Wind Turbine Gearbox Oil Filtration and Condition Monitoring

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

Sheng, Shuangwen

This is an invited presentation for a pre-conference workshop, titled advances and opportunities in lubrication: wind turbine, at the 2015 Society of Tribologists and Lubrication Engineers (STLE) Tribology Frontiers Conference held in Denver, CO. It gives a brief overview of wind turbine gearbox oil filtration and condition monitoring by highlighting typical industry practices and challenges. The presentation starts with an introduction by covering recent growth of global wind industry, reliability challenges, benefits of oil filtration and condition monitoring, and financial incentives to conduct wind operation and maintenance research, which includes gearbox oil filtration and condition monitoring work presented herein. Then,more » the presentation moves on to oil filtration by stressing the benefits of filtration, discussing typical main- and offline-loop practices, highlighting important factors considered when specifying a filtration system, and illustrating real-world application challenges through a cold-start example. In the next section on oil condition monitoring, a discussion on oil sample analysis, oil debris monitoring, oil cleanliness measurements and filter analysis is given based on testing results mostly obtained by and at NREL, and by pointing out a few challenges with oil sample analysis. The presentation concludes with a brief touch on future research and development (R and D) opportunities. It is hoping that the information presented can inform the STLE community to start or redirect their R and D work to help the wind industry advance.« less

Start time variability and predictability in railroad train and engine freight and passenger service employees.

DOT National Transportation Integrated Search

2014-04-01

Start time variability in work schedules is often hypothesized to be a cause of railroad employee fatigue because unpredictable work start times prevent employees from planning sleep and personal activities. This report examines work start time diffe...

Status of development of the power plants on the base of MCFC in TFNC-VNIIEF

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

Novitski, E.Z.; Savkin, G.G.

1996-04-01

VNIIF started work on Molten Carbonate Fuel cells and power plants in 1991. Some results of VNIIF work in the direction of Autonomous Power Engineering are presented. Topics include molten carbonate fuel cell components, separator plates, manufacturing and testing, design, and goals.

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

Clifton, Andrew

IEA Wind Task 32 seeks to identify and mitigate the barriers to the adoption of lidar for wind energy applications. In Phase 1 of the task, a working group looked at the state of the art of wind lidar in complex flow conditions. This presentation is a short summary of that work, given at the start of Phase 2.

Predictors of work disability after start of anti-TNF therapy in a national cohort of Swedish patients with rheumatoid arthritis: does early anti-TNF therapy bring patients back to work?

PubMed

Olofsson, T; Petersson, I F; Eriksson, J K; Englund, M; Nilsson, J A; Geborek, P; Jacobsson, L T H; Askling, J; Neovius, M

2017-07-01

To examine predictors of work ability gain and loss after anti-tumour necrosis factor (TNF) start, respectively, in working-age patients with rheumatoid arthritis (RA) with a special focus on disease duration. Patients with RA, aged 19-62 years, starting their first TNF inhibitor 2006-2009 with full work ability (0 sick leave/disability pension days during 3 months before bio-start; n=1048) or no work ability (90 days; n=753) were identified in the Swedish biologics register (Anti-Rheumatic Treatment In Sweden, ARTIS) and sick leave/disability pension days retrieved from the Social Insurance Agency. Outcome was defined as work ability gain ≥50% for patients without work ability at bio-start and work ability loss ≥50% for patients with full work ability, and survival analyses conducted. Baseline predictors including disease duration, age, sex, education level, employment, Health Assessment Questionnaire, Disease Activity Score 28 and relevant comorbidities were estimated using Cox regression. During 3 years after anti-TNF start, the probability of regaining work ability for totally work-disabled patients was 35% for those with disease duration <5 years and 14% for disease duration ≥5 years (adjusted HR 2.1 (95% CI 1.4 to 3.2)). For patients with full work ability at bio-start, disease duration did not predict work ability loss. Baseline disability pension was also a strong predictor of work ability gain after treatment start. A substantial proportion of work-disabled patients with RA who start anti-TNF therapy regain work ability. Those initiating treatment within 5 years of symptom onset have a more than doubled 3-year probability of regaining work ability compared with later treatment starts. This effect seems largely due to the impact of disease duration on disability pension status. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

20 CFR 218.26 - Work started after annuity beginning date.

Code of Federal Regulations, 2010 CFR

2010-04-01

... rights to return to work for a railroad employee before starting any new work. (2) Age annuity. An... employee, spouse or divorced spouse gives up all rights to return to work for a railroad employer before... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Work started after annuity beginning date...

Walking- and cycling track networks in Norwegian cities : cost-benefit analyses including health effects and external costs of road traffic : summary

DOT National Transportation Integrated Search

2002-04-01

Cost- benefit analyses of walking- and cycling track net-works in three Norwegian cities are presented in this study. A project group working with a National Cycling Strategy in Norway initialised the study. Motivation for starting the study is the P...

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

Lei, Hongzhuan; Lu, Zhiming; Vesselinov, Velimir Valentinov

These are slides from a presentation on identifying heterogeneities in subsurface environment using the level set method. The slides start with the motivation, then explain Level Set Method (LSM), the algorithms, some examples are given, and finally future work is explained.

Optimizing Energy Conversion: Magnetic Nano-materials

NASA Astrophysics Data System (ADS)

McIntyre, Dylan; Dann, Martin; Ilie, Carolina C.

2015-03-01

We present herein the work started at SUNY Oswego as a part of a SUNY 4E grant. The SUNY 4E Network of Excellence has awarded SUNY Oswego and collaborators a grant to carry out extensive studies on magnetic nanoparticles. The focus of the study is to develop cost effective rare-earth-free magnetic materials that will enhance energy transmission performance of various electrical devices (solar cells, electric cars, hard drives, etc.). The SUNY Oswego team has started the preliminary work for the project and graduate students from the rest of the SUNY 4E team (UB, Alfred College, Albany) will continue the project. The preliminary work concentrates on analyzing the properties of magnetic nanoparticle candidates, calculating molecular orbitals and band gap, and the fabrication of thin films. SUNY 4E Network of Excellence Grant.

Neural networks modeling and control of dynamical systems

NASA Technical Reports Server (NTRS)

Soloway, Don

1992-01-01

The topics are presented in viewgraph form and include: an overview of research; first year research objectives (starting 5/91); background; current work; accomplishments from 5/91-9/91; and second year research objectives.

Working towards Reform in Mathematics Education: Parents', Teachers', and Students' Views of "Different." Working Paper No. 31

ERIC Educational Resources Information Center

Civil, Marta

2006-01-01

This essay is a reflection on several aspects related to my encounters with the concept of reform in mathematics education. I start with an exploration of the question of what is reform, grounded on my work with teachers in a project aimed at promoting reform. I focus on two aspects that seem to be present in most approaches to reform--group…

Virtual Reconstruction of Lost Architectures: from the Tls Survey to AR Visualization

NASA Astrophysics Data System (ADS)

Quattrini, R.; Pierdicca, R.; Frontoni, E.; Barcaglioni, R.

2016-06-01

The exploitation of high quality 3D models for dissemination of archaeological heritage is currently an investigated topic, although Mobile Augmented Reality platforms for historical architecture are not available, allowing to develop low-cost pipelines for effective contents. The paper presents a virtual anastylosis, starting from historical sources and from 3D model based on TLS survey. Several efforts and outputs in augmented or immersive environments, exploiting this reconstruction, are discussed. The work demonstrates the feasibility of a 3D reconstruction approach for complex architectural shapes starting from point clouds and its AR/VR exploitation, allowing the superimposition with archaeological evidences. Major contributions consist in the presentation and the discussion of a pipeline starting from the virtual model, to its simplification showing several outcomes, comparing also the supported data qualities and advantages/disadvantages due to MAR and VR limitations.

Engineering the Future: The Social Necessity of Communicative Engineers

ERIC Educational Resources Information Center

Ravesteijn, Wim; De Graaff, Erik; Kroesen, Otto

2006-01-01

It is a long and winding road from invention to innovation. Starting from this observation, this paper presents a historical perspective on the capabilities engineers should possess to do their work. The importance of the "communicative competence" involved in creating a social base for innovation is underpinned. We will present a…

Playing the game: Psychology textbooks speak out about love.

PubMed

Vicedo, Marga

2012-03-01

Starting in 1958, Harry Harlow published numerous research papers analyzing the emotional and social development of rhesus monkeys. This essay examines the presentation of Harlow's work in introductory psychology textbooks from 1958 to 1975, focusing on whether the textbooks erased the process of research, presented results without hedging, and provided a uniform account of Harlow's work and results. It argues that many textbooks were not passive vehicles of knowledge transmission; instead, they played a role similar to articles of meta-analysis and literature reviews.

Breadth of Scientific Activities and Network Station Specifications in the IGS

NASA Technical Reports Server (NTRS)

Moore, A. W.; Springer, T. A.; Reigber, Ch.

1999-01-01

This presentation provides a brief overview of the scientific activities of the International GPS Service (IGS). This was an approved activity of the International Association of Geodesy (IAG) with official start of service on 1 Jan 1994. The mission of the IGS is "To provide a service to support geodetic and geophysical research activities, through GPS data and data products." The presentation explains the concept of the IGS working group, and pilot projects, and reviews the current working groups and pilot projects.

The Personal Responsibility and Work Opportunity Act of 1996: What Welfare Reform Means for Head Start.

ERIC Educational Resources Information Center

Shuell, Julie; Hanna, Jeff; Oterlei, Jannell; Kariger, Patricia

This National Head Start Association booklet outlines the main provisions of the Personal Responsibility and Work Opportunity Act and describes how it may affect local Head Start Programs. The document is intended to serve as a starting point for local programs, parents, administrators and policy workers to discuss and plan how Head Start will…

Getting Started: A Call for Storytelling in Family Medicine Education.

PubMed

Ventres, William; Gross, Paul

2016-10-01

In this article we introduce family medicine educators to storytelling as an important teaching tool. We describe how stories are a critical part of the work of family physicians. We review the rationales for family medicine educators to become skilled storytellers. We present the components of effective stories, proposing two different perspectives on how to imagine, construct, and present them. We provide a list of resources for getting started in storytelling and offer two personal vignettes that articulate the importance of storytelling in the authors' respective professional developments. We point the way forward for family medicine educators interested in integrating storytelling into their repertoire of teaching skills.

The Establishment of School Social Work in Austria--From a Project to a Regular Offer

ERIC Educational Resources Information Center

Heimgartner, Arno; Sting, Stephan

2013-01-01

The contribution introduces the present situation and the basic challenges of school social work in Austria. Starting with the perception of a developing "knowledge society" (Höhne, 2004), school is seen as a life place at which social subjects and problems occur and are made manifest. The analyses are based in particular on empirical…

Enhanced thermaly managed packaging for III-nitride light emitters

NASA Astrophysics Data System (ADS)

Kudsieh, Nicolas

In this Dissertation our work on `enhanced thermally managed packaging of high power semiconductor light sources for solid state lighting (SSL)' is presented. The motivation of this research and development is to design thermally high stable cost-efficient packaging of single and multi-chip arrays of III-nitrides wide bandgap semiconductor light sources through mathematical modeling and simulations. Major issues linked with this technology are device overheating which causes serious degradation in their illumination intensity and decrease in the lifetime. In the introduction the basics of III-nitrides WBG semiconductor light emitters are presented along with necessary thermal management of high power cingulated and multi-chip LEDs and laser diodes. This work starts at chip level followed by its extension to fully packaged lighting modules and devices. Different III-nitride structures of multi-quantum well InGaN/GaN and AlGaN/GaN based LEDs and LDs were analyzed using advanced modeling and simulation for different packaging designs and high thermal conductivity materials. Study started with basic surface mounted devices using conventional packaging strategies and was concluded with the latest thermal management of chip-on-plate (COP) method. Newly discovered high thermal conductivity materials have also been incorporated for this work. Our study also presents the new approach of 2D heat spreaders using such materials for SSL and micro LED array packaging. Most of the work has been presented in international conferences proceedings and peer review journals. Some of the latest work has also been submitted to well reputed international journals which are currently been reviewed for publication. .

Computerized estimation of compatibility of stressors at work and worker's health characteristics.

PubMed

Susnik, J; Bizjak, B; Cestnik, B

1996-09-01

A system of computerized estimation of compatibility of stressors at work and worker's health characteristics is presented. Each characteristic is defined and scored on a specific scale. Incompatible workplace characteristics as related to worker's characteristics are singled out and offered to the user for an ergonomic solution. Work on the system started in 1987. This paper deals with the system's further development, which involves a larger number of topics, changes of the algorithm and presentation of an applicative case. Comparison of the system's results with those of medical experts shows that the use of the system tends to improve the thoroughness and consistency of incompatibility evaluations and consequently to make working ability assessment more objective.

A novel transient wall heat transfer approach for the start-up of SI engines with gasoline direct injection

NASA Astrophysics Data System (ADS)

Lejsek, David; Kulzer, André; Hammer, Jürgen

2010-11-01

The introduction of CO2-reduction technologies like Start-Stop or the Hybrid-Powertrain and the worldwide stringent emission legislation require a detailed optimization of the engine start-up. The combustion concept development as well as the calibration of the engine control unit makes an explicit thermodynamic analysis of the combustion process during the start-up necessary. Initially, the well-known thermodynamic analysis of in-cylinder pressure at stationary condition was transmitted to the highly non-stationary engine start-up. For this running mode of the engine the current models for calculation of the transient wall heat fluxes were found to be misleading. With a fraction of nearly 45% of the burned fuel energy, the wall heat is very important for the calculation of energy balance and for the combustion process analysis. Based on the measurements of transient wall heat transfer densities during the start-up presented in a former work (Lejsek and Kulzer in Investigations on the transient wall heat transfer at start-up for SI engines with gasoline direct injection. SAE Paper), the paper describes the development of adaptations to the known correlations by Woschni (MTZ 31:491, 1970), Hohenberg (Experimentelle Erfassung der Wandwärme von Kolbenmotoren. TU Graz, Habil., 1980) and Bargende (Ein Gleichungsansatz zur Berechnung der instationären Wandwärmeverluste im Hochdruckteil von Ottomotoren. TH Darmstadt, PhD-Thesis, 1991) for the application during engine start-up. To demonstrate the high accuracy of the model, the results of the cyclic resolved thermodynamic analysis using the presented novel approaches were compared with the results of the measurements. It is shown, that the novel heat flux models for the engine start-up process gives a cyclic resolved thermodynamic analysis to optimize the engine start-up pretty efficient.

Leadership toward Creativity in Virtual Work in a Start-Up Context

ERIC Educational Resources Information Center

Humala, Iris Annukka

2015-01-01

Purpose: This paper aims to better understand how to lead toward creativity in virtual work in a start-up context. Design/methodology/approach: The study investigates the participants' experiences about the learning challenges in leadership toward creativity in virtual work in a start-up company and the meanings attributed to their experiences,…

Philosophy of Education as an Exercise in Thought: To Not Forget Oneself when "Things Take Their Course"

ERIC Educational Resources Information Center

Masschelein, Jan

2011-01-01

Starting from a distinction between a critical and an ascetic tradition in philosophy and taking into account their different stances towards the present, the article proposes a practice of philosophy of education within the ascetic tradition. In this tradition, the work of philosophy is in the first place a work on the self--that is,…

The categorisation of swimming start performance with reference to force generation on the main block and footrest components of the Omega OSB11 start blocks.

PubMed

Slawson, Sian E; Conway, Paul P; Cossor, Jodi; Chakravorti, Nandini; West, Andrew A

2013-01-01

Work presented in this paper provides a methodology for categorising swimming start performance based on peak force production on the main block and footrest components of the Omega OSB11 starting block. A total of 46 elite British swimmers were tested, producing over 1000 start trials. Overwater cameras were synchronised to a specifically designed start block that allowed the measurement of force production via two sets of four, tri-axis, force transducers; one set in the main block and one in the footrest. Data were then analysed, segregating trials for gender. Each start was categorised, with respect to the peak force production in horizontal and vertical components, into one of nine categories. Three performance indicators, i.e. block time, take-off velocity and distance of entry, were used to assess whether differences in performance could be correlated with these categories. Results from these data suggest that swimmers generating higher than average peak forces were more likely to produce a better overall start performance than those who produced forces lower than the average, for this population of athletes.

Declining sleep quality among nurses: a population-based four-year longitudinal study on the transition from nursing education to working life.

PubMed

Hasson, Dan; Gustavsson, Petter

2010-12-08

Several studies have established impaired sleep is a common problem among nurses. Overworked, fatigued and stressed nurses are at a higher risk of making mistakes that threaten patient safety as well as their own health. The aim of the present study was to longitudinally monitor the development of sleep quality in nurses, starting from the last semester at the university, with three subsequent annual follow-ups once the nurses had entered working life. Nationwide, longitudinal questionnaire study of nursing students and newly qualified nurses in Sweden. The results imply a continuous decline in sleep quality among nurses during the three years of follow-up, starting from their last semester of nursing education and continuing for three years into their working life. The most pronounced short-term decline in sleep quality seems to occur in the transition between student life and working life. This finding is important since it may affect the quality of care and the health of nurses negatively.

Ostwald ripening theory

NASA Technical Reports Server (NTRS)

Baird, J. K.

1986-01-01

The Ostwald-ripening theory is deduced and discussed starting from the fundamental principles such as Ising model concept, Mayer cluster expansion, Langer condensation point theory, Ginzburg-Landau free energy, Stillinger cutoff-pair potential, LSW-theory and MLSW-theory. Mathematical intricacies are reduced to an understanding version. Comparison of selected works, from 1949 to 1984, on solution of diffusion equation with and without sink/sources term(s) is presented. Kahlweit's 1980 work and Marqusee-Ross' 1954 work are more emphasized. Odijk and Lekkerkerker's 1985 work on rodlike macromolecules is introduced in order to simulate interested investigators.

Is NIPARS Working as Advertised? An Analysis of NIPARS Program Customer Service

DTIC Science & Technology

1992-09-01

AD-A259 733IN I II I ll IMiiiI Gil III 11 AFIT/GLM/LSM/92S- 17 IS NIPARS WORKING AS ADVERTISED ? AN ANALYSIS OFNIPARS PROGRAM CUSTOMER SERVICE THESIS...and/or Dist Speoiai. AFIT/GLM/LSM/92S-17 IS NIPARS WORKING AS ADVERTISED ? AN ANALYSIS OF NIPARS PROGRAM CUSTOMER SERVICE THESIS Presented to the...measures. x1i IS NIPARS WORKING AS ADVERTISED ? AN ANALYSIS OF NIPARS PROGRAM CUSTOMER SERVICE L Introduction 1.1 Overview Foreign policy must start with

Head Start: Helping Families Move from Welfare to Work.

ERIC Educational Resources Information Center

Finlay, Belva; Blank, Helen; Poersch, Nicole Oxendine

This report describes some of the ways in which Head Start agencies are helping to set parents on the path to self-sufficiency. The report is intended to illustrate the variety of initiatives that are underway and to highlight the important work all Head Start agencies are doing to support parents as they move from welfare to work. The…

IAU Astronomy for Equity and Inclusion Working Group

NASA Astrophysics Data System (ADS)

Ortiz-Gil, A.; García, B.; WG3 of Commission C1 Division C of the IAU

2017-03-01

In this talk we present the aims, goals and activities that have been started by the working group on Astronomy for Equity and Inclusion. This working group is part of Commission 1 ''Astronomy Education and Development'' of Division C ''Education, Outreach and Heritage'' of the International Astronomical Union (IAU). The working group was born with the aim of developing new strategies and resources to promote the access to Astronomy, both at the profesional and outreach levels, for persons with special needs or for those who could be excluded because of race or sexual orientation (among other reasons). It is composed of astronomers affiliated with the IAU and other volunteers who work in astronomy, education and special needs, as well as partner organizations like the IAU Office of Astronomy for Development (OAD), Astronomers without Borders (AWB), the Galileo Teacher Training Program (GTTP) or Universe Awareness (UNAWE). To reach those goals we have started different initiatives which are outlined at the working group’s website, like a repository of resources or the creation of a document about good practices, and the establishment of a tight collaboration with the Working Group about Accessibility of the American Astronomical Society, which was formed recently too.

Coffee intake and development of pain during computer work.

PubMed

Strøm, Vegard; Røe, Cecilie; Knardahl, Stein

2012-09-03

The present study sought to determine if subjects who had consumed coffee before performing a simulated computer office-work task found to provoke pain in the neck and shoulders and forearms and wrists exhibited different time course in the pain development than the subjects who had abstained from coffee intake. Forty eight subjects all working fulltime, 22 with chronic shoulder and neck pain and 26 healthy pain-free subjects, were recruited to perform a computer-based office-work task for 90 min. Nineteen (40%) of the subjects had consumed coffee (1/2 -1 cup) on average 1 h 18 min before start. Pain intensity in the shoulders and neck and forearms and wrists was rated on a visual analogue scale every 15 min throughout the work task.During the work task the coffee consumers exhibited significantly lower pain increase than those who abstained from coffee. Subjects who had consumed coffee before starting a pain provoking office work task exhibited attenuated pain development compared with the subjects who had abstained from coffee intake. These results might have potentially interesting implications of a pain-modulating effect of caffeine in an everyday setting. However, studies with a double blind placebo controlled randomized design are needed.

Early entrance to the job market and its effect on adult health: evidence from Brazil.

PubMed

Kassouf, A L; McKee, M; Mossialos, E

2001-03-01

To determine the effect of employment in childhood on self-reported health in adulthood. A cross-sectional household survey, with households selected through two-stage sampling, in urban and rural areas in the northeast and southeast of Brazil. A total of 4940 individuals, aged between 18 and 65 years, were included. The main outcome measure was self-reported health. There has been a marked reduction in the proportion of people starting work during childhood although, even in the youngest age group, nearly 20% of males began work when under 10. Early entrance into the labour market is strongly associated with low levels of both education and income, with income differentials remaining at later ages. Age starting work is also linked to current household income, with approximately 35% of those starting work when 15 or over currently in the top quartile of household income, compared with 12% of those starting work when under 10. Males, those living in rural areas, and non-whites are most likely to start work early. In univariate analyses, the younger a person started working, the greater the probability of reporting less than good health status as an adult. This persists through all ages, although the difference attenuates with increasing age. In multivariate analyses, adjustment for education or household income substantially reduces the effect but fails to eliminate it in several age bands up to the age of 48, indicating that age starting work has an independent effect on self-reported health in adulthood. The debate about the appropriate policy response to child labour is complex, requiring a balance between protecting the health of the child and safeguarding the income of the family. These findings indicate the need for more research on the long-term sequelae of beginning work at an early age.

Annual Progress Report Fiscal Year 1982.

DTIC Science & Technology

1982-09-30

255 Work Jnit No. 82/43 (FY82,O) A\\dolescent Immunity to Varicella and Cytomegalovirus .............. 256 Work Unit No. 82/45 (FY82,O) V!1-26 In...with technetium-99m bone agent(Infarct avid) radiopharmaceuticals. Presented at the New Mexico Society of Internal Medicine, Albuquerque NM, 11-12 Dec...No: 82/43 Status: Ongoing Title: Adolescent Immunity to Varicella and Cytomegalovirus Start Date: Est Comp Date: Principal Investigator: Facility: LTC

Anxiety about starting three-shift work among female workers: findings from the Female Shift Workers' Health Study.

PubMed

Kubo, Tatsuhiko; Maruyama, Takashi; Shirane, Kiyoyumi; Otomo, Hajime; Matsumoto, Tetsuro; Oyama, Ichiro

2008-03-01

In 1999, the Japanese Law on Equal Employment Opportunity and Conditions was amended and the previous prohibition of the assignment of female workers to night work was abolished. Subsequently, the number of female shift workers has been increasing in Japan, necessitating greater attention to the health care of this population. The aim of the current study is to evaluate the relationship between anxiety expressed about starting three-shift work and background characteristics among female workers who were being assigned to three-shift work for the first time. The subjects were 38 middle-aged female workers (age range: 44 to 59 years) who were working at a chemical plant. The women completed a self-administered questionnaire before starting three-shift work. Levels of anxiety about starting three-shift work were assessed by the question 'Do you feel anxious about starting three-shift work?' The available responses were: 'Very agree', 'Considerably agree', 'Rather agree', 'Slightly agree' and 'Not agree at all', and 63% of the subjects gave one of the first two answers, which were defined as indicating anxiety. We also acquired information regarding lifestyle and occupation for each subject, including the following factors: frequency of breakfast consumption, subjective sleep insufficiency, previous experience of similar work before beginning shift work, previous experience of two-shift work, and responsibility for household duties. In the study, we found a marginally statistically significant trend association between frequent breakfast consumption and anxiety about starting three-shift work (P(trend) = 0.09). Anxiety was also high among subjects with sleep disorders, especially those suffering from subjective sleep insufficiency (P = 0.08). Due to the small study population, these results should be interpreted with caution and confirmed by future studies.

Start-up of thermophilic-dry anaerobic digestion of OFMSW using adapted modified SEBAC inoculum.

PubMed

Fdéz-Güelfo, L A; Alvarez-Gallego, C; Sales Márquez, D; Romero García, L I

2010-12-01

The work presented here concerns the start-up and stabilization stages of a Continuous Stirred Tank Reactor (CSTR) semicontinuously fed for the treatment of the Organic Fraction of Municipal Solid Waste (OFMSW) through anaerobic digestion at thermophilic temperature range (55 degrees C) and dry conditions (30% Total Solids). The procedure reported involves two novel aspects with respect to other start-up and stabilization protocols reported in the literature. The novel aspects concern the adaptation of the inoculum to both the operating conditions (thermophilic and dry) and to the type of waste by employing a modified SEBAC (Sequential Batch Anaerobic Composting) system and, secondly, the direct start-up of the process in a thermophilic temperature regime and feeding of the system from the first day of operation. In this way a significant reduction in the start-up time and stabilization is achieved i.e. 110 days in comparison to 250 days for the processes reported by other authors for the same type of waste and digester. The system presents suitable operational conditions to stabilize the reactor at SRT of 35 days, with a maximum biogas production of 1.944 LR/L.d with a CH(4) and CO(2) percentage of 25.27% and 68.15%, respectively. 2010 Elsevier Ltd. All rights reserved.

Tracing Changes in Families Who Participated in the Home-Start Parenting Program: Parental Sense of Competence as Mechanism of Change

PubMed Central

Asscher, Jessica J.; Hermanns, Jo; Reitz, Ellen; Prinzie, Peter; van den Akker, Alithe L.

2010-01-01

The present study aimed to (1) determine the long-term effectiveness of Home-Start, a preventive parenting program, and (2) test the hypothesis that changes in maternal sense of competence mediate the program’s effects. Participants were 124 mothers (n = 66 intervention, n = 58 comparison). Four assessments took place during a 1-year period. Latent growth modeling showed that Home-Start enhanced growth in maternal sense of competence and supportive parenting, and led to a decrease in the use of inept discipline. Results of mediational and cross-lagged analyses were consistent with the hypothesized model: Participation in Home-Start was related to the changes in maternal sense of competence, which in turn predicted changes in parenting. The results affirm the importance of directly targeting parental sense of competence in the context of prevention work with parents. PMID:20101464

On the question of starting conditions for frontal axisymmetric inlets tested in hot-shot wind tunnels

NASA Astrophysics Data System (ADS)

Gounko, Yu. P.; Mazhul, I. I.

2017-05-01

The work presents the results of an analysis of starting conditions for some frontal axisymmetric inlets of internal compression tested at freestream Mach numbers M = 3-8.4 in the hot-shot wind tunnels based at Khristianovich Institute of Theoretical and Applied Mechanics (ITAM). The results of these inlets test are compared with the data of numerical computations of inviscid, laminar, and turbulent flows carried out by the pseudo-unsteady method. There were determined the inlet throat areas limiting either with regard to the inlet starting or with regard to providing the maximally possible degree of geometric compression of the inlet-captured supersonic airstream at its deceleration in the already started inlet. Reshaping of computed flow patterns in the inlets depending on the variation of the minimal cross section of the inlet internal duct is analyzed.

Design of a Ku band miniature multiple beam klystron

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

Bandyopadhyay, Ayan Kumar, E-mail: ayan.bandyopadhyay@gmail.com; Pal, Debasish; Kant, Deepender

2016-03-09

The design of a miniature multiple beam klystron (MBK) working in the Ku-band frequency range is presented in this article. Starting from the main design parameters, design of the electron gun, the input and output couplers and radio frequency section (RF-section) are presented. The design methodology using state of the art commercial electromagnetic design tools, analytical formulae as well as noncommercial design tools are briefly presented in this article.

Proof Mapping

ERIC Educational Resources Information Center

Linares, Leanne A.; Smith, Phil R.

2009-01-01

A geometry textbook or mathematics journal that prints all the work that mathematicians use as they generate proofs of mathematical results would be rare indeed. The false starts, the tentative conjectures, and the arguments that led nowhere--these are conveniently omitted; only the final successful product is presented to the world. To students…

AN ORGANIZATION GUIDE TO POLLUTION PREVENTION

EPA Science Inventory

This Pollution Prevention (P2) Guide provides information to help organizations get P2 programs started on t re-evaluate existing P2 programs. It presents an alternative method for working on P2 projects and four approaches to implementing a P2 program in an organization. The int...

A Neo-Kohlbergian Approach to Morality Research.

ERIC Educational Resources Information Center

Rest, James R.; Narvaez, Darcia; Thoma, Stephen J.; Bebeau, Muriel J.

2000-01-01

Proposes a model of moral judgment that builds on Lawrence Kohlberg's core assumptions. Addresses the concerns that have surfaced related to Kohlberg's work in moral judgment. Presents an overview of this model using Kohlberg's basic starting points, ideas from cognitive science, and developments in moral philosophy. (CMK)

Does disease activity at start of biologic therapy influence work-loss in RA patients?

PubMed

Olofsson, Tor; Johansson, Kari; Eriksson, Jonas K; van Vollenhoven, Ronald; Miller, Heather; Petersson, Ingemar F; Askling, Johan; Neovius, Martin

2016-04-01

To compare work-loss in RA patients starting their first biologic with high vs moderate disease activity. We identified all RA patients aged 20-63 years in the Swedish Biologics Register who started their first biologic 2007-09 with high disease activity (DAS28 >5.1; n = 868) or moderate disease activity (DAS28 3.2-5.1; n = 854). Work days lost, defined as sick leave and disability pension days from the Swedish Social Insurance Agency, were assessed over 5 years after first bio-start. We estimated between-group mean differences adjusted for age, sex, calendar year, education level, disease duration, comorbidities and work-loss the month before bio-start. During 5 years after anti-TNF start, mean monthly work days lost declined from 16.0 to 9.2 (42%; P < 0.001) in patients with high disease activity at baseline and from 12.0 to 7.2 (40%; P < 0.001) in patients with moderate disease activity, with no between-group difference (adjusted mean difference 0.81; 95% CI - 0.44, 2.05). Accumulated 5-year work-loss was, however, higher in the high activity group (724 vs 548 days; adjusted mean difference 70; 95% CI 20, 120), but after stratification on baseline disability pension status, no differences in accumulated work-loss were detected. Substantial work-loss was seen in both patients with high and patients with moderate disease activity at anti-TNF start, with a 5-year decline in mean monthly work days lost by ∼40% in both groups and no between-group difference. Accumulated work-loss over 5 years was higher in the high-activity group, which may be explained by differences in baseline disability pension status. © The Author 2015. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Datum Transformation of Spatial Data and Application in Cadastre

NASA Astrophysics Data System (ADS)

Kısa, A.; Erkek, B.; Ekin, L.

2012-07-01

In Turkey, cadastral works have been started with local-based works in 1924 and speeded up after 1950's by using photogrammetry. Different measurement methods, coordinate systems and scales have been used in these works. As a result of primary cadastral activities two main products are generated; cadastral maps and title deeds. After this, cadastral data live on the maps, by cadastral activities carried out by cadastral offices and title deed data live on the registrations by land registration activities carried out by land registration offices. Up to 2005 different references systems such as local (graphic) and ED50 have been used for Cadastral maps production. 2000's Land Registry and Cadastre Information System (TAKBİS) Project has started as a pilot application by Land Registry and Cadastre (TKGM). After completion of pilot project spreading activities started in 2005 and still has been ongoing. On the other hand The government has taken the decision to finish primary cadastral activities within three years. The primary cadastral activities completed at the end of 2008. And also TKGM has completed metadata portal in 2008. At last, cadastral map updating (renovation) started in 2009 by using digital orthophoto with 30 cm GSD. Today people have great expectations in accomplishing digital cadastral services, they need correct, reliable, easy and quick accessible land register and cadastral survey information. Even such request expressed in INPIRE directive by using ISO 191XX data standards. This means we have great hard work for spatial data conversion, datum and data transformation for map and cadastral data harmonization. This paper presents results of investigation of used cadastral maps and used datums of the TKGM and possible transformation methods of datum and some recommendations for future applications.

Disability Awareness and Action Working Group (DAAWG) Event with

NASA Image and Video Library

2017-10-12

Kennedy Space Center Director Bob Cabana addresses employees at the start of the annual National Disability Employment Awareness Month (NDEAM) event, which featured Dr. Temple Grandin as keynote speaker. A prominent author and speaker on animal behavior and autism, she is a professor of animal science at Colorado State University in Fort Collins, Colorado. Kennedy's Disability Awareness and Action Working Group partnered with the Kennedy Networking Opportunities for Women group to sponsor the presentation.

N.G. Basov and early works on semiconductor lasers at P.N. Lebedev Physics Institute

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

Eliseev, P G

2012-12-31

A survey is presented of works on creation and investigation of semiconductor lasers during 1957 - 1977 at the P.N. Lebedev Physics Institute. Many of these works were initiated by N.G. Basov, starting from pre-laser time, when N.G. Basov and his coworkers formulated principal conditions of creation of lasers on interband transitions in semiconductors. Main directions of further works were diode lasers based on various materials and structures, their characteristics of output power, high-speed operation and reliability. (special issue devoted to the 90th anniversary of n.g. basov)

Antisynthetase syndrome (ASS) presenting as acute respiratory distress syndrome (ARDS) in a patient without myositis features.

PubMed

Kanchustambham, Venkat Kiran; Saladi, Swetha; Mahmoudassaf, Sarah; Patolia, Setu

2016-12-09

A woman aged 61 years presented to the emergency room with a 1-week history of dyspnoea on exertion and dry cough. X-ray of the chest showed diffuse interstitial opacities and was started on antibiotics and furosemide, and despite these measures, patient's respiratory status worsened, prompting endotracheal intubation. CT of the chest showed diffuse bilateral ground glass opacities and underwent bronchoscope with trans-bronchial biopsy that showed chronic bronchitis. Pt was empirically started on intravenous steroids due to concerns for interstitial lung disease (ILD). Autoimmune work up was sent and underwent video-assisted thoracoscopic surgery-guided biopsy of the lung that showed non-specific interstitial pattern with fibrosis. The patient was diagnosed as having antisynthetase syndrome with pulmonary involvement (ILD) as the cause of her acute respiratory failure. Azathioprine was started as steroid-sparing agent and was weaned off the ventilator to a tracheostomy collar and discharged to long-term rehabilitation centre. 2016 BMJ Publishing Group Ltd.

Adult Education: Profiles in Diversity and Strength.

ERIC Educational Resources Information Center

Weinstein-Shr, Gail

Even Start is a family literacy and support program for families with young children. This paper identifies several characteristics of adult learners in order to suggest effective approaches for working with adults to improve literacy skills. The first section presents five case studies illustrating adults with different histories, circumstances,…

A Model for Teaching Information Design

ERIC Educational Resources Information Center

Pettersson, Rune

2011-01-01

The author presents his views on the teaching of information design. The starting point includes some general aspects of teaching and learning. The multidisciplinary structure and content of information design as well as the combined practical and theoretical components influence studies of the discipline. Experiences from working with a model for…

Great Work, Genuine Problems

ERIC Educational Resources Information Center

Berry, John N., III

2007-01-01

This article presents findings from the "Library Journal's" Job Satisfaction Survey among 3,095 library staffers from public, academic, special, and school libraries. A whopping 85.6 percent of the respondents said they would choose a career in librarianship again if they had to start over. Workers in all types of libraries--and across…

Performance Analysis of the HTTP Protocol on Geostationary Satellite Links

NASA Technical Reports Server (NTRS)

Krus, Hans; Allman, Mark; Griner, Jim; Tran, Diepchi

1998-01-01

Various issues associated with HTTP protocol on geostationary satellite links are presented in viewgraph form. Specific topics include: 1) Network reference points; 2) The HTTP 1.0 and 1.1 mechanisms; 3) Experimental setup; 4) TCP and HTTP configuration; 5) Modelling slow start and 6) Results and future work.

The MOUSE Squad

ERIC Educational Resources Information Center

Borja, Rhea R.

2004-01-01

This article presents a New York city after-school program started by MOUSE (Making Opportunities for Upgrading Schools and Education), a national nonprofit group that teaches students how to fix computers, and equips them with the communication and problem-solving skills to help them in the working world. The MOUSE program is part of a trend…

National Drug Control Strategy, 2006

ERIC Educational Resources Information Center

The White House, 2006

2006-01-01

This report presents a summary of the Fiscal Year 2007 Budget for the National Drug Control Strategy within the three key priority areas; education and community action, treatment and intervention, and disruption in the illegal drug market. The first chapter, "Stopping Drug Use Before It Starts," outlines the Administration's work to prevent the…

Examining Increased Flexibility in Assessment Formats

ERIC Educational Resources Information Center

Irwin, Brian; Hepplestone, Stuart

2012-01-01

There have been calls in the literature for changes to assessment practices in higher education, to increase flexibility and give learners more control over the assessment process. This article explores the possibilities of allowing student choice in the format used to present their work, as a starting point for changing assessment, based on…

Syntactic Categorization in French-Learning Infants

ERIC Educational Resources Information Center

Shi, Rushen; Melancon, Andreane

2010-01-01

Recent work showed that infants recognize and store function words starting from the age of 6-8 months. Using a visual fixation procedure, the present study tested whether French-learning 14-month-olds have the knowledge of syntactic categories of determiners and pronouns, respectively, and whether they can use these function words for…

The Place and Future of Social Work in Palliative Care Services in Turkey: State of the Art.

PubMed

Isıkhan, Vedat

2017-04-03

Palliative care, which is a special type of care including alleviation of physical and psychosocial symptoms of individuals with life-limiting serious diseases, has long been neglected in Turkey. This has also affected the activity of social work and social workers in the presentation of health services. In the present study, the present status of social work in palliative care services in Turkey was analyzed. It has also been attempted to explain the historical place of social work in palliative care services from 2002 on under the guidance of the World Health Organization and Ministry of Health. In the present study, an analysis is carried out of stages social work profession went through in social care services, its strong and weak aspects, and its future perspectives. It is thought that the experience gained and accumulation of knowledge in this process as it has occurred in Turkey may serve as guidance for other countries that have only recently started to implement palliative care services, which are evaluated in the context of human rights at present.

Salivary markers of work stress in an emergency team of urban police (1 degree step).

PubMed

Zefferino, R; Facciorusso, A; Lasalvia, M; Narciso, M; Nuzzaco, A; Lucchini, R; L'Abbate, N

2006-01-01

Stress is usually defined as the experience of negative events or the perceptions of distress and negative affect that are associated with the inability to cope with them. The parameter most suitable for large-scale field studies is the determination of endocrine activity by measurement of salivary cortisol. The aim of the present study is to identify the presence of sources of stress in an emergency team of urban police and to objective such stress using the PSS (Professional Stress Scale) test and bioumoral markers as salivary cortisol and interleukin 1 /f (IL-IB). We studied 30 policemen who belonged to an emergency team. Salivary samples were collected at the start and at the end of the work-shift. As control we used the same subjects during the holiday. T test was performed to evaluate the differences between the means, the Chi Square's Test was performed to determine the statistically significant association between PSS subscales and salivary cortisol and ILl-B concentrations. Thirty policeman were evaluated, their mean age was 44,5 years, their mean work experience was 17,1 years. The PSS test indicated high scores in three subscales, they were work load, organizational structure and processes and lack of resources. SALIVARY CORTISOL: The mean concentration at the start of work-shift was higher than at the end of shift-work (p<0,05). T test indicated a statistically significant difference between mean cortisol concentrations at the same hour during the work (start and end) and during the holiday (P<0,05). A statistically significant negative association was noted between the PERC1 and PSS subscale called "work load" (p<0,05). SALIVARY IL-1B: the mean concentration of ILl-B at the start of the work-shift resulted higher than at the end, such reduction was statistically significant (P<0.05). We verified a positive association between the subclass of PSS Test called "conflict with other professionals" and salivary IL-1B concentration at the start of shift-work (p<0,05). DISCUSSION. Several precedent studies agree with our results. Our study has suggested a work related stress in urban police employed in an emergency team. We might conclude that salivary IL-1B and cortisol are useful markers of stress. We think that our findings, surely preliminary, have be corroborated by the study of vegetative parameters (heart rate, heart rate variability) that is still current. It might be useful to evaluate again the cortisol and IL-1B variations after some structure organizational modifications and after training that will teach the workers coping strategies. We might conclude that the stress discovered in this study is not hazardous for the health, if the workers have adequate holidays.

Influence of light-induced conical intersection on the photodissociation dynamics of D2(+) starting from individual vibrational levels.

PubMed

Halász, Gábor J; Csehi, András; Vibók, Ágnes; Cederbaum, Lorenz S

2014-12-26

Previous works have shown that dressing of diatomic molecules by standing or by running laser waves gives rise to the appearance of so-called light-induced conical intersections (LICIs). Because of the strong nonadiabatic couplings, the existence of such LICIs may significantly change the dynamical properties of a molecular system. In our former paper (J. Phys. Chem. A 2013, 117, 8528), the photodissociation dynamics of the D(2)(+) molecule were studied in the LICI framework starting the initial vibrational nuclear wave packet from the superposition of all the vibrational states initially produced by ionizing D(2). The present work complements our previous investigation by letting the initial nuclear wave packets start from different individual vibrational levels of D(2)(+), in particular, above the energy of the LICI. The kinetic energy release spectra, the total dissociation probabilities, and the angular distributions of the photofragments are calculated and discussed. An interesting phenomenon has been found in the spectra of the photofragments. Applying the light-induced adiabatic picture supported by LICI, explanations are given for the unexpected structure of the spectra.

Model for the techno-economic analysis of common work of wind power and CCGT power plant to offer constant level of power in the electricity market

NASA Astrophysics Data System (ADS)

Tomsic, Z.; Rajsl, I.; Filipovic, M.

2017-11-01

Wind power varies over time, mainly under the influence of meteorological fluctuations. The variations occur on all time scales. Understanding these variations and their predictability is of key importance for the integration and optimal utilization of wind in the power system. There are two major attributes of variable generation that notably impact the participation on power exchanges: Variability (the output of variable generation changes and resulting in fluctuations in the plant output on all time scales) and Uncertainty (the magnitude and timing of variable generation output is less predictable, wind power output has low levels of predictability). Because of these variability and uncertainty wind plants cannot participate to electricity market, especially to power exchanges. For this purpose, the paper presents techno-economic analysis of work of wind plants together with combined cycle gas turbine (CCGT) plant as support for offering continues power to electricity market. A model of wind farms and CCGT plant was developed in program PLEXOS based on real hourly input data and all characteristics of CCGT with especial analysis of techno-economic characteristics of different types of starts and stops of the plant. The Model analyzes the followings: costs of different start-stop characteristics (hot, warm, cold start-ups and shutdowns) and part load performance of CCGT. Besides the costs, the technical restrictions were considered such as start-up time depending on outage duration, minimum operation time, and minimum load or peaking capability. For calculation purposes, the following parameters are necessary to know in order to be able to economically evaluate changes in the start-up process: ramp up and down rate, time of start time reduction, fuel mass flow during start, electricity production during start, variable cost of start-up process, cost and charges for life time consumption for each start and start type, remuneration during start up time regarding expected or unexpected starts, the cost and revenues for balancing energy (important when participating in electricity market), and the cost or revenues for CO2-certificates. Main motivation for this analysis is to investigate possibilities to participate on power exchanges by offering continues guarantied power from wind plants by backing-up them with CCGT power plant.

What is the Meaning of the Physical Magnitude `Work'?

NASA Astrophysics Data System (ADS)

Kanderakis, Nikos

2014-06-01

Usually, in physics textbooks, the physical magnitude `work' is introduced as the product of a force multiplied by its displacement, in relation to the transfer of energy. In other words, `work' is presented as an internal affair of physics theory, while its relation to the world of experience, that is its empirical meaning, is missing. On the other hand, in the history of its creation, `work' was a concept that had empirical meaning from the start. It was constructed by engineers to measure the work (labor) of motor engines, men, and animals. Very soon however this initial meaning seems to vanish. In this article, it will be looked at how `work' is presented in physics textbooks, what was its initial meaning in the history of its formulation, under what circumstances this initial meaning faded, and how elements from the history of its creation can be used in the classroom to teach it.

A Conceptual Framework for Adaptive Project Management in the Department of Defense

DTIC Science & Technology

2016-04-30

schedule work) established a core set of principles that went unchallenged until the start of the 21st century. This belief that managing...detailed planning, task decomposition and assignment of hours at the start of a project as unnecessary, often wasted effort that sacrifices accuracy...with the illusion of precision. Work, at the task level, is best assigned by the team performing the work as close as possible to the actual start

Map of Nasca Geoglyphs

NASA Astrophysics Data System (ADS)

Hanzalová, K.; Pavelka, K.

2013-07-01

The Czech Technical University in Prague in the cooperation with the University of Applied Sciences in Dresden (Germany) work on the Nasca Project. The cooperation started in 2004 and much work has been done since then. All work is connected with Nasca lines in southern Peru. The Nasca project started in 1995 and its main target is documentation and conservation of the Nasca lines. Most of the project results are presented as WebGIS application via Internet. In the face of the impending destruction of the soil drawings, it is possible to preserve this world cultural heritage for the posterity at least in a digital form. Creating of Nasca lines map is very useful. The map is in a digital form and it is also available as a paper map. The map contains planimetric component of the map, map lettering and altimetry. Thematic folder in this map is a vector layer of the geoglyphs in Nasca/Peru. Basis for planimetry are georeferenced satellite images, altimetry is created from digital elevation model. This map was created in ArcGis software.

Review on space weather in Latin America. 1. The beginning from space science research

NASA Astrophysics Data System (ADS)

Denardini, Clezio Marcos; Dasso, Sergio; Gonzalez-Esparza, J. Americo

2016-11-01

The present work is the first of a three-part review on space weather in Latin America. It comprises the evolution of several Latin American institutions investing in space science since the 1960s, focusing on the solar-terrestrial interactions, which today is commonly called space weather. Despite recognizing advances in space research in all of Latin America, this review is restricted to the development observed in three countries in particular (Argentina, Brazil and Mexico), due to the fact that these countries have recently developed operational centers for monitoring space weather. The review starts with a brief summary of the first groups to start working with space science in Latin America. This first part of the review closes with the current status and the research interests of these groups, which are described in relation to the most significant works and challenges of the next decade in order to aid in the solving of space weather open issues.

Responding to Individual Needs in Head Start: A Head Start Series on Needs Assessment. Part 1: Working with the Individual Child.

ERIC Educational Resources Information Center

Child Development Services Bureau (DHEW/OCD), Washington, DC. Project Head Start.

This manual, designed for Head Start staff, parents, and others working with handicapped and/or nonhandicapped children, gives general background information on physical, emotional, and cognitive disabilities and offers practical suggestions for handling classroom problems related to these disabilities. Staff planning is discussed in relation to…

Increased urinary excretion of thioether in new rubber workers

PubMed Central

Kilpikari, I; Savolainen, H

1982-01-01

ABSTRACT Urinary excretion of thioether before starting work and in the early work period in a rubber factory was measured in urine samples collected after one, two to four, and five or more months of starting work. The study population consisted of 84 new workers. The urinary excretion of thioether decreased after one month's exposure and increased thereafter up to five months. Measurement of urinary thioethers in groups of new workers is therefore informative of exposure to alkylating agents only after several months from starting work. This effect may be mediated by the induction of the pertinent metabolic pathway. PMID:7138800

Status of the Boeing Dish Engine Critical Component Project

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

Brau, H.W.; Diver, R.B.; Nelving, H.

1999-01-08

The Boeing Company's Dish Engine Critical Component (DECC) project started in April of 1998. It is a continuation of a solar energy program started by McDonnell Douglas (now Boeing) and United Stirling of Sweden in the mid 1980s. The overall objectives, schedule, and status of this project are presented in this paper. The hardware test configuration, hardware background, operation, and test plans are also discussed. A summary is given of the test data, which includes the daily power performance, generated energy, working-gas usage, mirror reflectivity, solar insolation, on-sun track time, generating time, and system availability. The system performance based uponmore » the present test data is compared to test data from the 1984/88 McDonnell Douglas/United Stirling AB/Southem California Edison test program. The test data shows that the present power, energy, and mirror performance is comparable to when the hardware was first manufactured 14 years ago.« less

Status of the Boeing Dish Engine Critical Component project

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

Stone, K.W.; Nelving, H.; Braun, H.W.

