse was to rely on nearly two decades of…
Bridging the Undergraduate Curriculum Using an Integrated Course-Embedded Undergraduate Research Experience (ICURE)

ERIC Educational Resources Information Center

Russell, James E.; D'Costa, Allison R.; Runck, Clay; Barnes, David W.; Barrera, Alessandra L.; Hurst-Kennedy, Jennifer; Sudduth, Elizabeth B.; Quinlan, Erin L.; Schlueter, Mark

2015-01-01

The traditional undergraduate program of study incorporates a selection of classes that represent a broad spectrum of subdisciplines. Unfortunately, few curricula successfully integrate concepts in all subdisciplines, giving undergraduates the misconception that there is a lack of application or connectedness between class subjects. An integrated…
The Effects of Humor on Test Anxiety and Test Performance

ERIC Educational Resources Information Center

Tali, Glenda

2017-01-01

Testing in an academic setting provokes anxiety in all students in higher education, particularly nursing students. When students experience high levels of anxiety, the resulting decline in test performance often does not represent an accurate assessment of students' academic achievement. This quantitative, experimental study examined the effects…
Effects of ozone on exercising and sedentary adult men and women representative of the flight attendant population.

DOT National Transportation Integrated Search

1979-10-01

Three studies at two ozone concentrations have been carried out in an attempt to define the effect level for ozone under simulated flight conditions. All experiments were carried out in an altitude chamber held at 6,000 feet MSL; relative humidity wa...
Factors of Students' Intercultural Competence Development in the Context of Georgia

ERIC Educational Resources Information Center

Malazonia, David; Maglakelidze, Shorena; Chiabrishvili, Nino; Gakheladze, Giorgi

2017-01-01

Research aims to define the impact of diverse cultural factors on formation of students' intercultural competences. Study revealed following negative tendencies: students have insufficient knowledge about different cultures, in fact, they do not have any experience of communicating with other cultural representatives, and they are reluctant to…
Determining Student Competency in Field Placements: An Emerging Theoretical Model

ERIC Educational Resources Information Center

Salm, Twyla L.; Johner, Randy; Luhanga, Florence

2016-01-01

This paper describes a qualitative case study that explores how twenty-three field advisors, representing three human service professions including education, nursing, and social work, experience the process of assessment with students who are struggling to meet minimum competencies in field placements. Five themes emerged from the analysis of…
A Year in Head Start: Children, Families and Programs. ACF-ORPRE Report

ERIC Educational Resources Information Center

Aikens, Nikki; Tarullo, Louisa; Hulsey, Lara; Ross, Christine; West, Jerry; Xue, Yange

2010-01-01

The Head Start Family and Child Experiences Survey (FACES) was first launched in 1997 as a periodic longitudinal study of program performance. Successive nationally representative samples of Head Start children, their families, classrooms, and programs provide descriptive information on the population served; staff qualifications, credentials,…
Academic and Behavioral Characteristics of Young Adolescents in Self-Care

ERIC Educational Resources Information Center

Shumow, Lee; Smith, Thomas J.; Smith, M. Cecil

2009-01-01

This study examines characteristics of young adolescents who experience self-care, associations between self-care and academic achievement, and whether associations of self-care with academic adjustment vary by child, family, or community characteristics. Using data from the nationally representative 1999 National Household Education Survey,…
The Effect of Hierarchical Task Representations on Task Selection in Voluntary Task Switching

ERIC Educational Resources Information Center

Weaver, Starla M.; Arrington, Catherine M.

2013-01-01

The current study explored the potential for hierarchical representations to influence action selection during voluntary task switching. Participants switched between 4 individual task elements. In Experiment 1, participants were encouraged to represent the task elements as grouped within a hierarchy based on experimental manipulations of varying…
Capturing Teachers' Experience of Learning Design through Case Studies

ERIC Educational Resources Information Center

Masterman, Elizabeth; Jameson, Jill; Walker, Simon

2009-01-01

This article distinguishes three dimensions to learning design: a technological infrastructure, a conceptual framework for practice that focuses on the creation of structured sequences of learning activities, and a way to represent and share practice through the use of mediating artefacts. Focusing initially on the second of these dimensions, the…
Evaluating Youth Work with Vulnerable Young People.

ERIC Educational Resources Information Center

Furlong, Andy; Cartmel, Fred; Powney, Janet; Hall, Stuart

This report presents the results of an 18-month research project that studied the effectiveness of youth work with vulnerable young people. The research, representing six distinct geographical areas of Scotland characterized by disadvantage, focused on young people aged 13 to 16. In each neighborhood, the project examined the experiences of young…
The Mediating Role of School Motivation in Linking Student Victimization and Academic Achievement

ERIC Educational Resources Information Center

Fan, Weihua; Dempsey, Allison G.

2017-01-01

This study examined the mediating role of student school motivation in linking student victimization experiences and academic achievement among a nationally representative sample of students in 10th grade. Structural equation modeling supported that there were significant associations between student victimization and academic achievement for high…
Children's Perspectives on Coping and Support Following Parental Separation

ERIC Educational Resources Information Center

Halpenny, Ann Marie; Greene, Sheila; Hogan, Diane

2008-01-01

Families represent the primary setting in which most children's lives are shaped and determined. Increasingly, children experience ongoing change in family formation and structure, and such fluctuation may threaten or diminish their feelings of security with regard to established family roles, relationships and routines. A number of studies have…
Heterogeneity of Student Perceptions of the Classroom Climate: A Latent Profile Approach

ERIC Educational Resources Information Center

Schenke, Katerina; Ruzek, Erik; Lam, Arena C.; Karabenick, Stuart A.; Eccles, Jacquelynne S.

2017-01-01

Student perceptions are a pivotal point of measurement for understanding why classroom learning environments are effective. Yet there is some evidence that student perceptions cannot be reliably aggregated at the classroom level and, instead, could represent idiosyncratic experiences of students. The present study examines whether heterogeneity in…
Women in Technology: College Experiences That Are Correlated with Long-Term Career Success

ERIC Educational Resources Information Center

Moreno, Melissa Gearhart

2017-01-01

Women are underrepresented in technology careers because they pursue technology degrees less frequently and leave technology careers at greater numbers than do men. By analyzing a representative dataset of college graduates with degrees in computer science, computer engineering, and management information systems, this study identified…
75 FR 19827 - Acquisition Regulation Rewrite

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-15

... of the Secretary, telephone (202) 513-0747, fax (202) 219-4244, or e-mail [email protected]ios... rule we did not conduct or use a study, experiment, or survey requiring peer review under the Data... endorsement of a product, service or position which the contractor represents. 1403.570-2 Procedures. If a...
THE DELACATO INTERPRETATION OF NEUROLOGICAL ORGANIZATION.

ERIC Educational Resources Information Center

ROBBINS, MELVYN PAUL

THE RESULTS FROM AN EXPERIMENT TESTING A SERIES OF SIX HYPOTHESES DEDUCED FROM THE DELACATO INTERPRETATION OF NEUROLOGICAL ORGANIZATION ARE PRESENTED. SUBJECTS IN THE 3-MONTH STUDY WERE SECOND GRADERS FROM THE CHICAGO ARCHDIOCESAN SCHOOL SYSTEM WHO REPRESENTED SIMILAR BACKGROUNDS AND SOCIOECONOMIC LEVELS. COMPARISONS WERE MADE OF THE READING AND…
A Critical Analysis of Time Allocation in Psychoeducational Evaluations

ERIC Educational Resources Information Center

Taub, Gordon E.; Valentine, Jennifer

2014-01-01

This study provides results form a national survey examining school psychologists' allocation of time in psychoeducational evaluations. A total of 177 participants with an average of 13.45 years professional experience in school psychology, representing 39 states, participated in the survey. The results indicate that school psychologists spend the…

Promoting Resilience through Adversity: Increasing Positive Outcomes for Expelled Students

ERIC Educational Resources Information Center

Coleman, Nadia

2015-01-01

This article endeavours to increase educators' understanding of the experiences of students who have been expelled from school in order to represent this critical stakeholder group in future policy development and programme implementation. Students' perspectives are presented through thick description in this narrative case study. Findings…
Attitudes Toward Physical Activity of Champion Women Basketball Players.

ERIC Educational Resources Information Center

Corbin, Charles B.

This study was undertaken to determine which attitudes were central to the motivation of women involved in championship basketball competition. Seventy-five women members of teams represented in national basketball championships served as subjects for this experiment. In addition, a control group of 212 women was randomly selected from physical…
New experiments selected for 1980 operational shuttle flight

NASA Technical Reports Server (NTRS)

1978-01-01

Experiments selected for NASA's Long Duration Exposure Facility mission are described. Technical areas represented by the experiments include materials, thermal control coatings, detectors, power, micrometeoroids, electronics, lubrication, optics, and space debris detection.
The experiences of ataques de nervios: towards an anthropology of emotions in Puerto Rico.

PubMed

Guarnaccia, P J; Rivera, M; Franco, F; Neighbors, C

1996-09-01

Ataques de nervios are an idiom of distress used by Puerto Ricans and other Latinos to express dislocations in the social world of the family. This paper contributes to the growing study of the "anthropology of the emotions". Through detailed interviews with 121 people in Puerto Rico, 78 of whom had had an ataque de nervios, we are developing a thick description of both the prototypical models for ataques de nervios and the varied individual experiences of ataques. The interview used in this study is a version of the Explanatory Model Interview Catalogue specifically adapted for use in a community study of ataques de nervios in Puerto Rico. Responses to questions on the experience of ataque de nervios were analyzed using a team of reviewers who represented differing knowledge and experience with Puerto Rican culture and mental health practice. The experience of ataques de nervios involves a loss of control in several important domains of experience: emotional expressions, bodily sensations, action dimensions and alterations in consciousness. That loss of control is closely linked to important social contexts relating to major life problems and the experience of suffering.
Psychophysical experiments on the PicHunter image retrieval system

NASA Astrophysics Data System (ADS)

Papathomas, Thomas V.; Cox, Ingemar J.; Yianilos, Peter N.; Miller, Matt L.; Minka, Thomas P.; Conway, Tiffany E.; Ghosn, Joumana

2001-01-01

Psychophysical experiments were conducted on PicHunter, a content-based image retrieval (CBIR) experimental prototype with the following properties: (1) Based on a model of how users respond, it uses Bayes's rule to predict what target users want, given their actions. (2) It possesses an extremely simple user interface. (3) It employs an entropy- based scheme to improve convergence. (4) It introduces a paradigm for assessing the performance of CBIR systems. Experiments 1-3 studied human judgment of image similarity to obtain data for the model. Experiment 4 studied the importance of using: (a) semantic information, (b) memory of earlier input, and (c) relative and absolute judgments of similarity. Experiment 5 tested an approach that we propose for comparing performances of CBIR systems objectively. Finally, experiment 6 evaluated the most informative display-updating scheme that is based on entropy minimization, and confirmed earlier simulation results. These experiments represent one of the first attempts to quantify CBIR performance based on psychophysical studies, and they provide valuable data for improving CBIR algorithms. Even though they were designed with PicHunter in mind, their results can be applied to any CBIR system and, more generally, to any system that involves judgment of image similarity by humans.
Operational plans for life science payloads - From experiment selection through postflight reporting

NASA Technical Reports Server (NTRS)

Mccollum, G. W.; Nelson, W. G.; Wells, G. W.

1976-01-01

Key features of operational plans developed in a study of the Space Shuttle era life science payloads program are presented. The data describes the overall acquisition, staging, and integration of payload elements, as well as program implementation methods and mission support requirements. Five configurations were selected as representative payloads: (a) carry-on laboratories - medical emphasis experiments, (b) mini-laboratories - medical/biology experiments, (c) seven-day dedicated laboratories - medical/biology experiments, (d) 30-day dedicated laboratories - Regenerative Life Support Evaluation (RLSE) with selected life science experiments, and (e) Biomedical Experiments Scientific Satellite (BESS) - extended duration primate (Type I) and small vertebrate (Type II) missions. The recommended operational methods described in the paper are compared to the fundamental data which has been developed in the life science Spacelab Mission Simulation (SMS) test series. Areas assessed include crew training, experiment development and integration, testing, data-dissemination, organization interfaces, and principal investigator working relationships.
Investigation of students' experiences of gendered cultures in engineering workplaces

NASA Astrophysics Data System (ADS)

Male, Sally A.; Gardner, Anne; Figueroa, Eugenia; Bennett, Dawn

2018-05-01

Women remain severely under-represented in engineering in Australia as in all Western countries. This limits the pool of talent, standpoints and approaches within the profession. Furthermore, this under-representation equates to restriction of the benefits of being an engineer mainly to men. Gendered workplace experiences have been found to contribute to women leaving the profession. In this study we explore students' experiences of gendered cultures in engineering workplaces, using interviews with a purposive sample of 13 students (4 male) recruited following a previous survey. Although the overall experience of workplace learning is positive for many students, male and female engineering students reported experiences consistent with masculine cultures. Educators and employers must proactively lead improvements to the culture in engineering workplaces, prepare students for gendered workplaces and support students to reflect during and after workplace experiences. The experiences presented here could be adapted to enhance inclusivity training.
Children's note taking as a mnemonic tool.

PubMed

Eskritt, Michelle; McLeod, Kellie

2008-09-01

When given the opportunity to take notes in memory tasks, children sometimes make notes that are not useful. The current study examined the role that task constraints might play in the production of nonmnemonic notes. In Experiment 1, children played one easy and one difficult memory game twice, once with the opportunity to make notes and once without that opportunity. More children produced functional notations for the easier task than for the more difficult task, and their notations were beneficial to memory performance. Experiment 2 found that the majority of children who at first made nonmnemonic notations were able to produce functional notations with minimal training, and there was no significant difference in notation quality or memory performance between spontaneous and trained note takers. Experiment 3 revealed that the majority of children could transfer their training to a novel task. The results suggest that children's production of nonmnemonic notes may be due in part to a lack of knowledge regarding what task information is important to represent or how to represent it in their notes rather than to an inability to make functional notes in general.
Accommodation requirements for microgravity science and applications research on space station

NASA Technical Reports Server (NTRS)

Uhran, M. L.; Holland, L. R.; Wear, W. O.

1985-01-01

Scientific research conducted in the microgravity environment of space represents a unique opportunity to explore and exploit the benefits of materials processing in the virtual abscence of gravity induced forces. NASA has initiated the preliminary design of a permanently manned space station that will support technological advances in process science and stimulate the development of new and improved materials having applications across the commercial spectrum. A study is performed to define from the researchers' perspective, the requirements for laboratory equipment to accommodate microgravity experiments on the space station. The accommodation requirements focus on the microgravity science disciplines including combustion science, electronic materials, metals and alloys, fluids and transport phenomena, glasses and ceramics, and polymer science. User requirements have been identified in eleven research classes, each of which contain an envelope of functional requirements for related experiments having similar characteristics, objectives, and equipment needs. Based on these functional requirements seventeen items of experiment apparatus and twenty items of core supporting equipment have been defined which represent currently identified equipment requirements for a pressurized laboratory module at the initial operating capability of the NASA space station.
Self-Willed Learning: Experiments in Wild Pedagogy

ERIC Educational Resources Information Center

Jickling, Bob

2015-01-01

This paper is comprised of written text and photographs of wild experiences that relive a series of ontological experiments. The text represents reflections on these experiences. The photographs, artistic expressions of the same experiences, have been made with a homemade pinhole camera--without a lens and viewfinder--thus demanding special…
A new moonquake catalog from Apollo 17 seismic data I: Lunar Seismic Profiling Experiment: Thermal moonquakes and implications for surface processes

NASA Astrophysics Data System (ADS)

Weber, R. C.; Dimech, J. L.; Phillips, D.; Molaro, J.; Schmerr, N. C.

2017-12-01

Apollo 17's Lunar Seismic Profiling Experiment's (LSPE) primary objective was to constrain the near-surface velocity structure at the landing site using active sources detected by a 100 m-wide triangular geophone array. The experiment was later operated in "listening mode," and early studies of these data revealed the presence of thermal moonquakes - short-duration seismic events associated with terminator crossings. However, the full data set has never been systematically analyzed for natural seismic signal content. In this study, we analyze 8 months of continuous LSPE data using an automated event detection technique that has previously successfully been applied to the Apollo 16 Passive Seismic Experiment data. We detected 50,000 thermal moonquakes from three distinct event templates, representing impulsive, intermediate, and emergent onset of seismic energy, which we interpret as reflecting their relative distance from the array. Impulsive events occur largely at sunrise, possibly representing the thermal "pinging" of the nearby lunar lander, while emergent events occur at sunset, possibly representing cracking or slumping in more distant surface rocks and regolith. Preliminary application of an iterative event location algorithm to a subset of the impulsive waveforms supports this interpretation. We also perform 3D modeling of the lunar surface to explore the relative contribution of the lander, known rocks and surrounding topography to the thermal state of the regolith in the vicinity of the Apollo 17 landing site over the course of the lunar diurnal cycle. Further development of both this model and the event location algorithm may permit definitive discrimination between different types of local diurnal events e.g. lander noise, thermally-induced rock breakdown, or fault creep on the nearby Lee-Lincoln scarp. These results could place important constraints on both the contribution of seismicity to regolith production, and the age of young lobate scarps.
Authentic scientific research in an international setting as a path toward higher education

NASA Astrophysics Data System (ADS)

Mladenov, N.; Palomo, M.; Casad, B.; Pietruschka, B.; Buckley, C.

2016-12-01

Studies have shown that undergraduate research opportunities foster student interest in research, encourage minority students to seek advanced degrees, and put students on a path toward higher education. It has been further suggested that engineering projects in international settings address issues of sustainability and promote a connection between engineering and social welfare that may compel students to seek future research opportunities. In this study, we explored the role that authentic research experiences in an international setting play in promoting higher education for students from groups typically under-represented in engineering and sciences. We hypothesized that the international context of the research experiences will provide undergraduate and graduate students with a global perspective of water reuse challenges and promote increased interest in pursuing a higher degree in engineering. Through the Sustainable Sanitation International Research Experiences for Students (IRES) Program, US students conducting research in Durban, South Africa in 2015 and 2016, were tasked with leading 6-week long research projects, collaborating with partners at the University of KwaZulu Natal, and producing papers and presentations for regional and international scientific conferences. All undergraduate participants were from groups under-represented in the sciences. Pre- and post-program survey results revealed that, after completing the program, participants of Cohort 1 had 1) greater research skills, 2) greater identification as an engineer, and 3) stronger intentions to pursue a PhD in engineering. Survey data were also used to evaluate comfort with cultural diversity before and after the international program and the effect of pairing US with South African student researchers. Our results indicate that students' awareness of societal needs and engineering challenges faced in Durban resulted in a positive impact on each student. The benefits gained from the international research experience have important implications for environmental engineering and other scientific fields in terms of inducing greater self-efficacy and fostering an interest in higher education for students from groups traditionally under-represented in the sciences.
[Regional and individual factors of stress experience in Germany: results of a representative survey with the perceived stress questionnaire (PSQ)].

