WorldWideScience

Sample records for residence hall personalization

  1. Facility Focus: Residence Halls.

    Science.gov (United States)

    College Planning & Management, 2003

    2003-01-01

    Describes four examples of residence hall design, one renovation and three new residence halls, that exemplify design principles that meet student and institutional requirements. The examples are at (1) the University of Illinois at Chicago; (2) Bowdoin College; (3) Muhlenberg College; and (4) Spring Arbor University. (SLD)

  2. Invitational Engineering in the Residence Halls.

    Science.gov (United States)

    Murphy, Jack; Purkey, William

    1981-01-01

    Presents various ways in which a residence hall environment may be specifically engineered to encourage individual participation in the process of education. Invitational engineering is defined as one way to transpose psychological principles to residence halls so they contribute to the developmental life of students. (RC)

  3. 20th Annual Residence Hall Construction Report

    Science.gov (United States)

    Agron, Joe

    2009-01-01

    Even in difficult economic times, colleges and universities continue to invest in residence hall construction projects as a way to attract new students and keep existing ones on campus. According to data from "American School & University"'s 20th annual Residence Hall Construction Report, the median new project completed in 2008 was…

  4. Judicious Leadership for Residence Hall Living.

    Science.gov (United States)

    Gathercoal, Forrest

    This book presents a theory of judicious leadership for residence hall management that advocates the creation of an ethical and educational perspective based on the U.S. Bill of Rights. It argues that by recognizing college students' citizenship rights, providing them an opportunity to experience individual liberties, and helping them to…

  5. A NACURH White Paper on Residence Hall Government.

    Science.gov (United States)

    Wyatt, Kevin W.; Stoner, Kenneth L.

    1984-01-01

    Presents a white paper on residence hall government, summarizing fundamental principles in organizing and maintaining a residence hall association on campus. These include determining needs, identifying support, obtaining income, ensuring effective leadership, and developing system maintenance. (JAC)

  6. Personal and household hygiene, environmental contamination, and health in undergraduate residence halls in New York City, 2011.

    Science.gov (United States)

    Miko, Benjamin A; Cohen, Bevin; Haxall, Katharine; Conway, Laurie; Kelly, Nicole; Stare, Dianne; Tropiano, Christina; Gilman, Allan; Seward, Samuel L; Larson, Elaine

    2013-01-01

    While several studies have documented the importance of hand washing in the university setting, the added role of environmental hygiene remains poorly understood. The purpose of this study was to characterize the personal and environmental hygiene habits of college students, define the determinants of hygiene in this population, and assess the relationship between reported hygiene behaviors, environmental contamination, and health status. 501 undergraduate students completed a previously validated survey assessing baseline demographics, hygiene habits, determinants of hygiene, and health status. Sixty survey respondents had microbiological samples taken from eight standardized surfaces in their dormitory environment. Bacterial contamination was assessed using standard quantitative bacterial culture techniques. Additional culturing for coagulase-positive Staphylococcus and coliforms was performed using selective agar. While the vast majority of study participants (n = 461, 92%) believed that hand washing was important for infection prevention, there was a large amount of variation in reported personal hygiene practices. More women than men reported consistent hand washing before preparing food (p = .002) and after using the toilet (p = .001). Environmental hygiene showed similar variability although 73.3% (n = 367) of subjects reported dormitory cleaning at least once per month. Contamination of certain surfaces was common, with at least one third of all bookshelves, desks, refrigerator handles, toilet handles, and bathroom door handles positive for >10 CFU of bacteria per 4 cm(2) area. Coagulase-positive Staphylococcus was detected in three participants' rooms (5%) and coliforms were present in six students' rooms (10%). Surface contamination with any bacteria did not vary by frequency of cleaning or frequency of illness (p>.05). Our results suggest that surface contamination, while prevalent, is unrelated to reported hygiene or health in the university setting

  7. Personal and Household Hygiene, Environmental Contamination, and Health in Undergraduate Residence Halls in New York City, 2011

    Science.gov (United States)

    Haxall, Katharine; Conway, Laurie; Kelly, Nicole; Stare, Dianne; Tropiano, Christina; Gilman, Allan; Seward, Samuel L.; Larson, Elaine

    2013-01-01

    Background While several studies have documented the importance of hand washing in the university setting, the added role of environmental hygiene remains poorly understood. The purpose of this study was to characterize the personal and environmental hygiene habits of college students, define the determinants of hygiene in this population, and assess the relationship between reported hygiene behaviors, environmental contamination, and health status. Methods 501 undergraduate students completed a previously validated survey assessing baseline demographics, hygiene habits, determinants of hygiene, and health status. Sixty survey respondents had microbiological samples taken from eight standardized surfaces in their dormitory environment. Bacterial contamination was assessed using standard quantitative bacterial culture techniques. Additional culturing for coagulase-positive Staphylococcus and coliforms was performed using selective agar. Results While the vast majority of study participants (n = 461, 92%) believed that hand washing was important for infection prevention, there was a large amount of variation in reported personal hygiene practices. More women than men reported consistent hand washing before preparing food (p = .002) and after using the toilet (p = .001). Environmental hygiene showed similar variability although 73.3% (n = 367) of subjects reported dormitory cleaning at least once per month. Contamination of certain surfaces was common, with at least one third of all bookshelves, desks, refrigerator handles, toilet handles, and bathroom door handles positive for >10 CFU of bacteria per 4 cm2 area. Coagulase-positive Staphylococcus was detected in three participants' rooms (5%) and coliforms were present in six students' rooms (10%). Surface contamination with any bacteria did not vary by frequency of cleaning or frequency of illness (p>.05). Conclusions Our results suggest that surface contamination, while prevalent, is unrelated to

  8. A Business-Oriented Student Program: Residence Hall Stores.

    Science.gov (United States)

    Valerio, Vance R.

    1983-01-01

    Describes a residence hall store program which provides prepackaged food and snacks to students at Marquette University. Results of a survey of 21 colleges which have residence hall stores revealed primarily informal organizations. Stores can be a successful student development technique which teaches principles of small-business management. (JAC)

  9. The Marketing of Residence Halls: A Question of Positioning.

    Science.gov (United States)

    Parker, R. Stephen; And Others

    1996-01-01

    A survey of 343 college residence hall directors revealed percentages of private and public institutions offering different amenities, main selling points in promotional brochures, and the most common resident complaints. Results were compared with those of a resident survey concerning the importance of various housing attributes. Implications for…

  10. Involving Students in Residence Halls in Hong Kong

    Science.gov (United States)

    Ting, S. Raymond; Chan, Rebecca; Lee, Esther

    2016-01-01

    This article reports a study based on A. W. Astin's (1984) involvement theory applied in residence halls at a public university in Hong Kong, China. The resident students who were involved as participants or student leaders in this study were found to be better developed in terms of leadership, career development, multicultural experience,…

  11. Living and Learning: "Does Residence Hall Roommate Placement of Traditional Freshman Students at MSOE Effect Their Satisfaction with the Residence Halls?"

    Science.gov (United States)

    Breese, William Ellis, II

    2012-01-01

    The purpose of this study is to examine if residence hall roommate placement of traditional freshman students at MSOE affects their satisfaction with the residence halls. The idea behind this study is that if residence hall roommate placement is done purposefully, with the participation of incoming freshmen through appropriate placement…

  12. Investigating Black Gay Male Undergraduates' Experiences in Campus Residence Halls

    Science.gov (United States)

    Strayhorn, Terrell L.; Mullins, Taris G.

    2012-01-01

    This qualitative study sought to understand the challenges that Black gay male undergraduates confront in campus residence halls and the supports that enabled their success in facing them. Drawing on in-depth interviews with 29 participants, we found that Black gay men report varied encounters with subtle and overt forms of racism among White…

  13. Helping Students Achieve Their Goals: The Experience of Working with Students with Mental Health Concerns in a Residence Hall

    Science.gov (United States)

    Schafer, Kevin P.

    2016-01-01

    Individuals living with a mental health issue and attending college may experience significant opportunities for growth and also personal challenges in their development into young adulthood. Residence hall directors may be instrumental in assisting this population during their college years. The purpose of this qualitative study was to examine…

  14. The Role of Social Influence on How Residence Hall Inhabitants Respond to Fire Alarms

    Science.gov (United States)

    Leytem, Michael; Stark, Emily

    2016-01-01

    College resident halls pose a threat for a catastrophic event in the case of fire, but little research has examined potential influences on students' responses to fire alarms, particularly the role of social influence in affecting their behaviors. In the current study, residence hall inhabitants reported their knowledge about fire safety, their…

  15. "Are You as Hard as 50 Cent?" Negotiating Race and Masculinity in the Residence Halls

    Science.gov (United States)

    Jaggers, Dametraus; Iverson, Susan V.

    2012-01-01

    In a qualitative study of Black undergraduate men at a predominantly White university in the Midwest, participants shared their experiences in residence halls, including roommate conflicts, interracial tensions, and disagreements with residence hall staff. This article focuses on Black male undergraduates' negotiation of racialized conceptions of…

  16. "Are You as Hard as 50 Cent? Negotiating Race and Masculinity in the Residence Halls

    Science.gov (United States)

    Jaggers, Dametraus; Iverson, Susan V.

    2012-01-01

    In a qualitative study of Black undergraduate men at a predominantly White university in the Midwest, participants shared their experiences in residence halls, including roommate conflicts, interracial tensions, and disagreements with residence hall staff. This article focuses on Black male undergraduates' negotiation of racialized conceptions of…

  17. Alcohol Trajectories over Three Years in a Swedish Residence Hall Student Population

    Directory of Open Access Journals (Sweden)

    Henriettae Ståhlbrandt

    2010-03-01

    Full Text Available Although it is known that college students have a high alcohol consumption, less is known about the long-term drinking trajectories amongst college students and, in particular, students living in residence halls, known to be high-risk drinkers. Over four consecutive years, the drinking habits of 556 Swedish residence hall students were analyzed. The main instruments for measuring outcome were AUDIT (Alcohol Use Identification Disorders Test, SIP (Short Index of Problems and eBAC (estimated Blood Alcohol Concentration. The drinking trajectories among Swedish residence hall students showed stable and decreasing drinking patterns, with age and gender being predictors of group membership.

  18. Alcohol trajectories over three years in a Swedish residence hall student population.

    Science.gov (United States)

    Ståhlbrandt, Henriettae; Leifman, Anders; Johnsson, Kent O; Berglund, Mats

    2010-04-01

    Although it is known that college students have a high alcohol consumption, less is known about the long-term drinking trajectories amongst college students and, in particular, students living in residence halls, known to be high-risk drinkers. Over four consecutive years, the drinking habits of 556 Swedish residence hall students were analyzed. The main instruments for measuring outcome were AUDIT (Alcohol Use Identification Disorders Test), SIP (Short Index of Problems) and eBAC (estimated Blood Alcohol Concentration). The drinking trajectories among Swedish residence hall students showed stable and decreasing drinking patterns, with age and gender being predictors of group membership.

  19. Alcohol Trajectories over Three Years in a Swedish Residence Hall Student Population

    Science.gov (United States)

    Ståhlbrandt, Henriettae; Leifman, Anders; Johnsson, Kent O.; Berglund, Mats

    2010-01-01

    Although it is known that college students have a high alcohol consumption, less is known about the long-term drinking trajectories amongst college students and, in particular, students living in residence halls, known to be high-risk drinkers. Over four consecutive years, the drinking habits of 556 Swedish residence hall students were analyzed. The main instruments for measuring outcome were AUDIT (Alcohol Use Identification Disorders Test), SIP (Short Index of Problems) and eBAC (estimated Blood Alcohol Concentration). The drinking trajectories among Swedish residence hall students showed stable and decreasing drinking patterns, with age and gender being predictors of group membership. PMID:20617038

  20. Student Development in a Coed Residence Hall: Promiscuity, Prophylactic, or Panacea?

    Science.gov (United States)

    Brown, Robert D.; And Others

    1973-01-01

    The results of this study on evaluation of coed residence halls, indicate that a coed hall can lead to an entirely different environment, one that is a contributing factor in positive student development. This paper was presented at the APGA Convention, Chicago, Illinois, 1972. (JC)

  1. Reflections of a Professor on Nine Years of Living in the Dorms ... I Mean Residence Halls!

    Science.gov (United States)

    Rhoads, Robert A.

    2009-01-01

    Faculty-in-residence programs aim to strengthen the intellectual climate in residential facilities. This article presents the author's reflections on nine years of living in a residence hall as a Faculty-In-Residence (FIR) at the University of California, Los Angeles (UCLA). The author shares an insider's observations on the role he played as a…

  2. Style of Life and Student Personnel Policy in College Residence Halls

    Science.gov (United States)

    White, Julie E.

    1969-01-01

    Doctoral dissertation, Dimensions of Conformity and Evasion in Residence Halls for University Women: A Sociological Analysis of Normative Behavior in a Large-Scale Social Organization, 1962, University of Illinois, Urbana.

  3. A Policy Analysis of Missouri Community College Residence Hall Discipline Policies with an Analysis of Changes in the State Fair Community College Residence Hall Policy

    Science.gov (United States)

    Gilgour, Joseph G.

    2012-01-01

    Community colleges in the United States have long been known as institutions of equal opportunity and affordable education. One facet of student life appearing at more and more community colleges is the addition of residence halls. Still, the number of community colleges with on-campus living is relatively small, and for the campuses with…

  4. What Residence Hall Staff Need to Know about Dealing with Death.

    Science.gov (United States)

    Jacobs, Bonita; Towns, James E.

    1984-01-01

    Emphasizes the responsibility for residence hall staff to understand the grief process. An adaptation of Kubler-Ross's stages of death has produced helpful techniques for successfully accepting the death. Through understanding these principles, staff can become aware of the grief process and can assist residents. (JAC)

  5. Examining the Impact Parental Educational Attainment Has on Students' Perceptions of Residence Hall Living

    Science.gov (United States)

    Lawrie, Joshua D.

    2012-01-01

    The current study sought to examine the impact parental educational attainment had on how students perceived their residence hall environment. This multi-campus study utilized the University Residence Environment Scale, along with a demographic form to gather data. The study occurred on three campuses during the Spring 2012 semester and had 347…

  6. The Actively Caring for People Movement at Virginia Tech and Beyond: Cultivating Compassion and Relationships in Residence Halls

    Science.gov (United States)

    McCarty, Shane M.; Mullins, Taris G.; Geller, E. Scott; Shushok, Frank, Jr.

    2013-01-01

    A professor and a group of student leaders initiated the Actively Caring for People (AC4P) Movement to establish a more civil, compassionate, and inclusive culture by inspiring intentional acts of kindness. This article explores the AC4P Movement in a first-year residence hall at Virginia Tech and a second-year residence hall at University of…

  7. Students' Sense of Community in Residence Halls, Social Integration, and First-Year Persistence.

    Science.gov (United States)

    Berger, Joseph B.

    1997-01-01

    Used concepts from community psychology literature to elaborate a revised version of Tinto's model of individual student departure. Employed a longitudinal analysis of 718 college students. Results indicate that students' sense of community in their residence halls was a source of social integration and a precursor to student departure decisions.…

  8. Students' Perceptions of the Residence Hall Living Environment at Kuwait University

    Science.gov (United States)

    Al Kandari, Nabila

    2007-01-01

    The purpose of this study is to explore students' perceptions of the residence hall living environment at Kuwait University. The researcher developed a questionnaire for this purpose that included 36 items. The sample of the study consisted of 191 residential students, of whom 98 were male and 93 were female. The research findings indicated that:…

  9. Students' Sense of Community Based on Experiences with Residence Hall Design

    Science.gov (United States)

    Heasley, Christopher L.

    2013-01-01

    This study seeks to determine students' sense of community outcomes based on experiences with different residence hall architectural designs. Sense of community is a "feeling that members have of belonging, a feeling that members matter to one another and to the group, and a shared faith that members' needs will be met through their…

  10. Residence Hall Room Type and Alcohol Use among College Students Living on Campus

    Science.gov (United States)

    Cross, Jennifer E.; Zimmerman, Don; O'Grady, Megan A.

    2009-01-01

    The objectives were to explore the relation between the built environment of residence halls and the alcohol use of college students living on campus from the perspective of the theory of routine activity. This exploratory study examined data from two samples on one college campus. Online surveys assessed alcohol use, attitudes toward alcohol use,…

  11. Residence Hall Student Satisfaction with Interim Alcohol Policy. Office for Student Affairs Research Bulletin; v15 n4 Jul74.

    Science.gov (United States)

    Seabourg, Deborah; And Others

    At the beginning of the 1973-74 academic year alcohol usage was officially permitted for the first time in residence halls at the Twin Cities Campus of the University of Minnesota. To determine residents' perceptions of the effects of the change in drinking policy, interviews were conducted with 49 current dormitory residents, who had also lived…

  12. Fostering a Sense of Community in Residence Halls: A Role for Housing and Residential Professionals in Increasing College Student Persistence

    Science.gov (United States)

    Erb, Natalee M.; Sinclair, Matthew S.; Braxton, John M.

    2015-01-01

    Fostering a sense of community should be at the center of every housing and residence life professional's efforts. Research conducted by Braxton et al. (2014) revealed that students who are able to identify with their residence hall community, interact with peers in this community, and find solidarity within the community experience an increased…

  13. 26 CFR 25.2702-5 - Personal residence trusts.

    Science.gov (United States)

    2010-04-01

    ... a portion of the residence is used in an activity meeting the requirements of section 280A(c) (1) or... provision of lodging (e.g. a hotel or a bed and breakfast). A residence is not a personal residence if... portion of their interests in the residence) to the same personal residence trust, provided that the...

  14. [Food behavior in student residence halls: a setting for health promotion].

    Science.gov (United States)

    Alves, Hayda Josiane; Boog, Maria Cristina Faber

    2007-04-01

    To qualitatively describe food practices of students living in a residence hall. A quantitative and qualitative study was carried out in a drawn sample of 100 university students living in a residence hall in the city of Campinas, Southeastern Brazil, in 2004. Students were interviewed using a questionnaire to collect 24-hour food recall information including open questions on shopping and intake practices. Criteria were established for the analysis of meal quality. The Chi-square and the exact Fisher test were used at a 5% significance level. Representations based on Moscivici's theory of social representations were obtained in the interviews and analyzed. Assessment of 24-hour food recall: breakfast--30% of the students skipped it, 13% had full, 37% had standard and 20% had partial meal; lunch--5% skipped, 72% had full, and 23% had partial meal; dinner--1% skipped, 36% had full, and 63% had partial meal. Lunch was the best quality meal and of those who had lunch, 63% had it at the university cafeteria. Of all respondents, 48% had no fruit and 39% had no milk. Most (69%) showed an individual food behavior and 43% thought that having meals together had a positive impact on their food behavior. The experience of becoming the provider of their own food changes the students' food behaviors and representations. Diet quality, patterns of commensality and social representations of food provide input for developing healthy diet care and health promotion.

  15. 19 CFR 148.2 - Residence status of arriving persons.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Residence status of arriving persons. 148.2... Residence status of arriving persons. (a) General. Persons arriving from foreign countries shall be divided... established a home elsewhere. For this purpose, the residence of a wife shall be deemed to be that of her...

  16. An exploratory cluster randomised trial of a university halls of residence based social norms marketing campaign to reduce alcohol consumption among 1st year students.

    Science.gov (United States)

    Moore, Graham F; Williams, Annie; Moore, Laurence; Murphy, Simon

    2013-04-18

    This exploratory trial examines the feasibility of implementing a social norms marketing campaign to reduce student drinking in universities in Wales, and evaluating it using cluster randomised trial methodology. Fifty residence halls in 4 universities in Wales were randomly assigned to intervention or control arms. Web and paper surveys were distributed to students within these halls (n = 3800), assessing exposure/contamination, recall of and evaluative responses to intervention messages, perceived drinking norms and personal drinking behaviour. Measures included the Drinking Norms Rating Form, the Daily Drinking Questionnaire and AUDIT-C. A response rate of 15% (n = 554) was achieved, varying substantially between sites. Intervention posters were seen by 80% and 43% of students in intervention and control halls respectively, with most remaining materials seen by a minority in both groups. Intervention messages were rated as credible and relevant by little more than half of students, though fewer felt they would influence their behaviour, with lighter drinkers more likely to perceive messages as credible. No differences in perceived norms were observed between intervention and control groups. Students reporting having seen intervention materials reported lower descriptive and injunctive norms than those who did not. Attention is needed to enhancing exposure, credibility and perceived relevance of intervention messages, particularly among heavier drinkers, before definitive evaluation can be recommended. A definitive evaluation would need to consider how it would achieve sufficient response rates, whilst hall-level cluster randomisation appears subject to a significant degree of contamination. ISRCTN: ISRCTN48556384.

  17. Being and Belonging: A Critical Phenomenological Study of Undergraduate Chinese International Students' Sense of Belonging in Residence Halls

    Science.gov (United States)

    Yao, Christina Wai-Tze

    2014-01-01

    Despite the large number of international students from China in U.S. higher education, little research exists on these students' perceptions of the racial climate in residence halls. This research study illuminates the experiences affecting the sense of belonging of first-year Chinese international students and provides insights on how these…

  18. Beyond Hall: Variables in the Use of Personal Space in Intercultural Transactions.

    Science.gov (United States)

    Dolphin, Carol Zinner

    Edward Hall's long accepted theories of proxemics, developed in the mid-sixties of this century, promoted the idea that culture plays the definitive role in determining how different individuals use personal space. Contact cultures, inhabited by people who are comfortable with touching and close contact, include those of Arabia, Latin America, and…

  19. Personal Therapy in Psychiatry Residency Training: A National Survey of Canadian Psychiatry Residents.

    Science.gov (United States)

    Hadjipavlou, George; Halli, Priyanka; Hernandez, Carlos A Sierra; Ogrodniczuk, John S

    2016-02-01

    The authors collected nationally representative data on Canadian residents' experiences with and perspectives on personal psychotherapy in their psychiatric training. A 43-item questionnaire was distributed electronically to all current psychiatry residents in Canada (N = 839). Four hundred residents from every program across Canada returned the survey (response rate 47.7%). The prevalence of personal therapy at any time was 55.3%, with 42.8% receiving personal therapy during residency. Of residents who undertook personal psychotherapy, 59.3% engaged in weekly therapy, 74.1% received psychodynamic psychotherapy, and 81.5% participated in long-term therapy (>1 year). Personal growth, self-understanding, and professional development were the most common reasons for engaging in personal therapy; however, one-third of residents did so to alleviate symptoms of depression, anxiety, or other mental health concerns. Time was the most important factor impeding residents from personal therapy; only 8.8% found stigma to act as a barrier. The vast majority of residents rated their experience with personal therapy as having a positive or very positive impact on their personal life (84.8%) and overall development as psychiatrists (81.8%). For 64% of respondents, personal therapy had an important or very important role in psychiatry residency training. Residents who received personal therapy rated themselves as better able to understand what happens moment by moment during therapy sessions, detect and deal with patients' emotional reactions, and constructively use their personal reactions to patients. Interest in personal therapy remains strong among psychiatry trainees in Canada. Residents who engaged in psychotherapy endorsed greater confidence in psychotherapy and rated their psychotherapy skills more favorably than those who had never been in the patient role, supporting the view of personal therapy as an important adjunct to psychotherapy training during residency.

  20. Sleep quality and some factors affecting sleep quality in the students living in the residence hall of a university

    OpenAIRE

    Ozge Yavuz Sari; Sarp Uner; Berkem Buyukakkus; Emine Ozlem Bostanci; Aytek Huseyin Celiksoz; Mehmet Budak

    2015-01-01

    AIM: Sleep disorders are remarkable public health problems as they adversely affect physical, mental and social health and may cause accidents and decline in academic performance and labor productivity. Aim of the study is assessing sleep quality and determining some factors affecting sleep quality in the students living in the residence hall of a university. METHOD: It is a cross sectional study conducted with 277 students, 180 of whom are female. Data were collected via a questionnaire ...

  1. Changes in Personal Relationships During Residency and Their Effects on Resident Wellness: A Qualitative Study.

    Science.gov (United States)

    Law, Marcus; Lam, Michelle; Wu, Diana; Veinot, Paula; Mylopoulos, Maria

    2017-11-01

    Residency poses challenges for residents' personal relationships. Research suggests residents rely on family and friends for support during their training. The authors explored the impact of residency demands on residents' personal relationships and the effects changes in those relationships could have on their wellness. The authors used a constructivist grounded theory approach. In 2012-2014, they conducted semistructured interviews with a purposive and theoretical sample of 16 Canadian residents from various specialties and training levels. Data analysis occurred concurrently with data collection, allowing authors to use a constant comparative approach to explore emergent themes. Transcripts were coded; codes were organized into categories and then themes to develop a substantive theory. Residents perceived their relationships to be influenced by their evolving professional identity: Although personal relationships were important, being a doctor superseded them. Participants suggested they were forced to adapt their personal relationships, which resulted in the evolution of a hierarchy of relationships that was reinforced by the work-life imbalance imposed by their training. This poor work-life balance seemed to result in relationship issues and diminish residents' wellness. Participants applied coping mechanisms to manage the conflict arising from the adaptation and protect their relationships. To minimize the effects of identity dissonance, some gravitated toward relationships with others who shared their professional identity or sought social comparison as affirmation. Erosion of personal relationships could affect resident wellness and lead to burnout. Educators must consider how educational programs impact relationships and the subsequent effects on resident wellness.

  2. Anesthesiology resident personality type correlates with faculty assessment of resident performance.

    Science.gov (United States)

    Schell, Randall M; Dilorenzo, Amy N; Li, Hsin-Fang; Fragneto, Regina Y; Bowe, Edwin A; Hessel, Eugene A

    2012-11-01

    To study the association between anesthesiology residents' personality preference types, faculty evaluations of residents' performance, and knowledge. Convenience sample and prospective study. Academic department of anesthesiology. Consenting anesthesiology residents (n = 36). All participants completed the Myers Briggs Type Indicator® (MBTI®). All residents' 6-month summation of daily focal evaluations completed by faculty [daily performance score (DPS); 1 = unsatisfactory, 2 = needs improvement, 3 = meets expectations, 4 = exceeds expectations], as well as a global assessment of performance (GAP) score based on placement of each resident into perceived quartile compared with their peers (ie,1 = first, or top, quartile) by senior faculty (n = 7) who also completed the MBTI, were obtained. The resident MBTI personality preferences were compared with the DPS and GAP scores, the United States Medical Licensing Examination (USMLE) I and II scores, and faculty MBTI personality type. There was no association between personality preference type and performance on standardized examinations (USMLE I, II). The mean GAP score was better (higher quartile score) for Extraverts than Introverts (median 2.0 vs 2.6, P = 0.0047) and for Sensing versus Intuition (median 2.0 vs 2.6, P = 0.0206) preference. Faculty evaluator MBTI preference type did not influence the GAP scores they assigned residents. Like GAP, the DPS was better for residents with Sensing versus Intuition preference (median 3.5 vs 3.3, P = 0.0111). No difference in DPS was noted between Extraverts and Introverts. Personality preference type was not associated with resident performance on standardized examinations, but it was associated with faculty evaluations of resident performance. Residents with Sensing personality preference were evaluated more favorably on global and focal faculty evaluations than those residents who chose the Intuition preference. Extraverted residents were evaluated more favorably on

  3. Personality Testing May Improve Resident Selection in Anesthesiology Programs

    Science.gov (United States)

    Merlo, Lisa J.; Matveevskii, Alexander S.

    2010-01-01

    Background Current methods of selecting future residents for anesthesiology training programs do not adequately distinguish those who will succeed from the pool of seemingly well-qualified applicants. Some residents, despite high exam scores, may struggle in the OR in stressful situations. Aims This study examined whether specific neuropsychological and personality measures can distinguish high competency residents from low competency residents to aid in resident selection. Methods 25 residents enrolled in an anesthesiology program at a major academic institution were identified for participation. 13 were evaluated identified as “high competency” residents and 12 as “low competency ” by the department's clinical competency committee. Groups were evaluated on measures of fine motor dexterity, executive functioning, processing speed, attention, and personality using IPIP-NEO. Results There were no significant differences between groups on measures of fine-motor dexterity, executive functioning, processing speed, or attention. High competency residents scored significantly higher than low competency residents on measures of cooperation, self-efficacy, and adventurousness, and lower on measures of neuroticism, anxiety, anger, and vulnerability. Conclusion Although measures of fine-motor dexterity, executive functioning, processing speed, and attention do not appear to distinguish between high- and low competency residents in anesthesiology, specific personality characteristics may be associated with future success in an anesthesiology training program. PMID:19995155

  4. Using the Leaderless Group Discussion Technique for the Selection of Residence Hall Counselors

    Science.gov (United States)

    Banta, Trudy W.; McCormick, Jane E.

    1969-01-01

    Describes successful effort to involve head residents in selection responsibilities. Discusses use of Record of Previous Leadership Experience, behavior ratings adapted from Interview and LGD Rating Scale (T. W. Banta) recommendation from head resident as selection criteria. (CJ)

  5. Plagiarism in Personal Statements of Anesthesiology Residency Applicants.

    Science.gov (United States)

    Parks, Lance J; Sizemore, Daniel C; Johnstone, Robert E

    2016-02-15

    Plagiarism by residency applicants in their personal statements, as well as sites that sell personal statements, have been described, and led in 2011 to advice to avoid plagiarism and the caution that plagiarism detection software was available. We screened personal statements of 467 anesthesiology residency applicants from 2013-2014 using Viper Plagiarism Scanner software, and studied them for plagiarism. After quotes and commonly used phrases were removed, 82 statements contained unoriginal content of 8 or more consecutive words. After the study, 13.6% of personal statements from non-United States medical school graduates, and 4.0% from United States medical school graduates, contained plagiarized material, a significant difference. Plagiarized content ranged up to 58%. Plagiarism continues to occur in anesthesiology residency personal statements, with a higher incidence among graduates of non-United States medical schools.

  6. Personal characteristics of residents may predict competency improvement.

    Science.gov (United States)

    Park, EunMi; Ha, Patrick K; Eisele, David W; Francis, Howard W; Kim, Young J

    2016-08-01

    We hypothesized that personal characteristics of residents may affect how well competency is attained in a surgical residency. To this end, we examined two concepts of global trait emotional intelligence and learner autonomy profile and their factor relationship with competency outcomes in a residency program in otolaryngology-head and neck surgery. A cohort study prospectively gathered competency change scores for 1 year and retrospectively analyzed the factor associations. We measured two personal characteristics using the Trait Emotional Intelligence Questionnaire-Short Form and Learner Autonomy Profile-Short Form between 2013 and 2014 in a tertiary otolaryngology-head and neck residency program. We prospectively examined faculty-rated resident competency scores monitored in the same time period and correlated the personal attributes with cumulative competency improvement scores. Statistical analyses included factor correlations and univariate regression. With a response rate of 64% (N = 16/25), we identified two statically significant predictors of competency improvement outcome attained by the end of the year. Regression analyses showed that emotionality factor of global trait emotional intelligence (P = .04) and learner autonomy profile (P < .01) were significant predictors for the higher improvement of aggregate competency outcome. Personal factors of individual residents can affect their improvement of overall competency. Practicing competency-based education should, therefore, include assessing individual resident factors as well as teaching clinical knowledge and technical skills. NA Laryngoscope, 126:1746-1752, 2016. © 2015 The American Laryngological, Rhinological and Otological Society, Inc.