1999-07-01

The Boeing Company's Dish Engine Critical Component (DECC) project started in April of 1998. It is a continuation of a solar energy program started by McDonnel Douglas (now Boeing) and United Stirling of Sweden in the mid 1980s. The overall objectives, schedule, and status of this project are presented in this paper. The hardware test configuration, hardware background, operation, and test plans are also discussed. A summary is given of the test data, which includes the daily power performance, generated energy, working-gas usage, mirror reflectivity, solar insolation, on-sun track time. Generating time, and system availability. The system performance based uponmore » the present test data is compared to test data from the 1984/88 McDonnel Douglas/United Stirling AB/Southern California Edison test program. The test data shows that the present power, energy, and mirror performance is comparable to when the hardware was first manufactured 14 years ago.« less

Starting Life Over--Working with the Head Injured: The Case of Randall.

ERIC Educational Resources Information Center

Bostwick, Tracy

1993-01-01

Presents case of engineering college student who, after automobile accident, three months in coma, and four years of rehabilitation therapy, is seeking career counseling due to his frustrations with obtaining full-time professional employment. Notes that client had difficulty remembering new information; was physically slow; was mentally slower…

Guidelines for a Gender-Balanced Curriculum in English, Grades 7-12.

ERIC Educational Resources Information Center

National Council of Teachers of English, Urbana, IL. Women in Literature and Life Assembly.

This booklet presents a book list, activities, and teacher resources to provide teachers a starting place for works of adolescent literature that will initiate conversations and questions about gender roles and the perceptions of appropriate behavior and activities. It is designed to bring teachers' attention to more recent titles in order to…

Developing Educational Alternatives: Some New Ways for Education in Rural Areas.

ERIC Educational Resources Information Center

Wood, A. W.

The evolution and diversification of alternative educational programmes for rural communities are traced from the "shock-absorber" approach, aimed at a sector of society which presented a visible need, toward community education and some of the working principles behind it. The starting point for examining educational evolution is traditional…

Common Grounds for Modelling Mathematics in Educational Software

ERIC Educational Resources Information Center

Neuper, Walther

2010-01-01

Two kinds of software, CAS and DGS, are starting to work towards mutual integration. This paper envisages common grounds for such integration based on principles of computer theorem proving (CTP). Presently, the CTP community seems to lack awareness as to which of their products' features might serve mathematics education from high-school to…

Some Critical Differences between Self-Help and Therapy Groups.

ERIC Educational Resources Information Center

Riordan, Richard J.; Beggs, Marilyn S.

1988-01-01

Presents a scheme for addressing differences between self-help groups and therapy groups, characterizing a list of group work parameters according to emphasis placed on each in therapy groups in contrast with self-help groups. Distinguishes between support groups, started by professional helping organizations or individuals, and self-help groups,…

Staff Caricatures

ERIC Educational Resources Information Center

Templeton, Kristine

2010-01-01

This article describes how the author brings staff and students together through an art project that deals with caricatures. The author started with a lesson on caricature, and she made a PowerPoint presentation showcasing the work of Al Hirschfeld. Using photos of the staff, students created portraits and hung them in a main hallway after school.…

Behavioral Talk-Write as a Method for Teaching Technical Editing.

ERIC Educational Resources Information Center

Gilbertsen, Michael; Killingsworth, M. Jimmie

1987-01-01

Presents a process-oriented method for teachers of stylistic editing workshops that allows them to (1) focus on individual students, (2) start with students basic repertory of responses and build from there, (3) work with freely emitted behavior, (4) ensure frequent and brief responses, and (5) achieve desired behavior through sequential steps.…

Early Education and Inclusion in Poland

ERIC Educational Resources Information Center

Krason, Katarzyna; Jaszczyszyn, Elzbieta

2006-01-01

The purpose of this article is to present a Polish point of view of integration work with children needing assistance. Since the 70th year of the twentieth century, the Polish kindergarten was starting to realize a new educational and care duty. The changing of duty was a consequence of psychological and pedagogical research study which encircled…

Assessing Grammar: The Languages of LARSP. Communication Disorders across Languages

ERIC Educational Resources Information Center

Ball, Martin; Crystal, David; Fletcher, Paul

2012-01-01

This collection is a resource book for those working with language disordered clients in a range of languages. It collects together versions of the well-known Language Assessment Remediation Screening Procedure (LARSP) prepared for different languages. Starting with the original version for English, the book then presents versions in more than a…

Teacher Evaluation in Practice: Understanding Evaluator Reliability and Teacher Engagement in Chicago Public Schools

ERIC Educational Resources Information Center

Sporte, Susan E.; Jiang, Jennie Y.; Luppescu, Stuart

2014-01-01

Starting in 2012-13, researchers have worked in partnership with Chicago Public Schools (CPS) and the Chicago Teachers Union (CTU) to study implementation of Chicago's new teacher evaluation system: Recognizing Educators Advancing Chicago's Students (REACH). This paper presents findings as well as experiences from the collaboration with CPS and…

Cascades in model steels: The effect of cementite (Fe3C) and Cr23C6 particles on short-term crystal damage

NASA Astrophysics Data System (ADS)

Henriksson, K. O. E.

2015-06-01

Ferritic stainless steel can be modeled as an iron matrix containing precipitates of cementite (Fe3C) and Cr23C6. When used in nuclear power production the steels in the vicinity of the core start to accumulate damage due to neutrons. The role of the afore-mentioned carbides in this process is not well understood. In order to clarify the situation bulk cascades created by primary recoils in model steels have been carried out in the present work. Investigated configurations consisted of bulk ferrite containing spherical particles (diameter of 4 nm) of either (1) Fe3C or (2) Cr23C6. Primary recoils were initiated at different distances from the inclusions, with recoil energies varying between 100 eV and 1 keV. Results for the number of point defects such as vacancies and antisites are presented. These findings indicate that defects are also remaining when cascades are started outside the carbide inclusions. The work uses a recently developed Abell-Brenner-Tersoff potential for the Fe-Cr-C system.

Children's Schooling and Parents' Investment in Children: Evidence from the Head Start Impact Study. NBER Working Paper No. 17704

ERIC Educational Resources Information Center

Gelber, Alexander M.; Isen, Adam

2011-01-01

Parents may have important effects on their children, but little work in economics explores whether children's schooling opportunities crowd out or encourage parents' investment in children. We analyze data from the Head Start Impact Study, which granted randomly-chosen preschool-aged children the opportunity to attend Head Start. We find that…

Engaging Parents in Early Head Start Home-Based Programs: How Do Home Visitors Do This?

PubMed

Shanti, Caroline

2017-01-01

Parental engagement is considered elemental to successful outcomes for parents and their children in early childhood home visiting programs. Engagement is that piece of parental involvement that refers to the working relationship between the parent and the home visitor. Multiple papers have called for research to pinpoint the ways in which home visitors work with parents to form these working relationships, and form partnerships to achieve positive outcomes. Analysis revealed that in individualizing their efforts to each family, home visitors follow semi-sequential steps in implementing engagement. This article presents a model of the process home visitors describe that resulted from analysis. Grounded theory techniques were used to analyze 29 interviews with Early Head Start (EHS) home visitors and 11 supervisors across four EHS programs in one region of the United States. The process of engagement as described emerges in three phases: (1) learning the parent's culture and style; (2) deepening the working partnership; and (3) balancing the ongoing work. Analysis further revealed specific strategies and goals that guide the work of home visitors in each of these three phases. This not only adds rich detail to the literature, but also provides a useful guide for programs and policy makers through identifying the areas where training and support will increase home visitor ability to engage parents.

A starting point of an integrated optics concept for a space-based interferometer

NASA Astrophysics Data System (ADS)

Labadie, Lucas; Kern, Pierre; Schanen, Isabelle

2017-11-01

This article deals with instrumentation challenges of the stellar interferometry mission IRSI-Darwin of the European Space Agency. The necessity to have a reliable and performant system for beam recombination has enlightened the advantages of an integrated optics solution, which is already in use for ground-base interferomety in the near infrared. However, since Darwin will operate in the mid infrared, this requires extending the integrated optics concept in this spectral range. This paper presents the guiding lines of the characterization work that should validate a new integrated optics concept for the mid infrared. We present also one example of characterization experiment we are working on.

Astronomy in Fortress of Oradea

NASA Astrophysics Data System (ADS)

Pazmany, Nicoleta; Rusu, Mircea V.

2008-09-01

The relatively recent ``re-discovery'' of some seemingly forgotten documents speaks about the existence of an early astronomical observatory as well as an elevated scientific and cultural environment in the early city of Oradea (Varadinum-first mentioned in 1113). This is the starting point of this communication paper and in this work we are presenting findings and some possible position of the so called ``ZERO MERIDIAN'' from Oradea. While working on these documents, we came to better understand the cultural and scientific development of this town throughout its history.

Software quality for 1997 - what works and what doesn`t?

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

Jones, C.

1997-11-01

This presentation provides a view of software quality for 1997 - what works and what doesn`t. For many years, software quality assurance lagged behind hardware quality assurance in terms of methods, metrics, and successful results. New approaches such as Quality Function Development (WFD) the ISO 9000-9004 standards, the SEI maturity levels, and Total Quality Management (TQM) are starting to attract wide attention, and in some cases to bring software quality levels up to a parity with manufacturing quality levels.

Paper to Electronic Questionnaires: Effects on Structured Questionnaire Forms

NASA Technical Reports Server (NTRS)

Trujillo, Anna C.

2009-01-01

With the use of computers, paper questionnaires are being replaced by electronic questionnaires. The formats of traditional paper questionnaires have been found to effect a subject's rating. Consequently, the transition from paper to electronic format can subtly change results. The research presented begins to determine how electronic questionnaire formats change subjective ratings. For formats where subjects used a flow chart to arrive at their rating, starting at the worst and middle ratings of the flow charts were the most accurate but subjects took slightly more time to arrive at their answers. Except for the electronic paper format, starting at the worst rating was the most preferred. The paper and electronic paper versions had the worst accuracy. Therefore, for flowchart type of questionnaires, flowcharts should start at the worst rating and work their way up to better ratings.

Unified theory of effective interaction

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

Takayanagi, Kazuo, E-mail: k-takaya@sophia.ac.jp

2016-09-15

We present a unified description of effective interaction theories in both algebraic and graphic representations. In our previous work, we have presented the Rayleigh–Schrödinger and Bloch perturbation theories in a unified fashion by introducing the main frame expansion of the effective interaction. In this work, we start also from the main frame expansion, and present various nonperturbative theories in a coherent manner, which include generalizations of the Brandow, Brillouin–Wigner, and Bloch–Horowitz theories on the formal side, and the extended Krenciglowa–Kuo and the extended Lee–Suzuki methods on the practical side. We thus establish a coherent and comprehensive description of both perturbativemore » and nonperturbative theories on the basis of the main frame expansion.« less

University Start-ups: A Better Business Model

NASA Astrophysics Data System (ADS)

Dehn, J.; Webley, P. W.

2015-12-01

Many universities look to start-up companies as a way to attract faculty, supporting research and students as traditional federal sources become harder to come by. University affiliated start-up companies can apply for a broader suite of grants, as well as market their services to a broad customer base. Often university administrators see this as a potential panacea, but national statistics show this is not the case. Rarely do universities profit significantly from their start-ups. With a success rates of around 20%, most start-ups end up costing the university money as well as faculty-time. For the faculty, assuming they want to continue in academia, a start-up is often unattractive because it commonly leads out of academia. Running a successful business as well as maintaining a strong teaching and research load is almost impossible to do at the same time. Most business models and business professionals work outside of academia, and the models taught in business schools do not merge well in a university environment. To mitigate this a new business model is proposed where university start-ups are aligned with the academic and research missions of the university. A university start-up must work within the university, directly support research and students, and the work done maintaining the business be recognized as part of the faculty member's university obligations. This requires a complex conflict of interest management plan and for the companies to be non-profit in order to not jeopardize the university's status. This approach may not work well for all universities, but would be ideal for many to conserve resources and ensure a harmonious relationship with their start-ups and faculty.

Mainstreaming Preschoolers: Children with Orthopedic Handicaps. A Guide for Teachers, Parents, and Others Who Work with Orthopedically Handicapped Preschoolers.

ERIC Educational Resources Information Center

Kieran, Shari Stokes; And Others

This guide to mainstreaming preschoolers with orthopedic handicaps is one of a series of eight manuals on mainstreaming preschoolers developed by Project Head Start. The guide is addressed to parents, teachers, and other professionals and paraprofessionals. Chapter I presents information on the meaning, benefits and implementation of…

Helenistic Encomium: A Reflection on Comics and Rhetoric

ERIC Educational Resources Information Center

Helms, Jason

2009-01-01

This video reflection starts in a presentation on comics at the Thomas R. Watson Conference last October, which prompted the author to explore the etymology of cosmos and comos through an alternate reading of Gorgias' "Encomium of Helen". The author then works with comos, as revelry, to offer thoughts on comics as a form of multimodal composition…

Kids Count Report in Nebraska, 2002.

ERIC Educational Resources Information Center

Johnston, Janet M.

This Kids Count report examines statewide trend data on the well-being of Nebraska's children. Section 1 of the report presents U.S. Census data on population trends in Nebraska as well as child poverty rates, and urges Nebraskans to work together to ensure that its youngest citizens have the best start possible. Section 2, the bulk of this…

Pre-Service Teachers' Knowledge for Teaching Algebra for Equity in the Middle Grades: A Preliminary Report

ERIC Educational Resources Information Center

Brown, Irving A.; Davis, Trina J.; Kulm, Gerald

2011-01-01

This article presents our plans and initial work to explore how mathematics teacher education programs can prepare teachers for diverse middle grades classrooms. It describes the start-up of a five-year National Science Foundation project to design, develop, and test technology-enriched teacher preparation strategies to address equity in algebra…

Contextual and Conceptual Intersubjectivity and Opportunities for Emergent Science Knowledge about Sound

ERIC Educational Resources Information Center

Larsson, Jonna

2013-01-01

The purpose of the present article was to gain knowledge about what aspects of, and in what way, contextual and conceptual intersubjectivity contribute to emergent science knowledge about sound. Starting from a Vygotskian theoretical base, the article rests on the work of Fleer (early learning and development. Cultural-historical concepts in play,…

Successful Dissertations and Theses: A Guide to Graduate Student Research from Proposal to Completion.

ERIC Educational Resources Information Center

Madsen, David

A guide to writing dissertations and theses is presented that is primarily directed to doctoral and master's degree candidates but that may also be useful to the writer of scholarly papers, essays, and papers. Attention is directed to the following concerns: starting and completing the dissertation; working with the research adviser and advisory…

Biology Labs That Work: The Best of How-To-Do-Its.

ERIC Educational Resources Information Center

Moore, Randy, Ed.

This book is a compilation of articles from the The American Biology Teacher journal that present biology labs that are safe, simple, dependable, economic, and diverse. Each activity can be used alone or as a starting point for helping students design follow-up experiments for in-depth study on a particular topic. Students must make keen…

Start-up of an anaerobic fluidized bed reactor treating synthetic carbohydrate rich wastewater.

PubMed

Yeshanew, Martha M; Frunzo, Luigi; Luongo, Vincenzo; Pirozzi, Francesco; Lens, Piet N L; Esposito, Giovanni

2016-12-15

The present work studied the start-up process of a mesophilic (37 ± 2 °C) anaerobic fluidized bed reactor (AFBR) operated at a hydraulic retention time (HRT) of 20 days using synthetic carbohydrate rich wastewater. Anox Kaldness-K1 carriers were used as biofilm carrier material. The reactor performance and biofilm formation were evaluated during the process. The start-up process at lower liquid recirculation flow rate enhanced the biofilm formation and reactor performance. The organic substrate composition had a major impact on early colonization of methanogenic archaea onto the surface of the Kaldness carriers during the start-up process. Specific organic substrates favouring the growth of methanogenic archaea, such as acetate, are preferred in order to facilitate the subsequent biofilm formation and AFBR start-up. The supply of 'bio-available' nutrients and trace elements, in particular iron, had an important role on optimal methanogenic activity and speeding-up of the biofilm development on the Kaldness carriers. This paper provides possible strategies to optimize the various operational parameters that influence the initial biofilm formation and development in an AFBR and similar high rate anaerobic reactors, hence can be used to reduce the long time required for process start-up. Copyright © 2016 Elsevier Ltd. All rights reserved.

Starting Labor-Management Quality of Work Life Programs.

ERIC Educational Resources Information Center

Brower, Michael

This report summarizes the experiences of the Massachusetts Quality of Working Life Center in assisting the attempted and actual start-up of a number of quality of work life (QWL) programs in 1976 and 1977 and in providing ongoing assistance. Lessons learned by the three sites the center launched, other sites, as well as those sites that chose not…

Excess protons in water-acetone mixtures. II. A conductivity study.

PubMed

Semino, Rocío; Longinotti, M Paula

2013-10-28

In the present work we complement a previous simulation study [R. Semino and D. Laria, J. Chem. Phys. 136, 194503 (2012)] on the disruption of the proton transfer mechanism in water by the addition of an aprotic solvent, such as acetone. We provide experimental measurements of the mobility of protons in aqueous-acetone mixtures in a wide composition range, for water molar fractions, xw, between 0.05 and 1.00. Furthermore, new molecular dynamics simulation results are presented for rich acetone mixtures, which provide further insight into the proton transport mechanism in water-non-protic solvent mixtures. The proton mobility was analyzed between xw 0.05 and 1.00 and compared to molecular dynamics simulation data. Results show two qualitative changes in the proton transport composition dependence at xw ∼ 0.25 and 0.8. At xw < 0.25 the ratio of the infinite dilution molar conductivities of HCl and LiCl, Λ(0)(HCl).Λ(0)(LiCl)(-1), is approximately constant and equal to one, since the proton diffusion is vehicular and equal to that of Li(+). At xw ∼ 0.25, proton mobility starts to differ from that of Li(+) indicating that above this concentration the Grotthuss transport mechanism starts to be possible. Molecular dynamics simulation results showed that at this threshold concentration the probability of interconversion between two Eigen structures starts to be non-negligible. At xw ∼ 0.8, the infinite molar conductivity of HCl concentration dependence qualitatively changes. This result is in excellent agreement with the analysis presented in the previous simulation work and it has been ascribed to the interchange of water and acetone molecules in the second solvation shell of the hydronium ion.

Measuring patient tolerance for future adverse events in low-risk emergency department chest pain patients.

PubMed

Chen, Jennifer C; Cooper, Richelle J; Lopez-O'Sullivan, Ana; Schriger, David L

2014-08-01

We assess emergency department (ED) patients' risk thresholds for preferring admission versus discharge when presenting with chest pain and determine how the method of information presentation affects patients' choices. In this cross-sectional survey, we enrolled a convenience sample of lower-risk acute chest pain patients from an urban ED. We presented patients with a hypothetical value for the risk of adverse outcome that could be decreased by hospitalization and asked them to identify the risk threshold at which they preferred admission versus discharge. We randomized patients to a method of numeric presentation (natural frequency or percentage) and the initial risk presented (low or high) and followed each numeric assessment with an assessment based on visually depicted risks. We enrolled 246 patients and analyzed data on 234 with complete information. The geometric mean risk threshold with numeric presentation was 1 in 736 (1 in 233 with a percentage presentation; 1 in 2,425 with a natural frequency presentation) and 1 in 490 with a visual presentation. Fifty-nine percent of patients (137/234) chose the lowest or highest risk values offered. One hundred fourteen patients chose different thresholds for numeric and visual risk presentations. We observed strong anchoring effects; patients starting with the lowest risk chose a lower threshold than those starting with the highest risk possible and vice versa. Using an expected utility model to measure patients' risk thresholds does not seem to work, either to find a stable risk preference within individuals or in groups. Further work in measurement of patients' risk tolerance or methods of shared decisionmaking not dependent on assessment of risk tolerance is needed. Copyright © 2014 American College of Emergency Physicians. Published by Mosby, Inc. All rights reserved.

Technical Assistance Program: Off to a Running Start (Newsletter)

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

Not Available

This newsletter describes key activities of the DOE Office of Indian Energy Policy and Programs for Winter 2012. Between December 2, 2011, and January 15, 2012, 46 American Indian and Alaska Native Tribes submitted applications to receive technical assistance through the program, which provides Tribes with on-the-ground technical support from DOE and National Renewable Energy Laboratory (NREL) staff to help move tribal energy efficiency and renewable energy projects forward. The applications are being considered through the Strategic Technical Assistance Response Team (START) selection process, which incorporates expert reviews and outreach to Tribes who present a need for assistance with theirmore » community-based energy efficiency and renewable energy projects. The final successful applicants will be selected based on the clarity of their requests for technical assistance and the ability of START to successfully work with each unique project or community. At least three selected Tribes in Alaska will receive technical assistance between March and May 2012, and up to five selected Tribes in the contiguous United States will receive technical assistance between March and August 2012. During the months of START Program activity, DOE and NREL experts will work in the two locations. In Alaska, START experts will work directly with community-based project teams to analyze local energy issues and provide assistance with energy projects and cost savings initiatives. This effort will be bolstered by DOE-IE's partnership with the Denali Commission, which will provide further assistance and expertise. In the lower 48 states, NREL experts will work with the selected renewable energy START projects to evaluate financial and technical feasibility and provide early development technical assistance to better position the projects for financing and construction. This on-the-ground technical assistance is part of a broader DOE-IE effort to make reliable, accurate technical information and skills-based training available to tribal communities throughout the United States. The primary goal of the START initiative, according to DOE-IE Director Tracey A. LeBeau, is to bring about the next generation of energy development in Indian Country. Through energy project planning, quality training, and technical assistance, The START program will leverage the early-stage resource characterization and pre-feasibility investments that DOE has made in Indian Country over the years, and unlock the energy resources that exist on tribal lands to help build a 21st century tribal energy economy. Working collaboratively with a select group of Tribes and Alaska Native entities, the DOE Office of Indian Energy, NREL, and the Denali Commission will empower tribal leaders to make informed energy decisions and help build capacity to bring tribal energy visions to fruition and get renewable energy projects off the ground, said LeBeau. Ultimately, these efforts will serve to further the Obama Administration and DOE's shared commitment to provide Native American and Alaska Native communities with the tools and resources they need to foster tribal energy self-sufficiency and sustainability, advancing job creation and enhancing economic competitiveness.« less

Mainstreaming Preschoolers: Children with Health Impairments. A Guide for Teachers, Parents, and Others Who Work with Health Impaired Preschoolers.

ERIC Educational Resources Information Center

Healy, Alfred; And Others

This guide to mainstreaming health impaired preschoolers is one of a series of eight manuals on mainstreaming preschoolers developed by Project Head Start. The guide is addressed to parents, teachers and other professionals and paraprofessionals. Chapter I presents information on the meaning, benefits and implementation of mainstreaming. The role…

A proposal of a renormalizable Nambu-Jona-Lasinio model

NASA Astrophysics Data System (ADS)

Cabo Montes de Oca, Alejandro

2018-03-01

A local and gauge invariant gauge field model including Nambu-Jona-Lasinio (NJL) and QCD Lagrangian terms in its action is introduced. Surprisingly, it becomes power counting renormalizable. This occurs thanks to the presence of action terms which modify the quark propagators, to become more decreasing that the Dirac one at large momenta in a Lee-Wick form, implying power counting renormalizability. The appearance of finite quark masses already in the tree approximation in the scheme is determined by the fact that the new action terms explicitly break chiral invariance. In this starting work we present the renormalized Feynman diagram expansion of the model and derive the formula for the degree of divergence of the diagrams. An explanation for the usual exclusion of the added Lagrangian terms is presented. In addition, the primitíve divergent graphs are identified. We start their evaluation by calculating the simpler contribution to the gluon polarization operator. The divergent and finite parts both result transverse as required by gauge invariance. The full evaluation of the various primitive divergences, which are required for completely defining the counterterm Feynman expansion will be considered in coming works, for further allowing to discuss the flavour symmetry breaking and unitarity.

Model Checking the Remote Agent Planner

NASA Technical Reports Server (NTRS)

Khatib, Lina; Muscettola, Nicola; Havelund, Klaus; Norvig, Peter (Technical Monitor)

2001-01-01

This work tackles the problem of using Model Checking for the purpose of verifying the HSTS (Scheduling Testbed System) planning system. HSTS is the planner and scheduler of the remote agent autonomous control system deployed in Deep Space One (DS1). Model Checking allows for the verification of domain models as well as planning entries. We have chosen the real-time model checker UPPAAL for this work. We start by motivating our work in the introduction. Then we give a brief description of HSTS and UPPAAL. After that, we give a sketch for the mapping of HSTS models into UPPAAL and we present samples of plan model properties one may want to verify.

Achievements of ITEP astrophysicists

NASA Astrophysics Data System (ADS)

Baklanov, P. V.; Blinnikov, S. I.; Manukovskiy, K. V.; Nadyozhin, D. K.; Panov, I. V.; Utrobin, V. P.; Yudin, A. V.

2016-08-01

Astrophysical research at the Institute for Theoretical and Experimental Physics (ITEP) is examined historically over a period of more than 30 years. The primary focus is on the supernova problem, starting with how it was approached in the classical pioneering work of Imshennik and Nadyozhin and ending with present-day models of these most powerful star explosions in the Universe. The paper also reviews work in other areas of astrophysics, including chemical nucleosynthesis, the cosmological use of type-IIn supernovae and dark matter models. The paper was written as a contribution to the 70th anniversary of ITEP.

Writing for professional publication. Part 7: structure and presentation.

PubMed

Fowler, John

How to get your work published is the essence of this series on writing for professional publication. The previous articles focused on the preparation required before you start writing your article, ways to create interest in the reader's mind, and the importance of writing a well-constructed abstract. In this article John Fowler, an experienced nursing lecturer and author, discusses the structure and presentation of a potential article and how this differs from an essay that may have been written as part of a university course.

Comparison of crossover and jab step start techniques for base stealing in baseball.

PubMed

Miyanishi, Tomohisa; Endo, So; Nagahara, Ryu

2017-11-01

Base stealing is an important tactic for increasing the chance of scoring in baseball. This study aimed to compare the crossover step (CS) and jab step (JS) starts for base stealing start performance and to clarify the differences between CS and JS starts in terms of three-dimensional lower extremity joint kinetics. Twelve male baseball players performed CS and JS starts, during which their motion and the force they applied to the ground were simultaneously recorded using a motion-capture system and two force platforms. The results showed that the normalised average forward external power, the average forward-backward force exerted by the left leg, and the forward velocities of the whole body centre of gravity generated by both legs and the left leg were significantly higher for the JS start than for the CS start. Moreover, the positive work done by hip extension during the left leg push-off was two-times greater for the JS start than the CS start. In conclusion, this study has demonstrated that the jab step start may be the better technique for a base stealing start and that greater positive work produced by left hip extension is probably responsible for producing its larger forward ground reaction force.

Benefit or burden: introducing paraprofessional support staff to health visiting teams: the case of Starting Well.

PubMed

Mackenzie, Mhairi

2006-11-01

With increased public-sector funding to expand and improve frontline services, pre-existing skill shortages within key professional workforces have become more acute. One response to this has been to encourage the development of skill-mix approaches which allow tasks previously undertaken by professional staff groupings to be assumed by new paraprofessional employees. Within the UK National Health Service, one group of professionals who are being challenged to change their way of working in this way are health visitors. Starting Well, one of Scotland's four health demonstration projects, which was established in 2000 to bring about a step-change in child health within deprived communities in Glasgow, operated as a pilot for such a skill-mix model of health visiting. The project was evaluated using a multimethod approach that encompassed the study of both processes and outcomes. The present paper reports on a process evaluation of the project's implementation that addressed the rationale underlying the development of Starting Well's skill-mix approach and the challenges which this model faced in practice. The perceptions of both managerial staff (n=18) and those working in practice (n=33) were gathered using semistructured interviews which sought to elicit and test Starting Well's theory of change in relation to the use of paraprofessional staff. Two sets of interviews were conducted with each group of staff between 2001 and 2003. Two main types of challenge were identified: deploying potentially vulnerable members of staff; and co-management of paraprofessionals by the health service and a voluntary-sector organisation. A potential challenge identified from the literature, i.e. that of implementing a new role within an existing team, proved to be less problematic within Starting Well. These issues are discussed in relation to current policy and practice debates.

Associations between number of consecutive night shifts and impairment of neurobehavioral performance during a subsequent simulated night shift.

PubMed

Magee, Michelle; Sletten, Tracey L; Ferguson, Sally A; Grunstein, Ronald R; Anderson, Clare; Kennaway, David J; Lockley, Steven W; Rajaratnam, Shantha Mw

2016-05-01

This study aimed to investigate sleep and circadian phase in the relationships between neurobehavioral performance and the number of consecutive shifts worked. Thirty-four shift workers [20 men, mean age 31.8 (SD 10.9) years] worked 2-7 consecutive night shifts immediately prior to a laboratory-based, simulated night shift. For 7 days prior, participants worked their usual shift sequence, and sleep was assessed with logs and actigraphy. Participants completed a 10-minute auditory psychomotor vigilance task (PVT) at the start (~21:00 hours) and end (~07:00 hours) of the simulated night shift. Mean reaction times (RT), number of lapses and RT distribution was compared between those who worked 2-3 consecutive night shifts versus those who worked 4-7 shifts. Following 4-7 shifts, night shift workers had significantly longer mean RT at the start and end of shift, compared to those who worked 2-3 shifts. The slowest and fastest 10% RT were significantly slower at the start, but not end, of shift among participants who worked 4-7 nights. Those working 4-7 nights also demonstrated a broader RT distribution at the start and end of shift and had significantly slower RT based on cumulative distribution analysis (5 (th), 25 (th), 50 (th), 75 (th)percentiles at the start of shift; 75th percentile at the end of shift). No group differences in sleep parameters were found for 7 days and 24 hours prior to the simulated night shift. A greater number of consecutive night shifts has a negative impact on neurobehavioral performance, likely due to cognitive slowing.

Interaction between a laminar starting immersed micro-jet and a parallel wall

NASA Astrophysics Data System (ADS)

Cabaleiro, Juan Martin; Laborde, Cecilia; Artana, Guillermo

2015-01-01

In the present work, we study the starting transient of an immersed micro-jet in close vicinity to a solid wall parallel to its axis. The experiments concern laminar jets (Re < 200) issuing from a 100 μm internal tip diameter glass micro-pipette. The effect of the confinement was studied placing the micro-pipette at different distances from the wall. The characterization of the jet was carried out by visualizations on which the morphology of the vortex head and trajectories was analyzed. Numerical simulations were used as a complementary tool for the analysis. The jet remains stable for very long distances away from the tip allowing for a similarity analysis. The self-similar behavior of the starting jet has been studied in terms of the frontline position with time. A symmetric and a wall dominated regime could be identified. The starting jet in the wall type regime, and in the symmetric regime as well, develops a self-similar behavior that has a relative rapid loss of memory of the preceding condition of the flow. Scaling for both regimes are those that correspond to viscous dominated flows.

Model for assessment of the velocity and force at the start of sprint race.

PubMed

Janjić, Nataša J; Kapor, Darko V; Doder, Dragan V; Petrović, Aleksandar; Jarić, Slobodan

2017-02-01

A mathematical model was developed for the assessment of the starting velocity and initial velocity and force of a 100-m sprint, based on a non-homogeneous differential equation with the air resistance proportional to the velocity, and the initial conditions for [Formula: see text], [Formula: see text]The use of this model requires the measurement of reaction time and segmental velocities over the course of the race. The model was validated by comparison with the data obtained from 100-m sprints of men: Carl Lewis (1988), Maurice Green (2001) and Usain Bolt (2009), and women: Florence Griffith-Joyner, Evelyn Ashford and Drechsler Heike (1988) showing a high level of agreement. Combined with the previous work of the authors, the present model allows for the assessment of important physical abilities, such as the exertion of a high starting force, development of high starting velocity and, later on, maximisation of the peak running velocity. These data could be of importance for practitioners to identify possible weaknesses and refine training methods for sprinters and other athletes whose performance depend on rapid movement initiations.

Work flow of signal processing data of ground penetrating radar case of rigid pavement measurements

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

Handayani, Gunawan

The signal processing of Ground Penetrating Radar (GPR) requires a certain work flow to obtain good results. Even though the Ground Penetrating Radar data looks similar with seismic reflection data, but the GPR data has particular signatures that the seismic reflection data does not have. This is something to do with coupling between antennae and the ground surface. Because of this, the GPR data should be treated differently from the seismic signal data processing work flow. Even though most of the processing steps still follow the same work flow of seismic reflection data such as: filtering, predictive deconvolution etc. Thismore » paper presents the work flow of GPR processing data on rigid pavement measurements. The processing steps start from raw data, de-Wow process, remove DC and continue with the standard process to get rid of noises i.e. filtering process. Some radargram particular features of rigid pavement along with pile foundations are presented.« less

Does Work Have an Impact on Depressive Symptoms and Parenting among Low-Income Mothers of Head Start Preschoolers? JCPR Working Paper.

ERIC Educational Resources Information Center

Raver, C. Cybele

This study examined whether low-wage work would affect low-income, Head Start-enrolled mothers' psychological well-being and parenting style over time. Respondents were low-income, rural and urban mothers participating in a study on parenting and child development. In 1996-97 and 1998-99, mothers completed interviews on demographics, depressive…

Fostering Earth Observation Regional Networks - Integrative and iterative approaches to capacity building

NASA Astrophysics Data System (ADS)

Habtezion, S.

2015-12-01

Fostering Earth Observation Regional Networks - Integrative and iterative approaches to capacity building Fostering Earth Observation Regional Networks - Integrative and iterative approaches to capacity building Senay Habtezion (shabtezion@start.org) / Hassan Virji (hvirji@start.org)Global Change SySTem for Analysis, Training and Research (START) (www.start.org) 2000 Florida Avenue NW, Suite 200 Washington, DC 20009 USA As part of the Global Observation of Forest and Land Cover Dynamics (GOFC-GOLD) project partnership effort to promote use of earth observations in advancing scientific knowledge, START works to bridge capacity needs related to earth observations (EOs) and their applications in the developing world. GOFC-GOLD regional networks, fostered through the support of regional and thematic workshops, have been successful in (1) enabling participation of scientists for developing countries and from the US to collaborate on key GOFC-GOLD and Land Cover and Land Use Change (LCLUC) issues, including NASA Global Data Set validation and (2) training young developing country scientists to gain key skills in EOs data management and analysis. Members of the regional networks are also engaged and reengaged in other EOs programs (e.g. visiting scientists program; data initiative fellowship programs at the USGS EROS Center and Boston University), which has helped strengthen these networks. The presentation draws from these experiences in advocating for integrative and iterative approaches to capacity building through the lens of the GOFC-GOLD partnership effort. Specifically, this presentation describes the role of the GODC-GOLD partnership in nurturing organic networks of scientists and EOs practitioners in Asia, Africa, Eastern Europe and Latin America.

Enabling Astronony Research in High Schools with the START Collaboratory

NASA Astrophysics Data System (ADS)

Greenberg, G. J.; Pennypacker, C. R.

2005-12-01

The START Collaboratory is a three-year, NSF funded project to create a Web-based national astronomy research collaboratory for high school students that will bring authentic scientific research to classrooms across the country. The project brings together the resources and experience of Hands-On Universe at the University of California at Berkeley, the Sloan Digital Sky Survey / National Virtual Observatory at Johns Hopkins University and the Northwestern University Collaboratory Project. The START Collaboratory seamlessly integrates access to gigabytes of searchable data and images from the Sloan Digital Sky Survey and the NVO into Web-based research notebooks and research reports that can be shared and discussed online. Requests for observations can be made through the START Telescope Request Broker. These observations can be viewed with the START Web Visualization Tool for visualization and measurement of FITS files. The project has developed a set of research scenarios to introduce students to the resources and tools available through the START Collaboratory, and to provide a model for network-based collaboration that engages students, teachers and professional scientists. Great attention has been paid to ensuring that the research scenarios result in accurate and authentic research products that are of real interest to working astronomers. In this panel presentation, we will describe the educational benefits and opportunities being seen in pilot testing with teachers and students, and in preparations for a teacher professional development project with the Adler Planetarium.

Cold starting of fluorescent lamps - part II: experiments on glow times and electrode damaging

NASA Astrophysics Data System (ADS)

Langer, Reinhard; Paul, Irina; Hilscher, Achim; Horn, Siegfried; Tidecks, Reinhard

2017-01-01

In the present work we present experiments on cold start and the resulting electrode damaging (reducing lamp life) of AC driven fluorescent lamps. The crucial parameter is the glow time, determined from time resolved measurements of lamp voltage and current. The relation between the energy consumed during glow phase and the glow time is studied. It turns out that there is no common threshold of energy until the glow-to-arc transition takes place, but strong energy input into the lamp yields short glow times. The transient behaviour from the glow to the arc regime is investigated and the stable operation points of the arc discharge are determined, yielding an arc discharge voltage-current characteristics of the lamp type investigated. The electrode damage is investigated as a function of the open source voltage and the ballast resistance. Subsequent cold starts lead to an increase of the glow time due to electrode damaging, i.e., the electrode damage accumulates. Different regeneration procedures and their effectiveness are compared. Regeneration burning turns out to be more effective than heating up the electrode. A criterion for avoiding high electrode damage is obtained, indicating that the average power during glow time should exceed 20 W.

History and development of research on wildlife parasites in southern Africa, with emphasis on terrestrial mammals, especially ungulates

PubMed Central

Junker, Kerstin; Horak, Ivan G.; Penzhorn, Banie

2014-01-01

The history of wildlife parasitology in South Africa, and to some extent southern Africa, is reviewed, giving a brief overview of the early years and following its development from the founding of the Onderstepoort Veterinary Institute in 1908 until the turn of the century. An emphasis is placed on game species. The main findings on protozoan parasites, including those of carnivores, are presented, starting in the 1890s and leading up to the first decade of the 21st century. Important developments with regard to the studies of arthropod and helminth parasites took place during a period of three decades, starting from the 1970s. Because of the sheer volume of work done by parasitologists during this time, this particular part of the overview concentrates on South African authors or authors working in South Africa at the time, and is limited to hosts that are members of the order Perissodactyla and the superorder Cetartiodactyla. PMID:25830101

Vocational education paths, youth activities, and underage drinking in Russia: How early does the trouble start?

PubMed

Lushin, Viktor; Jaccard, James; Ivaniushina, Valeria; Alexandrov, Daniel

2017-07-01

Working-class educational paths tend to be associated with elevated drinking. Little research has examined whether disproportionate alcohol use among vocationally oriented youth begins before or after the start of their vocational education. The present study analyzes a large sample of Russian middle-school students (N=1269; mean age=14.9), comparing the patterns of drinking among middle-schoolers oriented towards vocational educational, and their peers who do not plan a vocational education path. Results suggest that the orientation towards vocational education is associated with disproportionately high alcohol involvement among Russian middle-school students, even before they enter vocational schools. We studied if such difference could be partially explained by how youth orient towards extracurricular activities: discretionary peer time in risky contexts, reading for pleasure, working for pay, and religious activities. Reading demonstrated the strongest (negative) association with alcohol use, while religious activity unexpectedly revealed a positive (though weak) association with drinking. Research and policy implications are discussed. Copyright © 2017 Elsevier B.V. All rights reserved.

China Report, Economic Affairs, Number 243, Energy: Status and Development -- VI

DTIC Science & Technology

1982-06-29

the enterprises. 3. We should start the work of technical transformation and equipment renovation with energy conservation as the core. At present...transformation and equipment renovation for the purpose of energy conservation. The technology and many sets of equipment used for energy consumption...true that equipment renovation and technical transformation will cost money. Compared with investment in the exploitation of energy resources, however

How does Interhemispheric Communication in Visual Word Recognition Work? Deciding between Early and Late Integration Accounts of the Split Fovea Theory

ERIC Educational Resources Information Center

Van der Haegen, Lise; Brysbaert, Marc; Davis, Colin J.

2009-01-01

It has recently been shown that interhemispheric communication is needed for the processing of foveally presented words. In this study, we examine whether the integration of information happens at an early stage, before word recognition proper starts, or whether the integration is part of the recognition process itself. Two lexical decision…

Launching to the Moon, Mars, and Beyond

NASA Technical Reports Server (NTRS)

Shivers, C. Herbert

2008-01-01

This viewgraph presentation reviews the planned launching to the Moon, and Mars. It is important to build beyond the capacity to ferry astronauts and cargo to low Earth orbit. NASA is starting to design new vehicles using the past lessons to minimize cost, and technical risks. The training and education of engineers that will continue the work of designing, testing and flying the vehicles is important to NASA.

Numerical Investigations of High Pressure Acoustic Waves in Resonators

NASA Technical Reports Server (NTRS)

Athavale, Mahesh; Pindera, Maciej; Daniels, Christopher C.; Steinetz, Bruce M.

2004-01-01

This presentation presents work on numerical investigations of nonlinear acoustic phenomena in resonators that can generate high-pressure waves using acoustic forcing of the flow. Time-accurate simulations of the flow in a closed cone resonator were performed at different oscillation frequencies and amplitudes, and the numerical results for the resonance frequency and fluid pressure increase match the GRC experimental data well. Work on cone resonator assembly simulations has started and will involve calculations of the flow through the resonator assembly with and without acoustic excitation. A new technique for direct calculation of resonance frequency of complex shaped resonators is also being investigated. Script-driven command procedures will also be developed for optimization of the resonator shape for maximum pressure increase.

The treatment of tuberculosis in Ferrara (Italy) in the 19th century.

PubMed

Vicentini, Chiara Beatrice; Mares, Donatella; Guidi, Enrica; Angelini, Lauretta; Contini, Carlo; Manfredini, Stefano

2010-12-01

The present work is a review of the remedies in use in Ferrara against tuberculosis in the 1800s. The work started from the discovery of accounts describing methods and remedies. These remedies were also in use world wide. Of particular interest is the work by Antonio Campana, a famous professor of Pharmaceutical Chemistry and Botany in Ferrara, who wrote a pharmacopoeia which had several editions between 1797 and 1841. The Farmacopea Ferrarese was addressed to the apothecaries of Ferrara. Nevertheless, due to its great reputation it had an international distribution. It provided us with an exhaustive view about the medical field in Ferrara in the early 1800s. The remedies adopted in the city in the second half of the century were in line with those present abroad. The work was also supported by the discovery of statistical accounts of the Sant'Anna hospital from 1871. The manuscript written by Alessandro Bennati enabled elucidation of the methods used to treat tuberculosis in the second half of the century. Bennati's work is an historical document completed by the work of the physician Cesare Minerbi.

Lean principles optimize on-time vascular surgery operating room starts and decrease resident work hours.

PubMed

Warner, Courtney J; Walsh, Daniel B; Horvath, Alexander J; Walsh, Teri R; Herrick, Daniel P; Prentiss, Steven J; Powell, Richard J

2013-11-01

Lean process improvement techniques are used in industry to improve efficiency and quality while controlling costs. These techniques are less commonly applied in health care. This study assessed the effectiveness of Lean principles on first case on-time operating room starts and quantified effects on resident work hours. Standard process improvement techniques (DMAIC methodology: define, measure, analyze, improve, control) were used to identify causes of delayed vascular surgery first case starts. Value stream maps and process flow diagrams were created. Process data were analyzed with Pareto and control charts. High-yield changes were identified and simulated in computer and live settings prior to implementation. The primary outcome measure was the proportion of on-time first case starts; secondary outcomes included hospital costs, resident rounding time, and work hours. Data were compared with existing benchmarks. Prior to implementation, 39% of first cases started on time. Process mapping identified late resident arrival in preoperative holding as a cause of delayed first case starts. Resident rounding process inefficiencies were identified and changed through the use of checklists, standardization, and elimination of nonvalue-added activity. Following implementation of process improvements, first case on-time starts improved to 71% at 6 weeks (P = .002). Improvement was sustained with an 86% on-time rate at 1 year (P < .001). Resident rounding time was reduced by 33% (from 70 to 47 minutes). At 9 weeks following implementation, these changes generated an opportunity cost potential of $12,582. Use of Lean principles allowed rapid identification and implementation of perioperative process changes that improved efficiency and resulted in significant cost savings. This improvement was sustained at 1 year. Downstream effects included improved resident efficiency with decreased work hours. Copyright © 2013 Society for Vascular Surgery. Published by Mosby, Inc. All rights reserved.

Monitoring start of season in Alaska with GLOBE, AVHRR, and MODIS data

Treesearch

Jessica Robin; Ralph Dubayah; Elena Sparrow; Elissa Levine

2008-01-01

This work evaluates whether continuity between Advanced Very High Resolution Radiometer (AVHRR) and Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) is achievable for monitoring phenological changes in Alaska. This work also evaluates whether NDVI can detect changes in start of the growing season (SOS) in this region....

A cohort study of psychosocial work stressors on work ability among Brazilian hospital workers.

PubMed

Martinez, Maria Carmen; do Rosário Dias de Oliveira Latorre, Maria; Fischer, Frida Marina

2015-07-01

Hospital work is characterized by stressors that can influence work ability. The present study aims to assess the association between psychosocial work stressors and changes in work ability in a group of Brazilian hospital employees. From 1,022 workers included in a 3-year cohort started in 2009, 423 (41.4%) returned the applied questionnaires in 2012. Changes in work ability were considered as the dependent variable and the investigated psychosocial work stressors as independent variables. Logistic regression models adjusted for potential con-founders (demographic, occupational features, social support, overcommitment, and situations liable to cause pain/injury). High levels of exposure to psychosocial work stressors were significantly associated with decreased work ability: job strain (OR = 2.81), effort-reward imbalance (OR = 3.21). Strategies to reduce psychosocial work stressors should be considered to maintain hospital employees' work ability. Such strategies have implications for institutional and social policies and might be included in quality management programs. © 2015 Wiley Periodicals, Inc.

Starting from scratch.

PubMed

Christina, R

1999-11-01

This paper highlights the work of the Early Childhood Resource Center (ECRC) in promoting changes in gender-role stereotypes in Jerusalem. Established in 1985, ECRC provides training and advocacy in early childhood care, education, and development for the Palestinian Territories and East Jerusalem. In collaboration with other nongovernmental organizations and the New Palestinian Authority, ECRC promoted an integrated system of early childhood programs for Palestine. The Center helps people who work with young children, particularly those in rural villages and refugee camps. Central to the work of ECRC is the Convention on the Rights of the Child, in which freedom from discrimination (including gender discrimination) is a basic right. Components of the training program of ECRC are summarized and program results are presented.

The Physical and Mental Health of Head Start Staff: The Pennsylvania Head Start Staff Wellness Survey, 2012

PubMed Central

Becker, Brandon D.; Herman, Allison N.; Gooze, Rachel A.

2013-01-01

Introduction Despite attention to the health of low-income children in Head Start, little is known about the health of adults working for the program. The objective of our study was to compare the physical and mental health of women working in Pennsylvania Head Start programs with the health of US women who have similar sociodemographic characteristics. Methods We used data from a web-based survey in 2012 in which 2,199 of 3,375 (65.2%) staff in 66 Pennsylvania Head Start programs participated. For the 2,122 female respondents, we determined the prevalence of fair or poor health status, frequent (≥14 d/mo) unhealthy days, frequent (≥10 d/y) work absences due to illness, diagnosed depression, and 3 or more of 6 physical health conditions. We compared these prevalences with those found in 2 national samples of employed women of similar age, education, race/ethnicity, and marital status. Results Among Head Start staff, 85.7% were non-Hispanic white, 62.4% were married, and 60.3% had completed college. The prevalence (% [95% confidence interval]) of several health indicators was higher in Head Start staff than in the national samples: fair or poor health (14.6% [13.1%–16.1%] vs 5.1% [4.5%–5.6%]), frequent unhealthy days (28.3% [26.3%–30.2%] vs 14.5% [14.1%–14.9%]), diagnosed depression (23.5% [21.7%–25.3%] vs 17.6% [17.1%–18.0%]), and 3 or more physical health conditions (21.8% [20.0%–23.6%] vs 12.6% [11.7%–13.5%]). Conclusion Women working with children in Head Start programs have poorer physical and mental health than do US women who have similar sociodemographic characteristics. PMID:24176085

The Painting-Sponging Analogy for Chemical Equilibrium

NASA Astrophysics Data System (ADS)

Gamitz, Adoni

1997-05-01

An analogy for chemical equilibrium is presented, in which high school or younger students can follow the advance towards equilibrium and its final dynamic nature. The relative opposition between forward and backward processes in a real chemical reaction is exemplified by the distance of a road line that is painted by one person and erased by another, both with different skills and working speeds. The graphical results of the progress of the line distance is entirely similar to the increasing of products concentration in a chemical reaction starting from the reactants. In the analogy, the final equilibrium position is independent of the starting point, as well as in a real chemical process. A simple basic program is included for interactive learning purposes.

START: an advanced radiation therapy information system.

PubMed

Cocco, A; Valentini, V; Balducci, M; Mantello, G

1996-01-01

START is an advanced radiation therapy information system (RTIS) which connects direct information technology present in the devices with indirect information technology for clinical, administrative, information management integrated with the hospital information system (HIS). The following objectives are pursued: to support decision making in treatment planning and functional and information integration with the rest of the hospital; to enhance organizational efficiency of a Radiation Therapy Department; to facilitate the statistical evaluation of clinical data and managerial performance assessment; to ensure the safety and confidentiality of used data. For its development a working method based on the involvement of all operators of the Radiation Therapy Department, was applied. Its introduction in the work activity was gradual, trying to reuse and integrate the existing information applications. The START information flow identifies four major phases: admission, visit of admission, planning, therapy. The system main functionalities available to the radiotherapist are: clinical history/medical report linking function; folder function; planning function; tracking function; electronic mail and banner function; statistical function; management function. Functions available to the radiotherapy technician are: the room daily list function; management function: to the nurse the following functions are available: patient directing function; management function. START is a departmental client (pc-windows)-server (unix) developed on an integrated database of all information of interest (clinical, organizational and administrative) coherent with the standard and with a modular architecture which can evolve with additional functionalities in subsequent times. For a more thorough evaluation of its impact on the daily activity of a radiation therapy facility, a prolonged clinical validation is in progress.