PubMed

Kocalevent, R-D; Hinz, A; Brähler, E; Klapp, B F

2011-12-01

The aim of the present study was to define, besides prevalence data, regional and individual factors of stress experience in a representative sample of the German general population. Regional factors were examined separately by federal state and the size of the political location. Individual factors were defined according to the severity of the stress experience as well as on the basis of central social factors such as family state, profession and earnings. The Perceived Stress Questionnaire (PSQ), a validated, self-evaluation process for recording a subjective representation of frequency estimates of stress experiences was used. Data acquisition was carried out by a market research institute in a multi-topic questionnaire (N=2,552). Households were selected by the random route procedure, target persons were also selected at random. The prevalence rate for an elevated stress experience was 14.5%, that for a very high stress experience 3.1% of the sample. People without education exhibited the highest rates of stress experience (36.8%), followed by the unemployed (30.6%). Individual and social factors that favour an increased stress experience are a subjectively poor state of health (OR: 3.42) or belonging to the lower social economic status (OR: 1.30). Furthermore, there are indications of regional factors such as size of the location as well as differences between the individual federal states. An east-west comparion did not show any significant differences with regard to stress experiences. In the light of the illness burden associated with chronic stress situations, preventative measures in cases of unemployment or low level of education should be given priority. © Georg Thieme Verlag KG Stuttgart · New York.
Comparative investigations of manual action representations: evidence that chimpanzees represent the costs of potential future actions involving tools.

PubMed

Frey, Scott H; Povinelli, Daniel J

2012-01-12

The ability to adjust one's ongoing actions in the anticipation of forthcoming task demands is considered as strong evidence for the existence of internal action representations. Studies of action selection in tool use reveal that the behaviours that we choose in the present moment differ depending on what we intend to do next. Further, they point to a specialized role for mechanisms within the human cerebellum and dominant left cerebral hemisphere in representing the likely sensory costs of intended future actions. Recently, the question of whether similar mechanisms exist in other primates has received growing, but still limited, attention. Here, we present data that bear on this issue from a species that is a natural user of tools, our nearest living relative, the chimpanzee. In experiment 1, a subset of chimpanzees showed a non-significant tendency for their grip preferences to be affected by anticipation of the demands associated with bringing a tool's baited end to their mouths. In experiment 2, chimpanzees' initial grip preferences were consistently affected by anticipation of the forthcoming movements in a task that involves using a tool to extract a food reward. The partial discrepancy between the results of these two studies is attributed to the ability to accurately represent differences between the motor costs associated with executing the two response alternatives available within each task. These findings suggest that chimpanzees are capable of accurately representing the costs of intended future actions, and using those predictions to select movements in the present even in the context of externally directed tool use.
Comparative investigations of manual action representations: evidence that chimpanzees represent the costs of potential future actions involving tools

PubMed Central

Frey, Scott H.; Povinelli, Daniel J.

2012-01-01

The ability to adjust one's ongoing actions in the anticipation of forthcoming task demands is considered as strong evidence for the existence of internal action representations. Studies of action selection in tool use reveal that the behaviours that we choose in the present moment differ depending on what we intend to do next. Further, they point to a specialized role for mechanisms within the human cerebellum and dominant left cerebral hemisphere in representing the likely sensory costs of intended future actions. Recently, the question of whether similar mechanisms exist in other primates has received growing, but still limited, attention. Here, we present data that bear on this issue from a species that is a natural user of tools, our nearest living relative, the chimpanzee. In experiment 1, a subset of chimpanzees showed a non-significant tendency for their grip preferences to be affected by anticipation of the demands associated with bringing a tool's baited end to their mouths. In experiment 2, chimpanzees' initial grip preferences were consistently affected by anticipation of the forthcoming movements in a task that involves using a tool to extract a food reward. The partial discrepancy between the results of these two studies is attributed to the ability to accurately represent differences between the motor costs associated with executing the two response alternatives available within each task. These findings suggest that chimpanzees are capable of accurately representing the costs of intended future actions, and using those predictions to select movements in the present even in the context of externally directed tool use. PMID:22106426
Effect of Hydrograph Characteristics on Vertical Grain Sorting in Gravel Bed Rivers

NASA Astrophysics Data System (ADS)

Hassan, M. A.; Parker, G.; Egozi, R.

2005-12-01

This study focuses on the formation of armour layers over a range of hydrologic conditions that includes two limiting cases; a relatively flat hydrograph that represents conditions produced by continuous snowmelt and a sharply peaked hydrograph that represents conditions associated with flash floods. To achieve our objective we analyzed field evidence, conducted flume experiments and performed numerical simulations. Sediment supply appears to be a first-order control on bed surface armouring, while the shape of the hydrograph plays a secondary role. All constant hydrograph experiments developed a well-armored structured surface while short asymmetrical hydrographs did not show substantial vertical sorting. All symmetrical hydrographs show some degree of sorting, and the sorting tended to become more pronounced with longer duration. Using the numerical framework of Parker, modified Powell, et al. and Wilcock and Crowe, we were able to achieve similar results.
Attentional Modulation of Brain Responses to Primary Appetitive and Aversive Stimuli

PubMed Central

Field, Brent A.; Buck, Cara L.; McClure, Samuel M.; Nystrom, Leigh E.; Kahneman, Daniel; Cohen, Jonathan D.

2015-01-01

Studies of subjective well-being have conventionally relied upon self-report, which directs subjects’ attention to their emotional experiences. This method presumes that attention itself does not influence emotional processes, which could bias sampling. We tested whether attention influences experienced utility (the moment-by-moment experience of pleasure) by using functional magnetic resonance imaging (fMRI) to measure the activity of brain systems thought to represent hedonic value while manipulating attentional load. Subjects received appetitive or aversive solutions orally while alternatively executing a low or high attentional load task. Brain regions associated with hedonic processing, including the ventral striatum, showed a response to both juice and quinine. This response decreased during the high-load task relative to the low-load task. Thus, attentional allocation may influence experienced utility by modulating (either directly or indirectly) the activity of brain mechanisms thought to represent hedonic value. PMID:26158468
Multiphase, multicomponent simulations and experiments of reactive flow, relevant for combining geologic CO2 sequestration with geothermal energy capture

NASA Astrophysics Data System (ADS)

Saar, Martin O.

2011-11-01

Understanding the fluid dynamics of supercritical carbon dioxide (CO2) in brine- filled porous media is important for predictions of CO2 flow and brine displacement during geologic CO2 sequestration and during geothermal energy capture using sequestered CO2 as the subsurface heat extraction fluid. We investigate multiphase fluid flow in porous media employing particle image velocimetry experiments and lattice-Boltzmann fluid flow simulations at the pore scale. In particular, we are interested in the motion of a drop (representing a CO2 bubble) through an orifice in a plate, representing a simplified porous medium. In addition, we study single-phase/multicomponent reactive transport experimentally by injecting water with dissolved CO2 into rocks/sediments typically considered for CO2 sequestration to investigate how resultant fluid-mineral reactions modify permeability fields. Finally, we investigate numerically subsurface CO2 and heat transport at the geologic formation scale.
Modeling aspects of human memory for scientific study.

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

Caudell, Thomas P.; Watson, Patrick; McDaniel, Mark A.

Working with leading experts in the field of cognitive neuroscience and computational intelligence, SNL has developed a computational architecture that represents neurocognitive mechanisms associated with how humans remember experiences in their past. The architecture represents how knowledge is organized and updated through information from individual experiences (episodes) via the cortical-hippocampal declarative memory system. We compared the simulated behavioral characteristics with those of humans measured under well established experimental standards, controlling for unmodeled aspects of human processing, such as perception. We used this knowledge to create robust simulations of & human memory behaviors that should help move the scientific community closermore » to understanding how humans remember information. These behaviors were experimentally validated against actual human subjects, which was published. An important outcome of the validation process will be the joining of specific experimental testing procedures from the field of neuroscience with computational representations from the field of cognitive modeling and simulation.« less
Study of geometric phase using classical coupled oscillators

NASA Astrophysics Data System (ADS)

Bhattacharjee, Sharba; Dey, Biprateep; Mohapatra, Ashok K.

2018-05-01

We illustrate the geometric phase associated with the cyclic dynamics of a classical system of coupled oscillators. We use an analogy between a classical coupled oscillator and a two-state quantum mechanical system to represent the evolution of the oscillator on an equivalent Hilbert space, which may be represented as a trajectory on the surface of a sphere. The cyclic evolution of the system leads to a change in phase, which consists of a dynamic phase along with an additional phase shift dependent on the geometry of the evolution. A simple experiment suitable for advanced undergraduate students is designed to study the geometric phase incurred during cyclic evolution of a coupled oscillator.

Calibrating cellular automaton models for pedestrians walking through corners

NASA Astrophysics Data System (ADS)

Dias, Charitha; Lovreglio, Ruggiero

2018-05-01

Cellular Automata (CA) based pedestrian simulation models have gained remarkable popularity as they are simpler and easier to implement compared to other microscopic modeling approaches. However, incorporating traditional floor field representations in CA models to simulate pedestrian corner navigation behavior could result in unrealistic behaviors. Even though several previous studies have attempted to enhance CA models to realistically simulate pedestrian maneuvers around bends, such modifications have not been calibrated or validated against empirical data. In this study, two static floor field (SFF) representations, namely 'discrete representation' and 'continuous representation', are calibrated for CA-models to represent pedestrians' walking behavior around 90° bends. Trajectory data collected through a controlled experiment are used to calibrate these model representations. Calibration results indicate that although both floor field representations can represent pedestrians' corner navigation behavior, the 'continuous' representation fits the data better. Output of this study could be beneficial for enhancing the reliability of existing CA-based models by representing pedestrians' corner navigation behaviors more realistically.
Measuring client experiences in long-term care in the Netherlands: a pilot study with the Consumer Quality Index Long-term Care.

PubMed

Triemstra, Mattanja; Winters, Sjenny; Kool, Rudolf B; Wiegers, Therese A

2010-04-12

This study aims to describe the development, testing and optimization of a new standard instrument, the Consumer Quality Index (CQ-index) Long-term Care, for measuring client experiences with long-term care in the Netherlands. Three versions of the CQ-index questionnaires and protocols for study sampling and data collection were developed, designed for interviews with residents of nursing or residential care homes and postal surveys among representatives of psychogeriatric residents and homecare clients. From July to November 2006 a pilot study was conducted among 2,697 clients of 68 nursing or residential care homes, 2,164 representatives of clients in 57 psychogeriatric care institutions, and 1,462 clients of 19 homecare organizations. We performed psychometric analyses and descriptive analyses, and evaluated the pilot study. The pilot study showed the feasibility and usability of the instruments, supported the multidimensionality of the questionnaires and showed first findings on client experiences and possibilities for quality improvement. Nine scales applied to all care settings: shared decision making, attitude and courtesy, information, body care, competence and safety of care, activities, autonomy, mental well-being, and availability of personnel. The pilot resulted in three optimized questionnaires and recommendations for nationwide implementation. The CQ-index Long-term Care provides a good basis to investigate the quality of nursing homes, residential care homes and homecare from the clients' perspective. This standardized instrument enables a nationwide comparison of the quality of long-term care for the purpose of transparency and quality assurance.
Engaging Diverse Students in Statistical Inquiry: A Comparison of Learning Experiences and Outcomes of Under-Represented and Non-Underrepresented Students Enrolled in a Multidisciplinary Project-Based Statistics Course

ERIC Educational Resources Information Center

Dierker, Lisa; Alexander, Jalen; Cooper, Jennifer L.; Selya, Arielle; Rose, Jennifer; Dasgupta, Nilanjana

2016-01-01

Introductory statistics needs innovative, evidence-based teaching practices that support and engage diverse students. To evaluate the success of a multidisciplinary, project-based course, we compared experiences of under-represented (URM) and non-underrepresented students in 4 years of the course. While URM students considered the material more…
Self-report captures 27 distinct categories of emotion bridged by continuous gradients.

PubMed

Cowen, Alan S; Keltner, Dacher

2017-09-19

Emotions are centered in subjective experiences that people represent, in part, with hundreds, if not thousands, of semantic terms. Claims about the distribution of reported emotional states and the boundaries between emotion categories-that is, the geometric organization of the semantic space of emotion-have sparked intense debate. Here we introduce a conceptual framework to analyze reported emotional states elicited by 2,185 short videos, examining the richest array of reported emotional experiences studied to date and the extent to which reported experiences of emotion are structured by discrete and dimensional geometries. Across self-report methods, we find that the videos reliably elicit 27 distinct varieties of reported emotional experience. Further analyses revealed that categorical labels such as amusement better capture reports of subjective experience than commonly measured affective dimensions (e.g., valence and arousal). Although reported emotional experiences are represented within a semantic space best captured by categorical labels, the boundaries between categories of emotion are fuzzy rather than discrete. By analyzing the distribution of reported emotional states we uncover gradients of emotion-from anxiety to fear to horror to disgust, calmness to aesthetic appreciation to awe, and others-that correspond to smooth variation in affective dimensions such as valence and dominance. Reported emotional states occupy a complex, high-dimensional categorical space. In addition, our library of videos and an interactive map of the emotional states they elicit (https://s3-us-west-1.amazonaws.com/emogifs/map.html) are made available to advance the science of emotion.
Self-report captures 27 distinct categories of emotion bridged by continuous gradients

PubMed Central

Keltner, Dacher

2017-01-01

Emotions are centered in subjective experiences that people represent, in part, with hundreds, if not thousands, of semantic terms. Claims about the distribution of reported emotional states and the boundaries between emotion categories—that is, the geometric organization of the semantic space of emotion—have sparked intense debate. Here we introduce a conceptual framework to analyze reported emotional states elicited by 2,185 short videos, examining the richest array of reported emotional experiences studied to date and the extent to which reported experiences of emotion are structured by discrete and dimensional geometries. Across self-report methods, we find that the videos reliably elicit 27 distinct varieties of reported emotional experience. Further analyses revealed that categorical labels such as amusement better capture reports of subjective experience than commonly measured affective dimensions (e.g., valence and arousal). Although reported emotional experiences are represented within a semantic space best captured by categorical labels, the boundaries between categories of emotion are fuzzy rather than discrete. By analyzing the distribution of reported emotional states we uncover gradients of emotion—from anxiety to fear to horror to disgust, calmness to aesthetic appreciation to awe, and others—that correspond to smooth variation in affective dimensions such as valence and dominance. Reported emotional states occupy a complex, high-dimensional categorical space. In addition, our library of videos and an interactive map of the emotional states they elicit (https://s3-us-west-1.amazonaws.com/emogifs/map.html) are made available to advance the science of emotion. PMID:28874542
Lived experience of working with female patients in a high-secure mental health setting.

PubMed

Beryl, Rachel; Davies, Jason; Völlm, Birgit

2018-02-01

Women's secure hospitals are often considered to be stressful and demanding places to work, with these environments characterized as challenging and violent. However, the staff experience of working in this environment is not well represented in the literature. The present study is the first to examine the 'lived experience' of seven nurses working in the National High Secure Healthcare Service for Women. Interview transcripts were analysed with the use of interpretative phenomenological analysis, and the findings presented within four superordinate themes 'horror', 'balancing acts', 'emotional hard labour', and 'the ward as a community'. These themes all depict the challenges that participants experience in their work, the ways in which they cope with these challenges, and how they make sense of these experiences. A meta-theme of 'making sense by understanding why' is also presented, which represents the importance for participants to attempt to make sense of the tensions and challenges by formulating a fuller meaning. The findings suggest the importance of workforce development in terms of allowing sufficient protected time for reflection and formulation (e.g. within the format of group supervision or reflective practice), and for staff-support mechanisms (e.g. clinical supervision, counselling, debriefs) to be inbuilt into the ethos of a service, so as to provide proactive support for staff 'on the frontline'. © 2016 Australian College of Mental Health Nurses Inc.
Evaporative Mass Transfer Behavior of a Complex Immiscible Liquid

PubMed Central

McColl, Colleen M.; Johnson, Gwynn R.; Brusseau, Mark L.

2010-01-01

A series of laboratory experiments was conducted with a multiple-component immiscible liquid, collected from the Picillo Farm Superfund Site in Rhode Island, to examine liquid-vapor mass-transfer behavior. The immiscible liquid, which comprises solvents, oils, pesticides, PCBs, paint sludges, explosives, and other compounds, was characterized using gas chromatography and gas chromatography/mass spectrometry to determine mole fractions of selected constituents. Batch experiments were conducted to evaluate equilibrium phase-partitioning behavior. Two sets of air-stripping column studies were conducted to examine the mass-transfer dynamics of five selected target compounds present in the immiscible-liquid mixture. One set of column experiments was designed to represent a system with free-phase immiscible liquid present; the other was designed to represent a system with a residual phase of immiscible liquid. Initial elution behavior of all target components generally appeared to be ideal for both systems, as the initial vapor-phase concentrations were similar to vapor-phase concentrations measured for the batch experiment and those estimated using Raoult’s law (incorporating the immiscible-liquid composition data). Later-stage removal of 1,2-dichlorobenzene appeared to be rate limited for the columns containing free-phase immiscible liquid and no porous medium. Conversely, evaporative mass transfer appeared to be ideal throughout the experiment conducted with immiscible liquid distributed relatively uniformly as a residual phase within a sandy porous medium. PMID:18614196
Evaporative mass transfer behavior of a complex immiscible liquid.

PubMed

McColl, Colleen M; Johnson, Gwynn R; Brusseau, Mark L

2008-09-01

A series of laboratory experiments was conducted with a multiple-component immiscible liquid, collected from the Picillo Farm Superfund Site in Rhode Island, to examine liquid-vapor mass-transfer behavior. The immiscible liquid, which comprises solvents, oils, pesticides, PCBs, paint sludges, explosives, and other compounds, was characterized using gas chromatography and gas chromatography/mass spectrometry to determine mole fractions of selected constituents. Batch experiments were conducted to evaluate equilibrium phase-partitioning behavior. Two sets of air-stripping column studies were conducted to examine the mass-transfer dynamics of five selected target compounds present in the immiscible-liquid mixture. One set of column experiments was designed to represent a system with free-phase immiscible liquid present; the other was designed to represent a system with a residual phase of immiscible liquid. Initial elution behavior of all target components generally appeared to be ideal for both systems, as the initial vapor-phase concentrations were similar to vapor-phase concentrations measured for the batch experiment and those estimated using Raoult's law (incorporating the immiscible-liquid composition data). Later-stage removal of 1,2-dichlorobenzene appeared to be rate limited for the columns containing free-phase immiscible liquid and no porous medium. Conversely, evaporative mass transfer appeared to be ideal throughout the experiment conducted with immiscible liquid distributed relatively uniformly as a residual phase within a sandy porous medium.
Musical preferences during and after relaxation and exercise.

PubMed

North, A C; Hargreaves, D J

2000-01-01

Effects of the listening context on responses to music largely have been neglected despite the prevalence of music listening in our everyday lives. This article reports 2 studies in which participants chose music of high or low arousal potential during (Experiment 1) or immediately after (Experiment 2) exercise or relaxation. In Experiment 1, participants preferred appropriate arousal-polarizing music over arousal-moderating music. In Experiment 2, participants preferred arousal-moderating music over arousal-polarizing music, such that their listening times contrasted clearly with those in the first study even though the same music and methods were used. Thus musical preferences interact with the listening situation, and participants' music selections represent an attempt to optimize their responses to that situation. When motivated to maintain a state of polarized arousal, listeners use music to achieve this; when they have no such goal, they use music to moderate arousal.
Dimensional psychotic experiences in adolescence: Evidence from a taxometric study of a community-based sample.