  7. Hall v. Florida: Capital Punishment, IQ, and Persons With Intellectual Disabilities.

    Science.gov (United States)

    Cooke, Brian K; Delalot, Dominque; Werner, Tonia L

    2015-06-01

    The United States Supreme Court has ruled on the question of persons with intellectual disability and capital punishment in several notable cases, including Penry v. Lynaugh (1989) and Atkins v. Virginia (2002). In 2014, the U.S. Supreme Court revisited the subject in Hall v. Florida. Although Florida Statute § 921.137 prohibits imposing a sentence of death on a defendant convicted of a capital felony if it is determined that the defendant is intellectually disabled, the Florida Supreme Court strictly interpreted the law so that, because Mr. Hall's IQ was not below the cutoff of 70, further evidence could not be presented to show that he had an intellectual disability. In Hall v. Florida, the Court analyzed the relevance of the standard error of measurement of IQ testing, whether there is a consensus among the states regarding capital punishment, and whether there is a consensus among professional associations regarding these questions. The Court also adopted the term "intellectual disability" as opposed to "mental retardation," following changes in both the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, and the U.S. Code and Code of Federal Regulations. We examine the Court's decision and offer commentary regarding the overall effect of this landmark case. © 2015 American Academy of Psychiatry and the Law.

  8. Sleep quality and some factors affecting sleep quality in the students living in the residence hall of a university

    Directory of Open Access Journals (Sweden)

    Ozge Yavuz Sari

    2015-04-01

    Full Text Available AIM: Sleep disorders are remarkable public health problems as they adversely affect physical, mental and social health and may cause accidents and decline in academic performance and labor productivity. Aim of the study is assessing sleep quality and determining some factors affecting sleep quality in the students living in the residence hall of a university. METHOD: It is a cross sectional study conducted with 277 students, 180 of whom are female. Data were collected via a questionnaire including Pittsburgh Sleep Quality Index (PSQI, Epworth Sleepiness Scale (ESS and socio-demographic characteristics query. RESULTS: According to PSQI, 41.1% of students have bad sleep quality. Sleep quality of male students and students who are overweight/obese or living in more crowded rooms in the hall of residence is worse than other students and #8217;. Prevalence of bad sleep quality is higher in medication users, participants thinking that they have problems in sleeping or falling asleep and had stressful experience in the last month. The differences between groups were statistically significant. In logistic regression analyzes, using medication (OR=2.54, having problems in sleep (OR=12.75, having problems in falling asleep (OR=8.83 and bad experiences in the last month (OR=2.66 have effects on sleep quality. CONCLUSIONS: Interventions about sleep disorders are important due to their preventable characteristics. Developing healthy life habits, improving physical conditions and coping with stress will be effective on preventing and treating sleep disorders. [TAF Prev Med Bull 2015; 14(2.000: 93-100

  9. Resident and Non resident Persons in Theory and Practice Tax – Case of Kosovo

    Directory of Open Access Journals (Sweden)

    Fitore Morina

    2016-08-01

    Full Text Available In each country there is the attempt to impose their jurisdiction persons who derive income and require sufficient connection between the state and these persons to enable the collection of these revenues on behalf of taxes. However, it should be asked which connection is required between the state and subjects of law to achieve this goal. There is a number of factors stemming from the subjects of law that can create report - link between the state and subjects of law, such as: citizenship, residence, nationality, presence in the state concerned, etc. Tax systems in the country (domestic tax systems will determine which subject will be considered for the purposes of the tax legislation of the respective state tax subject to domestic (resident and which foreign (non- resident. In this context, local tax legislation must modulate two basic issues: The first, are the characteristics of natural and legal persons who are established, organized and operate within the boundaries of the respective state (resident and the Second, the characteristics of natural and legal persons who are established and organized under the laws of foreign (non- resident.

  10. Moradia universitária: processos de socialização e consumo de drogas University residence halls: socialization processes and drug consumption

    Directory of Open Access Journals (Sweden)

    Thais Helena Mourão Laranjo

    2006-12-01

    Full Text Available OBJETIVO: Conhecer e analisar o discurso dos moradores de um conjunto residencial estudantil universitário sobre os processos de socialização e consumo de drogas. MÉTODOS: Pesquisa qualitativa, realizada com 20 alunos de graduação residentes em moradia estudantil universitária em São Paulo, SP, 2003. Tomou-se a moradia como um espaço de socialização juvenil que viabiliza a presença de estudantes de baixa renda, na universidade. As entrevistas abordaram o conhecimento dos alunos sobre a história da moradia, a experiência de viver em uma moradia estudantil e a percepção dos moradores sobre o consumo de drogas. O procedimento metodológico que serviu de base para a coleta, organização e análise das entrevistas foi o discurso do sujeito coletivo. RESULTADOS: Os resultados mostraram que: os estudantes têm pouco conhecimento sobre a história da moradia; as alternativas para os problemas que enfrentam na moradia têm sido buscadas individualmente; observou-se entre os moradores as duas principais concepções de prevenção ao consumo de drogas - guerra às drogas e redução de danos. Observou-se haver uma visão negativa sobre a moradia estudantil relacionada com a constante divulgação de fatos conturbados e com o desconhecimento sobre a importância da moradia para viabilizar a permanência de estudantes pobres na universidade. CONCLUSÕES: Na opinião de seus moradores, a moradia estudantil viabiliza o acesso a universidade, apesar de dificuldades na convivência coletiva e na administração da universidade. Em relação ao uso de drogas na moradia, parte dos moradores ressalta a necessidade de menor tolerância ao consumo de drogas e outra parte destaca a importância de trabalho educativo, principalmente com os ingressantes.OBJECTIVE: To investigate and analyze the discourse of students living in university residence halls regarding socialization processes and drug consumption. METHODS: This was qualitative research among

  11. Two-Year Outcome of Alcohol Interventions in Swedish University Halls of Residence: A Cluster Randomized Trial of a Brief Skills Training Program, Twelve-Step-Influenced Intervention, and Controls.

    OpenAIRE

    Ståhlbrandt, Henrietta; Johnsson, Kent; Berglund, Mats

    2007-01-01

    Background: High-risk alcohol consumption among university students is well documented. Several types of intervention have proved to be effective in reducing alcohol consumption. This study examines the 2-year outcome of 2 different alcohol intervention programs at university halls of residence. Methods: Ninety-eight university halls of residence (with 556 students) were cluster randomized to 2 different intervention groups: a brief skills training program (BSTP) with interactive lectu...

  12. The Surgical Personality: Does Surgery Resident Motivation Predict Attrition?

    Science.gov (United States)

    Symer, Matthew M; Abelson, Jonathan S; Yeo, Heather L; Sosa, Julie A; Rosenthal, M Zachary

    2018-03-03

    There is limited understanding of the wide variation in attrition rates among general surgery residencies. We used the validated BIS/BAS (Behavior Inhibitory System/Behavior Approach System) instrument to compare motivational traits among residents who did/not complete surgical training. All US general surgery categorical interns in the class of 2007-2008 were surveyed with a validated motivational trait assessment tool. American Board of Surgery records from 2008-2016 were used to determine who completed training. Motivation, an aspect of personality, was assessed with the BIS/BAS, which correlates with an individual's tendency to approach pleasant stimuli (BAS) or avoid negative stimuli (BIS). Subscale average scores were compared with regard to the primary outcome, attrition. 801 (76.5%) interns completed the survey and had matching records. 645 (80.5%) completed training. Men had lower scores than women in the BAS Drive subscale (12.0 vs 12.5, pmotivational personality traits. Copyright © 2018. Published by Elsevier Inc.

  13. Use of dialectical behavior therapy in borderline personality disorder: a view from residency.

    Science.gov (United States)

    Sharma, Binali; Dunlop, Boadie W; Ninan, Philip T; Bradley, Rebekah

    2007-01-01

    The authors describe the use of dialectical behavior therapy (DBT) in treating borderline personality disorder during psychiatry residency, and assess the status of DBT education within psychiatry residencies in the United States. The authors present a patient with borderline personality disorder treated by a resident using DBT, along with perspectives from the resident's supervisors. Additionally, self-report surveys inquiring about the attitudes and experiences of residency directors and PGY-4 residents regarding DBT were sent to program directors with available e-mail addresses on FREIDA online. The DBT method employed by the resident had to be modified to fit the constraints of a residency program. The patient in therapy had a tumultuous course, ultimately resulting in the discontinuation of treatment. Survey results suggested an underemphasis on the education and use of DBT during residency, though the strength of this conclusion is limited by the small proportion of surveys returned. Achieving the efficacy of DBT-based treatment of borderline personality disorder reported in the literature in the setting of a residency program is challenging. Greater exposure to DBT during residency may increase residents' skills in using the technique and the likelihood that they will use it after residency.

  14. Frail aged persons residing in South African homes for the aged ...

    African Journals Online (AJOL)

    The numbers and characteristics of white residents identified by medical and nursing staff as requiring more staff time and/or expertise and/or medical equipment than is available in homes for the aged were assessed. Only 27 out of 2447 (1 1%) extremely infirm aged persons resident in 93 homes for the aged would, in the ...

  15. Personality types of family practice residents as measured by the Myers-Briggs type indicator.

    Science.gov (United States)

    Harris, D L; Ebbert, P

    1985-01-01

    This study was initiated to test the hypothesis that individuals currently choosing family practice as a career are likely to have different personality types than those who previously pursued general practice. Incoming residents to the University of Utah Family Practice Residency Program were compared to a group of private primary care physicians serving rural areas. Personality types were determined by administering the Myers-Briggs Type Indicator to both groups. Results showed that the current resident group differed significantly from the primary care physician group and that the residents' personality types were similar to personality types of faculty in other studies. This raises the concern that many family practice residents may not choose to practice in underserved areas. Further studies need to follow personality types through medical school and residency training and into practice to help determine which prospective physicians are likely to choose a primary care career and a rural practice. This information may be useful in health manpower planning and in examining admissions policies of medical schools and residencies.

  16. Is ecological personality always consistent with low-carbon behavioral intention of urban residents?

    International Nuclear Information System (INIS)

    Wei, Jia; Chen, Hong; Long, Ruyin

    2016-01-01

    In the field of low-carbon economics, researchers have become interested in residential consumption as a potential means for reducing carbon emissions. By analyzing and expanding the fundamental concept of personality, a type of personality, namely ecological personality (EP), was defined and a structural model of EP was constructed based on a five-factor model. The study surveyed 890 urban residents to examine the relationship between EP and low-carbon behavioral intention (LCBI). Ecological personality is a five-dimensional concept comprising eco-neuroticism, eco-agreeableness, eco-openness, eco-extraversion, and eco-conscientiousness. Ecological personality traits were positively correlated with the LCBI. However, a quadrifid graph model showed that the EP is not always consistent with LCBI, and respondents fell into two groups: one group comprised ecological residents with consistent traits (positive EP and high LCBI) and non-ecological residents with consistent traits (negative EP and low LCBI), and their EP was consistent with LCBI; the other group comprised ecological residents with gap traits (positive EP and low LCBI) and non-ecological residents with gap traits (negative EP and high LCBI), and neither showed any consistency between personality and intentions. A policy to guide the conversion of different groups into ecological residents with consistent traits is discussed. - Highlights: • The structural model of ecological personality was constructed. • The relationship between personality and behavioral intention was examined. • Ecological personality and low-carbon behavioral intention donot always match up. • A policy urging residents to be ecological was discussed.

  17. Correlates of attitudes toward personal aging in older assisted living residents.

    Science.gov (United States)

    Park, Nan Sook; Jang, Yuri; Lee, Beom S; Chiriboga, David A; Molinari, Victor

    2015-01-01

    This study explored factors contributing to older adults' self-perceptions about their own aging in assisted living (AL) communities. Data analysis was completed based on interviews with 150 older residents from 17 AL communities. Multiple regression analyses found that functional disability and hearing impairment negatively affected attitudes toward personal aging among AL residents, and satisfaction with social support positively influenced attitudes. Health perception mediated attitudes toward personal aging. Findings suggest the importance of social workers helping older AL residents recognize social support as a means of promoting their positive self-regard.

  18. Changes in the personal dignity of nursing home residents: a longitudinal qualitative interview study.

    Directory of Open Access Journals (Sweden)

    Mariska G Oosterveld-Vlug

    Full Text Available BACKGROUND: Most nursing home residents spend the remainder of their life, until death, within a nursing home. As preserving dignity is an important aim of the care given here, insight into the way residents experience their dignity throughout their entire admission period is valuable. AIM: To investigate if and how nursing home residents' personal dignity changes over the course of time, and what contributes to this. DESIGN: A longitudinal qualitative study. METHODS: Multiple in-depth interviews, with an interval of six months, were carried out with 22 purposively sampled nursing home residents of the general medical wards of four nursing homes in The Netherlands. Transcripts were analyzed following the principles of thematic analysis. RESULTS: From admission onwards, some residents experienced an improved sense of dignity, while others experienced a downward trend, a fluctuating one or no change at all. Two mechanisms were especially important for a nursing home resident to maintain or regain personal dignity: the feeling that one is in control of his life and the feeling that one is regarded as a worthwhile person. The acquirement of both feelings could be supported by 1 finding a way to cope with one's situation; 2 getting acquainted with the new living structures in the nursing home and therefore feeling more at ease; 3 physical improvement (with or without an electric wheelchair; 4 being socially involved with nursing home staff, other residents and relatives; and 5 being amongst disabled others and therefore less prone to exposures of disrespect from the outer world. CONCLUSION: Although the direction in which a resident's personal dignity develops is also dependent on one's character and coping capacities, nursing home staff can contribute to dignity by creating optimal conditions to help a nursing home resident recover feelings of control and of being regarded as a worthwhile person.

  19. Hall Sweet Home

    Science.gov (United States)

    Oguntoyinbo, Lekan

    2011-01-01

    Many urban and commuter universities have their sights set on students who are unlikely to connect with the college and likely to fail unless the right strategies are put in place to help them graduate. In efforts to improve retention rates, commuter colleges are looking to an unusual suspect: residence halls. The author discusses how these…

  20. Changes in the Personal Dignity of Nursing Home Residents: A Longitudinal Qualitative Interview Study

    Science.gov (United States)

    Oosterveld-Vlug, Mariska G.; Pasman, H. Roeline W.; van Gennip, Isis E.; Willems, Dick L.; Onwuteaka-Philipsen, Bregje D.

    2013-01-01

    Background Most nursing home residents spend the remainder of their life, until death, within a nursing home. As preserving dignity is an important aim of the care given here, insight into the way residents experience their dignity throughout their entire admission period is valuable. Aim To investigate if and how nursing home residents’ personal dignity changes over the course of time, and what contributes to this. Design A longitudinal qualitative study. Methods Multiple in-depth interviews, with an interval of six months, were carried out with 22 purposively sampled nursing home residents of the general medical wards of four nursing homes in The Netherlands. Transcripts were analyzed following the principles of thematic analysis. Results From admission onwards, some residents experienced an improved sense of dignity, while others experienced a downward trend, a fluctuating one or no change at all. Two mechanisms were especially important for a nursing home resident to maintain or regain personal dignity: the feeling that one is in control of his life and the feeling that one is regarded as a worthwhile person. The acquirement of both feelings could be supported by 1) finding a way to cope with one’s situation; 2) getting acquainted with the new living structures in the nursing home and therefore feeling more at ease; 3) physical improvement (with or without an electric wheelchair); 4) being socially involved with nursing home staff, other residents and relatives; and 5) being amongst disabled others and therefore less prone to exposures of disrespect from the outer world. Conclusion Although the direction in which a resident’s personal dignity develops is also dependent on one’s character and coping capacities, nursing home staff can contribute to dignity by creating optimal conditions to help a nursing home resident recover feelings of control and of being regarded as a worthwhile person. PMID:24069235

  1. Personality types of otolaryngology resident applicants as described by the Myers-Briggs Type Indicator.

    Science.gov (United States)

    Zardouz, Shawn; German, Michael A; Wu, Edward C; Djalilian, Hamid R

    2011-05-01

    To assess the personality types of applicants to a single otolaryngology residency program using the Myers- Briggs Type Indicator. The personality types were compared with those of the general population and with physicians in other medical specialties. Cross-sectional survey. University hospital. A personality survey was emailed to 327 resident physician applicants over 2 consecutive years (2008- 2009). Analysis was accomplished by calculating prevalence estimates. Of the 327 anonymous surveys, 137 were completed (response rate = 42%). The Introverted/Sensing/Thinking/ Judging personality type was the most prevalent (14.6%), representing 13% of the general population. Prospective applicants displayed mostly Extroverted (E; 58%), Sensing (S; 54%), Thinking (T; 62%), and Judging (J; 61%) personality traits. Of the 16 personality types, statistically significant differences were found between otolaryngology resident applicants and the general population only for the Extroverted/Sensing/Thinking/ Perceiving (P = .002) personality type after correcting for multiple comparisons. The Intuitive (N; 46%) and Feeling (F; 38%) types correlated closely with the reported personality types of those individuals in non–primary care specialties, 47% and 28%, respectively. Extroverted (E) and Thinking (T) individuals appeared to prefer surgical specialties, which occurred in 58% and 62% of the applicants, respectively. There were no significant differences between male and female applicants. This study examines the personality types of medical students applying to an otolaryngology residency. The results support a highly structured, data-driven teaching preference among applicants. These results may allow for a better understanding of the personalities of medical students who are interested in otolaryngology.

  2. FISCAL SETTLEMENTS OF INCOMES OBTAINED FROM ABROAD BY NATURAL PERSONS RESIDENT IN ROMANIA

    Directory of Open Access Journals (Sweden)

    Buziernescu Radu

    2010-12-01

    Full Text Available The resident natural persons and those who qualify for residency conditions are subject to taxation in Romania for the incomes from any source, both from Romania and from abroad. External fiscal credit can be granted in order to avoid double taxation, so that the person can be entitled to deduct from the tax on income due in Romania the tax of income paid abroad, without exceeding the share of the income tax payable in Romania related to the income from abroad. The procedure of granting external fiscal credit vary depending on different categories of income.

  3. Person-Centered Dementia Care and Sleep in Assisted Living Residents With Dementia: A Pilot Study.

    Science.gov (United States)

    Li, Junxin; Grandner, Michael A; Chang, Yu-Ping; Jungquist, Carla; Porock, Davina

    2017-01-01

    The sleep of people with dementia living in long-term care is known to be disturbed. This pre-post controlled pilot study examined the effects of a person-centered dementia care intervention on sleep in assisted living residents with dementia. The three-month intervention included in-class staff training plus supervision and support in practice. The sleep-wake patterns were measured using actigraphy for three consecutive days at baseline and postintervention. Sixteen residents from the intervention and six from the control groups completed the study. The intervention group had significantly more nighttime sleep at posttest. After adjusting for baseline, the intervention group exhibited significantly less daytime sleep and more nighttime sleep. Person-centered dementia care may be effective for improving sleep of residents with dementia.

  4. Availability of Personal Transportation in Households of Elders: Age, Gender, and Residence Differences.

    Science.gov (United States)

    Cutler, Stephen J.; Coward, Raymond T.

    1992-01-01

    Used data from 1 percent Public Use Microdata Sample of 1980 Census of Population and Housing to examine correlates of availability of personal transportation in households of elders. Results indicated that availability of vehicles decreased with age, was highest for rural farm and lowest for central city residents, and was lower for women.…

  5. Frail aged persons residing in South African' homes for the aged ...

    African Journals Online (AJOL)

    . Subsidies (Circular No. 36), (Head Office Reference 51/6/3:2-3). !'moria: Government Printer, 1966. . 2. Whittakcr S, Prinsloo FR, Wicht CL, Janse van Rensburg ~. Frail ~ persons residing in South Afrian homes for the 8ged who ~~ hospnali-.

  6. 78 FR 42863 - Adjustment of Status to That of Person Admitted for Permanent Residence

    Science.gov (United States)

    2013-07-18

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOMELAND SECURITY 8 CFR Part 245 Adjustment of Status to That of Person Admitted for Permanent Residence CFR Correction 0 In Title 8 of the Code of Federal Regulations, revised as of January 1, 2013, on page 568, in...

  7. Frail aged persons residing in South African' homes for the aged ...

    African Journals Online (AJOL)

    The numbers and characteristics of white residents identified by medical and nursing staff to require more staff time and/or expertise and/or medical equipment than was available in rural homes for the aged in the Orange Free State were assessed. In the opinion of institution staff, 12,6% of extremely infirm aged persons ...

  8. Increasing social activity attendance in assisted living residents using personalized prompts and positive social attention.

    Science.gov (United States)

    Polenick, Courtney Allyn; Flora, Stephen Ray

    2013-08-01

    Low levels of social activity involvement may have negative implications on overall quality of life for older adults living in residential care settings. Despite the recent growth of assisted living (AL) facilities, few studies have examined social activity participation in this environment. The present study assessed the effects of two prompt procedures that included different amounts of positive social attention (personalized prompts alone and combined with brief conversation) on the social activity attendance of 8 AL residents. Personalized prompts were designed to appeal to each participant on the basis of preference assessments regarding activity interests and preferred types of activity participation. During treatment conditions, increases in attendance occurred not only following treatment prompts but also during activities that were not preceded by treatment prompts. Similar effects were observed for both treatment prompts. Results suggest that personalized prompts and positive social attention can increase weekly social activity attendance in AL residents.

  9. Acute stress in residents during emergency care: a study of personal and situational factors.

    Science.gov (United States)

    Dias, Roger Daglius; Scalabrini Neto, Augusto

    2017-05-01

    Providing care for simulated emergency patients may induce considerable acute stress in physicians. However, the acute stress provoked in a real-life emergency room (ER) is not well known. Our aim was to assess acute stress responses in residents during real emergency care and investigate the related personal and situational factors. A cross-sectional observational study was carried out at an emergency department of a tertiary teaching hospital. All second-year internal medicine residents were invited to voluntarily participate in this study. Acute stress markers were assessed at baseline (T1), before residents started their ER shift, and immediately after an emergency situation (T2), using heart rate, systolic, and diastolic blood pressure, salivary α-amylase activity, salivary interleukin-1 β, and the State-Trait Anxiety Inventory (STAI-s and STAI-t). Twenty-four residents were assessed during 40 emergency situations. All stress markers presented a statistically significant increase between T1 and T2. IL-1 β presented the highest percent increase (141.0%, p stress in residents. Resident experience, trait anxiety, and number of emergency procedures were independently associated with acute stress response.

  10. The Monty Hall Dilemma.

    Science.gov (United States)

    Granberg, Donald; Brown, Thad A.

    1995-01-01

    Examines people's behavior in the Monty Hall Dilemma (MHD), in which a person must make two decisions to win a prize. In a series of five studies, found that people misapprehend probabilities in the MHD. Discusses the MHD's relation to illusion of control, belief perseverance, and the status quo bias. (RJM)

  11. Hall A

    Data.gov (United States)

    Federal Laboratory Consortium — The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was designed to study electroand photo-induced reactions at very high luminosity...

  12. Hall C

    Data.gov (United States)

    Federal Laboratory Consortium — Hall C's initial complement of equipment (shown in the figure), includes two general-purpose magnetic spectrometers. The High Momentum Spectrometer (HMS) has a large...

  13. Personal satisfaction and mentorship are critical factors for today's resident surgeons to seek surgical training.

    Science.gov (United States)

    Lukish, Jeffrey; Cruess, David

    2005-11-01

    The specific aim of this study was to summarize the viewpoints of the Resident and Associate Society of the American College of Surgeons (RAS-ACS) membership regarding current training and quality of life-related issues prior to implementation of the new duty-hour guidelines. The goal was to gain insight of the members that may be useful to recruit and guide the future training of surgical residents. An Internet-based survey was developed to evaluate the viewpoints of RAS-ACS. The survey was administered by Esurveymaker.com via the ACS Web page from 2000 to 2003. RAS-ACS member participation was voluntary and anonymous. Analyses were performed to determine the frequency of response for each survey item. Two hundred thirty-five members completed the survey representing 5 per cent of RAS-ACS. Eighty-four per cent were general surgery residents. Personal satisfaction (64%) and mentorship (49%) were top factors for respondents to pursue surgical training; discussion with colleagues and future income was less important. Forty-five per cent reported that job performance was their most important concern during residency. A rewarding surgical career and family life were ranked as the most important expectations. Eighty-six per cent reported that they were satisfied with their residency, and 66 per cent reported that work hours should be limited. Personal satisfaction and mentorship were critical factors for members of the RAS-ACS to seek surgical training. Although most of the members report that work hours should be limited, an overwhelming majority reports satisfaction with surgical training prior to institution of the new duty-hour guidelines. Further emphasis on mentorship and work-hour reform may be beneficial in recruiting medical students into surgical residencies.

  14. Personal characteristics and participation in dance events of residents from home for the aged

    Directory of Open Access Journals (Sweden)

    Rute Estanislava Tolocka

    2010-06-01

    Full Text Available A growing elderly population and an increase in the number of residents of long-stayinstitutions are currently observed. One of the activities that provides benefits to these individualsis dancing, but little is known about this practice in these institutions. The objective of this studywas to identify factors that limit or encourage residents of these institutions to actively participatein dance events. This qualitative and exploratory study involved a group of 30 residents of a longstayinstitution (mean age: 72.6 ± 9.6 years and a group of 30 visitors (mean age: 68.1 ± 10.2years, who had participated in dance events for at least one year. The personal history relatedto dancing was obtained by semistructured interviews. The results showed that most respondersbegan dancing at a young age influenced by their families, attending country dances. However,changes have occurred over the years and these events have been greatly reduced at the institution.Less commitment to participate in activities and greater physical debilitation were observed inthe group of residents of the long-stay institution. These subjects also reported that they makefew friends during the event, receive little praise, and are most of the time only watching othersdancing. It was concluded that it would be necessary to offer activities that permit more activeparticipation, contributing to the development of the personal characteristics of the subjects, inorder to promote this practice which, in turn, could produce health benefits.

  15. [Burn-out, commitment, personality and experiences during work and training; survey among psychiatry residents].

    Science.gov (United States)

    Krebs, R; Ewalds, A L; van der Heijden, P T; Penterman, E J M; Grootens, K P

    2017-01-01

    In the last few years international studies have reported on increase in burn-out and depressive symptoms among psychiatry residents. In the field of research, however, commitment and dedication are now being mentioned more frequently as positive factors that counterbalance burn-out. To find out how a group of Dutch psychiatry residents feel about their work, to discover their degree of burn-out and commitment and to clarify the various factors involved. 59 psychiatry residents from four teaching hospitals were asked to complete questionnaires concerning burn-out (U-BOS-C), commitment (UWES-15) and personality (BFI-NL). Respondents were also asked to describe how they felt about their experiences during their work and to give their views on the instruction and training they were receiving. In the U-BOS-C section only four trainees (almost 7%) met the criteria for burn-out. In the BFI-NL section the psychiatry residents obtained significantly lower scores on neuroticism and higher scores on empathy than did a comparable norm group of a similar age. The scores of the psychiatry residents indicated that the term 'being proud of your work' was significantly related to a feeling of commitment and particularly to all subscales that reflected commitment. In our study the percentage of psychiatry residents with burn-out is significantly lower than the percentage reported elsewhere in the literature. In fact, our results demonstrate that the psychiatry residents who were the subject of our study regarded themselves as being emotionally stable, friendly and committed to their work.

  16. An assessment of residents' and fellows' personal finance literacy: an unmet medical education need.

    Science.gov (United States)

    Ahmad, Fahd A; White, Andrew J; Hiller, Katherine M; Amini, Richard; Jeffe, Donna B

    2017-05-29

    This study aimed to assess residents' and fellows' knowledge of finance principles that may affect their personal financial health. A cross-sectional, anonymous, web-based survey was administered to a convenience sample of residents and fellows at two academic medical centers.  Respondents answered 20 questions on personal finance and 28 questions about their own financial planning, attitudes, and debt. Questions regarding satisfaction with one's financial condition and investment-risk tolerance used a 10-point Likert scale (1=lowest, 10=highest).  Of 2,010 trainees, 422 (21%) responded (median age 30 years; interquartile range, 28-33). The mean quiz score was 52.0% (SD = 19.1). Of 299 (71%) respondents with student loan debt, 144 (48%) owed over $200,000.  Many respondents had other debt, including 86 (21%) with credit card debt. Of 262 respondents with retirement savings, 142 (52%) had saved less than $25,000. Respondents' mean satisfaction with their current personal financial condition was 4.8 (SD = 2.5) and investment-risk tolerance was 5.3 (SD = 2.3). Indebted trainees reported lower satisfaction than trainees without debt (4.4 vs. 6.2, F (1,419) = 41.57, p < .001).   Knowledge was moderately correlated with investment-risk tolerance (r=0.41, p < .001), and weakly correlated with satisfaction with financial status (r=0.23, p < .001). Residents and fellows had low financial literacy and investment-risk tolerance, high debt, and deficits in their financial preparedness.  Adding personal financial education to the medical education curriculum would benefit trainees.  Providing education in areas such as budgeting, estate planning, investment strategies, and retirement planning early in training can offer significant long-term benefits.

  17. Mental health in medical residents: relationship with personal, work-related, and sociodemographic variables

    Directory of Open Access Journals (Sweden)

    Karina Pereira-Lima

    2016-01-01

    Full Text Available Objective: To examine association of sociodemographic characteristics, personality traits, social skills, and work variables with anxiety, depression, and alcohol dependence in medical residents. Methods: A total of 270 medical residents completed the following self-report instruments: sociodemographic and work questionnaire, Patient Health Questionnaire-4 (PHQ-4, Alcohol Use Disorders Identification Test-3 (AUDIT-3, Revised NEO-Five Factor Inventory (NEO-FFI-R, and Social Skills Inventory (SSI-Del-Prette. Data were analyzed using descriptive statistics and univariate and multivariate logistic regression analyses. Results: Multivariate analysis showed an association of neuroticism (odds ratio [OR] 2.60, p < 0.001, social skills (OR 0.41, p < 0.01, and number of shifts (OR 1.91, p = 0.03 with anxiety or depression, and of male sex (OR 3.14, p = 0.01, surgical residency (OR 4.40, p = 0.001, extraversion (OR 1.80, p < 0.01, and number of shifts (OR 2.32, p = 0.04 with alcohol dependence. Conclusion: The findings support a multidetermined nature of mental health problems in medical residents, in addition to providing data that may assist in the design of preventive measures to protect the mental health of this group.

  18. Keeping up with the times: revising the dermatology residency curriculum in the era of molecular diagnostics and personalized medicine.

    Science.gov (United States)

    LaChance, Avery; Murphy, Michael J

    2014-11-01

    The clinical use of molecular diagnostics, genomics, and personalized medicine is increasing and improving rapidly over time. However, medical education incorporating the practical application of these techniques is lagging behind. Although instruction in these areas should be expanded upon and improved at all levels of training, residency provides a concentrated period of time in which to hone in on skills that are practically applicable to a trainee's specialty of choice. Although residencies in some fields, such as pathology, have begun to incorporate practical molecular diagnostics training, this area remains a relative gap in dermatology residency programs. Herein, we advocate for the incorporation of training in molecular diagnostics and personalized medicine into dermatology residency programs and propose a basic curriculum template for how to begin approaching these topics. By incorporating molecular diagnostics into dermatology residency training, dermatologists have the opportunity to lead the way and actively shape the specialty's transition into the era of personalized medicine. © 2014 The International Society of Dermatology.