Deficits in working memory and motor performance in the APP/PS1ki mouse model for Alzheimer's disease.

PubMed

Wirths, Oliver; Breyhan, Henning; Schäfer, Stephanie; Roth, Christian; Bayer, Thomas A

2008-06-01

The APP/PS1ki mouse model for Alzheimer's disease (AD) exhibits robust brain and spinal cord axonal degeneration and hippocampal CA1 neuron loss starting at 6 months of age. It expresses human mutant APP751 with the Swedish and London mutations together with two FAD-linked knocked-in mutations (PS1 M233T and PS1 L235P) in the murine PS1 gene. The present report covers a phenotypical analysis of this model using either behavioral tests for working memory and motor performance, as well as an analysis of weight development and body shape. At the age of 6 months, a dramatic, age-dependent change in all of these properties and characteristics was observed, accompanied by a significantly reduced ability to perform working memory and motor tasks. The APP/PS1ki mice were smaller and showed development of a thoracolumbar kyphosis, together with an incremental loss of body weight. While 2-month-old APP/PS1ki mice were inconspicuous in all of these tasks and properties, there is a massive age-related impairment in all tested behavioral paradigms. We have previously reported robust axonal degeneration in brain and spinal cord, as well as abundant hippocampal CA1 neuron loss starting at 6 months of age in the APP/PS1ki mouse model, which coincides with the onset of motor and memory deficits described in the present report.

HoloNetwork: communicating science through holography

NASA Astrophysics Data System (ADS)

Pombo, Pedro; Santos, Emanuel; Magalhães, Carolina

2017-03-01

Since 1997 a program dedicated to holography has been developed and implemented in Portugal. This program started with focus on schools and science education. The HoloNetwork was created and it has been spread at a National level, involving a group of thirty schools and hundreds of students and teachers. In 2009 this network started to work to achieve a new target, the general public. With this goal, a larger program was developed with focus on science and society and on science communication through holography. For the implementation of this new program, special holography outreach activities were built, dedicated to informal learning and seven Science Centers around Portugal were add into the HoloNetwork. During last years, we have been working on holography, based on two main branches, one dedicated to schools and with the aimed to promote physics teaching and to teach how to make holograms, and another dedicated to society and with the aimed to promote holography and to increase scientific literacy. This paper would analyze the educational program, all holography outreach activities, exhibitions or events, all equipments, materials and setups used and it would present the holographic techniques explored with students or with the public. Finally, the results obtained in this work would be present and explored, with focus on students impact and outcomes, taking into account the public engagement on holography and its effect into scientific culture and analyzing the quality of holograms made by students and by the general public. subject.

Employment exit and entry among U.S. adults with and without arthritis during the Great Recession. A longitudinal study: 2007-2009, NHIS/MEPS.

PubMed

Theis, K A; Roblin, D; Helmick, C G; Luo, R

2018-05-28

Negative employment consequences of arthritis are known but not fully understood. Examining transitions in and out of work can provide valuable information. To examine associations of arthritis with employment during the Great Recession and predictors of employment transitions. Data were for 3,277 adults ages 30-62 years with and without arthritis from the 2007 National Health Interview Survey followed in the Medical Expenditure Panel Survey 2008-2009. Employment (working vs. not working) was ascertained at baseline and five follow-ups. We estimated Kaplan Meier survival curves with 95% confidence intervals (CI) separately for time to stopping work (working at baseline) and starting work (not working at baseline) using Cox proportional hazards regression models with hazard ratios (HR). Arthritis was significantly associated with greater risk of stopping work (HR = 1.7, 95% CI = 1.3-2.2; adjusted HR= 1.5, 95% CI = 1.1-2.0) and significantly associated with 40% lower chance of starting work (HR = 0.6, 95% CI = 0.4-0.8); which reversed on adjustment (HR = 1.5, 95% CI = 1.0-2.2). Employment predictors were mixed by outcome. During the Great Recession, adults with arthritis stopped work at higher rates and started work at lower rates than those without arthritis.

When Work Starts in Childhood: The Anticipatory Socialization Process of Classical Musicians

ERIC Educational Resources Information Center

Gabor, Elena

2009-01-01

Classical music is distinguished among professions in several ways: work has to start in childhood in order to achieve proficiency; the training takes an average of 16 years in order to become a professional musician (Manturzewska, 1990); the cost of training is high; a high level of discipline is required to develop performance abilities…

[Integrative psychosomatics: contributions to a reform of medical training].

PubMed

Köhle, Karl; Koerfer, Armin; Thomas, Walter; Schaefer, Ann; Sonntag, Bernd; Obliers, Rainer

2003-02-01

Medical training has so far mainly emphasised teaching of knowledge and neglected fostering of theoretical and practical competence in doctors' occupation. The consequences of these deficits are often experienced as "practice shock" when young doctors start working. New concepts of teaching moduls in psychosocial subjects may enhance medical competence. We present some of the contents and didactic concepts which we have implemented in the medical curriculum of Cologne University.

Extended analysis of the 5g. -->. 4f emissions in H/sub 2/

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

Chang, E.S.; Pulchtopek, S.; Eyler, E.E.

1984-01-15

An analysis starting from Hund's case d has been used to extend the work of Herzberg and Jungen on the 5g..-->..4f emissions in H/sub 2/. A simple analytical expression for the line intensities is presented that agrees with their calculations is about 1%. All of the experimentally observed lines have been accounted for by including higher vibrational levels in our calculations.

Identifying Determinants of PARP Inhibitor Sensitivity in Ovarian Cancer

DTIC Science & Technology

2016-10-01

inhibitors. Ovarian cancer patients that harbored germ- line BRCA1 mutations treated with PARP inhibitors exhibited meaningful responses in early phase...hypothesized that a range of common ovarian cancer predisposing germ- line BRCA1 gene mutations produce semi-functional proteins that are capable of...we have started our work examining exome sequences and gene expression in PARPi sensitive and resistance cancer cell lines . I attended and presented

Mountain pine beetles: A century of knowledge, control attempts, and impacts central to the Black Hills

Treesearch

Russell T. Graham; Lance A. Asherin; Michael A. Battaglia; Terrie Jain; Stephen A. Mata

2016-01-01

This publication chronicles the understanding, controlling, and impacts of mountain pine beetles (MPB) central to the Black Hills of South Dakota and Wyoming from the time they were described by Hopkins in 1902, through the presentation of data from work started by Schmid and Mata in 1985. The plots established by these two men from 1985 through 1994 were subjected to...

Restructuring the Uranium Mining Industry in Romania: Actual Situation and Prospects

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

Georgescu, P.D.; Petrescu, S.T.; Iuhas, T.F.

2002-07-01

Uranium prospecting in Romania has started some 50 years ago, when a bilateral agreement between Romania and the former Soviet Union had been concluded and a joint Romanian-Soviet enterprise was created. The production started in 1952 by the opening of some deposits from western Transylvania (Bihor and Ciudanovita). From 1962 the production has continued only with Romanian participation on the ore deposit Avram Iancu and from 1985 on the deposits from Eastern Carpathians (Crucea and Botusana). Starting with 1978 the extracted ores have been completely processed in the Uranium Ore Processing Plant from Feldioara, Brasov. Complying with the initial stipulationsmore » of the Nuclear National Program launched at the beginning of the 1980's, the construction of a nuclear power station in Cernavoda has started in Romania, using natural uranium and heavy water (CANDU type), having five units of 650 MW installed capacity. After 1989 this initial Nuclear National Program was revised and the construction of the first unit (number 1) was finalized and put in operation in 1996. In 2001 the works at the unit number 2 were resumed, having the year 2005 as the scheduled activating date. The future of the other 3 units, being in different construction phases, hasn't been clearly decided. Taking into consideration the exhaustion degree of some ore deposits and from the prospect of exploiting other ore deposits, the uranium industry will be subject of an ample restructuring process. This process includes workings of modernization of the mines in operation and of the processing plant, increasing the profitableness, lowering of the production costs by closing out and ecological rehabilitation of some areas affected by mining works and even new openings of some uraniferous exploitations. This paper presents the actual situation and the prospects of uranium mining industry on the base of some new technical and economical strategic concepts in accordance with the actual Romanian Program for Nuclear Energetics. (authors)« less

Optimization of a Fully-Pulsed Jet in a Fluid of Similar Density

NASA Astrophysics Data System (ADS)

Krueger, Paul S.; Gharib, Morteza

1998-11-01

In a previous work, Gharib et al.(Morteza Gharib, Edmond Rambod, Karim Shariff, "A Universal Time Scale for Vortex Ring Formation," JFM, vol. 360, pp. 121-140, 1998) have studied vortex rings generated through impulsively started jets using a piston/cylinder arrangement. This work showed that the vortex ring that formed at the leading edge of the jet reached a maximum strength for a piston stroke to diameter ratio (L/D) of approximately 4 for a wide range of piston motions and jet exit boundaries. This result suggests interesting consequences for a fully-pulsed jet, which is simply a series of impulsively started jets strung together. Specifically, the thrust of the present investigation is to study how the physical behavior of a fully-pulsed jet varies as both L/D and the pulsing frequency of the jet (rate at which pulses are ejected) are varied. To this end, a piston/cylinder arrangement with a stepper motor is used to generate a fully-pulsed jet with different L/D and pulsing frequency (f) combinations. The thrust produced by these various jets is measured directly and used as a gauge of the effectiveness of the pulsed jet. Combinations of L/D and f leading to optimization of the pulsed jet will be presented.

Morning employees are perceived as better employees: employees' start times influence supervisor performance ratings.

PubMed

Yam, Kai Chi; Fehr, Ryan; Barnes, Christopher M

2014-11-01

In this research, we draw from the stereotyping literature to suggest that supervisor ratings of job performance are affected by employees' start times-the time of day they first arrive at work. Even when accounting for total work hours, objective job performance, and employees' self-ratings of conscientiousness, we find that a later start time leads supervisors to perceive employees as less conscientious. These perceptions in turn cause supervisors to rate employees as lower performers. In addition, we show that supervisor chronotype acts as a boundary condition of the mediated model. Supervisors who prefer eveningness (i.e., owls) are less likely to hold negative stereotypes of employees with late start times than supervisors who prefer morningness (i.e., larks). Taken together, our results suggest that supervisor ratings of job performance are susceptible to stereotypic beliefs based on employees' start times. (PsycINFO Database Record (c) 2014 APA, all rights reserved).

Cool-down and frozen start-up behavior of a grooved water heat pipe

NASA Technical Reports Server (NTRS)

Jang, Jong Hoon

1990-01-01

A grooved water heat pipe was tested to study its characteristics during the cool-down and start-up periods. The water heat pipe was cooled down from the ambient temperature to below the freezing temperature of water. During the cool-down, isothermal conditions were maintained at the evaporator and adiabatic sections until the working fluid was frozen. When water was frozen along the entire heat pipe, the heat pipe was rendered inactive. The start-up of the heat pipe from this state was studied under several different operating conditions. The results show the existence of large temperature gradients between the evaporator and the condenser, and the moving of the melting front of the working fluid along the heat pipe. Successful start-up was achieved for some test cases using partial gravity assist. The start-up behavior depended largely on the operating conditions.

Advanced Teleprocessing Systems.

DTIC Science & Technology

1984-09-30

up delay depends on the amount of work (or the number of customers) ar- riving to the system at the beginning of the start-up period. 2) A system...types of systems are analyzed: 1) A system where the start-up delay depends on the amount of work (or the number of customers) ar- riving to the system...net- work where terminals are randomly distributed on the plane, are able to capture transmitted signals, and use slotted ALOHA to access the chan- nel

Wireless "Jump" Starts for Partly Disabled Equipment

NASA Technical Reports Server (NTRS)

Castle, K. D.

1986-01-01

Equipment activated when normal remote starting does not work Beam from nearby station first carries raw energy and then subsystemactivating signals to equipment crippled by discharged storage batteries. Operators start up equipment without approaching it under hazardous conditions. Potential terrestrial applications for scheme include starting of robots on such remotely-controlled hazardous tasks as handling of explosives or retrieval or deposition of objects in hostile environments.

The James Webb Space Telescope RealWorld-InWorld Design Challenge: Involving Professionals in a Virtual Classroom

NASA Astrophysics Data System (ADS)

Masetti, Margaret; Bowers, S.

2011-01-01

Students around the country are becoming experts on the James Webb Space Telescope by designing solutions to two of the design challenges presented by this complex mission. RealWorld-InWorld has two parts; the first (the Real World portion) has high-school students working face to face in their classroom as engineers and scientists. The InWorld phase starts December 15, 2010 as interested teachers and their teams of high school students register to move their work into a 3D multi-user virtual world environment. At the start of this phase, college students from all over the country choose a registered team to lead InWorld. Each InWorld team is also assigned an engineer or scientist mentor. In this virtual world setting, each team refines their design solutions and creates a 3D model of the Webb telescope. InWorld teams will use 21st century tools to collaborate and build in the virtual world environment. Each team will learn, not only from their own team members, but will have the opportunity to interact with James Webb Space Telescope researchers through the virtual world setting, which allows for synchronous interactions. Halfway through the challenge, design solutions will be critiqued and a mystery problem will be introduced for each team. The top five teams will be invited to present their work during a synchronous Education Forum April 14, 2011. The top team will earn scholarships and technology. This is an excellent opportunity for professionals in both astronomy and associated engineering disciplines to become involved with a unique educational program. Besides the chance to mentor a group of interested students, there are many opportunities to interact with the students as a guest, via chats and presentations.

The IAU Division A Working Group on the Third Realization of the ICRF: Background, Goals, Plans

NASA Astrophysics Data System (ADS)

Gaume, Ralph

2015-08-01

The XXVIII General Assembly of the IAU (Beijing, 2012) established the Division A Working Group on the Third Realization of the International Celestial Reference Frame (ICRF). The adopted charter of the ICRF3 Working Group includes a commitment to report on the implementation and execution plans for ICRF3 during the XXIX General Assembly of the IAU along with a targeted completion and presentation of ICRF3 in 2018 to the XXX General Assembly for adoption. This talk will discuss the background, purpose, and overall implementation plan for ICRF3, and motivate the concept, currently under consideration by the ICRF3 Working Group, that future realizations of the ICRF be based on multi-frequency astrometric data, starting with ICRF3.

Model-based reasoning for system and software engineering: The Knowledge From Pictures (KFP) environment

NASA Technical Reports Server (NTRS)

Bailin, Sydney; Paterra, Frank; Henderson, Scott; Truszkowski, Walt

1993-01-01

This paper presents a discussion of current work in the area of graphical modeling and model-based reasoning being undertaken by the Automation Technology Section, Code 522.3, at Goddard. The work was initially motivated by the growing realization that the knowledge acquisition process was a major bottleneck in the generation of fault detection, isolation, and repair (FDIR) systems for application in automated Mission Operations. As with most research activities this work started out with a simple objective: to develop a proof-of-concept system demonstrating that a draft rule-base for a FDIR system could be automatically realized by reasoning from a graphical representation of the system to be monitored. This work was called Knowledge From Pictures (KFP) (Truszkowski et. al. 1992). As the work has successfully progressed the KFP tool has become an environment populated by a set of tools that support a more comprehensive approach to model-based reasoning. This paper continues by giving an overview of the graphical modeling objectives of the work, describing the three tools that now populate the KFP environment, briefly presenting a discussion of related work in the field, and by indicating future directions for the KFP environment.

Head Start. What Works Clearinghouse Intervention Report

ERIC Educational Resources Information Center

What Works Clearinghouse, 2015

2015-01-01

"Head Start" is a national, federally funded program that provides services to promote school readiness for children from birth to age 5 from predominantly low-income families. Based on a review of the research, the WWC found "Head Start" to have potentially positive effects on general reading achievement and no discernible…

Laser-assisted homogeneous charge ignition in a constant volume combustion chamber

NASA Astrophysics Data System (ADS)

Srivastava, Dhananjay Kumar; Weinrotter, Martin; Kofler, Henrich; Agarwal, Avinash Kumar; Wintner, Ernst

2009-06-01

Homogeneous charge compression ignition (HCCI) is a very promising future combustion concept for internal combustion engines. There are several technical difficulties associated with this concept, and precisely controlling the start of auto-ignition is the most prominent of them. In this paper, a novel concept to control the start of auto-ignition is presented. The concept is based on the fact that most HCCI engines are operated with high exhaust gas recirculation (EGR) rates in order to slow-down the fast combustion processes. Recirculated exhaust gas contains combustion products including moisture, which has a relative peak of the absorption coefficient around 3 μm. These water molecules absorb the incident erbium laser radiations ( λ=2.79 μm) and get heated up to expedite ignition. In the present experimental work, auto-ignition conditions are locally attained in an experimental constant volume combustion chamber under simulated EGR conditions. Taking advantage of this feature, the time when the mixture is thought to "auto-ignite" could be adjusted/controlled by the laser pulse width optimisation, followed by its resonant absorption by water molecules present in recirculated exhaust gas.

Poster — Thur Eve — 30: 4D VMAT dose calculation methodology to investigate the interplay effect: experimental validation using TrueBeam Developer Mode and Gafchromic film

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

Teke, T; Milette, MP; Huang, V

2014-08-15

The interplay effect between the tumor motion and the radiation beam modulation during a VMAT treatment delivery alters the delivered dose distribution from the planned one. This work present and validate a method to accurately calculate the dose distribution in 4D taking into account the tumor motion, the field modulation and the treatment starting phase. A QUASAR™ respiratory motion phantom was 4D scanned with motion amplitude of 3 cm and with a 3 second period. A static scan was also acquired with the lung insert and the tumor contained in it centered. A VMAT plan with a 6XFFF beam wasmore » created on the averaged CT and delivered on a Varian TrueBeam and the trajectory log file was saved. From the trajectory log file 10 VMAT plans (one for each breathing phase) and a developer mode XML file were created. For the 10 VMAT plans, the tumor motion was modeled by moving the isocentre on the static scan, the plans were re-calculated and summed in the treatment planning system. In the developer mode, the tumor motion was simulated by moving the couch dynamically during the treatment. Gafchromic films were placed in the QUASAR phantom static and irradiated using the developer mode. Different treatment starting phase were investigated (no phase shift, maximum inhalation and maximum exhalation). Calculated and measured isodose lines and profiles are in very good agreement. For each starting phase, the dose distribution exhibit significant differences but are accurately calculated with the methodology presented in this work.« less

The Physics and Applications of High Brightness Beams: Working Group C Summary on Applications to FELS

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

Nuhn, Heinz-Dieter

2003-03-19

This is the summary of the activities in working group C, ''Application to FELs,'' which was based in the Bithia room at the Joint ICFA Advanced Accelerator and Beam Dynamics Workshop on July 1-6, 2002 in Chia Laguna, Sardinia, Italy. Working group C was small in relation to the other working groups at that workshop. Attendees include Enrica Chiadroni, University of Rome ape with an identical pulse length. ''La Sapienza'', Luca Giannessi, ENEA, Steve Lidia, LBNL, Vladimir Litvinenko, Duke University, Patrick Muggli, UCLA, Alex Murokh, UCLA, Heinz-Dieter Nuhn, SLAC, Sven Reiche, UCLA, Jamie Rosenzweig, UCLA, Claudio Pellegrini, UCLA, Susan Smith,more » Daresbury Laboratory, Matthew Thompson, UCLA, Alexander Varfolomeev, Russian Research Center, plus a small number of occasional visitors. The working group addressed a total of nine topics. Each topic was introduced by a presentation, which initiated a discussion of the topic during and after the presentation. The speaker of the introductory presentation facilitated the discussion. There were six topics that were treated in stand-alone sessions of working group C. In addition, there were two joint sessions, one with working group B, which included one topic, and one with working group C, which included two topics. The presentations that were given in the joint sessions are summarized in the working group summary reports for groups B and D, respectively. This summary will only discuss the topics that were addressed in the stand-alone sessions, including Start-To-End Simulations, SASE Experiment, PERSEO, ''Optics Free'' FEL Oscillators, and VISA II.« less

Designing a Feasibility Study: A Starting Point for Considering New Management Initiatives for Working Parents.

ERIC Educational Resources Information Center

Friedman, Dana E.

This brief paper was prepared as a starting point for employers considering the adoption of a new management initiative for working parents. It is not an exhaustive outline of all considerations in the decision-making process, nor does it provide solutions to all the known pitfalls. It does, however, suggest the potential scope and complexity of…

School-to-Work Transition in Hong Kong: Suggestions for the Vocationalization of Secondary Education

ERIC Educational Resources Information Center

Lee, John Chi-Kin; Pavlova, Margarita; Maclean, Rupert

2016-01-01

Since the start of the new century, basic and senior schools have started to encounter curriculum reforms, and vocational education has experienced substantial changes. Based on the changing context in the past 10 or more years, this study examines the issue of school-to-work transition from the perspective of the vocationalization of secondary…

Learning from Sure Start: Working with Young Children and Their Families

ERIC Educational Resources Information Center

Weinberger, Jo, Ed.; Pickstone, Caroline, Ed.; Hannon, Peter, Ed.

2005-01-01

The book comes out of a University research project that has worked closely with one local programme over five years from its beginning. Sure Start is a national government initiative that targets families with children aged up to the age of four in areas of social and economic disadvantage, to promote development so children are ready to thrive…

Too Young to Leave the Nest: The Effects of School Starting Age. NBER Working Paper No. 13969

ERIC Educational Resources Information Center

Black, Sandra E.; Devereux, Paul J.; Salvanes, Kjell G.

2008-01-01

Does it matter when a child starts school? While the popular press seems to suggest it does, there is limited evidence of a long-run effect of school starting age on student outcomes. This paper uses data on the population of Norway to examine the role of school starting age on longer-run outcomes such as IQ scores at age 18, educational…

ReSTART: A Novel Framework for Resource-Based Triage in Mass-Casualty Events.

PubMed

Mills, Alex F; Argon, Nilay T; Ziya, Serhan; Hiestand, Brian; Winslow, James

2014-01-01

Current guidelines for mass-casualty triage do not explicitly use information about resource availability. Even though this limitation has been widely recognized, how it should be addressed remains largely unexplored. The authors present a novel framework developed using operations research methods to account for resource limitations when determining priorities for transportation of critically injured patients. To illustrate how this framework can be used, they also develop two specific example methods, named ReSTART and Simple-ReSTART, both of which extend the widely adopted triage protocol Simple Triage and Rapid Treatment (START) by using a simple calculation to determine priorities based on the relative scarcity of transportation resources. The framework is supported by three techniques from operations research: mathematical analysis, optimization, and discrete-event simulation. The authors? algorithms were developed using mathematical analysis and optimization and then extensively tested using 9,000 discrete-event simulations on three distributions of patient severity (representing low, random, and high acuity). For each incident, the expected number of survivors was calculated under START, ReSTART, and Simple-ReSTART. A web-based decision support tool was constructed to help providers make prioritization decisions in the aftermath of mass-casualty incidents based on ReSTART. In simulations, ReSTART resulted in significantly lower mortality than START regardless of which severity distribution was used (paired t test, p<.01). Mean decrease in critical mortality, the percentage of immediate and delayed patients who die, was 8.5% for low-acuity distribution (range ?2.2% to 21.1%), 9.3% for random distribution (range ?0.2% to 21.2%), and 9.1% for high-acuity distribution (range ?0.7% to 21.1%). Although the critical mortality improvement due to ReSTART was different for each of the three severity distributions, the variation was less than 1 percentage point, indicating that the ReSTART policy is relatively robust to different severity distributions. Taking resource limitations into account in mass-casualty situations, triage has the potential to increase the expected number of survivors. Further validation is required before field implementation; however, the framework proposed in here can serve as the foundation for future work in this area. 2014.

First PIC simulations modeling the interaction of ultra-intense lasers with sub-micron, liquid crystal targets

NASA Astrophysics Data System (ADS)

McMahon, Matthew; Poole, Patrick; Willis, Christopher; Andereck, David; Schumacher, Douglass

2014-10-01

We recently introduced liquid crystal films as on-demand, variable thickness (50-5000 nanometers), low cost targets for intense laser experiments. Here we present the first particle-in-cell (PIC) simulations of short pulse laser excitation of liquid crystal targets treating Scarlet (OSU) class lasers using the PIC code LSP. In order to accurately model the target evolution, a low starting temperature and field ionization model are employed. This is essential as large starting temperatures, often used to achieve large Debye lengths, lead to expansion of the target causing significant reduction of the target density before the laser pulse can interact. We also present an investigation of the modification of laser pulses by very thin targets. This work was supported by the DARPA PULSE program through a grant from ARMDEC, by the US Department of Energy under Contract No. DE-NA0001976, and allocations of computing time from the Ohio Supercomputing Center.

Drug Reaction with Eosinophilia and Systemic Symptom (DRESS) induced by carbamazepine: a case report and literature review

PubMed Central

EL Omairi, Nissrine; Abourazzak, Sanae; Chaouki, Sanae; Atmani, Samir; Hida, Moustapha

2014-01-01

Drug-induced hypersensitivity or Drug Reaction with Eosinophilia and Systemic Symptom (DRESS) is a severe adverse drug-induced reaction. Diagnosing DRESS is challenging due to the diversity of cutaneous eruption and organs involved. Most of the aromatic anticonvulsants, such as phenytoin, phenobarbital, and carbamazepine, can induce DRESS. Culprit drug withdrawal and corticosteroids constituted the mainstay of DRESS treatment. We describe a 6 year-old boy who presented fever and rash 4 weeks after starting carbamazepine. Investigation revealed leukocytosis, atypical lymphocytosis, and elevated serum transaminases. The diagnosis of DREES syndrome was made, Carbamazepine was stopped and replaced initially by Clobazam and by Valproic acid after discharge, no systemic corticotherapy was prescribed. Symptoms began to resolve within two weeks, and by one month later her laboratory values had returned to normal. The aim of this work is to raise awareness general practitioner and pediatricians to suspect Dress syndrome in patients who present with unusual complaints and skin findings after starting any antiepileptic drug. PMID:25360193

Development in electrophoresis: instrumentation for two-dimensional gel electrophoresis of protein separation and application of capillary electrophoresis in micro-bioanalysis

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

Xu, Aoshuang

2008-01-01

This dissertation begins with a general introduction of topics related to this work. The following chapters contain three scientific manuscripts, each presented in a separate chapter with accompanying tables, figures, and literature citations. The final chapter summarizes the work and provides some prospective on this work. This introduction starts with a brief treatment of the basic principles of electrophoresis separation, followed by a discussion of gel electrophoresis and particularly polyacrylamide gel electrophoresis for protein separation, a summary of common capillary electrophoresis separation modes, and a brief treatment of micro-bioanalysis application of capillary electrophoresis, and ends with an overview of proteinmore » conformation and dynamics.« less

[Monitoring of occupational activities under the risk of heat stress: use of mathematical models in the prediction of physiological parameters].

PubMed

Terzi, R; Catenacci, G; Marcaletti, G

1985-01-01

Some authors proposed mathematical models that, starting from standardized conditions of environmental microclimate parameters, thermal impedance of the clothing, and energetic expenditure allowed the forecast of the body temperature and heart rate variations in respect to the basal values in subjects standing in the same environment. In the present work we verify the usefulness of these models applied to the working tasks characterized by standardized job made under unfavourable thermal conditions. In subject working in an electric power station the values of the body temperature and heart rate are registered and compared with the values obtained by the application of the studied models. The results are discussed in view of the practical use.

Working with a Head Start Population with Asthma: Lessons Learned

ERIC Educational Resources Information Center

Nelson, Belinda W.; Clark, Noreen M.; Valerio, Melissa A.; Houle, Christy R.; Brown, Randall W.; Brown, Clive

2006-01-01

The Early Childhood Asthma Project involved asthma case identification in 35 Head Start centers in Detroit, MI, and attempted implementation of an intervention designed to help families manage a child's asthma more effectively. Surveys were distributed to the parents of all Head Start children (3408), and 2198 complete surveys were returned. Case…

Start-Up Training in Mississippi: Program Development Guide.

ERIC Educational Resources Information Center

Brooks, Kent; And Others

Due to recent industrial growth in Mississippi and the shortage of trained manpower in numerous occupations, start-up training programs have originated to provide a pretrained work force for new or expanding industry in the State. Each start-up training program is a joint effort between a new or expanding industry and a public educational…

Sustaining a Healthy Environment: Training Guides for the Head Start Learning Community.

ERIC Educational Resources Information Center

Bowman (James) Associates, San Francisco, CA.

Exploring and working with environmental issues can be exciting and enriching for Head Start staff. The goal of the technical guide is to broaden Head Start staff members' understanding of the natural environment so they can better incorporate environmental enrichment and environmental protection into their programs. The guide is organized into…

The Battle Over Head Start: What the Research Shows. NIEER Working Papers.

ERIC Educational Resources Information Center

Barnett, W. Steven

As a comprehensive child development program, Head Start provides education, health, nutrition, and social services to children and their families through direct services or referrals. Nearly four decades of research establish that Head Start delivers the intended services and improves the lives and development of the children and families it…

Mastering Developmental Transitions in Young and Middle Adulthood: The Interplay of Openness to Experience and Traditional Gender Ideology on Women's Self-Efficacy and Subjective Well-Being

ERIC Educational Resources Information Center

Weiss, David; Freund, Alexandra M.; Wiese, Bettina S.

2012-01-01

The present research focuses on 2 factors that might help or hurt women to cope with the uncertainties associated with developmental transitions in modern societies (i.e., starting one's first job, graduating from high school, reentry to work after parental leave). We investigate (a) the role of openness to experience in coping with challenging…

Chemical Toxicity on HeLa Cells.

PubMed

Verma, Rajeshwar P; Hansch, Corwin

2006-01-01

HeLa cells were named for Henrietta Lacks, who died in 1952 from an infection of a special type of cancer. Margaret Gey, her physician, started working with these cancer cells that are still used for medical research. In the present review, an attempt has been made to collect the data for the effects of different chemicals on HeLa cells and to discuss them by the formulation of a total number of 22 QSAR.

[Standard Operating Procedures in Clinical Medicine].

PubMed

Miljak, Tomislav; Zaar, Peter

2017-09-01

Standard operating procedures (SOP) in hospital care have the potential to improve treatment quality and transparency. However, after arriving at the decision to generate a SOP for the own hospital or ward, the upcoming question is often, how to start?The present article tries to give some interdisciplinary guidance about reasonable structures and contents of SOPs that could be understood as a basic matrix for individual work. © Georg Thieme Verlag KG Stuttgart · New York.

Beam commission of the high intensity proton source developed at INFN-LNS for the European Spallation Source

NASA Astrophysics Data System (ADS)

Neri, L.; Celona, L.; Gammino, S.; Miraglia, A.; Leonardi, O.; Castro, G.; Torrisi, G.; Mascali, D.; Mazzaglia, M.; Allegra, L.; Amato, A.; Calabrese, G.; Caruso, A.; Chines, F.; Gallo, G.; Longhitano, A.; Manno, G.; Marletta, S.; Maugeri, A.; Passarello, S.; Pastore, G.; Seminara, A.; Spartà, A.; Vinciguerra, S.

2017-07-01

At the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS) the beam commissioning of the high intensity Proton Source for the European Spallation Source (PS-ESS) started in November 2016. Beam stability at high current intensity is one of the most important parameter for the first steps of the ongoing commissioning. Promising results were obtained since the first source start with a 6 mm diameter extraction hole. The increase of the extraction hole to 8 mm allowed improving PS-ESS performances and obtaining the values required by the ESS accelerator. In this work, extracted beam current characteristics together with Doppler shift and emittance measurements are presented, as well as the description of the next phases before the installation at ESS in Lund.

An Investigation of Applications for Thermodynamic Work Potential Methods: Working Tables and Charts for Estimation of Thermodynamic Work Potential in Equilibrium Mixtures of Jet-A and Air

NASA Technical Reports Server (NTRS)

Mavris, Dimitri; Roth, Bryce; McDonald, Rob

2002-01-01

The objective of this report is to provide a tool to facilitate the application of thermodynamic work potential methods to aircraft and engine analysis. This starts with a discussion of the theoretical background underlying these methods, which is then used to derive various equations useful for thermodynamic analysis of aircraft engines. The work potential analysis method is implemented in the form of a set of working charts and tables that can be used to graphically evaluate work potential stored in high-enthalpy gas. The range of validity for these tables is 300 to 36,000 R, pressures between between 0.01 atm and 100 atm, and fuel-air ratios from zero to stoichiometric. The derivations and charts assume mixtures of Jet-A and air as the working fluid. The thermodynamic properties presented in these charts were calculated based upon standard thermodynamic curve fits.

The intelligent OR: design and validation of a context-aware surgical working environment.

PubMed

Franke, Stefan; Rockstroh, Max; Hofer, Mathias; Neumuth, Thomas

2018-05-24

Interoperability of medical devices based on standards starts to establish in the operating room (OR). Devices share their data and control functionalities. Yet, the OR technology rarely implements cooperative, intelligent behavior, especially in terms of active cooperation with the OR team. Technical context-awareness will be an essential feature of the next generation of medical devices to address the increasing demands to clinicians in information seeking, decision making, and human-machine interaction in complex surgical working environments. The paper describes the technical validation of an intelligent surgical working environment for endoscopic ear-nose-throat surgery. We briefly summarize the design of our framework for context-aware system's behavior in integrated OR and present example realizations of novel assistance functionalities. In a study on patient phantoms, twenty-four procedures were implemented in the proposed intelligent surgical working environment based on recordings of real interventions. Subsequently, the whole processing pipeline for context-awareness from workflow recognition to the final system's behavior is analyzed. Rule-based behavior that considers multiple perspectives on the procedure can partially compensate recognition errors. A considerable robustness could be achieved with a reasonable quality of the recognition. Overall, reliable reactive as well as proactive behavior of the surgical working environment can be implemented in the proposed environment. The obtained validation results indicate the suitability of the overall approach. The setup is a reliable starting point for a subsequent evaluation of the proposed context-aware assistance. The major challenge for future work will be to implement the complex approach in a cross-vendor setting.

Manufacturing Technology for Shipbuilding

DTIC Science & Technology

1983-01-01

during which time there was an interface of Japanese and American shipbuilding concepts and methodology . Those two years of work resulted in many...lanes is of paramount importance in maintaining a smoothy orderly flow of pre-fabricated steel. Occasionally, the process lanes may fall behind schedule...design methodology . The earlier the start that Engineering has, the better the chance that all required engineering work will be completed at start of

[EEQ in clinical embryology: a starting program].

PubMed

Boyer, Pierre; Brugnon, Florence; Levy, Rachel; Pfeffer, Jérôme; Siest, Jean-Pascal

2014-01-01

Every laboratory including those working in assisted reproductive technologies have to be accredited EN ISO 15189 before 2020. This standardisation includes an external quality evaluation (EQE). In order to work out an EQE tool, we used images extracted from our own database developed during daily practice. We achieved an easily online tool called: "EEQ en embryologie clinique", developed on Biologie prospective web site with ART French biologists Association (Blefco) expertise in evaluation of early human embryonic stages. In 2013, 38 ART laboratories participate to the first program with more than 90% of appropriates results. The present article aims at describing this tool and discussing its limits.

A Model-Driven Approach for Telecommunications Network Services Definition

NASA Astrophysics Data System (ADS)

Chiprianov, Vanea; Kermarrec, Yvon; Alff, Patrick D.

Present day Telecommunications market imposes a short concept-to-market time for service providers. To reduce it, we propose a computer-aided, model-driven, service-specific tool, with support for collaborative work and for checking properties on models. We started by defining a prototype of the Meta-model (MM) of the service domain. Using this prototype, we defined a simple graphical modeling language specific for service designers. We are currently enlarging the MM of the domain using model transformations from Network Abstractions Layers (NALs). In the future, we will investigate approaches to ensure the support for collaborative work and for checking properties on models.

Patient-centred screening for primary immunodeficiency: a multi-stage diagnostic protocol designed for non-immunologists

PubMed Central

de Vries, E

2006-01-01

Efficient early identification of primary immunodeficiency disease (PID) is important for prognosis, but is not an easy task for non-immunologists. The Clinical Working Party of the European Society for Immunodeficiencies (ESID) has composed a multi-stage diagnostic protocol that is based on expert opinion, in order to increase the awareness of PID among doctors working in different fields. The protocol starts from the clinical presentation of the patient; immunological skills are not needed for its use. The multi-stage design allows cost-effective screening for PID within the large pool of potential cases in all hospitals in the early phases, while more expensive tests are reserved for definitive classification in collaboration with an immunologist at a later stage. Although many PIDs present in childhood, others may present at any age. The protocols presented here are therefore aimed at both adult physicians and paediatricians. While designed for use throughout Europe, there will be national differences which may make modification of this generic algorithm necessary. PMID:16879238

New Learning Method of a Lecture of ‘Machine Fabrication’ by Self-study with Investigation and Presentation Incorporated

NASA Astrophysics Data System (ADS)

Kasuga, Yukio

A new teaching method was developed in learning ‘machine fabrication’ for the undergraduate students. This consists of a few times of lectures, grouping, decision of industrial products which each group wants to investigate, investigation work by library books and internet, arrangement of data containing characteristics of the products, employed materials and processing methods, presentation, discussions and revision followed by another presentation. This new method is derived from one of the Finland‧s way of primary school education. Their way of education is believed to have boosted up to the top ranking in PISA tests by OECD. After starting the new way of learning, students have fresh impressions on this lesson, especially for self-study, the way of investigation, collaborate work and presentation. Also, after four years of implementation, some improvements have been made including less use of internet, and determination of products and fabricating methods in advance which should be investigated. By this, students‧ lecture assessment shows further encouraging results.

Eleven Tribes Jump START Clean Energy Projects, Summer 2012 (Newsletter)

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

Not Available

This newsletter describes key activities of the DOE Office of Indian Energy Policy and Programs for Summer 2012. The U.S. Department of Energy Office of Indian Energy Policy and Programs (DOE-IE) has selected 11 Tribes - five in Alaska and six in the contiguous United States - to receive on-the-ground technical support for community-based energy efficiency and renewable energy projects as part of DOE-IE's Strategic Technical Assistance Response Team (START) Program. START finalists were selected based on the clarity of their requests for technical assistance and the ability of START to successfully work with their projects or community. Technical expertsmore » from DOE and its National Renewable Energy Laboratory (NREL) will work directly with community-based project teams to analyze local energy issues and assist the Tribes in moving their projects forward. In Alaska, the effort will be bolstered by DOE-IE's partnership with the Denali Commission, which will provide additional assistance and expertise, as well as funding to fuel the Alaska START initiative.« less

Tracing a Route and Finding a Shortcut: The Working Memory, Motivational, and Personality Factors Involved.

PubMed

Pazzaglia, Francesca; Meneghetti, Chiara; Ronconi, Lucia

2018-01-01

Wayfinding (WF) is the ability to move around efficiently and find the way from a starting point to a destination. It is a component of spatial navigation, a coordinate and goal-directed movement of one's self through the environment. In the present study, the relationship between WF tasks (route tracing and shortcut finding) and individual factors were explored with the hypothesis that WF tasks would be predicted by different types of cognitive, affective, motivational variables, and personality factors. A group of 116 university students (88 F.) were conducted along a route in a virtual environment and then asked first to trace the same route again, and then to find a shortcut between the start and end points. Several instruments assessing visuospatial working memory, mental rotation ability, self-efficacy, spatial anxiety, positive attitude to exploring, and personality traits were administered. The results showed that a latent spatial ability factor (measured with the visuospatial working memory and mental rotations tests) - controlled for gender - predicted route-tracing performance, while self-report measures of anxiety, efficacy, and pleasure in exploring, and some personality traits were more likely to predict shortcut-finding performance. We concluded that both personality and cognitive abilities affect WF performance, but differently, depending on the requirements of the task.

One-loop topological expansion for spin glasses in the large connectivity limit

NASA Astrophysics Data System (ADS)

Chiara Angelini, Maria; Parisi, Giorgio; Ricci-Tersenghi, Federico

2018-01-01

We apply for the first time a new one-loop topological expansion around the Bethe solution to the spin-glass model with a field in the high connectivity limit, following the methodological scheme proposed in a recent work. The results are completely equivalent to the well-known ones, found by standard field-theoretical expansion around the fully connected model (Bray and Roberts 1980, and following works). However this method has the advantage that the starting point is the original Hamiltonian of the model, with no need to define an associated field theory, nor to know the initial values of the couplings, and the computations have a clear and simple physical meaning. Moreover this new method can also be applied in the case of zero temperature, when the Bethe model has a transition in field, contrary to the fully connected model that is always in the spin-glass phase. Sharing with finite-dimensional model the finite connectivity properties, the Bethe lattice is clearly a better starting point for an expansion with respect to the fully connected model. The present work is a first step towards the generalization of this new expansion to more difficult and interesting cases as the zero-temperature limit, where the expansion could lead to different results with respect to the standard one.

[Problems of Doctor Judym's peers].

PubMed

Kamiński, J

2000-01-01

This paper is a work on the health conditions of the inhabitants of Rzeszów and the surrounding area in the second half of the 19th century as based on the mortality analysis. A comparison and contrast has been made between the daily work of a doctor nowadays and a hundred years ago. The issues have been presented at various levels, with reference to the political, socio-economic and cultural relations existing at that time. The work is enhanced with additional comments on the doctor's profession and the problem of diagnostic difficulties as well as the possibility of making a mistaken judgement. Additionally, the definition of death at that time and at present has been formulated. The issues of colleague solidarity, ethical and moral issues and the activities of the Doctors' Association over the above mentioned period are also discussed. I noted the "plague" of the time which was the provision of medical treatment by the unqualified. The above considerations may be a starting point for the present, popular discussion on the principles of a doctor's ethics and duty.

Working through. A process of restitution.

PubMed

Gottesman, D M

A number of authors, including Freud, have written about the process of working through but have left unsettled what is actually involved. I have attempted to outline the step-by-step process of working through, starting with recollection and repetition and ending with restitution and resolution. I have introduced the term restitution in order to give more importance to an already existing step in the working-throught process; it should not be looked upon as an artificial device. Restitution allows the patient to find appropriate gratification in present reality, and this helps him to relinquish the past. Rather than allowing the patient to "wallow in the muck of guilt," as Eveoleen Rexford suggests society "wallows" in its inability to help its children, restitution gives appropriate direction for change. It is a natural step in the successful resolution of treatment.

Proceedings of the Eighteenth Annual Software Engineering Workshop

NASA Technical Reports Server (NTRS)

1993-01-01

The workshop provided a forum for software practitioners from around the world to exchange information on the measurement, use, and evaluation of software methods, models, and tools. This year, approximately 450 people attended the workshop, which consisted of six sessions on the following topics: the Software Engineering Laboratory, measurement, technology assessment, advanced concepts, process, and software engineering issues in NASA. Three presentations were given in each of the topic areas. The content of those presentations and the research papers detailing the work reported are included in these proceedings. The workshop concluded with a tutorial session on how to start an Experience Factory.

After APOD: From the Website to the Classroom and Beyond

NASA Astrophysics Data System (ADS)

Wilson, Teresa; APOD

2017-01-01

Astronomy Picture of the Day (APOD) images may start on the apod.nasa.gov website, but their reach goes much further than the individual sitting at their computer screen. They provoke questions that then prompts the reader to email the authors; teachers use the images in their classrooms; students use them in their projects. This presentation will take a look at some of the work done using APOD images and text, including public outreach via middle school presentations and email communications, and academic uses beyond astronomy such as lesson plans on atmospheric refraction and even plagiarism, copyright and fair use.

Sensorless Control of Permanent Magnet Machine for NASA Flywheel Technology Development

NASA Technical Reports Server (NTRS)

Kenny, Barbara H.; Kascak, Peter E.

2002-01-01

This paper describes the position sensorless algorithms presently used in the motor control for the NASA "in-house" development work of the flywheel energy storage system. At zero and low speeds a signal injection technique, the self-sensing method, is used to determine rotor position. At higher speeds, an open loop estimate of the back EMF of the machine is made to determine the rotor position. At start up, the rotor is set to a known position by commanding dc into one of the phase windings. Experimental results up to 52,000 rpm are presented.

Promoting Mental Health. Training Guides for the Head Start Learning Community.

ERIC Educational Resources Information Center

Bowman (James) Associates, San Francisco, CA.

This training guide is intended to help Head Start staff promote mental health for all members of the Head Start Community, by means of activities that build skills in creating responsive, respectful relationships with co-workers, parents, and children. The guide has five working sections, the first three of which are training modules. Each of the…

Teaching with Toys: Using Stuffed Animals as Teaching Tools in Head Start Classrooms.

ERIC Educational Resources Information Center

LeMasurier, Beth

1998-01-01

Stuffed animals provide comfort and security to children, and many Head Start teachers are putting this knowledge to work in the classroom. This article shows how to incorporate stuffed animals and puppets into the Head Start curriculum to help children deal with conflict resolution, separation anxiety, grief and loss, safety, and cultural…

Assessing and improving health in the workplace: an integration of subjective and objective measures with the STress Assessment and Research Toolkit (St.A.R.T.) method.

PubMed

Panari, Chiara; Guglielmi, Dina; Ricci, Aurora; Tabanelli, Maria Carla; Violante, Francesco Saverio

2012-09-20

The aim of this work was to introduce a new combined method of subjective and objective measures to assess psychosocial risk factors at work and improve workers' health and well-being. In the literature most of the research on work-related stress focuses on self-report measures and this work represents the first methodology capable of integrating different sources of data. An integrated method entitled St.A.R.T. (STress Assessment and Research Toolkit) was used in order to assess psychosocial risk factors and two health outcomes. In particular, a self-report questionnaire combined with an observational structured checklist was administered to 113 workers from an Italian retail company. The data showed a correlation between subjective data and the rating data of the observational checklist for the psychosocial risk factors related to work contexts such as customer relationship management and customer queue. Conversely, the factors related to work content (workload and boredom) measured with different methods (subjective vs. objective) showed a discrepancy. Furthermore, subjective measures of psychosocial risk factors were more predictive of workers' psychological health and exhaustion than rating data. The different objective measures played different roles, however, in terms of their influence on the two health outcomes considered. It is important to integrate self-related assessment of stressors with objective measures for a better understanding of workers' conditions in the workplace. The method presented could be considered a useful methodology for combining the two measures and differentiating the impact of different psychological risk factors related to work content and context on workers' health.

Assessing and improving health in the workplace: an integration of subjective and objective measures with the STress Assessment and Research Toolkit (St.A.R.T.) method

PubMed Central

2012-01-01

Background The aim of this work was to introduce a new combined method of subjective and objective measures to assess psychosocial risk factors at work and improve workers’ health and well-being. In the literature most of the research on work-related stress focuses on self-report measures and this work represents the first methodology capable of integrating different sources of data. Method An integrated method entitled St.A.R.T. (STress Assessment and Research Toolkit) was used in order to assess psychosocial risk factors and two health outcomes. In particular, a self-report questionnaire combined with an observational structured checklist was administered to 113 workers from an Italian retail company. Results The data showed a correlation between subjective data and the rating data of the observational checklist for the psychosocial risk factors related to work contexts such as customer relationship management and customer queue. Conversely, the factors related to work content (workload and boredom) measured with different methods (subjective vs. objective) showed a discrepancy. Furthermore, subjective measures of psychosocial risk factors were more predictive of workers’ psychological health and exhaustion than rating data. The different objective measures played different roles, however, in terms of their influence on the two health outcomes considered. Conclusions It is important to integrate self-related assessment of stressors with objective measures for a better understanding of workers’ conditions in the workplace. The method presented could be considered a useful methodology for combining the two measures and differentiating the impact of different psychological risk factors related to work content and context on workers’ health. PMID:22995286

Work, family socioeconomic status, and growth among working boys in Jordan.

PubMed

Hawamdeh, H; Spencer, N

2001-04-01

To describe the work, family socioeconomic characteristics, and growth of a representative sample of working children in Jordan. In a cross sectional survey of growth and health, 135 working children (aged 10-16 years) were studied in the areas of Irbid, Jarash, and North Jordan Valley. The children and their parents were interviewed and data collected on length of working week, income earned by the child, duration of work in years, age of starting work, type of work, child's smoking status, and family socioeconomic status. The mean age of the children was 13.3 years; 14.8% had started work before the age of 10 and 12.6% had been working for more than four years. Mean income was 34 Jordanian Dinars but 6.7% were unwaged; 34% were working more than 60 hours per week, and 85.9% more than 40 hours. Monthly income and working hours were positively correlated with the age of the child. There was no correlation between age and smoking status; 37.8% smoked more than five cigarettes per day. Mean height and weight z scores were -0.365 and -0.081 of the UK standard respectively. Packed cell volume was within the anaemic range in 34.1% of children. In Jordan many children start work at an early age and work long hours for little or no income. Stunting and anaemia are common and many are established smokers. Relevance of these findings for social policy and health care of working children in Jordan and elsewhere is discussed.