PubMed

Taylor, Mark J; Freeman, Daniel; Ronald, Angelica

2016-07-30

Psychotic experiences of varying severity levels are common in adolescence. It is not known whether beyond a certain severity in the general population, psychotic experiences represent a categorically distinct phenomena to milder psychotic experiences. We employed taxometric analytic procedures to determine whether psychotic experiences in adolescence are taxonic (i.e. categorical) or dimensional. Six different psychotic experiences were assessed in a community sample of approximately 5000 adolescents. Three taxometric procedures were conducted. Across all procedures, there was no evidence of a taxon (i.e. a separate latent population) underlying psychotic experiences in adolescence. Rather, a dimensional structure was supported. The results support the notion that psychotic experiences are continuously distributed throughout the general population, and there is no clear discontinuity between milder and more severe psychotic experiences. Thus, these findings support the use of dimensional approaches to understanding psychotic experiences in etiological studies. In clinical practice, categorical cut-offs are needed: the present findings show that a 'natural' break point is not present for identifying severe psychotic experiences, and it is likely therefore that other criteria (such as general functioning) might better aid decision-making with regards to identifying individuals with severe psychotic experiences in need of care during adolescence. Copyright © 2016 The Authors. Published by Elsevier Ireland Ltd.. All rights reserved.
It was the best of times, it was the worst of times: doctoral students' experiences of family therapy research training through alternative forms of data representation.

PubMed

Piercy, Fred P; McWey, Lenore; Tice, Susan; James, Ebony Joy; Morris, Matt; Arthur, Kristin

2005-09-01

In this study, we interviewed 14 doctoral students from 10 COAMFTE-accredited doctoral programs to learn more about how they experienced their research training and what they might suggest to strengthen the research culture in their training programs. We solicited somewhat unconventional data--metaphors, poetry, free associations, critical experiences--to (a) tap into our participants' underlying thought processes, (b) capture the multifaceted nature of their doctoral research training, and (c) represent the richness of our participants' subjective experiences. The themes we identified reflect both positive and negative research training experiences and suggest several ways that family therapy program faculty might improve their programs' research training and culture.
Post-sampling mortality and non-response patterns in the English Cancer Patient Experience Survey: Implications for epidemiological studies based on surveys of cancer patients.

PubMed

Abel, Gary A; Saunders, Catherine L; Lyratzopoulos, Georgios

2016-04-01

Surveys of the experience of cancer patients are increasingly being introduced in different countries and used in cancer epidemiology research. Sampling processes, post-sampling mortality and survey non-response can influence the representativeness of cancer patient surveys. We examined predictors of post-sampling mortality and non-response among patients initially included in the sampling frame of the English Cancer Patient Experience Survey. We also compared the respondents' diagnostic case-mix to other relevant populations of cancer patients, including incident and prevalent cases. Of 109,477 initially sampled cancer patients, 6273 (5.7%) died between sampling and survey mail-out. Older age and diagnosis of brain, lung and pancreatic cancer were associated with higher risk of post-sampling mortality. The overall response rate was 67% (67,713 respondents), being >70% for the most affluent patients and those diagnosed with colon or breast cancer and <50% for Asian or Black patients, those under 35 and those diagnosed with brain cancer. The diagnostic case-mix of respondents varied substantially from incident or prevalent cancer cases. Respondents to the English Cancer Patient Experience Survey represent a population of recently treated cancer survivors. Although patient survey data can provide unique insights for improving cancer care quality, features of survey populations need to be acknowledged when analysing and interpreting findings from studies using such data. Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserved.
Coping with perceived weight discrimination: testing a theoretical model for examining the relationship between perceived weight discrimination and depressive symptoms in a representative sample of individuals with obesity.

PubMed

Spahlholz, J; Pabst, A; Riedel-Heller, S G; Luck-Sikorski, C

2016-12-01

The association between obesity and perceived weight discrimination has been investigated in several studies. Although there is evidence that perceived weight discrimination is associated with negative outcomes on psychological well-being, there is a lack of research examining possible buffering effects of coping strategies in dealing with experiences of weight discrimination. The present study aims to fill that gap. We examined the relationship between perceived weight discrimination and depressive symptoms and tested whether problem-solving strategies and/or avoidant coping strategies mediated this effect. Using structural equation modeling, we analyzed representative cross-sectional data of n=484 German-speaking individuals with obesity (BMI⩾30 kg m -2 ), aged 18 years and older. Results revealed a direct effect of perceived weight discrimination on depressive symptoms. Further, the data supported a mediational linkage for avoidant coping strategies, not for problem-solving strategies. Higher scores of perceived weight discrimination experiences were associated with both coping strategies, but only avoidant coping strategies were positively linked to more symptoms of depression. Perceived weight discrimination was associated with increased depressive symptoms both directly and indirectly through situational coping strategies. Avoidant coping has the potential to exacerbate depressive symptoms, whereas problem-solving strategies were ineffective in dealing with experiences of weight discrimination. We emphasize the importance of coping strategies in dealing with experiences of weight discrimination and the need to distinguish between using a strategy and benefiting from it without detriment.
Enriching early adult environment affects the copulation behaviour of a tephritid fly.

PubMed

Díaz-Fleischer, Francisco; Arredondo, José; Aluja, Martín

2009-07-01

Early adult experiences in enriched environments favours animal brain and behavioural development ultimately resulting in an increased fitness. However, measuring the effect of environmental enrichment in animal behaviour in nature is often a complicated task, considering the complexity of the natural environment. We expanded previous studies to evaluate how early experience in an enriched environment affects copulation behaviour when animals are confronted with a complex semi-natural environment. Anastrepha ludens flies are an ideal model system for studying these effects because their natural habitats differ significantly from the cage environments in which these flies are reared for biological control purposes. For example, in the field, males form leks of up to six individuals. Each male defends a territory represented by a tree leaf whereas in rearing cages, territories are completely reduced because of the high population density. In a series of three experiments, we observed that male density represented the most influential stimulus for A. ludens male copulation success. Males that experienced lower densities in early adulthood obtained the highest proportion of copulations. By contrast, female copulation behaviour was not altered by female density. However, exposure to natural or artificial leaves in cages in which flies were kept until tested influenced female copulation behaviour. Females that were exposed to enriched environments exhibited a shorter latency to mate and shorter copulation durations with males than females reared in poor environments. We discuss the influence of early experience on male copulation success and female-mating choosiness.
Experiment-Based Teaching in Advanced Control Engineering

ERIC Educational Resources Information Center

Precup, R.-E.; Preitl, S.; Radac, M.-B.; Petriu, E. M.; Dragos, C.-A.; Tar, J. K.

2011-01-01

This paper discusses an experiment-based approach to teaching an advanced control engineering syllabus involving controlled plant analysis and modeling, control structures and algorithms, real-time laboratory experiments, and their assessment. These experiments are structured around the representative case of the longitudinal slip control of an…
Distance-Dependent Processing of Pictures and Words

ERIC Educational Resources Information Center

Amit, Elinor; Algom, Daniel; Trope, Yaacov

2009-01-01

A series of 8 experiments investigated the association between pictorial and verbal representations and the psychological distance of the referent objects from the observer. The results showed that people better process pictures that represent proximal objects and words that represent distal objects than pictures that represent distal objects and…
Experimental study of complex mixed-mode oscillations generated in a Bonhoeffer-van der Pol oscillator under weak periodic perturbation

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

Shimizu, Kuniyasu, E-mail: kuniyasu.shimizu@it-chiba.ac.jp; Sekikawa, Munehisa; Inaba, Naohiko

2015-02-15

Bifurcations of complex mixed-mode oscillations denoted as mixed-mode oscillation-incrementing bifurcations (MMOIBs) have frequently been observed in chemical experiments. In a previous study [K. Shimizu et al., Physica D 241, 1518 (2012)], we discovered an extremely simple dynamical circuit that exhibits MMOIBs. Our model was represented by a slow/fast Bonhoeffer-van der Pol circuit under weak periodic perturbation near a subcritical Andronov-Hopf bifurcation point. In this study, we experimentally and numerically verify that our dynamical circuit captures the essence of the underlying mechanism causing MMOIBs, and we observe MMOIBs and chaos with distinctive waveforms in real circuit experiments.
Cognitive biases and decision making in gambling.

PubMed

Chóliz, Mariano

2010-08-01

Heuristics and cognitive biases can occur in reasoning and decision making. Some of them are very common in gamblers (illusion of control, representativeness, availability, etc.). Structural characteristics and functioning of games of chance favor the appearance of these biases. Two experiments were conducted with nonpathological gamblers. The first experiment was a game of dice with wagers. In the second experiment, the participants played two bingo games. Specific rules of the games favored the appearance of cognitive bias (illusion of control) and heuristics (representativeness and availability) and influence on the bets. Results and implications for gambling are discussed.
Shear History Extensional Rheology Experiment: A Proposed ISS Experiment

NASA Technical Reports Server (NTRS)

Hall, Nancy R.; Logsdon, Kirk A.; Magee, Kevin S.

2007-01-01

The Shear History Extensional Rheology Experiment (SHERE) is a proposed International Space Station (ISS) glovebox experiment designed to study the effect of preshear on the transient evolution of the microstructure and viscoelastic tensile stresses for monodisperse dilute polymer solutions. Collectively referred to as Boger fluids, these polymer solutions have become a popular choice for rheological studies of non-Newtonian fluids and are the non-Newtonian fluid used in this experiment. The SHERE hardware consists of the Rheometer, Camera Arm, Interface Box, Cabling, Keyboard, Tool Box, Fluid Modules, and Stowage Tray. Each component will be described in detail in this paper. In the area of space exploration, the development of in-situ fabrication and repair technology represents a critical element in evolution of autonomous exploration capability. SHERE has the capability to provide data for engineering design tools needed for polymer parts manufacturing systems to ensure their rheological properties have not been impacted in the variable gravity environment and this will be briefly addressed.
Study of industry requirements that can be fulfilled by combustion experimentation aboard space station

NASA Technical Reports Server (NTRS)

Priem, Richard J.

1988-01-01

The purpose of this study is to define the requirements of commercially motivated microgravity combustion experiments and the optimal way for space station to accommodate these requirements. Representatives of commercial organizations, universities and government agencies were contacted. Interest in and needs for microgravity combustion studies are identified for commercial/industrial groups involved in fire safety with terrestrial applications, fire safety with space applications, propulsion and power, industrial burners, or pollution control. From these interests and needs experiments involving: (1) no flow with solid or liquid fuels; (2) homogeneous mixtures of fuel and air; (3) low flow with solid or liquid fuels; (4) low flow with gaseous fuel; (5) high pressure combustion; and (6) special burner systems are described and space station resource requirements for each type of experiment provided. Critical technologies involving the creation of a laboratory environment and methods for combining experimental needs into one experiment in order to obtain effective use of space station are discussed. Diagnostic techniques for monitoring combustion process parameters are identified.

Quality of experience during horticultural activities: an experience sampling pilot study among older adults living in a nursing home.

PubMed

Bassi, Marta; Rassiga, Cecilia; Fumagalli, Natalia; Senes, Giulio

2018-02-12

Horticulture was shown to represent a well-being source for older adults, encompassing the physical, mental and social domains. Aim of this pilot study was to contribute to extant literature through the investigation of the quality of experience associated with horticultural versus occupational activities. A group of 11 older residents of a nursing home were involved in a crossover study with a baseline measure. Participants attended weekly horticultural and occupational sessions for two six-week cycles. Experience Sampling Method was administered before the program and after each session, to assess participants' levels of happiness, concentration, sociability, involvement, challenges and stakes, and self-satisfaction. Altogether, 332 self-report questionnaires were collected. Findings showed that participants' levels of the cognitive and motivational variables increased during both activities, but horticulture was also perceived as providing higher challenges and stakes, and improving self-satisfaction. Results can have practical implications for well-being promotion among older adults through meaningful activity engagement. Copyright © 2018 Elsevier Inc. All rights reserved.
Choice and ego-depletion: the moderating role of autonomy.

PubMed

Moller, Arlen C; Deci, Edward L; Ryan, Richard M

2006-08-01

The self-regulatory strength model maintains that all acts of self-regulation, self-control, and choice result in a state of fatigue called ego-depletion. Self-determination theory differentiates between autonomous regulation and controlled regulation. Because making decisions represents one instance of self-regulation, the authors also differentiate between autonomous choice and controlled choice. Three experiments support the hypothesis that whereas conditions representing controlled choice would be egodepleting, conditions that represented autonomous choice would not. In Experiment 3, the authors found significant mediation by perceived self-determination of the relation between the choice condition (autonomous vs. controlled) and ego-depletion as measured by performance.
Experiences of volunteering: a partnership between service users and a mental health service in the UK.

PubMed

Fegan, Colette; Cook, Sarah

2012-01-01

The aim of the study was to investigate how people with serious mental illness perceived the experience of volunteering for the health care organisation in which they had received a service. The study took a qualitative approach and in phase one, eleven service user volunteers were purposefully sampled and interviewed. In depth interviews were analysed using grounded theory. This paper describes the findings from phase one, and highlights the following themes to represent the volunteering experience: 1) rehearsing for a new direction; 2) treading carefully at first; 3) discovering my new self; and, 4) using my experience and extending relationships. These themes further support a tentative theoretical framework that considers supported volunteering to enhance recovery because it fosters positive risk taking and gives individuals a valued identity that integrates their mental health experience. In phase two, this framework will be tested with service users in more diverse volunteer positions. The findings of my study suggest that mental health services are in a unique position to build partnerships with service users to support their recovery and journeys toward employment by providing opportunities for volunteering.
Crystallization of Yamato 980459 at 0.5 GPA: Are Residual Liquids Like QUE 94201?

NASA Technical Reports Server (NTRS)

Rapp, J. F.; Draper, D. S.; Mercer, C.

2012-01-01

The Martian basaltic meteorites Y980459 and QUE94201 (henceforth referred to as Y98 and QUE respectively) are thought to represent magmatic liquid compositions, rather than being products of protracted crystallization and accumulation like the majority of other martian meteorites. Both meteorite compositions have been experimentally crystallized at 1 bar, and liquidus phases were found to match corresponding mineral core compositions in the meteorites, consistent with the notion that these meteorites represent bona fide melts. They also represent the most primitive and most evolved basaltic martian samples, respectively. Y98 has Mg# (molar Mg/Mg+Fe) approximates 65, and lacks plagioclase; whereas QUE has Mg# approximates 40, and lacks olivine. However they share important geochemical characteristics (e.g. superchondritic CaO/Al2O3, very high epsilon(sub Nd) and low Sr-87/Sr-87) that suggest they sample a similar highly depleted mantle reservoir. As such, they represent likely endmembers of martian magmatic liquid compositions, and it is natural to seek petrogenetic linkages between the two. We make no claim that the actual meteorites themselves share a genetic link (the respective ages rule that out); we are exploring only in general whether primitive martian liquids like Y98 could evolve to liquids resembling QUE. Both experimental and computational efforts have been made to determine if there is indeed such a link. Recent petrological models at 1 bar generated using MELTS suggest that a QUE-like melt can be derived from a parental melt with a Y98 composition. However, experimental studies at 1 bar have been less successful at replicating this progression. Previous experimental crystallization studies of Y98 by our group at 0.5 GPa have produced melt compositions approaching that of QUE, although these results were complicated by the presence of small, variable amounts of H2O in some of the runs owing to the use of talc/pyrex experimental assemblies. Therefore we have repeated the four experiments, augmented with additional runs, all using BaCO3 cell assemblies, which are devoid of water, and these new experiments supersede those reported earlier. Here we report results of experiments simulating equilibrium crystallization; fractional crystallization experiments are currently underway.
A Focus Group Study of the Impact of Trauma Exposure in the 9/11 Terrorist Attacks

PubMed Central

North, Carol S.; Barney, Carissa J.; Pollio, David E.

2014-01-01

Purpose Much of the mental health research that has emerged from the September 11 (9/11) attacks has been focused on posttraumatic stress disorder and its symptoms. To better understand the broader experience of individuals following a disaster, focus groups were conducted with individuals from affected companies both at Ground Zero and elsewhere. Methods Twenty-one focus groups with a total of 140 participants were conducted in the second post-9/11 year. Areas of identified concern were coded into the following themes: Disaster Experience, Emotional Responses, Workplace Issues, Coping, and Issues of Public Concern. Results Discussions of focus groups included material represented in all five themes in companies both at Ground Zero and elsewhere. The emphasis and the content within these themes varied between the Ground Zero and other companies. Content suggesting symptoms of PTSD represented only a minority of the material, especially in the company groups not at Ground Zero. Conclusions This study’s findings revealed an array of psychosocial concerns following the 9/11 attacks among employees of companies in New York City that extended far beyond PTSD. This study’s results provide further evidence that trauma exposure is central to individuals’ post-disaster experience and focus, and to individuals’ adjustment and experience after disaster. PMID:25319111
Expanding Music Listening Experience through Drawing

ERIC Educational Resources Information Center

Han, Yo-Jung

2016-01-01

Drawing while listening to music provides an opportunity for students to imagine and associate, leading to holistic listening experience. The personal qualitative listening experience triggered by music can be revealed in their drawings. In the process of representing of the listening experience through drawing, students can also increase their…
The Trouble with Unifying Narratives: African Americans and the Civil Rights Movement in U.S. History Content Standards

ERIC Educational Resources Information Center

Anderson, Carl B.

2013-01-01

This textual analysis is a collective case study of K-12 United States History content standards in light of how they represent the historical experiences of African Americans during the Civil Rights Movement. The study uses a multi-perspective critical conceptual framework to evaluate the standards for nine state-level polities on both the…
Education and Training for 16-18 Year Olds in England and Wales. Individual Paths and National Trends.

ERIC Educational Resources Information Center

Payne, Joan; Cheng, Yuan; Witherspoon, Sharon

This book describes the experiences of a series of five nationally representative cohorts of young people reaching school-leaving age between 1986 and 1993 who were surveyed as part of the continuing England and Wales Youth Cohort Study. The cohort study charts the path taken by young people over the first 3 years after compulsory education. Part…
Prevalence Study of the Risk of Burns in the Public Schools Population in Charleston, South Carolina (Under the Direction of Stanley Schuman).

ERIC Educational Resources Information Center

Littlefield, Charlyne Butler

This Charleston Burn Study was designed to determine the prevalence of the burn risks in the public school population in Charleston, South Carolina. Twelve schools representing a cross section of urban, suburban, rural and military populations participated in the project. Students completed forms that revealed their experience with burns and…
The Basic Skills of Young Adults. Some Findings from the 1970 British Cohort Study.