  19. Swiss residents' speciality choices--impact of gender, personality traits, career motivation and life goals.

    Science.gov (United States)

    Buddeberg-Fischer, Barbara; Klaghofer, Richard; Abel, Thomas; Buddeberg, Claus

    2006-10-23

    The medical specialties chosen by doctors for their careers play an important part in the development of health-care services. This study aimed to investigate the influence of gender, personality traits, career motivation and life goal aspirations on the choice of medical specialty. As part of a prospective cohort study of Swiss medical school graduates on career development, 522 fourth-year residents were asked in what specialty they wanted to qualify. They also assessed their career motivation and life goal aspirations. Data concerning personality traits such as sense of coherence, self-esteem, and gender role orientation were collected at the first assessment, four years earlier, in their final year of medical school. Data analyses were conducted by univariate and multivariate analyses of variance and covariance. In their fourth year of residency 439 (84.1%) participants had made their specialty choice. Of these, 45 (8.6%) subjects aspired to primary care, 126 (24.1%) to internal medicine, 68 (13.0%) to surgical specialties, 31 (5.9%) to gynaecology & obstetrics (G&O), 40 (7.7%) to anaesthesiology/intensive care, 44 (8.4%) to paediatrics, 25 (4.8%) to psychiatry and 60 (11.5%) to other specialties. Female residents tended to choose G&O, paediatrics, and anaesthesiology, males more often surgical specialties; the other specialties did not show gender-relevant differences of frequency distribution. Gender had the strongest significant influence on specialty choice, followed by career motivation, personality traits, and life goals. Multivariate analyses of covariance indicated that career motivation and life goals mediated the influence of personality on career choice. Personality traits were no longer significant after controlling for career motivation and life goals as covariates. The effect of gender remained significant after controlling for personality traits, career motivation and life goals. Gender had the greatest impact on specialty and career choice, but

  20. Swiss residents' speciality choices – impact of gender, personality traits, career motivation and life goals

    Directory of Open Access Journals (Sweden)

    Abel Thomas

    2006-10-01

    Full Text Available Abstract Background The medical specialities chosen by doctors for their careers play an important part in the development of health-care services. This study aimed to investigate the influence of gender, personality traits, career motivation and life goal aspirations on the choice of medical speciality. Methods As part of a prospective cohort study of Swiss medical school graduates on career development, 522 fourth-year residents were asked in what speciality they wanted to qualify. They also assessed their career motivation and life goal aspirations. Data concerning personality traits such as sense of coherence, self-esteem, and gender role orientation were collected at the first assessment, four years earlier, in their final year of medical school. Data analyses were conducted by univariate and multivariate analyses of variance and covariance. Results In their fourth year of residency 439 (84.1% participants had made their speciality choice. Of these, 45 (8.6% subjects aspired to primary care, 126 (24.1% to internal medicine, 68 (13.0% to surgical specialities, 31 (5.9% to gynaecology & obstetrics (G&O, 40 (7.7% to anaesthesiology/intensive care, 44 (8.4% to paediatrics, 25 (4.8% to psychiatry and 60 (11.5% to other specialities. Female residents tended to choose G&O, paediatrics, and anaesthesiology, males more often surgical specialities; the other specialities did not show gender-relevant differences of frequency distribution. Gender had the strongest significant influence on speciality choice, followed by career motivation, personality traits, and life goals. Multivariate analyses of covariance indicated that career motivation and life goals mediated the influence of personality on career choice. Personality traits were no longer significant after controlling for career motivation and life goals as covariates. The effect of gender remained significant after controlling for personality traits, career motivation and life goals. Conclusion

  1. Hamaoka Atomic Energy Hall, Chubu Electric Power Co., Inc

    International Nuclear Information System (INIS)

    Kawasaki, Yukio

    1979-01-01

    Hamaoka Nuclear Power Station was constructed in the very large site of about 1.6 million m 2 surrounded by sand dunes and pine forests at the southern tip of Shizuoka Prefecture. Hamaoka Atomic Energy Hall was built on the right side of this power station. This hall had been planned as a part of the works commemorating the 20th anniversary of the founding of the company, and was opened in August, 1972. The building is of steel frame type, and has two floors of 1135 m 2 total area. The first floor comprises cinema room, power generation corner and open gallery, and the second floor comprises meeting room, native land corner and observation room. Moreover, there is observation platform on the roof. The purpose of the hall is coexistence and coprosperity with the regional residents, and 13 persons make explanations to visitors having reached to 1.9 million as of the end of June, 1979. It is incorporated in the sightseeing route centering around the Omaezaki lighthouse. The cinema hall accommodates 120 men, and the films concerning nuclear power generation and the construction of a nuclear power plant are shown. In the power generation corner, the explanation on nuclear power generation is made with models and panels. The third hall is being built now as energy corner, and it will be completed in autumn, 1979. (Kako, I.)

  2. Textual Analysis of General Surgery Residency Personal Statements: Topics and Gender Differences.

    Science.gov (United States)

    Ostapenko, Laura; Schonhardt-Bailey, Cheryl; Sublette, Jessica Walling; Smink, Douglas S; Osman, Nora Y

    2017-10-25

    Applicants to US general surgery residency training programs submit standardized applications. Applicants use the personal statement to express their individual rationale for a career in surgery. Our research explores common topics and gender differences within the personal statements of general surgery applicants. We analyzed the electronic residency application service personal statements of 578 applicants (containing 3,82,405 words) from Liaison Committee on Medical Education-accredited medical schools to a single ACGME-accredited general surgery program using an automated textual analysis program to identify common topics and gender differences. Using a recursive algorithm, the program identified common words and clusters, grouping them into topic classes, which are internally validated. We identified and labeled 8 statistically significant topic classes through independent review: "my story," "the art of surgery," "clinical vignettes," "why I love surgery," "residency program characteristics," "working as a team," "academics and research," and "global health and policy." Although some classes were common to all applications, we also identified gender-specific differences. Notably, women were significantly more likely than men to be represented within the class of "working as a team." (p differences between the statements of men and women. Women were more likely to discuss surgery as a team endeavor while men were more likely to focus on the details of their surgical experiences. Our work mirrors what has been found in social psychology research on gender-based differences in how men and women communicate their career goals and aspirations in other competitive professional situations. Copyright © 2017 Association of Program Directors in Surgery. Published by Elsevier Inc. All rights reserved.

  3. Observation of the Zero Hall Plateau in a Quantum Anomalous Hall Insulator

    Energy Technology Data Exchange (ETDEWEB)

    Feng, Yang; Feng, Xiao; Ou, Yunbo; Wang, Jing; Liu, Chang; Zhang, Liguo; Zhao, Dongyang; Jiang, Gaoyuan; Zhang, Shou-Cheng; He, Ke; Ma, Xucun; Xue, Qi-Kun; Wang, Yayu

    2015-09-16

    We report experimental investigations on the quantum phase transition between the two opposite Hall plateaus of a quantum anomalous Hall insulator. We observe a well-defined plateau with zero Hall conductivity over a range of magnetic field around coercivity when the magnetization reverses. The features of the zero Hall plateau are shown to be closely related to that of the quantum anomalous Hall effect, but its temperature evolution exhibits a significant difference from the network model for a conventional quantum Hall plateau transition. We propose that the chiral edge states residing at the magnetic domain boundaries, which are unique to a quantum anomalous Hall insulator, are responsible for the novel features of the zero Hall plateau.

  4. Characteristics and Travel Patterns of New York Residents: Subpopulations of Persons with a Disability in 2009

    Energy Technology Data Exchange (ETDEWEB)

    Hwang, Ho-Ling [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Reuscher, Tim [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Wilson, Daniel W. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-08-01

    In this study, Oak Ridge National Laboratory (ORNL) was tasked by the NYS Department of Transportation (DOT) to conduct a detailed examination of travel behaviors, and identify patterns and trends, on several NYS subpopulations, including disabled persons. Unlike other studies that concentrated on national level statistics, this research is focused on examining issues associated with travelers among NYS residents only. For each special subpopulation group, ORNL will identify differences, if any, in travel patterns that are attributable to demographic characteristics, household characteristics, modal characteristics, geographic location, and other concepts. Focus will be given to trip frequency, trip chaining, as well as travel by time of day, trip purpose, and mode choice.

  5. Resident-Assisted Montessori Programming (RAMP): training persons with dementia to serve as group activity leaders.

    Science.gov (United States)

    Camp, Cameron J; Skrajner, Michael J

    2004-06-01

    The purpose of this study was to determine the effects of an activity implemented by means of Resident-Assisted Montessori Programming (RAMP). Four persons with early-stage dementia were trained to serve as leaders for a small-group activity played by nine persons with more advanced dementia. Assessments of leaders' ability to learn the procedures of leading a group, as well as their satisfaction with this role, were taken, as were measures of players' engagement and affect during standard activities programming and RAMP activities. Leaders demonstrated the potential to fill the role of group activity leader effectively, and they expressed a high level of satisfaction with this role. Players' levels of positive engagement and pleasure during the RAMP activity were higher than during standard group activities. This study suggests that to the extent that procedural learning is available to persons with early-stage dementia, especially when they are assisted with external cueing, these individuals can successfully fill the role of volunteers when working with persons with more advanced dementia. This can provide a meaningful social role for leaders and increase access to high quality activities programming for large numbers of persons with dementia. Copyright 2004 The Gerontological Society of America

  6. "Learning about Your Residents": How Assisted Living Residence Medication Aides Decide to Administer Pro Re Nata Medications to Persons with Dementia

    Science.gov (United States)

    Carder, Paula C.

    2012-01-01

    Purpose: This study identified how unlicensed staff members decide to administer medications prescribed pro re nata (PRN) to residents of assisted living (AL) settings designated for persons with dementia. Theories of knowledge, including explicit and implicit knowledge, discretion, and judgment, guided the analysis. Design and Methods: Data were…

  7. The Importance of Personal Possessions for the Development of a Sense of Home of Nursing Home Residents

    NARCIS (Netherlands)

    L.A.G. Willems; W. van Kersbergen; C.M.C. Heesakkers; Joost van Hoof; B.M. Janssen; M.E. Nieboer; L.E.J. Severijns; M.L. Janssen; H.R. Marston

    2016-01-01

    Personal possessions of nursing home residents can contribute to their sense of home. This study investigated which of the personal belongings were considered most important, and if these items indeed contributed to a sense of home. A qualitative research was conducted with 27 nursing home

  8. A study to determine the dimensions of job satisfaction, job turnover tendency, individual personalities and psychological well-being in Tehran City Hall

    Directory of Open Access Journals (Sweden)

    Seyed Morteza Gholami AliAbadi

    2014-06-01

    Full Text Available Among various indices of job attitudes, job satisfaction has gained especial attention by researchers and employers. Its measurement dates back to older times and the investigation of the influential factors on it are newer. Furthermore, because of its influences on organizations and people, job satisfaction has gained an increasing importance. Among various influential factors on job satisfaction and job turn over, the effect of individual personalities and psychological Well-Being is undeniable. In this article, we identify and categorize the significant factors in the four elements of job turnover, job satisfaction, individual traits and psychological Well-Being. We investigate nine factors of job satisfaction with 36 questions, two factors of the field of job turnover with seven questions, individual personalities with forty four questions and psychological Well-Being with eighteen questions and categorize them after doing a factor analysis. In this categorization, the dimensions of job satisfaction are reduced to seven dimensions. Job turnover is provided into two new dimensions. Individual personalities are categorized in eight main dimensions and the dimensions of psychological Well-Being are reduced to four dimensions. The data of this research has been gathered from 199 employees of Tehran city hall.

  9. Caregiver Person-Centeredness and Behavioral Symptoms in Nursing Home Residents With Dementia: A Timed-Event Sequential Analysis.

    Science.gov (United States)

    Gilmore-Bykovskyi, Andrea L; Roberts, Tonya J; Bowers, Barbara J; Brown, Roger L

    2015-06-01

    Evidence suggests that person-centered caregiving approaches may reduce dementia-related behavioral symptoms; however, little is known about the sequential and temporal associations between specific caregiver actions and behavioral symptoms. The aim of this study was to identify sequential associations between caregiver person-centered actions, task-centered actions, and resident behavioral symptoms and the temporal variation within these associations. Videorecorded observations of naturally occurring interactions (N = 33; 724min) between 12 nursing home (NH) residents with dementia and eight certified nursing assistants were coded for caregiver person-centered actions, task-centered actions, and resident behavioral symptoms and analyzed using timed-event sequential analysis. Although caregiver actions were predominantly person-centered, we found that resident behavioral symptoms were significantly more likely to occur following task-centered caregiver actions than person-centered actions. Findings suggest that the person-centeredness of caregivers is sequentially and temporally related to behavioral symptoms in individuals with dementia. Additional research examining the temporal structure of these relationships may offer valuable insights into the utility of caregiver person-centeredness as a low-cost strategy for improving behavioral symptom management in the NH setting. © The Author 2015. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  10. Frequency of micronuclei among persons resident in the vicinity of a mineral sand processing factory in Pulmoddai, Sri Lanka.

    Science.gov (United States)

    Warnakulasuriya, Tania; Williams, Senani; Dabarera, Mangala; Rodrigo, Kusum; Weerakkody, Thiwanka; Wickremasinghe, Rajitha

    2017-10-17

    Lanka Mineral Sands Ltd (LMS), a government-owned company, has been mining mineral sands including monazite which contains thorium (Th) at Pulmoddai, Sri Lanka since 1957. Th emits alpha particles on decay and gamma rays are emitted by the daughter products. The cytokinesis-blocked micronucleus (MN) assay is popular for large scale radiation exposure studies as it is an easy, fast and reliable method of biodosimetry. The objective of the study was to determine the frequency of micronuclei among persons residing in the vicinity of LMS. A cross-sectional study was conducted from November 2012 to September 2016 among persons 35-45 years of age to evaluate the frequency of micronuclei in peripheral blood lymphocytes. Fifty-three employees of LMS factory, 25 residents within 5 km from LMS, 25 residents 20-25 km from LMS and 29 residents from >50 km away from LMS were included in the study. The highest median frequency of micronuclei per 1000 binucleated (BN) cells was in the group residing within 5 km from LMS with a median (IQ range) of 0.67 (0.17-2.17). The median (IQ range) of MN frequency of employees of LMS, residents 20-25 km from LMS and residents >50 km from LMS were 0.66 (0.16-1.16), 0.33 (0.00-0.67) and 0.33 (0.33-0.67), respectively. There was no significant difference in the MN frequency between employees of LMS and the group residing within 5 km from LMS. Being a resident of Pulmoddai and being exposed to X-rays were significant predictors of MN frequency. Persons residing within 5 km from LMS had a higher risk of MN formation irrespective of being employed at LMS. © The Author 2017. Published by Oxford University Press on behalf of the UK Environmental Mutagen Society. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  11. Personal inhalation exposure to polycyclic aromatic hydrocarbons and their nitro-derivatives in rural residents in northern Thailand.

    Science.gov (United States)

    Orakij, Walaiporn; Chetiyanukornkul, Thaneeya; Chuesaard, Thanyarat; Kaganoi, Yuichi; Uozaki, Waka; Homma, Chiharu; Boongla, Yaowatat; Tang, Ning; Hayakawa, Kazuichi; Toriba, Akira

    2017-09-18

    A personal inhalation exposure and cancer risk assessment of rural residents in Lampang, Thailand, was conducted for the first time. This highlighted important factors that may be associated with the highest areal incidence of lung cancer. Personal exposure of rural residents to polycyclic aromatic hydrocarbons (PAHs) and their nitro-derivatives (NPAHs) through inhalation of fine particulate matter (PM 2.5 ) was investigated in addition to stationary air sampling in an urban area. The personal exposure of the subjects to PM 2.5 ranged from 44.4 to 316 μg/m 3 , and the concentrations of PAHs (4.2-224 ng/m 3 ) and NPAHs (120-1449 pg/m 3 ) were higher than those at the urban site, indicating that personal exposure was affected by microenvironments through individual activities. The smoking behaviors of the rural residents barely affected their exposure to PAHs and NPAHs compared to other sources. The most important factor concerning the exposure of rural populations to PAHs was cooking activity, especially the use of charcoal open fires. The emission sources for rural residents and urban air were evaluated using diagnostic ratios, 1-nitropyrene/pyrene, and benzo[a]pyrene/benzo[ghi]perylene. Their analyses showed a significant contribution to emission from residents' personal activities in addition to the atmospheric environment. Furthermore, the personal inhalation cancer risks for all rural subjects exceeded the USEPA guideline value, suggesting that the residents have a potentially increased cancer risk. The use of open fires showed the highest cancer risk. A reduction in exposure to air pollutants for the residents could potentially be achieved by using clean fuel such as liquid petroleum gas or electricity for daily cooking.

  12. How residents and interns utilise and perceive the personal digital assistant and UpToDate

    Directory of Open Access Journals (Sweden)

    Lim Tow

    2008-07-01

    Full Text Available Abstract Background In this era of evidence-based medicine, doctors are increasingly using information technology to acquire medical knowledge. This study evaluates how residents and interns utilise and perceive the personal digital assistant (PDA and the online resource UpToDate. Methods This is a questionnaire survey of all residents and interns in a tertiary teaching hospital. Results Out of 168 doctors, 134 (79.8% responded to the questionnaire. Only 54 doctors (40.3% owned a PDA. Although these owners perceived that the PDA was most useful for providing drug information, followed by medical references, scheduling and medical calculators, the majority of them did not actually have medical software applications downloaded on their PDAs. The greatest concerns highlighted for the PDA were the fear of loss and breakage, and the preference for working with desktop computers and paper. Meanwhile, only 76 doctors (56.7% used UpToDate, even though the hospital had an institutional subscription for it. Although 93.4% of these users would recommend UpToDate to a colleague, only 57.9% stated that the use of UpToDate had led to a change in their management of patients. Conclusion Although UpToDate and various PDA software applications were deemed useful by some of the residents and interns in our study, both digital tools were under-utilised. More should be done to facilitate the use of medical software applications on PDAs, to promote awareness of tools for evidence-based medicine such as UpToDate, and to facilitate the application of evidence-based medicine in daily clinical practice.

  13. How residents and interns utilise and perceive the personal digital assistant and UpToDate.

    Science.gov (United States)

    Phua, Jason; Lim, Tow Keang

    2008-07-14

    In this era of evidence-based medicine, doctors are increasingly using information technology to acquire medical knowledge. This study evaluates how residents and interns utilise and perceive the personal digital assistant (PDA) and the online resource UpToDate. This is a questionnaire survey of all residents and interns in a tertiary teaching hospital. Out of 168 doctors, 134 (79.8%) responded to the questionnaire. Only 54 doctors (40.3%) owned a PDA. Although these owners perceived that the PDA was most useful for providing drug information, followed by medical references, scheduling and medical calculators, the majority of them did not actually have medical software applications downloaded on their PDAs. The greatest concerns highlighted for the PDA were the fear of loss and breakage, and the preference for working with desktop computers and paper. Meanwhile, only 76 doctors (56.7%) used UpToDate, even though the hospital had an institutional subscription for it. Although 93.4% of these users would recommend UpToDate to a colleague, only 57.9% stated that the use of UpToDate had led to a change in their management of patients. Although UpToDate and various PDA software applications were deemed useful by some of the residents and interns in our study, both digital tools were under-utilised. More should be done to facilitate the use of medical software applications on PDAs, to promote awareness of tools for evidence-based medicine such as UpToDate, and to facilitate the application of evidence-based medicine in daily clinical practice.

  14. Resident Advisor General Intelligence, Emotional Intelligence, Personality Dimensions, and Internal Belief Characteristics as Predictors of Rated Performance

    Science.gov (United States)

    Wu, Max B.; Stemler, Steven

    2008-01-01

    Resident Advisors (RAs) have a significant hand in helping students adjust and thrive in college life. Given the importance of selecting high-performing RAs, this study sought to examine how well various measures of intelligence (e.g., general, emotional) in addition to personality and additional "internal belief" characteristics predict…

  15. Technology in Residence.

    Science.gov (United States)

    Fox, Jordan

    1999-01-01

    Discusses the necessity for incorporating current technology in today's college residence halls to meet the more diverse and continued activities of its students. Technology addressed covers data networking and telecommunications, heating and cooling systems, and fire-safety systems. (GR)

  16. Experimental halls workshop summary

    International Nuclear Information System (INIS)

    Thorndike, A.

    1976-01-01

    A brief discussion is given of: (1) pros and cons of open areas as compared with enclosed halls; (2) experimental hall needs of ep, anti p p, and other options; (3) hall for the lepton detector; and, (4) hall for the hadron spectrometer

  17. "Good Enough" Psychiatric Residency Training in Borderline Personality Disorder: Challenges, Choice Points, and a Model Generalist Curriculum.

    Science.gov (United States)

    Unruh, Brandon T; Gunderson, John G

    2016-01-01

    While the public health burden posed by borderline personality disorder (BPD) rivals that associated with other major mental illnesses, the prevailing disposition of psychiatrists toward the disorder remains characterized by misinformation, stigma, aversive attitudes, and insufficient familiarity with effective generalist treatments that can be delivered in nonspecialized health care settings. Residency training programs are well positioned to better equip the next generation of psychiatrists to address these issues, but no consensus or guidelines currently exist for what and how residents should be taught about managing BPD. Instead, disproportionately limited curricular time, teaching of non-evidence-based approaches, and modeling of conceptually confused combinations of techniques drawn from specialty BPD treatments are offered. In this article, we (1) explain why training in a generalist model is sensible and why alternative approaches are not appropriate for residents, (2) propose a plan for giving residents adequate training via a generalist model, highlighting minimal didactic and clinical-training objectives (dubbed "core competencies" and "milestones") and a model curriculum developed at the Massachusetts General Hospital/McLean Hospital residency program, and (3) describe obstacles to implementation of effective generalist training posed by infrastructural, faculty-centered, and resident-centered variables.

  18. How personality traits affect clinician-supervisors' work engagement and subsequently their teaching performance in residency training.

    Science.gov (United States)

    Scheepers, Renée A; Arah, Onyebuchi A; Heineman, Maas Jan; Lombarts, Kiki M J M H

    2016-11-01

    Clinician-supervisors often work simultaneously as doctors and teachers. Supervisors who are more engaged for their teacher work are evaluated as better supervisors. Work engagement is affected by the work environment, yet the role of supervisors' personality traits is unclear. This study examined (i) the impact of supervisors' personality traits on work engagement in their doctors' and teachers' roles and (ii) how work engagement in both roles affects their teaching performance. Residents evaluated supervisors' teaching performance, using the validated System for Evaluation of Teaching Qualities. Supervisors' reported work engagement in doctor and teacher roles separately using the validated Utrecht Work Engagement Scale. Supervisors' personality traits were measured using the Big Five Inventory's five factor model covering conscientiousness, agreeableness, extraversion, emotional stability and openness. Overall, 549 (68%) residents and 636 (78%) supervisors participated. Conscientiousness, extraversion and agreeableness were positively associated with supervisors' engagement in their teacher work, which was subsequently positively associated with teaching performance. Conscientious, extraverted, and agreeable supervisors showed more engagement with their teacher work, which made them more likely to deliver adequate residency training. In addition to optimizing the work environment, faculty development and career planning could be tailor-made to fit supervisors' personality traits.

  19. Changes in the personal dignity of nursing home residents: a longitudinal qualitative interview study

    NARCIS (Netherlands)

    Oosterveld-Vlug, Mariska G.; Pasman, H. Roeline W.; van Gennip, Isis E.; Willems, Dick L.; Onwuteaka-Philipsen, Bregje D.

    2013-01-01

    Most nursing home residents spend the remainder of their life, until death, within a nursing home. As preserving dignity is an important aim of the care given here, insight into the way residents experience their dignity throughout their entire admission period is valuable. To investigate if and how

  20. Changes in the Personal Dignity of Nursing Home Residents: A Longitudinal Qualitative Interview Study

    NARCIS (Netherlands)

    Oosterveld-Vlug, M.G.; Pasman, H.R.W.; van Gennip, I.E.; Willems, D.L.; Onwuteaka-Philipsen, B.D.

    2013-01-01

    Background:Most nursing home residents spend the remainder of their life, until death, within a nursing home. As preserving dignity is an important aim of the care given here, insight into the way residents experience their dignity throughout their entire admission period is valuable.Aim:To

  1. Ethics and the Treatment of the Mentally Ill, Homeless Person: a Perspective on Psychiatry Resident Training.

    Science.gov (United States)

    Stovall, Jeffrey; Fleisch, Sheryl B; McQuistion, Hunter L; Hackman, Ann; Harris, Toi

    2016-08-01

    The authors outline the unique ethical challenges that psychiatry residents face in working with individuals who are homeless and mentally ill. The authors also propose steps to develop effective teaching methods with residents working with these patients. The authors reviewed literature relevant to the training of psychiatry residents in ethics and treating individuals who are homeless and mentally ill. The authors summarize current literature and, with the use of case examples, provide guidelines for effective teaching. Teaching psychiatry residents who are working in the community with individuals who are mentally ill and homeless needs to address a number of unique ethical conflicts that arise in this area. The authors outline approaches to this teaching.

  2. When the Reading Room Meets the Team Room: Resident Perspectives From Radiology and Internal Medicine on the Effect of Personal Communication After Implementing a Resident-Led Radiology Rounds.

    Science.gov (United States)

    Klobuka, Andrew J; Lee, John; Buranosky, Raquel; Heller, Matthew

    2018-02-13

    Current radiology and internal medicine (IM) residents have trained to varying degrees depending on program in the post picture archiving and communication systems implementation era and thus have largely missed out on the benefits of in-person, 2-way communication between radiologists and consulting clinicians. The purpose of this study is to broadly explore resident perspectives from these groups on the desire for personal contact between radiologists and referring physicians and the effect of improved contact on clinical practice. A radiology rounds was implemented in which radiology residents travel to the IM teaching service teams to discuss their inpatients and review ordered imaging biweekly. Surveys were given to both cohorts following 9 months of implementation. A total of 23/49 diagnostic radiology (DR) and 72/197 IM residents responded. In all, 83% of DR and 96% of IM residents desired more personal contact between radiologists and clinicians. Of all, 92% of DR residents agree that contact with referring clinicians changes their approach to a study, 96% of IM residents agree that personal contact with a radiologist has changed patient management in a way that they otherwise would not have done having simply read a report, 85% of DR residents report that more clinician contact will improve resource use, and 96% report that it will improve care quality. Furthermore, 99% of IM residents report that increased access to a radiologist would make selecting the most appropriate imaging study easier in various clinical scenarios. A majority of IM residents prefer radiology reports that provide specific next-step recommendations and that include arrows/key-image series. We conclude that the newest generation of physicians is already attuned to the value of a radiologist who plays an active, in-person role in the clinical decision-making process. Copyright © 2018 Elsevier Inc. All rights reserved.

  3. [Sleep deprivation effects on cognitive, psychomotor skills and its relationship with personal characteristics of resident doctors].

    Science.gov (United States)

    Hamui-Sutton, Liz; Barragán-Pérez, Virginia; Fuentes-García, Ruth; Monsalvo-Obregón, Erika Cristina; Fouilloux-Morales, Claudia

    2013-01-01

    In countries such as United States and European Nations changes have been proposed regarding to duty and academic structure of specialists in training, this implies adjustments in the norms concerning the number of hours a week that residents work. The main argument which has underpinned such transformations is based on the assumption that excessive working hours (more than 16 hours uninterrupted) cause cognitive and psychomotor disorders in residents. To evaluate the association between sleep deprivation and cognitive and psychomotor skills of a sample of residents of different specialties of Medicine. Longitudinal study with measurements pre and post shifts, in 31 residents of Medicine. The measured variables were: cognitive and psychomotor skills, demographic data and conditions of the shift, quality of sleep and psychopathology. 81% residents showed detriment in at least one of the tests, however, in psychomotor skills significant different results were found in CPR maneuvers between pre and post shift with an improvement in scores. Sleep deprivation causes detriment of cognitive and psychomotor skills. While our results can't be generalized, they may constitute a precedent for possible changes in the working hours of medical residencies.

  4. The role of Balint group training in the professional and personal development of family medicine residents.

    Science.gov (United States)

    Player, Marty; Freedy, John R; Diaz, Vanessa; Brock, Clive; Chessman, Alexander; Thiedke, Carolyn; Johnson, Alan

    2018-01-01

    This paper presents a study based on the participation of PGY2 and PGY3 family medicine residents in Balint seminars that occurred twice monthly for 24 months. Balint groups were cofacilitated by leader pairs experienced with the Balint method. Prior to residency graduation, 18 of 19 eligible resident physicians (94.5%) completed 30- to 60-min semistructured interviews conducted by a research assistant. Resident physicians were told that these individual interviews concerned "…how we teach communication in residency." The deidentified transcripts from these interviews formed the raw data that were coded for positive (n = 9) and negative (n = 3) valence themes by four faculty coders utilizing an iterative process based on grounded theory. The consensus positive themes included several elements that have previously been discussed in published literature concerning the nature of Balint groups (e.g., being the doctor that the patient needs, reflection, empathy, blind spots, bonding, venting, acceptance, perspective taking, and developing appreciation for individual experiences). The negative themes pointed to ways of possibly improving future Balint offerings in the residency setting ( repetitive, uneasiness, uncertain impact). These findings appear to have consistency with seminal writings of both Michael and Enid Balint regarding the complex nature of intrapsychic and interpersonal skills required to effectively manage troubling doctor-patient relationships. The implications of findings for medical education (curriculum) development as well as future research efforts are discussed.

  5. Resident use of the Internet, e-mail, and personal electronics in the care of surgical patients.

    Science.gov (United States)

    Plant, Mathew A; Fish, Joel S

    2015-01-01

    The use of smartphones, e-mail, and the Internet has affected virtually all areas of patient care. Current university and hospital policies concerning the use of devices may be incongruent with day-to-day patient care. The goal was to assess the current usage patterns of the Internet, e-mail, and personal electronics for clinical purposes by surgical residents as well as their communication habits and preferences. Also assessed was residents' knowledge regarding the institutional policies surrounding these issues. Surgical residents (n = 294) at a large teaching institution were surveyed regarding their knowledge of university policies as well as daily use of various communication technologies. Communication preferences were determined using theoretical clinical scenarios. Our survey with a response rate of 54.7% (n = 161) revealed that 93.8% of participants indicated daily Internet use for clinical duties. Most respondents (72%) were either completely unaware of the existence of guidelines for its use or aware but had no familiarity with their content. Use of e-mail for clinical duties was common (85%), and 74% of the respondents rated e-mail as "very important" or "extremely important" for patient care. Everyone who responded had a mobile phone with 98.7% being "smartphones," which the majority (82.9%) stated was "very important" or "extremely important" for patient care. Text messaging was the primary communication method for 57.8% of respondents. The traditional paging system was the primary communication method for only 1.3% of respondents and the preferred method for none. Daily use of technology is the norm among residents; however, knowledge of university guidelines was exceedingly low. Residents need better education regarding current guidelines. Current guidelines do not reflect current clinical practice. Hospitals should consider abandoning the traditional paging system and consider facilitating better use of residents' mobile phones.

  6. Comportamento alimentar em moradia estudantil: um espaço para promoção da saúde Food behavior in student residence halls: a setting for health promotion

    Directory of Open Access Journals (Sweden)

    Hayda Josiane Alves

    2007-04-01

    Full Text Available OBJETIVO: Descrever qualitativamente o comportamento alimentar de estudantes residentes em moradia universitária. MÉTODOS: Estudo quanti-qualitativo realizado com uma amostra sorteada de cem estudantes universitários, residentes em moradia estudantil no município de Campinas, SP, em 2004. Foram feitas entrevistas utilizando-se formulário para colher o recordatório alimentar nas últimas 24 horas, incluindo questões abertas relativas ao sistema de compras e práticas de consumo. Foram criados critérios para análise da qualidade das refeições. Foram utilizados os testes qui-quadrado e o exato de Fisher, ao nível de significância de 5%. Nas entrevistas foram obtidos e analisados dados de natureza representacional, com base na teoria das representações sociais de Moscivici. RESULTADOS: Avaliação do recordatório 24 horas: desjejum, 30% não consumiram, 13% foram completos, 37% padrão e 20% incompletos; almoço, 5% não consumiram, 72% consumiram refeição completa e 23% incompleta; jantar, 1% não consumiu, 36% foram completos e 63% incompletos. A refeição de melhor qualidade foi o almoço, e dos estudantes que almoçaram, 63% o fizeram no restaurante universitário. Dos entrevistados, 48% não ingeriram nenhuma fruta e 39% não ingeriram leite no dia. A maioria (69% apresentou comportamento alimentar individual e 43% consideraram que o fato de comer em companhia alterava positivamente sua alimentação. A experiência de passar a prover a própria alimentação modifica comportamentos e representações entre os estudantes acerca do ato alimentar. CONCLUSÕES: A qualidade da alimentação, os padrões de comensalidade e as representações sociais do ato alimentar oferecem subsídios para o desenvolvimento de práticas de cuidado com a alimentação e promoção à saúde.OBJECTIVE: To qualitatively describe food practices of students living in a residence hall. METHODS: A quantitative and qualitative study was carried out in a

  7. Developing a rich definition of the person/residence to support person-oriented models of consumer product usage

    Science.gov (United States)

    Person Oriented Models (POMs) provide a basis for simulating aggregate chemical exposures in a population over time (Price and Chaisson, 2005). POMs assign characteristics to simulated individuals that are used to determine the individual’s probability of interacting with e...