Mathematical models in simulation process in rehabilitation of persons with disabilities

NASA Astrophysics Data System (ADS)

Gorie, Nina; Dolga, Valer; Mondoc, Alina

2012-11-01

The problems of people with disability are varied. A disability may be physical, cognitive, mental, sensory, emotional, developmental or some combination of these. The major disabilities which can appear in people's lives are: the blindness, the deafness, the limb-girdle muscular dystrophy, the orthopedic impairment, the visual impairment. A disability is an umbrella term, covering impairments, activity limitations and participation restrictions. A disability may occur during a person's lifetime or may be present from birth. The authors conclude that some of these disabilities like physical, cognitive, mental, sensory, emotional, developmental can be rehabilitated. Starting from this state of affairs the authors present briefly the possibility of using certain mechatronic systems for rehabilitation of persons with different disabilities. The authors focus their presentation on alternative calling the Stewart platform in order to achieve the proposed goal. The authors present a mathematical model of systems theory approach under the parallel system and described its contents can. The authors analyze in a meaningful mathematical model describing the procedure of rehabilitation process. From the affected function biomechanics and taking into account medical recommendations the authors illustrate the mathematical models of rehabilitation work. The authors assemble a whole mathematical model of parallel structure and the rehabilitation process and making simulation and highlighting the results estimated. The authors present in the end work the results envisaged in the end analysis work, conclusions and steps for future work program..

Out of the classroom and into the community: medical students consolidate learning about health literacy through collaboration with Head Start.

PubMed

Milford, Emily; Morrison, Kristin; Teutsch, Carol; Nelson, Bergen B; Herman, Ariella; King, Mernell; Beucke, Nathan

2016-04-23

Medical schools need to teach future physicians about health literacy and patient-doctor communication, especially when working with vulnerable communities, but many fall short. In this article, we present a community-based, service learning experience over one academic year during the pre-clerkship portion of medical school as an innovative and successful model for medical students to learn about health literacy and practice effective communication strategies. "Eat Healthy, Stay Active!" (EHSA) is a 5-month pediatric obesity intervention designed for Head Start children, their parent (s), and staff. We hypothesized students' attitudes, knowledge, and skills confidence regarding healthy literacy and patient communication would improve from baseline after receiving training and serving as family mentors in the EHSA intervention. First- and second-year medical students were trained through a series of didactics and then partnered with Head Start children, parents, and staff to help educate and set goals with families during the EHSA intervention. Medical students were given a pre- and post-intervention survey designed to measure their attitudes, knowledge, and skills confidence regarding health literacy. The pre-survey was administered before the first didactic session and the post-survey was administered after the conclusion of the EHSA intervention. We compared students' pre- and post-intervention responses using paired t-tests. Throughout the project, the medical students were asked to complete a set of open-ended journal questions about their experiences. These responses were examined using qualitative, thematic analyses. Additionally, the Head Start parents and staff were asked to complete a survey about their experience working with the medical students. Participant (n=12) pre- and post-surveys revealed that medical students' attitudes about the importance of health literacy were ranked highly both pre- and post- intervention. However, knowledge and skills confidence regarding health literacy showed statistically significant improvement from baseline. Journal entries were categorized qualitatively to demonstrate medical students' insight about their growth and development throughout the project. Survey results from Head Start parents showed medical student participation to be highly valued. Providing medical students with a service learning opportunity to work with individuals with low health literacy in their pre-clerkship years increased students' knowledge and skills confidence regarding health literacy and communication.

Company Policies on Working Hours and Night Work in Relation to Older Workers' Work Ability and Work Engagement: Results From a Dutch Longitudinal Study with 2 Year Follow-Up.

PubMed

van der Meer, Laudry; Leijten, Fenna R M; Heuvel, Swenneke G; Ybema, Jan F; de Wind, Astrid; Burdorf, Alex; Geuskens, Goedele A

2016-06-01

Purpose To longitudinally investigate (1) whether lower work ability and work engagement predict the use of company policies on reduced working hours and exemption from evening/night work among older workers, and (2) whether using such policies subsequently contribute to higher work ability and work engagement. Methods In total 6922 employees (45-64 years) participating in the first three waves of the Study on Transitions in Employment, Ability and Motivation were included. Participants yearly filled out an online questionnaires. Regression analyses were applied to study the influence of baseline work ability and work engagement on the incident use of policies during the first year of follow-up, and the incident use of these policies on work ability and work engagement during the second year of follow-up. Results Employees with a higher work ability were less likely to start using the policy 'reduced working hours' [OR 0.91 (95 % CI 0.83-0.98)]. Starting to use this policy was in turn related to lower work ability 1 year later [B -0.28 (95 % CI -0.47 to -0.08)]. Starting to use the policy 'exemption from evening/night work' was related to higher work engagement 1 year later [B 0.23 (95 % CI 0.07-0.39)]. Conclusions Low work ability precedes the use of some company policies aiming to support sustainable employability of older workers. Further research is needed to explore whether company policies result in a (longstanding) improvement, or reduced deterioration, of older workers' employability.

Can We Talk through a Robot As if Face-to-Face? Long-Term Fieldwork Using Teleoperated Robot for Seniors with Alzheimer's Disease.

PubMed

Kuwamura, Kaiko; Nishio, Shuichi; Sato, Shinichi

2016-01-01

This work presents a case study on fieldwork in a group home for the elderly with dementia using a teleoperated robot called Telenoid. We compared Telenoid-mediated and face-to-face conditions with three residents with Alzheimer's disease (AD). The result indicates that two of the three residents with moderate AD showed a positive reaction to Telenoid. Both became less nervous while communicating with Telenoid from the time they were first introduced to it. Moreover, they started to use more body gestures in the face-to-face condition and more physical interactions in the Telenoid-mediated condition. In this work, we present all the results and discuss the possibilities of using Telenoid as a tool to provide opportunities for seniors to communicate over the long term.

Extended work availability and its relation with start-of-day mood and cortisol.

PubMed

Dettmers, Jan; Vahle-Hinz, Tim; Bamberg, Eva; Friedrich, Niklas; Keller, Monika

2016-01-01

The opportunity to work at any time and place, which is facilitated by mobile communication technologies, reinforces employer expectations that employees are available for work beyond regular work hours. This study investigates the relation of daily extended work availability with psychological and physiological well-being and the mediating role of recovery experiences. We hypothesized that recovery is limited under conditions of extended work availability, which may impair well-being. A sample of 132 individuals from 13 organizations provided daily survey measures over a period of 4 days during which they were required to be available during nonworking hours and 4 days during which they were not required to be available. A subsample of 51 persons provided morning cortisol levels in addition to the survey data. The analysis of within-person processes using multilevel structural equation modeling revealed significant effects of extended work availability on the daily start-of-day mood and cortisol awakening response. Mediation analysis revealed that the recovery experience of control over off-job activities mediated the observed relationship with start-of-day mood but not the relationship with the cortisol awakening response. The results demonstrate that nonwork hours during which employees are required to remain available for work cannot be considered leisure time because employees' control over their activities is constrained and their recovery from work is restricted. (c) 2016 APA, all rights reserved).

La enseñanza de la astrología en la Universidad de Salamanca (1460 - 1530).

NASA Astrophysics Data System (ADS)

García Castillo, P.

With the creation of the chair of Astrology at the University of Salamanca in 1460 starts an astrological development, which collects critically the classical and the medieval Arab and Jewish texts. Continuing the work of Alphons X it initiates the theoretical and practical development of astrology, which anticipates the Copernican revolution. The paper presents a general overview of the teachers of that chair and a summary of the most important texts.

Comments on theoretical foundation of "EM Drive"

NASA Astrophysics Data System (ADS)

Wu, C.-W.

2018-03-01

The concept of EM Drive has attracted much attention and groups of work have been conducted to prove or verify it, of which the published experimental outcome is criticized in great details while the theoretical foundation has not been discussed. The present essay investigates on the theoretical derivations of the net thrust in the "EM drive" and reveals the self-contradiction arising at the very start, when the law of conservation of momentum was utilized and opposed simultaneously.

Hamiltonian surface charges using external sources

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

Troessaert, Cédric, E-mail: troessaert@cecs.cl

2016-05-15

In this work, we interpret part of the boundary conditions as external sources in order to partially solve the integrability problem present in the computation of surface charges associated to gauge symmetries in the hamiltonian formalism. We start by describing the hamiltonian structure of external symmetries preserving the action up to a transformation of the external sources of the theory. We then extend these results to the computation of surface charges for field theories with non-trivial boundary conditions.

X-Ray Spectroscopic Laboratory Experiments In Support of the NASA X-Ray Astronomy Flight Program

NASA Technical Reports Server (NTRS)

Kahn, Steven M.; Savin, D. W.; Gu, M. F.; Beiersdorfer, P.; Liedahl, D. A.; Brown, G.; Utter, S.

1998-01-01

During the 1997 performance period, our work focused on the L-shell X-ray emission from highly charged iron ions in the 10-18 A region. Details of our accomplishments in 1997 are presented in the following. We start by describing the laboratory measurements made and their impact on the X-ray flight program and conclude by an overview of new instrumental capabilities developed for uses in the coming year.

Agency Innovation Mission with Dava Newman

NASA Image and Video Library

2016-11-01

Dr. Dava Newman, NASA's deputy administrator, speaks to employees at the Florida spaceport during the annual KickStart Innovation Expo. The event gives employees an opportunity to present proposals for new ideas and processes. A small amount of funding is awarded to those selected allowing individuals or teams to procure needed items to implement their projects. Kennedy employees are encouraged to look for ways to do their work better and to propose concepts for tackling future mission needs.

Agency Innovation Mission with Dava Newman

NASA Image and Video Library

2016-11-01

Kennedy Space Center Director Bob Cabana speaks to employees at the Florida spaceport during the annual KickStart Innovation Expo. The event gives employees an opportunity to present proposals for new ideas and processes. A small amount of funding is awarded to those selected allowing individuals or teams to procure needed items to implement their projects. Kennedy employees are encouraged to look for ways to do their work better and to propose concepts for tackling future mission needs.

Agency Innovation Mission with Dava Newman

NASA Image and Video Library

2016-11-01

Dr. Dava Newman, NASA's deputy administrator, speaks to employees at the Florida spaceport during the annual KickStart Innovation Expo The event gives employees an opportunity to present proposals for new ideas and processes. A small amount of funding is awarded to those selected allowing individuals or teams to procure needed items to implement their projects. Kennedy employees are encouraged to look for ways to do their work better and to propose concepts for tackling future mission needs.

Galileo perceptionist.

PubMed

Sinico, Michele

2012-01-01

The present paper focuses on Galileo's conception of perception. I take as my starting point the interpretation of the Galilean text by Piccolino and Wade (2008, Perception 37 1312-1340): Galileo's eye: a new vision of the senses in the work of Galileo Galilei. Three points are discussed: the criticism of naive realism, the theoretical role of perceptual laws, and the distinction between different qualities of experience. The conclusions support an alternative interpretation which underscores the crucial role of phenomenology of perception in Galileo's epistemology.

Combined PET/MR: The Real Work Has Just Started. Summary Report of the Third International Workshop on PET/MR Imaging; February 17-21, 2014, Tübingen, Germany.

PubMed

Bailey, D L; Antoch, G; Bartenstein, P; Barthel, H; Beer, A J; Bisdas, S; Bluemke, D A; Boellaard, R; Claussen, C D; Franzius, C; Hacker, M; Hricak, H; la Fougère, C; Gückel, B; Nekolla, S G; Pichler, B J; Purz, S; Quick, H H; Sabri, O; Sattler, B; Schäfer, J; Schmidt, H; van den Hoff, J; Voss, S; Weber, W; Wehrl, H F; Beyer, T

2015-06-01

This paper summarises the proceedings and discussions at the third annual workshop held in Tübingen, Germany, dedicated to the advancement of the technical, scientific and clinical applications of combined PET/MRI systems in humans. Two days of basic scientific and technical instructions with "hands-on" tutorials were followed by 3 days of invited presentations from active researchers in this and associated fields augmented by round-table discussions and dialogue boards with specific themes. These included the use of PET/MRI in paediatric oncology and in adult neurology, oncology and cardiology, the development of multi-parametric analyses, and efforts to standardise PET/MRI examinations to allow pooling of data for evaluating the technology. A poll taken on the final day demonstrated that over 50 % of those present felt that while PET/MRI technology underwent an inevitable slump after its much-anticipated initial launch, it was now entering a period of slow, progressive development, with new key applications emerging. In particular, researchers are focusing on exploiting the complementary nature of the physiological (PET) and biochemical (MRI/MRS) data within the morphological framework (MRI) that these devices can provide. Much of the discussion was summed up on the final day when one speaker commented on the state of PET/MRI: "the real work has just started".

Condensed Matter Physics in Colombia is in its forties

NASA Astrophysics Data System (ADS)

Camacho, Angela

2015-03-01

Physics in Colombia started to develop in the 70's as a research part of basic sciences with the acquisition, at that time, of large research equipments such as x-rays and EPR. Experimental work was soon supplemented by theoretical investigations, which led to the formation of research groups in condensed matter. In the early 80's existed such groups in five universities. In this report we present, after a short history of the main steps that guided the initial research subjects, the major areas already developed and the minor research groups that are in the stage of consolidation. Currently this type of work is done at least in 20 universities. We also show the actual numbers of researchers, publications, PhD students and laboratories discriminated in gender to complete an overview of Condensed Matter Physics in Colombia. Finally, we present a short review of the main theoretical issues that have been worked in the last decade focusing on low dimensional systems, their structural and optical properties

Formation of vortex pairs with hinged rigid flaps at the nozzle exit

NASA Astrophysics Data System (ADS)

Das, Prashant; Govardhan, Raghuraman; Arakeri, Jaywant

2013-11-01

Biological flows related to aquatic propulsion using pulsed jets, or flow through the valves in a human heart, have received considerable attention in the last two decades. Both these flows are associated with starting jets that occur through biological tissue/membranes that are flexible. Motivated by these flows, we explore in the present work, the effect of passive flexibility of the nozzle exit on vortex generation from a starting jet. The starting jet is generated using a two-dimensional piston cylinder mechanism, the cross-section of the cylinder being rectangular with large aspect ratio. The fluid is pushed out of this cylinder or channel using a computer controlled piston. We introduce flexibility at the channel exit by hinging rigid flaps, which are initially parallel to the channel. The hinge used is such that it provides negligible stiffness or damping, thus allowing for the maximum opening of the flaps due to fluid forces. Using this system, we study both the flap kinematics and the vorticity dynamics downstream of the channel exit. Visualizations show large flap motions as the piston starts and this dramatically changes the vorticity distribution downstream of the flaps, with the formation of up to three different kinds of vortex pairs. This idealized configuration opens new opportunities to look at the effect of flexibility in such biological flows.

Optimization of new magnetorheological fluid mount for vibration control of start/stop engine mode

NASA Astrophysics Data System (ADS)

Chung, Jye Ung; Phu, Do Xuan; Choi, Seung-Bok

2015-04-01

The technologies related to saving energy/or green vehicles are actively researched. In this tendency, the problem for reducing exhausted gas is in development with various ways. Those efforts are directly related to the operation of engine which emits exhausted gas. The auto start/stop of vehicle engine when a vehicle stop at road is currently as a main stream of vehicle industry resulting in reducing exhausted gas. However, this technology automatically turns on and off engine frequently. This motion induces vehicle engine to transmit vibration of engine which has large displacement, and torsional impact to chassis. These vibrations causing uncomfortable feeling to passengers are transmitted through the steering wheel and the gear knob. In this work, in order to resolve this vibration issue, a new proposed magnetorheological (MR) fluid based engine mount (MR mount in short) is presented. The proposed MR mount is designed to satisfy large damping force in various frequency ranges. It is shown that the proposed mount can have large damping force and large force ratio which is enough to control unwanted vibrations of engine start/stop mode.

Strategies for merging microbial fuel cell technologies in water desalination processes: Start-up protocol and desalination efficiency assessment

NASA Astrophysics Data System (ADS)

Borjas, Zulema; Esteve-Núñez, Abraham; Ortiz, Juan Manuel

2017-07-01

Microbial Desalination Cells constitute an innovative technology where microbial fuel cell and electrodialysis merge in the same device for obtaining fresh water from saline water with no energy-associated cost for the user. In this work, an anodic biofilm of the electroactive bacteria Geobacter sulfurreducens was able to efficiently convert the acetate present in synthetic waste water into electric current (j = 0.32 mA cm-2) able to desalinate water. .Moreover, we implemented an efficient start-up protocol where desalination up to 90% occurred in a desalination cycle (water production:0.308 L m-2 h-1, initial salinity: 9 mS cm-1, final salinity: <1 mS cm-1) using a filter press-based MDC prototype without any energy supply (excluding peristaltic pump energy). This start-up protocol is not only optimized for time but also simplifies operational procedures making it a more feasible strategy for future scaling-up of MDCs either as a single process or as a pre-treatment method combined with other well established desalination technologies such as reverse osmosis (RO) or reverse electrodialysis.

Dispersion, spatial growth rate, and start current of a Cherenkov free-electron laser with negative-index material

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

Wang, Yuanyuan; Wei, Yanyu; Jiang, Xuebing

We present an analysis of a Cherenkov free-electron laser based on a single slab made from negative-index materials. In this system, a flat electron beam with finite thickness travelling close to the surface of the slab interacts with the copropagating electromagnetic surface mode. The dispersion equation for a finitely thick slab is worked out and solved numerically to study the dispersion relation of surface modes supported by negative-index materials, and the calculations are in good agreement with the simulation results from a finite difference time domain code. We find that under suitable conditions there is inherent feedback in such amore » scheme due to the characteristics of negative-index materials, which means that the system can oscillate without external reflectors when the beam current exceeds a threshold value, i.e., start current. Using the hydrodynamic approach, we setup coupled equations for this system, and solve these equations analytically in the small signal regime to obtain formulas for the spatial growth rate and start current.« less

A Bridge to a Smart Start: A Case Study of Northampton Community College's Summer Bridge Program

ERIC Educational Resources Information Center

Sparrow, Michael J.

2017-01-01

This study sought to understand how and why Northampton Community College's Summer Bridge program--The Smart Start program--is highly successful at helping "at-risk" students transition to college-level work. For ten years, the Smart Start program has helped more than 150 incoming students acclimate to college, persist, and graduate…

Middle Start Schools Striving for Excellence: Steadily Improving High-Poverty Schools in the Mid South Delta

ERIC Educational Resources Information Center

Rose, Lea Williams

2006-01-01

As part of a national Middle Start initiative led by the Academy for Educational Development (AED), Mid South Middle Start is committed to working with high-poverty schools in the Mid South Delta region to build their capacity to foster students' academic excellence, support the development of young adolescents, and achieve social equity in…

"¿Tu te Acuerdas de Ganchulinas?": Longitudinal Research with Young Emergent Bilinguals

ERIC Educational Resources Information Center

Axelrod, Ysaaca

2014-01-01

Drawing on the work of Celia Genishi, this article discusses data from an ethnographic case study of young Latina/o children, starting in their four-year-olds classroom in a Head Start Program through their first grade year in a dual-language program in a public school. The children attended a bilingual Head Start program that followed a…

How Much of a "Running Start" Do Dual Enrollment Programs Provide Students? CEDR Working Paper. WP #2014-­7

ERIC Educational Resources Information Center

Cowan, James; Goldhaber, Dan

2014-01-01

We study a popular dual enrollment program in Washington State, "Running Start" using a new administrative database that links high school and postsecondary data. Conditional on prior high school performance, we find that students participating in Running Start are more likely to attend any college but less likely to attend four-year…

Inputs in the Production of Early Childhood Human Capital: Evidence from Head Start. NBER Working Paper No. 20639

ERIC Educational Resources Information Center

Walters, Christopher

2014-01-01

Studies of small-scale "model" early-childhood programs show that high-quality preschool can have transformative effects on human capital and economic outcomes. Evidence on the Head Start program is more mixed. Inputs and practices vary widely across Head Start centers, however, and little is known about variation in effectiveness within…

Supersonics--Airport Noise

NASA Technical Reports Server (NTRS)

Bridges, James

2007-01-01

At this, the first year-end meeting of the Fundamental Aeronautics Program, an overview of the Airport Noise discipline of the Supersonics Project leads the presentation of technical plans and achievements in this area of the Project. The overview starts by defining the Technical Challenges targeted by Airport Noise efforts, and the Approaches planned to meet these challenges. These are fleshed out in Elements, namely Prediction, Diagnostics, and Engineering, and broken down into Tasks. The Tasks level is where individual researchers' work is defined and from whence the technical presentations to follow this presentation come. This overview also presents the Milestones accomplished to date and to be completed in the next year. Finally, the NASA Research Announcement cooperative agreement activities are covered and tied to the Tasks and Milestones.

Design aspects of harmonic drive gear and performance improvement of its by problems identification: A review

NASA Astrophysics Data System (ADS)

Routh, Bikash

2018-04-01

The present paper aims at review on different aspects of harmonic drive gear to identify literature gap for future research. The present article is started first making the comparative study of harmonic drive gear over conventional gear, highlighting its historical background, its application, limitation etc. and then describing working principle of each and every components of it with detail dimensioning and modelling. The present article is further extended to study the different design aspects i.e. synthesis of tooth profiles, lubrication, stress, strain, torque, load sharing, kinematics error and vibration in details etc., identifying problems and then suggesting future perspective for the performance improvement of harmonic drive gear.

Intelligent Engine Systems Work Element 1.3: Sub System Health Management

NASA Technical Reports Server (NTRS)

Ashby, Malcolm; Simpson, Jeffrey; Singh, Anant; Ferguson, Emily; Frontera, mark

2005-01-01

The objectives of this program were to develop health monitoring systems and physics-based fault detection models for engine sub-systems including the start, lubrication, and fuel. These models will ultimately be used to provide more effective sub-system fault identification and isolation to reduce engine maintenance costs and engine down-time. Additionally, the bearing sub-system health is addressed in this program through identification of sensing requirements, a review of available technologies and a demonstration of a demonstration of a conceptual monitoring system for a differential roller bearing. This report is divided into four sections; one for each of the subtasks. The start system subtask is documented in section 2.0, the oil system is covered in section 3.0, bearing in section 4.0, and the fuel system is presented in section 5.0.

45 CFR 1311.2 - Definitions.

Code of Federal Regulations, 2013 CFR

2013-10-01

... individuals working in the field of child development and family services. ... Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND FAMILIES, HEAD START PROGRAM HEAD START...

45 CFR 1311.2 - Definitions.

Code of Federal Regulations, 2014 CFR

2014-10-01

... individuals working in the field of child development and family services. ... Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND FAMILIES, HEAD START PROGRAM HEAD START...

45 CFR 1311.2 - Definitions.

Code of Federal Regulations, 2012 CFR

2012-10-01

... individuals working in the field of child development and family services. ... Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND FAMILIES, HEAD START PROGRAM HEAD START...

45 CFR 1311.2 - Definitions.

Code of Federal Regulations, 2011 CFR

2011-10-01

... Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND FAMILIES, HEAD START PROGRAM HEAD START... individuals working in the field of child development and family services. ...

45 CFR 1311.2 - Definitions.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND FAMILIES, HEAD START PROGRAM HEAD START... individuals working in the field of child development and family services. ...

Where to start? Bottom-up attention improves working memory by determining encoding order.

PubMed

Ravizza, Susan M; Uitvlugt, Mitchell G; Hazeltine, Eliot

2016-12-01

The present study aimed to characterize the mechanism by which working memory is enhanced for items that capture attention because of their novelty or saliency-that is, via bottom-up attention. The first experiment replicated previous research by corroborating that bottom-up attention directed to an item is sufficient for enhancing working memory and, moreover, generalized the effect to the domain of verbal working memory. The subsequent 3 experiments sought to determine how bottom-up attention affects working memory. We considered 2 hypotheses: (1) Bottom-up attention enhances the encoded representation of the stimulus, similar to how voluntary attention functions, or (2) It affects the order of encoding by shifting priority onto the attended stimulus. By manipulating how stimuli were presented (simultaneous/sequential display) and whether the cue predicted the tested items, we found evidence that bottom-up attention improves working memory performance via the order of encoding hypothesis. This finding was observed across change detection and free recall paradigms. In contrast, voluntary attention improved working memory regardless of encoding order and showed greater effects on working memory. We conclude that when multiple information sources compete, bottom-up attention prioritizes the location at which encoding should begin. When encoding order is set, bottom-up attention has little or no benefit to working memory. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

Evaluation of Occupational Exposure of Glazers of a Ceramic Industry to Cobalt Blue Dye

PubMed Central

KARGAR, Fatemeh; SHAHTAHERI, Seyed Jamaleddin; GOLBABAEI, Farideh; BARKHORDARI, Abolfazl; RAHIMI-FROUSHANI, Abbas; KHADEM, Monireh

2013-01-01

Background: Cobalt is one of the most important constituent present in ceramic industries. Glazers are the relevant workers when they are producing blue colored ceramic, causing occupational exposure to such metal. Through this study, urinary cobalt was determined in glazers in a ceramic industry when they were producing blue-colored ceramic glazes. Methods: In this case-control study, spot urine samples were collected from 49 glazers at the start and end of work shifts (totally 98 samples) in 2011. Control group were well matched for age, height, and weight. A solid phase extraction system was used for separation and preconcentration of samples followed by analysis by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). All participants filled out a self administered questionnaire comprises questions about duration of exposure, work shift, use of mask, skin dermatitis, kind of job, ventilation system, overtime work, age, weight, and height. The lung function tests were performed on each control and cobalt exposed subjects. Analysis of covariance (ANCOVA) was used to evaluate the obtained results. Results: Urinary levels of cobalt were significantly higher in the glazers compared to the control group. There were significant differences at urinary concentration of cobalt at the start and end of the work shift in glazers. Spirometric parameters were significantly lower in the glazers compared to the control group. Among the variables used in questionnaire the significant variables were dermatitis skin, mask, ventilation, and overtime work. Conclusion: This study verified existence of cobalt in the urine glazers, showing lower amount than the ACGIH standard. PMID:26056641

Design and start-up of Gary Works' pulverized coal injection facilities

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

O'Donnell, E.M.; Cloran, L.M.; Oshnock, T.W.

1993-07-01

A pulverized coal injection system began operation at the Gary works' blast furnaces on Feb. 1, 1993. This system is capable of processing more than 3500 tons of coal/day to eventually supply the furnaces at a 400 lb/NTHM rate. The start-up was aggressive with coal levels exceeding 200 lb/NTHM within two to five weeks on the furnaces. Current rates are in the 250 to 290 lb/NTHM range.

AGOR 28: SIO Shipyard Representative Bi-Weekly Progress Report

DTIC Science & Technology

2015-08-10

government and SIO were started. Marine Outfitting has started working on a schedule. • Acoustic Tiles & MLV – Yard continues to apply Delta DT...direct the sound away from the main deck working area. NCE will be here to recheck the level during the underway portion of the PSTP next week on...ABS Correspondence - Self-Extinguishing Insulation )(R/ASR) 116/2 AGOR27 A024 STD Report - REGULATORY BODY CORRESPONDENCE ( DCI/USCG - ACCU, QFA

Climatology of the scintillation onset over southern Brazil

NASA Astrophysics Data System (ADS)

Sousasantos, Jonas; de Oliveira Moraes, Alison; Sobral, José H. A.; Muella, Marcio T. A. H.; de Paula, Eurico R.; Paolini, Rafael S.

2018-04-01

This work presents an analysis of the climatology of the onset time of ionospheric scintillations at low latitude over the southern Brazilian territory near the peak of the equatorial ionization anomaly (EIA). Data from L1 frequency GPS receiver located in Cachoeira Paulista (22.4° S, 45.0° W; dip latitude 16.9° S), from September 1998 to November 2014, covering a period between solar cycles 23 and 24, were used in the present analysis of the scintillation onset time. The results show that the start time of the ionospheric scintillation follows a pattern, starting about 40 min earlier, in the months of November and December, when compared to January and February. The analyses presented here show that such temporal behavior seems to be associated with the ionospheric prereversal vertical drift (PRVD) magnitude and time. The influence of solar activity in the percentage of GPS links affected is also addressed together with the respective ionospheric prereversal vertical drift behavior. Based on this climatological study a set of empirical equations is proposed to be used for a GNSS alert about the scintillation prediction. The identification of this kind of pattern may support GNSS applications for aviation and oil extraction maritime stations positioning.

The effect of interruptions during training on the time to the first trial and race start in Thoroughbred racehorses.

PubMed

Bolwell, C F; Rogers, C W; French, N P; Firth, E C

2013-02-01

Few studies have investigated the effect of having interruptions during training on future training and racing performance in Thoroughbred racehorses. The aim of this paper was to investigate the effect of having an interruption before the first trial on starting in a trial or a race. A prospective cohort study was used to record the training activity of a cohort of Thoroughbred racehorses, over two racing seasons. Fourteen racehorse trainers recorded information on the distances worked at canter and at fast speeds (<15s/200 m) and provided reasons for horses not training, or for having interruptions (break from training). Trial and racing results were obtained from the New Zealand Thoroughbred Racing online database. A Cox proportional hazards regression model was used to investigate two outcome measures of performance: (1) time to the first trial and (2) time to the first race. The type of interruption that had occurred before the first trial was the main exposure of interest, and was grouped into: no interruption, voluntary (no known condition or disease present) and involuntary interruptions (due to the presence of a condition or disease). A total of 160/200 (80%) horses started in at least one trial and 100/205 (48%) horses started in at least one race during the study period. The median time to starting in a trial or a race differed significantly (p<0.001) with the type of interruption. The hazard of starting in a trial was lower for horses experiencing voluntary and involuntary interruptions (p<0.001) but there was no association with starting in a race, after adjusting for confounding variables. As age at the start of training increased the hazard of starting in a trial decreased. Horses accumulating longer distances at 15s/200 m had a higher hazard of starting in a trial, whilst horses accumulating fewer events at high speed and fewer trials had a reduced hazard of starting in a race. There was significant clustering at the trainer level for both the outcomes investigated. Interruptions to training had an effect on the time to, and hazard of, a trial but not a race start. The timing of these interruptions may have implications for future racing success and career longevity. Copyright © 2012 Elsevier B.V. All rights reserved.

The Right Start for America's Newborns: A Decade of City and State Trends (1990-1999). Child Trends/KIDS COUNT Working Paper.

ERIC Educational Resources Information Center

Wertheimer, Richard; O'Hare, William; Croan, Tara; Jager, Justin; Long, Melissa; Reynolds, Megan

This paper traces the history of "The Right Start," discussing differences between the 50 largest cities and the nation overall and differences among states. It highlights eight measures reflecting a healthy start: teen births, repeat teen births, births to unmarried women, births to mothers with low educational attainment, late or no pregnancy…

Position-dependent radiative transfer as a tool for studying Anderson localization: Delay time, time-reversal and coherent backscattering

NASA Astrophysics Data System (ADS)

van Tiggelen, B. A.; Skipetrov, S. E.; Page, J. H.

2017-05-01

Previous work has established that the localized regime of wave transport in open media is characterized by a position-dependent diffusion coefficient. In this work we study how the concept of position-dependent diffusion affects the delay time, the transverse confinement, the coherent backscattering, and the time reversal of waves. Definitions of energy transport velocity of localized waves are proposed. We start with a phenomenological model of radiative transfer and then present a novel perturbational approach based on the self-consistent theory of localization. The latter allows us to obtain results relevant for realistic experiments in disordered quasi-1D wave guides and 3D slabs.

[GEITDAH consensus on conduct disorders in children and adolescents].

PubMed

Sasot-Llevadot, Jordi; Ibáñez-Bordas, Rosa M; Soto-López, Antonio; Montañés-Rada, Francisco; Gastaminza-Pérez, Xavier; Alda-Díez, José A; Cantó-Díez, Tomás; Catalá, Miguel A; Ferrin-Erdozáin, Maite; García-Giral, Marta; Graell-Bernal, Montserrat; Granada-Jiménez, Olvido; Herreros-Rodríguez, Óscar; Mardomingo-Sanz, María J; Mojarro-Práxedes, Dolores; Morey-Canyelles, Jaume; Ortiz-Guerra, Juan; Pàmies-Massana, Montserrat; Rey-Sánchez, Francisco; Romera-Torrens, María; Rubio-Morell, Belén; Ruiz-Lázaro, Pedro M; Ruiz-Sanz, Francisco

2015-08-16

In this paper, the Special Interest Group on Attention Deficit Hyperactivity Disorder (GEITDAH, from its name in Spanish) presents a consensus reached by experts from all over Spain on conduct disorders in children and adolescents. Following the initial work by the team at the Pedopsychiatry Unit at the Quiron-Teknon Hospital in Barcelona, agreements have been reached on a number of basic aspects that could be the starting point for future consensuses. A top priority aim of the work was also to update the criteria in the Diagnostic and statistical manual of mental disorders, fifth edition, for conduct disorders in children and adolescents, together with their comorbidity with attention deficit hyperactivity disorder.

[The changes of physiological reactivity of cardiorespiratory system to respiratory homeostasis with the use of complex stimulation of special work capacity].

PubMed

Lysenko, O M

2012-01-01

We present the influence of the program of special additional stimulation of work capacity of high-performance athletes on the sensitivity of cardiorespiratory system to hypercapnic and hypoxic shifts in respiratory homeostasis. We found that under the influence of the pre-start complex a decrease in the sensitivity of ventilator responses to CO2-H+ stimuli in combination with a reduction in the thresholds of the reaction take place. This creates conditions for increased mobilization properties of the cardiorespiratory system and economization of its reaction under conditions of changes of respiratory homeostasis characteristic of intense training and competitive loads in the sport.

CUTE: A Concolic Unit Testing Engine for C

DTIC Science & Technology

2005-01-01

We also introduce program units of a simple C-like language (cf. [20]). We present how CUTE instruments programs and performs concolic execution. We...works for a simple C-like language shown in Figure 2. START represents the first statement of a program under test. Each statement has an optional...is a variable, c is a constant p ::= v = v | v 6= v | v < v | v ≤ v | v ≥ v | v > v Figure 2: Syntax of a simple C-like language the inputs at the

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

OWEN,STEVEN J.

A method for decomposing a volume with a prescribed quadrilateral surface mesh, into a hexahedral-dominated mesh is proposed. With this method, known as Hex-Morphing (H-Morph), an initial tetrahedral mesh is provided. Tetrahedral are transformed and combined starting from the boundary and working towards the interior of the volume. The quadrilateral faces of the hexahedra are treated as internal surfaces, which can be recovered using constrained triangulation techniques. Implementation details of the edge and face recovery process are included. Examples and performance of the H-Morph algorithm are also presented.

Concurrency Control for Resilient Nested Transactions.

DTIC Science & Technology

1983-02-01

coveed in the rpoend we sufficienty-ecfic and precise to be used as index entries for cataloging. conforming to standard terminology. The DoD " Theseus ...cLrrent paper as a starting point for the work in his Master’s thesis ; in the process of writing his thesis , he discovered several major ways of...clarifying the ideas of this paper. Many of the ideas Gene Stark is developing for his thesis have found their way into the present paper. Mike Fischer

Stress studies in EFG

NASA Technical Reports Server (NTRS)

1983-01-01

A computer code which can account for plastic deformation effects on stress generated in silicon sheet grown at high speeds is fully operative. Stress and strain rate distributions are presented for two different sheet temperature profiles. The calculations show that residual stress levels are very sensitive to details of the cooling profile in a sheet with creep. Experimental work has been started in several areas to improve understanding of ribbon temperature profiles and stress distributions associated with a 10 cm wide ribbon cartridge system.

Painful orgasm in an adolescent after seminal-sparing cystoprostatectomy: a puzzling symptom.

PubMed

Angelini, Lorenzo; Castagnetti, Marco; Rigamonti, Waifro

2015-01-01

An 18-year-old boy, followed up after seminal-sparing cystectomy for bladder rhabdomyosarcoma, presented complaining of recurrent episodes of left scrotal/inguinal pain arising after orgasms. Full work-up ruled out disease recurrence, but showed enlarged seminal vesicles. Ligation of the vas deferens was unsuccessful. The patient was started on α-blockers to reduce vas contractions with improvement of symptoms. The possible pathophysiology and treatments of this symptom are discussed. 2014 S. Karger AG, Basel

Attitudes toward the unconscious.

PubMed

Beebe, J

1997-01-01

As a keynote to a conference bringing together psychoanalysts and analytical psychologists, this paper addresses different mythic attitudes toward the unconscious, starting with the caricatures of Oedipus and Narcissus that the author feels Jung and Freud originally projected onto each other in the course of their quarrel. He moves on to the fairytale-like stories of Perseus and Beauty and the Beast to discover more complex images of the stance taken in relation to the unconscious by present-day analysts working within both the Jungian and the Freudian traditions.

LUVOIR Tech Notes

NASA Technical Reports Server (NTRS)

Bolcar, Matthew R.; Shaklan, Stuart; Roberge, Aki; Rioux, Norman; Feinberg, Lee; Werner, Michael; Rauscher, Bernard; Mandell, Avi; France, Kevin; Schiminovich, David

2016-01-01

We present nine "tech notes" prepared by the Large UV/Optical/Infrared (LUVOIR) Science and Technology Definition Team (STDT), Study Office, and Technology Working Group. These tech notes are intended to highlight technical challenges that represent boundaries in the trade space for developing the LUVOIR architecture that may impact the science objectives being developed by the STDT. These tech notes are intended to be high-level discussions of the technical challenges and will serve as starting points for more in-depth analysis as the LUVOIR study progresses.

Earth Science Applications Showcase

NASA Image and Video Library

2014-08-05

Michael Gao presents his project on Southeast Asian disasters during the annual DEVELOP Earth Science Application Showcase at NASA headquarters Tuesday, August 5, 2014. The Earth Science Applications Showcase highlights the work of over 150 participants in the 10-week DEVELOP program that started in June. The DEVELOP Program bridges the gap between NASA Earth science and society, building capacity in both its participants and partner organizations, to better prepare them to handle the challenges that face our society and future generations. Photo Credit: (NASA/Aubrey Gemignani)

Simulation of Inviscid Compressible Multi-Phase Flow with Condensation

NASA Technical Reports Server (NTRS)

Kelleners, Philip

2003-01-01

Condensation of vapours in rapid expansions of compressible gases is investigated. In the case of high temperature gradients the condensation will start at conditions well away from thermodynamic equilibrium of the fluid. In those cases homogeneous condensation is dominant over heterogeneous condensation. The present work is concerned with development of a simulation tool for computation of high speed compressible flows with homogeneous condensation. The resulting ow solver should preferably be accurate and robust to be used for simulation of industrial flows in general geometries.

Determining tumor blood flow parameters from dynamic image measurements

NASA Astrophysics Data System (ADS)

Libertini, Jessica M.

2008-11-01

Many recent cancer treatments focus on preventing angiogenesis, the process by which a tumor promotes the growth of large and efficient capillary beds for the increased nourishment required to support the tumor's rapid growth[l]. To measure the efficacy of these treatments in a timely fashion, there is an interest in using data from dynamic sequences of contrast-enhanced medical imaging, such as MRI and CT, to measure blood flow parameters such as perfusion, permeability-surface-area product, and the relative volumes of the plasma and extracellular-extravascular space. Starting with a two compartment model presented by the radiology community[2], this work challenges the application of a simplification to this problem, which was originally developed to model capillary reuptake[3]. While the primary result of this work is the demonstration of the inaccuracy of this simplification, the remainder of the paper is dedicated to presenting alternative methods for calculating the perfusion and plasma volume coefficients. These methods are applied to model data sets based on real patient data, and preliminary results are presented.

From Dissertation Defense to Dissemination: Jump Start Your Academic Career With a Scholar Mentor Group.

PubMed

Lehna, Carlee; Hermanns, Melinda; Monsivais, Diane B; Engebretson, Joan

2016-01-01

The dissertation provides an excellent source of scholarly productivity for new doctoral faculty, yet is often neglected because of the demands inherent in the faculty role. The purpose of this paper is to present a case study of a scholar mentor group composed of three graduates of a PhD nursing program and their shared dissertation chair, who acted as a senior scholar mentor to the group. By working together, we have been able to enhance our scholarly productivity by disseminating our dissertations through presentations and publications. The paper will present the evolving process of this working group, summarize outcomes, analyze the challenges, and provide suggestions for future doctoral students and faculty who are working with them. Our experience and scholar mentor model captures the best of both worlds-the benefits of interaction with academic peers and the benefits of having a senior scholar mentor. This was accomplished while all members were at different schools in different cities and states. Although other literatures that document successful collaborations using a peer-mentorship model are available, we were unable to locate any that documents a post-doctoral group with a senior scholar mentor who continued working together after graduation. © 2015 Wiley Periodicals, Inc.

Non-Commutative Rational Yang-Baxter Maps

NASA Astrophysics Data System (ADS)

Doliwa, Adam

2014-03-01

Starting from multidimensional consistency of non-commutative lattice-modified Gel'fand-Dikii systems, we present the corresponding solutions of the functional (set-theoretic) Yang-Baxter equation, which are non-commutative versions of the maps arising from geometric crystals. Our approach works under additional condition of centrality of certain products of non-commuting variables. Then we apply such a restriction on the level of the Gel'fand-Dikii systems what allows to obtain non-autonomous (but with central non-autonomous factors) versions of the equations. In particular, we recover known non-commutative version of Hirota's lattice sine-Gordon equation, and we present an integrable non-commutative and non-autonomous lattice modified Boussinesq equation.

[Sinonasal fungal infections are not exclusively due to mucorales and Aspergillus!].

PubMed

Tauziède-Espariat, Arnault; Wassef, Michel; Adle-Biassette, Homa; Alanio, Alexandre; Bretagne, Stéphane; Lanternier, Fanny; Boui, Mohammed; Bouchaud, Olivier; Vironneau, Pierre; Kania, Romain; Jouvion, Grégory; Chrétien, Fabrice; Classe, Marion

2016-08-01

Rhino-sinusal infections are serious diseases and possibly lethal. When they are invasive, we easily discuss apergilloses and mucormycoses. The confirmation of the diagnosis of mucormycosis need an extensive surgery for precise histopathological and mycological evaluation. The pathologist may be faced to other rare mycoses such as phaeohyphomycoses, which present different morphological features than mucormycoses and Aspergillus. Once the diagnosis is established, an appropriate antifungal treatment is quickly started. The aim of our work is to report two observations of phaeohyphomycoses, to describe their histopathological features, to discuss complementary diagnostic methods and to present the main differential diagnoses. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

Theoretical Problems in High Resolution Solar Physics, 2

NASA Technical Reports Server (NTRS)

Athay, G. (Editor); Spicer, D. S. (Editor)

1987-01-01

The Science Working Group for the High Resolution Solar Observatory (HRSO) laid plans beginning in 1984 for a series of workshops designed to stimulate a broadbased input from the scientific community to the HRSO mission. These workshops have the dual objectives of encouraging an early start on the difficult theoretical problems in radiative transfer, magnetohydrodynamics, and plasma physics that will be posed by the HRSO data, and maintaining current discussions of results in high resolution solar studies. This workshop was the second in the series. The workshop format presented invited review papers during the formal sessions and contributed poster papers for discussions during open periods. Both are presented.

In the Field Feasibility of a Simple Method to Check for Radioactivity in Commodities and in the Environment

PubMed Central

Alessandri, Stefano

2017-01-01

Introduction: Some release of radionuclides into the environment can be expected from the growing number of nuclear plants, either in or out of service. The citizen and the big organization could be both interested in simple and innovative methods for checking the radiological safety of their environment and of commodities, starting from foods. Methods: In this work three methods to detect radioactivity are briefly compared  focusing on the most recent, which converts a smartphone into a radiation counter. Results: The results of a simple sensitivity test are presented showing the measure of the activity of reference sources put at different distances from each sensor. Discussion: The three methods are discussed in terms of availability, technology, sensitivity, resolution and usefulness. The reported results can be usefully transferred into a radiological emergency scenario and they also offer some interesting implication for our current everyday life, but show that the hardware of the tested smart-phone can detect only high levels of radioactivity. However the technology could be interesting to build a working detection and measurement chain which could start from a diffused and networked first screening before the final high resolution analysis. PMID:28744409

Programmable chemical reaction networks: emulating regulatory functions in living cells using a bottom-up approach.

PubMed

van Roekel, Hendrik W H; Rosier, Bas J H M; Meijer, Lenny H H; Hilbers, Peter A J; Markvoort, Albert J; Huck, Wilhelm T S; de Greef, Tom F A

2015-11-07

Living cells are able to produce a wide variety of biological responses when subjected to biochemical stimuli. It has become apparent that these biological responses are regulated by complex chemical reaction networks (CRNs). Unravelling the function of these circuits is a key topic of both systems biology and synthetic biology. Recent progress at the interface of chemistry and biology together with the realisation that current experimental tools are insufficient to quantitatively understand the molecular logic of pathways inside living cells has triggered renewed interest in the bottom-up development of CRNs. This builds upon earlier work of physical chemists who extensively studied inorganic CRNs and showed how a system of chemical reactions can give rise to complex spatiotemporal responses such as oscillations and pattern formation. Using purified biochemical components, in vitro synthetic biologists have started to engineer simplified model systems with the goal of mimicking biological responses of intracellular circuits. Emulation and reconstruction of system-level properties of intracellular networks using simplified circuits are able to reveal key design principles and molecular programs that underlie the biological function of interest. In this Tutorial Review, we present an accessible overview of this emerging field starting with key studies on inorganic CRNs followed by a discussion of recent work involving purified biochemical components. Finally, we review recent work showing the versatility of programmable biochemical reaction networks (BRNs) in analytical and diagnostic applications.

The 15 cm diameter ion thruster research

NASA Technical Reports Server (NTRS)

Wilbur, P. J.

1974-01-01

The startup reliability of a 15 cm diameter mercury bombardment ion thruster which employs a pulsed high voltage tickler electrode on the main and neutralizer cathodes is examined. Startup of the thruster is achieved 100% of the time on the main cathode and 98.7% of the time on the neutralizer cathode over a 3640 cycle test. The thruster was started from a 20 C initial condition and operated for an hour at a 600 mA beam current. An energy efficiency of 75% and a propellant utilization efficiency of 77% was achieved over the complete cycle. The effect of a single cusp magnetic field thruster length on its performance is discussed. Guidelines are formulated for the shaping of magnetic field lines in thrusters. A model describing double ion production in mercury discharges is presented. The production route is shown to occur through the single ionic ground state. Photographs of the interior of an operating-hollow cathode are presented. A cathode spot is shown to be present if the cathode is free of low work-function surfaces. The spot is observed if a low work-function oxide coating is applied to the cathode insert. Results show that low work-function oxide coatings tend to migrate during thruster operation.

[The value of using administrative data in public health research: the Continuous Working Life Sample].

PubMed

López, María Andrée; Benavides, Fernando G; Alonso, Jordi; Espallargues, Mireia; Durán, Xavier; Martínez, José Miguel

2014-01-01

The use of administrative data is common practice in public health research. The present field note describes the Continuous Working Life Sample (CWLS) and its use in health research. The CWLS is built on records generated by all contacts with the social security system (work contracts, disability, etc.), plus tax data (monetary gains, income, etc.) and census data (level of education, country of birth, etc.), but does not allow individuals to be identified. The CWLS was started in 2004 with 4% (1.1 million persons) of the total population who were either contributors to or beneficiaries of the social security system. The information on the individuals in the CWLS is updated annually and lost individuals are replaced. This continuous design allows the construction of a cohort with information on working life and financial status and evaluation of their relationship with work disability. Future connection with clinical records would enable analysis of other health-related outcomes. Copyright © 2013 SESPAS. Published by Elsevier Espana. All rights reserved.

Dorrit Hoffleit: A Century of being a Woman in Astronomy

NASA Astrophysics Data System (ADS)

Hoffleit, Dorrit; Gay, P. L.

2006-12-01

From working as one of Harlan J. Smith's female calculators in 1928 to running Maria Mitchell Observatory in 1957 to being an emeritus research scientist at Yale University today, Dr. Dorrit Hoffleit has been a professional woman in astronomy for 78 years and an astronomy lover for a century. She has faced both accolades, starting with the Carolyn Wilby Prize in 1938 for her dissertation work, as well as discrimination, most notably being hired at the Aberdeen Proving Ground at a sub-professional rating during WWII. Through both good and bad, she kept her eye on the stars, and her focus on doing the best work she could. In this presentation, Dr. Hoffleit reflects on her experiences and her inspirations in an video-interview. Additionally, archival film provided by the AAVSO will be shown.

Study on Ultrafast Photodynamics of Novel Multilayered Thin Films for Device Applications

DTIC Science & Technology

2004-07-31

study ultrafast phase-transition of VO2 thin film. This part of work was started right after the new laser installed. With better laser output...1-3]. With the purpose of combined effect that the proposed ultrafast phase-transition VO2 thin film deposited on a substrate of heavy metal...second point of focus was to study ultrafast phase-transition of VO2 thin film. This part of work was started right after the new laser installed

Minto, Alaska Lakeview Lodge START Program Weatherization and Rehab Project Final Report

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

Titus, Bessie; Messier, Dave

This report details the process that Minto Village Council undertook during the DOE sponsored START program and the work that was completed on the main energy consumer in the community, the Minto Lakeview Lodge. The report takes a look at the steps leading up to the large weatherization and renovation project, the work the was completed as a result of the funding and the results in terms of effect on the community and real energy savings.

Aluminum alloy AA-6061 and RSA-6061 heat treatment for large mirror applications

NASA Astrophysics Data System (ADS)

Newswander, T.; Crowther, B.; Gubbels, G.; Senden, R.