ERIC Educational Resources Information Center

Ekinsmyth, Carol; Bynner, John

A representative sample of 1,650 members of the 1970 British Cohort Study were surveyed at the age of 21 (in 1992) to gather information on their education, training, and employment experiences after the age of 16 and their self-assessed literacy and numeracy. Respondents also completed a half-hour assessment of their literacy and numeracy skills.…
The Other Voices of International Higher Education: An Empirical Study of Students' Perceptions of British University Education in China

ERIC Educational Resources Information Center

Moufahim, Mona; Lim, Ming

2015-01-01

Against a backdrop of globalised higher education (HE)--one in which a number of British universities are setting up campuses overseas--China represents a vast and lucrative market. This paper presents data on the perceptions and experiences of 20 Chinese students who are currently studying at a British university's campus located in China.…
The Use of Avatars in Gender Segregated Online Learning within MOOCs in Saudi Arabia--A Rwaq Case Study

ERIC Educational Resources Information Center

Adham, Raniah; Parslow, Pat; Dimitriadi, Yota; Lundqvist, Karsten Øster

2018-01-01

In Saudi Arabia, gender-segregation is a known issue within higher education that often deprives female tutors from providing online learning and Massive Open Online Courses (MOOCs). As well, students may not be getting the benefit of their experience and teaching. The purpose of this study is to develop an Avatar tool to represent a female tutor…
EHF channel sounding for telecommunications applications via HAPs and balloons

NASA Astrophysics Data System (ADS)

Cianca, E.; Lucente, M.; Rossi, T.; Stallo, C.; Ruggieri, M.; Morelli, E.

During the last few years, the growth of innovative multimedia services demanding for more and more bandwidth have led towards the need to explore higher and higher frequency bands for communication services, such as Q-V band (35-50 GHz and 50-75 GHz, respectively) and also W band (75-110 GHz), especially for satellite applications. The Italian scientific community has so far gained a leading position in the use of higher frequency bands for satellite communications and has also funded studies for the design of communication payload in W band. To keep this leading position one fundamental step to properly design an operative communication payload is the propagation channel characterisation. Whilst there are data for characterising the propagation channel in Q-V bands, there are no experimental data for proper characterisation in W band. A feasibility study has been recently funded by the Italian Space Agency (ASI) to use a manned aircraft flying at 20 km, for preliminary channel characterisation. In this paper we investigate the possibility to use balloons for experiments aiming to collect data for channel characterisation. Main advantages and drawbacks of using this platform for the proposed experiment with respect to alternatives such as manned aircrafts and Low Earth Orbit (LEO) satellites for such a experiment are outlined. We start presenting the main results of the Aero-WAVE mission, funded by ASI and aiming to design a payload for setting up an experiment for preliminary channel characterisation of W band. This will guide us in defining the main advantages and drawbacks of the alternatives solution represented by the balloons. We can conclude that it would be possible and convenient to use balloons for the proposed experiment. Some issues arise but solutions can be easily implemented. The data that could be collected from the proposed experiment represent a very interesting results at international level for further developments in W band communications. The possibility to set-up such experiment in a short-time and low costs would be strategically important.
Interactions between Super Typhoon Megi (2010) and the Monsoon Gyre

NASA Astrophysics Data System (ADS)

Peng, M.; Li, T.; Bi, M.; Shen, X.

2015-12-01

Accurate prediction of tropical cyclone track is critical for high-impact weather preparedness, especially as the storm is near the coastal region. The track prediction for super typhoon Megi (2010) in the western Pacific was notoriously bad as most operational models predicated a mainly westward movement while Megi actually made a northward turning after it has crossed the Philippines islands. In this study, we try to understand this rather irregular motion for Megi. Examination of NCEP reanalyzed fields indicated that during this period a low-frequency (10-60-day) monsoon gyre in the vicinity of Megi may have interactions with the latter. To understand the effect of the low-frequency mode on the movement of Megi, numerical experiments were designed and conducted. The total flow from the analyzed field is separated into 1) a slowly varying background state, 2) a 10-60-day low frequency component representing the monsoon gyre, and 3) a 10-day high-pass filtered component representing Megi. In the control experiment, the total field containing all three components is used as the initial and lateral boundary conditions, and the WRF model is able to simulate Megi's sharp northward turning successfully. In the second experiment, the 10-60-day mode is removed from the initial and lateral boundary fields. In the absence of the low-frequency mode, Megi moves westward and only slightly northwestward without turning north. When the vortex representing Megi was removed, the movement of the monsoon gyre was also affected. These experiments indicated strong interactions between Megi and the monsoon gyre. The interactions and the way the monsoon gyre actually affected the track of Megi will be discussed in the presentation.
Teachers' Evaluations and Students' Achievement: A "Deviation from the Reference" Analysis

ERIC Educational Resources Information Center

Iacus, Stefano M.; Porro, Giuseppe

2011-01-01

Several studies show that teachers make use of grading practices to affect students' effort and achievement. Generally linearity is assumed in the grading equation, while it is everyone's experience that grading practices are frequently non-linear. Representing grading practices as linear can be misleading both from a descriptive and a…
School Absenteeism through the Transition to Kindergarten

ERIC Educational Resources Information Center

Ansari, Arya; Purtell, Kelly M.

2018-01-01

Using nationally representative data from the Family and Child Experiences Survey 2009 Cohort (n = 2,798), this study examined patterns of absenteeism and their consequences through the transition to kindergarten. Overall, children were less likely to be absent in kindergarten than from Head Start at ages 3 and 4. Absenteeism was fairly stable…
Undertaking Experiments in Social Sciences: Sequential, Multiple Time Series Designs for Consideration

ERIC Educational Resources Information Center

Phan, Huy P.; Ngu, Bing H.

2017-01-01

In social sciences, the use of stringent methodological approaches is gaining increasing emphasis. Researchers have recognized the limitations of cross-sectional, non-manipulative data in the study of causality. True experimental designs, in contrast, are preferred as they represent rigorous standards for achieving causal flows between variables.…
From Tyrannosaurus to Pokemon: Autonomy in the Teaching of Writing.

ERIC Educational Resources Information Center

Graham, L.

2001-01-01

Discusses action research case studies of representative children and changes to classroom teaching. Notes that children were given the opportunity to: write about things that mattered to them; write as experts; hear their writing read aloud; and experience genuine response to this writing. Finds boys made most progress when given the opportunity…
Spatial Associations for Musical Stimuli: A Piano in the Head?

ERIC Educational Resources Information Center

Lidji, Pascale; Kolinsky, Regine; Lochy, Aliette; Morais, Jose

2007-01-01

This study was aimed at examining whether pitch height and pitch change are mentally represented along spatial axes. A series of experiments explored, for isolated tones and 2-note intervals, the occurrence of effects analogous to the spatial numerical association of response codes (SNARC) effect. Response device orientation (horizontal vs.…
Citation as a Stimulus to Boost Students' Communication Skills at the English Lessons

ERIC Educational Resources Information Center

Sadykova, Aida G.; Yashina, Marianna E.; Sharafieva, Alina D.

2014-01-01

The study contemplates significance of using citation at the English lessons by exposing its advantages. Quotations represent the enormous linguistic variety, which discloses the modern language that unambiguously assists students to develop skills of oral speech. Special attention is paid to the experiment conducted at the series of lessons in…

Salience Is Only Briefly Represented: Evidence from Probe-Detection Performance

ERIC Educational Resources Information Center

Donk, Mieke; Soesman, Leroy

2010-01-01

Salient objects in the visual field tend to capture attention. The present study aimed to examine the time-course of salience effects using a probe-detection task. Eight experiments investigated how the salience of different orientation singletons affected probe reaction time as a function of stimulus onset asynchrony (SOA) between the…
Supporting Chinese Undergraduate Students in Transition at U.S. Colleges and Universities

ERIC Educational Resources Information Center

Montgomery, Kerrie A.

2017-01-01

The Chinese undergraduate student population currently represents 12.8% of all international students enrolled in the United States (Institute for International Education, 2015a). In an effort to understand the experiences of this population in their first year of college in the United States, a phenomenological study was conducted using a…
Trauma-Related Impairment in Children--A Survey in Sri Lankan Provinces Affected by Armed Conflict

ERIC Educational Resources Information Center

Elbert, Thomas; Schauer, Maggie; Schauer, Elisabeth; Huschka, Bianca; Hirth, Michael; Neuner, Frank

2009-01-01

Objectives: The present study examined traumatic experiences, PTSD, and co-morbid symptoms in relation to neuropsychological and school performance in school children affected by two decades of civil war and unrest. Method: The epidemiological survey of children's mental health included a representative sample of 420 school children. Local…
Academic Stress and Health: Exploring the Moderating Role of Personality Hardiness

ERIC Educational Resources Information Center

Hystad, Sigurd W.; Eid, Jarle; Laberg, Jon C.; Johnsen, Bjorn H.; Bartone, Paul T.

2009-01-01

Attending university is a pleasurable experience for many students. Yet for others it represents a highly stressful time of extensive studying and pressure to meet the requirements of academia. Academic stress is associated with a variety of negative outcomes such as physical illness and deteriorating mental health. This paper explores the…
Joint Book Reading and Receptive Vocabulary: A Parallel Process Model

ERIC Educational Resources Information Center

Meng, Christine

2016-01-01

The purpose of the present study was to understand the reciprocal, bidirectional longitudinal relation between joint book reading and English receptive vocabulary. To address the research goals, a nationally representative sample of Head Start children, the Head Start Family and Child Experiences Survey (2003 cohort), was used for analysis. The…
Short-term and seasonal soil nitrogen dynamics and recovery by bermudagrass irrigated with 15N labeled swine lagoon effluent

USDA-ARS?s Scientific Manuscript database

The experiment was conducted at a commercial swine operation located in Lowndes County, Mississippi in an acid Vaiden silty clay (very fine, montmorillonitic, thermic Vertic Hapludalf) used in this study is representative of the Alabama and Mississippi Blackland Prairie major land resource area. A ...
Early Word Order Representations: Novel Arguments against Old Contradictions

ERIC Educational Resources Information Center

Franck, Julie; Millotte, Severine; Lassotta, Romy

2011-01-01

One major controversy in the field of language development concerns the nature of children's early representations of word order. While studies using preferential looking methods suggest that children as early as 20 months represent word order as an abstract, grammatical property, experiments using the Weird Word Order (WWO) paradigm suggest that…
GRAPHEME-PHONEME REGULARITY AND ITS EFFECTS ON EARLY READING--A PILOT STUDY.

ERIC Educational Resources Information Center

FRANKENSTEIN, ROSELYN; KJELDERGAARD, PAUL M.

A PILOT EXPERIMENT CONDUCTED TO TEST THE EFFECT OF A SPECIALLY DEVISED PHONIC APPROACH TO EARLY READING IS DESCRIBED. THE PHONIC METHOD USED ACHIEVED SOUND-SYMBOL REGULARITY AND HAD THE FOLLOWING CHARACTERISTICS--(1) CONSONANT GRAPHEMES EACH REPRESENTED ONLY ONE SOUND AND WERE PRINTED USING NEARLY STANDARD ALPHABETIC SYMBOLS. (2) EACH VOWEL…
College Students' Perceptions of and Experiences with Human Papillomavirus and Herpes: Implications for College Sexual Health Education

ERIC Educational Resources Information Center

Hirschler, Christopher; Hope, Andrea; Myers, Jaime L.

2015-01-01

Sexually transmitted infections spread through skin-to-skin contact represent unique prevention challenges. This study examines how college students perceive safer sex practices with respect to human papillomavirus (HPV) and herpes. Qualitative and quantitative data (n = 275) were collected using an online questionnaire. College students'…
Data Tables for FACES 2006: A Year in Head Start Report. ACF-ORPRE Report

ERIC Educational Resources Information Center

Hulsey, Lara; Aikens, Nikki; Xue, Yange; Tarullo, Louisa; West, Jerry

2010-01-01

The Head Start Family and Child Experiences Survey (FACES) was first launched in 1997 as a periodic longitudinal study of program performance. Successive nationally representative samples of Head Start children, their families, classrooms, and programs provide descriptive information on the population served; staff qualifications, credentials,…
Using Field Experiences to Study the Land-Use Legacy

ERIC Educational Resources Information Center

Brady, Joseph K.; Brady, Jody C.

2009-01-01

The current rapid decline of Earth's biodiversity represents an enormous crisis for humanity. Among the factors producing declines in biodiversity, changes in land use may have the greatest effect in the near term. It is well known that land-use history produces strong, lingering effects on biodiversity. This phenomenon has become known as the…
Changes in Student Teachers' Intention to Teach during Student Teaching

ERIC Educational Resources Information Center

Roberts, T. Grady; Greiman, Bradley C.; Murphy, T. H.; Ricketts, John C.; Harlin, Julie F.; Briers, Gary E.

2009-01-01

Over the course of the student teaching experience, a student teacher's intention to teach can increase, decrease, or remain the same. The purpose of this study was to explore differences in student teachers that were representative of each category. Teaching intention of 103 student teachers at four universities in 2005-2006 exhibited little…
The Evolution of New Teacher Induction Policy: Support, Specificity, and Autonomy

ERIC Educational Resources Information Center

Bartlett, Lora; Johnson, Lisa S.

2010-01-01

This article analyzes the findings from a three-state study of teacher induction policy. It looks within and across Illinois, Ohio, and Wisconsin to explore the landscape and experience of teacher induction. Although the orientation and conception of each state's policy is similar, the states represent three different structural approaches to…
Conceptions of Research: The Doctoral Student Experience in Three Domains

ERIC Educational Resources Information Center

Stubb, Jenni; Pyhältö, Kirsi; Lonka, Kirsti

2014-01-01

This study investigates how doctoral students perceive research work in the context of their own PhD projects. Thirty-two students from a Finnish university were interviewed, representing three disciplines: medicine, natural sciences and behavioural sciences. Their conceptions of research varied in terms of describing research as "a job to…
Indigenizing Leadership Concepts through Perspectives of Native American College Students

ERIC Educational Resources Information Center

Williams, Robin Starr

2012-01-01

The findings from this study were that the Native student leaders in Native student organization (NSO) have been impacted by their experiences in ways that were rewarding, supportive and increased participation. The benefits found from being in a NSO included communicating and networking, building a community on campus, representing Native…
General Education Models: Continuity and Change in the U.S. Undergraduate Curriculum, 1975-2000

ERIC Educational Resources Information Center

Brint, Steven; Proctor, Kristopher; Murphy, Scott Patrick; Turk-Bicakci, Lori; Hanneman, Robert A.

2009-01-01

General education requirements comprise, on average, approximately 30% of the undergraduate curriculum and therefore represent an important feature of the student academic experience in American colleges and universities. Previous studies have not fully examined the origins of the most important models of general education, the distribution of…
Nothing about Us without Us! Youth-Led Solutions to Improve High School Completion Rates

ERIC Educational Resources Information Center

Chou, Fred; Kwee, Janelle; Lees, Robert; Firth, Kara; Florence, Jordan; Harms, Jake; Raber, Mya; Stevens, Taylor; Tatomir, Richard; Weaver, Chereca; Wilson, Scott

2015-01-01

This Youth Participatory Action Research (YPAR) study represents a collaboration with six students from alternative education to inquire about the experiences of vulnerable youth--students in alternative education and youth who have dropped out of school. Utilizing the Enhanced Critical Incident Technique, youth researchers asked their peers what…
Culminating Experience Empirical and Theoretical Research Projects, University of Tennessee at Chattanooga, Spring, 2005

ERIC Educational Resources Information Center

Watson, Sandy White, Ed.

2005-01-01

This document represents a sample collection of master's theses from the University of Tennessee at Chattanooga's Teacher Education Program, spring semester, 2005. The majority of these student researchers were simultaneously student teaching while writing their theses. Studies were empirical and conceptual in nature and demonstrate some ways in…
Iron bioavailability studies of the first generation of iron-biofortified beans released in Rwanda

USDA-ARS?s Scientific Manuscript database

This paper represents a series of in vitro Fe bioavailability experiments, Fe content analysis and polyphenolic profile of the first generation of Fe biofortified beans (Phaseolus vulgaris) selected for human trials in Rwanda and released to farmers of that region. The objective of the present stud...
Member Perceptions of Informal Science Institution Graduate Certificate Program: Case Study of a Community of Practice

ERIC Educational Resources Information Center

Ball, Lois A.

2012-01-01

This research attempted to understand the experiences of a cohort of informal and formal science educators and informal science institution (ISI) community representatives during and after completion of a pilot graduate certificate program. Informal science educators (ISEs) find limited opportunities for professional development and support which…

(Re)Presenting in a Global Village: Students of Color and the Study Abroad International Experience

ERIC Educational Resources Information Center

Davis-White Eyes, Allison

2013-01-01

Post-secondary education institutions across the United States are increasingly allocating resources to promote international education exchange programs as a pedagogical praxis to develop students into global citizens. Underlying such notions of global citizenship is the assumption that students will also develop a stronger post-national or…
SURFACTANT ENHANCED RECOVERY OF TETRACHLOROETHYLENE FROM A POROUS MEDIUM CONTAINING LOW PERMEABILITY LENSES. 1. EXPERIMENTAL STUDIES. (R825409)

EPA Science Inventory

Abstract
A matrix of batch, column and two-dimensional (2-D) box experiments was conducted to investigate the coupled effects of rate-limited solubilization and layering on the entrapment and subsequent recovery of a representative dense NAPL, tetrachloroethylene (PCE)...
The Protective Role of Religious Involvement in African American and Caribbean Black Adolescents' Experiences of Racial Discrimination

ERIC Educational Resources Information Center

Butler-Barnes, Sheretta T.; Martin, Pamela P.; Copeland-Linder, Nikeea; Seaton, Eleanor K.; Matusko, Niki; Caldwell, Cleopatra H.; Jackson, James S.

2018-01-01

For many Black adolescents, racial discrimination increases the risk of developing adverse psychological outcomes. The purpose of this study is to investigate the interrelationships among religious involvement, racial discrimination, and psychological outcomes among a nationally representative sample of African American adolescents and Caribbean…
Mathematics Teaching in Four European Countries

ERIC Educational Resources Information Center

Andrews, Paul; Sayers, Judy

2006-01-01

This article discusses a comparative study, funded by the European Union, of the teaching of mathematics in five European countries, (Flanders, England, Finland, Hungary and Spain) to students in the upper primary (ages 10-12) and lower secondary (12-14) years. These ages were chosen as they represent a time when many students' experiences of…
Utilizing Qualitative Feedback to Investigate Student Perceptions of a Basic Instruction Program

ERIC Educational Resources Information Center

Russell, Jared A.

2008-01-01

This research represents the perceptions of two hundred (N = 200) students enrolled in a doctoral-research university's basic instruction program (BIP) regarding their instructional experiences. The purpose of this interpretive case-study conducted in a doctoral-research university's BIP was two-fold: (a) to examine the characteristics of…
Narratives of Female ROTC Student-Cadets in the Postmodern University

ERIC Educational Resources Information Center

Fairfield-Artman, Patricia

2010-01-01

This qualitative narrative study presents the interpreted experiences of seventeen female ROTC student-cadets enrolled in one of five traditional universities (as opposed to military institutions) located in the southeast U.S. I create a theoretical framework of four metaphors to represent university students and ROTC young women student-cadets;…
Adolescent Behavioral, Affective, and Cognitive Engagement in School: Relationship to Dropout

ERIC Educational Resources Information Center

Archambault, Isabelle; Janosz, Michel; Morizot, Julien; Pagani, Linda

2009-01-01

Background: High school dropout represents an important public health issue. This study assessed the 3 distinct dimensions of student engagement in high school and examined the relationships between the nature and course of such experiences and later dropout. Methods: We administered questionnaires to 13,330 students (44.7% boys) from 69 high…
Generalized Subset Designs in Analytical Chemistry.