  8. Frail aged persons residing in South African homes for the aged ...

    African Journals Online (AJOL)

    that the facilities for accommodation and medical and nursing .... CCF = congestive cardiac failure; COAD = chronic obstructive airways disease; ... Nursing care. Among the 41 residents classified as 'requiring hospitali- sation', there were 15 who were identified by the institution staff as requiring more nursing care than ...

  9. In-State-Tuition for Unauthorized Residents: Teaching a Person to Fish

    Science.gov (United States)

    Dryden, Joe; Martinez, Cristina

    2014-01-01

    Illegal immigration has become one of the most important issues we face as a nation, and as greater attention is focused on the sociological and economic impact of illegal immigration, policies related to in-state-tuition for unauthorized residents are in a state of flux. Since 2005, the number of states offering in-state-tuition for unauthorized…

  10. Resident resistance.

    Science.gov (United States)

    Price, J L; Cleary, B

    1999-01-01

    Clearly, faculty must work hard with residents to explore the nature of their resistance to a program's learning and growth opportunities. Initial steps to a deeper, more effective, and longer-lasting change process must be pursued. If resident resistance is mishandled or misunderstood, then learning and professional growth may be sidetracked and the purposes of residency training defeated. Listening to the whole person of the resident and avoiding the trap of getting caught up in merely responding to select resident behaviors that irritate us is critical. Every faculty member in the family practice residency program must recognize resistance as a form of defense that cannot immediately be torn down or taken away. Resident defenses have important purposes to play in stress reduction even if they are not always healthy. Residents, especially interns, use resistance to avoid a deeper and more truthful look at themselves as physicians. A family practice residency program that sees whole persons in their residents and that respects resident defenses will effectively manage the stress and disharmony inherent to the resistant resident.

  11. A Framework for Residence Hall Community Development.

    Science.gov (United States)

    Davis, Alan H.; Daugherty, Michael S.

    This paper addresses the issue of improving student retention and quality of life on campus through the application of principles expressed by Sabre (1980) involving community development. Sabre's ethical principle of nurturing the capacity for mutual persuasion is discussed as a central vision and purpose for organizing and guiding community…

  12. Case X v. Staatssecretaris van Financiën: Fractional Allocation of Personal and Family Tax Benefits for EU Resident Individuals with Multi-State Income

    OpenAIRE

    Niesten, Hannelore

    2017-01-01

    According to the well-established principles of the Schumacker-doctrine, a source state does not have to grant personal and family tax benefits, applicable for its own residents, unless (1) the non-resident earns ‘all or almost all’ his family income in the working state, and (2) the income in the residence state is insufficient to take into account the personal and family circumstances. This article critically analyses the judgment of the Court of Justice in the X-case, where the Court had t...

  13. Skyrmions and Hall viscosity

    OpenAIRE

    Kim, Bom Soo

    2017-01-01

    We discuss the contribution of magnetic Skyrmions to the Hall viscosity and propose a simple way to identify it in experiments. The topological Skyrmion charge density has a distinct signature in the electric Hall conductivity that is identified in existing experimental data. In an electrically neutral system, the Skyrmion charge density is directly related to the thermal Hall conductivity. These results are direct consequences of the field theory Ward identities, which relate various physica...

  14. Personal exposure to fine particles (PM2.5) and respiratory inflammation of common residents in Hong Kong.

    Science.gov (United States)

    Fan, Zhanlan; Pun, Vivian C; Chen, Xiao-Cui; Hong, Qiu; Tian, Linwei; Ho, Steven Sai-Hang; Lee, Shun-Cheng; Tse, Lap Ah; Ho, Kin-Fai

    2018-02-17

    Given the lack of research on the personal exposure to fine particles (PM 2.5 ) in Hong Kong, we examined the association between short-term personal exposure to PM 2.5 and their constituents and inflammation in exhaled breath in a sample of healthy adult residents. Forty-six participants underwent personal PM 2.5 monitoring for averagely 6 days to obtain 276 samples. Fractional exhaled nitric oxide (FeNO), a biomarker of inflammation in exhaled breath, was measured at the end of each 24-h personal monitoring. PM 2.5 chemical constituents, including organic carbon, elemental carbon, 16 polycyclic aromatic hydrocarbons (PAHs), and 6 phthalate esters, were speciated from the personal samples collected. A mixed-effects model was used to estimate the association of PM 2.5 and their constituents with FeNO. The comparison was also made with parallel analyses using ambient concentrations. Personal exposures to PM 2.5 (28.1 ± 23.3 μg/m 3 ) were higher than the ambient levels (13.3 ± 6.4 μg/m 3 ) monitored by stations. The composition profile and personal-to-ambient concentration ratio varied among subjects with different occupations. An interquartile range (IQR) change in personal exposure to PM 2.5 was positively associated with 12.8% increase in FeNO (95% confidence interval, CI: 5.5-20.7%), while nil association was found for ambient PM 2.5 . Among the constituents measured, only the carcinogenic PAHs were significantly associated with 12% increase in FeNO responses (95% CI, 0.0-25.6%). In conclusion, our study provides the first understanding about personal exposure to PM 2.5 and possible sources in Hong Kong. The results also showed that personal exposure to PM 2.5 and c-PAHs were linked to increased FeNO levels among healthy adults. Copyright © 2018 Elsevier Inc. All rights reserved.

  15. Elevated personal exposure to particulate matter from human activities in a residence.

    Science.gov (United States)

    Ferro, Andrea R; Kopperud, Royal J; Hildemann, Lynn M

    2004-01-01

    Continuous laser particle counters collocated with time-integrated filter samplers were used to measure personal, indoor, and outdoor particulate matter (PM) concentrations for a variety of prescribed human activities during a 5-day experimental period in a home in Redwood City, CA, USA. The mean daytime personal exposures to PM(2.5) and PM(5) during prescribed activities were 6 and 17 times, respectively, as high as the pre-activity indoor background concentration. Activities that resulted in the highest exposures of PM(2.5), PM(5), and PM(10) were those that disturbed dust reservoirs on furniture and textiles, such as dry dusting, folding clothes and blankets, and making a bed. The vigor of activity and type of flooring were also important factors for dust resuspension. Personal exposures to PM(2.5) and PM(5) were 1.4 and 1.6 times, respectively, as high as the indoor concentration as measured by a stationary monitor. The ratio of personal exposure to the indoor concentration was a function of both particle size and the distance of the human activity from the stationary indoor monitor. The results demonstrate that a wide variety of indoor human resuspension activities increase human exposure to PM and contribute to the "personal cloud" effect.

  16. Differences in Access to and Use of Electronic Personal Health Information Between Rural and Urban Residents in the United States.

    Science.gov (United States)

    Greenberg, Alexandra J; Haney, Danielle; Blake, Kelly D; Moser, Richard P; Hesse, Bradford W

    2018-02-01

    The increase in use of health information technologies (HIT) presents new opportunities for patient engagement and self-management. Patients in rural areas stand to benefit especially from increased access to health care tools and electronic communication with providers. We assessed the adoption of 4 HIT tools over time by rural or urban residency. Analyses were conducted using data from 7 iterations of the National Cancer Institute's Health Information National Trends Survey (HINTS; 2003-2014). Rural/urban residency was based on the USDA's 2003 Rural-Urban Continuum Codes. Outcomes of interest included managing personal health information online; whether providers maintain electronic health records (EHRs); e-mailing health care providers; and purchasing medicine online. Bivariate analyses and logistic regression were used to assess relationships between geography and outcomes, controlling for sociodemographic characteristics. In total, 6,043 (17.6%, weighted) of the 33,749 respondents across the 7 administrations of HINTS lived in rural areas. Rural participants were less likely to report regular access to Internet (OR = 0.70, 95% CI = 0.61-0.80). Rural respondents were neither more nor less likely to report that their health care providers maintained EHRs than were urban respondents; however, they had decreased odds of managing personal health information online (OR = 0.59, 95% CI = 0.40-0.78) and e-mailing health care providers (OR = 0.62, 95% CI = 0.49-0.77). The digital divide between rural and urban residents extends to HIT. Additional investigation is needed to determine whether the decreased use of HIT may be due to lack of Internet connectivity or awareness of these tools. © 2016 National Rural Health Association.

  17. Quantum spin Hall phases

    International Nuclear Information System (INIS)

    Murakami, Shuichi

    2009-01-01

    We review our recent theoretical works on the quantum spin Hall effect. First we compare edge states in various 2D systems, and see whether they are robust or fragile against perturbations. Through the comparisons we see the robust nature of edge states in 2D quantum spin Hall phases. We see how it is protected by the Z 2 topological number, and reveal the nature of the Z 2 topological number by studying the phase transition between the quantum spin Hall and insulator phases. We also review our theoretical proposal of the ultrathin bismuth film as a candidate to the 2D quantum spin Hall system. (author)

  18. Unmet Needs of Community-Residing Persons with Dementia and Their Informal Caregivers: Findings from the MIND at Home Study

    Science.gov (United States)

    Black, Betty S.; Johnston, Deirdre; Rabins, Peter V.; Morrison, Ann; Lyketsos, Constantine; Samus, Quincy M.

    2014-01-01

    OBJECTIVES To determine the prevalence and correlates of unmet needs in a sample of community-residing persons with dementia (PWD) and their informal caregivers. DESIGN Analysis of cross-sectional, baseline participant characteristics prior to randomization in a care coordination intervention trial. SETTING Baltimore, MD. PARTICIPANTS Community-residing PWD (n=254) and their informal caregivers (n=246). MEASUREMENTS In-home assessments of dementia-related needs based on the Johns Hopkins Dementia Care Needs Assessment. Bivariate and multivariate regression analyses were conducted to identify demographic, socioeconomic, clinical, functional and quality of life correlates of unmet needs. RESULTS The mean number of unmet needs in PWD was 7.7 (SD=4.8) and 4.6 (SD=2.3) in caregivers, with almost all PWD (99%) and caregivers (97%) having one or more unmet needs. Unmet needs in PWD were significantly greater among those with higher cognitive function. Ninety percent of PWD had unmet safety needs, over half had unmet needs for meaningful activities, and almost one-third had not received a prior evaluation or diagnosis. Higher unmet needs in PWD were associated significantly with non-white race, lower incomes, less impairment in activities of daily living and more symptoms of depression. For caregivers, more than 85% had unmet needs for resource referrals and caregiver education. Higher unmet caregiver needs were associated significantly with non-white race, less education, and more symptoms of depression. CONCLUSION Many community-residing PWD and their caregivers have unmet dementia-related needs for care, services and support. Providers should be aware that unmet needs may be higher among minority and low-income community residents, caregivers with lower education, and individuals with early-stage dementia. Identifying and treating symptoms of depression in PWD and caregivers may enable them to address their other unmet needs. PMID:24479141

  19. Quality improvements in resident mobility care: using person- and relationship-centered frameworks.

    Science.gov (United States)

    Taylor, Janice Anne; Sims, Jane; Haines, Terry P

    2014-06-01

    Research is needed to demonstrate the application of person- and relationship-centered care to nursing home practice. This article aimed to find a suitable person/relationship-centered framework to assist with mobility care practice improvements in nursing homes. The authors discuss the task of mobility care, the nature of person- and relationship-centered care, and the significance of such approaches to mobility care. The Senses Framework (Nolan, Davies, Ryan, & Keady, 2008) is employed to develop mobility care practice improvement objectives. The objectives are used to evaluate outcomes from 2 hypothetical scenarios to illustrate the possible value of the Senses Framework. The Senses Framework facilitated development of objectives for mobility care practice improvement that considers the needs of all stakeholders.

  20. Community integration of elderly mentally ill persons in psychiatric hospitals and two types of residences

    NARCIS (Netherlands)

    Depla, MFIA; de Graff, R; van Busschbach, JT; Heeren, TJ

    Objective: Deinstitutionalization policy in the Netherlands has given rise to two new living arrangements for elderly long-term psychiatric patients. Both involve accommodation in mainstream residential homes for elderly persons, either concentrated in a specialized care unit or dispersed throughout

  1. An elderly person in the attitudes of medical students and medical residents: an ethical aspect

    Directory of Open Access Journals (Sweden)

    Fakhrudinova E.R.

    2017-06-01

    Full Text Available The objective of the study: to identify the attitudes towards elderly among the students and residents of SSMU n.a. V. I. Razumovsky. Material and Methods. Students of 3d and 6th courses and interns of 1st and 2d years (N=85 enrolled in the SSMU n.a. V. I. Razumovsky were involved in the research. The average age of respondents was 21 ±1.8 years. We used the technique of unfinished sentences, which allowed us to measure emotional load of the semantic field of the phenomenon of old age. Results. Among the respondents, most commonly old age is associated with responsibilities in the upbringing of grandchildren, wisdom and pension. The main reasons that hamper the interaction with the elderly respondents emphasized the conflict of older people and a decrease in cognitive functions. Conclusions. In the researched population there is mainly a positive image of old age. Medical students should be prepared to work with older people and a tolerant attitude to old age should be formed

  2. Can personal dignity be assessed by others? A survey study comparing nursing home residents' with family members', nurses' and physicians' answers on the MIDAM-LTC.

    Science.gov (United States)

    Oosterveld-Vlug, Mariska G; Onwuteaka-Philipsen, Bregje D; Pasman, H Roeline W; van Gennip, Isis E; de Vet, Henrica C W

    2015-02-01

    Preserving dignity is an important goal of the care given in nursing homes. Although nursing home residents themselves are the preferred source of information about the factors that influence their dignity, they may not always be able to provide this. In these cases, information must be obtained from proxy informants such as family members or caregiver staff. Knowledge on comparability of proxies' and residents' answers is then important to interpret this information appropriately. To explore the extent to which responses of different types of proxies correspond with nursing home residents' responses when they both assess the resident's personal dignity. A cross-sectional survey. The general medical wards of six nursing homes in the Netherlands. Ninety-five nursing home residents, their family members, nurses and elderly care physicians. Agreement percentages were calculated between residents' and proxies' answers on the Measurement Instrument for Dignity AMsterdam-for Long Term Care facilities, an instrument consisting of 31 symptoms or experiences for which presence as well as influence on dignity were asked, and a single item score for overall personal dignity. Proxies generally rated the residents' dignity more negatively on the single item score than residents did themselves. Agreement percentages between residents and the different proxies ranged between 53% and 63% for the single item score, between 68% and 72% for the presence of items and between 68% and 76% for items' influence on dignity. Agreement on items' presence and influence on dignity was highest for physicians and lowest for family. Family members tended to overestimate the presence of items in the resident's life as well as their influence on dignity. They could however best recognize when a resident's dignity was considerably violated, whereas physicians and nurses overlooked this more often. Physicians and nurses were not always aware that certain items were present--especially of care items

  3. Comparison of Personal BTEX Exposure and Pregnancy Outcomes among Pregnant Women Residing in and Near Petrochemical Industrial Area

    Directory of Open Access Journals (Sweden)

    Nantaporn Phatrabuddha

    2013-07-01

    Full Text Available Petrochemical industrial air pollution is a major problem in many cities in Asia, including Rayong, Thailand. Some of this pollution, e.g. benzene are human carcinogen.To determine the levels of exposure to BTEX compounds and examine the pregnancy outcomes among pregnantwomen living in and near petrochemical industrial area. 110 pregnancy women were monitored, using a combination of environmental and biological sampling for BTEX exposure.Results showed that personal exposures to BTEX were significantly higher in pregnant women living in the petrochemical industrial area than those living near the petrochemical industrial area (P< 0.001. These were in agree with urinary metabolites of BTEX on Thursday afternoon, i.e. t,t-muconic acid, hippuric acid, mandelic acid and methyl-hippuric acid. The urinary metabolites of BTEX were also correlated well with personal exposure (P< 0.05. For pregnancy outcomes, there were no difference between the groups in the prevalence of low birth weight for gestational age (< 2,500 grams, and APGAR score below 7 at 1 and 5 minutes. Upon data analysis of relations between BTEX exposure level and maternal gain weight, gestation age, birth weight, and APGAR score at 1-minute and 5-minutes, no significant relationship was found. Our data indicates that pregnant women residing ina heavy industrial city such as MapTaPhut have exposed to toxic substances, i.e. BTEX in a higher level than those in more outer industrial city who are exposed to less industrial pollutions.

  4. Individualization in a Lecture Hall Setting.

    Science.gov (United States)

    Halyard, Rebecca A.

    A two-quarter Human Anatomy and Physiology course for health-science students has been developed which incorporates the principles of individualization while maintaining the lecture hall setting. The lecture method contributes the following components to the course: (1) no special equipment or supplies; (2) personal interaction between instructor…

  5. Healthy Dining Hall Eating

    Science.gov (United States)

    ... Healthy Dining Hall Eating What's in this article? Good Intentions What Does Your Body Need? Choosing Carbs Choosing Veggies (and Fruit) Choosing Protein Choosing Dairy Snack Attacks Meeting Special Dietary Needs Portion Sizes Portion ...

  6. Halls Lake 1990

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Salt marsh habitats along the shoreline of Halls Lake are threatened by wave erosion, but the reconstruction of barrier islands to reduce this erosion will modify or...

  7. Care staff training based on person-centered care and dementia care mapping, and its effects on the quality of life of nursing home residents with dementia.

    Science.gov (United States)

    Yasuda, Mami; Sakakibara, Hisataka

    2017-09-01

    To assess the effects of care staff training based on person-centered care (PCC) and dementia care mapping (DCM) on the quality of life (QOL) of residents with dementia in a nursing home. An intervention of staff training based on PCC and DCM was conducted with 40 care staff members at a geriatric nursing home. The effects of the staff training on the QOL of residents with dementia were evaluated by the DCM measurements of 40 residents with dementia three times at about one-month intervals (first, baseline; second, pre-intervention; third, post-intervention). The well-being and ill-being values (WIB values) of the residents with dementia measured by DCM were not different between the first and second rounds before the staff training (p = 0.211). Meanwhile, the WIB values increased from the first and second rounds to the third post-intervention round (p = 0.035 and p dementia.

  8. Hall effect in hopping regime

    Energy Technology Data Exchange (ETDEWEB)

    Avdonin, A., E-mail: avdonin@ifpan.edu.pl [Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa (Poland); Skupiński, P. [Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa (Poland); Grasza, K. [Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa (Poland); Institute of Electronic Materials Technology, ul. Wólczyńska 133, 01-919 Warszawa (Poland)

    2016-02-15

    A simple description of the Hall effect in the hopping regime of conductivity in semiconductors is presented. Expressions for the Hall coefficient and Hall mobility are derived by considering averaged equilibrium electron transport in a single triangle of localization sites in a magnetic field. Dependence of the Hall coefficient is analyzed in a wide range of temperature and magnetic field values. Our theoretical result is applied to our experimental data on temperature dependence of Hall effect and Hall mobility in ZnO. - Highlights: • Expressions for Hall coefficient and mobility for hopping conductivity are derived. • Theoretical result is compared with experimental curves measured on ZnO. • Simultaneous action of free and hopping conduction channels is considered. • Non-linearity of hopping Hall coefficient is predicted.

  9. Spin Hall noise

    NARCIS (Netherlands)

    Kamra, A.; Witek, F.P.; Meyer, S.; Huebl, H.; Geprägs, S.; Gross, R.; Bauer, G.E.W.; Goennenwein, S.T.B.

    2014-01-01

    We measure the low-frequency thermal fluctuations of pure spin current in a platinum film deposited on yttrium iron garnet via the inverse spin Hall effect (ISHE)-mediated voltage noise as a function of the angle ? between the magnetization and the transport direction. The results are consistent

  10. Anomalous Hall effect

    Czech Academy of Sciences Publication Activity Database

    Nagaosa, N.; Sinova, Jairo; Onoda, S.; MacDonald, A. H.; Ong, N. P.

    2010-01-01

    Roč. 82, č. 2 (2010), s. 1539-1592 ISSN 0034-6861 Institutional research plan: CEZ:AV0Z10100521 Keywords : anomalous Hall effect * spintronics Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 51.695, year: 2010

  11. Personal characteristics and participation in dance events of residents from home for the aged DOI: 10.5007/1980-0037.2010v12n4p295

    Directory of Open Access Journals (Sweden)

    Raphael Gonçalves de Oliveira

    2010-01-01

    Full Text Available A growing elderly population and an increase in the number of residents of long-stay institutions are currently observed. One of the activities that provides benefits to these individuals is dancing, but little is known about this practice in these institutions. The objective of this study was to identify factors that limit or encourage residents of these institutions to actively participate in dance events. This qualitative and exploratory study involved a group of 30 residents of a longstay institution (mean age: 72.6 ± 9.6 years and a group of 30 visitors (mean age: 68.1 ± 10.2 years, who had participated in dance events for at least one year. The personal history related to dancing was obtained by semistructured interviews. The results showed that most responders began dancing at a young age influenced by their families, attending country dances. However, changes have occurred over the years and these events have been greatly reduced at the institution. Less commitment to participate in activities and greater physical debilitation were observed in the group of residents of the long-stay institution. These subjects also reported that they make few friends during the event, receive little praise, and are most of the time only watching others dancing. It was concluded that it would be necessary to offer activities that permit more active participation, contributing to the development of the personal characteristics of the subjects, in order to promote this practice which, in turn, could produce health benefits.

  12. Lifestyle medicine course for family medicine residents: preliminary assessment of the impact on knowledge, attitudes, self-efficacy and personal health.

    Science.gov (United States)

    Malatskey, Lilach; Bar Zeev, Yael; Tzuk-Onn, Adva; Polak, Rani

    2017-09-01

    The WHO estimates that by 2020 two-thirds of the diseases worldwide will be the result of unhealthy lifestyle habits. Less than half of primary care physician graduates feel prepared to give lifestyle behaviour counselling. Our objective was to evaluate the impact of lifestyle medicine (LM) course on self-reported knowledge, attitudes, self-efficacy and health behaviour of family medicine residents. Based on the Israeli syllabus for the study of LM, we delivered five face to face 20 H courses. Pre/post data were collected by knowledge, attitudes, self-efficacy and personal health survey: RESULTS: A total of 112 family medicine residents participated in one of the five courses, of which 91 (81.3%) filled both pre and post surveys. Participates showed an improvement in self-reported knowledge and capacity to manage patients in regard to smoking, weight management and physical activity. An improvement was noted in personal health behaviour of overweight participant's in regard to self-reported physical activity. A comprehensive LM syllabus based course has a positive impact on family medicine residents LM counselling abilities. We suggest that LM course should be considered as a potential permanent addition to the family medicine residency programme. 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/.

  13. The dialectical movement between deprivation and preservation of a person's life space: A question of nursing home residents' dignity

    DEFF Research Database (Denmark)

    Sæteren, Berit; Tolo Heggestad, Anne Kari; Høy, B.

    2016-01-01

    The aim of this study was to answer the question "What do nursing home residents do themselves in order to maintain their dignity?" Twenty-eight residents, 8 men and 20 women, aged 62 to 103 years, from 6 different nursing homes in Scandinavia were interviewed. The results showed that the residen...... tried to expand their life space, both physical and ontological, in order to experience health and dignity....

  14. Magnetometria por efeito Hall

    OpenAIRE

    Fernández Pinto, Janeth

    2010-01-01

    Construímos um magnetômetro utilizando dois sensores Hall de GaAs (Toshiba- THS118) operando em um modo diferencial. Cada sensor tem um circuito préamplificador associado a ele e a diferencia de voltagem entre eles é amplificada com um ganho variável de 30 - 7000. Os sensores Hall têm dimensões típicas de 1,5 x 1,7 x 0,6 mm3 e foram montados separados um do outro de 0,71 mm, em uma configuração espacial planar. O magnetômetro foi testado usando tanto correntes dc (Idc) quant...

  15. Paired Hall states

    International Nuclear Information System (INIS)

    Greiter, M.

    1992-01-01

    This dissertation contains a collection of individual articles on various topics. Their significance in the corresponding field as well as connections between them are emphasized in a general and comprehensive introduction. In the first article, the author explores the consequences for macroscopic effective Lagrangians of assuming that the momentum density is proportional to the flow of conserved current. The universal corrections obtained for the macroscopic Lagrangian of a superconductor describe the London Hall effect, and provide a fully consistent derivation of it. In the second article, a heuristic principle is proposed for quantized Hall states: the existence and incompressibility of fractionally quantized Hall states is explained by an argument based on an adiabatic localization of magnetic flux, the process of trading uniform flux for an equal amount of fictitious flux attached to the particles. This principle is exactly implemented in the third article. For a certain class of model Hamiltonians, the author obtains Laughlin's Jastrow type wave functions explicitly from a filled Landau level, by smooth extrapolation in quantum statistics. The generalization of this analysis to the torus geometry shows that theorems restricting the possibilities of quantum statistics on closed surfaces are circumvented in the presence of a magnetic field. In the last article, the existence is proposed of a novel incompressible quantum liquid, a paired Hall state, at a half filled Landau level. This state arises adiabatically from free fermions in zero magnetic field, and reduces to a state previously proposed by Halperin in the limit of tightly bound pairs. It supports unusual excitations, including neutral fermions and charge e/4 anyons with statistical parameter θ = π/8

  16. Planar Hall Effect MRAM

    OpenAIRE

    Bason, Y.; Klein, L.; Yau, J. -B.; Hong, X.; Hoffman, J.; Ahn, C. H.

    2005-01-01

    We suggest a new type of magnetic random access memory (MRAM) that is based on the phenomenon of the planar Hall effect (PHE) in magnetic films, and we demonstrate this idea with manganite films. The PHE-MRAM is structurally simpler than currently developed MRAM that is based on magnetoresistance tunnel junctions (MTJ), with the tunnel junction structure being replaced by a single layer film.

  17. Spin Hall effect devices

    Czech Academy of Sciences Publication Activity Database

    Jungwirth, Tomáš; Wunderlich, Joerg; Olejník, Kamil

    2012-01-01

    Roč. 11, č. 5 (2012), s. 382-390 ISSN 1476-1122 EU Projects: European Commission(XE) 268066 - 0MSPIN; European Commission(XE) 215368 - SemiSpinNet Grant - others:AV ČR(CZ) AP0801 Program:Akademická prémie - Praemium Academiae Institutional research plan: CEZ:AV0Z10100521 Keywords : spin Hall effect * spintronics * spin transistor Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 35.749, year: 2012

  18. Spin Hall effect

    Czech Academy of Sciences Publication Activity Database

    Sinova, Jairo; Valenzuela, O.V.; Wunderlich, Joerg; Back, C.H.; Jungwirth, Tomáš

    2015-01-01

    Roč. 87, č. 4 (2015), s. 1213-1259 ISSN 0034-6861 R&D Projects: GA MŠk(CZ) LM2011026; GA ČR GB14-37427G EU Projects: European Commission(XE) 268066 - 0MSPIN Institutional support: RVO:68378271 Keywords : spin Hall effect * spintronics Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 33.177, year: 2015

  19. Quantum critical Hall exponents

    CERN Document Server

    Lütken, C A

    2014-01-01

    We investigate a finite size "double scaling" hypothesis using data from an experiment on a quantum Hall system with short range disorder [1-3]. For Hall bars of width w at temperature T the scaling form is w(-mu)T(-kappa), where the critical exponent mu approximate to 0.23 we extract from the data is comparable to the multi-fractal exponent alpha(0) - 2 obtained from the Chalker-Coddington (CC) model [4]. We also use the data to find the approximate location (in the resistivity plane) of seven quantum critical points, all of which closely agree with the predictions derived long ago from the modular symmetry of a toroidal sigma-model with m matter fields [5]. The value nu(8) = 2.60513 ... of the localisation exponent obtained from the m = 8 model is in excellent agreement with the best available numerical value nu(num) = 2.607 +/- 0.004 derived from the CC-model [6]. Existing experimental data appear to favour the m = 9 model, suggesting that the quantum Hall system is not in the same universality class as th...

  20. Video-Based Learning vs Traditional Lecture for Instructing Emergency Medicine Residents in Disaster Medicine Principles of Mass Triage, Decontamination, and Personal Protective Equipment.

    Science.gov (United States)

    Curtis, Henry A; Trang, Karen; Chason, Kevin W; Biddinger, Paul D

    2018-02-01

    Introduction Great demands have been placed on disaster medicine educators. There is a need to develop innovative methods to educate Emergency Physicians in the ever-expanding body of disaster medicine knowledge. The authors sought to demonstrate that video-based learning (VBL) could be a promising alternative to traditional learning methods for teaching disaster medicine core competencies. Hypothesis/Problem The objective was to compare VBL to traditional lecture (TL) for instructing Emergency Medicine residents in the American College of Emergency Physicians (ACEP; Irving, Texas USA) disaster medicine core competencies of patient triage and decontamination. A randomized, controlled pilot study compared two methods of instruction for mass triage, decontamination, and personal protective equipment (PPE). Emergency Medicine resident learning was measured with a knowledge quiz, a Likert scale measuring comfort, and a practical exercise. An independent samples t-test compared the scoring of the VBL with the TL group. Twenty-six residents were randomized to VBL (n=13) or TL (n=13). Knowledge score improvement following video (14.9%) versus lecture (14.1%) did not differ significantly between the groups (P=.74). Comfort score improvement also did not differ (P=.64) between video (18.3%) and lecture groups (15.8%). In the practical skills assessment, the VBL group outperformed the TL group overall (70.4% vs 55.5%; PMedicine residents in the ACEP disaster medicine core competencies of patient triage and decontamination. Curtis HA , Trang K , Chason KW , Biddinger PD . Video-based learning vs traditional lecture for instructing emergency medicine residents in disaster medicine principles of mass triage, decontamination, and personal protective equipment. Prehosp Disaster Med. 2018;33(1):7-12.

  1. Initial substantial reduction in air dose rates of Cs origin and personal doses for residents owing to the Fukushima nuclear accident

    International Nuclear Information System (INIS)

    Yoshida, Hiroko; Saito, Junko; Hirasawa, Noriyasu; Kobayashi, Ikuo

    2013-01-01

    The initial substantial reduction in the air dose rate and personal dose equivalent [Hp(10)] for residents were compared between the Marumori and Kosugo regions for the period from September 2011 to September 2012 after the occurrence of the Fukushima nuclear accident. Marumori is a rural settlement, and Kosugo is a suburban city along a freeway. A similar tendency was observed in the Hp(10) results for Marumori residents and in the air dose rates for both regions: values dropped during the heavy snow season and a faster reduction in the air dose rate than the radioactive decay of 134 Cs and 137 Cs was observed after the snow had thawed. These reductions are considered to be caused by the weathering and/or migration of radionuclides down the soil column. However, neither a drop due to an accumulation of snow nor faster reduction was observed in Hp(10) for Kosugo residents. This discrepancy between the air dose rate and Hp(10) for Marumori and Kosugo residents might be caused by differences in their living environment. (author)

  2. Quantum hall effect. A perspective

    International Nuclear Information System (INIS)

    Aoki, Hideo

    2006-01-01

    Novel concepts and phenomena are emerging recently in the physics of quantum Hall effect. This article gives an overview, which starts from the fractional quantum Hall system viewed as an extremely strongly correlated system, and move on to present various phenomena involving internal degrees of freedom (spin and layer), non-equilibrium and optical properties, and finally the spinoff to anomalous Hall effect and the rotating Bose-Einstein condensate. (author)

  3. Magnesium Hall Thruster

    Science.gov (United States)

    Szabo, James J.