2013-09-01

Aluminum mirrors and telescopes can be built to perform well if the material is processed correctly and can be relatively low cost and short schedule. However, the difficulty of making high quality aluminum telescopes increases as the size increases, starting with uniform heat treatment through the thickness of large mirror substrates. A risk reduction effort was started to build and test a ½ meter diameter super polished aluminum mirror. Material selection, the heat treatment process and stabilization are the first critical steps to building a successful mirror. In this study, large aluminum blanks of both conventional AA-6061 per AMS-A-22771 and RSA AA-6061 were built, heat treated and stress relieved. Both blanks were destructively tested with a cut through the thickness. Hardness measurements and tensile tests were completed. We present our results in this paper and make suggestions for modification of procedures and future work.

An Open Singularity-Free Cosmological Model with Inflation

NASA Astrophysics Data System (ADS)

Karaca, Koray; Bayin, Selçuk

In the light of recent observations which point to an open universe (Ω0 < 1), we construct an open singularity-free cosmological model by reconsidering a model originally constructed for a closed universe. Our model starts from a nonsingular state called prematter, governed by an inflationary equation of state P = (γp - 1)ρ where γp (~= 10-3) is a small positive parameter representing the initial vacuum dominance of the universe. Unlike the closed models universe cannot be initially static hence, starts with an initial expansion rate represented by the initial value of the Hubble constant H(0). Therefore, our model is a two-parameter universe model (γp,H(0)). Comparing the predictions of this model for the present properties of the universe with the recent observational results, we argue that the model constructed in this work could be used as a realistic universe model.

Laboratory testing of GNB switch 12 volt SLI (starting, lighting and ignition) battery

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

Hardin, J.E.

1990-03-01

The purpose of this report is to describe the testing performed on the GNB Switch flooded lead SLI battery in the INEL Electric Vehicle Battery Laboratory, to present the results and conclusions of this testing, and to make appropriate recommendations. GNB Inc. is a Pacific Dunlop Company. The term SWITCH'' comes from the fact that this product consists of two batteries in one package which can be connected in parallel by a switch for higher cranking energy or reserve capacity. The smaller second battery is float charged through a diode. GNB advertising describes the SWITCH'' as The Battery With Amore » Spare''. The Switch, a BCI Group 24 SLI (Starting, Lighting and Ignition) battery, is manufactured in Georgia for sale throughout the US. The initial design work on the Switch was done in Australia under the Pulsar name by Dunlop. 11 figs., 3 tabs.« less

Assessment of peak power and short-term work capacity.

PubMed

MacIntosh, Brian R; Rishaug, Peter; Svedahl, Krista

2003-02-01

The purpose of this study was to evaluate conditions for conducting a 30 s Wingate test such as load selection, and the method of starting the test (stationary or flying start). Nine male and four female athletes volunteered to be tested on four laboratory visits. Tests were performed on a modified Monark cycle ergometer (Varberg, Sweden) equipped with force transducers on the friction belt and an optical encoder for velocity measurement. Power was calculated with the moment of inertia (I) of the flywheel taken into consideration. One laboratory visit was used to determine individualized optimal resistance conditions. The other three visits were for performance of one of three Wingate tests: a flying start with 0.834 N x kg(-1) [85 g x kg(-1) body weight (BW)] resistance (FLY-0.8); a stationary start with 0.834 N x kg(-1) BW resistance (ST-0.8), or a stationary start with optimal resistance (ST-OPT). FLY-0.8 gave a lower (P<0.05) value for short-term work capacity [19,986 (827) J] than either ST-OPT [23,014 (1,167) J] or ST-0.8 [22,321 (1075) J]. Peak power output per pedal revolution was lower ( P<0.005) for FLY-0.8 [833 (40) W] than for either ST-0.8 [974 (57) W] or ST-OPT [989 (61) W]. The results of this study demonstrate that higher values for peak power and short-term work capacity are obtained with a test from a stationary start. It is apparently not necessary to use an individualized optimal resistance when I is considered in a Wingate test initiated from a standstill.

Cold Start of a Radiator Equipped with Titanium-Water Heat Pipes

NASA Technical Reports Server (NTRS)

Jaworske, Donald A.; Sanzi, James L.; Siamidis, John

2008-01-01

Radiator panels utilizing titanium-water heat pipes are being considered for lunar applications. A traditional sandwich structure is envisioned where heat pipes are embedded between two high thermal conductivity face sheets. The heat pipe evaporators are to be thermally connected to the heat source through one or more manifolds containing coolant. Initial radiator operation on the lunar surface would likely follow a cold soak where the water in the heat pipes is purposely frozen. To achieve heat pipe operation, it will be necessary to thaw the heat pipes. One option is to allow the sunlight impinging on the surface at sunrise to achieve this goal. Testing was conducted in a thermal vacuum chamber to simulate the lunar sunrise and additional modeling was conducted to identify steady-state and transient response. It was found that sunlight impinging on the radiator surface at sunrise was insufficient to solely achieve the goal of thawing the water in the heat pipes. However, starting from a frozen condition was accomplished successfully by applying power to the evaporators. Start up in this fashion was demonstrated without evaporator dryout. Concern is raised over thawing thermosyphons, vertical heat pipes operating in a gravity field, with no wick in the condenser section. This paper presents the results of the simulated cold start study and identifies future work to support radiator panels equipped with titanium-water heat pipes.

Continuous-wave to pulse regimes for a family of passively mode-locked lasers with saturable nonlinearity

NASA Astrophysics Data System (ADS)

Dikandé, Alain M.; Voma Titafan, J.; Essimbi, B. Z.

2017-10-01

The transition dynamics from continuous-wave to pulse regimes of operation for a generic model of passively mode-locked lasers with saturable absorbers, characterized by an active medium with non-Kerr nonlinearity, are investigated analytically and numerically. The system is described by a complex Ginzburg-Landau equation with a general m:n saturable nonlinearity (i.e {I}m/{(1+{{Γ }}I)}n, where I is the field intensity and m and n are two positive numbers), coupled to a two-level gain equation. An analysis of stability of continuous waves, following the modulational instability approach, provides a global picture of the self-starting dynamics in the system. The analysis reveals two distinct routes depending on values of the couple (m, n), and on the dispersion regime: in the normal dispersion regime, when m = 2 and n is arbitrary, the self-starting requires positive values of the fast saturable absorber and nonlinearity coefficients, but negative values of these two parameters for the family with m = 0. However, when the spectral filter is negative, the laser can self-start for certain values of the input field and the nonlinearity saturation coefficient Γ. The present work provides a general map for the self-starting mechanisms of rare-earth doped figure-eight fiber lasers, as well as Kerr-lens mode-locked solid-state lasers.

Ergonomics and workplace design: application of Ergo-UAS System in Fiat Group Automobiles.

PubMed

Vitello, M; Galante, L G; Capoccia, M; Caragnano, G

2012-01-01

Since 2008 Fiat Group Automobiles has introduced Ergo-UAS system for the balancing of production lines and to detect ergonomic issues. Ergo-UAS system integrates 2 specific methods: MTM-UAS for time measurement and EAWS as ergonomic method to evaluate biomechanical effort for each workstation. Fiat is using a software system to manage time evaluation and ergo characterization of production cycle (UAS) to perform line balancing and obtain allowance factor in all Italian car manufacturing plant. For new car models, starting from New Panda, FGA is applying Ergo-UAS for workplace design since the earliest phase of product development. This means that workplace design is based on information about new product, new layout, new work organization and is performed by a multidisciplinary team (Work Place Integration Team), focusing on several aspects of product and process: safety, quality and productivity. This allows to find and solve ergonomic threats before the start of production, by means of a strict cooperation between product development, engineering and design, manufacturing. Three examples of workstation design are presented in which application of Ergo-UAS was determinant to find out initial excessive levels of biomechanical load and helped the process designer to improve the workstations and define limits of acceptability. Technical activities (on product or on process), or organizational changes, that have been implemented in order to solve the problems are presented. A comparison between "before" and "new" ergonomic scores necessary to bring workstations in acceptable conditions were made.

Electron tomography and 3D molecular simulations of platinum nanocrystals

NASA Astrophysics Data System (ADS)

Florea, Ileana; Demortière, Arnaud; Petit, Christophe; Bulou, Hervé; Hirlimann, Charles; Ersen, Ovidiu

2012-07-01

This work reports on the morphology of individual platinum nanocrystals with sizes of about 5 nm. By using the electron tomography technique that gives 3D spatial selectivity, access to quantitative information in the real space was obtained. The morphology of individual nanoparticles was characterized using HAADF-STEM tomography and it was shown to be close to a truncated octahedron. Using molecular dynamics simulations, this geometrical shape was found to be the one minimizing the nanocrystal energy. Starting from the tomographic reconstruction, 3D crystallographic representations of the studied Pt nanocrystals were obtained at the nanometer scale, allowing the quantification of the relative amount of the crystallographic facets present on the particle surface.This work reports on the morphology of individual platinum nanocrystals with sizes of about 5 nm. By using the electron tomography technique that gives 3D spatial selectivity, access to quantitative information in the real space was obtained. The morphology of individual nanoparticles was characterized using HAADF-STEM tomography and it was shown to be close to a truncated octahedron. Using molecular dynamics simulations, this geometrical shape was found to be the one minimizing the nanocrystal energy. Starting from the tomographic reconstruction, 3D crystallographic representations of the studied Pt nanocrystals were obtained at the nanometer scale, allowing the quantification of the relative amount of the crystallographic facets present on the particle surface. Electronic supplementary information (ESI) available. See DOI: 10.1039/c2nr30990d

Doing Our Homework: A Pre-Employment Screening Checklist for Better Head Start Hiring.

ERIC Educational Resources Information Center

McSherry, Jim; Caruso, Karen; Cagnetta, Mary

1999-01-01

Provides a checklist for screening potential Head Start employees. Components include checks for criminal record, credit history, motor vehicle records, social security number tracing, previous address research, education verification, work and personal reference interview, and professional license verification. (KB)

Inspection of Construction Works According to Polish Construction Law

NASA Astrophysics Data System (ADS)

Czemplik, A.

2015-11-01

Construction regulations are still different in many European countries, even though the European Union directives have unified many acts for construction works and construction products in the member countries. The scheme of the construction process presented in the paper could be valid for most countries, despite of detailed regulations of legal systems. The number of construction regulations to be followed in order to get the Construction Permit in Poland is rather big, so the time between the start of the investment process and the day when the Construction Permit is issued could be several months. Only licensed professional engineers can play the role of site managers, site inspectors and designers, registered for the given construction project. Duties and responsibilities (civil liability) of these engineers are strictly defined by regulations. The obligatory inspection of construction works should be executed by the licensed site inspectors. Moreover, the works can be incidentally inspected by Authority, banks, insurance companies or designers. Foreign designers and foreign site engineers in order to be allowed by respective Authority to play official roles on Polish construction sites should present documents proving that they can do the same jobs in their countries as per regulations obligatory there.

The ergonomic process of an automotive company in Brazil: a study case.

PubMed

Bustos, Carolina; Fischer, Daniela; Ballardin, Lucimara; Nielsen, Rudolf

2012-01-01

The goal of this paper is to present the ergonomic process of an automotive company, whose focus is on the adaptation of the work conditions to the psychophysiological characteristics of its employees. The planning and the development of the ergonomic actions took place in three distinctive stages: ergonomic analysis of the work post (stage 1), ergonomic adaptations (stage 2) and Ergonomic Committee (stage 3). The activities started in June 2006 and have lasted to the current date, keeping a permanent improving process. The procedure adopted was based on the ergonomic analysis methodology proposed by Wisner (1994:1997) and the stages of the Ergonomic Analysis of Work presented in the 17 NR Regulatory Manual (MET, 2002). The paper's approach focused on the voluntary participation of workers from different areas and different hierarchical levels of the organization throughout all the stages of the process. The methodological procedures included descriptive research techniques, exploratory and qualitative research criteria, background and guidelines available in literature and legislation, as well as company information. Among the main results it can be mentioned the satisfaction of the employees regarding the appropriate work conditions, cultural and organizational changes and the creation of an Ergonomic Committee in the company.

Analysis of traffic congestion induced by the work zone

NASA Astrophysics Data System (ADS)

Fei, L.; Zhu, H. B.; Han, X. L.

2016-05-01

Based on the cellular automata model, a meticulous two-lane cellular automata model is proposed, in which the driving behavior difference and the difference of vehicles' accelerations between the moving state and the starting state are taken into account. Furthermore the vehicles' motion is refined by using the small cell of one meter long. Then accompanied by coming up with a traffic management measure, a two-lane highway traffic model containing a work zone is presented, in which the road is divided into normal area, merging area and work zone. The vehicles in different areas move forward according to different lane changing rules and position updating rules. After simulation it is found that when the density is small the cluster length in front of the work zone increases with the decrease of the merging probability. Then the suitable merging length and the appropriate speed limit value are recommended. The simulation result in the form of the speed-flow diagram is in good agreement with the empirical data. It indicates that the presented model is efficient and can partially reflect the real traffic. The results may be meaningful for traffic optimization and road construction management.

Student voice - Getting motivated.

PubMed

Cowen, Emma

2016-05-09

ON THE whole, I consider myself a calm, logical person who rarely gets stressed. This stands me in good stead on placement, but it causes problems when it comes to the academic side of being a student. I rarely start work when I should. I have not yet started an essay the night before it is due, but it is unheard of for me to start an essay sooner than two weeks before it is due.

An Invitation to Open Innovation in Malaria Drug Discovery: 47 Quality Starting Points from the TCAMS.

PubMed

Calderón, Félix; Barros, David; Bueno, José María; Coterón, José Miguel; Fernández, Esther; Gamo, Francisco Javier; Lavandera, José Luís; León, María Luisa; Macdonald, Simon J F; Mallo, Araceli; Manzano, Pilar; Porras, Esther; Fiandor, José María; Castro, Julia

2011-10-13

In 2010, GlaxoSmithKline published the structures of 13533 chemical starting points for antimalarial lead identification. By using an agglomerative structural clustering technique followed by computational filters such as antimalarial activity, physicochemical properties, and dissimilarity to known antimalarial structures, we have identified 47 starting points for lead optimization. Their structures are provided. We invite potential collaborators to work with us to discover new clinical candidates.

Two Architects and One Engineer: The Reconciliation of Disciplines

NASA Astrophysics Data System (ADS)

Belén Gómez Gómez, María

2017-10-01

At the end of the 17th century, when the Académie royale d’architecture was created in France, architecture was studied for the first time from a theoretical and analytical point of view. 100 years later, the École royale des ponts et chaussées was found, also in France. This division of responsibilities within the building discipline varies from country to country and within the specific historical period but, the idea of two professional branches related to architecture, remains to the present day. Through the centuries, this division has been perceived as a problem or as an advantage depending on the specific event, project or construction. However, at the end of the 19th century, when reinforced concrete came into the world of construction, both branches started an interesting collaboration that produced not just marvelous buildings but also helped to evolve architecture. This collaboration started in France and then spread to Spain, Italy and the rest of Europe. As an example of the work that these professionals carried out together was the team formed in the late fifties of the last century by two architects, Bruno Morassutti and Angelo Mangiarotti and an engineer, Aldo Favini. They worked together in Italy projecting amazing and very significant works, such as the Church of Mater Misericordiae which was constructed in Milan between the years 1956 and 1958. One of the main conclusions is that an adequate approach in the collaborative work of architects and engineers, results in impressive and amazing works in which the combination of aesthetic qualities and structural efficiency result in a harmonious building with plenty of significance.

Recovery and well-being among Helicopter Emergency Medical Service (HEMS) pilots.

PubMed

Radstaak, Mirjam; Geurts, Sabine A E; Beckers, Debby G J; Brosschot, Jos F; Kompier, Michiel A J

2014-07-01

This study investigated the effects of a compressed working week with high cognitive and emotional work demands within the population of Dutch Helicopter Emergency Medical Service (HEMS) pilots. Work stressors were measured and levels of well-being were examined before, during and after a series of day and night shifts. Results revealed that (i) the start of a series of day shifts was more taxing for well-being than the start of a series of night shifts, (ii) there were no differences in the decrease in well-being during day and night shifts, (iii) distress during shifts was more strongly related to a decrease in well-being during night than during day shifts and (iv) it took HEMS pilots more time to recover from a series of night shifts than from a series of day shifts. It is concluded that HEMS pilots should not start earlier during day shifts, nor have longer series of night shifts. Copyright © 2013 Elsevier Ltd and The Ergonomics Society. All rights reserved.

Structural and Optical Properties of Cd 1- x Se x Thin Films Deposited by Electron Beam Evaporation Technique

NASA Astrophysics Data System (ADS)

Tripathi, Ravishankar Nath; Verma, Aneet Kumar; Rahul, Vishwakarma, S. R.

2011-10-01

Cadmium selenide (CdSe) thin films deposited by means of electron beam evaporation technique under high vacuum ˜10 -5 torr on ultrasonically cleaned glass substrate. Using stating materials of various compositions of cadmium and selenium using formula Cd 1- x Se x where x is orbitory constant having value 0.20≤ x ≤0.40 here we take less value of x for the creation of anion vacancy in thin films. In present work the structural properties have been studies using XRD technique and found that starting materials and thin films both are polycrystalline in nature having hexagonal structure. Here we study the effect of composition ratio Cd/Se in starting material and its prepared thin films on its grain size and lattice parameter. From the analysis of X-Ray diffractogram found that lattice parameter and grain size both are decreases with increasing Cd/Se ratio in thin films as well as in starting material the preferred orientation in thin films along (100) plane. The surface morphology was studied using SEM characterization and found that films are smooth and homogeneous. The films have been analysed for optical band gap and absorbed a direct band gap.

Work-related musculoskeletal complaints: some ergonomics challenges upon the start of a new century.

PubMed

Westgaard, R H

2000-12-01

Three themes likely to be important within health-related ergonomics in the coming years are discussed. The first two themes concern methods for risk analysis of low-level biomechanical and psychosocial exposures. The third theme is approaches to successful implementation of ergonomics interventions. Evidence on the assessment of low-level biomechanical and psychosocial exposures by instrumented measurements is discussed. It is concluded that, despite recent advances in our understanding of exposure-effect associations under these exposure conditions, we must at present rely on more subjective methods, employed in a collaboration between expert and worker. This approach to risk analysis identifies in most cases critical exposures in a work situation. The focus should then be on the successful implementation of measures against those exposures, as identification alone does not solve problems. The aim of improved health for the workers further requires that the full complement of risk factors be considered, including work, leisure time and person-based risk factors. Finally, the need to put ergonomics intervention initiatives in an organisational context is emphasised, and examples of approaches used by Norwegian companies are presented.

A model for the behaviour of the Solar Energetic Particle Events inside Magnetic Clouds

NASA Astrophysics Data System (ADS)

Medina, J.; Hidalgo, M. A.

2006-12-01

The modulation effects of the solar ejecta over the solar energetic particle event SEPe fluxes (0,5-100 MeV) provided by solar flares have recently been highlighted. Especially important is the behaviour of these fluxes inside MCs where, in spite of the low magnetic field intensities of these interplanetary structures (about 30 nT), a decrease in the population of the energetic particles is observed. In the present work it is shown a simple theoretical model we have developed to analyse the behaviour of those fluxes inside the magnetic clouds (MCs) using, as a starting point, our previous magnetic field model for MCs. The experimental data from ACE, GOES, SAMPEX, SOHO, Ulysses and WIND satellites are presented, both from MC coincident with SEPe and not coincident. This work has been supported by the Spanish Comisión Internacional de Ciencia y Tecnología (CICYT), grant ESP2005-07290-C02-01 and ESP2006-08459 and Madrid Autonomous Community / University of Alcala grant CAM-UAH 2005/007. This work is performed inside COST Action 724.

Sustaining Change in Every Classroom

ERIC Educational Resources Information Center

Heidemann, Sandra; Chang, Claire; Hewitt, Deb; Menninga, Beth

2007-01-01

Words Work! and Community Action Head Start have been working together for seven years to provide training, consultation, mentoring, and resources to teachers in pilot classrooms as they learned to implement effective early literacy strategies. In its work with teachers, Words Work! developed a culture "where ongoing assessment, reflective…

Advanced Command Destruct System (ACDS) Enhanced Flight Termination System (EFTS)

NASA Technical Reports Server (NTRS)

Tow, David

2009-01-01

NASA Dryden started working towards a single vehicle enhanced flight termination system (EFTS) in January 2008. NASA and AFFTC combined their efforts to work towards final operating capability for multiple vehicle and multiple missions simultaneously, to be completed by the end of 2011. Initially, the system was developed to support one vehicle and one frequency per mission for unmanned aerial vehicles (UAVs) at NASA Dryden. By May 2008 95% of design and hardware builds were completed, however, NASA Dryden's change of software safety scope and requirements caused delays after May 2008. This presentation reviews the initial and final operating capabilities for the Advanced Command Destruct System (ACDS), including command controller and configuration software development. A requirements summary is also provided.

Large angle magnetic suspension test fixture

NASA Technical Reports Server (NTRS)

Britcher, Colin P.

1993-01-01

Progress made under the subject grant in the period from 1 Nov. 1992 to 31 May 1993 is presented. The research involves the continued development of the Large Angle Magnetic Suspension Test Fixture (LAMSTF) and also the recommissioning of an additional piece of exisiting hardware. During the period in question, the initial configuration of LAMSTF was completed and made routinely and reliably operational. A digital phase advance controller was completed and documented. The goal of a controlled 360 deg rotation was achieved. Work started on the recommissioning of the Annular Suspension and Pointing System (ASPS). Work completed during the report period included: modeling; position sensing; controller; support of the Second International Symposium on Magnetic Suspension Technology; and recommissioning of the Annular Suspension and Pointing System.

The Pioneering Work of Enrico Morselli (1852-1929) in Light of Modern Scientific Research on Hypnosis and Suggestion.

PubMed

Bartolucci, Chiara; Lombardo, Giovanni Pietro

2017-01-01

This article examines research on hypnosis and suggestion, starting with the nineteenth-century model proposed by Enrico Morselli (1852-1929), an illustrious Italian psychiatrist and psychologist. The authors conducted an original psychophysiological analysis of hypnosis, distancing the work from the neuropathological concept of the time and proposing a model based on a naturalistic approach to investigating mental processes. The issues investigated by Morselli, including the definition of hypnosis and analysis of specific mental processes such as attention and memory, are reviewed in light of modern research. From the view of modern neuroscientific concepts, some problems that originated in the nineteenth century still appear to be present and pose still-open questions.

Launching to the Moon, Mars, and Beyond

NASA Technical Reports Server (NTRS)

Shivers, C. Herbert

2008-01-01

This viewgraph presentation reviews the planned launching to the Moon, and Mars. It is important to build beyond the capacity to ferry astronauts and cargo to low Earth orbit. NASA is starting to design new vehicles using the past lessons to minimize cost, and technical risks. The training and education of engineers that will continue the work of designing, testing and flying the vehicles is important to NASA. The following questions were addressed: 1) What is NASA's mission? 2) Why do we explore? 3) What is our timeline? 4) Why the Moon first? 5) What will the vehicles look like? 5) What progress have we made? 6) Who will be doing the work? and 7) What are the benefits of space exploration?

Stellan Hjertén’s contribution to the development of monolithic stationary phases

PubMed Central

Svec, Frantisek

2009-01-01

This overview is presented to celebrate birthday of one of the luminaries of the separation science and my friend – Stellan Hjertén. He made significant contributions to a variety of areas in the separation science such as electrophoresis, liquid chromatography, and capillary electrochromatography to name just a few. Since the scope of his work was enormous, this review will focus only on a single aspect of his scientific activities, design and applications of monolithic materials. During the years starting from 1989, Stellan Hjertén published many excellent papers concerning the preparation of acrylamide chemistry-based monoliths and their use in both micro-HPLC and capillary electrochromatography. The following text details his works in field. PMID:18383033

45 CFR 1311.4 - Qualifications, selection, and placement.

Code of Federal Regulations, 2013 CFR

2013-10-01

... DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND... Start program or otherwise working in the field of child development and family services. The... with services to children and families; and (5) Other appropriate settings. (c) A Head Start Fellow who...

45 CFR 1311.4 - Qualifications, selection, and placement.

Code of Federal Regulations, 2014 CFR

2014-10-01

... DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND... Start program or otherwise working in the field of child development and family services. The... with services to children and families; and (5) Other appropriate settings. (c) A Head Start Fellow who...

45 CFR 1311.4 - Qualifications, selection, and placement.

Code of Federal Regulations, 2012 CFR

2012-10-01

... DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND... Start program or otherwise working in the field of child development and family services. The... with services to children and families; and (5) Other appropriate settings. (c) A Head Start Fellow who...

New Start Program Report: September 1985--June 1989.

ERIC Educational Resources Information Center

Winchell, Anne

In 1985, Kingsborough Community College (KCC) in Brooklyn, established the New Start Program to assist students who began their post-secondary education at cooperating senior colleges, but encountered academic difficulties there. The program offers individual and group counseling to help participants overcome previous difficulties and work toward…

Data Science Careers: A Sampling of Successful Strategies, Pitfalls, and Persistent Challenges

NASA Astrophysics Data System (ADS)

Stocks, K. I.; Duerr, R.; Wyborn, L. A.; Yarmey, L.

2015-12-01

Data Scientists do not have a single career trajectory or preparatory pathway. Successful data scientists have come from domain sciences, computer science, library science, and other diverse fields. They have worked up from entry-level staff positions, have started as academics with doctoral degrees, and have established themselves as management professionals. They have positions in government, industry, academia, and NGO's, and their responsibilities range from highly specialized, to generalists, to high-level leadership. This presents a potentially confusing landscape for students interested in the field: how to decide among the varied options to have the best chance at fulfilling employment? What are the mistakes to avoid? Many established data scientist, both old-timers and early career professionals, expressed interest in presenting in this session but were unable to justify using their one AGU abstract for something other than their funded projects. As the session chairs we interviewed them, plus our extended network of colleagues, to ask for their best advice on what was most critical to their success in their current position, what pitfalls to avoid, what ongoing challenges they see, and what advice they would give themselves, if they could do it all over again starting now. Here we consolidate those interviews with our own perspectives to present some of the common themes and standout advice.

Good Seeing: Best Practices for Sustainable Operations at the Air Force Maui Optical and Supercomputing Site

DTIC Science & Technology

2016-01-01

supportive of this work from the start . This research would not have been possible without the contributions made by a number of individuals throughout...and funding structures. We started with these questions in particular based on the primary concerns at AMOS identified in the results of Phase I...from the start . Keck maintains connections with a series of other sites within a remote observing network. Remote observing from the mainland

Working Time: Tendencies and Emerging Issues.

ERIC Educational Resources Information Center

Bosch, Gerhard

1999-01-01

Examines issues of working time starting with International Labor Organization standards and reports on changes and the forces driving them. Outlines conditions in which working-time reductions are likely to affect employment positively and concludes with topics for further analysis. (Author/JOW)

Preparedness of final-year Turkish nursing students for work as a professional nurse.

PubMed

Güner, Perihan

2015-03-01

To determine the preparedness levels of final-year Turkish nursing students starting their careers as professional nurses. The transition from nursing student to professional nurse is challenging. One of the ways to help facilitate this transition is to determine how well students are prepared to start work. There are limited, but conflicting, results on this topic. Mixed-methods study. Undergraduate nursing students (n = 4490) in their final year of study from 74 Turkish universities were eligible to participate in this study. Of these, 1804 total students participated from 38 randomly selected universities. Data were collected through an investigator-developed questionnaire (n = 1804) and focus group interviews (n = 57). Students felt highly prepared to start work (57·6%). Those who were older, male, graduates of a vocational high school or already working as a nurse felt most prepared. Students who felt that their education preparation and resources were adequate felt more prepared. Focus group interviews revealed that students felt confident in their knowledge of educational theory, but not in clinical skills. Students may have felt prepared to start work, but insufficient clinical experience probably contributed to a lack of confidence in their skills. The resources of the school, the quality of the education, and the clinical practice environments were considered most important for the students' perceived preparedness levels. An undergraduate education provides the foundation for successful nurse preparation. A good clinical environment along with a high-quality education programme can help give students more confidence in their skills when they join the nursing workforce. Internship or residency programmes may also facilitate this learning. This is extremely important for safe, high-quality patient care. © 2014 John Wiley & Sons Ltd.

Media Education in Kazakhstan: Work Experience

ERIC Educational Resources Information Center

Laila, Akhmetova

2016-01-01

In the Republic of Kazakhstan in 2012 started work on formation of literacy in the field of media education for journalists, educators, and youth. Studied publishing foreign scientists, work experience in different countries, manuals, seminars and workshops, publishes scientific works in the Kazakh and Russian languages, and considers issues of…

Working Less and Enjoying It More: Alternative Work Schedules.

ERIC Educational Resources Information Center

Shanks, Katherine

1984-01-01

Explores three forms of alternative work schedules that research has shown improve job performance and decrease absenteeism: flextime (starting and stopping times vary within limits); permanent part-time employment (regular employment carried out during shorter working hours); and job sharing (two or more part-time employees share one full-time…

Long-term archives of land surface albedo products through the EUMETSAT/LSA-SAF and ECMWF/C3S projects: status and project development plan

NASA Astrophysics Data System (ADS)

Carrer, D.; Pinault, F.; Ceamanos, X.; Meurey, C.; Moparthy, S.; Swinnen, E.; Trigo, I.

2017-12-01

The two space programs of EUMETSAT (project CDOP3, LSA-SAF) and ECMWF (the Copernicus Climate Change Service; C3S_312a Lot9) provide (or will provide) added-value satellite products for the meteorological and environmental science communities, especially in the fields of climate modeling, environmental management, natural hazards management, and climate change detection. The EUMETSAT/LSA-SAF project started in 1999 with research and development activities. The Third Continuous Development and Operations Phase (CDOP-3) starts in March 2017 and will end in 2022. This project uses instruments on board European satellites that were, or will be, launched between 2004 and 2022. Unlike the LSA-SAF, the COPERNICUS/C3S_312a project has no NRT constraint. Its first phase started in november 2016. One of the major objective of the COPERNICUS/C3S_312a project is to harmonize datasets from various sensors in order to provide consistent and continuous ECV products from the 80's until now.Presently, the delivered operational products comprise several surface albedo products using data from various space missions (METEOSAT, NOAA, METOP, …). We present here the portfolio of the surface albedo products that are disseminated with an operational status. Their characteristics and accuracy are detailed here after. Also we will present the development plan to produce long-term re-analysis and to prepare the arrival of the next generation of satellite (MTG, EPS-SG, ...). This work will lead in 2018 to 40 years of products characterizing the albedo properties of the surface. These programs provide a great opportunity to monitor and identify human-induced climate change since consistent production of data sets is guaranteed until at least 2022.

Making Sense of Energy

ERIC Educational Resources Information Center

Boohan, Richard

2014-01-01

This article describes an approach to teaching about the energy concept that aims to be accessible to students starting in early secondary school, while being scientifically rigorous and forming the foundation for later work. It discusses how exploring thermal processes is a good starting point for a more general consideration of the ways that…

Start-Up Success: Collection Development

ERIC Educational Resources Information Center

Awe, Susan C.

2010-01-01

All those who dream of working for themselves and being their own boss, whether they are fresh college graduates, recently unemployed, or newly retired from one career, have a thousand questions about where and how to begin. New entrepreneurs especially will need professional, expert help to start and run a small business effectively and…

10 CFR 36.15 - Start of construction.

Code of Federal Regulations, 2010 CFR

2010-01-01

... Requirements § 36.15 Start of construction. The applicant may not begin construction of a new irradiator prior... work, purchase of a site, site surveys or soil testing, site preparation, site excavation, construction... license with respect to the requirements of the Atomic Energy Act of 1954, as amended, and rules...

New Start: Pre-Enrollment Programme for Mature Age Students.

ERIC Educational Resources Information Center

Morrison, A. A.

1979-01-01

Describes the "New Start" preenrollment program in Auckland (New Zealand) University for mature-age students to prepare them for the requirements of university study and show them how to cope with degree work. Discusses factors to explain the success of mature-age students, in particular the "New Starters." (MF)

Helping Anxious Students Move Forward

ERIC Educational Resources Information Center

Minahan, Jessica

2018-01-01

Students with anxiety are prone to giving up a difficult work assignment before they even start it. So how can teachers help these students develop skills to successfully start and finish assignments and succeed in school? Behavioral analyst Jessica Minahan offers some practical solutions that teachers can implement in the classroom to motivate…

45 CFR 1306.3 - Definitions.

Code of Federal Regulations, 2013 CFR

2013-10-01

... option means Head Start services provided to children in both a center setting and through intensive work... the meeting held at the Head Start center between the child's teacher and the child's parents during... 45 Public Welfare 4 2013-10-01 2013-10-01 false Definitions. 1306.3 Section 1306.3 Public Welfare...

45 CFR 1306.3 - Definitions.

Code of Federal Regulations, 2014 CFR

2014-10-01

... option means Head Start services provided to children in both a center setting and through intensive work... the meeting held at the Head Start center between the child's teacher and the child's parents during... 45 Public Welfare 4 2014-10-01 2014-10-01 false Definitions. 1306.3 Section 1306.3 Public Welfare...

45 CFR 1306.3 - Definitions.

Code of Federal Regulations, 2012 CFR

2012-10-01

... option means Head Start services provided to children in both a center setting and through intensive work... the meeting held at the Head Start center between the child's teacher and the child's parents during... 45 Public Welfare 4 2012-10-01 2012-10-01 false Definitions. 1306.3 Section 1306.3 Public Welfare...

UK Renal Registry 18th Annual Report: Chapter 11 2014 Multisite Dialysis Access Audit in England, Northern Ireland and Wales and 2013 PD One Year Follow-up: National and Centre-specific Analyses.

PubMed

Rao, Anirudh; Evans, Rebecca; Wilkie, Martin; Fluck, Richard; Kumwenda, Mick

2016-01-01

Data are presented from the third combined vascular and peritoneal dialysis access audit. In 2014, 53 centres in England, Wales and Northern Ireland (out of 62) returned data on first access from 4,339 incident haemodialysis (HD) patients and 1,090 incident peritoneal dialysis (PD) patients. Of the 5,429 incident patients, 20.1% started dialysis on PD, 27.8% started with an arteriovenous fistula (AVF), 1.0% with an arteriovenous graft (AVG), 27.1% on a tunnelled line (TL) and 24.0% on a non-tunnelled line (NTL). Older patients (565 years) were more likely to start haemodialysis using AVF compared to their younger counterparts (36.2% vs. 32.8%). Thirteen of the nineteen centres (68%) using the physician led percutaneous insertion technique had over 20% of their incident patients starting on PD when compared to only seven out of fourteen centres (50%) which used single technique (open surgical or laparoscopic) for their PD catheter insertion. Wide variations were apparent between centres for use of AVF as the first haemodialysis access ranging from 10–54%. Eight of the 49 centres were achieving close to the 65% target for AV fistula in their incident patients. Length of time known to nephrology services and likelihood of commencing dialysis using either an AVF or a PD catheter are strongly associated. Patients who were known to a nephrologist for over one year were more likely to start dialysis with AVF, as compared to those who were referred between 90–365 days (39.2% vs. 24.6%). Similarly, patients who were known to a nephrologist between 90 days and one year were more likely to start on PD when compared to patients who were referred <90 days prior to dialysis start (26.9% vs. 9.1%). By comparison, amongst the late presenters, only 3.5% had first access documented as an AVF and 87.3% started dialysis on either a tunnelled line or a non-tunnelled line. Initial surgical assessment was a key determinant of the likelihood of AVF formation. Of the incident patients known to renal services for longer than three months and in those assessed by a surgeon at least three months prior to starting dialysis, 71.4% started dialysis with an AVF whereas of those who were not seen by a surgeon only 10.8% did. Thirty one of the 38 centres were 2 or 3 standard deviations below the 85% target for prevalent haemodialysis patients with an AV fistula. For centres returning data on one-year peritoneal dialysis outcomes, the majority of centres (28/32) maintained 550% of patients on PD at one year, having censored for transplantation. This report demonstrates wide variations in practice between centres across several domains in the provision of dialysis access and further work will be required to understand the underlying reasons.

Modified fluctuation-dissipation and Einstein relation at nonequilibrium steady states

NASA Astrophysics Data System (ADS)

Chaudhuri, Debasish; Chaudhuri, Abhishek

2012-02-01

Starting from the pioneering work of Agarwal [G. S. Agarwal, Zeitschrift für PhysikEPJAFV1434-600110.1007/BF01391621 252, 25 (1972)], we present a unified derivation of a number of modified fluctuation-dissipation relations (MFDR) that relate response to small perturbations around nonequilibrium steady states to steady-state correlations. Using this formalism we show the equivalence of velocity forms of MFDR derived using continuum Langevin and discrete master equation dynamics. The resulting additive correction to the Einstein relation is exemplified using a flashing ratchet model of molecular motors.

Earth Science Applications Showcase

NASA Image and Video Library

2014-08-05

Lisa Waldron and Justin Roberts-Pierel present their project on Texas health and air quality during the annual DEVELOP Earth Science Application Showcase at NASA headquarters Tuesday, August 5, 2014. The Earth Science Applications Showcase highlights the work of over 150 participants in the 10-week DEVELOP program that started in June. The DEVELOP Program bridges the gap between NASA Earth science and society, building capacity in both its participants and partner organizations, to better prepare them to handle the challenges that face our society and future generations. Photo Credit: (NASA/Aubrey Gemignani)

Perspectives future space on robotics

NASA Technical Reports Server (NTRS)

Lavery, Dave

1994-01-01

Last year's flight of the German ROTEX robot flight experiment heralded the start of a new era for space robotics. ROTEX is the first of at least 10 new robotic systems and experiments that will fly before 2000. These robots will augment astronaut on-orbit capabilities and extend virtual human presence to lunar and planetary surfaces. The robotic systems to be flown in the next five years fall into three categories: extravehicular robotic (EVR) servicers, science payload servicers, and planetary surface rovers. A description of the work on these systems is presented.

SPARSKIT: A basic tool kit for sparse matrix computations

NASA Technical Reports Server (NTRS)

Saad, Youcef

1990-01-01

Presented here are the main features of a tool package for manipulating and working with sparse matrices. One of the goals of the package is to provide basic tools to facilitate the exchange of software and data between researchers in sparse matrix computations. The starting point is the Harwell/Boeing collection of matrices for which the authors provide a number of tools. Among other things, the package provides programs for converting data structures, printing simple statistics on a matrix, plotting a matrix profile, and performing linear algebra operations with sparse matrices.

Tips for a physician in getting the right job, part XXIII: starting a new job.

PubMed

Harolds, Jay A

2015-06-01

After signing a contract, the new doctor has much to do before starting work, such as licensing, credentialing, finding a new home, and moving. There are important tips for a new physician in doing well in a job, such as asking for frequent feedback, doing at least one's share of the work, being at the job and available when expected, being sensitive and helpful to the needs of patients and members of the health care team, cultivating relationships, and in some cases, marketing.

START II Frame Work

DTIC Science & Technology

1992-04-01

Colonel Richard J. Barringer , USAF The Industrial College of the Armed Forces National Defense University Fort McNair, Washington, D.C. 20319-6000 93...Executive Research Project A94 START II Frame Work Lieutenant Colonel Donald E. Belche U.S. Air Force Faculty Research Advisor Colonel Richard J. Barringer ...1,659 - 3,456 0.48 Bombers 0.11 x 4,208 = 463 - 1,100 = 0.42 Total 9,064 2,248 - 5,956 = 0.38 charts 12 and 13 28 CHART 14 U.§ IA~aI ULA QC TU R AFTER 5

Good enough practices in scientific computing.

PubMed

Wilson, Greg; Bryan, Jennifer; Cranston, Karen; Kitzes, Justin; Nederbragt, Lex; Teal, Tracy K

2017-06-01

Computers are now essential in all branches of science, but most researchers are never taught the equivalent of basic lab skills for research computing. As a result, data can get lost, analyses can take much longer than necessary, and researchers are limited in how effectively they can work with software and data. Computing workflows need to follow the same practices as lab projects and notebooks, with organized data, documented steps, and the project structured for reproducibility, but researchers new to computing often don't know where to start. This paper presents a set of good computing practices that every researcher can adopt, regardless of their current level of computational skill. These practices, which encompass data management, programming, collaborating with colleagues, organizing projects, tracking work, and writing manuscripts, are drawn from a wide variety of published sources from our daily lives and from our work with volunteer organizations that have delivered workshops to over 11,000 people since 2010.

Mode coupling in spin torque oscillators

DOE PAGES

Zhang, Steven S. -L.; Zhou, Yan; Li, Dong; ...

2016-09-15

A number of recent experimental works have shown that the dynamics of a single spin torque oscillator can exhibit complex behavior that stems from interactions between two or more modes of the oscillator, such as observed mode-hopping or mode coexistence. There has been some initial work indicating how the theory for a single-mode (macro-spin) spin torque oscillator should be generalized to include several modes and the interactions between them. In the present work, we rigorously derive such a theory starting with the Landau–Lifshitz–Gilbert equation for magnetization dynamics by expanding up to third-order terms in deviation from equilibrium. Here, our resultsmore » show how a linear mode coupling, which is necessary for observed mode-hopping to occur, arises through coupling to a magnon bath. In conclusion, the acquired temperature dependence of this coupling implies that the manifold of orbits and fixed points may shift with temperature.« less

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

Zhang, Steven S. -L.; Zhou, Yan; Li, Dong

A number of recent experimental works have shown that the dynamics of a single spin torque oscillator can exhibit complex behavior that stems from interactions between two or more modes of the oscillator, such as observed mode-hopping or mode coexistence. There has been some initial work indicating how the theory for a single-mode (macro-spin) spin torque oscillator should be generalized to include several modes and the interactions between them. In the present work, we rigorously derive such a theory starting with the Landau–Lifshitz–Gilbert equation for magnetization dynamics by expanding up to third-order terms in deviation from equilibrium. Here, our resultsmore » show how a linear mode coupling, which is necessary for observed mode-hopping to occur, arises through coupling to a magnon bath. In conclusion, the acquired temperature dependence of this coupling implies that the manifold of orbits and fixed points may shift with temperature.« less

Division XII / Commission 41 / Working Group Historical Instruments

NASA Astrophysics Data System (ADS)

Pigatto, Luisa; Il-Seong, Nha; Hamel, Jürgen; Johnson, Kevin; Kochhar, Rajesh K.; Nakamura, Tsuko; Orchiston, Wayne; Pettersen, Bjørn R.; Schechner, Sara J.; Yunli, Shi

The Historical Instruments Working Group (WG-HI) and Commission 41 started planning an interdisciplinary conference titled Astronomy and its instruments before and after Galileo since January 2007. This conference, as an IYA2009 initiative, aims “to highlight mankind's path toward an improved knowledge of the sky using mathematical and mechanical tools as well as monuments and buildings, giving rise, in doing so, to scientific astronomy”. Commission 46 and Commission 55 also support this conference, to be held on the Isle of San Servolo, Venice (Italy), 27 September 3 October 2009. As a fact of history, it was in Venice that Galileo was advised and got material (glass) to make his telescope, and in Venice he presented an working instrument to Venetian Doge in August 1609. The conference is co-sponsored by IAU as a Joint Symposium with the INAF Astronomical Observatory of Padova, Italy.

The Impact of Head Start on Children, Families and Communities. Final Report of the Head Start Evaluation, Synthesis and Utilization Project.

ERIC Educational Resources Information Center

McKey, Ruth Hubbell; And Others

Including all Head Start research (both published and unpublished) and using, when possible, the statistical technique of meta-analysis, this final report of the Head Start Evaluation, Synthesis, and Utilization Project presents findings on the impact of Head Start on children's cognitive and socioemotional development, on child health and health…

Significant Issues in Rebuilding the Social Work Profession in China

ERIC Educational Resources Information Center

Shu, Cai

2013-01-01

The author traces the origin of social work to the Confucian concept of Great Unity and social organization of traditional Chinese society. While professional social work started in 1921, its development was interrupted in 1952, but the practice of social work never stopped. Social work was revived as a discipline and profession in 1979 and has…

"You must not rely upon the words that very kind and beautiful girls utter, because in that regard, no offence, they all - lie":venereal diseases as a motive of Fran Gundrum's (1856-1919) work on sexual hygiene.

PubMed

Kuhar, Martin; Fatović-Ferenčić, Stella

2013-01-01

Until the works of Fran Gundrum, there was no comprehensive analysis of sexuality in Croatia. In this article, we investigate the background of Gundrum's book Sexual Health Care, the first book on sexual hygiene in Croatia. We analyzed the motivational effect venereal diseases had on writing the book, as well as the metaphoric language he used to conceptualize them. Venereal diseases are presented in his work as a consequence of irresponsible sexual behavior, and are interpreted using the analogy of natural state of English political philosopher Thomas Hobbes. All aspects of his suggestions for suppression of venereal diseases were colored by giving priority to social over individual well-being. Tradition and modernity intermix in his work, shaping him as the pioneer of sexual hygiene on our territory in the times when questions about heredity and survival of the nation started to forcefully shape public health policies.

[Training of medical practitioners of Russian Federation for dealing with dangerous infections in Stavropol Institute for plague control and for working under the conditions of the emergency situation].

PubMed

Efremenko, V I; Kal'noĭ, S M; Shvetsova, N M; Bogdanov, I K; Grizhebovskiĭ, G M; Briukhanova, G D; Onatskaia, T G

2001-01-01

There are no doubts at present concerning the necessity of training medical practitioners in Russia for dealing with specially dangerous infections and for work under the conditions of emergency situations. From the day this institute was founded the training of the corresponding personnel was started: first physicians, then biologists and other specialists, including medical assistants and technicians. Additional programs for training specialists were developed, the State License for conducting the course of special post-diploma training was obtained. Research works on improving the methods of the indication and rapid diagnostics of the causative agents of dangerous infections, reflected in training programs for specialists and practically used in the process of the realization of antiepidemic measures in the zones of emergency situations, were carried out. In training the students the experience of the work of the institute on ensuring the epidemiological safety of the population under the conditions of different emergency situations was taken into consideration.

Near Earth Object (NEO) Mitigation Options Using Exploration Technologies

NASA Technical Reports Server (NTRS)

Arnold William; Baysinger, Mike; Crane, Tracie; Capizzo, Pete; Sutherlin, Steven; Dankanich, John; Woodcock, Gordon; Edlin, George; Rushing, Johnny; Fabisinski, Leo;

About various definitions of life.

PubMed

Luisi, P L

1998-10-01

The old question of a definition of minimal life is taken up again at the aim of providing a forum for an updated discussion. Briefly discussed are the reasons why such an attempt has previously encountered scepticism, and why such an attempt should be renewed at this stage of the inquiry on the origin of life. Then some of the definitions of life presently used are cited and briefly discussed, starting with the definition adopted by NASA as a general working definition. It is shown that this is too limited if one wishes to provide a broad encompassing definition, and some extensions of it are presented and discussed. Finally it is shown how the different definitions of life reflect the main schools of thought that presently dominate the field on the origin of life.

27. VIEW TO SOUTHWEST AT START OF POWERHOUSE RECONSTRUCTION: Photocopy ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

27. VIEW TO SOUTHWEST AT START OF POWERHOUSE RECONSTRUCTION: Photocopy of December 1906 photograph showing the start of reconstruction work on the powerhouse and car barn. View towards the southwest corner of the building. Note the winding sheaves under a partially completed protective shed on the left of the photograph. Also visible are the tension sheaves, and behind them the batteries of elephant boilers arrayed along the west wall of the building. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

26 CFR 301.7701(b)-4 - Residency time periods.

Code of Federal Regulations, 2010 CFR

2010-04-01

... for tax purposes on the alien's residency starting date. The residency starting date for an alien who... present in the United States. The residency starting date for an alien who meets the lawful permanent... permanent resident. The residency starting date for an alien who satisfies both the substantial presence...

A Survey of Factors Influencing High School Start Times

ERIC Educational Resources Information Center

Wolfson, Amy R.; Carskadon, Mary A.

2005-01-01

The present study surveyed high school personnel regarding high school start times, factors influencing school start times, and decision making around school schedules. Surveys were analyzed from 345 secondary schools selected at random from the National Center for Educational Statistics database. Factors affecting reported start times included…

Modeling of Transient Flow Mixing of Streams Injected into a Mixing Chamber

NASA Technical Reports Server (NTRS)

Voytovych, Dmytro M.; Merkle, Charles L.; Lucht, Robert P.; Hulka, James R.; Jones, Gregg W.