PubMed

Surowiec, Izabella; Vikström, Ludvig; Hector, Gustaf; Johansson, Erik; Vikström, Conny; Trygg, Johan

2017-06-20

Design of experiments (DOE) is an established methodology in research, development, manufacturing, and production for screening, optimization, and robustness testing. Two-level fractional factorial designs remain the preferred approach due to high information content while keeping the number of experiments low. These types of designs, however, have never been extended to a generalized multilevel reduced design type that would be capable to include both qualitative and quantitative factors. In this Article we describe a novel generalized fractional factorial design. In addition, it also provides complementary and balanced subdesigns analogous to a fold-over in two-level reduced factorial designs. We demonstrate how this design type can be applied with good results in three different applications in analytical chemistry including (a) multivariate calibration using microwave resonance spectroscopy for the determination of water in tablets, (b) stability study in drug product development, and (c) representative sample selection in clinical studies. This demonstrates the potential of generalized fractional factorial designs to be applied in many other areas of analytical chemistry where representative, balanced, and complementary subsets are required, especially when a combination of quantitative and qualitative factors at multiple levels exists.
Graph processing platforms at scale: practices and experiences

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

Lim, Seung-Hwan; Lee, Sangkeun; Brown, Tyler C

2015-01-01

Graph analysis unveils hidden associations of data in many phenomena and artifacts, such as road network, social networks, genomic information, and scientific collaboration. Unfortunately, a wide diversity in the characteristics of graphs and graph operations make it challenging to find a right combination of tools and implementation of algorithms to discover desired knowledge from the target data set. This study presents an extensive empirical study of three representative graph processing platforms: Pegasus, GraphX, and Urika. Each system represents a combination of options in data model, processing paradigm, and infrastructure. We benchmarked each platform using three popular graph operations, degree distribution,more » connected components, and PageRank over a variety of real-world graphs. Our experiments show that each graph processing platform shows different strength, depending the type of graph operations. While Urika performs the best in non-iterative operations like degree distribution, GraphX outputforms iterative operations like connected components and PageRank. In addition, we discuss challenges to optimize the performance of each platform over large scale real world graphs.« less
Somatic and vicarious pain are represented by dissociable multivariate brain patterns

PubMed Central

Krishnan, Anjali; Woo, Choong-Wan; Chang, Luke J; Ruzic, Luka; Gu, Xiaosi; López-Solà, Marina; Jackson, Philip L; Pujol, Jesús; Fan, Jin; Wager, Tor D

2016-01-01

Understanding how humans represent others’ pain is critical for understanding pro-social behavior. ‘Shared experience’ theories propose common brain representations for somatic and vicarious pain, but other evidence suggests that specialized circuits are required to experience others’ suffering. Combining functional neuroimaging with multivariate pattern analyses, we identified dissociable patterns that predicted somatic (high versus low: 100%) and vicarious (high versus low: 100%) pain intensity in out-of-sample individuals. Critically, each pattern was at chance in predicting the other experience, demonstrating separate modifiability of both patterns. Somatotopy (upper versus lower limb: 93% accuracy for both conditions) was also distinct, located in somatosensory versus mentalizing-related circuits for somatic and vicarious pain, respectively. Two additional studies demonstrated the generalizability of the somatic pain pattern (which was originally developed on thermal pain) to mechanical and electrical pain, and also demonstrated the replicability of the somatic/vicarious dissociation. These findings suggest possible mechanisms underlying limitations in feeling others’ pain, and present new, more specific, brain targets for studying pain empathy. DOI: http://dx.doi.org/10.7554/eLife.15166.001 PMID:27296895
The cardioprotective and antiarrhythmic effects of Nardostachys chinensis in animal and cell experiments.

PubMed

Li, Min; Xu, Xue; Yang, Xinyu; Kwong, Joey S W; Shang, Hongcai

2017-08-10

Cardiovascular disease (CVD) is the leading cause of premature death throughout the world. An estimated 17.5 million people died from CVD in 2012, representing 31% of all global deaths. Nardostachys chinensis (NC), a typical traditional Chinese medicine (TCM), plays a crucial role in the management of patients with CVD, especially for those with cardiac arrhythmia. The purpose of this study was to evaluate the cardioprotective and antiarrhythmic effects of NC in animal and cell experiments. To review the cardioprotective and antiarrhythmic effects of NC, studies of NC on cardiovascular diseases in animal and cell experiments were identified from five databases through April 2016. Two investigators independently conducted the literature search, study selection, and data extraction. A total of 16 studies were identified, including five animal experiments and eleven cell experiments. Four studies showed significant effects of NC on myocardial protection by inhibiting myocardial apoptosis, inflammation and oxidative stress. Twelve studies indicated significant beneficial effects of NC in cardiac arrhythmia primarily through the modulation of ion channels (I k , I k1 , I Na , I Ca-L , I to ). The above findings showed the possible efficacy of NC via its cardioprotective and antiarrhythmic effects, but the results should be interpreted with caution due to the limitations and the deficiencies in the studies.
Separation of toxic rhodamine B from aqueous solution using an efficient low-cost material, Azolla pinnata, by adsorption method.

PubMed

Kooh, Muhammad Raziq Rahimi; Lim, Linda B L; Lim, Lee Hoon; Dahri, Muhammad Khairud

2016-02-01

This study investigated the potential of untreated Azolla pinnata (AP) to remove toxic rhodamine B (RB) dye. The effects of adsorbent dosage, pH, ionic strength, contact time, and concentration were studied. Experiments involving the effects of pH and ionic strength indicated that hydrophobic-hydrophobic interactions might be the dominant force of attraction for the RB-AP adsorption system. The kinetics modelling of the kinetics experiment showed that pseudo-second-order best represented the adsorption process. The Weber-Morris intraparticle diffusion model showed that intraparticle diffusion is not the rate-limiting step, while the Boyd model suggested that film diffusion might be rate-limiting. The adsorption isotherm model, Langmuir, best represented the adsorption process, and the maximum adsorption capacity was predicted to be 72.2 and 199.7 mg g(-1) at 25 and 65 °C, respectively. Thermodynamics study indicates spontaneity, endothermic and physisorption-dominant adsorption process. The adsorbents were regenerated to satisfactory level with distilled water, HNO3 and NaOH. Pre-treatment of adsorbent with oxalic acid, citric acid, NaOH, HCl and phosphoric acid was investigated but the adsorption capacity was less than the untreated AP.
Gender differences in the associations of gambling activities and suicidal behaviors with problem gambling in a nationally representative French sample.

PubMed

Husky, Mathilde M; Michel, Grégory; Richard, Jean-Baptiste; Guignard, Romain; Beck, François

2015-06-01

The objectives of the present study are to describe gender differences in factors associated with moderate risk and problem gambling. Data were extracted from the 2010 Health Barometer, a large survey on a representative sample of the general population aged 15-85 years living in France (n=27,653), carried out by the National Institute for Health Promotion and Health Education. Data were collected between October 2009 and July 2010. A computer-assisted telephone interview system was used. The findings indicate that men are three times more likely to experience problems with gambling. Men and women have different patterns of gambling activities. Men were more involved with Rapido, internet gambling, sports and racetrack betting, poker, and casino tables, whereas women gambled more often on scratch games. Both men and women engaging in immediate reward games were significantly more likely to experience difficulties with gambling. This association, however, was stronger in women. Furthermore, suicidal ideation and behaviors were more likely to be associated with gambling problems in women as compared to men. The study underscores the importance of considering gender-related differences in the study of gambling behaviors. Copyright © 2015 Elsevier Ltd. All rights reserved.
A Quantum-Based Similarity Method in Virtual Screening.

PubMed

Al-Dabbagh, Mohammed Mumtaz; Salim, Naomie; Himmat, Mubarak; Ahmed, Ali; Saeed, Faisal

2015-10-02

One of the most widely-used techniques for ligand-based virtual screening is similarity searching. This study adopted the concepts of quantum mechanics to present as state-of-the-art similarity method of molecules inspired from quantum theory. The representation of molecular compounds in mathematical quantum space plays a vital role in the development of quantum-based similarity approach. One of the key concepts of quantum theory is the use of complex numbers. Hence, this study proposed three various techniques to embed and to re-represent the molecular compounds to correspond with complex numbers format. The quantum-based similarity method that developed in this study depending on complex pure Hilbert space of molecules called Standard Quantum-Based (SQB). The recall of retrieved active molecules were at top 1% and top 5%, and significant test is used to evaluate our proposed methods. The MDL drug data report (MDDR), maximum unbiased validation (MUV) and Directory of Useful Decoys (DUD) data sets were used for experiments and were represented by 2D fingerprints. Simulated virtual screening experiment show that the effectiveness of SQB method was significantly increased due to the role of representational power of molecular compounds in complex numbers forms compared to Tanimoto benchmark similarity measure.
International experiences in nursing education: a review of the literature.

PubMed

Kulbok, Pamela A; Mitchell, Emma M; Glick, Doris F; Greiner, Doris

2012-04-24

Service learning and study abroad opportunities have become increasingly popular in nursing education in the past decade. The purpose of this systematic review was to explore existing literature concerning global health experiences in nursing education. Twenty-three empirical articles from 2003 to 2010 were reviewed, building upon existing reviews of international nursing education literature. Research on two-way exchange experiences and models for best practice were found to be lacking. While an array of countries were represented as the visiting or hosting side of the experience, few co-authors from host countries were found, particularly in literature originating from the U.S. The authors recommend that two-way exchange programs be evaluated to identify successful strategies and barriers to success. Ongoing evaluation of exchanges is necessary to ensure continued sustainable partnership and exchange in immersion experiences for nursing students.
Narrating Embodied Experience: Sharing Stories of Trauma and Recovery

ERIC Educational Resources Information Center

Carless, David; Douglas, Kitrina

2016-01-01

In this paper, we explore our use of a dialogical storytelling approach to alleviate some of the tensions involved in researching another person's embodied experience. These tensions concern the problems of (a) how to "access" another's embodied experience and (b) how to "represent" that experience. We consider these issues…
Category labels versus feature labels: category labels polarize inferential predictions.

PubMed

Yamauchi, Takashi; Yu, Na-Yung

2008-04-01

What makes category labels different from feature labels in predictive inference? This study suggests that category labels tend to make inductive reasoning polarized and homogeneous. In two experiments, participants were shown two schematic pictures of insects side by side and predicted the value of a hidden feature of one insect on the basis of the other insect. Arbitrary verbal labels were shown above the two pictures, and the meanings of the labels were manipulated in the instructions. In one condition, the labels represented the category membership of the insects, and in the other conditions, the same labels represented attributes of the insects. When the labels represented category membership, participants' responses became substantially polarized and homogeneous, indicating that the mere reference to category membership can modify reasoning processes.
Development of Saccade Length Index of Taskload for Biocybernetic Application

DTIC Science & Technology

1989-01-31

from the casali-Wierwille studies , where the indicants have been classified into four groups : judgment, vision, other physiological, and task (primary...EXPERIMENTS From 1983 85. casali and Wlerwille published four studies on indicants of workload which together ronstitute a landmaik in the field. All...these four categories. What we see is not a representative figure but the most that t n be ,xpected of the Indicants that Casali and Wierville studied
University Students with Dyslexia: A Qualitative Exploratory Study of Learning Practices, Challenges and Strategies.

PubMed

MacCullagh, Lois; Bosanquet, Agnes; Badcock, Nicholas A

2017-02-01

People with dyslexia are vastly under-represented in universities (Katusic et al., , Richardson & Wydell, ; Stampoltzis & Polychronopoulou, ). This situation is of concern for modern societies that value social justice. This study was designed to explore learning experiences of university students with dyslexia and factors that could contribute to their success. Thirteen students with dyslexia and 20 non-dyslexic peers were interviewed about their university learning experiences using a semi-structured qualitative approach. Students with dyslexia described engaging in learning activities intensively, frequently and strategically. They reported challenges and strengths relating to study skills, lectures, assessments, technology and support services. They also described helpful strategies including self-directed adaptive techniques, provisions from lecturers and assistance from the university. These findings suggest that students with dyslexia experience broad challenges at university, but helpful strategies may be available. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.
The IMISS-1 Experiment for Recording and Analysis of Accelerations in Orbital Flight

NASA Astrophysics Data System (ADS)

Sadovnichii, V. A.; Alexandrov, V. V.; Bugrov, D. I.; Lemak, S. S.; Pakhomov, V. B.; Panasyuk, M. I.; Petrov, V. L.; Yashin, I. V.

2018-03-01

The IMISS-1 experiment represents the second step in solving the problem of the creation of the gaze stabilization corrector. This device is designed to correct the effect of the gaze stabilization delay under microgravity. IMISS-1 continues research started by the Tat'yana-2 satellite. This research will be continued on board the International Space Station. At this stage we study the possibility of registration of angular and linear accelerations acting on the sensitive mass in terms of Low Earth Orbit flight, using MEMS sensors.

Kotov collects data for the Cardiocog-2 Experiment in the SM during Expedition 15

NASA Image and Video Library

2007-05-01

ISS015-E-08661 (May 2007) --- Cosmonaut Oleg V. Kotov, Expedition 15 flight engineer representing Russia's Federal Space Agency, collects medical data for the Cognitive Cardiovascular (Cardiocog-2) experiment in the Zvezda Service Module of the International Space Station. Cardiocog-2 will determine the impact of weightlessness on the cardiovascular system and respiratory system and the cognitive reactions of crewmembers. The results of this study will be used to develop additional countermeasures that will continue to keep crewmembers healthy during long-duration space exploration.
Kotov collects data for the Cardiocog-2 Experiment in the SM during Expedition 15

NASA Image and Video Library

2007-05-01

ISS015-E-08660 (May 2007) --- Cosmonaut Oleg V. Kotov, Expedition 15 flight engineer representing Russia's Federal Space Agency, collects medical data for the Cognitive Cardiovascular (Cardiocog-2) experiment in the Zvezda Service Module of the International Space Station. Cardiocog-2 will determine the impact of weightlessness on the cardiovascular system and respiratory system and the cognitive reactions of crewmembers. The results of this study will be used to develop additional countermeasures that will continue to keep crewmembers healthy during long-duration space exploration.
Kotov collects data for the Cardiocog-2 Experiment in the SM during Expedition 15

NASA Image and Video Library

2007-05-01

ISS015-E-08659 (May 2007) --- Cosmonaut Oleg V. Kotov, Expedition 15 flight engineer representing Russia's Federal Space Agency, checks procedures checklists while collecting medical data for the Cognitive Cardiovascular (Cardiocog-2) experiment in the Zvezda Service Module of the International Space Station. Cardiocog-2 will determine the impact of weightlessness on the cardiovascular system and respiratory system and the cognitive reactions of crewmembers. The results of this study will be used to develop additional countermeasures that will continue to keep crewmembers healthy during long-duration space exploration.
Shared Etiology of Psychotic Experiences and Depressive Symptoms in Adolescence: A Longitudinal Twin Study.

PubMed

Zavos, Helena M S; Eley, Thalia C; McGuire, Philip; Plomin, Robert; Cardno, Alastair G; Freeman, Daniel; Ronald, Angelica

2016-09-01

Psychotic disorders and major depression, both typically adult-onset conditions, often co-occur. At younger ages psychotic experiences and depressive symptoms are often reported in the community. We used a genetically sensitive longitudinal design to investigate the relationship between psychotic experiences and depressive symptoms in adolescence. A representative community sample of twins from England and Wales was employed. Self-rated depressive symptoms, paranoia, hallucinations, cognitive disorganization, grandiosity, anhedonia, and parent-rated negative symptoms were collected when the twins were age 16 (N = 9618) and again on a representative subsample 9 months later (N = 2873). Direction and aetiology of associations were assessed using genetically informative cross-lagged models. Depressive symptoms were moderately correlated with paranoia, hallucinations, and cognitive disorganization. Lower correlations were observed between depression and anhedonia, and depression and parent-rated negative symptoms. Nonsignificant correlations were observed between depression and grandiosity. Largely the same genetic effects influenced depression and paranoia, depression and hallucinations, and depression and cognitive disorganization. Modest overlap in environmental influences also played a role in the associations. Significant bi-directional longitudinal associations were observed between depression and paranoia. Hallucinations and cognitive disorganization during adolescence were found to impact later depression, even after controlling for earlier levels of depression. Our study shows that psychotic experiences and depression, as traits in the community, have a high genetic overlap in mid-adolescence. Future research should test the prediction stemming from our longitudinal results, namely that reducing or ameliorating positive and cognitive psychotic experiences in adolescence would decrease later depressive symptoms. © The Author 2016. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center.
A formal concept analysis approach to consensus clustering of multi-experiment expression data

PubMed Central

2014-01-01

Background Presently, with the increasing number and complexity of available gene expression datasets, the combination of data from multiple microarray studies addressing a similar biological question is gaining importance. The analysis and integration of multiple datasets are expected to yield more reliable and robust results since they are based on a larger number of samples and the effects of the individual study-specific biases are diminished. This is supported by recent studies suggesting that important biological signals are often preserved or enhanced by multiple experiments. An approach to combining data from different experiments is the aggregation of their clusterings into a consensus or representative clustering solution which increases the confidence in the common features of all the datasets and reveals the important differences among them. Results We propose a novel generic consensus clustering technique that applies Formal Concept Analysis (FCA) approach for the consolidation and analysis of clustering solutions derived from several microarray datasets. These datasets are initially divided into groups of related experiments with respect to a predefined criterion. Subsequently, a consensus clustering algorithm is applied to each group resulting in a clustering solution per group. These solutions are pooled together and further analysed by employing FCA which allows extracting valuable insights from the data and generating a gene partition over all the experiments. In order to validate the FCA-enhanced approach two consensus clustering algorithms are adapted to incorporate the FCA analysis. Their performance is evaluated on gene expression data from multi-experiment study examining the global cell-cycle control of fission yeast. The FCA results derived from both methods demonstrate that, although both algorithms optimize different clustering characteristics, FCA is able to overcome and diminish these differences and preserve some relevant biological signals. Conclusions The proposed FCA-enhanced consensus clustering technique is a general approach to the combination of clustering algorithms with FCA for deriving clustering solutions from multiple gene expression matrices. The experimental results presented herein demonstrate that it is a robust data integration technique able to produce good quality clustering solution that is representative for the whole set of expression matrices. PMID:24885407
Auditory traits of "own voice".