    2015-01-01

    This Phase II project is developing a magnesium (Mg) Hall effect thruster system that would open the door for in situ resource utilization (ISRU)-based solar system exploration. Magnesium is light and easy to ionize. For a Mars- Earth transfer, the propellant mass savings with respect to a xenon Hall effect thruster (HET) system are enormous. Magnesium also can be combusted in a rocket with carbon dioxide (CO2) or water (H2O), enabling a multimode propulsion system with propellant sharing and ISRU. In the near term, CO2 and H2O would be collected in situ on Mars or the moon. In the far term, Mg itself would be collected from Martian and lunar regolith. In Phase I, an integrated, medium-power (1- to 3-kW) Mg HET system was developed and tested. Controlled, steady operation at constant voltage and power was demonstrated. Preliminary measurements indicate a specific impulse (Isp) greater than 4,000 s was achieved at a discharge potential of 400 V. The feasibility of delivering fluidized Mg powder to a medium- or high-power thruster also was demonstrated. Phase II of the project evaluated the performance of an integrated, highpower Mg Hall thruster system in a relevant space environment. Researchers improved the medium power thruster system and characterized it in detail. Researchers also designed and built a high-power (8- to 20-kW) Mg HET. A fluidized powder feed system supporting the high-power thruster was built and delivered to Busek Company, Inc.

  4. Spin Hall effect transistor

    Czech Academy of Sciences Publication Activity Database

    Wunderlich, Joerg; Park, B.G.; Irvine, A.C.; Zarbo, Liviu; Rozkotová, E.; Němec, P.; Novák, Vít; Sinova, Jairo; Jungwirth, Tomáš

    2010-01-01

    Roč. 330, č. 6012 (2010), s. 1801-1804 ISSN 0036-8075 R&D Projects: GA AV ČR KAN400100652; GA MŠk LC510 EU Projects: European Commission(XE) 215368 - SemiSpinNet Grant - others:AV ČR(CZ) AP0801 Program:Akademická prémie - Praemium Academiae Institutional research plan: CEZ:AV0Z10100521 Keywords : spin Hall effect * spintronics * spin transistor Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 31.364, year: 2010

  5. Methodical approach to reconstruct individual internal doses for persons residing in areas of Belarus contaminated as a result of the Chernobyl accident

    International Nuclear Information System (INIS)

    Skryabin, Anatoly; Belsky, Yuri

    2008-01-01

    Full text: The studies on the risk to population of low-level exposure following the Chernobyl accident require the estimation of the individual doses. The most difficult aspect is the estimation of internal exposure (IAED int ). Level of individual internal exposure due to ingestion of long-lived caesium isotopes defines by individual 'food habits' (IFH) of the person. Non-standard methodical approach is suggested to evaluate internal doses taking into IFH: 1) IFH are generally conservative by food characteristic and steady in time; 2) IFH of the person determines his dose which can be calculated using data of personal interview and the special table of conformity establishing connection between IFH and corresponding percentile interval in a variation line of doses in given settlement; 3) IAED int (1986-2005) is calculated as the sum of annual doses of the individual for all period of exposure and in all settlements of residing. To develop the model, WBC measurements data (around 1.5 millions) collected in 1987-2005 for population of around 1000 Belarusian settlements were used. The input data for IAEA int calculation include consumption of dose-significant products, duration, and place of residence obtained by mean of individual questionnaire; WBC measurements data; table of conformity (IFH → IAED int ). (author)

  6. Stuart Hall and Cultural Studies, circa 1983

    Directory of Open Access Journals (Sweden)

    Ann Curthoys

    2017-11-01

    Full Text Available Stuart Hall sought to internationalise theoretical debates and to create Cultural Studies as interdisciplinary. We chart his theoretical journey through a detailed examination of a series of lectures delivered in 1983 and now published for the first time. In these lectures, he discusses theorists such as E.P. Thompson, Raymond Williams, Louis Althusser, Levi Strauss and Antonio Gramsci, and explores the relationship between ideas and social structure, the specificities of class and race, and the legacies of slavery. We note his turn towards metaphors of divergence and dispersal and highlight how autobiographical and deeply personal Hall is in these lectures, especially in his ego histoire moment of traumatic memory recovery.

  7. The ISOLDE hall

    CERN Multimedia

    Maximilien Brice

    2002-01-01

    Since 1992, after its move from the 600 MeV SC, ISOLDE is a customer of the Booster (then 1 GeV, now 1.4 GeV). The intense Booster beam (some 3E13 protons per pulse) is directed onto a target, from which a mixture of isotopes emanates. After ionization and electrostatic acceleration to 60 keV, they enter one of the 2 spectrometers (General Purpose Separator: GPS, and High Resolution Separator: HRS) from which the selected ions are directed to the experiments. The photos show: the REX-ISOLDE post accelerator; the mini-ball experiment; an overview of the ISOLDE hall. In the picture (_12) of the hall, the separators are behind the wall. From either of them, beams can be directed into any of the many beamlines towards the experiments, some of which are visible in the foreground. The elevated cubicle at the left is EBIS (Electron Beam Ion Source), which acts as a charge-state multiplier for the REX facility. The ions are further mass analzyzed and passed on to the linac which accelerates them to higher energies. T...

  8. Managing Malnutrition in Older Persons Residing in Care Homes: Nutritional and Clinical Outcomes Following a Screening and Intervention Program.

    Science.gov (United States)

    Mountford, Christopher G; Okonkwo, Arthur C O; Hart, Kathryn; Thompson, Nick P

    2016-01-01

    This study aimed to establish prevalence of malnutrition in older adult care home residents and investigate whether a nutritional screening and intervention program could improve nutritional and clinical outcomes. A community-based cohort study was conducted in five Newcastle care homes. 205 participants entered; 175 were followed up. Residents already taking oral nutritional supplements (ONS) were excluded from interventions. Those with Malnutrition Universal Screening Tool (MUST) score of 1 received dietetic advice and ≥2 received dietetic advice and were prescribed ONS (220 ml, 1.5 kcal/ml) twice daily for 12 weeks. Body mass index (BMI), MUST, mini nutritional assessment score (MNA)®, mid upper arm muscle circumference (MAMC), and Geriatric Depression Scale (GDS) were recorded at baseline and 12 weeks. Malnutrition prevalence was 36.6% ± 6.6 (95% CI). A higher MUST was associated with greater mortality (p = 0.004). Type of intervention received was significantly associated with change in MUST score (p interventions. Dietitian advice may slow the progression of nutritional decline. In this study oral nutritional supplements over a 3-month period did not significantly improve nutritional status in malnourished care home residents.

  9. Validation of the Verbal and Social Interaction questionnaire: carers' focus in the carer-resident relationship in supported housing facilities for persons with psychiatric disabilities (VSI-SH).

    Science.gov (United States)

    Brunt, D; Rask, M

    2013-04-01

    A questionnaire to measure the verbal and social interactions between carers and residents in supported housing facilities for persons with psychiatric disabilities has been developed. It is an adaptation of a questionnaire originally used in a forensic psychiatric setting. The aim of the present study was thus to investigate the construct validity and the reliability of this new version of the Verbal and Social Interactions questionnaire for use in supported housing facilities (VSI-SH). Two hundred and twenty-three carers from municipal and privately run housing facilities completed the questionnaire. A factor analysis was performed, which resulted in six factors. The number of items was reduced from the original 47 to 30 in order to minimize factorial complexity and multiple loadings. The reliability was tested with Cronbach's alpha and good internal consistency for the questionnaire and five of the six factors was found. The resulting six factors and the items were compared to the conceptual model and four of the six factors corresponded well with the categories in this original theoretical model. The questionnaire can be a useful contribution to the study of interactions between carers and residents in supported housing facilities for persons with psychiatric disabilities. © 2012 Blackwell Publishing.

  10. Farm Hall: The Play

    Science.gov (United States)

    Cassidy, David C.

    2013-03-01

    It's July 1945. Germany is in defeat and the atomic bombs are on their way to Japan. Under the direction of Samuel Goudsmit, the Allies are holding some of the top German nuclear scientists-among them Heisenberg, Hahn, and Gerlach-captive in Farm Hall, an English country manor near Cambridge, England. As secret microphones record their conversations, the scientists are unaware of why they are being held or for how long. Thinking themselves far ahead of the Allies, how will they react to the news of the atomic bombs? How will these famous scientists explain to themselves and to the world their failure to achieve even a chain reaction? How will they come to terms with the horror of the Third Reich, their work for such a regime, and their behavior during that period? This one-act play is based upon the transcripts of their conversations as well as the author's historical work on the subject.

  11. Drug Use among Residents of Juvenile Correctional Center in Kerman, Iran, and its Relationship with Personality Dimensions and Self-concept.

    Science.gov (United States)

    Gousheh, Amin; Ziaaddini, Hassan; Baneshi, Mohammad Reza; Nakhaee, Nouzar

    2014-01-01

    Identifying the status of substance misuse and its psychosocial correlates among residents of juvenile correctional centers, as a high risk group, could potentially illuminate the roadmap to prevention of drug use in this group. In this cross-sectional study, 93 individuals aged 13 to 18 were enrolled. A self-administered questionnaire was completed and dropped in a sealed box. It consisted of 4 parts of Piers-Harris Children's Self-Concept Scale, NEO Personality Inventory, drug use questions, and demographic variables. All questionnaires were well adapted in the Persian language. MANOVA was used to compare the subscale scores between the drug users and nonusers. All respondents were male and 40% were illiterate. More than 40% had drug dependent fathers. Use of cigarette, opium, and alcohol in the previous 30 days was reported by 31.9, 52.2, and 15.9% of respondents, respectively. In this population, the score of 3 of the 5 personality factors (i.e., neuroticism, extraversion, and openness) were higher than in the general population (P self-concept. Both the scores of personality and self-concept showed no significant difference based on the status of drug use. Prevalence of lifetime and last-month drug use was found to be high. Regarding the profiles of personality and self-concept, more comprehensive evidence-based interventions are needed for improvement of their mental health.

  12. How personality traits affect clinician-supervisors' work engagement and subsequently their teaching performance in residency training

    NARCIS (Netherlands)

    Scheepers, Renée A.; Arah, Onyebuchi A.; Heineman, Maas Jan; Lombarts, Kiki M. J. M. H.

    2016-01-01

    Clinician-supervisors often work simultaneously as doctors and teachers. Supervisors who are more engaged for their teacher work are evaluated as better supervisors. Work engagement is affected by the work environment, yet the role of supervisors' personality traits is unclear. This study examined

  13. Hall Effect Gyrators and Circulators

    Science.gov (United States)

    Viola, Giovanni; DiVincenzo, David P.

    2014-04-01

    The electronic circulator and its close relative the gyrator are invaluable tools for noise management and signal routing in the current generation of low-temperature microwave systems for the implementation of new quantum technologies. The current implementation of these devices using the Faraday effect is satisfactory but requires a bulky structure whose physical dimension is close to the microwave wavelength employed. The Hall effect is an alternative nonreciprocal effect that can also be used to produce desired device functionality. We review earlier efforts to use an Ohmically contacted four-terminal Hall bar, explaining why this approach leads to unacceptably high device loss. We find that capacitive coupling to such a Hall conductor has much greater promise for achieving good circulator and gyrator functionality. We formulate a classical Ohm-Hall analysis for calculating the properties of such a device, and show how this classical theory simplifies remarkably in the limiting case of the Hall angle approaching 90°. In this limit, we find that either a four-terminal or a three-terminal capacitive device can give excellent circulator behavior, with device dimensions far smaller than the ac wavelength. An experiment is proposed to achieve GHz-band gyration in millimeter (and smaller) scale structures employing either semiconductor heterostructure or graphene Hall conductors. An inductively coupled scheme for realizing a Hall gyrator is also analyzed.

  14. Hall Effect Gyrators and Circulators

    Directory of Open Access Journals (Sweden)

    Giovanni Viola

    2014-05-01

    Full Text Available The electronic circulator and its close relative the gyrator are invaluable tools for noise management and signal routing in the current generation of low-temperature microwave systems for the implementation of new quantum technologies. The current implementation of these devices using the Faraday effect is satisfactory but requires a bulky structure whose physical dimension is close to the microwave wavelength employed. The Hall effect is an alternative nonreciprocal effect that can also be used to produce desired device functionality. We review earlier efforts to use an Ohmically contacted four-terminal Hall bar, explaining why this approach leads to unacceptably high device loss. We find that capacitive coupling to such a Hall conductor has much greater promise for achieving good circulator and gyrator functionality. We formulate a classical Ohm-Hall analysis for calculating the properties of such a device, and show how this classical theory simplifies remarkably in the limiting case of the Hall angle approaching 90°. In this limit, we find that either a four-terminal or a three-terminal capacitive device can give excellent circulator behavior, with device dimensions far smaller than the ac wavelength. An experiment is proposed to achieve GHz-band gyration in millimeter (and smaller scale structures employing either semiconductor heterostructure or graphene Hall conductors. An inductively coupled scheme for realizing a Hall gyrator is also analyzed.

  15. Associations between education and personal income with body mass index among Australian women residing in disadvantaged neighborhoods.

    Science.gov (United States)

    Williams, Lauren K; Andrianopoulos, Nick; Cleland, Verity; Crawford, David; Ball, Kylie

    2013-01-01

    The aims of the current study were to (1) determine the association between personal income and body mass index (BMI) and between individual education and BMI, and (2) examine the association between education and BMI across strata of personal income among women. The design of the study was a quantitative analysis of data from self-report questionnaires. The study setting was socioeconomically disadvantaged neighborhoods in Victoria, Australia. The study included 4065 nonpregnant women (ages 18-45 years) living in socioeconomically disadvantaged areas. The study used a self-report questionnaire measuring sociodemographic characteristics known to be associated with BMI. Multiple linear regressions with imputation were used to assess the association between education level, personal income, and BMI, while controlling for covariates. Mean (SD) observed BMI was 26.0 (6.1) kg/m2. Compared with women with low education, women with medium (b = -0.81; 95% confidence interval, -1.30 to -0.27; p = .004) and high (b = -1.71; 95% confidence interval, -2.34 to -1.09; p education had statistically significantly lower BMI values. No differences in BMI were observed between income categories. Stratified analyses suggested that the education-BMI association may be stronger in low-income than higher-income women. Our data show that among women living in socioeconomically disadvantaged areas, high education level rather than personal income may be protective against overweight/obesity. High personal income, however, may buffer the effects of low education on BMI. Obesity prevention efforts should target women with amplified disadvantage.

  16. Topological Hall and spin Hall effects in disordered skyrmionic textures

    KAUST Repository

    Ndiaye, Papa Birame

    2017-02-24

    We carry out a thorough study of the topological Hall and topological spin Hall effects in disordered skyrmionic systems: the dimensionless (spin) Hall angles are evaluated across the energy-band structure in the multiprobe Landauer-Büttiker formalism and their link to the effective magnetic field emerging from the real-space topology of the spin texture is highlighted. We discuss these results for an optimal skyrmion size and for various sizes of the sample and find that the adiabatic approximation still holds for large skyrmions as well as for nanoskyrmions. Finally, we test the robustness of the topological signals against disorder strength and show that the topological Hall effect is highly sensitive to momentum scattering.

  17. City and Town Halls; townHalls13

    Data.gov (United States)

    University of Rhode Island Geospatial Extension Program — Locations of city and town halls in Rhode Island. Derived using information originally compiled by the State of Rhode Island (http://www.ri.gov), and built upon...

  18. Anomalous Hall effect

    Science.gov (United States)

    Nagaosa, Naoto; Sinova, Jairo; Onoda, Shigeki; MacDonald, A. H.; Ong, N. P.

    2010-04-01

    The anomalous Hall effect (AHE) occurs in solids with broken time-reversal symmetry, typically in a ferromagnetic phase, as a consequence of spin-orbit coupling. Experimental and theoretical studies of the AHE are reviewed, focusing on recent developments that have provided a more complete framework for understanding this subtle phenomenon and have, in many instances, replaced controversy by clarity. Synergy between experimental and theoretical works, both playing a crucial role, has been at the heart of these advances. On the theoretical front, the adoption of the Berry-phase concepts has established a link between the AHE and the topological nature of the Hall currents. On the experimental front, new experimental studies of the AHE in transition metals, transition-metal oxides, spinels, pyrochlores, and metallic dilute magnetic semiconductors have established systematic trends. These two developments, in concert with first-principles electronic structure calculations, strongly favor the dominance of an intrinsic Berry-phase-related AHE mechanism in metallic ferromagnets with moderate conductivity. The intrinsic AHE can be expressed in terms of the Berry-phase curvatures and it is therefore an intrinsic quantum-mechanical property of a perfect crystal. An extrinsic mechanism, skew scattering from disorder, tends to dominate the AHE in highly conductive ferromagnets. The full modern semiclassical treatment of the AHE is reviewed which incorporates an anomalous contribution to wave-packet group velocity due to momentum-space Berry curvatures and correctly combines the roles of intrinsic and extrinsic (skew-scattering and side-jump) scattering-related mechanisms. In addition, more rigorous quantum-mechanical treatments based on the Kubo and Keldysh formalisms are reviewed, taking into account multiband effects, and demonstrate the equivalence of all three linear response theories in the metallic regime. Building on results from recent experiment and theory, a

  19. Lawful Permanent Residents - Annual Report

    Data.gov (United States)

    Department of Homeland Security — A lawful permanent resident (LPR) or 'green card' recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  20. Darrell Hall Covos-Day Books, Weltevreden Park, South Africa ...

    African Journals Online (AJOL)

    personally of the 14th and 66th Batteries and the six naval guns; Long's place was with Buller, from where he could have exercised overall control of the artillery. That way he could have dealt effectively with the ammunition problem. According to Hall, Buller apparently did not know the difference between withdrawing the ...

  1. Gauge invariance and fractional quantized Hall effect

    International Nuclear Information System (INIS)

    Tao, R.; Wu, Y.S.

    1984-01-01

    It is shown that gauge invariance arguments imply the possibility of fractional quantized Hall effect; the Hall conductance is accurately quantized to a rational value. The ground state of a system showing the fractional quantized Hall effect must be degenerate; the non-degenerate ground state can only produce the integral quantized Hall effect. 12 references

  2. Structural Analysis of the Resident Assistant Cultural Diversity Questionnaire

    Science.gov (United States)

    Johnson, Vanessa D.; Kang, Young-Shin; Thompson, George F.

    2011-01-01

    This study investigated the five-factor structure of the Resident Assistant Cultural Diversity (RACD) instrument, which assesses resident assistant (RA) confidence in addressing issues of cultural diversity in college and university residence halls. The instrument has five components that explore RA confidence: (1) belief in the need for cultural…

  3. A game generalizing Hall's theorem

    OpenAIRE

    Rabern, Landon

    2012-01-01

    We characterize the initial positions from which the first player has a winning strategy in a certain two-player game. This provides a generalization of Hall's theorem. Vizing's edge coloring theorem follows from a special case.

  4. Shared Magnetics Hall Thruster Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In the proposed Phase II program, Busek Co. will demonstrate an innovative methodology for clustering Hall thrusters into a high performance, very high power...

  5. Shared Magnetics Hall Thruster Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In the proposed Phase I program, Busek Co. will demonstrate an innovative methodology for clustering Hall thrusters into a high performance, very high power...

  6. "Hall mees" Linnateatris / Triin Sinissaar

    Index Scriptorium Estoniae

    Sinissaar, Triin

    1999-01-01

    Tallinn Linnateatri ja Raadioteatri ühislavastus "Hall mees" Gill Adamsi näidendi järgi, lavastaja Eero Spriit, osades Helene Vannari ja Väino Laes, kunstnik Kustav - Agu Püüman. Esietendus 22. okt

  7. Sheldon-Hall syndrome

    Directory of Open Access Journals (Sweden)

    Bamshad Michael J

    2009-03-01

    Full Text Available Abstract Sheldon-Hall syndrome (SHS is a rare multiple congenital contracture syndrome characterized by contractures of the distal joints of the limbs, triangular face, downslanting palpebral fissures, small mouth, and high arched palate. Epidemiological data for the prevalence of SHS are not available, but less than 100 cases have been reported in the literature. Other common clinical features of SHS include prominent nasolabial folds, high arched palate, attached earlobes, mild cervical webbing, short stature, severe camptodactyly, ulnar deviation, and vertical talus and/or talipes equinovarus. Typically, the contractures are most severe at birth and non-progressive. SHS is inherited in an autosomal dominant pattern but about half the cases are sporadic. Mutations in either MYH3, TNNI2, or TNNT3 have been found in about 50% of cases. These genes encode proteins of the contractile apparatus of fast twitch skeletal muscle fibers. The diagnosis of SHS is based on clinical criteria. Mutation analysis is useful to distinguish SHS from arthrogryposis syndromes with similar features (e.g. distal arthrogryposis 1 and Freeman-Sheldon syndrome. Prenatal diagnosis by ultrasonography is feasible at 18–24 weeks of gestation. If the family history is positive and the mutation is known in the family, prenatal molecular genetic diagnosis is possible. There is no specific therapy for SHS. However, patients benefit from early intervention with occupational and physical therapy, serial casting, and/or surgery. Life expectancy and cognitive abilities are normal.

  8. Experimental Studies of Anode Sheath Phenomena in a Hall Thruster Discharge

    International Nuclear Information System (INIS)

    Dorf, L.; Raitses, Y.; Fisch, N.J.

    2004-01-01

    Both electron-repelling and electron-attracting anode sheaths in a Hall thruster were characterized by measuring the plasma potential with biased and emissive probes [L. Dorf, Y. Raitses, V. Semenov, and N.J. Fisch, Appl. Phys. Let. 84 (2004) 1070]. In the present work, two-dimensional structures of the plasma potential, electron temperature, and plasma density in the near-anode region of a Hall thruster with clean and dielectrically coated anodes are identified. Possible mechanisms of anode sheath formation in a Hall thruster are analyzed. The path for current closure to the anode appears to be the determining factor in the anode sheath formation process. The main conclusion of this work is that the anode sheath formation in Hall thrusters differs essentially from that in the other gas discharge devices, like a glow discharge or a hollow anode, because the Hall thruster utilizes long electron residence times to ionize rather than high neutral pressures

  9. Theory of spin Hall effect

    OpenAIRE

    Chudnovsky, Eugene M.

    2007-01-01

    An extension of Drude model is proposed that accounts for spin and spin-orbit interaction of charge carriers. Spin currents appear due to combined action of the external electric field, crystal field and scattering of charge carriers. The expression for spin Hall conductivity is derived for metals and semiconductors that is independent of the scattering mechanism. In cubic metals, spin Hall conductivity $\\sigma_s$ and charge conductivity $\\sigma_c$ are related through $\\sigma_s = [2 \\pi \\hbar...

  10. [Burnout in nursing residents].

    Science.gov (United States)

    Franco, Gianfábio Pimentel; de Barros, Alba Lúcia Bottura Leite; Nogueira-Martins, Luiz Antônio; Zeitoun, Sandra Salloum

    2011-03-01

    Nursing residents may experience physical and emotional exhaustion from the daily life of attending the Program. The aim of this study was to determine the Burnout incidence among Nursing Residents. An investigative, descriptive, analytical, longitudinal-prospective study was conducted with 16 Residents over two years. The Maslach Burnout Inventory was used, translated and validated for Brazil, as well as a sociodemographic/occupational data tool. Of all residents, 17.2% showed high rates in Emotional Exhaustion and Depersonalization; 18.8% showed impaired commitment in Personal Accomplishment, 75% of which belonged to specialty areas, such as Emergency Nursing, Adult and Pediatric Intensive Care. Age and specialty area were positively correlated with Personal Accomplishment. One of the Residents was identified with changes in three subscales of the Maslach Burnout Inventory, thus characterized as a Burnout Syndrome patient. Nursing Residents have profiles of disease. Knowing these factors can minimize health risks of these workers.

  11. Different types of out-of-home activities and well-being amongst urban residing old persons with mobility impediments

    DEFF Research Database (Denmark)

    Siren, Anu; Hjorthol, Randi; Levin, Lena

    2015-01-01

    , a complex one. The present study explicates this by focusing on how utilitarian and discretionary activities—representing different types out-of-home activities—contribute to well-being, using data from individual interviews with persons aged 80–95, living in Copenhagen, Denmark. We structured the material...... by the two activity types and found both to contribute to participants׳ well-being by representing different sides of ‘being’. Utilitarian activities were important in maintaining independence and fulfilling basic needs, while discretionary activities were important for the individual existing in relation...

  12. An analysis of factors that influence personal exposure to toluene and xylene in residents of Athens, Greece

    Directory of Open Access Journals (Sweden)

    Linos Athena

    2006-02-01

    Full Text Available Abstract Background Personal exposure to pollutants is influenced by various outdoor and indoor sources. The aim of this study was to evaluate the exposure of Athens citizens to toluene and xylene, excluding exposure from active smoking. Methods Passive air samplers were used to monitor volunteers, their homes and various urban sites for one year, resulting in 2400 measurements of toluene and xylene levels. Since both indoor and outdoor pollution contribute significantly to human exposure, volunteers were chosen from occupational groups who spend a lot of time in the streets (traffic policemen, bus drivers and postmen, and from groups who spend more time indoors (teachers and students. Data on individual and house characteristics were obtained using a questionnaire completed at the beginning of the study; a time-location-activity diary was also completed daily by the volunteers in each of the six monitoring campaigns. Results Average personal toluene exposure varied over the six monitoring campaigns from 53 to 80 μg/m3. Urban and indoor concentrations ranged from 47 – 84 μg/m3 and 30 – 51 μg/m3, respectively. Average personal xylene exposure varied between 56 and 85 μg/m3 while urban and indoor concentrations ranged from 53 – 88 μg/m3 and 27 – 48 μg/m3, respectively. Urban pollution, indoor residential concentrations and personal exposures exhibited the same pattern of variation during the measurement periods. This variation among monitoring campaigns might largely be explained by differences in climate parameters, namely wind speed, humidity and amount of sunlight. Conclusion In Athens, Greece, the time spent outdoors in the city center during work or leisure makes a major contribution to exposure to toluene and xylene among non-smoking citizens. Indoor pollution and means of transportation contribute significantly to individual exposure levels. Other indoor residential characteristics such as recent painting and mode of heating

  13. Transport Signatures of the Hall Viscosity.

    Science.gov (United States)

    Delacrétaz, Luca V; Gromov, Andrey

    2017-12-01

    Hall viscosity is a nondissipative response function describing momentum transport in two-dimensional systems with broken parity. It is quantized in the quantum Hall regime, and contains information about the topological order of the quantum Hall state. Hall viscosity can distinguish different quantum Hall states with identical Hall conductances, but different topological order. To date, an experimentally accessible signature of Hall viscosity is lacking. We exploit the fact that Hall viscosity contributes to charge transport at finite wavelengths, and can therefore be extracted from nonlocal resistance measurements in inhomogeneous charge flows. We explain how to determine the Hall viscosity from such a transport experiment. In particular, we show that the profile of the electrochemical potential close to contacts where current is injected is sensitive to the value of the Hall viscosity.

  14. Not your grandfather's concert hall

    Science.gov (United States)

    Cooper, Russell; Malenka, Richard; Griffith, Charles; Friedlander, Steven

    2004-05-01

    The opening of Judy and Arthur Zankel Hall on 12 September 2003, restores Andrew Carnegie's original 1891 concept of having three outstanding auditoriums of different sizes under one roof, and creates a 21st-century venue for music performance and education. With concerts ranging from early music to avant-garde multimedia productions, from jazz to world music, and from solo recitals to chamber music, Zankel Hall expands the breadth and depth of Carnegie Hall's offerings. It allows for the integration of programming across three halls with minifestivals tailored both to the size and strengths of each hall and to the artists and music to be performed. The new flexible space also provides Carnegie Hall with an education center equipped with advanced communications technology. This paper discusses the unique program planned for this facility and how the architects, theatre consultants, and acousticians developed a design that fulfilled the client's expectations and coordinated the construction of the facility under the floor of the main Isaac Stern Auditorium without having to cancel a single performance.

  15. Investigations of Probe Induced Perturbations in a Hall Thruster

    International Nuclear Information System (INIS)

    D. Staack; Y. Raitses; N.J. Fisch

    2002-01-01

    An electrostatic probe used to measure spatial plasma parameters in a Hall thruster generates perturbations of the plasma. These perturbations are examined by varying the probe material, penetration distance, residence time, and the nominal thruster conditions. The study leads us to recommendations for probe design and thruster operating conditions to reduce discharge perturbations, including metal shielding of the probe insulator and operation of the thruster at lower densities

  16. Real-Time Observation of Apathy in Long-Term Care Residents With Dementia: Reliability of the Person-Environment Apathy Rating Scale.

    Science.gov (United States)

    Jao, Ying-Ling; Mogle, Jacqueline; Williams, Kristine; McDermott, Caroline; Behrens, Liza

    2018-04-01

    Apathy is prevalent in individuals with dementia. Lack of responsiveness to environmental stimulation is a key characteristic of apathy. The Person-Environment Apathy Rating (PEAR) scale consists of environment and apathy subscales, which allow for examination of environmental impact on apathy. The interrater reliability of the PEAR scale was examined via real-time observation. The current study included 45 observations of 15 long-term care residents with dementia. Each participant was observed at three time points for 10 minutes each. Two raters observed the participant and surrounding environment and independently rated the participant's apathy and environmental stimulation using the PEAR scale. Weighted Kappa was 0.5 to 0.82 for the PEAR-Environment subscale and 0.5 to 0.8 for the PEAR-Apathy subscale. Overall, with the exception of three items with relatively weak reliability (0.50 to 0.56), the PEAR scale showed moderate to strong interrater reliability (0.63 to 0.82). The results support the use of the PEAR scale to measure environmental stimulation and apathy via real-time observation in long-term care residents with dementia. [Journal of Gerontological Nursing, 44(4), 23-28.]. Copyright 2018, SLACK Incorporated.

  17. "I Feel Trapped": The Tension Between Personal and Structural Factors of Social Isolation and the Desire for Social Integration Among Older Residents of a High-Crime Neighborhood.