2006-01-01

Ignition is recognized as one the critical drivers in the reliability of multiple-start rocket engines. Residual combustion products from previous engine operation can condense on valves and related structures thereby creating difficulties for subsequent starting procedures. Alternative ignition methods that require fewer valves can mitigate the valve reliability problem, but require improved understanding of the spatial and temporal propellant distribution in the pre-ignition chamber. Current design tools based mainly on one-dimensional analysis and empirical models cannot predict local details of the injection and ignition processes. The goal of this work is to evaluate the capability of the modern computational fluid dynamics (CFD) tools in predicting the transient flow mixing in pre-ignition environment by comparing the results with the experimental data. This study is a part of a program to improve analytical methods and methodologies to analyze reliability and durability of combustion devices. In the present paper we describe a series of detailed computational simulations of the unsteady mixing events as the cold propellants are first introduced into the chamber as a first step in providing this necessary environmental description. The present computational modeling represents a complement to parallel experimental simulations' and includes comparisons with experimental results from that effort. A large number of rocket engine ignition studies has been previously reported. Here we limit our discussion to the work discussed in Refs. 2, 3 and 4 which is both similar to and different from the present approach. The similarities arise from the fact that both efforts involve detailed experimental/computational simulations of the ignition problem. The differences arise from the underlying philosophy of the two endeavors. The approach in Refs. 2 to 4 is a classical ignition study in which the focus is on the response of a propellant mixture to an ignition source, with emphasis on the level of energy needed for ignition and the ensuing flame propagation issues. Our focus in the present paper is on identifying the unsteady mixing processes that provide the propellant mixture in which the ignition source is to be placed. In particular, we wish to characterize the spatial and temporal mixture distribution with a view toward identifying preferred spatial and temporal locations for the ignition source. As such, the present work is limited to cold flow (pre-ignition) conditions

Autologous chondrocyte implantation (ACI) for cartilage defects of the knee: A guideline by the working group "Clinical Tissue Regeneration" of the German Society of Orthopaedics and Trauma (DGOU).

PubMed

Niemeyer, P; Albrecht, D; Andereya, S; Angele, P; Ateschrang, A; Aurich, M; Baumann, M; Bosch, U; Erggelet, C; Fickert, S; Gebhard, H; Gelse, K; Günther, D; Hoburg, A; Kasten, P; Kolombe, T; Madry, H; Marlovits, S; Meenen, N M; Müller, P E; Nöth, U; Petersen, J P; Pietschmann, M; Richter, W; Rolauffs, B; Rhunau, K; Schewe, B; Steinert, A; Steinwachs, M R; Welsch, G H; Zinser, W; Fritz, J

2016-06-01

Autologous chondrocyte implantation (ACI) is an established and well-accepted procedure for the treatment of localised full-thickness cartilage defects of the knee. The present review of the working group "Clinical Tissue Regeneration" of the German Society of Orthopaedics and Trauma (DGOU) describes the biology and function of healthy articular cartilage, the present state of knowledge concerning therapeutic consequences of primary cartilage lesions and the suitable indication for ACI. Based on best available scientific evidence, an indication for ACI is given for symptomatic cartilage defects starting from defect sizes of more than three to four square centimetres; in the case of young and active sports patients at 2.5cm(2), while advanced degenerative joint disease needs to be considered as the most important contraindication. The present review gives a concise overview on important scientific background and the results of clinical studies and discusses the advantages and disadvantages of ACI. Non-systematic Review. Copyright © 2016 Elsevier B.V. All rights reserved.

PNP PIN bipolar phototransistors for high-speed applications built in a 180 nm CMOS process.

PubMed

Kostov, P; Gaberl, W; Hofbauer, M; Zimmermann, H

2012-08-01

This work reports on three speed optimized pnp bipolar phototransistors build in a standard 180 nm CMOS process using a special starting wafer. The starting wafer consists of a low doped p epitaxial layer on top of the p substrate. This low doped p epitaxial layer leads to a thick space-charge region between base and collector and thus to a high -3 dB bandwidth at low collector-emitter voltages. For a further increase of the bandwidth the presented phototransistors were designed with small emitter areas resulting in a small base-emitter capacitance. The three presented phototransistors were implemented in sizes of 40 × 40 μm 2 and 100 × 100 μm 2 . Optical DC and AC measurements at 410 nm, 675 nm and 850 nm were done for phototransistor characterization. Due to the speed optimized design and the layer structure of the phototransistors, bandwidths up to 76.9 MHz and dynamic responsivities up to 2.89 A/W were achieved. Furthermore simulations of the electric field strength and space-charge regions were done.

Local health rules and building regulations: a survey on local hygiene and building regulations in Italian municipalities.

PubMed

Gola, Marco; Signorelli, Carlo; Buffoli, Maddalena; Rebecchi, Andrea; Capolongo, Stefano

2017-01-01

WHO has highlighted the need to strengthen the relationship between health and built environment factors, such as inappropriate housing conditions. Local Health Rules (LHRs) and Building Regulations (BRs) are tools which provide safety and building hygiene in construction practices. Currently the Italian Government is considering to establish a National Building Regulation and, related to the following purpose, this paper presents a survey on the status of adoption and updating of LHRs and BRs in Italian municipalities. The current Italian state of LHRs, BRs and Municipal Development Plans (MDPs) have been examined by a survey considering a sample of about 550 cities, with different demo graphic and geographic features, starting from the previous research work by Signorelli et al. (1999). The analysis underlines a serious shortage of updated LHRs, especially in small and medium-sized municipalities whereas BRs and MDPs are widespread. Only 30% of them are previously approved and validated by Local Health Authorities. Starting from a survey, the present scenario of Building Regulations requires the introduction of further performance guidelines instead of normative ones and, therefore, the current actions to give rise to a National Building Regulation could be integrated by building hygiene contents of LHRs.

An Investigation Into: I) Active Flow Control for Cold-Start Performance Enhancement of a Pump-Assisted, Capillary-Driven, Two-Phase Cooling Loop II) Surface Tension of n-Pentanol + Water, a Self-Rewetting Working Fluid, From 25 °C to 85 °C

NASA Astrophysics Data System (ADS)

Bejarano, Roberto Villa

Cold-start performance enhancement of a pump-assisted, capillary-driven, two-phase cooling loop was attained using proportional integral and fuzzy logic controls to manage the boiling condition inside the evaporator. The surface tension of aqueous solutions of n-Pentanol, a self-rewetting fluid, was also investigated for enhancing heat transfer performance of capillary driven (passive) thermal devices was also studied. A proportional-integral control algorithm was used to regulate the boiling condition (from pool boiling to thin-film boiling) and backpressure in the evaporator during cold-start and low heat input conditions. Active flow control improved the thermal resistance at low heat inputs by 50% compared to the baseline (constant flow rate) case, while realizing a total pumping power savings of 56%. Temperature overshoot at start-up was mitigated combining fuzzy-logic with a proportional-integral controller. A constant evaporator surface temperature of 60°C with a variation of +/-8°C during start-up was attained with evaporator thermal resistances as low as 0.10 cm2--K/W. The surface tension of aqueous solutions of n-Pentanol, a self-rewetting working fluid, as a function of concentration and temperature were also investigated. Self-rewetting working fluids are promising in two-phase heat transfer applications because they have the ability to passively drive additional working fluid towards the heated surface; thereby increasing the dryout limitations of the thermal device. Very little data is available in literature regarding the surface tension of these fluids due to the complexity involved in fluid handling, heating, and experimentation. Careful experiments were performed to investigate the surface tension of n-Pentanol + water. The concentration and temperature range investigated were from 0.25%wt. to1.8%wt and 25°C to 85°C, respectively.

Impact of the post-2008 economic crisis on harmful drinking in the Dutch working-age population.

PubMed

de Goeij, Moniek C M; van der Wouden, Bregje; Bruggink, Jan-Willem; Otten, Ferdy; Kunst, Anton E

2016-04-01

Studies on the impact of economic crises on alcohol consumption have yielded ambiguous results. Therefore, we studied changes in trends in harmful drinking among Dutch working-age men and women after the post-2008 economic crisis started. We also assessed whether these trend changes differed across age and socioeconomic groups. We used repeated cross-sectional data from the Dutch Health Interview Survey conducted by Statistics Netherlands. Representative samples were independently drawn each month (January, 2004-December, 2013). Our working-age study population consisted of 20,140 men and 22,394 women aged 25-64. For men and women, episodic drinking was defined as drinking ≥6 glasses on one day at least once a week. Chronic drinking was defined as consuming ≥14 glasses/week for women and ≥21 for men. Segmented logistic regression was used to model trend changes separately in men and women. A downward trend in episodic and chronic drinking before the crisis slowed down after the crisis started. For episodic drinking, we observed a ceasing-of-decline among men aged 35-44/45-54/55-64, compared to a start-of-decline among those aged 25-34 (p-interaction=0.042/0.020/0.047). For chronic drinking, we observed a ceasing-of-decline among women (p=0.023) but not among men in general (p=0.238). Among men, a ceasing-of-decline did occur in those with a high income, but a start-of-decline was found among those with a low income (p-interaction=0.049). In some subgroups of the Dutch working-age population, the downward trend in episodic and chronic drinking ceased after the crisis started. This suggests that the crisis had an upward effect on harmful drinking, but only in specific populations. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

Pushing for Part Time.

ERIC Educational Resources Information Center

Geber, Beverly

1987-01-01

More employees are choosing to work part time. Although this trend started because of working women, some men are choosing part-time positions. Part-time employees forfeit salary and promotion potential, yet most feel the trade is fair and that they are more productive during their working hours. (CH)

[The socioeconomic and demographic characterization of children and adolescents who study and work outside their home].

PubMed

Silveira, Renata Cristina da Penha; Ribeiro, Luiz Cláudio; Secco, Iara Aparecida de Oliveira; Robazzi, Maria Lúcia do Carmo Cruz

2012-04-01

The objective of this study was to identify the socioeconomic and demographic characteristics of children and adolescents who study and work outside their home. This non-experimental, correlational, cross-sectional study was performed using questionnaires applied to primary education students, enrolled in public schools in Ribeirão Preto (Brazil). Two schools were selected through a draw. Data analysis was performed using Statistical Package for Social Sciences, version 14.0. Of the 133 students who answered the questionnaire, 36 (27.7%) reported working outside their home, 20.6% were between 11 and 13 years of age, and 66.7% were male (p=0.000) and had started working early to help with the family income (p=0.003). The salary they received helped comprise the family income, and it was found that as the family income increased, the need for the youngsters to work was reduced. It was found that many factors contribute to these subjects' early start at work, including family size, structure and poverty.

An overview on the Space Weather in Latin America: from Space Research to Space Weather and its Forecast

NASA Astrophysics Data System (ADS)

De Nardin, C. M.; Gonzalez-Esparza, A.; Dasso, S.

2015-12-01

We present an overview on the Space Weather in Latin America, highlighting the main findings from our review the recent advances in the space science investigations in Latin America focusing in the solar-terrestrial interactions, modernly named space weather, which leaded to the creation of forecast centers. Despite recognizing advances in the space research over the whole Latin America, this review is restricted to the evolution observed in three countries (Argentina, Brazil and Mexico) only, due to the fact that these countries have recently developed operational center for monitoring the space weather. The work starts with briefly mentioning the first groups that started the space science in Latin America. The current status and research interest of such groups are then described together with the most referenced works and the challenges for the next decade to solve space weather puzzles. A small inventory of the networks and collaborations being built is also described. Finally, the decision process for spinning off the space weather prediction centers from the space science groups is reported with an interpretation of the reason/opportunities that lead to it. Lastly, the constraints for the progress in the space weather monitoring, research, and forecast are listed with recommendations to overcome them.

7 CFR 25.403. - Ongoing 2-year work plan requirement.

Code of Federal Regulations, 2010 CFR

2010-01-01

... the start of the applicable 2-year period. (c) The 2-year work plan must include the following... Federal, State and local governments, non-profit organizations, foundations, private businesses, and any...

A Data Scientist's Guide to Start-Ups.

PubMed

Provost, Foster; Webb, Geoffrey I; Bekkerman, Ron; Etzioni, Oren; Fayyad, Usama; Perlich, Claudia

2014-09-01

In August 2013, we held a panel discussion at the KDD 2013 conference in Chicago on the subject of data science, data scientists, and start-ups. KDD is the premier conference on data science research and practice. The panel discussed the pros and cons for top-notch data scientists of the hot data science start-up scene. In this article, we first present background on our panelists. Our four panelists have unquestionable pedigrees in data science and substantial experience with start-ups from multiple perspectives (founders, employees, chief scientists, venture capitalists). For the casual reader, we next present a brief summary of the experts' opinions on eight of the issues the panel discussed. The rest of the article presents a lightly edited transcription of the entire panel discussion.

Characteristics of people who start fires...

Treesearch

John R. Christiansen; William S. Folkman

1971-01-01

Recreationists or city dwellers are usually most often thought of as being responsible for starting forest fires. But a limited study showed that fire starters were more apt to be people who lived near and worked on the National Forests. They were relatively young and undereducated, and had "good reputations" in their communities. Employers held responsible...

Understanding and Achieving Quality in Sure Start Children's Centres: Practitioners' Perspectives

ERIC Educational Resources Information Center

Cottle, Michelle

2011-01-01

This article focuses on some of the issues that shape understandings of professional practice in the rapidly expanding context of children's centres in England. Drawing on data from an ESRC-funded project exploring practitioners' understandings of quality and success, the perspectives of 115 practitioners working in 11 Sure Start Children's…

Towards a sharp-interface volume-of-fluid methodology for modeling evaporation

NASA Astrophysics Data System (ADS)

Pathak, Ashish; Raessi, Mehdi

2017-11-01

In modeling evaporation, the diffuse-interface (one-domain) formulation yields inaccurate results. Recent efforts approaching the problem via a sharp-interface (two-domain) formulation have shown significant improvements. The reasons behind their better performance are discussed in the present work. All available sharp-interface methods, however, exclusively employ the level-set. In the present work, we develop a sharp-interface evaporation model in a volume-of-fluid (VOF) framework in order to leverage its mass-conserving property as well as its ability to handle large topographical changes. We start with a critical review of the assumptions underlying the mathematical equations governing evaporation. For example, it is shown that the assumption of incompressibility can only be applied in special circumstances. The famous D2 law used for benchmarking is valid exclusively to steady-state test problems. Transient is present over significant lifetime of a micron-size droplet. Therefore, a 1D spherical fully transient model is developed to provide a benchmark transient solution. Finally, a 3D Cartesian Navier-Stokes evaporation solver is developed. Some preliminary validation test-cases are presented for static and moving drop evaporation. This material is based upon work supported by the Department of Energy, Office of Energy Efficiency and Renewable Energy and the Department of Defense, Tank and Automotive Research, Development, and Engineering Center, under Award Number DEEE0007292.

A Neuro-Mechanical Model Explaining the Physiological Role of Fast and Slow Muscle Fibres at Stop and Start of Stepping of an Insect Leg

PubMed Central

Toth, Tibor Istvan; Grabowska, Martyna; Schmidt, Joachim; Büschges, Ansgar; Daun-Gruhn, Silvia

2013-01-01

Stop and start of stepping are two basic actions of the musculo-skeletal system of a leg. Although they are basic phenomena, they require the coordinated activities of the leg muscles. However, little is known of the details of how these activities are generated by the interactions between the local neuronal networks controlling the fast and slow muscle fibres at the individual leg joints. In the present work, we aim at uncovering some of those details using a suitable neuro-mechanical model. It is an extension of the model in the accompanying paper and now includes all three antagonistic muscle pairs of the main joints of an insect leg, together with their dedicated neuronal control, as well as common inhibitory motoneurons and the residual stiffness of the slow muscles. This model enabled us to study putative processes of intra-leg coordination during stop and start of stepping. We also made use of the effects of sensory signals encoding the position and velocity of the leg joints. Where experimental observations are available, the corresponding simulation results are in good agreement with them. Our model makes detailed predictions as to the coordination processes of the individual muscle systems both at stop and start of stepping. In particular, it reveals a possible role of the slow muscle fibres at stop in accelerating the convergence of the leg to its steady-state position. These findings lend our model physiological relevance and can therefore be used to elucidate details of the stop and start of stepping in insects, and perhaps in other animals, too. PMID:24278108

Mathematical modeling and analysis of heat pipe start-up from the frozen state

NASA Technical Reports Server (NTRS)

Jang, Jong Hoon; Faghri, Amir; Chang, Won Soon; Mahefkey, Edward T.

1989-01-01

The start-up process of a frozen heat pipe is described and a complete mathematical model for the start-up of the frozen heat pipe is developed based on the existing experimental data, which is simplified and solved numerically. The two-dimensional transient model for the wall and wick is coupled with the one-dimensional transient model for the vapor flow when vaporization and condensation occur at the interface. A parametric study is performed to examine the effect of the boundary specification at the surface of the outer wall on the successful start-up from the frozen state. For successful start-up, the boundary specification at the outer wall surface must melt the working substance in the condenser before dry-out takes place in the evaporator.

Mathematical modeling and analysis of heat pipe start-up from the frozen state

NASA Technical Reports Server (NTRS)

Jang, J. H.; Faghri, A.; Chang, W. S.; Mahefkey, E. T.

1990-01-01

The start-up process of a frozen heat pipe is described and a complete mathematical model for the start-up of the frozen heat pipe is developed based on the existing experimental data, which is simplified and solved numerically. The two-dimensional transient model for the wall and wick is coupled with the one-dimensional transient model for the vapor flow when vaporization and condensation occur at the interface. A parametric study is performed to examine the effect of the boundary specification at the surface of the outer wall on the successful start-up from the frozen state. For successful start-up, the boundary specification at the outer wall surface must melt the working substance in the condenser before dry-out takes place in the evaporator.

A new technique for presentation of scientific works: video in poster.

PubMed

Bozdag, Ali Dogan

2008-07-01

Presentations at scientific congresses and symposiums can be in two different forms: poster or oral presentation. Each method has some advantages and disadvantages. To combine the advantages of oral and poster presentations, a new presentation type was conceived: "video in poster." The top of the portable digital video display (DVD) player is opened 180 degrees to keep the screen and the body of the DVD player in the same plane. The poster is attached to the DVD player and a window is made in the poster to expose the screen of the DVD player so the screen appears as a picture on the poster. Then this video in poster is fixed to the panel. When the DVD player is turned on, the video presentation of the surgical procedure starts. Several posters were presented at different medical congresses in 2007 using the "video in poster" technique, and they received poster awards. The video in poster combines the advantages of both oral and poster presentations.

History of Romanian Medical Informatics: Learning from the Past to Reshape the Future.

PubMed

Mihalas, George I; Stoicu-Tivadar, Lacramioara

2018-04-22

 The paper presents a review of the history of medical informatics in Romania, starting from the pioneering works, relating the present, and foreseeing the future.  Major milestones of the development of this field have not been simply enumerated, but described within the specific socio-political frame, grasping the entire context over the last four decades in Romania. Two main perspectives have been traced: education and training in medical informatics and implementations in healthcare.  Four distinctive historical periods are identified and the major events of each period are described in a critical manner. The history of the Romanian Society of Medical Informatics is presented in a separate chapter. The last section is dedicated to the present state of the field in Romania.  The history of Romanian Medical Informatics spans many years and is rich in content. The Romanian Society of Medical Informatics is mainly the result of the efforts undertaken by an enthusiastic and sound professional community, trying to continue the tradition, to achieve new goals, and to work as an active member of the international biomedical/health informatics community. Georg Thieme Verlag KG Stuttgart.

What Happens at the Lesson Start?

ERIC Educational Resources Information Center

Saloviita, Timo

2016-01-01

Transitional periods, such as lesson starts, are necessary steps from one activity to another, but they also compete with time for actual learning. The aim of the present study was to replicate a previous pilot study on lesson starts and explore possible disturbances. In total, 130 lesson starts in Finnish basic education in grades 1-9 were…

Starting Strong: Feasibility of an Indicated Prevention Programme during the Transition to Kindergarten

ERIC Educational Resources Information Center

Eisenhower, Abbey; Baker, Bruce L.; Taylor, Heather

2016-01-01

School-based mental health services are a promising context for evidence-based interventions to promote early socio-emotional development, yet implementation presents significant challenges. This paper describes the rationale, content and format of a school-based intervention, Starting Strong in Kindergarten (Starting Strong). Starting Strong is a…

[Work-related stress and burnout in physiotherapists--a literature review].

PubMed

Mikołajewska, Emilia

2014-01-01

Studies of some chronic conditions and some health risk factors in physiotherapists suggest that work-related stress and burn- out may have a significant but underestimated impact on their health status and productivity. This paper presents the author's attempt to review current knowledge of work-related stress and burnout in physiotherapists. This review was aimed at explor- ing the relationship between causes, consequences and ways of prevention of work-related stress and burnout in this occupa- tional group. Searching PubMed, PEDro and Health Source: Nursing/Academic Edition was conducted in July 2014, with no starting date limitation and with specified keywords. The literature on work-related stress and burnout in physiotherapists has investigated their relationship with a large number of causes, consequences, and ways of prevention. Based on the research re- viewed, the conclusion can be drawn that further strategies to increase awareness among the management staff and health profes- sionals about the importance of prevention and stress management are required to decrease the prevalence of aforementioned pathologies. It was stressed that the majority of components of these strategies still require to be confirmed by future studies.

Rapid knowledge assessment (RKA): Assessing students content knowledge through rapid, in class assessment of expertise

NASA Astrophysics Data System (ADS)

O'Connell, Erin

Understanding how students go about problem solving in chemistry lends many possible advantages for interventions in teaching strategies for the college classroom. The work presented here is the development of an in-classroom, real-time, formative instrument to assess student expertise in chemistry with the purpose of developing classroom interventions. The development of appropriate interventions requires the understanding of how students go about starting to solve tasks presented to them, what their mental effort (load on working memory) is, and whether or not their performance was accurate. To measure this, the Rapid Knowledge Assessment (RKA) instrument uses clickers (handheld electronic instruments for submitting answers) as a means of data collection. The classroom data was used to develop an algorithm to deliver student assessment scores, which when correlated to external measure of standardized American Chemical Society (ACS) examinations and class score show a significant relationship between the accuracy of knowledge assessment (p=0.000). Use of eye-tracking technology and student interviews supports the measurements found in the classroom.

Rise time and response measurements on a LiSOCl2 cell

NASA Technical Reports Server (NTRS)

Bastien, Caroline; Lecomte, Eric J.

1992-01-01

Dynamic impedance tests were performed on a 180 Ah LiSOCl2 cell in the frame of a short term work contract awarded by Aerospatiale as part of the Hermes Space Plane development work. These tests consisted of rise time and response measurements. The rise time test was performed to show the ability to deliver 4 KW, in the nominal voltage range (75-115 V), within less than 100 microseconds, and after a period at rest of 13 days. The response measurements test consisted of step response and frequency response tests. The frequency response test was performed to characterize the response of the LiSOCl2 cell to a positive or negative load step of 10 A starting from various currents. The test was performed for various depths of discharge and various temperatures. The test results were used to build a mathematical, electrical model of the LiSOCl2 cell which are also presented. The test description, test results, electrical modelization description, and conclusions are presented.

Coarse-grained sequences for protein folding and design.

PubMed

Brown, Scott; Fawzi, Nicolas J; Head-Gordon, Teresa

2003-09-16

We present the results of sequence design on our off-lattice minimalist model in which no specification of native-state tertiary contacts is needed. We start with a sequence that adopts a target topology and build on it through sequence mutation to produce new sequences that comprise distinct members within a target fold class. In this work, we use the alpha/beta ubiquitin fold class and design two new sequences that, when characterized through folding simulations, reproduce the differences in folding mechanism seen experimentally for proteins L and G. The primary implication of this work is that patterning of hydrophobic and hydrophilic residues is the physical origin for the success of relative contact-order descriptions of folding, and that these physics-based potentials provide a predictive connection between free energy landscapes and amino acid sequence (the original protein folding problem). We present results of the sequence mapping from a 20- to the three-letter code for determining a sequence that folds into the WW domain topology to illustrate future extensions to protein design.

[Autologous chondrocyte implantation (ACI) for cartilage defects of the knee: a guideline by the working group "Tissue Regeneration" of the German Society of Orthopaedic Surgery and Traumatology (DGOU)].

PubMed

Niemeyer, P; Andereya, S; Angele, P; Ateschrang, A; Aurich, M; Baumann, M; Behrens, P; Bosch, U; Erggelet, C; Fickert, S; Fritz, J; Gebhard, H; Gelse, K; Günther, D; Hoburg, A; Kasten, P; Kolombe, T; Madry, H; Marlovits, S; Meenen, N M; Müller, P E; Nöth, U; Petersen, J P; Pietschmann, M; Richter, W; Rolauffs, B; Rhunau, K; Schewe, B; Steinert, A; Steinwachs, M R; Welsch, G H; Zinser, W; Albrecht, D

2013-02-01

Autologous chondrocyte transplantation/implantation (ACT/ACI) is an established and recognised procedure for the treatment of localised full-thickness cartilage defects of the knee. The present review of the working group "Clinical Tissue Regeneration" of the German Society of Orthopaedics and Traumatology (DGOU) describes the biology and function of healthy articular cartilage, the present state of knowledge concerning potential consequences of primary cartilage lesions and the suitable indication for ACI. Based on current evidence, an indication for ACI is given for symptomatic cartilage defects starting from defect sizes of more than 3-4 cm2; in the case of young and active sports patients at 2.5 cm2. Advanced degenerative joint disease is the single most important contraindication. The review gives a concise overview on important scientific background, the results of clinical studies and discusses advantages and disadvantages of ACI. Georg Thieme Verlag KG Stuttgart · New York.

Comparison of conventional vs. modular hydrogen refueling stations and on-site production vs. delivery.

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

Hecht, Ethan S.; Pratt, Joseph William

To meet the needs of public and private stakeholders involved in the development, construction, and operation of hydrogen fueling stations needed to support the widespread roll-out of hydrogen fuel cell electric vehicles, this work presents publicly available station templates and analyses. These ‘Reference Stations’ help reduce the cost and speed the deployment of hydrogen stations by providing a common baseline with which to start a design, enable quick assessment of potential sites for a hydrogen station, identify contributors to poor economics, and suggest areas of research. This work presents layouts, bills of materials, piping and instrumentation diagrams, and detailed analysesmore » of five new station designs. In the near term, delivered hydrogen results in a lower cost of hydrogen compared to on-site production via steam methane reforming or electrolysis, although the on-site production methods have other advantages. Modular station concepts including on-site production can reduce lot sizes from conventional assemble-on-site stations.« less

Coarse-grained sequences for protein folding and design

PubMed Central

Brown, Scott; Fawzi, Nicolas J.; Head-Gordon, Teresa

2003-01-01

We present the results of sequence design on our off-lattice minimalist model in which no specification of native-state tertiary contacts is needed. We start with a sequence that adopts a target topology and build on it through sequence mutation to produce new sequences that comprise distinct members within a target fold class. In this work, we use the α/β ubiquitin fold class and design two new sequences that, when characterized through folding simulations, reproduce the differences in folding mechanism seen experimentally for proteins L and G. The primary implication of this work is that patterning of hydrophobic and hydrophilic residues is the physical origin for the success of relative contact-order descriptions of folding, and that these physics-based potentials provide a predictive connection between free energy landscapes and amino acid sequence (the original protein folding problem). We present results of the sequence mapping from a 20- to the three-letter code for determining a sequence that folds into the WW domain topology to illustrate future extensions to protein design. PMID:12963815

Monitoring start of season in Alaska with GLOBE, AVHRR, and MODIS data

NASA Astrophysics Data System (ADS)

Robin, Jessica; Dubayah, Ralph; Sparrow, Elena; Levine, Elissa

2008-03-01

This work evaluates whether continuity between Advanced Very High Resolution Radiometer (AVHRR) and Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) is achievable for monitoring phenological changes in Alaska. This work also evaluates whether NDVI can detect changes in start of the growing season (SOS) in this region. Six quadratic regression models with NDVI as a function of accumulated growing degree days (AGDD) were developed from 2001 through 2004 AVHRR and MODIS NDVI data sets for urban, mixed, and forested land covers. Model parameters determined NDVI values for start of the observational period as well as peak and length of the growing season. NDVI values for start of the growing season were determined from the model equations and field observations of SOS made by GLOBE students and researchers at University of Alaska Fairbanks. AGDD was computed from daily air temperature. AVHRR and MODIS models were significantly different from one another with differences in the start of the observational season as well as start, peak, and length of the growing season. Furthermore, AGDD for SOS was significantly lower during the 1990s than the 1980s. NDVI values at SOS did not detect this change. There are limitations with using NDVI to monitor phenological changes in these regions because of snow, the large extent of conifers, and clouds, which restrict the composite period. In addition, differing processing and spectral characteristics restrict continuity between AVHRR and MODIS NDVI data sets.

Depressed mood, usual activity level, and continued employment after starting dialysis.

PubMed

Kutner, Nancy G; Zhang, Rebecca; Huang, Yijian; Johansen, Kirsten L

2010-11-01

When patients start dialysis, their employment rate declines and disability benefits are an option. With patient sociodemographic and clinical characteristics including disability income status controlled, we investigated the significance of depressed mood and usual activity level as predictors of patients' continued employment after dialysis start. Incident patients from 296 randomly selected dialysis clinics were surveyed in the Comprehensive Dialysis Study (CDS). Participants provided information about employment status, disability income status, education, depressive symptoms measured by the Patient Health Questionnaire-2 (PHQ-2), and usual activity level/energy expenditure measured by the Human Activity Profile. Age, gender, race, insurance, diabetes, inability to ambulate or transfer, chronic obstructive pulmonary disease, cardiovascular conditions, and hemoglobin and serum albumin values at treatment start were obtained from US Renal Data System files. Dialysis modality was defined at time of interview. Among 585 CDS participants who worked in the previous year, 191 (32.6%) continued working after dialysis start. On the basis of the PHQ-2 cutoff score ≥3, 12.1% of patients who remained employed had possible or probable depression, compared with 32.8% of patients who were no longer employed. In adjusted analyses, higher Human Activity Profile scores were associated with increased likelihood of continued employment, and there was a borderline association between lower PHQ-2 scores and continued employment. Screening and management of depressive symptoms and support for increased activity level may facilitate patients' opportunity for continued employment after dialysis start, along with generally improving their overall quality of life.

Scalar field cosmologies with inverted potentials

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

Boisseau, B.; Giacomini, H.; Polarski, D., E-mail: bruno.boisseau@lmpt.univ-tours.fr, E-mail: hector.giacomini@lmpt.univ-tours.fr, E-mail: david.polarski@umontpellier.fr

Regular bouncing solutions in the framework of a scalar-tensor gravity model were found in a recent work. We reconsider the problem in the Einstein frame (EF) in the present work. Singularities arising at the limit of physical viability of the model in the Jordan frame (JF) are either of the Big Bang or of the Big Crunch type in the EF. As a result we obtain integrable scalar field cosmological models in general relativity (GR) with inverted double-well potentials unbounded from below which possess solutions regular in the future, tending to a de Sitter space, and starting with a Bigmore » Bang. The existence of the two fixed points for the field dynamics at late times found earlier in the JF becomes transparent in the EF.« less

Predicting the Coupling Properties of Axially-Textured Materials.

PubMed

Fuentes-Cobas, Luis E; Muñoz-Romero, Alejandro; Montero-Cabrera, María E; Fuentes-Montero, Luis; Fuentes-Montero, María E

2013-10-30

A description of methods and computer programs for the prediction of "coupling properties" in axially-textured polycrystals is presented. Starting data are the single-crystal properties, texture and stereography. The validity and proper protocols for applying the Voigt, Reuss and Hill approximations to estimate coupling properties effective values is analyzed. Working algorithms for predicting mentioned averages are given. Bunge's symmetrized spherical harmonics expansion of orientation distribution functions, inverse pole figures and (single and polycrystals) physical properties is applied in all stages of the proposed methodology. The established mathematical route has been systematized in a working computer program. The discussion of piezoelectricity in a representative textured ferro-piezoelectric ceramic illustrates the application of the proposed methodology. Polycrystal coupling properties, predicted by the suggested route, are fairly close to experimentally measured ones.

The Smartphone-Based Offline Indoor Location Competition at IPIN 2016: Analysis and Future Work.

PubMed

Torres-Sospedra, Joaquín; Jiménez, Antonio R; Knauth, Stefan; Moreira, Adriano; Beer, Yair; Fetzer, Toni; Ta, Viet-Cuong; Montoliu, Raul; Seco, Fernando; Mendoza-Silva, Germán M; Belmonte, Oscar; Koukofikis, Athanasios; Nicolau, Maria João; Costa, António; Meneses, Filipe; Ebner, Frank; Deinzer, Frank; Vaufreydaz, Dominique; Dao, Trung-Kien; Castelli, Eric

2017-03-10

This paper presents the analysis and discussion of the off-site localization competition track, which took place during the Seventh International Conference on Indoor Positioning and Indoor Navigation (IPIN 2016). Five international teams proposed different strategies for smartphone-based indoor positioning using the same reference data. The competitors were provided with several smartphone-collected signal datasets, some of which were used for training (known trajectories), and others for evaluating (unknown trajectories). The competition permits a coherent evaluation method of the competitors' estimations, where inside information to fine-tune their systems is not offered, and thus provides, in our opinion, a good starting point to introduce a fair comparison between the smartphone-based systems found in the literature. The methodology, experience, feedback from competitors and future working lines are described.

Predicting the Coupling Properties of Axially-Textured Materials

PubMed Central

Fuentes-Cobas, Luis E.; Muñoz-Romero, Alejandro; Montero-Cabrera, María E.; Fuentes-Montero, Luis; Fuentes-Montero, María E.

2013-01-01

A description of methods and computer programs for the prediction of “coupling properties” in axially-textured polycrystals is presented. Starting data are the single-crystal properties, texture and stereography. The validity and proper protocols for applying the Voigt, Reuss and Hill approximations to estimate coupling properties effective values is analyzed. Working algorithms for predicting mentioned averages are given. Bunge’s symmetrized spherical harmonics expansion of orientation distribution functions, inverse pole figures and (single and polycrystals) physical properties is applied in all stages of the proposed methodology. The established mathematical route has been systematized in a working computer program. The discussion of piezoelectricity in a representative textured ferro-piezoelectric ceramic illustrates the application of the proposed methodology. Polycrystal coupling properties, predicted by the suggested route, are fairly close to experimentally measured ones. PMID:28788370

Toward a global approach of biochemistry in hospitals.

PubMed

Boigne, J M; Moisdon, J C; Tonneau, D

1985-01-01

This article summarizes three different presentations delivered at the CRESGE congress by three members of GREBIO, a reflection group about biochemistry; created in the Paris hospitals, this group was concerned with these problems at a time of great technological change. Physicians, biochemists and administrators have been working in GREBIO for 7 years, with the methodological assistance of management from the School of Mines; they used new approaches, and careful investigations on the field and proposed analyses sometimes upsetting but always enriching the questionings. Starting from these results, briefly described, GREBIO proposed the creation of an observatory for biochemistry, that could take into account both the complexity and diversity in the laboratories. It also proposed that current reform in analytical accountancy allow biochemistry to work its own managing tools separately from accountancy purposes.

Middle atmospheric electrodynamics

NASA Technical Reports Server (NTRS)

Kelley, M. C.

1983-01-01

A review is presented of the advances made during the last few years with respect to the study of the electrodynamics in the earth's middle atmosphere. In a report of the experimental work conducted, attention is given to large middle atmospheric electric fields, the downward coupling of high altitude processes into the middle atmosphere, and upward coupling of tropospheric processes into the middle atmosphere. It is pointed out that new developments in tethered balloons and superpressure balloons should greatly increase the measurement duration of earth-ionospheric potential measurements and of stratospheric electric field measurements in the next few years. Theoretical work considered provides an excellent starting point for study of upward coupling of transient and dc electric fields. Hays and Roble (1979) were the first to construct a model which included orographic features as well as the classical thunderstorm generator.

Tintinnina (Ciliophora, Protista) of the North Sea during the spring of 1986

NASA Astrophysics Data System (ADS)

Cordeiro, T. A.; Sassi, R.

1997-08-01

This work is the first of a series in which the distribution patterns and the importance of the Tintinnina in the trophic chain of the North Sea are evaluated. In agreement with Foissner (1994), who stated “Most ecological papers on planktonic protozoans lack reliable identifications and modern nomenclature...”, the series will start with the results of a taxonomic revision. Illustrations and brief descriptions of the 23 Tintinnina species found in this analysis are given, as well as comments about species identification. Differences between the present results and the previous work of Lindley (1975) can indicate some changes in the species structure. A higher number of species was found than that found by Lindley (1975) in seasonal samplings. *** DIRECT SUPPORT *** A03B6035 00003

Engine management during NTRE start up

NASA Technical Reports Server (NTRS)

Bulman, Mel; Saltzman, Dave

1993-01-01

The topics are presented in viewgraph form and include the following: total engine system management critical to successful nuclear thermal rocket engine (NTRE) start up; NERVA type engine start windows; reactor power control; heterogeneous reactor cooling; propellant feed system dynamics; integrated NTRE start sequence; moderator cooling loop and efficient NTRE starting; analytical simulation and low risk engine development; accurate simulation through dynamic coupling of physical processes; and integrated NTRE and mission performance.

Current Status of Efforts on Standardizing Magnetic Resonance Imaging of Juvenile Idiopathic Arthritis: Report from the OMERACT MRI in JIA Working Group and Health-e-Child.

PubMed

Nusman, Charlotte M; Ording Muller, Lil-Sofie; Hemke, Robert; Doria, Andrea S; Avenarius, Derk; Tzaribachev, Nikolay; Malattia, Clara; van Rossum, Marion A J; Maas, Mario; Rosendahl, Karen

2016-01-01

To report on the progress of an ongoing research collaboration on magnetic resonance imaging (MRI) in juvenile idiopathic arthritis (JIA) and describe the proceedings of a meeting, held prior to Outcome Measures in Rheumatology (OMERACT) 12, bringing together the OMERACT MRI in JIA working group and the Health-e-Child radiology group. The goal of the meeting was to establish agreement on scoring definitions, locations, and scales for the assessment of MRI of patients with JIA for both large and small joints. The collaborative work process included premeeting surveys, presentations, group discussions, consensus on scoring methods, pilot scoring, conjoint review, and discussion of a future research agenda. The meeting resulted in preliminary statements on the MR imaging protocol of the JIA knee and wrist and determination of the starting point for development of MRI scoring systems based on previous studies. It was also considered important to be descriptive rather than explanatory in the assessment of MRI in JIA (e.g., "thickening" instead of "hypertrophy"). Further, the group agreed that well-designed calibration sessions were warranted before any future scoring exercises were conducted. The combined efforts of the OMERACT MRI in JIA working group and Health-e-Child included the assessment of currently available material in the literature and determination of the basis from which to start the development of MRI scoring systems for both the knee and wrist. The future research agenda for the knee and wrist will include establishment of MRI scoring systems, an atlas of MR imaging in healthy children, and MRI protocol requisites.

[The Relationship Between Burnout Symptoms and Work Satisfaction Among Child Welfare Workers in Residential Care].

PubMed

Steinlin, Célia; Dölitzsch, Claudia; Fischer, Sophia; Schmeck, Klaus; Fegert, Jörg M; Schmid, Marc

2016-01-01

Working in residential care is associated with high demands and high stress. As a result, employees may develop symptoms of burnout. These symptoms lead to absence from work and have a negative effect on the continuity and quality of the residential care. Until now, little is known about burnout risks in child welfare workers, although children and adolescents are especially dependent on continuous relationships and healthy caregivers. A better understanding of the relationship between burnout symptoms and work satisfaction may help to identify starting points for prevention and intervention. The present study assessed symptoms of burnout in a sample of 319 social education workers in residential care in Switzerland using the burnout-screening-scales (BOSS). Work satisfaction was assessed with a newly developed questionnaire based on concepts of trauma-sensitive care. The questionnaire was tested for reliability and factorial validity in the present study. In order to estimate the relationship between burnout symptoms and work satisfaction, correlations and relative risks were calculated. Almost one fifth (18 %) of the sample showed a risk of burnout. The principal component analysis of the questionnaire on work satisfaction revealed four factors: support by superiors, participation and transparency; communication and support within the team; gratification in the work; and institutional structures and resources. All four factors as well as the total score showed significant correlations with burnout symptoms. Among employees with a comparably lower work satisfaction, the risk of burnout was 5.4 times higher than among employees with a comparably higher work satisfaction. It is discussed how work satisfaction could be promoted and how, as a result, the quality and continuity of care for the children and adolescents could be improved.

Global trend according to estimated number of occupational accidents and fatal work-related diseases at region and country level.

PubMed

Hämäläinen, Päivi; Leena Saarela, Kaija; Takala, Jukka

2009-01-01

Although occupational accidents and work-related diseases have been of interest for a long time, due to lack of proper recording and notification systems the official numbers of occupational accidents and work-related diseases are missing for many countries. Presently, the demand for effectiveness and an interest in the economic aspects of accidents have increased prevention activities at company and country levels. Occupational accident data of selected countries and of World Health Organization regional divisions together with the global burden of disease were used in estimating global occupational accidents and fatal work-related diseases. The trend of global occupational accidents and work-related diseases is presented at region and country levels. The years 1998, 2001, and 2003 are compared in the case of occupational accidents and the years 2000 and 2002 in the case of work-related diseases. The total number of occupational accidents and fatal work-related diseases has increased, but the fatality rates per 100,000 workers have decreased. There were almost 360,000 fatal occupational accidents in 2003 and almost 2 million fatal work-related diseases in 2002. Every day more than 960,000 workers get hurt because of accidents. Each day 5,330 people die because of work-related diseases. Information on occupational accidents and work-related diseases is needed so that countries may understand better the importance of occupational health and safety at country and company level. Especially companies in developing countries are not familiar with occupational safety and health. Statistical data is essential for accident prevention; it is a starting point for the safety work.

Effect of treatment with natalizumab on ability to work in people with multiple sclerosis: productivity gain based on direct measurement of work capacity before and after 1 year of treatment.

PubMed

Olofsson, Sara; Wickström, Anne; Häger Glenngård, Anna; Persson, Ulf; Svenningsson, Anders

2011-10-01

Sweden is a high endemic region for multiple sclerosis (MS), a neurologic disorder characterized by repeated inflammatory episodes affecting the CNS. The disease has its peak age of onset at approximately 30 years and affects women twice as often as men. The young age of onset makes MS one of the major causes of reduced capacity to work due to neurologic disease in Western society. Natalizumab (Tysabri®) is among the new generation of biologic drugs for the treatment of MS. Clinical studies have demonstrated that natalizumab is an effective treatment for preventing relapses and inflammatory activity. The aim of the study was to estimate the monetary value of treatment with natalizumab on the ability to work in patients with MS in Sweden, based on a direct measurement of weekly hours worked before and after 1 year of treatment with natalizumab. A sample of patients, consisting of all patients who had started treatment with natalizumab during the period June 2007-May 2008, was identified through the Swedish Multiple Sclerosis Register (SMSreg). Data about sex, age, disease severity, and disease duration were collected from the register. Data about type of work and work capacity (number of hours worked per week) were collected retrospectively through a postal questionnaire. The average hours worked per week was estimated at baseline (2 weeks before treatment started) and at follow-up (50 weeks after treatment started), and the change was assigned an economic value using the human capital approach. This study showed that after 50 weeks of treatment with natalizumab, people with MS increased their productivity by 3.3 hours per week on average (p < 0.01), which corresponded to an economic value of &U20AC;3216 per person per year (year 2007 values). A shorter duration of illness or being 25-35 years old was significantly associated with a greater productivity gain (p = 0.025 and p = 0.002, respectively). A shorter duration of illness and a lower age at the start of treatment were significantly associated with a greater productivity gain after 50 weeks of treatment with natalizumab, which indicates that it is more beneficial to initiate efficient therapy early in patients with MS.

Carrier tests to assess the effective sporicidal concentration of a liquid chemical disinfectant for a sanitization program.

PubMed

Ceccanti, Stefano; Giampieri, Simona; Burgalassi, Susi

2011-01-01

The aim of the present investigation was to evaluate the microbial efficacy against highly resistant bacterial spores on different substrates using the lowest effective concentration of a market liquid sporicide based on peracetic acid. The validation was carried out following modified European regulatory agencies procedures or test methods and USP guidelines, employing carriers of materials usually treated with the sporicidal solution and present in grade A cleanrooms and spores of four different microorganisms: Bacillus subtilis and Clostridium sporogenes, both from the ATCC collection, and Bacillus cereus and Bacillus sphaericus as environmental isolates. A statistical evaluation of data was made to estimate the variance for different study conditions. The experiments highlighted that 70% suitable dilution of the ready-to-use peracetic acid solution was effective in both clean and dirty conditions, showing at least 2 log spore reduction after treatment. To obtain effective sporicidal action on the surfaces in cleanrooms it is sufficient to use a sporicidal solution with a ready-to-use concentration of 70% while ensuring a contact time of 10 min. In any case, the reduction of sporicide concentration ensures a high degree of disinfection and provides a consumption savings. Wide-spectrum disinfectants are used in the pharmaceutical industry for the decontamination of work surfaces and equipment, but these products have some degree of toxicity for operators. This work arises from the needs of pharmaceutical companies to find the lowest effective concentration of sanitizers in order to reduce toxicity to personnel. The sanitizer used in the study was a market liquid sporicide based on peracetic acid. When we started our work no similar studies were reported in the literature, so we took European regulatory agencies and USP guidelines as a starting point, employing carriers of hard, non-porous materials usually treated with the sporicidal solution and present in sterile rooms and spores of four different microorganisms. The experiments highlighted that it is sufficient to use a 70% sporicidal solution concentration with a contact time of 10 min to reduce the number of spores to acceptable values for medicinal production. The reduction of sporicide concentration both ensures a high degree of disinfection and provides a safer working environment and consumption savings.

Using the Git Software Tool on the Peregrine System | High-Performance

Science.gov Websites

branch workflow. Create a local branch called "experimental" based on the current master... git branch experimental Use your branch (start working on that experimental branch....) git checkout experimental git pull origin experimental # work, work, work, commit.... Send local branch to the repo git push

48 CFR 2052.235-71 - Safety, health, and fire protection.

Code of Federal Regulations, 2010 CFR

2010-10-01

... performance of the work under this contract to protect the health and safety of its employees and of members... hazards to life and property. The contractor shall comply with all applicable health, safety, and fire... an order stopping all or any part of the work. Thereafter, a start work order for resumption of work...

Orbital transfer vehicle oxygen turbopump technology. Volume 3: Hot oxygen testing

NASA Technical Reports Server (NTRS)

Urke, Robert L.

1992-01-01

This report covers the work done in preparation for a liquid oxygen rocket engine turbopump test utilizing high pressure hot oxygen gas for the turbine drive. The turbopump (TPA) is designed to operate with 400 F oxygen turbine drive gas. The goal of this test program was to demonstrate the successful operation of the TPA under simulated engine conditions including the hot oxygen turbine drive. This testing follows a highly successful series of tests pumping liquid oxygen with gaseous nitrogen as the turbine drive gas. That testing included starting of the TPA with no assist to the hydrostatic bearing. The bearing start entailed a rubbing start until the pump generated enough pressure to support the bearing. The articulating, self-centering hydrostatic bearing exhibited no bearing load or stability problems. The TPA was refurbished for the hot gas drive tests and facility work was begun, but unfortunately funding cuts prohibited the actual testing.

Model-based development of low-level control strategies for transient operation of solid oxide fuel cell systems

NASA Astrophysics Data System (ADS)

Sorrentino, Marco; Pianese, Cesare

The exploitation of an SOFC-system model to define and test control and energy management strategies is presented. Such a work is motivated by the increasing interest paid to SOFC technology by industries and governments due to its highly appealing potentialities in terms of energy savings, fuel flexibility, cogeneration, low-pollution and low-noise operation. The core part of the model is the SOFC stack, surrounded by a number of auxiliary devices, i.e. air compressor, regulating pressure valves, heat exchangers, pre-reformer and post-burner. Due to the slow thermal dynamics of SOFCs, a set of three lumped-capacity models describes the dynamic response of fuel cell and heat exchangers to any operation change. The dynamic model was used to develop low-level control strategies aimed at guaranteeing targeted performance while keeping stack temperature derivative within safe limits to reduce stack degradation due to thermal stresses. Control strategies for both cold-start and warmed-up operations were implemented by combining feedforward and feedback approaches. Particularly, the main cold-start control action relies on the precise regulation of methane flow towards anode and post-burner via by-pass valves; this strategy is combined with a cathode air-flow adjustment to have a tight control of both stack temperature gradient and warm-up time. Results are presented to show the potentialities of the proposed model-based approach to: (i) serve as a support to control strategies development and (ii) solve the trade-off between fast SOFC cold-start and avoidance of thermal-stress caused damages.

Holding on

ERIC Educational Resources Information Center

Thaxton, Terry Ann

2011-01-01

In this article, the author takes a multidimensional and personal look at creative writing work in an assisted living facility. The people she works with at the facility have memory loss. She shares her experience working with these people and describes a storytelling workshop that was modeled after Timeslips, a program started by Anne Basting at…

A study of the Civic Tower in Ravenna as an example of medieval towers' preservation problems

NASA Astrophysics Data System (ADS)

Bruni, Stefania; Maino, Giuseppe; Marrocchino, Elena; Vaccaro, Carmela; Volpe, Lisa

2013-03-01

Structuralstabilityis a major item when considering very high masonry buildings made of stones, bricks, etc., that can start sudden structural failures and collapses, often without any obvious signs of warning. A famous example is the collapse of the belfry of the Basilica of San Marco in Venice --the implementation of it began in the ninth century-- which took place in July 1902 a few days after the appearanceof a fissure. This paper discusses the scientific investigation performed on the Torre Civica (Civic Tower) in Ravenna (North-East Italy), in order to characterize its constituent materials, namely bricks and mortar. All this information and relevant data merge in a multimedia database which will help to design appropriate conservation and restoration works, mainly concerning the reconstruction of the apical part of the tower, that was foreshortened ten years ago for safety reasons, starting from the original materials catalogued and preserved up to the present day.