PubMed

Kimura, Marino; Yotsumoto, Yuko

2018-01-01

People perceive their recorded voice differently from their actively spoken voice. The uncanny valley theory proposes that as an object approaches humanlike characteristics, there is an increase in the sense of familiarity; however, eventually a point is reached where the object becomes strangely similar and makes us feel uneasy. The feeling of discomfort experienced when people hear their recorded voice may correspond to the floor of the proposed uncanny valley. To overcome the feeling of eeriness of own-voice recordings, previous studies have suggested equalization of the recorded voice with various types of filters, such as step, bandpass, and low-pass, yet the effectiveness of these filters has not been evaluated. To address this, the aim of experiment 1 was to identify what type of voice recording was the most representative of one's own voice. The voice recordings were presented in five different conditions: unadjusted recorded voice, step filtered voice, bandpass filtered voice, low-pass filtered voice, and a voice for which the participants freely adjusted the parameters. We found large individual differences in the most representative own-voice filter. In order to consider roles of sense of agency, experiment 2 investigated if lip-synching would influence the rating of own voice. The result suggested lip-synching did not affect own voice ratings. In experiment 3, based on the assumption that the voices used in previous experiments corresponded to continuous representations of non-own voice to own voice, the existence of an uncanny valley was examined. Familiarity, eeriness, and the sense of own voice were rated. The result did not support the existence of an uncanny valley. Taken together, the experiments led us to the following conclusions: there is no general filter that can represent own voice for everyone, sense of agency has no effect on own voice rating, and the uncanny valley does not exist for own voice, specifically.
Whose voices? Patient and public involvement in clinical commissioning.

PubMed

O'Shea, Alison; Chambers, Mary; Boaz, Annette

2017-06-01

This paper aims to explore patient and public representation in a NHS clinical commissioning group and how this is experienced by staff and lay members involved. Patient and public involvement is believed to foster greater public representativeness in the development and delivery of health care services. However, there is widespread debate about what representation is or what it should be. Questions arise about the different constructions of representation and the representativeness of patients and the public in decision-making structures and processes. Ethnographic, two-phase study involving twenty-four observations across two types of clinical commissioning group meetings with patient and public involvement, fourteen follow-up interviews with NHS staff and lay members, and a focus group with five lay members. Perceptions of what constitutes legitimate representativeness varied between respondents, ranging from representing an individual patient experience to reaching large numbers of people. Consistent with previous studies, there was a lack of clarity about the role of lay members in the work of the clinical commissioning group. Unlike previous studies, it was lay members, not staff, who raised concerns about their representativeness and legitimacy. Although the clinical commissioning group provides resources to support patient and public involvement, there continues to be a lack of clarity about roles and scope for impact. Lay members are still some way from constituting a powerful voice at the table. © 2016 The Authors. Health Expectations Published by John Wiley & Sons Ltd.
A space station Structures and Assembly Verification Experiment, SAVE

NASA Technical Reports Server (NTRS)

Russell, R. A.; Raney, J. P.; Deryder, L. J.

1986-01-01

The Space Station structure has been baselined to be a 5 M (16.4 ft) erectable truss. This structure will provide the overall framework to attach laboratory modules and other systems, subsystems and utilities. The assembly of this structure represents a formidable EVA challenge. To validate this capability the Space Station Structures/Dynamics Technical Integration Panel (TIP) met to develop the necessary data for an integrated STS structures flight experiment. As a result of this meeting, the Langley Research Center initiated a joint Langley/Boeing Aerospace Company study which supported the structures/dynamics TIP in developing the preliminary definition and design of a 5 M erectable space station truss and the resources required for a proposed flight experiment. The purpose of the study was to: (1) devise methods of truss assembly by astronauts; (2) define a specific test matrix for dynamic characterization; (3) identify instrumentation and data system requirements; (4) determine the power, propulsion and control requirements for the truss on-orbit for 3 years; (5) study the packaging of the experiment in the orbiter cargo bay; (6) prepare a preliminary cost estimate and schedule for the experiment; and (7) provide a list of potential follow-on experiments using the structure as a free flyer. The results of this three month study are presented.
Recent regulatory experience of low-Btu coal gasification. Volume III. Supporting case studies

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

Ackerman, E.; Hart, D.; Lethi, M.

The MITRE Corporation conducted a five-month study for the Office of Resource Applications in the Department of Energy on the regulatory requirements of low-Btu coal gasification. During this study, MITRE interviewed representatives of five current low-Btu coal gasification projects and regulatory agencies in five states. From these interviews, MITRE has sought the experience of current low-Btu coal gasification users in order to recommend actions to improve the regulatory process. This report is the third of three volumes. It contains the results of interviews conducted for each of the case studies. Volume 1 of the report contains the analysis of themore » case studies and recommendations to potential industrial users of low-Btu coal gasification. Volume 2 contains recommendations to regulatory agencies.« less
The Experience of Prisoners' Parents: A Meta-Synthesis of Qualitative Studies.

PubMed

Gueta, Keren

2017-08-19

The parents of prisoners have long drawn the attention of researchers, due to their role in the etiology of criminality as well as the importance of their support of their offspring during and after incarceration. However, although studies have shown that the parents of prisoners experience high levels of distress, burden, and social stigma, research into their experience is only now beginning to emerge. This metasynthesis examined the limited body of qualitative research on the experience of prisoners' parents, as an exploratory step toward advancing the understanding of their experience. Relevant terms were used to systematically search key databases. Ten small-scale studies, which varied in focus, location, and disciplinary orientation, met the inclusion criteria. The synthesis produced four core themes, reflecting findings regarding parents' (primarily mothers') experience of their offspring's incarceration: parenting from a distance; the burden of care; troubled parental identity; and social reaction. Furthermore, the findings suggested a number of possible mediating factors of this experience, such as parents' social capital and their cognitive appraisal of their offspring's criminality. These themes imply a possible experience of "imprisonment by association" among the parents of inmates and illuminate features that may be unique to them. Given the inherent limitations regarding generalizability of a metasynthesis and the heterogeneity of the experiences of the parents represented by the articles reviewed, the findings call for future large-scale quantitative studies to explore the challenges and therapeutic needs of parents of prisoners regarding the themes identified. © 2017 Family Process Institute.
Summary of the Workshop on Molten Salt Reactor Technologies Commemorating the 50th Anniversary of the Startup of the Molten Salt Reactor Experiment

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

Betzler, Benjamin R; Mays, Gary T

2016-01-01

A workshop on Molten Salt Reactor (MSR) technologies commemorating the 50th anniversary of the Molten Salt Reactor Experiment (MSRE) was held at Oak Ridge National Laboratory on October 15 16, 2015. The MSRE represented a pioneering experiment that demonstrated an advanced reactor technology: the molten salt eutectic-fueled reactor. A multinational group of more than 130 individuals representing a diverse set of stakeholders gathered to discuss the historical, current, and future technical challenges and paths to deployment of MSR technology. This paper provides a summary of the key messages from this workshop.
A co-ordinated and synergistic analysis strategy for future ground-based and space helioseismology

NASA Technical Reports Server (NTRS)

Ulrich, Roger K.

1991-01-01

The variety of helioseismology observational programs planned for the mid-1990s represents an unprecedented opportunity to improve understanding of the solar interior. This review discusses the coordination of the GONG, IRIS, Birmingham and other ground-based observational programs with the space experiments on the SOHO mission: GOLF, VIRGO, and MDI. The integration and coordination of the different data streams in terms of the spatial and temporal coverage as well as the implications of the different spectral resolution and stability characteristics of each experiment are discussed. The study of the effect of active regions on various helioseismology signals is presented as an example of how ground-based and space experiments can be coordinated.
Telescience testbed pilot program, volume 3: Experiment summaries

NASA Technical Reports Server (NTRS)

Leiner, Barry M.

1989-01-01

Space Station Freedom and its associated labs, coupled with the availability of new computing and communications technologies, have the potential for significantly enhancing scientific research. A Telescience Testbed Pilot Program (TTPP), aimed at developing the experience base to deal with issues in the design of the future information system of the Space Station era. The testbeds represented four scientific disciplines (astronomy and astrophysics, earth science, life sciences, and microgravity sciences) and studied issues in payload design, operation, and data analysis. This volume, of a 3 volume set, which all contain the results of the TTPP, presents summaries of the experiments. This experiment involves the evaluation of the current Internet for the use of file and image transfer between SIRTF instrument teams. The main issue addressed was current network response times.
Autogenic training alters cerebral activation patterns in fMRI.

PubMed

Schlamann, Marc; Naglatzki, Ryan; de Greiff, Armin; Forsting, Michael; Gizewski, Elke R

2010-10-01

Cerebral activation patterns during the first three auto-suggestive phases of autogenic training (AT) were investigated in relation to perceived experiences. Nineteen volunteers trained in AT and 19 controls were studied with fMRI during the first steps of autogenic training. FMRI revealed activation of the left postcentral areas during AT in those with experience in AT, which also correlated with the level of AT experience. Activation of prefrontal and insular cortex was significantly higher in the group with experience in AT while insular activation was correlated with number years of simple relaxation exercises. Specific activation in subjects experienced in AT may represent a training effect. Furthermore, the correlation of insular activation suggests that these subjects are different from untrained subjects in emotional processing or self-awareness.
Eighth Grade: First Findings from the Final Round of the Early Childhood Longitudinal Study, Kindergarten Class of 1998-99 (ECLS-K). First Look. NCES 2008-088

ERIC Educational Resources Information Center

Walston, Jill; Rathbun, Amy; Hausken, Elvira Germino

2008-01-01

This report uses data from the Early Childhood Longitudinal Study, Kindergarten Class of 1998-99 (ECLS-K) to describe the middle school experiences of the cohort. The ECLS-K followed the educational, socioemotional, and physical development of a nationally representative sample of kindergartners in public and private schools in the United States…
Exploring the Engagement of Lecturers with Learning and Teaching Agendas through a Focus on Their Beliefs about, and Experience with, Student Support

ERIC Educational Resources Information Center

Bailey, Richard

2013-01-01

This article reports on research which aimed to examine academic staff attitudes to, and beliefs regarding the role and efficacy of, support for students' broader learning needs once engaged in degree study. It is contended here that the perspective of teachers represents a gap in current pedagogical research. The study has two complementary aims:…
The Port Royal Experiment: Forty Acres and a Mule? A Unit of Study for Grades 8-12.

ERIC Educational Resources Information Center

Vigilante, David

This unit is one of a series that represents specific moments in history from which students focus on the meanings of landmark events. By studying a crucial turning-point in history, students become aware that choices had to be made by real human beings, that those decisions were the result of specific factors, and that they set in motion a series…
Education Longitudinal Study of 2002 (ELS:2002): A First Look at 2002 High School Sophomores 10 Years Later. First Look. NCES 2014-363

ERIC Educational Resources Information Center

Lauff, Erich; Ingels, Steven J.

2014-01-01

The Education Longitudinal Study of 2002 (ELS:2002) tracks the educational and developmental experiences of a nationally representative sample of high school sophomores in the United States. This First Look report provides a descriptive portrait of these 2002 tenth-graders a decade later, when most were about 26 years old and had been out of high…
Findings from the Third-Grade Round of the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011): First Look. NCES 2016-094

ERIC Educational Resources Information Center

Mulligan, Gail M.; McCarroll, Jill Carlivati; Flanagan, Kristin Denton; Potter, Daniel

2016-01-01

The Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011), is collecting information about the early educational experiences of a nationally representative sample of children who were in kindergarten or who were of kindergarten age in ungraded classrooms or schools in the 2010-11 school year. The data collection began in…
A quantitative analysis of coupled oscillations using mobile accelerometer sensors

NASA Astrophysics Data System (ADS)

Castro-Palacio, Juan Carlos; Velázquez-Abad, Luisberis; Giménez, Fernando; Monsoriu, Juan A.

2013-05-01

In this paper, smartphone acceleration sensors were used to perform a quantitative analysis of mechanical coupled oscillations. Symmetric and asymmetric normal modes were studied separately in the first two experiments. In the third, a coupled oscillation was studied as a combination of the normal modes. Results indicate that acceleration sensors of smartphones, which are very familiar to students, represent valuable measurement instruments for introductory and first-year physics courses.

Decision heuristic or preference? Attribute non-attendance in discrete choice problems.

PubMed

Heidenreich, Sebastian; Watson, Verity; Ryan, Mandy; Phimister, Euan

2018-01-01

This paper investigates if respondents' choice to not consider all characteristics of a multiattribute health service may represent preferences. Over the last decade, an increasing number of studies account for attribute non-attendance (ANA) when using discrete choice experiments to elicit individuals' preferences. Most studies assume such behaviour is a heuristic and therefore uninformative. This assumption may result in misleading welfare estimates if ANA reflects preferences. This is the first paper to assess if ANA is a heuristic or genuine preference without relying on respondents' self-stated motivation and the first study to explore this question within a health context. Based on findings from cognitive psychology, we expect that familiar respondents are less likely to use a decision heuristic to simplify choices than unfamiliar respondents. We employ a latent class model of discrete choice experiment data concerned with National Health Service managers' preferences for support services that assist with performance concerns. We present quantitative and qualitative evidence that in our study ANA mostly represents preferences. We also show that wrong assumptions about ANA result in inadequate welfare measures that can result in suboptimal policy advice. Future research should proceed with caution when assuming that ANA is a heuristic. Copyright © 2017 John Wiley & Sons, Ltd.
Religiousness, social support and subjective well-being: An exploratory study among adolescents in an Asian atheist country.

PubMed

Ju, Chengting; Zhang, Baoshan; You, Xuqun; Alterman, Valeria; Li, Yongkang

2018-04-01

Few studies have focused on the relationships among religiousness, social support and subjective well-being in Chinese adolescent populations. This study tries to fill this gap. Using cluster sampling, we selected two groups: Group A, which included 738 Tibetan adolescents with a formal religious affiliation and represented adolescents from a religious culture, and Group B, which included 720 Han adolescents without a religious affiliation and represented adolescents from an irreligious culture. Structural equation modelling showed that only in Group A did social support mediate (partially) the relationship between religious experience and subjective well-being; furthermore, the results of a hierarchical regression analysis showed that only in Group A did social support moderate the relationship between religious ideology and subjective well-being. Possible explanations for the discrepancies between the findings obtained in this study and those obtained in previous studies are discussed. © 2016 International Union of Psychological Science.
German Value Set for the EQ-5D-5L.

PubMed

Ludwig, Kristina; Graf von der Schulenburg, J-Matthias; Greiner, Wolfgang

2018-06-01

The objective of this study was to develop a value set for EQ-5D-5L based on the societal preferences of the German population. As the first country to do so, the study design used the improved EQ-5D-5L valuation protocol 2.0 developed by the EuroQol Group, including a feedback module as internal validation and a quality control process that was missing in the first wave of EQ-5D-5L valuation studies. A representative sample of the general German population (n = 1158) was interviewed using a composite time trade-off and a discrete choice experiment under close quality control. Econometric modeling was used to estimate values for all 3125 possible health states described by EQ-5D-5L. The value set was based on a hybrid model including all available information from the composite time trade-off and discrete choice experiment valuations without any exclusions due to data issues. The final German value set was constructed from a combination of a conditional logit model for the discrete choice experiment data and a censored at -1 Tobit model for the composite time trade-off data, correcting for heteroskedasticity. The value set had logically consistent parameter estimates (p < 0.001 for all coefficients). The predicted EQ-5D-5L index values ranged from -0.661 to 1. This study provided values for the health states of the German version of EQ-5D-5L representing the preferences of the German population. The study successfully employed for the first time worldwide the improved protocol 2.0. The value set enables the use of the EQ-5D-5L instrument in economic evaluations and in clinical studies.
Applying Structural Equation Modeling to Measure Violence Exposure and Its Impact on Mental Health: Malawi Violence Against Children and Young Women Survey, 2013.

PubMed

Fan, Amy Z; Liu, Jin; Kress, Howard; Gupta, Sundeep; Shawa, Mary; Wadonda-Kabondo, Nellie; Mercy, James

2017-11-01

This study examines exposure to multiple forms of violence among Malawian children and youth and their association with mental health outcomes. The Malawi Violence Against Children and Young Women Survey was conducted among a nationally representative sample of males and females aged 13 to 24 years ( n = 2,162) in Malawi in 2013. The experience of sexual, physical, and emotional violence prior to age 18 and during the past 12 months and associated health outcomes were ascertained using a comprehensive interview. Latent factors of sexual violence, physical violence, and emotional violence as well as psychological distress were constructed. We examined whether the experience of violence was related to psychological distress after controlling for age and gender. Violence exposure prior to age 18 (early life) and during the past 12 months (proximal) were valid indicators for a latent factor representing overall lifetime violence exposure. Females were more likely to experience sexual violence, whereas males were more likely to experience physical violence. Experience of any type of violence decreased with age whereas experience of psychological distress increased with age. Current psychological distress was directly associated with exposure to sexual and emotional violence recently or during childhood. Exposure to multiple forms of violence during lifetime was related to two to seven folds higher odds of experiencing psychological distress compared with those who had never experienced violence. Future intervention strategies should address three forms of violence against children simultaneously in light of the associated adverse mental health outcomes.
Advanced Experiments in Nuclear Science, Volume I: Advanced Nuclear Physics and Chemistry Experiments.

ERIC Educational Resources Information Center

Duggan, Jerome L.; And Others

The experiments in this manual represent state-of-the-art techniques which should be within the budgetary constraints of a college physics or chemistry department. There are fourteen experiments divided into five modules. The modules are on X-ray fluorescence, charged particle detection, neutron activation analysis, X-ray attenuation, and…
Thermal Energy Storage Flight Experiment in Microgravity

NASA Technical Reports Server (NTRS)

Namkoong, David

1992-01-01

The Thermal Energy Storage Flight Experiment was designed to characterize void shape and location in LiF-based phase change materials in different energy storage configurations representative of advanced solar dynamic systems. Experiment goals and payload design are described in outline and graphic form.
Reactions of Thiocyanate Ions with Acid: A Laboratory Experiment.

ERIC Educational Resources Information Center

Glidewell, Christopher; And Others

1984-01-01

Background information, procedures, and typical results are provided for a three-part experiment involving reactions of potassium thiocynate (KNCS) with sulfuric acid. The experiment represents the final stage of structured work prior to students' research projects during their final year. (JM)
Brain gene expression during REM sleep depends on prior waking experience.

PubMed

Ribeiro, S; Goyal, V; Mello, C V; Pavlides, C

1999-01-01

In most mammalian species studied, two distinct and successive phases of sleep, slow wave (SW), and rapid eye movement (REM), can be recognized on the basis of their EEG profiles and associated behaviors. Both phases have been implicated in the offline sensorimotor processing of daytime events, but the molecular mechanisms remain elusive. We studied brain expression of the plasticity-associated immediate-early gene (IEG) zif-268 during SW and REM sleep in rats exposed to rich sensorimotor experience in the preceding waking period. Whereas nonexposed controls show generalized zif-268 down-regulation during SW and REM sleep, zif-268 is upregulated during REM sleep in the cerebral cortex and the hippocampus of exposed animals. We suggest that this phenomenon represents a window of increased neuronal plasticity during REM sleep that follows enriched waking experience.
Storytelling as a teaching-learning tool with RN students.