    Science.gov (United States)

    Portacolone, Elena; Perissinotto, Carla; Yeh, Jarmin Christine; Greysen, S Ryan

    2018-01-18

    The aim of this study was to examine the factors contributing to the social isolation of older residents of a high-crime neighborhood through the in-depth examination of their lived experiences. A deeper understanding of factors contributing to social isolation can allow policymakers and health care providers to create policies and programs to alleviate the social isolation of these vulnerable and understudied individuals. Participants were recruited through the support of the Housing Authority and Police and Fire Departments of Richmond, California, a town with a high-crime rate. Fifty-nine ethnographic interviews were conducted with 20 individuals of 58-95 years of age. Transcripts and fieldnotes were analyzed with a focus on the specific factors contributing the social isolation of participants. An overarching theme of tension between personal and structural factors of social isolation and desire for social integration emerged from qualitative content analysis. A tension emerged between a longing to participate in society and the immersion in a reality so dense with obstacles that made participation in society difficult to attain. Four specific themes also emerged. Three themes demonstrated underlying factors of social isolation stemming from the personal sphere and the physical and social environment. The fourth theme illustrated participants' desire for social integration. Findings demonstrate the salience of interventions and programs to make neighborhoods safe and accessible to older residents. Findings also suggest a need to reframe the conceptual framework for social isolation to better measure and alleviate this public health problem. © The Author 2017. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  18. Iodine Hall Thruster

    Science.gov (United States)

    Szabo, James

    2015-01-01

    Iodine enables dramatic mass and cost savings for lunar and Mars cargo missions, including Earth escape and near-Earth space maneuvers. The demonstrated throttling ability of iodine is important for a singular thruster that might be called upon to propel a spacecraft from Earth to Mars or Venus. The ability to throttle efficiently is even more important for missions beyond Mars. In the Phase I project, Busek Company, Inc., tested an existing Hall thruster, the BHT-8000, on iodine propellant. The thruster was fed by a high-flow iodine feed system and supported by an existing Busek hollow cathode flowing xenon gas. The Phase I propellant feed system was evolved from a previously demonstrated laboratory feed system. Throttling of the thruster between 2 and 11 kW at 200 to 600 V was demonstrated. Testing showed that the efficiency of iodine fueled BHT-8000 is the same as with xenon, with iodine delivering a slightly higher thrust-to-power (T/P) ratio. In Phase II, a complete iodine-fueled system was developed, including the thruster, hollow cathode, and iodine propellant feed system. The nominal power of the Phase II system is 8 kW; however, it can be deeply throttled as well as clustered to much higher power levels. The technology also can be scaled to greater than 100 kW per thruster to support megawatt-class missions. The target thruster efficiency for the full-scale system is 65 percent at high specific impulse (Isp) (approximately 3,000 s) and 60 percent at high thrust (Isp approximately 2,000 s).

  19. Household air pollution and personal exposure risk of polycyclic aromatic hydrocarbons among rural residents in Shanxi, China.

    Science.gov (United States)

    Chen, Y; Shen, G; Huang, Y; Zhang, Y; Han, Y; Wang, R; Shen, H; Su, S; Lin, N; Zhu, D; Pei, L; Zheng, X; Wu, J; Wang, X; Liu, W; Wong, M; Tao, S

    2016-04-01

    Polycyclic aromatic hydrocarbons (PAHs) are a group of pollutants of widespread concerns. Gaseous and size-segregated particulate-phase PAHs were collected in indoor and outdoor air in rural households. Personal exposure was measured and compared to the ingestion exposure. The average concentrations of 28 parent PAHs and benzo(a)pyrene (BaP) were 9000 ± 8390 and 131 ± 236 ng/m(3) for kitchen, 2590 ± 2270 and 43 ± 95 ng/m(3) for living room, and 2800 ± 3890 and 1.6 ± 0.7 ng/m(3) for outdoor air, respectively. The mass percent of high molecular weight (HMW) compounds with 5-6 rings contributed 1.3% to total 28 parent PAHs. Relatively higher fractions of HMW PAHs were found in indoor air compared to outdoor air. Majorities of particle-bound PAHs were found in the finest PM0.25 , and the highest levels of fine PM0.25 -bound PAHs were in the kitchen using peat and wood as energy sources. The 24-h personal PAH exposure concentration was 2100 ± 1300 ng/m(3) . Considering energies, exposures to those using wood were the highest. The PAH inhalation exposure comprised up to about 30% in total PAH exposure through food ingestion and inhalation, and the population attributable fraction (PAF) for lung cancer in the region was 0.85%. The risks for inhaled and ingested intakes of PAHs were 1.0 × 10(-5) and 1.1 × 10(-5) , respectively. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  20. Maximizing utilization of sport halls during peak hours

    DEFF Research Database (Denmark)

    Iversen, Evald Bundgård; Forsberg, Peter

    the number of participants 7.5 persons higher pr. activity compared to club activities. This implies that clubs during peak hours could include more participants. Another possibility to increase utilization is if the management of sport facilities forced sport clubs and other organisers to adapt......BACKGROUNDDuring peak hours (4.30pm-8pm) demand for timeslots in sport halls in Denmark are high and there are few timeslots available. Further, focus on how public resources are spent most efficient is increasing (Iversen, 2013). This makes it interesting to analyse how utilization could...... be increased during peak hours. DATA AND METHODOLOGYData is collected by observation of activities during two weeks on for example whether halls are used or not; the amount of playing field used; and number of participants (Iversen, 2012). Data on 1.331 activities in 36 sport halls across 4 municipalities have...

  1. ac spin-Hall effect

    International Nuclear Information System (INIS)

    Entin-Wohlman, O.

    2005-01-01

    Full Text:The spin-Hall effect is described. The Rashba and Dresselhaus spin-orbit interactions are both shown to yield the low temperature spin-Hall effect for strongly localized electrons coupled to phonons. A frequency-dependent electric field E(ω) generates a spin-polarization current, normal to E, due to interference of hopping paths. At zero temperature the corresponding spin-Hall conductivity is real and is proportional to ω 2 . At non-zero temperatures the coupling to the phonons yields an imaginary term proportional to ω. The interference also yields persistent spin currents at thermal equilibrium, at E = 0. The contributions from the Dresselhaus and Rashba interactions to the interference oppose each other

  2. Novel concepts in Hall sensors

    Science.gov (United States)

    Mani, R. G.

    1996-03-01

    Hall effect devices are widely used as position sensors and contactless switches in applications ranging from electric motors to soft drink machines and automobiles. Such devices typically operate in an adverse environment where offset voltages originating from various physical effects limit the effective sensitivity of the sensor to the weak magnetic field (B device that automatically reduces such spurious offsets is desirable because improved 'signal to offset' would relax manufacturing tolerances and other constraints within the sensor system. Here, we examine some techniques and sensor configurations (R. G. Mani, K. von Klitzing, F. Jost, K. Marx, S. Lindenkreuz, and H. P. Trah, Appl. Phys. Lett. 67, 2223, 1995.) based on the so called 'anti Hall bar' geometry that promise the possibility of a Silicon based Hall sensor with a field equivalent offset well below 1 mT.

  3. Role Conflict and Role Ambiguity of Resident Assistants when Confronted with Alcohol Consumption of Undergraduate Students

    Science.gov (United States)

    Horvath, Mary Beth

    2011-01-01

    Resident assistants serve a vital function within the residence hall; however, the challenges they confront are different from those of other students. For example, resident assistants may deal with over-consumption or illegal consumption of alcohol on campus. Addressing this issue may cause resident assistants to experience role conflict and role…

  4. Computational Modeling of Hall Thruster Erosion

    Data.gov (United States)

    National Aeronautics and Space Administration — Hall thrusters are being developed by NASA, DOD, and industry to meet a variety of on-board space propulsion needs. Hall thrusters have been operated successfully...

  5. ATLAS Assembly Hall Open Day

    CERN Multimedia

    Patrice Loiez

    2004-01-01

    To mark the 50th Anniversary of the founding of CERN, a day of tours, displays and presentations was held in October 2004. The assembly halls for the experiments that were waiting to be installed on the LHC, such as ATLAS shown here, were transformed into display areas and cafés.

  6. The Other Hall Effect: College Board Physics

    Science.gov (United States)

    Sheppard, Keith; Gunning, Amanda M.

    2013-01-01

    Edwin Herbert Hall (1855-1938), discoverer of the Hall effect, was one of the first winners of the AAPT Oersted Medal for his contributions to the teaching of physics. While Hall's role in establishing laboratory work in high schools is widely acknowledged, his position as chair of the physics section of the Committee on College Entrance…

  7. Can ensemble condition in a hall be improved and measured?

    DEFF Research Database (Denmark)

    Gade, Anders Christian

    1988-01-01

    of the ceiling reflectors; and (c) changing the position of the orchestra on the platform. These variables were then tested in full scale experiments in the hall including subjective evaluation by the orchestra in order to verify their effects under practical conditions. New objective parameters, which showed......In collaboration with the Danish Broadcasting Corporation an extensive series of experiments has been carried out in The Danish Radio Concert Hall with the practical purpose of trying to improve the ensemble conditions on the platform for the resident symphony orchestra. First, a series...... of experiments in a 1:20 scale model indicated that among several suggested means the following would be the most effective and acceptable: (a) changing the shape of the sidewalls in the platform area in order to make them reflect sound back to the musicians more effectively; (b) lowering and redesigning...

  8. The Resident Assistant as Responder to the Seventies.

    Science.gov (United States)

    Schell, Robert E.

    The nature of a residence hall program depends more on the values and behavior of the resident assistants than on the principles and structure of the system. To develop a program consistent with the most salient aspects of student development, it is important to select appropriate personnel. Any selection process is based on two assumptions: (1)…

  9. Men's Identity Development: Issues and Implications for Residence Life

    Science.gov (United States)

    Scott, David A.; Livingston, Wade G.; Havice, Pamela A.; Cawthon, Tony W.

    2012-01-01

    Young men struggle with privilege and oppression in college and university residence halls just as they do in other educational and social contexts. While discussions and research about adolescent and adult identity development continue, little attention has focused on how a male student's identity development can impact residence life cultures on…

  10. Psychologic effects of residency.

    Science.gov (United States)

    Reuben, D B

    1983-03-01

    The intense situational and physiologic stresses that accompany postgraduate training may have serious psychosocial ramifications. Although only a small proportion of residents have overt psychiatric illness, virtually all display some psychologic impairment. Contributing factors include life-changes, stresses associated with providing patient care, loss of social support, long working hours, sleep deprivation, and underlying personality traits of residents. The manifestations of this impairment are variable and may be subtle. In response to these problems, residency programs have taken steps to provide psychosocial support. Unfortunately, most programs do not offer formal support groups or seminars to discuss difficulties that accompany residency. Further definition of the psychosocial effects of residency may prompt changes that make the training of physicians a more humane process.

  11. Do care homes deliver person-centred care? A cross-sectional survey of staff-reported abusive and positive behaviours towards residents from the MARQUE (Managing Agitation and Raising Quality of Life) English national care home survey.

    Science.gov (United States)

    Cooper, Claudia; Marston, Louise; Barber, Julie; Livingston, Deborah; Rapaport, Penny; Higgs, Paul; Livingston, Gill

    2018-01-01

    There are widespread concerns about abuse of care home residents. We report, in the largest care home survey, prevalence of staff anonymously-reported, perpetrated/witnessed abusive behaviours towards care home residents over 3 months. We also report positive care behaviours. 1544 staff in 92 English care home units completed the revised Modified Conflict Tactics Scale and Maslach Burnout Inventory. Most staff reported positive care behaviours, but specific person-centred activities were sometimes infrequent. Many care home staff were never or almost never aware of a resident being taken out of the home for their enjoyment (34%, n = 520); or an activity planned around a resident's interests (15%, n = 234). 763 (51%; 95% Confidence Interval (CI) 47% to 54%) of care home staff reported carrying out or observing potentially abusive or neglectful behaviours at least sometimes in the preceding 3 months; some abuse was reported as happening "at least sometimes" in 91/92 care homes. Neglect was most frequently reported: making a resident wait for care (n = 399, 26%), avoiding a resident with challenging behaviour (n = 391, 25%), giving residents insufficient time for food (n = 297, 19%), and taking insufficient care when moving residents (n = 169, 11%). 1.1% of staff reported physical and 5% verbal abuse. More staff reported abusive/neglectful behaviour in homes with higher staff burnout-depersonalisation scores (adjusted odds ratio 1.191, CI 1.052-1.349). Staff anonymous reports of abusive behaviour and neglect could be used to monitor care quality, as cases currently reported are probably tip of the iceberg, and be an outcome in intervention studies.

  12. Scanning vector Hall probe microscope

    Czech Academy of Sciences Publication Activity Database

    Fedor, J.; Cambel, V.; Gregušová, D.; Hanzelka, Pavel; Dérer, J.; Volko, J.

    2003-01-01

    Roč. 74, č. 12 (2003), s. 5105 - 5110 ISSN 0034-6748 Institutional research plan: CEZ:AV0Z2065902 Keywords : VHPM * Hall sensor * Helium cryostat Subject RIV: JB - Sensors, Measurment, Regulation Impact factor: 1.343, year: 2003 http://web. ebscohost .com/ehost/pdf?vid=8&hid=115&sid=a7c0555a-21f4-4932-b1c6-a308ac4dd50b%40sessionmgr2

  13. An Audit of the Egress System in Multi-Storey Annexes of Four Halls ...

    African Journals Online (AJOL)

    A principal consideration in this case is the provision of an effective egress system that could be located at appropriate places to aid people to safety. The absence of these measures in multi-storey blocks leaves occupants at greater risk. This paper presents results of a study carried out in students' Halls of Residence at the ...

  14. 38 CFR 51.70 - Resident rights.

    Science.gov (United States)

    2010-07-01

    ... FOR NURSING HOME CARE OF VETERANS IN STATE HOMES Standards § 51.70 Resident rights. The resident has a... legal representative. (5) Conveyance upon death. Upon the death of a resident with a personal fund...; (iii) Physicians of the resident's choice (to provide care in the nursing home, physicians must meet...

  15. Mentorship in orthopaedic and trauma residency training ...

    African Journals Online (AJOL)

    Background: Mentorship is important in residency training as it is necessary for personal and professional development of the resident trainees. Objectives: This study documents mentorship in orthopaedic residency training programme in Nigeria by assessing the awareness of orthopaedic residents on the role of a mentor, ...

  16. Features of the psychological States of a person residing in the area of armed conflict, in the context of the transformation of life strategies in the post-conflict period

    OpenAIRE

    Ryadinskaya E.N.

    2017-01-01

    The article is a theoretical study of the psychological characteristics of the effects of armed conflict. In this article the author considers issues of importance to modern psychology, such as mental and emotional state of people in the period of occurrence of the armed conflict, the impact of immediate residence in the area of armed conflict on the mental state of the person, the stressors that affect the mental state of a person in an armed conflict. The author focuses on the fact th...

  17. Do care homes deliver person-centred care? A cross-sectional survey of staff-reported abusive and positive behaviours towards residents from the MARQUE (Managing Agitation and Raising Quality of Life) English national care home survey

    Science.gov (United States)

    Marston, Louise; Barber, Julie; Livingston, Deborah; Rapaport, Penny; Higgs, Paul; Livingston, Gill

    2018-01-01

    Background There are widespread concerns about abuse of care home residents. We report, in the largest care home survey, prevalence of staff anonymously-reported, perpetrated/witnessed abusive behaviours towards care home residents over 3 months. We also report positive care behaviours. Methods 1544 staff in 92 English care home units completed the revised Modified Conflict Tactics Scale and Maslach Burnout Inventory. Outcomes Most staff reported positive care behaviours, but specific person-centred activities were sometimes infrequent. Many care home staff were never or almost never aware of a resident being taken out of the home for their enjoyment (34%, n = 520); or an activity planned around a resident’s interests (15%, n = 234). 763 (51%; 95% Confidence Interval (CI) 47% to 54%) of care home staff reported carrying out or observing potentially abusive or neglectful behaviours at least sometimes in the preceding 3 months; some abuse was reported as happening “at least sometimes” in 91/92 care homes. Neglect was most frequently reported: making a resident wait for care (n = 399, 26%), avoiding a resident with challenging behaviour (n = 391, 25%), giving residents insufficient time for food (n = 297, 19%), and taking insufficient care when moving residents (n = 169, 11%). 1.1% of staff reported physical and 5% verbal abuse. More staff reported abusive/neglectful behaviour in homes with higher staff burnout-depersonalisation scores (adjusted odds ratio 1.191, CI 1.052–1.349). Interpretation Staff anonymous reports of abusive behaviour and neglect could be used to monitor care quality, as cases currently reported are probably tip of the iceberg, and be an outcome in intervention studies. PMID:29561867

  18. Tunneling Anomalous and Spin Hall Effects.

    Science.gov (United States)

    Matos-Abiague, A; Fabian, J

    2015-07-31

    We predict, theoretically, the existence of the anomalous Hall effect when a tunneling current flows through a tunnel junction in which only one of the electrodes is magnetic. The interfacial spin-orbit coupling present in the barrier region induces a spin-dependent momentum filtering in the directions perpendicular to the tunneling current, resulting in a skew tunneling even in the absence of impurities. This produces an anomalous Hall conductance and spin Hall currents in the nonmagnetic electrode when a bias voltage is applied across the tunneling heterojunction. If the barrier is composed of a noncentrosymmetric material, the anomalous Hall conductance and spin Hall currents become anisotropic with respect to both the magnetization and crystallographic directions, allowing us to separate this interfacial phenomenon from the bulk anomalous and spin Hall contributions. The proposed effect should be useful for proving and quantifying the interfacial spin-orbit fields in metallic and metal-semiconductor systems.

  19. Spin Hall effect by surface roughness

    KAUST Repository

    Zhou, Lingjun

    2015-01-08

    The spin Hall and its inverse effects, driven by the spin orbit interaction, provide an interconversion mechanism between spin and charge currents. Since the spin Hall effect generates and manipulates spin current electrically, to achieve a large effect is becoming an important topic in both academia and industries. So far, materials with heavy elements carrying a strong spin orbit interaction, provide the only option. We propose here a new mechanism, using the surface roughness in ultrathin films, to enhance the spin Hall effect without heavy elements. Our analysis based on Cu and Al thin films suggests that surface roughness is capable of driving a spin Hall angle that is comparable to that in bulk Au. We also demonstrate that the spin Hall effect induced by surface roughness subscribes only to the side-jump contribution but not the skew scattering. The paradigm proposed in this paper provides the second, not if only, alternative to generate a sizable spin Hall effect.

  20. Planar Hall effect bridge magnetic field sensors

    DEFF Research Database (Denmark)

    Henriksen, A.D.; Dalslet, Bjarke Thomas; Skieller, D.H.

    2010-01-01

    Until now, the planar Hall effect has been studied in samples with cross-shaped Hall geometry. We demonstrate theoretically and experimentally that the planar Hall effect can be observed for an exchange-biased ferromagnetic material in a Wheatstone bridge topology and that the sensor signal can...... be significantly enhanced by a geometric factor. For the samples in the present study, we demonstrate an enhancement of the sensor output by a factor of about 100 compared to cross-shaped sensors. The presented construction opens a new design and application area of the planar Hall effect, which we term planar...

  1. Listening to the acoustics in concert halls

    Science.gov (United States)

    Beranek, Leo L.; Griesinger, David

    2004-05-01

    How does acoustics affect the symphonic music performed in a concert hall? The lecture begins with an illustrated discussion of the architectural features that influence the acoustics. Boston Symphony Hall, which was built in 1900 when only one facet of architectural design was known, now rates as one of the world's great halls. How this occurred will be presented. Music is composed with some acoustical environment in mind and this varies with time from the Baroque to the Romantic to the Modern musical period. Conductors vary their interpretation according to the hall they are in. Well-traveled listeners and music critics have favorite halls. The lecture then presents a list of 58 halls rank ordered according to their acoustical quality based on interviews of music critics and conductors. Modern acoustical measurements made in these halls are compared with their rankings. Music recordings will be presented that demonstrate how halls sound that have different measured acoustical parameters. Photographs of a number of recently built halls are shown as examples of how these known acoustical factors have been incorporated into architectural design.

  2. Anomalous Hall effect in polycrystalline Ni films

    KAUST Repository

    Guo, Zaibing

    2012-02-01

    We systematically studied the anomalous Hall effect in a series of polycrystalline Ni films with thickness ranging from 4 to 200 nm. It is found that both the longitudinal and anomalous Hall resistivity increased greatly as film thickness decreased. This enhancement should be related to the surface scattering. In the ultrathin films (46 nm thick), weak localization corrections to anomalous Hall conductivity were studied. The granular model, taking into account the dominated intergranular tunneling, has been employed to explain this phenomenon, which can explain the weak dependence of anomalous Hall resistivity on longitudinal resistivity as well. © 2011 Elsevier Ltd. All rights reserved.

  3. Hall-effect arc protector

    Science.gov (United States)

    Rankin, R.A.; Kotter, D.K.

    1997-05-13

    The Hall-Effect Arc Protector is used to protect sensitive electronics from high energy arcs. The apparatus detects arcs by monitoring an electrical conductor, of the instrument, for changes in the electromagnetic field surrounding the conductor which would be indicative of a possible arcing condition. When the magnitude of the monitored electromagnetic field exceeds a predetermined threshold, the potential for an instrument damaging are exists and the control system logic activates a high speed circuit breaker. The activation of the breaker shunts the energy imparted to the input signal through a dummy load to the ground. After the arc condition is terminated, the normal signal path is restored. 2 figs.

  4. Temperature Gradient in Hall Thrusters

    International Nuclear Information System (INIS)

    Staack, D.; Raitses, Y.; Fisch, N.J.

    2003-01-01

    Plasma potentials and electron temperatures were deduced from emissive and cold floating probe measurements in a 2 kW Hall thruster, operated in the discharge voltage range of 200-400 V. An almost linear dependence of the electron temperature on the plasma potential was observed in the acceleration region of the thruster both inside and outside the thruster. This result calls into question whether secondary electron emission from the ceramic channel walls plays a significant role in electron energy balance. The proportionality factor between the axial electron temperature gradient and the electric field is significantly smaller than might be expected by models employing Ohmic heating of electrons

  5. Library rooms or Library halls

    Directory of Open Access Journals (Sweden)

    Alfredo Serrai

    2013-12-01

    Full Text Available Library Halls, understood as Renaissance and Baroque architectural creations, along with the furnishings and decorations, accomplish a cognitive task and serve to transmit knowledge. The design of these spaces based on the idea that they should reflect the merits and content of the collections housed within them, in order to prepare the mind of the reader to respect and admire the volumes. In accordance with this principle, in the fifteenth century library rooms had a basilican shape, with two or three naves, like churches, reflecting thus the spiritual value of the books contained there. Next to that inspiring function, library rooms had also the task of representing the entire logical and conceptual universe of human knowledge in a figurative way, including for this purpose also the and Kunst- und Wunderkammern, namely the collections of natural, artficial objects, and works of art. The importance of library rooms and their function was understood already in the early decades of the seventeenth century, as underlined in the treatise, Musei sive Bibliothecae tam privatae quam publicae Extructio, Instructio, Cura, Usus, written by the Jesuit Claude Clément and published in 1635. Almost the entire volume is dedicated to the decoration and ornamentation of the Saloni, and the function of the library is identified exclusively with the preservation and decoration of the collection, neglecting more specifically bibliographic aspects or those connected to library science. The architectural structure of the Saloni was destined to change in relation to two factors, namely the form of books, and the sources of light. As a consequence, from the end of the sixteenth century – or perhaps even before if one considers the fragments of the Library of Urbino belonging to Federico da Montefeltro – shelves and cabinets have been placed no longer in the center of the room, but were set against the walls. This new disposition of the furniture, surmounted by

  6. Resident-Assisted Montessori Programming (RAMP): use of a small group reading activity run by persons with dementia in adult day health care and long-term care settings.

    Science.gov (United States)

    Skrajner, Michael J; Camp, Cameron J

    2007-01-01

    Six persons in the early to middle stages of dementia ("leaders") were trained in Resident-Assisted Montessori Programming (RAMP) to lead a reading activity for 22 persons with more advanced dementia ("participants") in an adult day health center (ADHC) and a special care unit (SCU) in a skilled nursing facility. Researchers assessed the leaders' abilities to learn and follow the procedures of leading a group, as well as their satisfaction with their roles. In addition, participants' engagement and affect were measured, both during standard activities programming and during client-led activities. Results of this study suggest that persons with dementia can indeed successfully lead small group activities, if several important prerequisites are met. Furthermore, the engagement and affect of participants was more positive in client-led activities than in standard activities programming.

  7. Quantum Hall effect in quantum electrodynamics

    International Nuclear Information System (INIS)

    Penin, Alexander A.

    2009-01-01

    We consider the quantum Hall effect in quantum electrodynamics and find a deviation from the quantum-mechanical prediction for the Hall conductivity due to radiative antiscreening of electric charge in an external magnetic field. A weak dependence of the universal von Klitzing constant on the magnetic field strength, which can possibly be observed in a dedicated experiment, is predicted

  8. Reversal of the Hall field in indium

    International Nuclear Information System (INIS)

    Ozimek, E.J.; Leisure, R.G.; Hsu, D.K.

    1978-01-01

    The Hall effect in single crystal has been investigated at 63 kOe over the 6-280 K temperature range. The Hall coefficient reverses sign as a function of temperature. The high temperature value is less negative than theoretical predictions. (Auth.)

  9. Integral and fractional quantum Hall Ising ferromagnets

    Czech Academy of Sciences Publication Activity Database

    Výborný, Karel; Čertík, Ondřej; Pfannkuche, D.; Wodzinski, D.; Wójs, A.; Quinn, J.J.

    2007-01-01

    Roč. 75, č. 4 (2007), 045434/1-045434/10 ISSN 1098-0121 R&D Projects: GA MŠk LC510 Institutional research plan: CEZ:AV0Z10100521 Keywords : quantum Hall ferromagnet * fractional quantum Hall effect ( FQHE) * Ising ferromagnet * exact diagonalization Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 3.172, year: 2007

  10. Mesoscopic effects in the quantum Hall regime

    Indian Academy of Sciences (India)

    Home; Journals; Pramana – Journal of Physics; Volume 58; Issue 2 ... Mesoscopic effects; quantum Hall transitions; finite-size scaling. ... When band mixing between multiple Landau levels is present, mesoscopic effects cause a crossover from a sequence of quantum Hall transitions for weak disorder to classical behavior ...

  11. The Scientific Humanism of G. Stanley Hall

    Science.gov (United States)

    Meyer, Donald H.

    1971-01-01

    This paper presents the humanistic psychology of the pioneer American psychologist Granville Stanley Hall (1844-1924), examining Hall's effort to develop a system of psychology that is at once rigorously scientific and, simultaneously, capable of verifying essential human values. (Author)

  12. Novel optical probe for quantum Hall system

    Indian Academy of Sciences (India)

    to 8 T using SPV spectroscopy. Keywords. Surface photovoltage spectroscopy; quantum Hall effect; Landau levels; edge states. PACS Nos 73.43.-f; 07.60.-j; 73.43.Fj. 1. Introduction. Integer quantum Hall effect (QHE) arises from quantization of energy of two- dimensional electron gas (2DEG) under perpendicular magnetic ...

  13. Monitoring of Hall's Harbor wharf

    Science.gov (United States)

    Newhook, John P.; Bakht, Baidar; Mufti, Aftab A.; Tadros, Gamil

    2001-08-01

    The Hall's Harbour wharf in Nova Scotia is the first Canadian project to demonstrate the application of fibre reinforced polymer reinforcement, the steel-free concrete deck slab concept and fibre optic monitoring systems to structures in the marine environment. The extreme environmental exposure conditions make the site an excellent location for testing both material performance and sensing system durability. The early results of the monitoring program indicate that the innovative structure is meeting service level performance requirements. Long-term durability assessment is continuing and being complemented by controlled field and laboratory testing programs. Continuous remote monitoring of the fibre optic sensors is producing valuable reinforcement strain information for tracking structural response to ambient conditions. The fibre optic sensors themselves were found to be rugged enough to withstand the construction process and exposure environment; however, further work is required to achieve feasible field units for some types of fibre optic sensing instruments and associated equipment.

  14. Transport measurements and simulations of GaAs/AlGaAs ``anti-Hall-bar within a Hall bar'' devices

    Science.gov (United States)

    Kriisa, Annika; Mani, Ramesh G.

    2009-03-01

    Hall effect measurements are often carried out in the Hall geometry, which is a thin rectangular plate with current and Hall voltage contacts at the external boundary. The motivation of this study is to further understand the impact on Hall effect when a hole is inserted inside Hall geometry. One way on conducting this investigation is to superimpose an ``anti-Hall bar'' inside the standard Hall bar, where the anti Hall bar is actually the hole inside the Hall device with contacts on the inside boundary of this hole. This configuration is thought to generate an ordinary Hall effect within the interior boundary such that the interior Hall voltage divided by the interior injected current equals the Hall resistance. One believes that it might also be possible to simultaneously realize multiple independent Hall effects by injecting multiple currents into the multiply connected device [1]. We have studied Hall effect in the doubly connected ``anti-Hall bar within a Hall bar'' geometry fabricated out of the GaAs/AlGaAs semiconductor system. Also the simulations of the distribution of the Hall current and potential profile within the specimen are conducted. To attain understanding of how the Hall effect arises in this geometry, the simulation plots are compared to the experimental results. [1] R. G. Mani and K. von Klitzing, App. Phys. Lett. 1993, 64, 1262-1264.

  15. The quantum Hall effects: Philosophical approach

    Science.gov (United States)

    Lederer, P.

    2015-05-01

    The Quantum Hall Effects offer a rich variety of theoretical and experimental advances. They provide interesting insights on such topics as gauge invariance, strong interactions in Condensed Matter physics, emergence of new paradigms. This paper focuses on some related philosophical questions. Various brands of positivism or agnosticism are confronted with the physics of the Quantum Hall Effects. Hacking's views on Scientific Realism, Chalmers' on Non-Figurative Realism are discussed. It is argued that the difficulties with those versions of realism may be resolved within a dialectical materialist approach. The latter is argued to provide a rational approach to the phenomena, theory and ontology of the Quantum Hall Effects.

  16. Quantized Hall conductance as a topological invariant

    International Nuclear Information System (INIS)

    Niu, Q.; Thouless, Ds.J.; Wu, Y.S.

    1984-10-01

    Whenever the Fermi level lies in a gap (or mobility gap) the bulk Hall conductance can be expressed in a topologically invariant form showing the quantization explicitly. The new formulation generalizes the earlier result by TKNN to the situation where many body interaction and substrate disorder are also present. When applying to the fractional quantized Hall effect we draw the conclusion that there must be a symmetry breaking in the many body ground state. The possibility of writing the fractionally quantized Hall conductance as a topological invariant is also carefully discussed. 19 references

  17. Permanent resident

    Directory of Open Access Journals (Sweden)

    John F. Fisher

    2016-05-01

    Full Text Available The training of physicians in the past century was based primarily on responsibility and the chain-of-command. Those with the bulk of that responsibility in the fields of pediatrics and internal medicine were residents. Residents trained the medical students and supervised them carefully in caring for patients. Most attending physicians supervised their teams at arm's length, primarily serving as teachers of the finer points of diagnosis and treatment during set periods of the day or week with a perfunctory signature on write-ups or progress notes. Residents endeavored to protect the attending physician from being heavily involved unless they were unsure about a clinical problem. Before contacting the attending physician, a more senior resident would be called. Responsibility was the ultimate teacher. The introduction of diagnosis-related groups by the federal government dramatically changed the health care delivery system, placing greater emphasis on attending physician visibility in the medical record, ultimately resulting in more attending physician involvement in day-to-day care of patients in academic institutions. Without specified content in attending notes, hospital revenues would decline. Although always in charge technically, attending physicians increasingly have assumed the role once dominated by the resident. Using biographical experiences of more than 40 years, the author acknowledges and praises the educational role of responsibility in his own training and laments its declining role in today's students and house staff.

  18. Permanent resident.

    Science.gov (United States)

    Fisher, John F

    2016-01-01

    The training of physicians in the past century was based primarily on responsibility and the chain-of-command. Those with the bulk of that responsibility in the fields of pediatrics and internal medicine were residents. Residents trained the medical students and supervised them carefully in caring for patients. Most attending physicians supervised their teams at arm's length, primarily serving as teachers of the finer points of diagnosis and treatment during set periods of the day or week with a perfunctory signature on write-ups or progress notes. Residents endeavored to protect the attending physician from being heavily involved unless they were unsure about a clinical problem. Before contacting the attending physician, a more senior resident would be called. Responsibility was the ultimate teacher. The introduction of diagnosis-related groups by the federal government dramatically changed the health care delivery system, placing greater emphasis on attending physician visibility in the medical record, ultimately resulting in more attending physician involvement in day-to-day care of patients in academic institutions. Without specified content in attending notes, hospital revenues would decline. Although always in charge technically, attending physicians increasingly have assumed the role once dominated by the resident. Using biographical experiences of more than 40 years, the author acknowledges and praises the educational role of responsibility in his own training and laments its declining role in today's students and house staff.