Effects of dispense equipment sequence on process start-up defects

NASA Astrophysics Data System (ADS)

Brakensiek, Nick; Sevegney, Michael

2013-03-01

Photofluid dispense systems within coater/developer tools have been designed with the intent to minimize cost of ownership to the end user. Waste and defect minimization, dispense quality and repeatability, and ease of use are all desired characteristics. One notable change within commercially available systems is the sequence in which process fluid encounters dispense pump and filtration elements. Traditionally, systems adopted a pump-first sequence, where fluid is "pushed through" a point-of-use filter just prior to dispensing on the wafer. Recently, systems configured in a pump-last scheme have become available, where fluid is "pulled through" the filter, into the pump, and then is subsequently dispensed. The present work constitutes a comparative evaluation of the two equipment sequences with regard to the aforementioned characteristics that impact cost of ownership. Additionally, removal rating and surface chemistry (i.e., hydrophilicity) of the point-of-use filter are varied in order to evaluate their influence on system start-up and defects.

Status and future of the 3D MAFIA group of codes

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

Ebeling, F.; Klatt, R.; Krawzcyk, F.

1988-12-01

The group of fully three dimensional computer codes for solving Maxwell's equations for a wide range of applications, MAFIA, is already well established. Extensive comparisons with measurements have demonstrated the accuracy of the computations. A large numer of components have been designed for accelerators, such as kicker magnets, non cyclindrical cavities, ferrite loaded cavities, vacuum chambers with slots and transitions, etc. The latest additions to the system include a new static solver that can calculate 3D magneto- and electrostatic fields, and a self consistent version of the 2D-BCI that solves the field equations and the equations of motion in parallel.more » Work on new eddy current modules has started, which will allow treatment of laminated and/or solid iron cores excited by low frequency currents. Based on our experience with the present releases 1 and 2, we have started a complete revision of the whole user interface and data structure, which will make the codes even more user-friendly and flexible.« less

Inverse identification of unknown finite-duration air pollutant release from a point source in urban environment

NASA Astrophysics Data System (ADS)

Kovalets, Ivan V.; Efthimiou, George C.; Andronopoulos, Spyros; Venetsanos, Alexander G.; Argyropoulos, Christos D.; Kakosimos, Konstantinos E.

2018-05-01

In this work, we present an inverse computational method for the identification of the location, start time, duration and quantity of emitted substance of an unknown air pollution source of finite time duration in an urban environment. We considered a problem of transient pollutant dispersion under stationary meteorological fields, which is a reasonable assumption for the assimilation of available concentration measurements within 1 h from the start of an incident. We optimized the calculation of the source-receptor function by developing a method which requires integrating as many backward adjoint equations as the available measurement stations. This resulted in high numerical efficiency of the method. The source parameters are computed by maximizing the correlation function of the simulated and observed concentrations. The method has been integrated into the CFD code ADREA-HF and it has been tested successfully by performing a series of source inversion runs using the data of 200 individual realizations of puff releases, previously generated in a wind tunnel experiment.

Plasma motor generator system

NASA Technical Reports Server (NTRS)

Hite, Gerald E.

1987-01-01

The significant potential advantages of a plasma motor generator system over conventional systems for the generation of electrical power and propulsion for spacecraft in low Earth orbits warrants its further investigation. The two main components of such a system are a long insulated wire and the plasma generating hollow cathodes needed to maintain electrical contact with the ionosphere. Results of preliminary theoretical and experimental investigations of this system are presented. The theoretical work involved the equilibrium configurations of the wire and the nature of small oscillation about these equilibrium positions. A particularly interesting result was that two different configurations are allowed when the current is above a critical value. Experimental investigations were made of the optimal starting and running conditions for the proposed, low current hollow cathodes. Although optimal ranges of temperature, argon pressure and discharge voltage were identified, start up became progressively more difficult. This supposed depletion or contamination of the emissive surface could be countered by the addition of new emissive material.

The Effects of Head Start Health Services: Executive Summary of the Head Start Health Evaluation.

ERIC Educational Resources Information Center

Fosburg, Linda B.; And Others

This report summarizes findings of an evaluation of Head Start health services. Chapter one presents an overview of the background of the evaluation project. Chapter two highlights findings for the major evaluation questions. These questions focus specifically on children's health status prior to entry into Head Start, health services subsequently…

JumpStart III Final Report.

ERIC Educational Resources Information Center

Cohen, Arthur M.; Brawer, Florence B.; Kozeracki, Carol A.

This final report for the JumpStart III program presents a summary of the entrepreneurship training programs developed by each of the four JumpStart III partners selected in March 1997. Grants for the colleges totaled $354,546 over 2 years. The Jumpstart funding has been only a starting point for these and the other 12 Jumpstart partners in…

Fractal dimension and fuzzy logic systems for broken rotor bar detection in induction motors at start-up and steady-state regimes

NASA Astrophysics Data System (ADS)

Amezquita-Sanchez, Juan P.; Valtierra-Rodriguez, Martin; Perez-Ramirez, Carlos A.; Camarena-Martinez, David; Garcia-Perez, Arturo; Romero-Troncoso, Rene J.

2017-07-01

Squirrel-cage induction motors (SCIMs) are key machines in many industrial applications. In this regard, the monitoring of their operating condition aiming at avoiding damage and reducing economical losses has become a demanding task for industry. In the literature, several techniques and methodologies to detect faults that affect the integrity and performance of SCIMs have been proposed. However, they have only been focused on analyzing either the start-up transient or the steady-state operation regimes, two common operating scenarios in real practice. In this work, a novel methodology for broken rotor bar (BRB) detection in SCIMs during both start-up and steady-state operation regimes is proposed. It consists of two main steps. In the first one, the analysis of three-axis vibration signals using fractal dimension (FD) theory is carried out. Since different FD-based algorithms can give different results, three algorithms named Katz’ FD, Higuchi’s FD, and box dimension, are tested. In the second step, a fuzzy logic system for each regime is presented for automatic diagnosis. To validate the proposal, a motor with different damage levels has been tested: one with a partially BRB, a second with one fully BRB, and the third with two BRBs. The obtained results demonstrate the proposed effectiveness.

Adult Literacy and Parenting Outcomes of a Rural, Home-Based Program.

ERIC Educational Resources Information Center

Meehan, Merrill L.; Walsh, Sandra; Spring, Janet; Swisher, Angie; Lewis, Harry

The Even Start Family Literacy Program is a national program designed to break the cycle of poverty and illiteracy by working with low-income families to improve adult literacy, parenting skills, and developmental and preschool readiness of young children in the family. The Monongalia County (West Virginia) Even Start Program is unusual in that…

Expanding Exposure: Can Increasing the Daily Duration of Head Start Reduce Childhood Obesity?

ERIC Educational Resources Information Center

Frisvold, David E.; Lumeng, Julie C.

2011-01-01

Coinciding with the work requirements of welfare reform in the mid-1990s, the early childhood education program, Head Start, significantly expanded to increase the availability of full-day classes. Using unique administrative data, we examine the effect of full-day compared to half-day attendance on childhood obesity. This effect is identified…

Connecting Entrepreneurial and Action Learning in Student-Initiated New Business Ventures: The Case of SPEED

ERIC Educational Resources Information Center

Rae, David

2009-01-01

The Student Placements for Entrepreneurs in Education (SPEED) project ran in 12 higher education institutes in the UK between 2006 and 2008, providing an innovative, action learning-based route that enabled students to start new business ventures as self-started work experience, and has influenced successor programmes. The paper addresses three…

20 CFR 402.180 - Procedure on assessing and collecting fees for providing records.

Code of Federal Regulations, 2010 CFR

2010-04-01

... want us to continue to process your request. Also, before we start work on your request under § 402.140... start searching for the records you want. If so, we will let you know promptly upon receiving your... numerous small bills to frequent requesters, or to businesses or agents representing requesters. For...

Introducing the World of Work

ERIC Educational Resources Information Center

Katz, Andrew J.

2008-01-01

The author relates how his realization that students react to lessons positively if they are made to feel like part of a team. The teacher decided to a start a company within his classroom, "hiring" managers, camera operators, and designers to help him start the venture. Students were challenged to apply for a job by submitting an application, a…

Strategic Alliances in Mid South Middle Start: Building Capacity, Creating a Movement

ERIC Educational Resources Information Center

Academy for Educational Development, 2004

2004-01-01

In order to fulfill its mission of middle-grades education reform, the Mid South Middle Start initiative works with schools, organizations, and institutions to improve the social and academic outcomes of students aged 10-14. A vital element of this endeavor is the creation of linkages by the core group of organizational partners with relevant…

The Influence of an Early Childhood Program on Parental Involvement: Perceptions of Former Head Start Parents

ERIC Educational Resources Information Center

Croft, Stacey

2017-01-01

A key component of effective early childhood programs is collaborative relationships between schools, families, and the community (Fiese, Eckert, & Spagnola, 2005). One of these early childhood programs, Head Start, stands out among the others in its efforts to work with children, families, and communities to promote parental involvement. Some…

Preventing & Managing Communicable Diseases. Training Guides for the Head Start Learning Community.

ERIC Educational Resources Information Center

Bowman (James) Associates, San Francisco, CA.

This training guide is intended to improve the skills of Head Start staff and families in dealing with communicable diseases. The guide addresses attitudes toward communicable diseases, how to reduce the spread of disease, and how to recognize and manage illnesses more effectively. The guide consists of six working sections. The first three are…

Eva & Rick's Incredible Journey

ERIC Educational Resources Information Center

Carner, Eva

2006-01-01

In 1982, the author became the foster mom to Rick, a small child who got a pretty rough start to life and an even rougher "pre" start. Rick's birth mother was addicted to alcohol and for most of his time in her womb she drank heavily. The author was a single, special education teacher, and worked with children with developmental…

A Head Start for Poor Children? Backgrounder. No. 1755

ERIC Educational Resources Information Center

Kafer, Krista

2004-01-01

As the 39-year-old federal Head Start program once again comes before Congress for reauthorization, several unanswered questions that have dogged the program since its inception should be considered: (1) Does it work? (2) Does it make any difference in the long run? and (3) Will modest changes supported by the Bush Administration gain traction?…

Descriptive analysis of a 1:1 physiotherapy outpatient intervention post primary lumbar discectomy: one arm of a small-scale parallel randomised controlled trial across two UK sites.

PubMed

Rushton, A; Calcutt, A; Heneghan, N; Heap, A; White, L; Calvert, M; Goodwin, P

2016-11-09

There is a lack of high-quality evidence for physiotherapy post lumbar discectomy. Substantial heterogeneity in treatment effects may be explained by variation in quality, administration and components of interventions. An optimised physiotherapy intervention may reduce heterogeneity and improve patient benefit. The objective was to describe, analyse and evaluate an optimised 1:1 physiotherapy outpatient intervention for patients following primary lumbar discectomy, to provide preliminary insights. A descriptive analysis of the intervention embedded within an external pilot and feasibility trial. Two UK spinal centres. Participants aged ≥18; post primary, single level, lumbar discectomy were recruited. The intervention encompassed education, advice, mobility and core stability exercises, progressive exercise, and encouragement of early return to work/activity. Patients received ≤8 sessions for ≤8 weeks, starting 4 weeks post surgery (baseline). Blinded outcome assessment at baseline and 12 weeks (post intervention) included the Roland Morris Disability Questionnaire. STarT Back data were collected at baseline. Statistical analyses summarised participant characteristics and preplanned descriptive analyses. Thematic analysis grouped related data. Twenty-two of 29 allocated participants received the intervention. STarT Back categorised n=16 (55%) participants 'not at low risk'. Physiotherapists identified reasons for caution for 8 (36%) participants, commonly risk of overdoing activity (n=4, 18%). There was no relationship between STarT Back and physiotherapists' evaluation of caution. Physiotherapists identified 154 problems (mean (SD) 5.36 (2.63)). Those 'not at low risk', and/or requiring caution presented with more problems, and required more sessions (mean (SD) 3.14 (1.16)). Patients present differently and therefore require tailored interventions. These differences may be identified using clinical reasoning and outcome data. ISRCTN33808269; post results. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

Safe and Secure Virtualization: Answers for IMA next Generation and Beyond

NASA Astrophysics Data System (ADS)

Almeida, Jose; Vatrinet, Francis

2010-08-01

This paper presents some of the challenges the aerospace industry is facing for the future and explains why and how a safe and secured virtualization technology can help solving these challenges Efforts around the next generation of IMA have already started, like the European FP7 funded project SCARLETT or the IDEE5 project and many avionics players and working groupware focused on how the new technologies like SMP capabilities introduced in latest CPU architectures, can help increasing system performances in future avionics system. We present PikeOS, a separation micro-kernel, which applies the state-of-the-art techniques and widely recognized standards such as ARINC 653 and MILS in order to guarantee safety and security properties, and still improve overall performance.

Recency and suffix effects in serial recall of musical stimuli.

PubMed

Greene, R L; Samuel, A G

1986-10-01

Auditory presentation of verbal items leads to larger recency effects in recall than visual presentation. This enhanced recency can be eliminated if a stimulus suffix (an irrelevant sound) follows the last item. Four experiments tested the hypothesis that recency and suffix effects in serial recall result from a speech-specific process. It was demonstrated that serial recall of musical notes played on a piano exhibited substantial recency effects. These recency effects were reduced when the list items were followed by either a piano chord or the word start. However, a white-noise suffix had no effect on recency. This pattern of data is consistent with current work on auditory perception and places constraints on theories of recency and suffix effects.

A refined quartic potential energy surface and large scale vibrational calculations for S0 thiophosgene.

PubMed

Rashev, Svetoslav; Moule, David C

2015-04-05

In this work we present a full 6D quartic potential energy surface (PES) for S0 thiophosgene in curvilinear symmetrized bond-angle coordinates. The PES was refined starting from an ab initio field derived from acc-pVTZ basis set with CCSD(T) corrections for electron correlation. In the present calculations we used our variational method that was recently tested on formaldehyde and some of its isotopomers, along with additional improvements. The lower experimentally known vibrational levels for 35Cl2CS were reproduced quite well in the calculations, which can be regarded as a test for the feasibility of the obtained quartic PES. Copyright © 2015 Elsevier B.V. All rights reserved.

Proof of a Dain inequality with charge

NASA Astrophysics Data System (ADS)

Lopes Costa, João

2010-07-01

We prove an upper bound for angular momentum and charge in terms of the mass for electro-vacuum asymptotically flat axisymmetric initial data sets with simply connected orbit space. This completes the work started in (Chruściel and Costa 2009 Class. Quantum Grav. 26 235013 (arXiv:gr-qc/0909.5625)) where this charged Dain inequality was first presented but where the proof of the main result, based on the methods of Chruściel et al (Ann. Phys. 2008 323 2591-613 (arXiv:gr-qc/0712.4064v2)), was only sketched. Here we present a complete proof while simplifying the methods suggested by Chruściel and Costa (2009 Class. Quantum Grav. 26 235013 (arXiv:gr-qc/0909.5625)).

Sowing the Seeds of Soft Power: The United States and India in the Next Great Game

DTIC Science & Technology

2015-12-01

Pakistan and their relations to the great powers of the day. In this work, we see the divide between India and the United States start after the United...quickly taking shape. If the United States wishes to be a key player in the game, it must start now to use every means at its disposal to shape the...States and the Soviet Union quickly tore the alliance apart. From the start , President Roosevelt disliked the authoritarian Soviet regime and did

Transverse beam dynamics in non-linear Fixed Field Alternating Gradient accelerators

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

Haj, Tahar M.; Meot, F.

2016-03-02

In this paper, we present some aspects of the transverse beam dynamics in Fixed Field Ring Accelerators (FFRA): we start from the basic principles in order to derive the linearized transverse particle equations of motion for FFRA, essentially FFAGs and cyclotrons are considered here. This is a simple extension of a previous work valid for linear lattices that we generalized by including the bending terms to ensure its correctness for FFAG lattice. The space charge term (contribution of the internal coulombian forces of the beam) is contained as well, although it is not discussed here. The emphasis is on themore » scaling FFAG type: a collaboration work is undertaken in view of better understanding the properties of the 150 MeV scaling FFAG at KURRI in Japan, and progress towards high intensity operation. Some results of the benchmarking work between different codes are presented. Analysis of certain type of field imperfections revealed some interesting features about this machine that explain some of the experimental results and generalize the concept of a scaling FFAG to a non-scaling one for which the tune variations obey a well-defined law.« less

Characterization methods of integrated optics for mid-infrared interferometry

NASA Astrophysics Data System (ADS)

Labadie, Lucas; Kern, Pierre Y.; Schanen-Duport, Isabelle; Broquin, Jean-Emmanuel

2004-10-01

his article deals with one of the important instrumentation challenges of the stellar interferometry mission IRSI-Darwin of the European Space Agency: the necessity to have a reliable and performant system for beam combination has enlightened the advantages of an integrated optics solution, which is already in use for ground-base interferometry in the near infrared. Integrated optics provides also interesting features in terms of filtering, which is a main issue for the deep null to be reached by Darwin. However, Darwin will operate in the mid infrared range from 4 microns to 20 microns where no integrated optics functions are available on-the-shelf. This requires extending the integrated optics concept and the undergoing technology in this spectral range. This work has started with the IODA project (Integrated Optics for Darwin) under ESA contract and aims to provide a first component for interferometry. In this paper are presented the guidelines of the characterization work that is implemented to test and validate the performances of a component at each step of the development phase. We present also an example of characterization experiment used within the frame of this work, is theoretical approach and some results.

Development and Engineering Design in Support of "Rover Ranch": A K-12 Outreach Software Project

NASA Technical Reports Server (NTRS)

Pascali, Raresh

2003-01-01

A continuation of the initial development started in the summer of 1999, the body of work performed in support of 'ROVer Ranch' Project during the present fellowship dealt with the concrete concept implementation and resolution of the related issues. The original work performed last summer focused on the initial examination and articulation of the concept treatment strategy, audience and market analysis for the learning technologies software. The presented work focused on finalizing the set of parts to be made available for building an AERCam Sprint type robot and on defining, testing and implementing process necessary to convert the design engineering files to VRML files. Through reverse engineering, an initial set of mission critical systems was designed for beta testing in schools. The files were created in ProEngineer, exported to VRML 1.0 and converted to VRML 97 (VRML 2.0) for final integration in the software. Attributes for each part were assigned using an in-house developed JAVA based program. The final set of attributes for each system, their mutual interaction and the identification of the relevant ones to be tracked, still remain to be decided.

ESA's Planetary Science Archive: International collaborations towards transparent data access

NASA Astrophysics Data System (ADS)

Heather, David

The European Space Agency's (ESA) Planetary Science Archive (PSA) is the central repository for science data returned by all ESA planetary missions. Current holdings include data from Giotto, SMART-1, Cassini-Huygens, Mars Express, Venus Express, and Rosetta. In addition to the basic management and distribution of these data to the community through our own interfaces, ESA has been working very closely with international partners to globalize the archiving standards used and the access to our data. Part of this ongoing effort is channelled through our participation in the International Planetary Data Alliance (IPDA), whose focus is on allowing transparent and interoperable access to data holdings from participating Agencies around the globe. One major focus of this work has been the development of the Planetary Data Access Protocol (PDAP) that will allow for the interoperability of archives and sharing of data. This is already used for transparent access to data from Venus Express, and ESA are currently working with ISRO and NASA to provide interoperable access to ISRO's Chandrayaan-1 data through our systems using this protocol. Close interactions are ongoing with NASA's Planetary Data System as the standards used for planetary data archiving evolve, and two of our upcoming missions are to be the first to implement the new 'PDS4' standards in ESA: BepiColombo and ExoMars. Projects have been established within the IPDA framework to guide these implementations to try and ensure interoperability and maximise the usability of the data by the community. BepiColombo and ExoMars are both international missions, in collaboration with JAXA and IKI respectively, and a strong focus has been placed on close interaction and collaboration throughout the development of each archive. For both of these missions there is a requirement to share data between the Agencies prior to public access, as well as providing complete open access globally once the proprietary periods have elapsed. This introduces a number of additional challenges in terms of managing different access rights to data throughout the mission lifetime. Both of these mission will have data pipelines running internally to our Science Ground Segment, in order to release the instrument teams to work more on science analyses. We have followed the IPDA recommendations of trying to start work on archiving with these missions very early in the life-cycle (especially on BepiColombo and now starting on JUICE), and endeavour to make sure that archiving requirements are clearly stated in official mission documentation at the time of selection. This has helped to ensure that adequate resources are available internally and within the instrument teams to support archive development. This year will also see major milestones for two of our operational missions. Venus Express will start an aerobraking phase in late spring / early summer, and will wind down science operations this year, while Rosetta will encounter the comet Churyamov-Gerasimenko, deploy the lander and start its main science phase. While these missions are at opposite ends of their science phases, many of the challenges from the archiving side are similar. Venus Express will have a full mission archive review this year and data pipelines will start to be updated / corrected where necessary in order to ensure long-term usability and interoperable access to the data. Rosetta will start to deliver science data in earnest towards the end of the year, and the focus will be on ensuring that data pipelines are ready and robust enough to maintain deliveries throughout the main science phase. For both missions, we aim to use the lessons learned and technologies developed through our international collaborations to maximise the availability and usability of the data delivered. In 2013, ESA established a Planetary Science Archive User Group (PSA-UG) to provide independent advice on ways to improve our services and our provision of data to the community. The PSA-UG will be a key link to the international planetary science community, providing requirements and recommendations that will allow us to better meet their needs, and promoting the use of the PSA and its data holdings. This presentation will outline the many international collaborations currently in place for the PSA, both for missions in operations and for those under development. There is a strong desire to provide full transparent science data access and improved services to the planetary science community around the world, and our continuing work with our international partners brings us ever closer to achieving this goal. Many challenges still remain, and these will be outlined in the presentation.

Work-related behaviour and experience patterns of physicians compared to other professions.

PubMed

Voltmer, Edgar; Kieschke, Ulf; Spahn, Claudia

2007-08-11

To identify health risk factors and resources of physicians in comparison with other professions. Data of cross-sectional mail surveys conducted among German physicians (n = 344), teachers (n = 5169), policemen (n = 851), prison officers (n = 3653), and starting entrepreneurs (n = 632) were analysed regarding eleven health-relevant dimensions and four behaviour patterns examined by the questionnaire "Work-Related Behaviour and Experience Pattern (AVEM)". Only 17% of the physicians showed healthy behaviour and experience patterns. With 43%, they scored highest in terms of reduced working motivation. Together with the teachers, they also had the highest scores for resignation and burnout (27%). Satisfaction with life and work as well as social support showed medium scores. Starting entrepreneurs showed the healthiest patterns (45%), but also the highest risk pattern for overexertion (38%). It was possible to identify clear risk patterns for profession-related psychosocial symptoms and impairments. The high scores for reduced working motivation demonstrate the need for interventions to improve organisation of health care and individual coping strategies.

Characterization of PLA parts made with AM process

NASA Astrophysics Data System (ADS)

Spina, Roberto; Cavalcante, Bruno; Lavecchia, Fulvio

2018-05-01

The main objective of the presented work is to evaluate the thermal behavior of Poly-lactic acid (PLA) parts made with a Fused Deposition Modelling (FDM) process. By using a robust framework for the testing sequence of PLA parts, with the aim of establishing a standard testing cycle for the optimization of the part performance and quality. The research involves study the materials before and after 3D printing. Two biodegradable PLA polymers are investigated, characterized by different colors (one black and the other transparent). The study starts with the examination of each polymeric material and measurements of its main thermal properties.

Towards an analytical framework for tailoring supercontinuum generation.

PubMed

Castelló-Lurbe, David; Vermeulen, Nathalie; Silvestre, Enrique

2016-11-14

A fully analytical toolbox for supercontinuum generation relying on scenarios without pulse splitting is presented. Furthermore, starting from the new insights provided by this formalism about the physical nature of direct and cascaded dispersive wave emission, a unified description of this radiation in both normal and anomalous dispersion regimes is derived. Previously unidentified physics of broadband spectra reported in earlier works is successfully explained on this basis. Finally, a foundry-compatible few-millimeters-long silicon waveguide allowing octave-spanning supercontinuum generation pumped at telecom wavelengths in the normal dispersion regime is designed, hence showcasing the potential of this new analytical approach.

Recursive Deadbeat Controller Design

NASA Technical Reports Server (NTRS)

Juang, Jer-Nan; Phan, Minh Q.

1997-01-01

This paper presents a recursive algorithm for a deadbeat predictive controller design. The method combines together the concepts of system identification and deadbeat controller designs. It starts with the multi-step output prediction equation and derives the control force in terms of past input and output time histories. The formulation thus derived satisfies simultaneously system identification and deadbeat controller design requirements. As soon as the coefficient matrices are identified satisfying the output prediction equation, no further work is required to compute the deadbeat control gain matrices. The method can be implemented recursively just as any typical recursive system identification techniques.

Some past and present challenges of econophysics

NASA Astrophysics Data System (ADS)

Mantegna, R. N.

2016-12-01

We discuss the cultural background that was shared by some of the first econophysicists when they started to work on economic and financial problems with methods and tools of statistical physics. In particular we discuss about the role of stylized facts and statistical physical laws in economics and statistical physics respectively. As an example of the problems and potentials associated with the interaction of different communities of scholars dealing with problems observed in economic and financial systems we briefly discuss the development and the perspectives of the use of tools and concepts of networks in econophysics, economics and finance.

Brief history of the Cambridge STEM aberration correction project and its progeny.

PubMed

Brown, L Michael; Batson, Philip E; Dellby, Niklas; Krivanek, Ondrej L

2015-10-01

We provide a brief history of the project to correct the spherical aberration of the scanning transmission electron microscope (STEM) that started in Cambridge (UK) and continued in Kirkland (WA, USA), Yorktown Heights (NY, USA), and other places. We describe the project in the full context of other aberration correction research and related work, partly in response to the incomplete context presented in the paper "In quest of perfection in electron optics: A biographical sketch of Harald Rose on the occasion of his 80th birthday", recently published in Ultramicroscopy. Copyright © 2015 Elsevier B.V. All rights reserved.

2017 Oersted Medal Presentation: The changing face of physics and the students who take physics

NASA Astrophysics Data System (ADS)

Tobochnik, Jan

2017-06-01

I have never found teaching physics to be as interesting as it is now for two reasons. Students are changing rapidly and it is an intellectual challenge to figure out the best way to work with them. Simultaneously, it is becoming increasingly clear that there is a major disconnect between what we teach, which has barely changed since I started teaching, and what physicists and other scientists are actually doing in their research. I will discuss these changes and what is being done at Kalamazoo College and elsewhere to address these challenges.

The Wide-Field Imaging Interferometry Testbed: Recent Results

NASA Technical Reports Server (NTRS)

Rinehart, Stephen

2006-01-01

We present recent results from the Wide-Field Imaging Interferometry Testbed (WIIT). The data acquired with the WIIT is "double Fourier" data, including both spatial and spectral information within each data cube. We have been working with this data, and starting to develop algorithms, implementations, and techniques for reducing this data. Such algorithms and tools are of great importance for a number of proposed future missions, including the Space Infrared Interferometric Telescope (SPIRIT), the Submillimeter Probe of the Evolution of Cosmic Structure (SPECS), and the Terrestrial Planet Finder Interferometer (TPF-I)/Darwin. Recent results are discussed and future study directions are described.

[Jean-Louis-Paul Denucé (1824-1889): A forgotten pioneer of plastic surgery].

PubMed

Marck, K W; Martin, D

2016-02-01

The authors propose to define as main characterization of plastic reconstructive surgery the conceptual thinking that leads to a rational choice of an operative treatment. Conceptual thinking in plastic surgery started halfway the nineteenth century with the first schematic representations of the operative procedures available at that time, in which Von Ammon and Baumgarten, Szymanowski and Denucé played a prominent role. These four authors and their works are presented with special attention for the less known of them, Jean-Paul Denucé, surgeon in Bordeaux. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

Perspective on IUPAP-ICWIP conferences and USA Participation

NASA Astrophysics Data System (ADS)

White, Herman

2015-04-01

Starting in 1999, the (International Union of Pure and Applied Physics) IUPAP, General Assembly, passed a resolution to form an IUPAP Working Group on Women in Physics. This lead to a number of international conferences that focused on analyzing the then current status of and progress in promoting women in physics for each country and world wide as well as sharing physics research progress and participation. I was twice a member of the USA delegation and participated in two of the last three of these conferences. I will present a perspective on the USA participation and contribution to the efforts of the conferences.

Prefrontal spatial working memory network predicts animal's decision making in a free choice saccade task

PubMed Central

Mochizuki, Kei

2015-01-01

While neurons in the lateral prefrontal cortex (PFC) encode spatial information during the performance of working memory tasks, they are also known to participate in subjective behavior such as spatial attention and action selection. In the present study, we analyzed the activity of primate PFC neurons during the performance of a free choice memory-guided saccade task in which the monkeys needed to choose a saccade direction by themselves. In trials when the receptive field location was subsequently chosen by the animal, PFC neurons with spatially selective visual response started to show greater activation before cue onset. This result suggests that the fluctuation of firing before cue presentation prematurely biased the representation of a certain spatial location and eventually encouraged the subsequent choice of that location. In addition, modulation of the activity by the animal's choice was observed only in neurons with high sustainability of activation and was also dependent on the spatial configuration of the visual cues. These findings were consistent with known characteristics of PFC neurons in information maintenance in spatial working memory function. These results suggest that precue fluctuation of spatial representation was shared and enhanced through the working memory network in the PFC and could finally influence the animal's free choice of saccade direction. The present study revealed that the PFC plays an important role in decision making in a free choice condition and that the dynamics of decision making are constrained by the network architecture embedded in this cortical area. PMID:26490287

REPORT OF THE EFFECTIVENESS OF PROJECT HEAD START, LUBBOCK, TEXAS. PARTS I, II, AND APPENDICES.

ERIC Educational Resources Information Center

CARTWRIGHT, WALTER J.; STEGLICH, W.G.

WITH THE COMPLETION OF THE FIRST GRADE BY THE FIRST HEAD START CLASS IN LUBBOCK, TEXAS, THIS STUDY WAS UNDERTAKEN TO PRESENT DATA ON THE EFFECTIVENESS OF THE HEAD START PROGRAM IN IMPROVING DISADVANTAGED CHILDREN'S CHANCES FOR SCHOOL SUCCESS. TWO HUNDRED AND NINETY-FIVE URBAN AREA HEAD START CHILDREN FROM NEGRO, ANGLO-AMERICAN, AND…

Choosing between responsive-design websites versus mobile apps for your mobile behavioral intervention: presenting four case studies.

PubMed

Turner-McGrievy, Gabrielle M; Hales, Sarah B; Schoffman, Danielle E; Valafar, Homay; Brazendale, Keith; Weaver, R Glenn; Beets, Michael W; Wirth, Michael D; Shivappa, Nitin; Mandes, Trisha; Hébert, James R; Wilcox, Sara; Hester, Andrew; McGrievy, Matthew J

2017-06-01

Both mobile apps and responsive-design websites (web apps) can be used to deliver mobile health (mHealth) interventions, but it can be difficult to discern which to use in research. The goal of this paper is to present four case studies from behavioral interventions that developed either a mobile app or a web app for research and present an information table to help researchers determine which mobile option would work best for them. Four behavioral intervention case studies (two developed a mobile app, and two developed a web app) presented include time, cost, and expertise. Considerations for adopting a mobile app or a web app-such as time, cost, access to programmers, data collection, security needs, and intervention components- are presented. Future studies will likely integrate both mobile app and web app modalities. The considerations presented here can help guide researchers on which platforms to choose prior to starting an mHealth intervention.

ESU Plan of Work 2011: More Money for Our Education

ERIC Educational Resources Information Center

European Students' Union (NJ1), 2011

2011-01-01

Following signals across Europe the European Students' Union (ESU) will focus its next working year on defending education as a public good, and a public responsibility. Since the very start of the new ESU team in July 2010 the ESU elected representatives have been working to develop a new political vision for the next ESU working year, that both…

Research on Social Work Practice in Egypt and the Arab World

ERIC Educational Resources Information Center

Megahead, Hamido A.

2017-01-01

This article aims at introducing the research on social work practice in Egypt and the Arab World as a thematic topic. It has started with the essence of the current Arab World and its definition. Social work practice and models of social work intervention in this specific region have been described in terms of its specific and topographic nature.…

Effect on work ability after team evaluation of functioning regarding pain, self-rated disability, and work ability assessment.

PubMed

Norrefalk, Jan-Rickard; Littwold-Pöljö, Agneta; Ryhle, Leif; Jansen, Gunilla Brodda

2010-08-26

To evaluate the effect of a 1-2 week multiprofessional team assessment, without a real rehabilitation effort, 60 patients suffering from long-standing pain and on long-lasting time on sick leave were studied. A questionnaire concerning their daily activities, quality of life, pain intensity, sick-leave level, and their work state was filled out by all patients before starting the assessment and at a 1-year follow-up. The results from the assessment period and the multiprofessional team decision of the patient's working ability were compared with the actual working rate after 1 year. The follow-up showed a significant reduction of sick leave and a higher level of activity (P < 0.001). One year after the initial evaluation, 40% showed a reduction in sickness benefit level and 12% resumed full-time work. However, the team evaluation of the patient's work ability did not correlate to predict the actual outcome. The patient's pain intensity, life satisfaction, gender, age, ethnic background, and time absent from work before the start of the evaluation showed no correlation to reduction on time on sickness benefit level. These parameters could not be used as predictors in this study.

Convergence, divergence, and parallelism in marine biodiversity trends: Integrating present-day and fossil data.

PubMed

Huang, Shan; Roy, Kaustuv; Valentine, James W; Jablonski, David

2015-04-21

Paleontological data provide essential insights into the processes shaping the spatial distribution of present-day biodiversity. Here, we combine biogeographic data with the fossil record to investigate the roles of parallelism (similar diversities reached via changes from similar starting points), convergence (similar diversities reached from different starting points), and divergence in shaping the present-day latitudinal diversity gradients of marine bivalves along the two North American coasts. Although both faunas show the expected overall poleward decline in species richness, the trends differ between the coasts, and the discrepancies are not explained simply by present-day temperature differences. Instead, the fossil record indicates that both coasts have declined in overall diversity over the past 3 My, but the western Atlantic fauna suffered more severe Pliocene-Pleistocene extinction than did the eastern Pacific. Tropical western Atlantic diversity remains lower than the eastern Pacific, but warm temperate western Atlantic diversity recovered to exceed that of the temperate eastern Pacific, either through immigration or in situ origination. At the clade level, bivalve families shared by the two coasts followed a variety of paths toward today's diversities. The drivers of these lineage-level differences remain unclear, but species with broad geographic ranges during the Pliocene were more likely than geographically restricted species to persist in the temperate zone, suggesting that past differences in geographic range sizes among clades may underlie between-coast contrasts. More detailed comparative work on regional extinction intensities and selectivities, and subsequent recoveries (by in situ speciation or immigration), is needed to better understand present-day diversity patterns and model future changes.

Creating a Viable Climate for Change When Working With Community Organizations

DOT National Transportation Integrated Search

1995-01-01

Building a successful traffic safety program starts with the recognition that : to be successful, the community-wide effort requires the support of many : individuals and organizations. If everyone is to work collectively toward the : overall plannin...

Sleep patterns and sleepiness among young students: A longitudinal study before and after admission as trainees and apprentices.

PubMed

Fischer, Frida Marina; Wey, Daniela; Valente, Daniel; Luz, Andréa Aparecida da; Pinheiro, Fernando; Fonseca, Barbara Cristina; Silva-Costa, Aline; Moreno, Claudia Roberta; Menna-Barreto, Luiz; Teixeira, Liliane Reis

2015-05-01

In developing countries, youngsters start to work during the high school years. Several studies have shown the difficulties associated with double shift, i.e. to work and study concomitantly, and its negative health consequences. Work and study time, as social synchronizers, have significant effects on the sleep-wake cycle (SWC). The purpose of this study was to evaluate sleep patterns and sleepiness in young students before and after entering the workforce as apprentices or trainees. Participants were 40 adolescents (26 males), 15-18 years old (mean = 15.8 years old) engaged in a first-job program at a non-governmental organization (NGO) while attending evening high school in the outskirts of the city of São Paulo, Brazil. The participants wore actigraphs (Ambulatory Monitoring, Inc.) and registered subjective sleepiness on KSS (Karolinska Sleepiness Scale) along 7 consecutive days, before and after admission to the job. Descriptive analyses were performed, and the variables were tested by means of the t-test and repeated measures ANOVA taking factors day of the week and time of the day into consideration. The participants' sleep duration on weekdays exhibited significant difference before and after starting work (F = 4.55; p = 0.04); the mean sleep duration was 492 min (SD = 44 min) before admission to the job to decrease to 405 min (SD = 58 min) after starting work. The mid-sleep time exhibited significant difference on weekdays before and after starting work (04:57 h; SD = 45 min versus 03:30 h; SD = 54 min; F = 4.91; p = 0.03). Finally, also sleepiness on weekdays (F = 6.41; p = 0.04) and at the waking time (F = 10.75; p < 0.01) exhibited significant difference before and after admission to the job. This article emphasizes the fact that social synchronizers like working during the day and studying in the evening changed the participants' SWC and were associated with sleep restriction. Brazilian governmental incentives notwithstanding, simultaneous performance of several activities by young workers should be considered as an occupational health hazard. Employment policies targeting young workers should take the dual shift - study and work - and its effects on the sleep-wake cycle into account.

Determinants associated with work participation in patients with established rheumatoid arthritis taking tumor necrosis factor inhibitors.

PubMed

Manders, Sofie H M; Kievit, Wietske; Braakman-Jansen, Annemarie L M A; Brus, Herman L M; Hendriks, Lidy; Fransen, Jaap; van de Laar, Mart A F J; van Riel, Piet L C M

2014-07-01

Reduced work participation (WP) is a common problem for patients with rheumatoid arthritis (RA) and generates high costs for society. Therefore, it is important to explore determinants of WP at the start of tumor necrosis factor inhibitor (TNFi) treatment, and for changes in WP after 2 years of TNFi treatment. Within the Dutch Rheumatoid Arthritis Monitoring (DREAM) biologic register, WP data were available from 508 patients with RA younger than 65 years and without an (early) retirement pension. WP was registered at start of TNFi treatment and after 2 years of followup and was measured by single patient-reported binary questions whether they had work, paid or voluntary, or had a disability allowance or a retirement pension. Determinants measured at baseline were age, sex, disease duration, functional status [through Health Assessment Questionnaire-Disability Index (HAQ-DI)], 28-joint Disease Activity Score (DAS28), rheumatoid factor, presence of erosions, number of previous disease-modifying antirheumatic drugs, and number of comorbidities. During the 2 years of followup, HAQ-DI response and European League Against Rheumatism response were measured. Univariate analyses (excluded if p value was > 0.2) and multivariate (excluded if p value was > 0.1) logistic regression analyses were used. Determinants associated with WP at baseline were having a better HAQ-DI (OR 0.32, p = 0.000) and male sex (OR 0.65, p = 0.065). After 2 years of TNFi therapy, 11.8% (n = 60) started to work and 13.6% (n = 69) stopped working. Determinants associated with starting to work were better baseline HAQ-DI (OR 0.58), positive RF (OR 2.73), and young age (OR 0.96); and for stopping work, worse baseline HAQ-DI (OR 2.74), low HAQ-DI response (OR 0.31), and comorbidity (OR 2.67), all with p < 0.1. Young patients with RA and a high functional status without any comorbidity will have a better chance of working. This supports the main goal in the management of RA: to suppress disease activity as soon and as completely as possible to prevent irreversible destruction of the joints, and thus maintain a good functional status of the patient. Because of the low proportion of variance explained by the models in this study, other factors besides the ones studied are associated with WP.

Putting Volition to Work in Education

ERIC Educational Resources Information Center

Winne, Philip H.

2004-01-01

Playing the role of constructive critic of articles in this special issue, I adopt the term self-reliance to refer to work habits, work styles, volition, and self-regulated learning. Starting with the belief that developing self-reliance is an important goal of education, I examine key issues that influence the likelihood of reaching this goal. I…

Response: Training Doctoral Students to Be Scientists

ERIC Educational Resources Information Center

Pollio, David E.

2012-01-01

The purpose of this article is to begin framing doctoral training for a science of social work. This process starts by examining two seemingly simple questions: "What is a social work scientist?" and "How do we train social work scientists?" In answering the first question, some basic assumptions and concepts about what constitutes a "social work…

Learning Academic Work Practices in Discipline, Department and University

ERIC Educational Resources Information Center

Zukas, Miriam; Malcolm, Janice

2017-01-01

Purpose: This paper aims to examine the everyday practices of academic work in social science to understand better academics' learning. It also asks how academic work is enacted in relation to the discipline, department and university, taking temporality as its starting point. Design/methodology/approach: The study sought to trace academic…

50 Years Later: Can Current Education Policy Finish the Work Started with Brown?

ERIC Educational Resources Information Center

Chenoweth, Karin

2004-01-01

Black Issues In Higher Education first started publishing a year after the 1983 "A Nation at Risk" report shocked many into taking seriously the sorry nature of elementary and secondary education in this country. The report's dire warnings of a "rising tide of mediocrity," bolstered by data on the rarity of academic rigor in American schools, have…

Foreword

Treesearch

Charles G. Terry Shaw

2010-01-01

It was in June, 1966 when I started working for the tree disease scientists at the Forestry Sciences Laboratory in Moscow, Idaho. That autumn I would start my University course in Forestry which eventually would lead to a long and rewarding career as a Forest Pathologist. But I knew none of that 44 years ago as a lowly paid summer aid hired by the Blister Rust research...

Washington State Even Start 1993-1994: Final Evaluation. A Report to the Office of Adult Literacy.

ERIC Educational Resources Information Center

Iglitzin, Lynne; Wandschneider, Mary

All 18 Washington State Even Start sites participated in the program's evaluation. Site coordinators administered the assessment and evaluation measures to the adults served by the program and to teachers working with children at both entry and exit from the program. An indepth study was conducted of 134 families for whom there were complete sets…

We Started a Digital Collection for next to Nothing and You Can Too

ERIC Educational Resources Information Center

Northam, Adam

2010-01-01

In this article, the author shares the successful digitization effort of their library and demonstrates how they were able to expand their first digital collection. The author started working at James G. Gee Library when the director asked him to try digital collections and was asked to study an open source collection management program called…

USE OF INTEGRATED PLANNING TOOLS FOR REVITALIZATION: SMARTE (U.S.) AND START-UP PLAN (GERMANY)

EPA Science Inventory

The U.S.-German Bilateral Working Group produced two primary products during Phase 3 (2000-2005). SMARTe (Sustainable Management Approaches and Revitalization Tools-electronic) is being developed in the U.S. and the START-UP Plan is being...

The Talkies: Articles and Illustrations from a Great Fan Magazine 1928-1940.

ERIC Educational Resources Information Center

Griffith, Richard

"Photoplay" Magazine is the source of these articles and photographs, which date from the start of the sound era to the start of World War II. Sections are devoted to stars, living and working in Hollywood, contributions of the production crew to films, trends in motion pictures, and a sample of film fans' favorite columns. (JK)

Executive Function Skills, Early Mathematics, and Vocabulary in Head Start Preschool Children

ERIC Educational Resources Information Center

Harvey, Hattie A.; Miller, Gloria E.

2017-01-01

Research Findings: The contribution of 3 executive function skills (shifting, inhibitory control, and working memory) and their relation to early mathematical skills was investigated with preschoolers attending 6 Head Start centers. Ninety-two children ranging in age from 3 years, 1 month, to 4 years, 11 months, who were native English or Spanish…

How to Suceed in Team Teaching--By Really Trying. Occasional Paper No. 13.

ERIC Educational Resources Information Center

Nolan, Robert R.; Roper, Susan Stavert

This paper provides guidelines in three areas for organizing and working in teaching teams: (1) getting started; (2) making the most of team meetings; and (3) minimizing team problems. Getting started requires a number of key decisions: (1) on what basis should team members be selected? (2) what should be the size of the team? (3) what areas…

"Press Start": The Value of an Online Student-Led, Peer-Reviewed Game Studies Journal

ERIC Educational Resources Information Center

Barr, Matthew

2017-01-01

In this article, an online student journal is described, and the ways in which student participants value the journal are discussed. "Press Start" is a peer-reviewed international journal of game studies, which aims to publish the best student work related to the academic study of video games. Content analysis of qualitative survey data…

Incredible Years Parent Training Support for Nursery Staff Working within a Disadvantaged Flying Start Area in Wales: A Feasibility Study

ERIC Educational Resources Information Center

Bywater, Tracey Jane; Hutchings, Judith Mary; Gridley, Nicole; Jones, Karen

2011-01-01

Parenting programmes are effective interventions for preventing and treating conduct problems in young children. Up to 20% of children in disadvantaged areas have conduct disorder. Recent government initiatives such as targeting early years services to designated disadvantaged Flying Start areas in Wales have resulted in increased nursery-care…

How To Start a Family Day Care = Como Iniciar una Guarderia en El Hogar. [Videotape and Viewer's Guide].

ERIC Educational Resources Information Center

Raphael, Doris; Weisman, Douglas

Being a family day care provider is work that requires professional responsibilities and attention to the physical, emotional, and educational well-being of children; listening and responding to parents; and running a business. This videotape, in English- and Spanish-language versions, explores the elements involved in starting up a family day…

Optimization of Passive Voltage Multipliers for Fast Start-up and Multi-voltage Power Supplies in Electromagnetic Energy Harvesting Systems

NASA Astrophysics Data System (ADS)

Yang, G.; Stark, B. H.; Burrow, S. G.; Hollis, S. J.

2014-11-01

This paper demonstrates the use of passive voltage multipliers for rapid start-up of sub-milliwatt electromagnetic energy harvesting systems. The work describes circuit optimization to make as short as possible the transition from completely depleted energy storage to the first powering-up of an actively controlled switched-mode converter. The dependency of the start-up time on component parameters and topologies is derived by simulation and experimentation. The resulting optimized multiplier design reduces the start-up time from several minutes to 1 second. An additional improvement uses the inherent cascade structure of the voltage multiplier to power sub-systems at different voltages. This multi-rail start-up is shown to reduce the circuit losses of the active converter by 72% with respect to the optimized single-rail system. The experimental results provide insight into the multiplier's transient behaviour, including circuit interactions, in a complete harvesting system, and offer important information to optimize voltage multipliers for rapid start-up.

Sleep and sleepiness: impact of entering or leaving shiftwork--a prospective study.

PubMed

Akerstedt, Torbjörn; Nordin, Maria; Alfredsson, Lars; Westerholm, Peter; Kecklund, Göran

2010-07-01

Very little is known about the effects on sleep and sleepiness of entering or exiting shiftwork. The present study used a longitudinal database (n = 3637). Participants completed a questionnaire on work hours, sleep, and work environment at the start and end of a 5-yr period. Changes in shift/day work status were related to change in a number of subjective sleep variables using logistic regression analysis. The analyses were adjusted for age, sex, and differences in socioeconomic status, work demands, work control, physical workload, marriage status, and number of children. In comparison with constant day work, entering shiftwork (with or without night shifts) from day work increased the risk of difficulties in falling asleep, and leaving shiftwork reduced this risk (odds ratio [OR] = 2.8 [confidence interval, CI = 1.8-4.5]). Also falling asleep at work showed a consistent pattern; an increased risk of falling asleep for those with shiftwork on both occasions, and for those with night work on both occasions. Also entering night work was associated with a strongly increased risk of falling asleep at work (OR = 2.9 [CI = 1.3-6.7]). These results suggest that entering and leaving shiftwork has a considerable impact on sleep and alertness. However, there is a need for large and more extended longitudinal studies to support our findings.