PubMed

Branch, M; Anderson, M

1999-01-01

The Registered Nurse student returning to school brings both a knowledge base and experiences that lend themselves to enriching the learning environment. These experiences have helped to develop the practical knowledge and expertise that is evident in their practice. When these experiences are shared in the form of stories, they provide a mechanism for transformation within the learner. This study focused on the use of storytelling in teaching and empowering RN students to become involved in their own learning and fostering critical reflection. The RN students in this study represented a diverse ethnic/racial group. As a result, students were challenged to understand and manage cultural diversity and value cultural differences. The use of storytelling engaged students in reflective thinking, writing, and learning activities that identified assumptions, alternative ways of thinking, teaching, and practicing nursing.
Data-analysis issues in a phenomenographic investigation of information literacy in nursing.

PubMed

Forster, Marc

2013-11-01

To explore two contrasting methods of phenomenographic data analysis. Phenomenography is a still-uncommon but increasingly used methodology based on qualitative interviews that allows experiences to be categorised and put into a descriptive structure for use in developing educational interventions. There are two different approaches in the literature to analysing data: the Marton and Åkerlind methods. A doctoral research project investigating the role of information literacy in evidence-based practice in nursing. The phenomenographic study involves open-ended interviews in which participants are asked to describe their 'life-world' where the phenomenon is experienced, covering the contexts in which it is experienced and how it is experienced. The researcher attempts to develop statements from the interview transcripts that describe representative ways of experiencing the phenomenon in the form of 'categories of description'. A category of description represents a qualitatively different way of experiencing a phenomenon. This article discusses the reasons for adopting phenomenography, phenomenography's epistemological assumptions, and the strengths and weaknesses of the two different data-analysis methods. Phenomenography's strength is its ability to develop logical structures that give a picture of the experience of a phenomenon while being able to read into the structure as much of the complexity of that experience as is consciously and practically possible. One method, described as the 'Åkerlind' method, emerged as the appropriate method for phenomenographic studies in nursing.
Design of a Representative Low Earth Orbit Satellite to Improve Existing Debris Models

NASA Technical Reports Server (NTRS)

Clark, S.; Dietrich, A.; Werremeyer, M.; Fitz-Coy, N.; Liou, J.-C.

2012-01-01

This paper summarizes the process and methodologies used in the design of a small-satellite, DebriSat, that represents materials and construction methods used in modern day Low Earth Orbit (LEO) satellites. This satellite will be used in a future hypervelocity impact test with the overall purpose to investigate the physical characteristics of modern LEO satellites after an on-orbit collision. The major ground-based satellite impact experiment used by DoD and NASA in their development of satellite breakup models was conducted in 1992. The target used for that experiment was a Navy Transit satellite (40 cm, 35 kg) fabricated in the 1960 s. Modern satellites are very different in materials and construction techniques from a satellite built 40 years ago. Therefore, there is a need to conduct a similar experiment using a modern target satellite to improve the fidelity of the satellite breakup models. The design of DebriSat will focus on designing and building a next-generation satellite to more accurately portray modern satellites. The design of DebriSat included a comprehensive study of historical LEO satellite designs and missions within the past 15 years for satellites ranging from 10 kg to 5000 kg. This study identified modern trends in hardware, material, and construction practices utilized in recent LEO missions, and helped direct the design of DebriSat.
Factors influencing frontal cortex development and recovery from early frontal injury.

PubMed

Halliwell, Celeste; Comeau, Wendy; Gibb, Robbin; Frost, Douglas O; Kolb, Bryan

2009-01-01

Neocortical development represents more than a simple unfolding of a genetic blueprint but rather represents a complex dance of genetic and environmental events that interact to adapt the brain to fit a particular environmental context. Although most cortical regions are sensitive to a wide range of experiential factors during development and later in life, the prefrontal cortex appears to be unusually sensitive to perinatal experiences and relatively immune to many adulthood experiences relative to other neocortical regions. One way to examine experience-dependent prefrontal development is to conduct studies in which experiential perturbations are related neuronal morphology. This review of the research reveals both pre- and post-natal factors have important effects on prefrontal development and behaviour. Such factors include psychoactive drugs, including both illicit drugs and prescription drugs, stress, gonadal hormones and sensory and motor stimulation. A second method of study is to examine both the effects of perinatal prefrontal injury on the development of the remaining cerebral mantle and correlated behaviours as well as the effects of post-injury rehabilitation programmes on the anatomical and behavioural measures. Prefrontal injury alters cerebral development in a developmental-stage dependent manner with perinatal injuries having far more deleterious effects than similar injuries later in infancy. The outcome of perinatal injuries can be modified, however, by rehabilitation with many of the factors shown to influence prefrontal development in the otherwise normal brain.
The Social Neuroscience of Interpersonal Emotions.

PubMed

Müller-Pinzler, Laura; Krach, Sören; Krämer, Ulrike M; Paulus, Frieder M

In our daily lives, we constantly engage in reciprocal interactions with other individuals and represent ourselves in the context of our surrounding social world. Within social interactions, humans often experience interpersonal emotions such as embarrassment, shame, guilt, or pride. How interpersonal emotions are processed on the neural systems level is of major interest for social neuroscience research. While the configuration of laboratory settings in general is constraining for emotion research, recent neuroimaging investigations came up with new approaches to implement socially interactive and immersive scenarios for the real-life investigation of interpersonal emotions. These studies could show that among other brain regions the so-called mentalizing network, which is typically involved when we represent and make sense of others' states of mind, is associated with interpersonal emotions. The anterior insula/anterior cingulate cortex network at the same time processes one's own bodily arousal during such interpersonal emotional experiences. Current research aimed to explore how we make sense of others' emotional states during social interactions and investigates the modulating factors of our emotional experiences during social interactions. Understanding how interpersonal emotions are processed on the neural systems level may yield significant implications for neuropsychiatric disorders that affect social behavior such as social anxiety disorders or autism.
Not looking yourself: The cost of self-selecting photographs for identity verification.

PubMed

White, David; Burton, Amy L; Kemp, Richard I

2016-05-01

Photo-identification is based on the premise that photographs are representative of facial appearance. However, previous studies show that ratings of likeness vary across different photographs of the same face, suggesting that some images capture identity better than others. Two experiments were designed to examine the relationship between likeness judgments and face matching accuracy. In Experiment 1, we compared unfamiliar face matching accuracy for self-selected and other-selected high-likeness images. Surprisingly, images selected by previously unfamiliar viewers - after very limited exposure to a target face - were more accurately matched than self-selected images chosen by the target identity themselves. Results also revealed extremely low inter-rater agreement in ratings of likeness across participants, suggesting that perceptions of image resemblance are inherently unstable. In Experiment 2, we test whether the cost of self-selection can be explained by this general disagreement in likeness judgments between individual raters. We find that averaging across rankings by multiple raters produces image selections that provide superior identification accuracy. However, benefit of other-selection persisted for single raters, suggesting that inaccurate representations of self interfere with our ability to judge which images faithfully represent our current appearance. © 2015 The British Psychological Society.
Preliminary characterization of a laser-generated plasma sheet

DOE PAGES

Keiter, P. A.; Malamud, G.; Trantham, M.; ...

2014-12-10

We present the results from recent experiments to create a flowing plasma sheet. Two groups of three laser beams with nominally 1.5 kJ of energy per group were focused to separate pointing locations, driving a shock into a wedge target. As the shock breaks out of the wedge, the plasma is focused on center, creating a sheet of plasma. Measurements at 60 ns indicate the plasma sheet has propagated 2825 microns with an average velocity of 49 microns/ns. These experiments follow previous experiments, which are aimed at studying similar physics as that found in the hot spot region of cataclysmicmore » variables. Krauland et al created a flowing plasma, which represents the flowing plasma from the secondary star. This flow interacted with a stationary object, which represented the disk around the white dwarf. A reverse shock is a shock formed when a freely expanding plasma encounters an obstacle. Reverse shocks can be generated by a blast wave propagating through a medium. As a result, they can also be found in binary star systems where the flowing gas from a companion star interacts with the accretion disk of the primary star.« less
The Episodic Nature of Experience: A Dynamical Systems Analysis.

PubMed

Sreekumar, Vishnu; Dennis, Simon; Doxas, Isidoros

2017-07-01

Context is an important construct in many domains of cognition, including learning, memory, and emotion. We used dynamical systems methods to demonstrate the episodic nature of experience by showing a natural separation between the scales over which within-context and between-context relationships operate. To do this, we represented an individual's emails extending over about 5 years in a high-dimensional semantic space and computed the dimensionalities of the subspaces occupied by these emails. Personal discourse has a two-scaled geometry with smaller within-context dimensionalities than between-context dimensionalities. Prior studies have shown that reading experience (Doxas, Dennis, & Oliver, 2010) and visual experience (Sreekumar, Dennis, Doxas, Zhuang, & Belkin, 2014) have a similar two-scaled structure. Furthermore, the recurrence plot of the emails revealed that experience is predictable and hierarchical, supporting the constructs of some influential theories of memory. The results demonstrate that experience is not scale-free and provide an important target for accounts of how experience shapes cognition. Copyright © 2016 Cognitive Science Society, Inc.
Dorsolateral pFC and the representation of the incorrect use of an object: the transcranial direct current stimulation effect on N400 for visual and linguistic stimuli.

PubMed

Balconi, Michela; Vitaloni, Silvia

2014-02-01

In this study, we explored the representation of an incongruent action (instrumentally incorrect use of an object) in comparison with sentences ending with an incongruent action word, taking into account the role of the activation of the left dorsolateral pFC (DLPFC). This activity was appositely modulated by transcranial direct current stimulation (tDCS). The effect of tDCS when participants processed congruent/incongruent object-related actions (Experiment 1) or sentences (Experiment 2) was verified by measuring changes in the ERP N400, error rates (ERs), and RTs. In Experiment 1, 30 participants performed the detection task within a dynamic context (video tapes representing a sequence of four action frames). In Experiment 2, 28 participants read sentences that represented object-related actions. The stimulation effect (a cathode applied to the DLPFC and an anode to the right supraorbital region) was analyzed by comparing the ER, RT, and ERP profiles before and after stimulation (or sham treatment). A significant reduction of the N400 was observed for incongruent stimuli in the case of cathodal (inhibitory) stimulation of the DLPFC in comparison with prestimulation conditions for Experiment 1, but not Experiment 2. Moreover, ERs were increased, and RTs were reduced in response to incongruent conditions after tDCS, but not after sham stimulation in Experiment 1. It is suggested that perturbation of the DLPFC may limit the ability to analyze a semantically anomalous action sequence as a reduced N400 ERP effect and increased random responses was observed. Finally, the contribution of the frontal area to the semantic processing of actions is discussed.
Evaluating Productivity Predictions Under Elevated CO2 Conditions: Multi-Model Benchmarking Across FACE Experiments

NASA Astrophysics Data System (ADS)

Cowdery, E.; Dietze, M.

2016-12-01

As atmospheric levels of carbon dioxide levels continue to increase, it is critical that terrestrial ecosystem models can accurately predict ecological responses to the changing environment. Current predictions of net primary productivity (NPP) in response to elevated atmospheric CO2 concentration are highly variable and contain a considerable amount of uncertainty.The Predictive Ecosystem Analyzer (PEcAn) is an informatics toolbox that wraps around an ecosystem model and can be used to help identify which factors drive uncertainty. We tested a suite of models (LPJ-GUESS, MAESPA, GDAY, CLM5, DALEC, ED2), which represent a range from low to high structural complexity, across a range of Free-Air CO2 Enrichment (FACE) experiments: the Kennedy Space Center Open Top Chamber Experiment, the Rhinelander FACE experiment, the Duke Forest FACE experiment and the Oak Ridge Experiment on CO2 Enrichment. These tests were implemented in a novel benchmarking workflow that is automated, repeatable, and generalized to incorporate different sites and ecological models. Observational data from the FACE experiments represent a first test of this flexible, extensible approach aimed at providing repeatable tests of model process representation.To identify and evaluate the assumptions causing inter-model differences we used PEcAn to perform model sensitivity and uncertainty analysis, not only to assess the components of NPP, but also to examine system processes such nutrient uptake and and water use. Combining the observed patterns of uncertainty between multiple models with results of the recent FACE-model data synthesis project (FACE-MDS) can help identify which processes need further study and additional data constraints. These findings can be used to inform future experimental design and in turn can provide informative starting point for data assimilation.
The stability of hydrogen ion and specific conductance in filtered wet-deposition samples stored at ambient temperatures

USGS Publications Warehouse

Gordon, J.D.; Schroder, L.J.; Morden-Moore, A. L.; Bowersox, V.C.

1995-01-01

Separate experiments by the U.S. Geological Survey (USGS) and the Illinois State Water Survey Central Analytical Laboratory (CAL) independently assessed the stability of hydrogen ion and specific conductance in filtered wet-deposition samples stored at ambient temperatures. The USGS experiment represented a test of sample stability under a diverse range of conditions, whereas the CAL experiment was a controlled test of sample stability. In the experiment by the USGS, a statistically significant (?? = 0.05) relation between [H+] and time was found for the composited filtered, natural, wet-deposition solution when all reported values are included in the analysis. However, if two outlying pH values most likely representing measurement error are excluded from the analysis, the change in [H+] over time was not statistically significant. In the experiment by the CAL, randomly selected samples were reanalyzed between July 1984 and February 1991. The original analysis and reanalysis pairs revealed that [H+] differences, although very small, were statistically different from zero, whereas specific-conductance differences were not. Nevertheless, the results of the CAL reanalysis project indicate there appears to be no consistent, chemically significant degradation in sample integrity with regard to [H+] and specific conductance while samples are stored at room temperature at the CAL. Based on the results of the CAL and USGS studies, short-term (45-60 day) stability of [H+] and specific conductance in natural filtered wet-deposition samples that are shipped and stored unchilled at ambient temperatures was satisfactory.
"Understanding my ALS". Experiences and reflections of persons with amyotrophic lateral sclerosis and relatives on participation in peer group rehabilitation.

PubMed

Madsen, Louise Sofia; Jeppesen, Jørgen; Handberg, Charlotte

2018-01-26

The aim of this study was to gain insight into experiences and reflections of persons with amyotrophic lateral sclerosis and relatives concerning the peer group rehabilitation programme "More Life - Less Illness". This qualitative study used the Interpretive Description methodology with Symbolic Interactionism as the analytical framework. Eighteen programme participants representing persons with amyotrophic lateral sclerosis (n = 8) and relatives (n = 10) were included. Data consisted of individual interviews and participant observation. The analysis revealed two categorical themes, "Sense of Community Building" and "Understanding my ALS", which represented the participants' experiences and reflections on peer group rehabilitation. Through the analysis, it became apparent that "Sense of Community Building" gave rise to an increased and personalised understanding of amyotrophic lateral sclerosis among the participants. As a part of the continuous processing of the knowledge gained, "Facing Facts" and "Retaining Normality" appeared as subthemes regarding the participants' ability to live a less dependent and more meaningful life. This study of peer group rehabilitation for persons with amyotrophic lateral sclerosis and relatives indicates that programme participation leads to positive experiences in terms of living a shared meaningful life despite severe disability. The findings may guide practice to develop longitudinal peer group rehabilitation programmes with joint inclusion of persons with amyotrophic lateral sclerosis and relatives. Implications for Rehabilitation Peer group rehabilitation may facilitate an increased and personalised understanding of what it means to live with amyotrophic lateral sclerosis. A programme design with six months of sequential sessions enables a continuous processing of shared experiences and gained knowledge. Joint participation of persons with amyotrophic lateral sclerosis and their relatives supports both their internal relationship and social networking. Peer group rehabilitation in amyotrophic lateral sclerosis should help overcome obstacles concerning the needs of participants, accessibility, and geographical distance.

Smart Fluids in Hydrology: Use of Non-Newtonian Fluids for Pore Structure Characterization

NASA Astrophysics Data System (ADS)

Abou Najm, M. R.; Atallah, N. M.; Selker, J. S.; Roques, C.; Stewart, R. D.; Rupp, D. E.; Saad, G.; El-Fadel, M.

2015-12-01

Classic porous media characterization relies on typical infiltration experiments with Newtonian fluids (i.e., water) to estimate hydraulic conductivity. However, such experiments are generally not able to discern important characteristics such as pore size distribution or pore structure. We show that introducing non-Newtonian fluids provides additional unique flow signatures that can be used for improved pore structure characterization while still representing the functional hydraulic behavior of real porous media. We present a new method for experimentally estimating the pore structure of porous media using a combination of Newtonian and non-Newtonian fluids. The proposed method transforms results of N infiltration experiments using water and N-1 non-Newtonian solutions into a system of equations that yields N representative radii (Ri) and their corresponding percent contribution to flow (wi). This method allows for estimating the soil retention curve using only saturated experiments. Experimental and numerical validation comparing the functional flow behavior of different soils to their modeled flow with N representative radii revealed the ability of the proposed method to represent the water retention and infiltration behavior of real soils. The experimental results showed the ability of such fluids to outsmart Newtonian fluids and infer pore size distribution and unsaturated behavior using simple saturated experiments. Specifically, we demonstrate using synthetic porous media that the use of different non-Newtonian fluids enables the definition of the radii and corresponding percent contribution to flow of multiple representative pores, thus improving the ability of pore-scale models to mimic the functional behavior of real porous media in terms of flow and porosity. The results advance the knowledge towards conceptualizing the complexity of porous media and can potentially impact applications in fields like irrigation efficiencies, vadose zone hydrology, soil-root-plant continuum, carbon sequestration into geologic formations, soil remediation, petroleum reservoir engineering, oil exploration and groundwater modeling.
EXPLORATORY STUDIES IN THE USE OF PICTURES AND SOUND FOR TEACHING FOREIGN LANGUAGE VOCABULARY.

ERIC Educational Resources Information Center

GROSSLIGHT, J.H.; KALE, S.V.

THE EFFECTS OF A NUMBER OF VARIABLES BASIC TO THE LEARNING OF FOREIGN LANGUAGE VOCABULARY WERE REPORTED. THE LANGUAGE SELECTED FOR LEARNING WAS RUSSIAN. SUBJECTS IN THE FIRST EXPERIMENT WERE 409 STUDENTS FROM AN INTRODUCTORY PSYCHOLOGY COURSE. FROM AN ENGLISH-RUSSIAN DICTIONARY, A PRELIMINARY LIST OF COMMON VERBS WAS SELECTED WHICH REPRESENTED AN…
System Simulation Modeling: A Case Study Illustration of the Model Development Life Cycle

Treesearch

Janice K. Wiedenbeck; D. Earl Kline

1994-01-01

Systems simulation modeling techniques offer a method of representing the individual elements of a manufacturing system and their interactions. By developing and experimenting with simulation models, one can obtain a better understanding of the overall physical system. Forest products industries are beginning to understand the importance of simulation modeling to help...
Problem Solving in Technology Rich Contexts: Mathematics Sense Making in Out-of-School Environments

ERIC Educational Resources Information Center

Lowrie, Tom

2005-01-01

This investigation describes the way in which a case study participant (aged 7) represented, posed and solved problems in a technology game-based environment. The out-of-school problem-solving context placed numeracy demands on the participant that were more complex and sophisticated than the type of mathematics experiences he encountered in…
Inclusive Education in Spain: How Do Skills, Resources, and Supports Affect Regular Education Teachers' Perceptions of Inclusion?