  19. A randomized crossover trial to study the effect of personalized, one-to-one interaction using Montessori-based activities on agitation, affect, and engagement in nursing home residents with Dementia.

    Science.gov (United States)

    van der Ploeg, Eva S; Eppingstall, Barbara; Camp, Cameron J; Runci, Susannah J; Taffe, John; O'Connor, Daniel W

    2013-04-01

    Increasingly more attention has been paid to non-pharmacological interventions as treatment of agitated behaviors that accompany dementia. The aim of the current study is to test if personalized one-to-one interaction activities based on Montessori principles will improve agitation, affect, and engagement more than a relevant control condition. We conducted a randomized crossover trial in nine residential facilities in metropolitan Melbourne, Australia (n = 44). Personalized one-to-one activities that were delivered using Montessori principles were compared with a non-personalized activity to control for the non-specific benefits of one-to-one interaction. Participants were observed 30 minutes before, during, and after the sessions. The presence or absence of a selected physically non-aggressive behavior was noted in every minute, together with the predominant type of affect and engagement. Behavior counts fell considerably during both the Montessori and control sessions relative to beforehand. During Montessori activities, the amount of time spend actively engaged was double compared to during the control condition and participants displayed more positive affect and interest as well. Participants with no fluency in English (all from non-English speaking backgrounds) showed a significantly larger reduction in agitation during the Montessori than control sessions. Our results show that even non-personalized social contact can assist in settling agitated residents. Tailoring activities to residents' needs and capabilities elicit more positive interactions and are especially suitable for people who have lost fluency in the language spoken predominantly in their residential facility. Future studies could explore implementation by family members and volunteers to avoid demands on facilities' resources. Australian New Zealand Clinical Trials Registry - ACTRN12609000564257.

  20. Spin Hall effect, Hall effect and spin precession in diffusive normal metals

    OpenAIRE

    Shchelushkin, R. V.; Brataas, Arne

    2005-01-01

    We study transport in normal metals in an external magnetic field. This system exhibits an interplay between a transverse spin imbalance (spin Hall effect) caused by the spin-orbit interaction, a Hall effect via the Lorentz force, and spin precession due to the Zeeman effect. Diffusion equations for spin and charge flow are derived. The spin and charge accumulations are computed numerically in experimentally relevant thin film geometries. The out-of-plane spin Hall potential is suppressed whe...

  1. Topologically induced fractional Hall steps in the integer quantum Hall regime of MoS 2

    Science.gov (United States)

    Firoz Islam, SK; Benjamin, Colin

    2016-09-01

    The quantum magnetotransport properties of a monolayer of molybdenum disulfide are derived using linear response theory. In particular, the effect of topological terms on longitudinal and Hall conductivity is analyzed. The Hall conductivity exhibits fractional steps in the integer quantum Hall regime. Further complete spin and valley polarization of the longitudinal conductivitity is seen in presence of these topological terms. Finally, the Shubnikov-de Hass oscillations are suppressed or enhanced contingent on the sign of these topological terms.

  2. Bound values for Hall conductivity of heterogeneous medium under ...

    Indian Academy of Sciences (India)

    Bound values for Hall conductivity under quantum Hall effect (QHE) conditions in inhomogeneous medium has been studied. It is shown that bound values for Hall conductivity differ from bound values for metallic conductivity. This is due to the unusual character of current percolation under quantum Hall effect conditions.

  3. Athletics hall, Odenwald school, Heppenheim, Germany

    Energy Technology Data Exchange (ETDEWEB)

    Schuler, M. [Trans Solar GmbH, Stuttgart (Germany)

    1999-07-01

    This building, completed in 1995, is a good example of how to use a glazed foyer, not only as a climatic buffer zone, but also for preheating the inlet air by solar gains. The completely glazed west-oriented foyer is used as a huge air collector to preheat ventilation air during the heating period. The glass superstructure across the hall stores a movable curtain, serves as a skylight and enhances the natural ventilation of the hall due to the chimney effect. The stiffening ribs of the floor are also used as an air duct to the hall and as an installation duct. Photovoltaic-powered fans are used to move solar preheated air into the hall. (author)

  4. AA under construction in its hall

    CERN Multimedia

    CERN PhotoLab

    1980-01-01

    The Antiproton Accumulator was installed in a specially built hall. Here we see it at an "early" stage of installation, just a few magnets on the floor, no vacuum chamber at all, but: 3 months later there was circulating beam !

  5. Multiscale Modeling of Hall Thrusters Project

    Data.gov (United States)

    National Aeronautics and Space Administration — New multiscale modeling capability for analyzing advanced Hall thrusters is proposed. This technology offers NASA the ability to reduce development effort of new...

  6. Light Metal Propellant Hall Thruster, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek proposes to develop light metal Hall Effect thrusters that will help reduce the travel time, mass, and cost of SMD spacecraft. Busek has identified three...

  7. Mesoscopic effects in the quantum Hall regime

    Indian Academy of Sciences (India)

    The seven magnetic sub-bands are well separated by energy gaps at disorder strengthW =0.5. The Hall conductance of each of the q magnetic sub-bands, when they are separated by energy gaps, have been shown to be quantized [13]. The Hall conductance σ r (in units of e2/h), when the lowest r sub-bands are occupied, ...

  8. Hall effect in organic layered conductors

    Directory of Open Access Journals (Sweden)

    R.A.Hasan

    2006-01-01

    Full Text Available The Hall effect in organic layered conductors with a multisheeted Fermi surfaces was considered. It is shown that the experimental study of Hall effect and magnetoresistance anisotropy at different orientations of current and a quantizing magnetic field relative to the layers makes it possible to determine the contribution of various charge carriers groups to the conductivity, and to find out the character of Fermi surface anisotropy in the plane of layers.

  9. Burnout Syndrome During Residency.

    Science.gov (United States)

    Turgut, Namigar; Karacalar, Serap; Polat, Cengiz; Kıran, Özlem; Gültop, Fethi; Kalyon, Seray Türkmen; Sinoğlu, Betül; Zincirci, Mehmet; Kaya, Ender

    2016-10-01

    The aim of this study is identified the degree of Burnout Syndrome (BOS) and find out its correlation with years of recidency and sociodemograpfic chareacteristics, training, sleeping habits, such as smoking and alcohol consumption. After approval from the Hospital Ethics Committee and obtaining informed consent, First, second, third, fourth and fifth year of recidency staff (n=127) working in our hospital were involved in this study. The standardized Maslach Burnout Inventory (MBI) was used in this study. Fifty six male (44.1%) and seventy one female (55.9%) residents were enroled in this study (Coranbach Alfa(α)=0.873). 57% of the first year residents smokes cigaret and 54% of them use alcohol. 2% of them gets one day off after hospital night shift, 61% of them suffers from disturbed sleep. 60% of them had been stated that they willingly selected their profession. 61% of them prefers talking to friends and 32% of them prefers shopping to overcome stress. There were statistical difference acording to years of recidency in MBI, Emotional Burnout (EB) and desensitisation scale (DS) points. EB scale points of the second year of residency group was statisticaly higher than fourth year of residency group. DS points of second year of residency group was also statisticaly higher than the third and fourth year of residency group. There was no statistical difference between any groups in Personal Success. BOS is a frequent problem during residency in anaesthesia. Appropriate definition and awareness are the first important steps to prevent this syndrome. Further administrative approaches should be evaluated with regard to their effects.

  10. Effect of reminders of personal sacrifice and suggested rationalizations on residents' self-reported willingness to accept gifts: a randomized trial.

    Science.gov (United States)

    Sah, Sunita; Loewenstein, George

    2010-09-15

    Despite expanding research on the prevalence and consequences of conflicts of interest in medicine, little attention has been given to the psychological processes that enable physicians to rationalize the acceptance of gifts. To determine whether reminding resident physicians of the sacrifices made to obtain training, as well as suggesting this as a potential rationalization, increases self-stated willingness to accept gifts from industry. Three hundred one US resident physicians from 2 sample populations (pediatrics and family medicine) who were recruited during March-July 2009 participated in a survey presented as evaluating quality of life and values. Physicians were randomly assigned to receive 1 of 3 different online surveys. The sacrifice reminders survey (n = 120) asked questions about sacrifices made in medical training, followed by questions regarding the acceptability of receiving gifts from industry. The suggested rationalization survey (n = 121) presented the same sacrifice questions, followed by a suggested possible rationalization (based on sacrifices made in medical training) for acceptance of gifts, before the questions regarding the acceptability of gifts. The control survey (n = 60) asked about the acceptability of gifts before asking questions about sacrifices or suggesting a rationalization. Physician self-stated acceptability of receiving gifts from industry. Reminding physicians of sacrifices made in obtaining their education resulted in gifts being evaluated as more acceptable: 21.7% (13/60) in the control group vs 47.5% (57/120) in the sacrifice reminders group (odds ratio, 1.81; 95% confidence interval, 1.27-2.58; P = .001). Although most residents disagreed with the suggested rationalization, exposure to it further increased the perceived acceptability of gifts to 60.3% (73/121) in that group (odds ratio relative to sacrifice reminders group, 1.45; 95% confidence interval, 1.22-1.72; P sacrifices increased the perceived acceptability of

  11. Adding Breadth and Depth to College and University Residential Communities: A Phenomenological Study of Faculty-in-Residence

    Science.gov (United States)

    Davenport, Amy M.; Pasque, Penny A.

    2014-01-01

    Faculty-in-residence programs in residence halls are unique opportunities for student-faculty involvement, with high levels of commitment from faculty, students, staff, and institutional resources. This hermeneutic phenomenological study explores a faculty-in-residence program at a four-year public university where the FIR program has resulted in…

  12. [Professor J.Hall's merit on the development of Prague Medical Faculty].

    Science.gov (United States)

    Hlaváčková, Ludmila

    2015-01-01

    Hall was a remarkable personality among professors in Prague Medical Faculty. He was an extremely capable organizer and founder of the successful institutions that made Prague Medical Faculty famous. In 1844 he founded the University Journal, in 1845 he initiated the establishment of a laboratory for chemical and clinical examination in the general hospital, in 1847 he opened the University outpatient clinic, the first in the Austrian monarchy. He was an excellent teacher; however, his publications activity was small. Professor Hall belongs to the principal representatives of the so-called Prague Medical School.

  13. 48 CFR Appendix D to Chapter 7 - Direct USAID Contracts With a U.S. Citizen or a U.S. Resident Alien for Personal Services Abroad

    Science.gov (United States)

    2010-10-01

    .... (1) Personal services contract (PSC) means a contract that, by its express terms or as administered... occurs when, as a result of the contract's terms or the manner of its administration during performance... the services are not subject either by the contract's terms or by the manner of its administration, to...

  14. 75 FR 22770 - Gary E. Hall and Rita Hall; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2010-04-30

    ... project and concludes that exempting the project from licensing, with appropriate environmental measures.... Hall and Rita Hall; Notice of Availability of Environmental Assessment April 22, 2010. In accordance with the National Environmental Policy Act of 1969, as amended, and the Federal Energy Regulatory...

  15. Cross-sectional evaluation of the adequacy of guardianship by family members of community-residing persons with mental disorders in Changning District, Shanghai.

    Science.gov (United States)

    Zhang, Qiongting; Chen, Hao; Ju, Kang; Niu, Xin; Song, Lanjun; Chui, Jia

    2015-02-25

    The disease burden associated with chronic psychiatric illnesses is high and is projected to grow rapidly. A community-based management system for persons with mental illness was established in Shanghai in 2012 based on the Shanghai Mental Health Regulations that were developed to conform with China's new mental health law. Evaluate the guardianship services provided by family members to persons with mental illnesses living in the Changning District of Shanghai. The legal guardians of 4034 of the 4283 community-dwelling persons with psychiatric disorders living in Changning District who are registered in the Shanghai Information Management System of Mental Health were interviewed by local community health doctors and local neighborhood committee officials. The adequacy of guardianship was assessed based on standardized criteria (including the guardian's regular attendance at mental health training sessions, and their level of assistance in the treatment, daily life, and rehabilitation of the patient) and the main reasons for inadequate guardianship were recorded. The majority of guardians (3331, 83.6%) adequately fulfilled their guardianship duties. Advanced age and ill-health of the guardian was the main contributing factor in 87% of the 703 cases in which the guardianship was classified as inadequate. Other factors associated with inadequate guardianship included the patient's unstable clinical condition or failure to adhere to medication, and when the guardian did not live in the same household as the patient. The patient's diagnosis, the guardian's level of education, and the relationship between the guardian and patient were also associated with the adequacy of guardianship. The guardianship-based community services for mentally ill individuals in urban China works reasonably well. But the rapid aging of China's population may gradually decrease the ability of China's families to continue to assume this heavy burden. Alternative models of providing high

  16. Teaching residents to write a research paper.

    Science.gov (United States)

    Coleridge, S T

    1993-09-01

    Medical writing and publications are important in developing a scholarly basis for residency programs and in providing a learning experience for both resident and faculty mentors. Residency directors must provide the stimulus and support for both faculty and residents' varied creative activities. This support manifests itself in a commitment to scholarly activity (including a dedicated research person), the procurement of available research materials, the establishment of a process or plan for beginning a research project, and the development of a method for rewarding or recognizing faculty and residents who produce scholarly works. Some osteopathic residency programs may need to train faculty in research skills at the same time that residents are learning to write. Trained faculty are better models and coaches for residents engaged in research. Beginning with a fundamental, but disciplined, writing program, both faculty and residents may learn methods for sharing new knowledge or acquiring those skills necessary to critically analyze the medical literature.

  17. Air temperature gradient in large industrial hall

    Science.gov (United States)

    Karpuk, Michał; Pełech, Aleksander; Przydróżny, Edward; Walaszczyk, Juliusz; Szczęśniak, Sylwia

    2017-11-01

    In the rooms with dominant sensible heat load, volume airflow depends on many factors incl. pre-established temperature difference between exhaust and supply airflow. As the temperature difference is getting higher, airflow volume drops down, consequently, the cost of AHU is reduced. In high industrial halls with air exhaust grids located under the ceiling additional temperature gradient above working zone should be taken into consideration. In this regard, experimental research of the vertical air temperature gradient in high industrial halls were carried out for the case of mixing ventilation system The paper presents the results of air temperature distribution measurements in high technological hall (mechanically ventilated) under significant sensible heat load conditions. The supply airflow was delivered to the hall with the help of the swirl diffusers while exhaust grids were located under the hall ceiling. Basing on the air temperature distribution measurements performed on the seven pre-established levels, air temperature gradient in the area between 2.0 and 7.0 m above the floor was calculated and analysed.

  18. Extrinsic spin Hall effect in graphene

    Science.gov (United States)

    Rappoport, Tatiana

    The intrinsic spin-orbit coupling in graphene is extremely weak, making it a promising spin conductor for spintronic devices. In addition, many applications also require the generation of spin currents in graphene. Theoretical predictions and recent experimental results suggest one can engineer the spin Hall effect in graphene by greatly enhancing the spin-orbit coupling in the vicinity of an impurity. The extrinsic spin Hall effect then results from the spin-dependent skew scattering of electrons by impurities in the presence of spin-orbit interaction. This effect can be used to efficiently convert charge currents into spin-polarized currents. I will discuss recent experimental results on spin Hall effect in graphene decorated with adatoms and metallic cluster and show that a large spin Hall effect can appear due to skew scattering. While this spin-orbit coupling is small if compared with what it is found in metals, the effect is strongly enhanced in the presence of resonant scattering, giving rise to robust spin Hall angles. I will present our single impurity scattering calculations done with exact partial-wave expansions and complement the analysis with numerical results from a novel real-space implementation of the Kubo formalism for tight-binding Hamiltonians. The author acknowledges the Brazilian agencies CNPq, CAPES, FAPERJ and INCT de Nanoestruturas de Carbono for financial support.

  19. Field theory approach to quantum hall effect

    International Nuclear Information System (INIS)

    Cabo, A.; Chaichian, M.

    1990-07-01

    The Fradkin's formulation of statistical field theory is applied to the Coulomb interacting electron gas in a magnetic field. The electrons are confined to a plane in normal 3D-space and also interact with the physical 3D-electromagnetic field. The magnetic translation group (MTG) Ward identities are derived. Using them it is shown that the exact electron propagator is diagonalized in the basis of the wave functions of the free electron in a magnetic field whenever the MTG is unbroken. The general tensor structure of the polarization operator is obtained and used to show that the Chern-Simons action always describes the Hall effect properties of the system. A general proof of the Streda formula for the Hall conductivity is presented. It follows that the coefficient of the Chern-Simons terms in the long-wavelength approximation is exactly given by this relation. Such a formula, expressing the Hall conductivity as a simple derivative, in combination with diagonal form of the full propagator allows to obtain a simple expressions for the filling factor and the Hall conductivity. Indeed, these results, after assuming that the chemical potential lies in a gap of the density of states, lead to the conclusion that the Hall conductivity is given without corrections by σ xy = νe 2 /h where ν is the filling factor. In addition it follows that the filling factor is independent of the magnetic field if the chemical potential remains in the gap. (author). 21 ref, 1 fig

  20. Residency training program: Perceptions of residents

    African Journals Online (AJOL)

    Abstract. Background: There is a phobia among doctors for the residency training program, since the establishment of ... Materials and Methods: Structured questionnaires were administered to residents at 3 training institutions in Nigeria. Results: ... Keywords: Decentralization, motivation, perception, remuneration, residents.

  1. Shielding consideration for the SSCL experimental halls

    International Nuclear Information System (INIS)

    Bull, J.; Coyne, J.; Mokhov, N.; Stapleton, G.

    1994-03-01

    The Superconducting Super Collider which is being designed and built in Waxahachie, Texas consists Of series of proton accelerators, culminating in a 20 Te proton on proton collider. The collider will be in a tunnel which will be 87 km in circumference and. on average about 30 meters underground. The present design calls for two large interaction halls on the east side of the ring. The shielding for these halls is being designed for an interaction rate of 10 9 Hz or 10 16 interactions per year, based on 10 7 seconds per operational year. SSC guidelines require that the shielding be designed to meet the criterion of 1mSv per year for open areas off site 2mSv per year for open areas on site, and 2mSv per year for controlled areas. Only radiation workers will be routinely allowed to work in controlled areas. It should be pointed that there is a potential for an accidental full beam loss in either of the experimental halls, and this event would consist of the loss of the full circulating beam up to 4 x 10 14 protons. With the present design. the calculated dose equivalent for this event is about 10% of the annual dose equivalent for the normal p-p interactions, so that die accident condition does not control the shielding. If, for instance, local shielding within the experimental hall is introduced into the calculations, this could change. The shielding requirements presented here are controlled by the normal p-p interactions. Three important questions were addressed in the present calculations. They are (1) the thickness of the roof over the experimental halls, (2) the configuration of the shafts and adits which give access to the halls, and (3) the problem of ground water and air activation

  2. Enhanced Performance of Cylindrical Hall Thrusters

    International Nuclear Information System (INIS)

    Raitses, Y.; Smirnov, A.; Fisch, N.J.

    2007-01-01

    The cylindrical thruster differs significantly in its underlying physical mechanisms from the conventional annular Hall thruster. It features high ionization efficiency, quiet operation, ion acceleration in a large volume-to-surface ratio channel, and performance comparable with the state-of-the-art conventional Hall thrusters. Very significant plume narrowing, accompanied by the increase of the energetic ion fraction and improvement of ion focusing, led to 50-60% increase of the thruster anode efficiency. These improvements were achieved by overrunning the discharge current in the magnetized thruster plasma

  3. Prototype dining hall energy efficiency study

    Energy Technology Data Exchange (ETDEWEB)

    Mazzucchi, R.P.; Bailey, S.A.; Zimmerman, P.W.

    1988-06-01

    The energy consumption of food service facilities is among the highest of any commercial building type, owing to the special requirements for food preparation, sanitation, and ventilation. Consequently, the US Air Force Engineering and Services Center (AFESC) contracted with Pacific Northwest Laboratory (PNL) to collect and analyze end-use energy consumption data for a prototypical dining hall and make specific recommendations on cost-effective energy conservation options. This information will be used to establish or update criteria for dining hall designs and retrofits as appropriate. 6 refs., 21 figs., 23 tabs.

  4. An intervention targeting fundamental values among caregivers at residential facilities: effects of a cluster-randomized controlled trial on residents' self-reported empowerment, person-centered climate and life satisfaction.

    Science.gov (United States)

    Roos, Charlotte; Silén, Marit; Skytt, Bernice; Engström, Maria

    2016-07-07

    In Sweden the national fundamental values for care of older people state that care should ensure that they can live in dignity and with a sense of well-being. Our hypothesis was that a caregiver intervention targeting the national fundamental values would improve perceived empowerment, person-centered climate and life satisfaction among older people living in residential facilities. The study was a cluster-randomized controlled trial with a pre- and one post-test design, conducted in 27 units (17 study units) at 12 residential facilities for older people in five municipalities in central Sweden. The units in each municipality were randomly assigned to intervention or control group. The caregiver intervention was carried out using an interpretative approach with eight guided face-to-face seminars, where self-reflection and dialogue were used. Data were collected using questionnaires. The number of residents was 43 (78 %) in the intervention group and 37 (71 %) in the control group. The Chi-square test and Mann-Whitney U-tests were performed to detect differences between groups and Wilcoxon signed rank tests to explore differences in change over time within groups. Furthermore, generalized estimating equation (GEE) models were used to study effects of the intervention controlling for clustering effects. Primary outcome measures were empowerment, person-centered climate and life satisfaction. In the intervention group, improvements at follow-up were found in residents' self-reported empowerment (n = 42; p = 0.001, Median difference 4.0, 95 % CI 1.5;6.0), person-centered climate (n = 42; p ≤0.001, Median difference 8.0, 95 % CI 4.5;11.4) and life satisfaction regarding the factor quality of everyday activities (n = 40; p = 0.033, Median difference 9.7, 95 % CI 1.0;21.9) while disempowerment decreased (n = 43; p = 0.018, Median difference -1.3, 95 % CI -2.0;0.0). In the control group person-centered climate decreased (n = 37; p

  5. Attitudes toward the health of men that regularly occupy in a trainer hall.

    Directory of Open Access Journals (Sweden)

    Adamchhuk Ja.

    2012-02-01

    Full Text Available It is accepted to consider that by motivation for people that practice in a trainer hall is an improvement of health and original appearance. The aim of this research was to determine whether there is training by part of forming of positive attitude toward the health of men-sportsmen-amateurs that occupy in a trainer hall. In research took part 100 men that engage in the power training in one of three trainer halls of Warsaw. Investigational divided by two groups: 50 persons that occupy in a trainer hall more than one year, but no more than 3 years (group A and 50 persons that practice more than 3 (group B. It is well-proven that training positively influences on the emotional state of men. It was discovered at the same time, that than greater experience of sportsman-amateur, the considerably more often he used additions (including by a stimulant. There was no medical control in both groups. Positive influence of the power training shows that they can be the important element of prophylaxis and physiotherapy.

  6. The Refined Lecture Hall Theorem via Abacus Diagrams

    OpenAIRE

    Bradford, Laura; Harris, Meredith; Jones, Brant; Komarinski, Alex; Matson, Carly; O'Shea, Edwin

    2012-01-01

    Bousquet-M\\'elou & Eriksson's lecture hall theorem generalizes Euler's celebrated distinct-odd partition theorem. We present an elementary and transparent proof of a refined version of the lecture hall theorem using a simple bijection involving abacus diagrams.

  7. Bound values for Hall conductivity of heterogeneous medium under ...

    Indian Academy of Sciences (India)

    - ditions in inhomogeneous medium has been studied. It is shown that bound values for. Hall conductivity differ from bound values for metallic conductivity. This is due to the unusual character of current percolation under quantum Hall effect ...

  8. Features of the psychological States of a person residing in the area of armed conflict, in the context of the transformation of life strategies in the post-conflict period

    Directory of Open Access Journals (Sweden)

    Ryadinskaya E.N.

    2017-01-01

    Full Text Available The article is a theoretical study of the psychological characteristics of the effects of armed conflict. In this article the author considers issues of importance to modern psychology, such as mental and emotional state of people in the period of occurrence of the armed conflict, the impact of immediate residence in the area of armed conflict on the mental state of the person, the stressors that affect the mental state of a person in an armed conflict. The author focuses on the fact that the current socio-political situation in the regions where there was armed conflict, seriously affect the population, its relation to reality, setting goals, and vision of prospects in life. In conclusion, the article notes that the experience of life crisis in a situation of armed conflict may manifest in the loss of a sense of integrity and inner balance, the loss of the ability to control and manage their own lives. The study was supported by the grant SFU № 213.01-11/2016-2НМ (job Minobrnauki No. 28.125.2016/NM.

  9. Ion instabilities in the Hall plasma

    International Nuclear Information System (INIS)

    Gordeev, A.V.; Grechina, A.V.

    1992-01-01

    Instabilities of the Hall plasma are investigated to study the properties of plasma with small ion number per unit length, taking into account ion dynamics and electron mass finiteness. The availability of a universal mechanism resulting in a high two-stream instability with maximum increment of (ω Hi ω He ) 1/2 order is shown

  10. Pseudospin anisotropy classification of quantum Hall ferromagnets

    Czech Academy of Sciences Publication Activity Database

    Jungwirth, Tomáš; MacDonald, A. H.

    2000-01-01

    Roč. 63, č. 3 (2000), s. 035305-1 - 035305-9 ISSN 0163-1829 R&D Projects: GA ČR GA202/98/0085 Institutional research plan: CEZ:AV0Z1010914 Keywords : quantum Hall ferromagnets * anisotropy Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 3.065, year: 2000

  11. Anomalous Hall conductivity: Local orbitals approach

    Czech Academy of Sciences Publication Activity Database

    Středa, Pavel

    2010-01-01

    Roč. 82, č. 4 (2010), 045115/1-045115/9 ISSN 1098-0121 Institutional research plan: CEZ:AV0Z10100521 Keywords : anomalous Hall effect * Berry phase correction * orbital polarization momentum Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 3.772, year: 2010

  12. Intrinsic anomalous Hall effect and local polarizabilities

    Czech Academy of Sciences Publication Activity Database

    Středa, Pavel; Jonckheere, T.

    2010-01-01

    Roč. 82, č. 11 (2010), 113303/1-113303/4 ISSN 1098-0121 R&D Projects: GA ČR GA202/08/0551 Institutional research plan: CEZ:AV0Z10100521 Keywords : orbital polarization momentum * Berry phase correction * anomalous Hall effect Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 3.772, year: 2010

  13. Surprises from the spin Hall effect

    Czech Academy of Sciences Publication Activity Database

    Sinova, Jairo; Jungwirth, Tomáš

    2017-01-01

    Roč. 70, č. 7 (2017), s. 39-42 ISSN 0031-9228 Institutional support: RVO:68378271 Keywords : spintronics * spin Hall effect * magnetic recording Subject RIV: BM - Solid Matter Physics ; Magnetism OBOR OECD: Condensed matter physics (including formerly solid state physics, supercond.) Impact factor: 4.188, year: 2016

  14. Chapin Hall Projects and Publications. Autumn 1999.

    Science.gov (United States)

    Chicago Univ., IL. Chapin Hall Center for Children.

    This guide chronicles the ongoing work and writings of the Chapin Hall Center for Children at the University of Chicago, a policy research center dedicated to bringing sound information, rigorous analyses, innovative ideas, and an independent, multidisciplinary perspective to bear on policies and programs affecting children. This guide, organized…

  15. Anomalous Hall effect in disordered multiband metals

    Czech Academy of Sciences Publication Activity Database

    Kovalev, A.A.; Sinova, Jairo; Tserkovnyak, Y.

    2010-01-01

    Roč. 105, č. 3 (2010), 036601/1-036601/4 ISSN 0031-9007 Institutional research plan: CEZ:AV0Z10100521 Keywords : anomalous Hall effect * spintronics Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 7.621, year: 2010

  16. line wear debris hall effect sensor

    African Journals Online (AJOL)

    USER

    2013-07-02

    Jul 2, 2013 ... environmental monitoring/control, use of low noise electronic components and method of opposing environmental ... Keywords: Hall Effect, sensor, noise reduction, hysteresis, temperature dependent drift, stability, full scale deflection, ... must conform to available standards and the characteristics must be.

  17. Spin Hall effect on a noncommutative space

    International Nuclear Information System (INIS)

    Ma Kai; Dulat, Sayipjamal

    2011-01-01

    We study the spin-orbital interaction and the spin Hall effect of an electron moving on a noncommutative space under the influence of a vector potential A(vector sign). On a noncommutative space, we find that the commutator between the vector potential A(vector sign) and the electric potential V 1 (r(vector sign)) of the lattice induces a new term, which can be treated as an effective electric field, and the spin Hall conductivity obtains some correction. On a noncommutative space, the spin current and spin Hall conductivity have distinct values in different directions, and depend explicitly on the noncommutative parameter. Once this spin Hall conductivity in different directions can be measured experimentally with a high level of accuracy, the data can then be used to impose bounds on the value of the space noncommutativity parameter. We have also defined a new parameter, σ=ρθ (ρ is the electron concentration, θ is the noncommutativity parameter), which can be measured experimentally. Our approach is based on the Foldy-Wouthuysen transformation, which gives a general Hamiltonian of a nonrelativistic electron moving on a noncommutative space.

  18. Inertial-Hall effect: the influence of rotation on the Hall conductivity

    Directory of Open Access Journals (Sweden)

    Julio E. Brandão

    2015-01-01

    Full Text Available Inertial effects play an important role in classical mechanics but have been largely overlooked in quantum mechanics. Nevertheless, the analogy between inertial forces on mass particles and electromagnetic forces on charged particles is not new. In this paper, we consider a rotating non-interacting planar two-dimensional electron gas with a perpendicular uniform magnetic field and investigate the effects of the rotation in the Hall conductivity. The rotation introduces a shift and a split in the Landau levels. As a consequence of the break of the degeneracy, the counting of the states fully occupied below the Fermi energy increases, tuning the Hall quantization steps. The rotation also changes the quantum Hall plateau widths. Additionally, we find the Hall quantization steps as a function of rotation at a fixed value of the magnetic field.

  19. Chiral heat transport in driven quantum Hall and spin Hall edge states

    Science.gov (United States)

    Arrachea, Liliana; Fradkin, Eduardo

    2012-02-01

    We consider a model for an edge state of electronic systems in the quantum Hall regime with filling ν=1 as well as in the quantum spin Hall regime. In both cases the system is in contact with two reservoirs by tunneling at point contacts. Both systems are locally driven by applying an ac voltage in one of the contacts. By weakly coupling them to a third reservoir, the transport of the generated heat is studied in two different ways: i) when the third reservoir acts as a thermometer the local temperature is sensed, and ii) when the third reservoir acts as a voltage probe the time-dependent local voltage is sensed. Our results indicate a chiral propagation of the heat along the edge in the quantum Hall case and in the quantum spin Hall case (if the injected electrons are spin polarized). The temperature profile shows that electrons along the edge thermalize with the closest upstream reservoir.

  20. Digital technology impacts on the Arnhem transfer hall structural design

    NARCIS (Netherlands)

    Van de Straat, R.; Hofman, S.; Coenders, J.L.; Paul, J.C.