New Work Demands in Higher Education. A Study of the Relationship between Excessive Workload, Coping Strategies and Subsequent Health among Academic Staff

ERIC Educational Resources Information Center

Melin, Marika; Astvik, Wanja; Bernhard-Oettel, Claudia

2014-01-01

This study investigates the relationship between the work conditions in higher education work settings, the academic staff's strategies for handling excessive workload and impact on well-being and work-life balance. The results show that there is a risk that staff in academic work places will start using compensatory coping strategies to deal with…

Economic Evaluation of Urgent-Start Peritoneal Dialysis Versus Urgent-Start Hemodialysis in the United States

PubMed Central

Liu, Frank Xiaoqing; Ghaffari, Arshia; Dhatt, Harman; Kumar, Vijay; Balsera, Cristina; Wallace, Eric; Khairullah, Quresh; Lesher, Beth; Gao, Xin; Henderson, Heather; LaFleur, Paula; Delgado, Edna M.; Alvarez, Melissa M.; Hartley, Janett; McClernon, Marilyn; Walton, Surrey; Guest, Steven

2014-01-01

Abstract Patients presenting late in the course of kidney disease who require urgent initiation of dialysis have traditionally received temporary vascular catheters followed by hemodialysis. Recent changes in Medicare payment policy for dialysis in the USA incentivized the use of peritoneal dialysis (PD). Consequently, the use of more expeditious PD for late-presenting patients (urgent-start PD) has received new attention. Urgent-start PD has been shown to be safe and effective, and offers a mechanism for increasing PD utilization. However, there has been no assessment of the dialysis-related costs over the first 90 days of care. The objective of this study was to characterize the costs associated with urgent-start PD, urgent-start hemodialysis (HD), or a dual approach (urgent-start HD followed by urgent-start PD) over the first 90 days of treatment from a provider perspective. A survey of practitioners from 5 clinics known to use urgent-start PD was conducted to provide inputs for a cost model representing typical patients. Model inputs were obtained from the survey, literature review, and available cost data. Sensitivity analyses were also conducted. The estimated per patient cost over the first 90 days for urgent-start PD was $16,398. Dialysis access represented 15% of total costs, dialysis services 48%, and initial hospitalization 37%. For urgent-start HD, total per patient costs were $19,352, and dialysis access accounted for 27%, dialysis services 42%, and initial hospitalization 31%. The estimated cost for dual patients was $19,400. Urgent-start PD may offer a cost saving approach for the initiation of dialysis in eligible patients requiring an urgent-start to dialysis. PMID:25526471

Electrical start-up for diesel fuel processing in a fuel-cell-based auxiliary power unit

NASA Astrophysics Data System (ADS)

Samsun, Remzi Can; Krupp, Carsten; Tschauder, Andreas; Peters, Ralf; Stolten, Detlef

2016-01-01

As auxiliary power units in trucks and aircraft, fuel cell systems with a diesel and kerosene reforming capacity offer the dual benefit of reduced emissions and fuel consumption. In order to be commercially viable, these systems require a quick start-up time with low energy input. In pursuit of this end, this paper reports an electrical start-up strategy for diesel fuel processing. A transient computational fluid dynamics model is developed to optimize the start-up procedure of the fuel processor in the 28 kWth power class. The temperature trend observed in the experiments is reproducible to a high degree of accuracy using a dual-cell approach in ANSYS Fluent. Starting from a basic strategy, different options are considered for accelerating system start-up. The start-up time is reduced from 22 min in the basic case to 9.5 min, at an energy consumption of 0.4 kW h. Furthermore, an electrical wire is installed in the reformer to test the steam generation during start-up. The experimental results reveal that the generation of steam at 450 °C is possible within seconds after water addition to the reformer. As a result, the fuel processor can be started in autothermal reformer mode using the electrical concept developed in this work.

Qualification of CASMO5 / SIMULATE-3K against the SPERT-III E-core cold start-up experiments

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

Grandi, G.; Moberg, L.

SIMULATE-3K is a three-dimensional kinetic code applicable to LWR Reactivity Initiated Accidents. S3K has been used to calculate several international recognized benchmarks. However, the feedback models in the benchmark exercises are different from the feedback models that SIMULATE-3K uses for LWR reactors. For this reason, it is worth comparing the SIMULATE-3K capabilities for Reactivity Initiated Accidents against kinetic experiments. The Special Power Excursion Reactor Test III was a pressurized-water, nuclear-research facility constructed to analyze the reactor kinetic behavior under initial conditions similar to those of commercial LWRs. The SPERT III E-core resembles a PWR in terms of fuel type, moderator,more » coolant flow rate, and system pressure. The initial test conditions (power, core flow, system pressure, core inlet temperature) are representative of cold start-up, hot start-up, hot standby, and hot full power. The qualification of S3K against the SPERT III E-core measurements is an ongoing work at Studsvik. In this paper, the results for the 30 cold start-up tests are presented. The results show good agreement with the experiments for the reactivity initiated accident main parameters: peak power, energy release and compensated reactivity. Predicted and measured peak powers differ at most by 13%. Measured and predicted reactivity compensations at the time of the peak power differ less than 0.01 $. Predicted and measured energy release differ at most by 13%. All differences are within the experimental uncertainty. (authors)« less

The Use of Child-Centered Play Therapy and Filial Therapy with Head Start Families: A Brief Report.

ERIC Educational Resources Information Center

Johnson, Laura; Bruhn, Rick; Winek, Jon; Krepps, Jeff; Wiley, Kelly

1999-01-01

Play therapy and filial therapy show promise as effective ways to provide direct services to Head Start, addressing the needs of the children, the families, and the Head Start teachers and staff. Examines the utility of play and filial therapies for the Head Start population, presents a systemic explanation for the benefit of filial therapy, and…

THE PSYCHOANALYTIC CONTRIBUTIONS OF MELITTA SCHMIDEBERG KLEIN. MORE THAN MELANIE KLEIN'S REBEL DAUGHTER.

PubMed

Cassullo, Gabriele

2016-03-01

Compared to the impact of the work of Melanie Klein on the history of psychoanalysis, the contributions of her daughter, Melitta Schmideberg, passed almost unnoticed. At present, Schmideberg is solely remembered for having harshly attacked her mother at the start of the Controversial Discussions of the British Psycho-Analytical Society and for having coined the fitting expression "stable instability" in order to describe borderline and asocial personality disorders. However, the author discusses how the early groundbreaking discoveries of Klein with regards to primitive anxieties were the result of the joint work and thinking of Melanie and Melitta. Moreover, he argues that the conflict between the two, along with the subsequent polarization of their views, did not facilitate the development of psychoanalysis, neither did it help the analytic community to recognize the value of Melitta's contributions to psychoanalysis.

An item-oriented recommendation algorithm on cold-start problem

NASA Astrophysics Data System (ADS)

Qiu, Tian; Chen, Guang; Zhang, Zi-Ke; Zhou, Tao

2011-09-01

Based on a hybrid algorithm incorporating the heat conduction and probability spreading processes (Proc. Natl. Acad. Sci. U.S.A., 107 (2010) 4511), in this letter, we propose an improved method by introducing an item-oriented function, focusing on solving the dilemma of the recommendation accuracy between the cold and popular items. Differently from previous works, the present algorithm does not require any additional information (e.g., tags). Further experimental results obtained in three real datasets, RYM, Netflix and MovieLens, show that, compared with the original hybrid method, the proposed algorithm significantly enhances the recommendation accuracy of the cold items, while it keeps the recommendation accuracy of the overall and the popular items. This work might shed some light on both understanding and designing effective methods for long-tailed online applications of recommender systems.

The story of laser brazing technology

NASA Astrophysics Data System (ADS)

Hoffmann, Peter; Dierken, Roland

2012-03-01

This article gives an overview on the development of laser brazing technology as a new joining technique for car body production. The story starts with fundamental research work at German institutes in 1993, continues with the first implementations in automobile production in 1998, gives examples of applications since then and ends with an outlook. Laser brazing adapted design of joints and boundary conditions for a safe processing are discussed. Besides a better understanding for the sensitivity of the process against joint irregularities and misalignment, the key to successful launch was an advanced system technology. Different working heads equipped with wire feeding device, seam tracking system or tactile sensors for an automated teaching are presented in this paper. Novel laser heads providing a two beam technology will allow improved penetration depth of the filler wire and a more ecological processing by means of energy consumption.

Modified Minkowski Fractal Antenna for Wireless Applications

NASA Astrophysics Data System (ADS)

Brar, Amandeep Singh; Sivia, Jagtar Singh

2018-06-01

A multiband Modified Minkowski Fractal Antenna which can operate at UHF, L, S, C and X band of IEEE standard is presented in this paper. The proposed antenna is simple and low cost. It can work on many bands starting from few hundred megahertz (500 MHz) frequency up to gigahertz (7.1 GHz) frequency. Structure of antenna has been designed by combining Minkowski curve with its inverted Minkowski curve. A maximum gain up to 20 dB, VSWR, radiation pattern and twenty resonant frequencies has been achieved using proposed antenna structure. Simulated results executed in HFSS software. Proposed antenna works on resonant frequencies of 496 MHz to 1.06 GHz (wide band), 1.45, 2.09, 2.38, 3.23, 3.79, 4.06, 4.35, 4.65, 4.82, 5.24, 5.62, 6.12 GHz etc.

Rebuilding research capacity in fragile states: the case of a Somali–Swedish global health initiative

PubMed Central

Dalmar, Abdirisak Ahmed; Hussein, Abdullahi Sheik; Walhad, Said Ahmed; Ibrahim, Abdirashid Omer; Abdi, Abshir Ali; Ali, Mohamed Khalid; Ereg, Derie Ismail; Egal, Khadra Ali; Shirwa, Abdulkadir Mohamed; Aden, Mohamed Hussain; Yusuf, Marian Warsame; Abdi, Yakoub Aden; Freij, Lennart; Johansson, Annika; Mohamud, Khalif Bile; Abdulkadir, Yusuf; Emmelin, Maria; Eriksen, Jaran; Erlandsson, Kerstin; Gustafsson, Lars L; Ivarsson, Anneli; Klingberg-Allvin, Marie; Kinsman, John; Källestål, Carina; Målqvist, Mats; Osman, Fatumo; Persson, Lars-Åke; Sahlén, Klas-Göran; Wall, Stig

2017-01-01

ABSTRACT This paper presents an initiative to revive the previous Somali–Swedish Research Cooperation, which started in 1981 and was cut short by the civil war in Somalia. A programme focusing on research capacity building in the health sector is currently underway through the work of an alliance of three partner groups: six new Somali universities, five Swedish universities, and Somali diaspora professionals. Somali ownership is key to the sustainability of the programme, as is close collaboration with Somali health ministries. The programme aims to develop a model for working collaboratively across regions and cultural barriers within fragile states, with the goal of creating hope and energy. It is based on the conviction that health research has a key role in rebuilding national health services and trusted institutions. PMID:28799463

The Smartphone-Based Offline Indoor Location Competition at IPIN 2016: Analysis and Future Work

PubMed Central

Torres-Sospedra, Joaquín; Jiménez, Antonio R.; Knauth, Stefan; Moreira, Adriano; Beer, Yair; Fetzer, Toni; Ta, Viet-Cuong; Montoliu, Raul; Seco, Fernando; Mendoza-Silva, Germán M.; Belmonte, Oscar; Koukofikis, Athanasios; Nicolau, Maria João; Costa, António; Meneses, Filipe; Ebner, Frank; Deinzer, Frank; Vaufreydaz, Dominique; Dao, Trung-Kien; Castelli, Eric

2017-01-01

This paper presents the analysis and discussion of the off-site localization competition track, which took place during the Seventh International Conference on Indoor Positioning and Indoor Navigation (IPIN 2016). Five international teams proposed different strategies for smartphone-based indoor positioning using the same reference data. The competitors were provided with several smartphone-collected signal datasets, some of which were used for training (known trajectories), and others for evaluating (unknown trajectories). The competition permits a coherent evaluation method of the competitors’ estimations, where inside information to fine-tune their systems is not offered, and thus provides, in our opinion, a good starting point to introduce a fair comparison between the smartphone-based systems found in the literature. The methodology, experience, feedback from competitors and future working lines are described. PMID:28287447

MICROFLORA INVOLVED IN PHYTOREMEDIATION OF POLYAROMATIC HYDROCARBONS

EPA Science Inventory

This research was accomplished by conducting a series of integrated studies starting with field work at contaminated sites, followed by laboratory studies based on the field work, and concluded with development of preliminary molecular monitoring methods tested on field sam...

Hemorrhoid removal -- discharge

MedlinePlus

... work you do, you may need to take time off work. As you start feeling better, increase your physical activity. For example, do more walking. You should have a complete recovery in a few weeks. Pain Management Your doctor will give you a prescription for ...

Sequential mathematical solution for authentication and authorization technique implementing encryption methodology creating secure transaction using various methods also at quantum level

NASA Astrophysics Data System (ADS)

Gharami, Snigdha; Dinakaran, M.

2017-11-01

We see challenges in authenticating each aspect of electronic usage, starting from transaction to social interaction the authenticity and availability of correct information is guided in various ways. Authentication and authorization follow one another; a process of authentication is calculated on multiple layers of steps. In this paper we discuss various possibilities of modifying and using ways to deal with authentication and authorization mechanism. Idea is to work through authentication with mathematical calculations. We will go through various scenarios and find out the system of information that fits best at the moment of need. We will take account of new approaches of authentication and authorization while working on mathematical paradigm of information. The paper also takes an eye on quantum cryptography and discusses on how it could help one in the present scenario. This paper is divided into sections discussing on various paradigm of authentication and how one can achieve it in secure way, this paper is part of research work where analysis of various constraints are to be followed in the extended research work.

Beyond journalism: Theorizing the transformation of journalism.

PubMed

Deuze, Mark; Witschge, Tamara

2018-02-01

Journalism has enjoyed a rich and relatively stable history of professionalization. Scholars coming from a variety of disciplines have theorized this history, forming a consistent body of knowledge codified in national and international handbooks and canonical readers. However, recent work and analysis suggest that the supposed core of journalism and the assumed consistency of the inner workings of news organizations are problematic starting points for journalism studies. In this article, we challenge the consensual (self-)presentation of journalism - in terms of its occupational ideology, its professional culture, and its sedimentation in routines and organizational structures (cf. the newsroom) in the context of its reconfiguration as a post-industrial , entrepreneurial , and atypical way of working and of being at work. We outline a way beyond individualist or institutional approaches to do justice to the current complex transformation of the profession. We propose a framework to bring together these approaches in a dialectic attempt to move through and beyond journalism as it has traditionally been conceptualized and practiced, allowing for a broader definition and understanding of the myriad of practices that make up journalism.

Beyond journalism: Theorizing the transformation of journalism

PubMed Central

Deuze, Mark; Witschge, Tamara

2017-01-01

Journalism has enjoyed a rich and relatively stable history of professionalization. Scholars coming from a variety of disciplines have theorized this history, forming a consistent body of knowledge codified in national and international handbooks and canonical readers. However, recent work and analysis suggest that the supposed core of journalism and the assumed consistency of the inner workings of news organizations are problematic starting points for journalism studies. In this article, we challenge the consensual (self-)presentation of journalism – in terms of its occupational ideology, its professional culture, and its sedimentation in routines and organizational structures (cf. the newsroom) in the context of its reconfiguration as a post-industrial, entrepreneurial, and atypical way of working and of being at work. We outline a way beyond individualist or institutional approaches to do justice to the current complex transformation of the profession. We propose a framework to bring together these approaches in a dialectic attempt to move through and beyond journalism as it has traditionally been conceptualized and practiced, allowing for a broader definition and understanding of the myriad of practices that make up journalism. PMID:29417952

On making laboratory report work more meaningful through criterion-based evaluation.

PubMed

Naeraa, N

1987-05-01

The purpose of this work was to encourage students to base their laboratory report work on guidelines reflecting a quality criterion set, previously derived from the functional role of the various sections in scientific papers. The materials were developed by a trial-and-error approach and comprise learning objectives, a parallel structure of manual and reports, general and specific report guidelines and a new common starting experiment. The principal contents are presented, followed by an account of the author's experience with them. Most of the author's students now follow the guidelines. Their conclusions are affected by difficulties in adjusting expected results with due regard to the specific conditions of the experimental subject or to their own deviations from the experimental or analytical procedures prescribed in the manual. Also, problems in interpreting data unbiased by explicit expectations are evident, although a clear distinction between expected and actual results has been helpful for them in seeing the relationship between experiments and textbook contents more clearly, and thus in understanding the hypothetico-deductive approach.

Programming an interim report on the SETL project. Part I: generalities. Part II: the SETL language and examples of its use

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

Schwartz, J T

1975-06-01

A summary of work during the past several years on SETL, a new programming language drawing its dictions and basic concepts from the mathematical theory of sets, is presented. The work was started with the idea that a programming language modeled after an appropriate version of the formal language of mathematics might allow a programming style with some of the succinctness of mathematics, and that this might ultimately enable one to express and experiment with more complex algorithms than are now within reach. Part I discusses the general approach followed in the work. Part II focuses directly on the detailsmore » of the SETL language as it is now defined. It describes the facilities of SETL, includes short libraries of miscellaneous and of code optimization algorithms illustrating the use of SETL, and gives a detailed description of the manner in which the set-theoretic primitives provided by SETL are currently implemented. (RWR)« less

Twenty Five Years in Cheminformatics - A Career Path ...

EPA Pesticide Factsheets

Antony Williams is a Computational Chemist at the US Environmental Protection Agency in the National Center for Computational Toxicology. He has been involved in cheminformatics and the dissemination of chemical information for over twenty-five years. He has worked for a Fortune 500 company (Eastman Kodak), in two successful start-ups (ACD/Labs and ChemSpider), for the Royal Society of Chemistry (in publishing) and, now, at the EPA. Throughout his career path he has experienced multiple diverse work cultures and focused his efforts on understanding the needs of his employers and the often unrecognized needs of a larger community. Antony will provide a short overview of his career path and discuss the various decisions that helped motivate his change in career from professional spectroscopist to website host and innovator, to working for one of the world's foremost scientific societies and now for one of the most impactful government organizations in the world. Invited Presentation at ACS Spring meeting at CINF: Careers in Chemical Information session

Eosinophilic airway disease in a patient with a negative skin prick test, but a positive patch test with platinum salts--implications for medical surveillance.

PubMed

Merget, Rolf; Fartasch, Manigé; Sander, Ingrid; Van Kampen, Vera; Raulf, Monika; Brüning, Thomas

2015-09-01

We present the case of a 52-year-old woman with a topic dermatitis since adolescence who developed work-related hand eczema, cough and runny nose 12 years after she had started working as a laboratory technician at a precious metals refinery. While skin prick test with sodium hexachloroplatinate (SPTPt ) was negative, patch testing with ammonium tetrachloroplatinate was positive after 24, 48, 72, and 96 hr. Inhalation challenge with sodium hexachloroplatinate yielded cough, mild shortness of breath, and a maximal decrease of FEV1 of 8% from baseline 24 hr after the challenge. Significant increases of bronchial hyperresponsiveness, exhaled nitric monoxide and sputum eosinophils were documented after the challenge. We conclude that eosinophilic airway disease due to platinum salts may occur in SPTPt negative subjects. Both, patch testing and inhalation challenge with platinum salts should be considered in SPT negative subjects with occupational exposure to precious metal salts and work-related allergic symptoms. © 2015 Wiley Periodicals, Inc.

76 FR 45820 - Food Safety Modernization Act Domestic and Foreign Facility Reinspections, Recall, and Importer...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-08-01

... of sick leave 80 10 days of training 80 2 hours of meetings per week 80 Net Supported Direct FDA Work... implementing these user fees in FY 2013. II. Estimating the Average Cost of a Supported Direct FDA Work Hour... Direct Work Hour in FY 2010 In general, the starting point for estimating the full cost per direct work...

On the Surface Formation of NH3 and HNCO in Dark Molecular Clouds - Searching for Wöhler Synthesis in the Interstellar Medium

NASA Astrophysics Data System (ADS)

Fedoseev, Gleb; Lamberts, Thanja; Linnartz, Harold; Ioppolo, Sergio; Zhao, Dongfeng

Despite its potential to reveal the link between the formation of simple species and more complex molecules (e.g., amino acids), the nitrogen chemistry of the interstellar medium (ISM) is still poorly understood. Ammonia (NH _{3}) is one of the few nitrogen-bearing species that have been observed in interstellar ices toward young stellar objects (YSOs) and quiescent molecular clouds. The aim of the present work is to experimentally investigate surface formation routes of NH _{3} and HNCO through non-energetic surface reactions in interstellar ice analogues under fully controlled laboratory conditions and at astrochemically relevant cryogenic temperatures. This study focuses on the formation of NH _{3} and HNCO in CO-rich (non-polar) interstellar ices that simulate the CO freeze-out stage in interstellar dark cloud regions, well before thermal and energetic processing start to become predominant. Our work confirms the surface formation of ammonia through the sequential addition of three hydrogen/deuterium atoms to a single nitrogen atom at low temperature. The H/D fractionation of the formed ammonia is also shown. Furthermore, we show the surface formation of solid HNCO through the interaction of CO molecules with NH radicals - one of the intermediates in the formation of solid NH _{3}. Finally, we discuss the implications of HNCO in astrobiology, as a possible starting point for the formation of more complex prebiotic species.

The Influence of Unpaid Work on the Transition Out of Full-Time Paid Work

PubMed Central

Carr, Dawn C.

2013-01-01

Purpose: Continued employment after retirement and engagement in unpaid work are both important ways of diminishing the negative economic effects of the retirement of baby boomer cohorts on society. Little research, however, examines the relationship between paid and unpaid work at the transition from full-time work. Using a resource perspective framework this study examines how engagement in unpaid work prior to and at the transition from full-time work influences whether individuals partially or fully retire. Design and Methods: This study used a sample of 2,236 Americans between the ages 50 and 68, who were interviewed between 1998 and 2008. Logistic regression was used to estimate transitioning into partial retirement (relative to full retirement) after leaving full-time work. Results: We found that the odds of transitioning into part-time work were increased by continuous volunteering (78%) and reduced by starting parental (84%), grandchild (41%), and spousal (90%) caregiving and unaffected by all other patterns of engagement in unpaid work. Implications: Our findings suggest that volunteering is complementary with a transition to part-time work, and starting a new caregiving role at this transitioncreates a barrier to continued employment. In order to provide workers the opportunity to engage in the work force longer at the brink of retirement, it may be necessary to increase the support mechanisms for those who experience new caregiving responsibilities. PMID:22859436

Fluid losses and hydration status of industrial workers under thermal stress working extended shifts

PubMed Central

Brake, D; Bates, G

2003-01-01

Aims: To assess whether workers under significant thermal stress necessarily dehydrated during their exposure and whether "involuntary dehydration" was inevitable, as supported by ISO 9866 and other authorities. Other objectives were to quantify sweat rates against recommended occupational limits, to develop a dehydration protocol to assist with managing heat exposures, and to understand the role of meal breaks on extended shifts in terms of fluid replacement. Methods: A field investigation to examine the fluid consumption, sweat rates, and changes in the hydration state of industrial workers on extended (10, 12, and 12.5 hour) shifts under significant levels of thermal stress (wet bulb globe temperature (WBGT) >28°C) was conducted on 39 male underground miners. Urinary specific gravity was measured before, during, and at the completion of the working shift. Environmental conditions were measured hourly during the shift. Fluid replacement was measured during the working periods and during the meal breaks. Results: Average environmental conditions were severe (WBGT 30.9°C (SD 2.0°C), range 25.7–35.2°C). Fluid intake averaged 0.8 l/h during exposure (SD 0.3 l/h, range 0.3–1.5 l/h). Average urinary specific gravity at start, mid, and end of shift was 1.0251, 1.0248, and 1.0254 respectively; the differences between start and mid shift, mid and end shift, and start and end shift were not significant. However, a majority of workers were coming to work in a moderately hypohydrated state (average urinary specific gravity 1.024 (SD 0.0059)). A combined dehydration and heat illness protocol was developed. Urinary specific gravity limits of 1.022 for start of shift and 1.030 for end of shift were selected; workers exceeding these values were not allowed into the workplace (if the start of shift limit was exceeded) or were retested prior to their next working shift (if the end of shift limit was exceeded). A target of 1.015 as a euhydrated state for start of shift was adopted for workforce education. Conclusions: This study found that "involuntary dehydration" did not occur in well informed workers, which has implications for heat stress standards that do not make provision for full fluid replacement during heat exposure. Fluid replacement during meal breaks was not significantly increased above fluid replacement rates during work time, with implications for the duration and spacing of meal breaks on long shifts. Testing of urinary specific gravity was found to be a good indication of hydration status and a practical method of improving workforce awareness and understanding of this important risk factor. Approximately 10 000 dehydration tests have been conducted under the dehydration protocol in a workforce of 2000 persons exposed to thermal stress and has proved practical and reliable. PMID:12554834

Progress update of NASA's free-piston Stirling space power converter technology project

NASA Technical Reports Server (NTRS)

Dudenhoefer, James E.; Winter, Jerry M.; Alger, Donald

1992-01-01

A progress update is presented of the NASA LeRC Free-Piston Stirling Space Power Converter Technology Project. This work is being conducted under NASA's Civil Space Technology Initiative (CSTI). The goal of the CSTI High Capacity Power Element is to develop the technology base needed to meet the long duration, high capacity power requirements for future NASA space initiatives. Efforts are focused upon increasing system power output and system thermal and electric energy conversion efficiency at least five fold over current SP-100 technology, and on achieving systems that are compatible with space nuclear reactors. This paper will discuss progress toward 1050 K Stirling Space Power Converters. Fabrication is nearly completed for the 1050 K Component Test Power Converter (CTPC); results of motoring tests of the cold end (525 K), are presented. The success of these and future designs is dependent upon supporting research and technology efforts including heat pipes, bearings, superalloy joining technologies, high efficiency alternators, life and reliability testing, and predictive methodologies. This paper will compare progress in significant areas of component development from the start of the program with the Space Power Development Engine (SPDE) to the present work on CTPC.

Final Technical Report: Sparse Grid Scenario Generation and Interior Algorithms for Stochastic Optimization in a Parallel Computing Environment

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

Mehrotra, Sanjay

2016-09-07

The support from this grant resulted in seven published papers and a technical report. Two papers are published in SIAM J. on Optimization [87, 88]; two papers are published in IEEE Transactions on Power Systems [77, 78]; one paper is published in Smart Grid [79]; one paper is published in Computational Optimization and Applications [44] and one in INFORMS J. on Computing [67]). The works in [44, 67, 87, 88] were funded primarily by this DOE grant. The applied papers in [77, 78, 79] were also supported through a subcontract from the Argonne National Lab. We start by presenting ourmore » main research results on the scenario generation problem in Sections 1–2. We present our algorithmic results on interior point methods for convex optimization problems in Section 3. We describe a new ‘central’ cutting surface algorithm developed for solving large scale convex programming problems (as is the case with our proposed research) with semi-infinite number of constraints in Section 4. In Sections 5–6 we present our work on two application problems of interest to DOE.« less

Numerical studies of the use of thin high-Z layers for reducing laser imprint in direct-drive inertial-fusion targets

NASA Astrophysics Data System (ADS)

Bates, Jason; Schmitt, Andrew; Karasik, Max; Obenschain, Steve

2012-10-01

Using the FAST code, we present numerical studies of the effect of thin metallic layers with high atomic number (high-Z) on the hydrodynamics of directly-driven inertial-confinement-fusion (ICF) targets. Previous experimental work on the NIKE Laser Facility at the U.S. Naval Research Laboratory demonstrated that the use of high-Z layers may be efficacious in reducing laser non-uniformities imprinted on the target during the start-up phase of the implosion. Such a reduction is highly desirable in a direct-drive ICF scenario because laser non-uniformities seed hydrodynamic instabilities that can amplify during the implosion process, prevent uniform compression and spoil high gain. One of the main objectives of the present work is to assess the utility of high-Z layers for achieving greater laser uniformity in polar-drive target designs planned for the National Ignition Facility. To address this problem, new numerical routines have recently been incorporated in the FAST code, including an improved radiation-transfer package and a three-dimensional ray-tracing algorithm. We will discuss these topics, and present initial simulation results for high-Z planar-target experiments planned on the NIKE Laser Facility later this year.

Responses to highly active antiretroviral therapy and clinical events in patients with a low CD4 cell count: late presenters vs. late starters.

PubMed

Waters, L; Fisher, M; Anderson, J; Wood, C; Delpech, V; Hill, T; Walsh, J; Orkin, C; Bansi, L; Gompels, M; Phillips, A; Johnson, M; Gilson, R; Easterbrook, P; Leen, C; Porter, K; Gazzard, B; Sabin, C

2011-05-01

We investigated whether adverse responses to highly active antiretroviral therapy (HAART) associated with late HIV presentation are secondary to low CD4 cell count per se or other confounding factors. A longitudinal analysis of the UK Collaborative HIV Cohort (CHIC) Study of individuals starting HAART in 1998-2007 was carried out, comparing late presenters (presenting/starting HAART at a CD4 count <200 cells/μL) with late starters (presenting at a CD4 count>350 cells/μL; starting HAART at a CD4 count<200 cells/μL), using 'ideal starters' (presenting at a CD4 count>350 cells/μL; starting HAART at a CD4 count of 200-350 cells/μL) as a comparator. Virological, immunological and clinical (new AIDS event/death) outcomes at 48 and 96 weeks were analysed, with the analysis being limited to those remaining on HAART for>3 months. A total of 4978 of 9095 individuals starting first-line HAART with HIV RNA>500 HIV-1 RNA copies/mL were included in the analysis: 2741 late presenters, 947 late starters and 1290 ideal starters. Late presenters were more commonly female, heterosexual and Black African. Most started nonnucleoside reverse transcriptase inhibitors (NNRTIs); 48-week virological suppression was similar in late presenters and starters (and marginally lower than in ideal starters); by week 96 differences were reduced and nonsignificant. The median CD4 cell count increase in late presenters was significantly lower than that in late starters (weeks 48 and 96). During year 1, new clinical events were more frequent for late presenters [odds ratio (OR) 2.04; 95% confidence interval (CI) 1.19-3.51; P=0.01]; by year 2, event rates were similar in all groups. Amongst patients who initiate, and remain on, HAART, late presentation is associated with lower rates of virological suppression, blunted CD4 cell count increases and more clinical events compared with late starters in year 1, but similar clinical and immunological outcomes by year 2 to those of both late and ideal starters. Differences between late presenters and late starters suggest that factors other than CD4 cell count alone may be driving adverse treatment outcomes in late-presenting individuals.

Costs of landslides and floods in XX Century in a Calabrian town starting from the data stored in the Historical Archive of IRPI (Cosenza)

NASA Astrophysics Data System (ADS)

Giampa', Vincenzo; Pasqua, A. Aurora; Petrucci, Olga

2015-04-01

The paper firstly presents the historical archive of Cosenza IRPI Section and the historical database that has been built basing on the data contained in it. Then, an application of these data to Catanzaro, the town that is the administrative center of Calabria region (Southern Italy), is presented. The gathering of historical data on past floods and landslides in Cosenza IRPI Section has been started since 1996, and it is still in progress. In 2005, some donations coming from regional and municipal Public Works offices greatly increased the documental corpus, and required a more incisive classification and management that led us to organize the documents in a real historical archive. Documents were sorted according to municipalities they concerned. In this way, for each of the 409 municipalities of Calabria a set of documents, maps and images was available. Collected documents mainly concern damage caused by the occurrence, since XIX century, of phenomena as floods, flash floods and landslides triggered by extreme meteorological events, or even damage caused by strong earthquakes. At the beginning of 2014, the central office of IRPI (Perugia) funded a project aiming to the digitalization of the archive and the subsequent publication of it on a web-platform. In this paper, the procedure adopted to build the archive and implement the database is described. Then, the elaboration of the historical series of data on Catanzaro town, which has been frequently damaged by rainfall-induced landslides and floods, is also presented. Basing on the documents coming from the archive of Ministry Public Works and stored in our Historical Archive, an assessment of costs related to damage that during XX century affected the houses of this town has been performed. The research pointed out the types of most damaging phenomena, the municipal sectors most frequently damaged, and the evolution of damaged areas throughout the years according to the increasing urbanization.

Process of videotape making: presentation design, software, and hardware

NASA Astrophysics Data System (ADS)

Dickinson, Robert R.; Brady, Dan R.; Bennison, Tim; Burns, Thomas; Pines, Sheldon

1991-06-01

The use of technical video tape presentations for communicating abstractions of complex data is now becoming commonplace. While the use of video tapes in the day-to-day work of scientists and engineers is still in its infancy, their use as applications oriented conferences is now growing rapidly. Despite these advancements, there is still very little that is written down about the process of making technical videotapes. For printed media, different presentation styles are well known for categories such as results reports, executive summary reports, and technical papers and articles. In this paper, the authors present ideas on the topic of technical videotape presentation design in a format that is worth referring to. They have started to document the ways in which the experience of media specialist, teaching professionals, and character animators can be applied to scientific animation. Software and hardware considerations are also discussed. For this portion, distinctions are drawn between the software and hardware required for computer animation (frame at a time) productions, and live recorded interaction with a computer graphics display.

Notification: Preliminary Research to Evaluate Hazardous Waste Passing Through Publicly Owned Treatment Works

EPA Pesticide Factsheets

March 13, 2013. The EPA's OIG plans to start preliminary research to evaluate the effectiveness of the EPA’s programs in preventing and addressing contamination of surface water from hazardous wastes passing through publicly owned treatment works.

A brief introduction to the model microswimmer Chlamydomonas reinhardtii

NASA Astrophysics Data System (ADS)

Jeanneret, Raphaël; Contino, Matteo; Polin, Marco

2016-11-01

The unicellular biflagellate green alga Chlamydomonas reinhardtii has been an important model system in biology for decades, and in recent years it has started to attract growing attention also within the biophysics community. Here we provide a concise review of some of the aspects of Chlamydomonas biology and biophysics most immediately relevant to physicists that might be interested in starting to work with this versatile microorganism.

The Head Start Child Development and Early Learning Framework: Promoting Positive Outcomes in Early Childhood Programs Serving Children 3-5 Years Old

ERIC Educational Resources Information Center

Office of Head Start, US Department of Health and Human Services, 2010

2010-01-01

This report presents a revision of the Head Start Child Outcomes Framework (2000), renamed The Head Start Child Development and Learning Framework: Promoting Positive Outcomes in Early Childhood Programs Serving Children 3-5 Years Old. The Framework outlines the essential areas of development and learning that are to be used by Head Start programs…

Working Memory and Individual Differences in Mathematics Achievement: A Longitudinal Study from First Grade to Second Grade

ERIC Educational Resources Information Center

De Smedt, Bert; Janssen, Rianne; Bouwens, Kelly; Verschaffel, Lieven; Boets, Bart; Ghesquiere, Pol

2009-01-01

This longitudinal study examined the relationship between working memory and individual differences in mathematics. Working memory measures, comprising the phonological loop, the visuospatial sketchpad, and the central executive, were administered at the start of first grade. Mathematics achievement was assessed 4 months later (at the middle of…

The Changing Landscape of Federal Innovation: Implications for the Navy

DTIC Science & Technology

2012-06-06

PLAY A CARD NOW: Help us identify 1he worst. Start now, work fast, work toge1her. ------- 2000 invites 805 registered players 4484 idea cards played...Sounding Board Or Not ema1 and people can work weD Do we want iTunes or confusion? S&T is just one piece Crowdsource Broker NWDC? Vetting Sorting

Dialectics Instead of Dichotomy: Perspectives on the Twin Ambitions Movement

ERIC Educational Resources Information Center

Eriksson, Lisbeth

2013-01-01

This article discusses the mobilizing work of a disability organization, at the local chapter level. I have spent about a year following the work of a chapter, mainly through contacts, conversations and interviews with the persons who are active on its board. The analysis of the chapter's work takes as its starting point two traditions that…

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

Gabriele Hegerl and IDAG members

This report focuses on the period to 2010 including, after which the new round of the International Detection and Attribution group, led by Claudia Tebaldi, started. In 2011, some final work on report has been done, and outstanding tasks completed. However, most participants are now working on the new grant and hence the citations and work reported is focusing largely on the regular grant period.

Organizational Leadership and Work-Life Integration: Insights from Three Generations of Men

ERIC Educational Resources Information Center

Smith, Deborah N.; Roebuck, Deborah; Elhaddaoui, Terri

2016-01-01

The literature has traditionally portrayed work-life balance as a women's issue. However, working men, specifically those classified as Generation X and Generation Y, are starting to speak up and share that they too are struggling with integrating all aspects of their lives. Workers, as well as organizations can benefit when employees have a…

Continuing Education for the Emerging Social Work Profession in China: The Experiment in Shenzhen

ERIC Educational Resources Information Center

Lam, Ching Man; Yan, Miu Chung; Liang, Yan

2016-01-01

In-service training as a form of continuing professional education (CPE) is important for social work professionals to maintain their skills and enhance their knowledge for publicly accountable practice. These goals are concerns in Mainland China, which has experienced rapid development in social work since economic reforms started in the early…

Social Work Online Education: A Model for Getting Started and Staying Connected

ERIC Educational Resources Information Center

Moore, Sharon E.; Golder, Seana; Sterrett, Emma; Faul, Anna C.; Yankeelov, Pam; Weathers Mathis, Lynetta; Barbee, Anita P.

2015-01-01

Social work education has been greatly affected by ongoing technological advances in society at large and in the academy. Options for instructional delivery have been broadened tremendously. The University of Louisville is the first in Kentucky to put its master's of social work degree fully online, with a first cohort admitted in 2012. The…

The World of Work; Bay Area Reference Center Workshop, August 29 and 30, 1973.

ERIC Educational Resources Information Center

San Francisco Public Library, CA. Bay Area Reference Center.

Eleven papers from a two-day workshop for librarians explore current trends in work in America. Topics covered include how to discover job skills and market, mid-career changes, affirmative action, starting your own business, freelance researching, working for social change, and the job market. Bibliographies and kit materials for library patrons…

Vortex Formation During Unsteady Boundary-Layer Separation

NASA Astrophysics Data System (ADS)

Das, Debopam; Arakeri, Jaywant H.

1998-11-01

Unsteady laminar boundary-layer separation is invariably accompanied by the formation of vortices. The aim of the present work is to study the vortex formation mechanism(s). An adverse pressure gradient causing a separation can be decomposed into a spatial component ( spatial variation of the velocity external to the boundary layer ) and a temporal component ( temporal variation of the external velocity ). Experiments were conducted in a piston driven 2-D water channel, where the spatial component could be be contolled by geometry and the temporal component by the piston motion. We present results for three divergent channel geometries. The piston motion consists of three phases: constant acceleration from start, contant velocity, and constant deceleration to stop. Depending on the geometry and piston motion we observe different types of unsteady separation and vortex formation.

Administration for Children and Families: Early Head Start

ERIC Educational Resources Information Center

US Department of Health and Human Services, 2010

2010-01-01

This paper presents an overview of the Early Head Start program. The objective of the Early Head Start program is to enhance the cognitive, social and emotional development of low-income children, including children on federally-recognized reservations and children of migratory farm workers, through the provision of comprehensive health,…

Colorado Even Start. 1998-1999 Progress Report.

ERIC Educational Resources Information Center

Anderson, Beckie

Even Start programs integrate early childhood education, adult literacy or basic education, parenting education and support, and parent and child time to help break the cycle of poverty and illiteracy. This report describes the Even Start program in Colorado, and includes evaluation questions and methods. The report presents evaluation findings…

Colorado Even Start. 1997-1998 Progress Report.

ERIC Educational Resources Information Center

Anderson, Beckie

Even Start programs integrate early childhood education, adult literacy or basic education, parenting education and support, and parent and child time together to help break the cycle of poverty and illiteracy. This report describes the Even Start program in Colorado, including evaluation questions and methods. The report also presents evaluation…

Colorado Even Start Progress Report, 2001-2002.

ERIC Educational Resources Information Center

Anderson, Beckie

Even Start programs integrate early childhood education, adult literacy or basic education, parenting education and support, and parent and child time together to help break the cycle of poverty and illiteracy. This progress report describes the Even Start program in Colorado and presents evaluation findings from the 2001-2002 implementation year,…

The Physics of Tokamak Start-up

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

D. Mueller

Tokamak start-up on present-day devices usually relies on inductively induced voltage from a central solenoid. In some cases inductive startup is assisted with auxiliary power from electron cyclotron radio frequency heating. ITER, the National Spherical Torus eXperiment Upgrade and JT60, now under construction, will make use of the understanding gained from present-day devices to ensure successful start-up. Design of a spherical tokamak (ST) with DT capability for nuclear component testing would require an alternative to a central solenoid because the small central column in an ST has insufficient space to provide shielding for the insulators in the solenoid. Alternative start-upmore » techniques such as induction using outer poloidal field coils, electron Bernstein wave start-up, coaxial helicity injection and point source helicity injection have been used with success, but require demonstration of scaling to higher plasma current.« less

The physics of tokamak start-up

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

Mueller, D.

Tokamak start-up on present-day devices usually relies on inductively induced voltage from a central solenoid. In some cases, inductive startup is assisted with auxiliary power from electron cyclotron radio frequency heating. International Thermonuclear Experimental Reactor, the National Spherical Torus Experiment Upgrade and JT60, now under construction, will make use of the understanding gained from present-day devices to ensure successful start-up. Design of a spherical tokamak (ST) with DT capability for nuclear component testing would require an alternative to a central solenoid because the small central column in an ST has insufficient space to provide shielding for the insulators in themore » solenoid. Alternative start-up techniques such as induction using outer poloidal field coils, electron Bernstein wave start-up, coaxial helicity injection, and point source helicity injection have been used with success, but require demonstration of scaling to higher plasma current.« less

MO-A-213-00: Economics Update

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

NONE

2015-06-15

The purpose of this session is to introduce attendees to the healthcare reimbursement system and how it applies to the clinical work of a Medical Physicist. This will include general information about the different categories of payers and payees, how work is described by CPT© codes, and how various payers set values for this work in different clinical settings. 2015 is a year of significant changes to the payment system. Many CPT© codes have been deleted and replaced with new CPT© codes. These codes define some of the most common work performed in our clinics including treatment planning and delivery.more » This presentation will describe what work is encompassed in these codes and will give attendees an overview of the changes for 2015 as they apply to radiation oncology. Finally, some insight into what can be expected during 2016 will be presented. This includes what information is typically released by the Centers for Medicaid & Medicare Services (CMS) during the year and how we as an organization respond. This will include ways members can interact with the AAPM professional economics committee and other resources members may find helpful. Learning Objectives: Basics of how Medicare is structured and how reimbursement rates are set. Basic understanding of proposed changes to the 2016 Medicare rules. What resources are available from the AAPM and how to interact with the professional economics committee. Ownership in pxAlpha, LLC, a medical device start up company.« less

MO-A-213-01: 2015 Economics Update Part 1

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

Dirksen, B.

2015-06-15

The purpose of this session is to introduce attendees to the healthcare reimbursement system and how it applies to the clinical work of a Medical Physicist. This will include general information about the different categories of payers and payees, how work is described by CPT© codes, and how various payers set values for this work in different clinical settings. 2015 is a year of significant changes to the payment system. Many CPT© codes have been deleted and replaced with new CPT© codes. These codes define some of the most common work performed in our clinics including treatment planning and delivery.more » This presentation will describe what work is encompassed in these codes and will give attendees an overview of the changes for 2015 as they apply to radiation oncology. Finally, some insight into what can be expected during 2016 will be presented. This includes what information is typically released by the Centers for Medicaid & Medicare Services (CMS) during the year and how we as an organization respond. This will include ways members can interact with the AAPM professional economics committee and other resources members may find helpful. Learning Objectives: Basics of how Medicare is structured and how reimbursement rates are set. Basic understanding of proposed changes to the 2016 Medicare rules. What resources are available from the AAPM and how to interact with the professional economics committee. Ownership in pxAlpha, LLC, a medical device start up company.« less

MO-A-213-02: 2015 Economics Update Part 2

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

Fontenot, J.

2015-06-15

The purpose of this session is to introduce attendees to the healthcare reimbursement system and how it applies to the clinical work of a Medical Physicist. This will include general information about the different categories of payers and payees, how work is described by CPT© codes, and how various payers set values for this work in different clinical settings. 2015 is a year of significant changes to the payment system. Many CPT© codes have been deleted and replaced with new CPT© codes. These codes define some of the most common work performed in our clinics including treatment planning and delivery.more » This presentation will describe what work is encompassed in these codes and will give attendees an overview of the changes for 2015 as they apply to radiation oncology. Finally, some insight into what can be expected during 2016 will be presented. This includes what information is typically released by the Centers for Medicaid & Medicare Services (CMS) during the year and how we as an organization respond. This will include ways members can interact with the AAPM professional economics committee and other resources members may find helpful. Learning Objectives: Basics of how Medicare is structured and how reimbursement rates are set. Basic understanding of proposed changes to the 2016 Medicare rules. What resources are available from the AAPM and how to interact with the professional economics committee. Ownership in pxAlpha, LLC, a medical device start up company.« less

Bigger is Better, but at What Cost? Estimating the Economic Value of Incremental Data Assets.

PubMed

Dalessandro, Brian; Perlich, Claudia; Raeder, Troy

2014-06-01

Many firms depend on third-party vendors to supply data for commercial predictive modeling applications. An issue that has received very little attention in the prior research literature is the estimation of a fair price for purchased data. In this work we present a methodology for estimating the economic value of adding incremental data to predictive modeling applications and present two cases studies. The methodology starts with estimating the effect that incremental data has on model performance in terms of common classification evaluation metrics. This effect is then translated into economic units, which gives an expected economic value that the firm might realize with the acquisition of a particular data asset. With this estimate a firm can then set a data acquisition price that targets a particular return on investment. This article presents the methodology in full detail and illustrates it in the context of two marketing case studies.

Patient-centred screening for primary immunodeficiency, a multi-stage diagnostic protocol designed for non-immunologists: 2011 update

PubMed Central

de Vries, E

2012-01-01

Members of the European Society for Immunodeficiencies (ESID) and other colleagues have updated the multi-stage expert-opinion-based diagnostic protocol for non-immunologists incorporating newly defined primary immunodeficiency diseases (PIDs). The protocol presented here aims to increase the awareness of PIDs among doctors working in different fields. Prompt identification of PID is important for prognosis, but this may not be an easy task. The protocol therefore starts from the clinical presentation of the patient. Because PIDs may present at all ages, this protocol is aimed at both adult and paediatric physicians. The multi-stage design allows cost-effective screening for PID of the large number of potential cases in the early phases, with more expensive tests reserved for definitive classification in collaboration with a specialist in the field of immunodeficiency at a later stage. PMID:22132890

The modern instrumentation used for monitoring and controlling the main parameters of the regenerative electro-mechano-hydraulic drive systems

NASA Astrophysics Data System (ADS)

Cristescu, Corneliu; Drumea, Petrin; Krevey, Petrica

2009-01-01

In this work is presented the modern instrumentation used for monitoring and controlling the main parameters for one regenerative drive system, used to recovering the kinetic energy of motor vehicles, lost in the braking phase, storing and using this energy in the starting or accelerating phases. Is presented a Romanian technical solution for a regenerative driving system, based on a hybrid solution containing a hydro-mechanic module and an existing thermal motor drive, all conceived as a mechatronics system. In order to monitoring and controlling the evolution of the main parameters, the system contains a series of sensors and transducers that provide the moment, rotation, temperature, flow and pressure values. The main sensors and transducers of the regenerative drive system, their principal features and tehnical conecting solutions are presented in this paper, both with the menaging electronic and informational subsystems.

Experimental investigation of domestic micro-CHP based on the gas boiler fitted with ORC module

NASA Astrophysics Data System (ADS)

Wajs, Jan; Mikielewicz, Dariusz; Bajor, Michał; Kneba, Zbigniew

2016-09-01

The results of investigations conducted on the prototype of vapour driven micro-CHP unit integrated with a gas boiler are presented. The system enables cogeneration of heat and electric energy to cover the energy demand of a household. The idea of such system is to produce electricity for own demand or for selling it to the electric grid - in such situation the system user will became the prosumer. A typical commercial gas boiler, additionally equipped with an organic Rankine cycle (ORC) module based on environmentally acceptable working fluid can be regarded as future generation unit. In the paper the prototype of innovative domestic cogenerative ORC system, consisting of a conventional gas boiler and a small size axial vapour microturbines (in-house designed for ORC and the commercially available for Rankine cycle (RC)), evaporator and condenser were scrutinised. In the course of study the fluid working temperatures, rates of heat, electricity generation and efficiency of the whole system were obtained. The tested system could produce electricity in the amount of 1 kWe. Some preliminary tests were started with water as working fluid and the results for that case are also presented. The investigations showed that domestic gas boiler was able to provide the saturated/superheated ethanol vapour (in the ORC system) and steam (in the RC system) as working fluids.

Partners in Creating a 21st Century Head Start. Hearing on Detailing the Recommendations Made in the Report of the Committee on Head Start Quality and Expansion in Preparation for the 1994 Head Start Reauthorization Process, before the Committee on Labor and Human Resources. United States Senate. One Hundred Third Congress, First Session.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. Senate Committee on Labor and Human Resources.

This hearing examined issues concerning Project Head Start quality and expansion. Testimony was offered by: (1) Senator Edward Kennedy, who discussed the importance of strengthening Head Start; (2) Mary Jo Bane, Assistant Secretary for the Administration for Children and Families, Department of Health and Human Services, who presented highlights…

A study of start-up characteristics of a potassium heat pipe from the frozen state

NASA Technical Reports Server (NTRS)

Jang, Jong Hoon

1992-01-01

The start up characteristics of a potassium heat pipe were studied both analytically and experimentally. Using the radiation heat transfer mode the heat pipe was tested in a vacuum chamber. The transition temperature calculated for potassium was then compared with the experimental results of the heat pipe with various heat inputs. These results show that the heat pipe was inactive until it reached the transition temperature. In addition, during the start up period, the evaporator experienced dry-out with a heat input smaller than the capillary limit calculated at the steady state. However, when the working fluid at the condensor was completely melted, the evaporation was rewetted without external aid. The start up period was significantly reduced with a large heat input.

Start-up and Self-sustain Test of 500 W Ultra-Micro Gas Turbine Generator

NASA Astrophysics Data System (ADS)

Seo, Jeong Min; Park, Jun Young; Seog Choi, Bum

2013-12-01

This paper provides the performance test for start-up and self-sustaining of 500W ultra-micro gas turbine (UMGT) generator. Each component of UMGT, a centrifugal compressor, a radial turbine, an annular combustor and a shaft is already designed, manufactured and tested to meet design requirements in previous researches. However, they are not tested to work in an integrate system. Currently, integrated test unit with a compressor, a combustor and a turbine, is developed to find the proper condition of start-up and self-sustain. Ignition sequence depending on rotating speed is designed. Performance test for start-up and self-sustain is designed based on the ignition possible condition. An air impingement starter and a hot bulb inginer are applied. LPG is used as main fuel.