ERIC Educational Resources Information Center

Chiner, Esther; Cardona, Maria Cristina

2013-01-01

This study examined regular education teachers' perceptions of inclusion in elementary and secondary schools in Spain and how these perceptions may differ depending on teaching experience, skills, and the availability of resources and supports. Stratified random sampling procedures were used to draw a representative sample of 336 general education…
The Contributions of Living-Learning Programs on Developing Sense of Civic Engagement in Undergraduate Students

ERIC Educational Resources Information Center

Rowan-Kenyon, Heather; Soldner, Matt E.; Kurotsuchi Inkelas, Karen

2008-01-01

This study examines the influence of elements of the college experience, specifically participation in a living-learning (L/L) program, on students' self-reported sense of civic engagement. The researchers examined a nationally representative sample of students (n = 1,474) including those who participated in civic engagement themed L/L programs,…
Development of Graduates' Attributes in Chemistry within an Open Distance Learning (ODL) Environment: UNISA's Experience

ERIC Educational Resources Information Center

Tafesse, Fikru; Mphahlele, Malose J.

2018-01-01

Discipline-specific knowledge and associated technical skills as well as generic skills have represented distinct and separate aspects of chemical sciences in university studies (linear training). In addition to technical skills gained through laboratory training, employers now require a soft skill set such as strengths in analytical thinking,…
Animated and Static Concept Maps Enhance Learning from Spoken Narration

ERIC Educational Resources Information Center

Adesope, Olusola O.; Nesbit, John C.

2013-01-01

An animated concept map represents verbal information in a node-link diagram that changes over time. The goals of the experiment were to evaluate the instructional effects of presenting an animated concept map concurrently with semantically equivalent spoken narration. The study used a 2 x 2 factorial design in which an animation factor (animated…
"Putting in Your Time": Faculty Experiences in the Process of Promotion to Professor

ERIC Educational Resources Information Center

Gardner, Susan K.; Blackstone, Amy

2013-01-01

The rank of professor or "full" professor represents the highest status possible for faculty members, and it is generally gained by attaining professional expertise and a national or international reputation. Beyond this, however, little is known about these individuals or the promotion process at this level. In this qualitative study of…
Divorce Injustices: Perceptions of Formerly Wealthy Women of the Stressors, Crises, and Traumas

ERIC Educational Resources Information Center

Rettig, Kathryn D.

2007-01-01

The current study was funded by the Minnesota Agricultural Experiment Station, Project 53-054 Decision Making Integral to Relationship Transitions in Families. The perspectives presented in the paper do not represent views of the funding agency and errors remain the sole responsibility of the author. This article is a major revision of a…
How Employees with Different National Identities Experience a Geocentric Organizational Culture of a Global Corporation: A Phenomenological Study

ERIC Educational Resources Information Center

Plakhotnik, Maria S.

2010-01-01

A global corporation values both profitability and social acceptance; its units mutually negotiate governance and represent a highly interdependent network where centers of excellence and high-potential employees are identified regardless of geographic locations. These companies try to build geocentric, or "world oriented" (Marquardt, 1999, p.…
Building social capital in forest communities: Analysis of New Mexico's Collaborative Forest Restoration Program

Treesearch

Tyler Prante; Jennifer A. Thacher; Daniel W. McCollum; Robert P. Berrens

2007-01-01

In part because of its emphasis on building social capital, the Collaborative Forest Restoration Program (CFRP) in New Mexico represents a unique experiment in public lands management. This study uses logit probability modeling to investigate what factors determined CFRP funding, which totaled $26 million between 2001 and 2006. Results reveal program preferences for...
An Evaluation of Air Force Food Service Operations at Travis Air Force Base

DTIC Science & Technology

1974-06-01

food service system as represented by food service operations...was base level feeding requirements, excluding non-appropriated fund food service activities, hospital dining facilities and patient feeding, and...inflight food service . Following completion of these studies, proposed solutions to the problems were actually implemented and evaluated in a food service experiment at Travis
Prevalence of Isolated Sleep Paralysis in Black Subjects

PubMed Central

Bell, Carl C.; Shakoor, Bambade; Thompson, Belinda; Dew, Donald; Hughley, Eugene; Mays, Raymond; Shorter-Gooden, Kumea

1984-01-01

Sleep paralysis is a state of consciousness experienced while waking from sleep or falling asleep. It is characterized by an experience of being unable to move for several seconds or minutes. This study represents the first survey to measure the incidence of this disorder in a black population of healthy subjects and psychiatric patients. PMID:6737506
Who Dates? The Effects of Temperament, Puberty, and Parenting on Early Adolescent Experience with Dating: The TRAILS Study

ERIC Educational Resources Information Center

Ivanova, Katya; Veenstra, Rene; Mills, Melinda

2012-01-01

This article focuses on how temperament, pubertal maturation, and perception of parenting behaviors affect the propensity to date in early adolescence (mean age = 13.55). Hypotheses are tested with a representative sample of 2,230 Dutch adolescents, the TRacking Adolescents' Individual Lives Survey (TRAILS). The results suggest that adolescents…
The Simultaneity of Experience: Cultural Identity, Magical Realism and the Artefactual in Digital Storytelling

ERIC Educational Resources Information Center

Honeyford, Michelle A.

2013-01-01

This paper explores how students, as multimodal storytellers, can weave powerful narratives blending modes, genres, artefacts and literary conventions to represent the real and imagined in their lives. Part of a larger ethnographic case study of student writing in a middle years class for immigrant students learning English as an additional…
Knowing Who Dunnit: Infants Identify the Causal Agent in an Unseen Causal Interaction

ERIC Educational Resources Information Center

Saxe, Rebecca; Tzelnic, Tania; Carey, Susan

2007-01-01

Preverbal infants can represent the causal structure of events, including distinguishing the agentive and receptive roles and categorizing entities according to stable causal dispositions. This study investigated how infants combine these 2 kinds of causal inference. In Experiments 1 and 2, 9.5-month-olds used the position of a human hand or a…
Posttraumatic Stress and Growth in Student Service Members and Veterans: The Role of Personal Growth Initiative

ERIC Educational Resources Information Center

Borowa, Dominika; Robitschek, Christine; Harmon, Kevin Andrew; Shigemoto, Yuki

2016-01-01

Objective: This study explored the extent to which personal growth initiative (PGI) may predict posttraumatic stress and growth in student service members/veterans (SSM/V). Participants: Participants were 136 SSM/V (79% men) representing multiple branches of the armed forces. Forty-four percent of participants reported having combat experience.…
No Evidence of Substantive Nonresponse Bias for the 2011 Administration. SERU Project Technical Report

ERIC Educational Resources Information Center

Chatman, Steve

2011-01-01

This study of the 2011 administration focused on principal component scores based on the 2008 and 2009 SERU (Student Experience in the Research University) administrations. The first analysis is a traditional nonresponse examination where the response rates of various groups are compared to determine if the responding students represent the larger…
Childhood Abuse, Chronic Pain, and Depression in the National Comorbidity Survey

ERIC Educational Resources Information Center

Sachs-Ericsson, Natalie; Kendall-Tackett, Kathleen; Hernandez, Annya

2007-01-01

Objective: The current study examined the effects of childhood sexual and physical abuse on reports of pain in men and women (N=1,727). Methods: Data from the National Comorbidity Survey, a nationally representative sample, were utilized. Childhood experiences of physical and sexual abuse were assessed, and pain reports in relation to current…

Chimera states in Gaussian coupled map lattices

NASA Astrophysics Data System (ADS)

Li, Xiao-Wen; Bi, Ran; Sun, Yue-Xiang; Zhang, Shuo; Song, Qian-Qian

2018-04-01

We study chimera states in one-dimensional and two-dimensional Gaussian coupled map lattices through simulations and experiments. Similar to the case of global coupling oscillators, individual lattices can be regarded as being controlled by a common mean field. A space-dependent order parameter is derived from a self-consistency condition in order to represent the collective state.
Researching Disturbed, Disturbing Art: Using Typography to Re/Present Educational Research

ERIC Educational Resources Information Center

Loveless, Douglas J.; Bhattacharya, Kakali; Griffith, Bryant

2012-01-01

This paper argues that typography can be an affective re/presentational strategy when used as a medium within the research framework of arts-based inquiry. Grounded in a larger comparative case study exploring the experiences of two elementary teachers in south Texas, the purpose of this paper is to (1) situate typography within the field of…
International Experience, Universities Support and Graduate Employability--Perceptions of Chinese International Students Studying in UK Universities

ERIC Educational Resources Information Center

Huang, Rong; Turner, Rebecca

2018-01-01

Recent policy developments in English Higher Education have resulted in employability placed in the spotlight, whereby the success of universities will be measured based on graduate employment. This represents the latest focus placed on employability in the sector, as universities are increasingly expected to provide employment-ready graduates to…
The Hidden Professoriate. Credentialism, Professionalism, and the Tenure Crisis. Contributions in Sociology, Number 29.

ERIC Educational Resources Information Center

Wilke, Arthur S., Ed.

The paradoxical state of academe's attempt to crowd individuals into institutions of higher education at a time when jobs for them are evaporating has created a conflict within the academic personnel community for non-tenured faculty struggling to survive. Case studies representing actual experiences of some individuals directly involved in the…
Rethinking Gifted Education in South Africa: The Voices of Gifted Grade 11 Students

ERIC Educational Resources Information Center

Oswald, Marietjie; Rabie, Erika

2017-01-01

In this article, we report the findings of a qualitative, collective case study exploring the academic experiences of six grade 11 gifted students in two schools in diverse socio-economic communities in rural Western South Africa. Gifted students represent an important component of a nation's intellectual capital. They possess the qualities needed…
Developing Instructional Materials for Productive Skills. Report of a Study Group Meeting (Jakarta, Indonesia, October 2-17, 1979).

ERIC Educational Resources Information Center

United Nations Educational, Scientific, and Cultural Organization, Bangkok (Thailand). Regional Office for Education in Asia and Oceania.

In October 1979, representatives of six of the twenty member nations of the Asia Programme of Educational Innovation for Development met in Indonesia to discuss formulation of guidelines for developing instructional materials for teaching productive skills. This report on that conference begins with comments on experiences in materials development…
A National Sample of Preschoolers with Autism Spectrum Disorders: Special Education Services and Parent Satisfaction

ERIC Educational Resources Information Center

Bitterman, Amy; Daley, Tamara C.; Misra, Sunil; Carlson, Elaine; Markowitz, Joy

2008-01-01

The Pre-Elementary Education Longitudinal Study (PEELS) examines the preschool and early elementary school experiences of a nationally representative sample of 3,104 children ages 3-5 with disabilities from 2004 through 2009. This paper describes the special education and related services received by a subsample of 186 preschoolers with autism…
In the Good Old Summertime: What Do Parents Want for Their Kids?

ERIC Educational Resources Information Center

Le Menestrel, Suzanne

This study investigated parents' attitudes toward the summer vacation period and their children's summer experiences. Participants were a nationally representative sample of approximately 400 parents of children age 5-14 years who completed telephone interviews as part of two subsequent omnibus surveys. Most parents ranged in age from 35-54 years.…
Number of Sense Effects of Chinese Disyllabic Compounds in the Two Hemispheres

ERIC Educational Resources Information Center

Huang, Chih-Ying; Lee, Chia-Ying; Huang, Hsu-Wen; Chou, Chia-Ju

2011-01-01

The current study manipulated the visual field and the number of senses of the first character in Chinese disyllabic compounds to investigate how the related senses (polysemy) of the constituted character in the compounds were represented and processed in the two hemispheres. The ERP results in experiment 1 revealed crossover patterns in the left…
The Role of Aspirational Experiences and Behaviors in Cultivating Momentum for Transfer Access in STEM: Variations across Gender and Race

ERIC Educational Resources Information Center

Wang, Xueli; Lee, Seo Young; Prevost, Amy

2017-01-01

Objective: Although upward transfer in science, technology, engineering, and mathematics (STEM) fields represents a prominent national policy concern, community college students' aspirations for transfer in STEM are often impeded, resulting in lower transfer rates. This study investigated four aspects of community college STEM students'…
Imagining the Possibilities: Qualitative Inquiry at the Intersections of Race, Gender, Disability, and Class

ERIC Educational Resources Information Center

Petersen, Amy J.

2012-01-01

This paper reflects upon the methodology and methods of a qualitative study that examined the lived educational experiences of four African-American women labeled with disabilities and from low socioeconomic backgrounds. This paper offers discussion as to the usefulness of alternate methods of representing data, specifically poetry and narrative,…
Cognitive and Affection Reform in Urban Elementary Schools: Listening to the Voices of Children

ERIC Educational Resources Information Center

Friend, Jennifer; Caruthers, Loyce

2009-01-01

This heuristic narratological inquiry used video-taped interviews and observations to explore the experiences of 145 urban students in grades one through six who also represented diverse cultural and linguistic backgrounds. The goal of the study was to identify curricular and pedagogical strategies that enhance what students love about school,…
Resilience to Adult Psychopathology Following Childhood Maltreatment: Evidence from a Community Sample

ERIC Educational Resources Information Center

Collishaw, Stephan; Pickles, Andrew; Messer, Julie; Rutter, Michael; Shearer, Christina; Maughan, Barbara

2007-01-01

Objective: Child abuse is an important risk for adult psychiatric morbidity. However, not all maltreated children experience mental health problems as adults. The aims of the present study were to address the extent of resilience to adult psychopathology in a representative community sample, and to explore predictors of a good prognosis. Methods:…
Shades of Pink: Preschoolers Make Meaning in a Reggio-Inspired Classroom

ERIC Educational Resources Information Center

Kim, Bo Sun

2012-01-01

Shades of Pink study describes how six preschoolers and their teacher engaged in a collaborative learning project through which they learned about the shades of a color--in this case, pink. As the children learned through experimenting and discussing their theories, they represented ideas using art as a tool for discovery and learning. The study…
Natural Evolution and Human Consciousness

PubMed Central

Holmgren, Jan

2014-01-01

A visual conscious experience is my empirical basis. All that we know comes to us through conscious experiences. Thanks to natural evolution, we have nearly direct perception, and can largely trust the information we attain. There is full integration, with no gaps, of organisms in the continuous world. Human conscious experiences, on the other hand, are discrete. Consciousness has certain limits for its resolution. This is illustrated by the so-called light-cone, with consequences for foundations in physics. Traditional universals are replaced by feels and distributions. Conscious experiences can be ordered within a framework of conceptual spaces. Triple Aspect Monism (TAM) can represent the dynamics of conscious systems. However, to fully represent the creative power of human consciousness, an all-inclusive view is suggested: Multi Aspect Monism (MAM). PMID:24891802
Formal verification of medical monitoring software using Z language: a representative sample.

PubMed

Babamir, Seyed Morteza; Borhani, Mehdi

2012-08-01

Medical monitoring systems are useful aids assisting physicians in keeping patients under constant surveillance; however, taking sound decision by the systems is a physician concern. As a result, verification of the systems behavior in monitoring patients is a matter of significant. The patient monitoring is undertaken by software in modern medical systems; so, software verification of modern medial systems have been noticed. Such verification can be achieved by the Formal Languages having mathematical foundations. Among others, the Z language is a suitable formal language has been used to formal verification of systems. This study aims to present a constructive method to verify a representative sample of a medical system by which the system is visually specified and formally verified against patient constraints stated in Z Language. Exploiting our past experience in formal modeling Continuous Infusion Insulin Pump (CIIP), we think of the CIIP system as a representative sample of medical systems in proposing our present study. The system is responsible for monitoring diabetic's blood sugar.
'Chain pooling' model selection as developed for the statistical analysis of a rotor burst protection experiment

NASA Technical Reports Server (NTRS)

Holms, A. G.

1977-01-01

A statistical decision procedure called chain pooling had been developed for model selection in fitting the results of a two-level fixed-effects full or fractional factorial experiment not having replication. The basic strategy included the use of one nominal level of significance for a preliminary test and a second nominal level of significance for the final test. The subject has been reexamined from the point of view of using as many as three successive statistical model deletion procedures in fitting the results of a single experiment. The investigation consisted of random number studies intended to simulate the results of a proposed aircraft turbine-engine rotor-burst-protection experiment. As a conservative approach, population model coefficients were chosen to represent a saturated 2 to the 4th power experiment with a distribution of parameter values unfavorable to the decision procedures. Three model selection strategies were developed.
Women’s Experiences of Group Prenatal Care

PubMed Central

Novick, Gina; Sadler, Lois S.; Kennedy, Holly Powell; Cohen, Sally S.; Groce, Nora E.; Knafl, Kathleen A.

2011-01-01

Group prenatal care (GPNC) is an innovative alternative to individual prenatal care. In this longitudinal study we used ethnographic methods to explore African American and Hispanic women’s experiences of receiving GPNC in two urban clinics. Methods included individual, in-depth, semistructured interviews of women and group leaders in GPNC, participant observation of GPNC sessions, and medical record review. GPNC offered positive experiences and met many of the women’s expressed preferences regarding prenatal care. Six themes were identified, which represented separate aspects of women’s experiences: investment, collaborative venture, a social gathering, relationships with boundaries, learning in the group, and changing self. Taken together, the themes conveyed the overall experience of GPNC. Women were especially enthusiastic about learning in groups, about their relationships with group leaders, and about having their pregnancy-related changes and fears normalized. There were also important boundaries on relationships between participants, and some women wished for greater privacy during physical examinations. PMID:20693516
The International Microgravity Laboratory, a Spacelab for materials and life sciences

NASA Technical Reports Server (NTRS)

Snyder, Robert S.

1992-01-01

The material science experiments performed on the International Microgravity Laboratory (IML-1), which is used to perform investigations which require the low gravity environment of space, are discussed. These experiments, the principal investigator, and associated organization are listed. Whether the experiment was a new development or was carried on an earlier space mission, such as the third Spacelab (SL-3) or the Shuttle Middeck, is also noted. The two major disciplines of materials science represented on IML-1 were the growth of crystals from the melt, solution, or vapor and the study of fluids (liquids and gases) in a reduced gravity environment. The various facilities on board IML-1 and their related experiments are described. The facilities include the Fluids Experiment System (FES) Vapor Crystal Growth System (VCGS) Organic Crystal Growth Facility (OCGF), Cryostat (CRY), and the Critical Point Facility (CPF).
Object permanence and working memory in cats (Felis catus).

PubMed

Goulet, S; Doré, F Y; Rousseau, R

1994-10-01

Cats (Felis catus) find an object when it is visibly moved behind a succession of screens. However, when the object is moved behind a container and is invisibly transferred from the container to the back of a screen, cats try to find the object at or near the container rather than at the true hiding place. Four experiments were conducted to study search behavior and working memory in visible and invisible displacement tests of object permanence. Experiment 1 compared performance in single and in double visible displacement trials. Experiment 2 analyzed search behavior in invisible displacement tests and in analogs using a transparent container. Experiments 3 and 4 tested predictions made from Experiment 1 and 2 in a new situation of object permanence. Results showed that only the position changes that cats have directly perceived are encoded and activated in working memory, because they are unable to represent or infer invisible movements.

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Sample records for experiment representativity studies

Abstract