    2015-01-01

    The new Transfer Hall in Arnhem is one of the key projects to prepare the Dutch railways for the increased future demands for capacity. UNStudio developed a master plan in 1996 for the station area of which the completion of the Transfer Hall in 2015 will be a final milestone. The Transfer Hall is a

  1. Magnetoresistance in quantum Hall metals due to Pancharatnam ...

    Indian Academy of Sciences (India)

    We derive the trial Hall resistance formula for the quantum Hall metals to address both the integer and fractional quantum Hall effects. Within the degenerate (and crossed) Landau levels, and in the presence of changing magnetic field strength, one can invoke two physical processes responsible for the electron conduction ...

  2. Magnetoresistance in quantum Hall metals due to Pancharatnam ...

    Indian Academy of Sciences (India)

    Abstract. We derive the trial Hall resistance formula for the quantum Hall metals to address both the integer and fractional quantum Hall effects. Within the degenerate (and crossed) Landau levels, and in the presence of changing magnetic field strength, one can invoke two physical processes responsible for the electron ...

  3. Factors Influencing Resident Choice of Prosthodontic Residency Program.

    Science.gov (United States)

    Wojnarwsky, Pandora Keala Lee; Wang, Yan; Shah, Kumar; Koka, Sreenivas

    2017-06-01

    The decision by prosthodontic residency program directors to employ the Match process highlights the need to understand applicant priorities that influence their choice of which programs to rank highly. The purpose of this study is to determine the factors that were most important to residents when choosing from among nonmilitary based prosthodontics dental residency programs in the United States. Following completion of a pilot study, all currently enrolled prosthodontic residents at nonmilitary residency programs were invited to participate via the internet. The study consisted of a survey instrument asking residents to rank 26 possible factors that might impact an applicant's choice of residency program. In addition, the instrument collected other possible influencing variables including gender and debt load. Mean rank scores were compared to determine the most and least important factors. Kruskal-Wallis test was used to compare specific factors between the possible influencing variables. Two hundred and thirty residents completed the survey instrument, representing a 54.1% response rate of possible participants. With regard to factors influencing program choice, reputation of the residency program was the factor ranked the highest by participants, followed in descending order by the program director's personality, curriculum content, access to use of the latest digital technology, and opportunities for dental implant placement. Quality of schools for children, community outreach opportunities, and the ability to moonlight were ranked as the least important factors. Male and female residents ranked factors such as tuition/stipend, curriculum content, and community outreach opportunities significantly differently. Depending on debt load, residents ranked the factors tuition/stipend, ability to moonlight, curriculum content, and safety of the area where the program is differently. Current prosthodontic residents valued the reputation of the program as the most

  4. Radioactivity and chromosome aberrations of residents of Misasa Spa

    International Nuclear Information System (INIS)

    Morinaga, Hiroshi; Mifune, Masaaki; Furuno, Katsushi

    1985-01-01

    Misasa Spa is one of the most highly radioactive hot springs in Japan, the waters of which contain mainly 222 Rn (437 ± 132 Bq/liter). Radon contents of indoor air of private houses and health resort hotels (built of wood) at Misasa Spa range from 18.5 to 55.5 mBq/liter and 22.2 to 129.5 mBq/liter, respectively. Radon contents in the air of facilities using spring waters at Misasa Branch Hospital of Okayama University were measured to be; bathroom 807 ± 78 mBq/liter; Hubbardtank bathroom 5306 ± 2568 mBq/liter; the drinking hall 1491 ± 178 mBq/liter. The environmental and dose rate inside private house's has been measured to be 14.0 ± 1.8 μR/h. Chromosome aberrations (dicentrics) in the peripheral blood lymphocytes of residents of Misasa Spa were investigated in 14 persons; the mean value of aberration frequencies were 0.21 %. (Kubozono, M.)

  5. U.S. Legal Permanent Residents: Fiscal Year 2012

    Data.gov (United States)

    Department of Homeland Security — A legal permanent resident (LPR) or “green card” recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  6. U.S. Legal Permanent Residents: Fiscal Year 2011

    Data.gov (United States)

    Department of Homeland Security — A legal permanent resident (LPR) or “green card” recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  7. U.S. Legal Permanent Residents: Fiscal Year 2007

    Data.gov (United States)

    Department of Homeland Security — A legal permanent resident (LPR) or “green card” recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  8. U.S. Legal Permanent Residents: Fiscal Year 2009

    Data.gov (United States)

    Department of Homeland Security — A legal permanent resident (LPR) or “green card” recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  9. U.S. Lawful Permanent Residents: Fiscal Year 2013

    Data.gov (United States)

    Department of Homeland Security — A lawful permanent resident (LPR) or 'green card' recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  10. U.S. Legal Permanent Residents: Fiscal Year 2010

    Data.gov (United States)

    Department of Homeland Security — A legal permanent resident (LPR) or “green card” recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  11. U.S. Legal Permanent Residents: Fiscal Year 2008

    Data.gov (United States)

    Department of Homeland Security — A legal permanent resident (LPR) or “green card” recipient is defined by immigration law as a person who has been granted lawful permanent residence in the United...

  12. Diagnostics Systems for Permanent Hall Thrusters Development

    Science.gov (United States)

    Ferreira, Jose Leonardo; Soares Ferreira, Ivan; Santos, Jean; Miranda, Rodrigo; Possa, M. Gabriela

    This work describes the development of Permanent Magnet Hall Effect Plasma Thruster (PHALL) and its diagnostic systems at The Plasma Physics Laboratory of University of Brasilia. The project consists on the construction and characterization of plasma propulsion engines based on the Hall Effect. Electric thrusters have been employed in over 220 successful space missions. Two types stand out: the Hall-Effect Thruster (HET) and the Gridded Ion Engine (GIE). The first, which we deal with in this project, has the advantage of greater simplicity of operation, a smaller weight for the propulsion subsystem and a longer shelf life. It can operate in two configurations: magnetic layer and anode layer, the difference between the two lying in the positioning of the anode inside the plasma channel. A Hall-Effect Thruster-HET is a type of plasma thruster in which the propellant gas is ionized and accelerated by a magneto hydrodynamic effect combined with electrostatic ion acceleration. So the essential operating principle of the HET is that it uses a J x B force and an electrostatic potential to accelerate ions up to high speeds. In a HET, the attractive negative charge is provided by electrons at the open end of the Thruster instead of a grid, as in the case of the electrostatic ion thrusters. A strong radial magnetic field is used to hold the electrons in place, with the combination of the magnetic field and the electrostatic potential force generating a fast circulating electron current, the Hall current, around the axis of the Thruster, mainly composed by drifting electrons in an ion plasma background. Only a slow axial drift towards the anode occurs. The main attractive features of the Hall-Effect Thruster are its simple design and operating principles. Most of the Hall-Effect Thrusters use electromagnet coils to produce the main magnetic field responsible for plasma generation and acceleration. In this paper we present a different new concept, a Permanent Magnet Hall

  13. 42 CFR 483.10 - Resident rights.

    Science.gov (United States)

    2010-10-01

    ... to Medicaid benefits, in writing, at the time of admission to the nursing facility or, when the resident becomes eligible for Medicaid of— (A) The items and services that are included in nursing facility... eligibility for Medicaid or SSI. (6) Conveyance upon death. Upon the death of a resident with a personal fund...

  14. Marketingová stratégia hotelu Nidd Hall vo Velkej Británii

    OpenAIRE

    Kanderová, Kristína

    2012-01-01

    The aim of the bachelor's thesis is the description of the marketing strategy and characteristics of Nidd Hall hotel on the basis of personally obtained experience. The hotel is focused on clientel that consists of older people and pensioners. Its strategy is mainly based on satisfying the guest's wishes and requirements. The work is divided in three chapters. The first chapter contains theoretical determination of definitions related to marketing. The second chapter is concentrated on the ho...

  15. The ``cinquefoil" resistive/Hall measurement geometry

    Science.gov (United States)

    Koon, Daniel W.

    2000-03-01

    This talk begins by analyzing the charge transport weighting functions -- the sensitivity of resistive and Hall measurements to local macroscopic inhomogeneities -- of bridge-shaped transport specimens. As expected, such measurements sample only that region of the specimen between the central voltage electrodes, in the limit of narrow current channels connected by even narrower arms to the voltage electrodes. The bridge geometry has a few advantages over the van der Pauw cloverleaf geometry -- including ease in zeroing out the null-field Hall voltage -- but also some disadvantages. The talk concludes with an analysis of a hybrid geometry, the “cinquefoil” or five-leafed clover, which combines the best features of both.

  16. Induced radioisotopes in a linac treatment hall.

    Science.gov (United States)

    Vega-Carrillo, Héctor René; de Leon-Martinez, Héctor Asael; Rivera-Perez, Esteban; Luis Benites-Rengifo, Jorge; Gallego, Eduardo; Lorente, Alfredo

    2015-08-01

    When linacs operate above 8MV an undesirable neutron field is produced whose spectrum has three main components: the direct spectrum due to those neutrons leaking out from the linac head, the scattered spectrum due to neutrons produced in the head that collides with the nuclei in the head losing energy and the third spectrum due to room-return effect. The third category of spectrum has mainly epithermal and thermal neutrons being constant at any location in the treatment hall. These neutrons induce activation in the linac components, the concrete walls and in the patient body. Here the induced radioisotopes have been identified in concrete samples located in the hall and in one of the wedges. The identification has been carried out using a gamma-ray spectrometer. Copyright © 2015 Elsevier Ltd. All rights reserved.

  17. Theory of fractional quantum hall effect

    International Nuclear Information System (INIS)

    Kostadinov, I.Z.

    1985-08-01

    A theory of the Fractional Quantum Hall Effect is constructed based on magnetic flux fractionization, which lead to instability of the system against selfcompression. A theorem is proved stating that arbitrary potentials fail to lift a specific degeneracy of the Landau level. For the case of 1/3 fractional filling a model 3-particles interaction is constructed breaking the symmetry. The rigid 3-particles wave function plays the role of order parameter. In a BCS type of theory the gap in the single particles spectrum is produced by the 3-particles interaction. The mean field critical behaviour and critical parameters are determined as well as the Ginsburg-Landau equation coefficients. The Hall conductivity is calculated from the first principles and its temperature dependence is found. The simultaneous tunnelling of 3,5,7 etc. electrons and quantum interference effects are predicted. (author)

  18. Music hall Markneukirchen; Musikhalle in Markneukirchen

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1996-01-01

    The article presents the new building of the music hall Markneukirchen. From the planned use of the building result very high demands on the ventilation system in order to keep to a sound power level of less than 30 dB(A) in the hall. The building services are dealt with using numerous flowsheets and diagrams: Heat supply, ventilation system, sanitary system, building management, instrumentation and control, electric and lighting systems. (BWI) [Deutsch] Der vorliegende Beitrag stellt den Neubau der Musikhalle Markneukirchen vor. Durch das Nutzungskonzept ergeben sich fuer die Einhaltung eines Schalleistungspegels von weniger als 30 dB(A) im Saalbereich an die Lueftungsanlage sehr hohe Ansprueche. Es werden die raumlufttechnischen Anlagen anhand zahlreicher Flussbilder und Abbildungen vorgestellt: Waermeversorgung, Lueftungstechnik, Sanitaertechnik, Gebaeudeleit- und MSR-Technik, Elektro- und Lichttechnik. (BWI)

  19. Type of Student Residence as a Factor in College Students' Alcohol Consumption and Social Normative Perceptions regarding Alcohol Use

    Science.gov (United States)

    Page, Randy M.; O'Hegarty, Michelle

    2006-01-01

    The purpose of this study was to determine alcohol use (particularly heavy drinking) and social normative estimations of alcohol use according to student residence (fraternity, sorority, residence hall, or apartment complex). To achieve this purpose, a survey was conducted in all 34 sections of a general education core English class at a…

  20. Acoustics in rock and pop music halls

    DEFF Research Database (Denmark)

    Adelman-Larsen, Niels Werner; Thompson, Eric Robert; Gade, Anders Christian

    2007-01-01

    The existing body of literature regarding the acoustic design of concert halls has focused almost exclusively on classical music, although there are many more performances of rhythmic music, including rock and pop. Objective measurements were made of the acoustics of twenty rock music venues...... frequency sounds are typically highly amplified, they play an important role in the subjective ratings and the 63-Hz-band must be included in objective measurements and recommendations....

  1. SPS beam to the West Hall

    CERN Multimedia

    CERN PhotoLab

    1976-01-01

    One of the two target stations feeding the West Hall (see Annual Report 1976). After the proton beam was split into three branches, the outer two were directed on to targets in the cast iron shielding box, the centre one passing through the box to another target station downstream. Five different targets could be put in each beam, controlled by the mechanism seen on top.

  2. SERVIR Town Hall - Connecting Space to Village

    Science.gov (United States)

    Limaye, Ashutosh S.; Searby, Nancy D.; Irwin, Daniel; Albers, Cerese

    2013-01-01

    SERVIR, a joint NASA-USAID project, strives to improve environmental decision making through the use of Earth observations, models, and geospatial technology innovations. SERVIR connects these assets with the needs of end users in Mesoamerica, East Africa, and Hindu Kush-Himalaya regions. This Town Hall meeting will engage the AGU community by exploring examples of connecting Space to Village with SERVIR science applications.

  3. Viscoelastic-electromagnetism and Hall viscosity

    OpenAIRE

    Hidaka, Yoshimasa; Hirono, Yuji; Kimura, Taro; Minami, Yuki

    2012-01-01

    We introduce a kind of electromagnetism, which we call viscoelastic-electromagnetism, to investigate viscoelastic transport phenomena. It is shown that Cartan's formalism of general relativity is essential for viscoelastic theory, and then the corresponding electric and magnetic fields are regarded as a velocity gradient and a Burgers vector density, respectively. As an application of this formalism, the Streda formula for the Hall viscosity is obtained.

  4. Acoustics in rock and pop music halls

    DEFF Research Database (Denmark)

    Adelman-Larsen, Niels Werner; Thompson, Eric Robert; Gade, Anders Christian

    2007-01-01

    The existing body of literature regarding the acoustic design of concert halls has focused almost exclusively on classical music, although there are many more performances of rhythmic music, including rock and pop. Objective measurements were made of the acoustics of twenty rock music venues in D...... frequency sounds are typically highly amplified, they play an important role in the subjective ratings and the 63-Hz-band must be included in objective measurements and recommendations....

  5. Industrial steel hall with bridge grane

    OpenAIRE

    Jurejevčič, Nejc

    2016-01-01

    In introduction this diploma thesis describes all main characteristics of (single block)? industrial steel hall with bridge crane. Load arrangement on the supporting structure which covers general actions (snow load and wind action), self-weight and dynamic load of bridge crane was designed with moment resisting frame in transverse direction and frame with concentric diagonal bracing in longitudinual direction. Actions induced by crane bridge was considered in design of runway beam. Steel hal...

  6. Anode Fall Formation in a Hall Thruster

    International Nuclear Information System (INIS)

    Dorf, Leonid A.; Raitses, Yevgeny F.; Smirnov, Artem N.; Fisch, Nathaniel J.

    2004-01-01

    As was reported in our previous work, accurate, nondisturbing near-anode measurements of the plasma density, electron temperature, and plasma potential performed with biased and emissive probes allowed the first experimental identification of both electron-repelling (negative anode fall) and electron-attracting (positive anode fall) anode sheaths in Hall thrusters. An interesting new phenomenon revealed by the probe measurements is that the anode fall changes from positive to negative upon removal of the dielectric coating, which appears on the anode surface during the course of Hall thruster operation. As reported in the present work, energy dispersion spectroscopy analysis of the chemical composition of the anode dielectric coating indicates that the coating layer consists essentially of an oxide of the anode material (stainless steel). However, it is still unclear how oxygen gets into the thruster channel. Most importantly, possible mechanisms of anode fall formation in a Hall thruster with a clean and a coated anodes are analyzed in this work; practical implication of understanding the general structure of the electron-attracting anode sheath in the case of a coated anode is also discussed

  7. Pediatric Program Leadership's Contribution Toward Resident Wellness.

    Science.gov (United States)

    Carson, Savanna L; Perkins, Kate; Reilly, Maura R; Sim, Myung-Shin; Li, Su-Ting T

    2018-02-27

    Residency program leaders are required to support resident well-being, but often do not receive training in how to do so. Determine frequency in which program leadership provides support for resident well-being, comfort in supporting resident well-being, and factors associated with need for additional training in supporting resident well-being. National cross-sectional web-based survey of pediatric program directors, associate program directors, and coordinators in June 2015, on their experience supporting resident well-being. Univariate and bivariate descriptive statistics compared responses between groups. Generalized linear modeling, adjusting for program region, size, program leadership role, and number of years in role determined factors associated with need for additional training. 39.3% (322/820) of participants responded. Most respondents strongly agreed that supporting resident well-being is an important part of their role, but few reported supporting resident well-being as part of their job description. Most reported supporting residents' clinical, personal, and health issues at least annually, and in some cases weekly, with 72% spending >10% of their time on resident well-being. Most program leaders desired more training. After adjusting for level of comfort in dealing with resident well-being issues, program leaders more frequently exposed to resident well-being issues were more likely to desire additional training (pProgram leaders spend a significant amount of time supporting resident well-being. While they feel that supporting resident well-being is an important part of their job, opportunities exist for developing program leaders through including resident wellness on job descriptions and training program leaders how to support resident well-being. Copyright © 2018 Academic Pediatric Association. Published by Elsevier Inc. All rights reserved.

  8. Hall viscosity: A link between quantum Hall systems, plasmas and liquid crystals

    Energy Technology Data Exchange (ETDEWEB)

    Lingam, Manasvi, E-mail: manasvi@physics.utexas.edu

    2015-07-17

    In this Letter, the assumption of two simple postulates is shown to give rise to a Hall viscosity term via an action principle formulation. The rationale behind the two postulates is clearly delineated, and the connections to an intrinsic angular momentum are emphasized. By employing this methodology, it is shown that Hall viscosity appears in a wide range of fields, and the interconnectedness of quantum Hall systems, plasmas and nematic liquid crystals is hypothesized. Potential avenues for experimental and theoretical work arising from this cross-fertilization are also indicated. - Highlights: • Connections between simple 2D fluid models in different fields of physics presented. • Structure emerges via varied physical mechanisms driven by internal angular momentum. • Properties of these models such as Casimirs, equilibria and stability are analyzed.

  9. Operative Landscape at Canadian Neurosurgery Residency Programs.

    Science.gov (United States)

    Tso, Michael K; Dakson, Ayoub; Ahmed, Syed Uzair; Bigder, Mark; Elliott, Cameron; Guha, Daipayan; Iorio-Morin, Christian; Kameda-Smith, Michelle; Lavergne, Pascal; Makarenko, Serge; Taccone, Michael S; Wang, Bill; Winkler-Schwartz, Alexander; Sankar, Tejas; Christie, Sean D

    2017-07-01

    Background Currently, the literature lacks reliable data regarding operative case volumes at Canadian neurosurgery residency programs. Our objective was to provide a snapshot of the operative landscape in Canadian neurosurgical training using the trainee-led Canadian Neurosurgery Research Collaborative. Anonymized administrative operative data were gathered from each neurosurgery residency program from January 1, 2014, to December 31, 2014. Procedures were broadly classified into cranial, spine, peripheral nerve, and miscellaneous procedures. A number of prespecified subspecialty procedures were recorded. We defined the resident case index as the ratio of the total number of operations to the total number of neurosurgery residents in that program. Resident number included both Canadian medical and international medical graduates, and included residents on the neurosurgery service, off-service, or on leave for research or other personal reasons. Overall, there was an average of 1845 operative cases per neurosurgery residency program. The mean numbers of cranial, spine, peripheral nerve, and miscellaneous procedures were 725, 466, 48, and 193, respectively. The nationwide mean resident case indices for cranial, spine, peripheral nerve, and total procedures were 90, 58, 5, and 196, respectively. There was some variation in the resident case indices for specific subspecialty procedures, with some training programs not performing carotid endarterectomy or endoscopic transsphenoidal procedures. This study presents the breadth of neurosurgical training within Canadian neurosurgery residency programs. These results may help inform the implementation of neurosurgery training as the Royal College of Physicians and Surgeons residency training transitions to a competence-by-design curriculum.

  10. Personality disorders

    Science.gov (United States)

    ... personality disorder Borderline personality disorder Dependent personality disorder Histrionic personality disorder Narcissistic personality disorder Obsessive-compulsive personality disorder Paranoid ...

  11. Habitat Restoration/Enhancement Fort Hall Reservation : 2008 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Osborne, Hunter [Shoshone Bannock Tribes

    2009-07-23

    Habitat enhancement, protection and monitoring were the focus of the Resident Fisheries Program during 2008. Enhancement and protection included sloping, fencing and planting wetlands plugs at sites on Spring Creek (Head-waters). Many previously constructed instream structures (rock barbs and wing dams) were repaired throughout the Fort Hall Indian Reservation (Reservation). Physical sampling during 2008 included sediment and depth measurements (SADMS) in Spring Creek at the Car Removal site. SADMS, used to track changes in channel morphology and specifically track movements of silt through Bottoms stream systems were completed for 5 strata on Spring Creek. Water temperature and chemistry were monitored monthly on Spring Creek, Clear Creek, Diggie Creek, and Portneuf (Jimmy Drinks) and Blackfoot rivers. Fish population densities and biomass were sampled in five reservation streams which included nine sites. Sampling protocols were identical to methods used in past years. Numbers of fish in Spring Creek series remained relatively low, however, there was an increase of biomass overall since 1993. Salmonid fry densities were monitored near Broncho Bridge and were similar to 2006, and 2007, however, as in years past, high densities of macrophytes make it very difficult to see fry in addition to lack of field technicians. Mean catch rate by anglers on Bottoms streams stayed the same as 2007 at 1.5/hr. Numbers of fish larger than 18-inches caught by anglers increased from 2007 at .20 to .26/hr.

  12. Residency Allocation Database

    Data.gov (United States)

    Department of Veterans Affairs — The Residency Allocation Database is used to determine allocation of funds for residency programs offered by Veterans Affairs Medical Centers (VAMCs). Information...

  13. Commemorative Symposium on the Hall Effect and its Applications

    CERN Document Server

    Westgate, C

    1980-01-01

    In 1879, while a graduate student under Henry Rowland at the Physics Department of The Johns Hopkins University, Edwin Herbert Hall discovered what is now universally known as the Hall effect. A symposium was held at The Johns Hopkins University on November 13, 1979 to commemorate the lOOth anniversary of the discovery. Over 170 participants attended the symposium which included eleven in­ vited lectures and three speeches during the luncheon. During the past one hundred years, we have witnessed ever ex­ panding activities in the field of the Hall effect. The Hall effect is now an indispensable tool in the studies of many branches of condensed matter physics, especially in metals, semiconductors, and magnetic solids. Various components (over 200 million!) that utilize the Hall effect have been successfully incorporated into such devices as keyboards, automobile ignitions, gaussmeters, and satellites. This volume attempts to capture the important aspects of the Hall effect and its applications. It includes t...

  14. Nonlinearity in the effect of an inhomogeneous Hall angle

    Science.gov (United States)

    Koon, Daniel W.

    2007-03-01

    The differential equation for the electric potential in a conducting material with an inhomogeneous Hall angle is extended to the large-field limit. This equation is solved for a square specimen, using a successive over-relaxation [SOR] technique for matrices of up to 101x101 size, and the Hall weighting function -- the effect of local pointlike perturbations on the measured Hall angle -- is calculated as both the unperturbed Hall angle, θH, and the perturbation, δθH, exceed the linear, small angle limit. Preliminary results show that the Hall angle varies by no more than 5% if both | θH |<1 and | δθH |<1. Thus, previously calculated results for the Hall weighting function can be used for most materials in all but the most extreme magnetic fields.

  15. Assessment of personal exposure to ozone in asthmatic children residing in Mexico City Evaluación de la exposición personal a ozono en niños asmáticos de la Ciudad de México

    Directory of Open Access Journals (Sweden)

    Matiana Ramírez-Aguilar

    2008-02-01

    Full Text Available OBJECTIVE: A study was conducted to evaluate personal ozone exposure (O3p among asthmatic children residing in Mexico City. MATERIAL AND METHODS: A total of 158 chil-dren were recruited from December 1998 to April 2000. On average, three O3p measurements were obtained per child using passive badges. Time-activity patterns were recorded in a diary. Daily ambient ozone measurements (O3a were obtained from the fixed station, according to children’s residence. Levels of O3a and ozone, weighted by time spent in different micro-environments (O3w, were used as independent variables in order to model O3p concentrations using a mixed-effects model. RESULTS: Mean O3p was 7.8 ppb. The main variables in the model were: time spent indoors, distance between residence and fixed station, follow-up group, and two interaction terms (overall R²=0.50, pOBJETIVO: Realizamos este estudio para evaluar la exposición personal a ozono (O3p en niños asmáticos de la Ciudad de México. MATERIAL Y MÉTODOS: Se incluyeron 158 niños entre diciembre de 1998 y abril de 2000. En promedio se obtuvieron tres mediciones por niño, utilizando filtros pasivos para medir O3p. Se caracterizaron los patrones de actividad y las concentraciones ambientales diarias de ozono (O3a se obtuvieron de estaciones fijas cercanas a la residencia del niño. Los niveles promedio de O3a y las concentraciones ponderadas por el tiempo en diferentes microambientes (O3w fueron usados como variables independientes para modelar las concentraciones de O3p, utilizando modelos de efectos mixtos. RESULTADOS: La media de O3p fue 7.8 ppb. Las principales variables en el modelo fueron: tiempo en exteriores, distancia, periodo de seguimiento y dos términos de interacción (R²=0.50, p<0.05. CONCLUSIONES: Las concentraciones de O3w pueden usarse como "proxi" de O3p, tomando en cuenta patrones de actividad y lugar de residencia.

  16. Basic Instrumentation for Hall A at Jefferson Jab

    International Nuclear Information System (INIS)

    The Jefferson Lab Hall A Collaboration

    2003-01-01

    The instrumentation in Hall A at the JLab was designed to study electro- and photo-induced reactions at very high luminosity and good momentum and angular resolution for at least one of the reaction products. A collaboration of approximately 50 institutions from all over the world has actively contributed and participated in the design, construction and commissioning of the Hall A instrumentation. The basic Hall A equipment is described herein

  17. Precision of single-engage micro Hall effect measurements

    DEFF Research Database (Denmark)

    Henrichsen, Henrik Hartmann; Hansen, Ole; Kjær, Daniel

    2014-01-01

    Recently a novel microscale Hall effect measurement technique has been developed to extract sheet resistance (RS), Hall sheet carrier density (NHS) and Hall mobility (μH) from collinear micro 4-point probe measurements in the vicinity of an insulating boundary [1]. The technique measures in less......]. In this study we calculate the measurement error on RS, NHS and μH resulting from electrode position errors, probe placement, sample size and Hall signal magnitude. We show the relationship between measurement precision and electrode pitch, which is important when down-scaling the micro 4-point probe to fit...

  18. High Efficiency Hall Thruster Discharge Power Converter Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek leveraged previous, internally sponsored, high power, Hall thruster discharge converter development which allowed it to design, build, and test new printed...

  19. Hall Sensor Output Signal Fault-Detection & Safety Implementation Logic

    Directory of Open Access Journals (Sweden)

    Lee SangHun

    2016-01-01

    Full Text Available Recently BLDC motors have been popular in various industrial applications and electric mobility. Recently BLDC motors have been popular in various industrial applications and electric mobility. In most brushless direct current (BLDC motor drives, there are three hall sensors as a position reference. Low resolution hall effect sensor is popularly used to estimate the rotor position because of its good comprehensive performance such as low cost, high reliability and sufficient precision. Various possible faults may happen in a hall effect sensor. This paper presents a fault-tolerant operation method that allows the control of a BLDC motor with one faulty hall sensor and presents the hall sensor output fault-tolerant control strategy. The situations considered are when the output from a hall sensor stays continuously at low or high levels, or a short-time pulse appears on a hall sensor signal. For fault detection, identification of a faulty signal and generating a substitute signal, this method only needs the information from the hall sensors. There are a few research work on hall effect sensor failure of BLDC motor. The conventional fault diagnosis methods are signal analysis, model based analysis and knowledge based analysis. The proposed method is signal based analysis using a compensation signal for reconfiguration and therefore fault diagnosis can be fast. The proposed method is validated to execute the simulation using PSIM.

  20. Neutronic design of MYRRHA reactor hall shielding

    Directory of Open Access Journals (Sweden)

    Celik Yurdunaz

    2017-01-01

    Full Text Available The lateral shielding of a 600 MeV proton linear accelerator beam line in the MYRRHA reactor hall has been assessed using neutronic calculations by the MCNPX code complemented with analytical predictions. Continuous beam losses were considered to define the required shielding thickness that meets the requirements for the dose rate limits. Required shielding thicknesses were investigated from the viewpoint of accidental full beam loss as well as beam loss on collimator. The results confirm that the required shielding thicknesses are highly sensitive to the spatial shape of the beam and strongly divergent beam losses. Therefore shielding barrier should be designed according to the more conservative assumptions.

  1. Fractional quantization and the quantum hall effect

    International Nuclear Information System (INIS)

    Guerrero, J.; Calixto, M.; Aldaya, V.

    1998-01-01

    Quantization with constrains is considered in a group-theoretical framework, providing a precise characterization of the set of good operators, i.e., those preserving the constrained Hilbert space, in terms of the representation of the subgroup of constraints. This machinery is applied to the quantization of the torus as symplectic manifold, obtaining that fractional quantum numbers are permitted, provided that we allow for vector valued representations. The good operators turn out to be the Wilson loops and, for certain representations of the subgroup of constraints, the modular transformations. These results are applied to the Fractional Quantum Hall Effect, where interesting implications are derived

  2. Optically induced Hall effect in semiconductors

    Energy Technology Data Exchange (ETDEWEB)

    Idrish Miah, M; Gray, E Mac A, E-mail: m.miah@griffith.edu.a [Nanoscale Science and Technology Centre, Griffith University, Nathan, Brisbane, QLD 4111 (Australia)

    2009-03-01

    We describe an experiment which investigates the effect of a longitudinal electric field on the spin-polarized carriers generated by a circularly polarized light in semiconductors. Our experiment observes the effect as a Hall voltage resulting from nonequilibrium magnetization induced by the spin-carrier electrons accumulating at the transverse boundaries of the sample as a result of asymmetries in scattering for spin-up and spin-down electrons in the presence of spin-orbit interaction. It is found that the effect depends on the longitudinal electric field and doping density as well as on temperature. The results are presented by discussing the dominant spin relaxation mechanisms in semiconductors.

  3. Hall conductivity for two dimensional magnetic systems

    International Nuclear Information System (INIS)

    Desbois, J.; Ouvry, S.; Texier, C.

    1996-01-01

    A Kubo inspired formalism is proposed to compute the longitudinal and transverse dynamical conductivities of an electron in a plane (or a gas of electrons at zero temperature) coupled to the potential vector of an external local magnetic field, with the additional coupling of the spin degree of freedom of the electron to the local magnetic field (Pauli Hamiltonian). As an example, the homogeneous magnetic field Hall conductivity is rederived. The case of the vortex at the origin is worked out in detail. A perturbative analysis is proposed for the conductivity in the random magnetic impurity problem (Poissonian vortices in the plane). (author)

  4. Chiral heat transport in driven quantum Hall and quantum spin Hall edge states

    Science.gov (United States)

    Arrachea, Liliana; Fradkin, Eduardo

    2011-12-01

    We consider a model for an edge state of electronic systems in the quantum Hall regime with filling ν=1 and in the quantum spin Hall regime. In both cases, the system is in contact with two reservoirs by tunneling at point contacts. Both systems are locally driven by applying an ac voltage in one of the contacts. By weakly coupling them to a third reservoir, the transport of the generated heat is studied in two different ways: (i) when the third reservoir acts as a thermometer, the local temperature is sensed and (ii) when the third reservoir acts as a voltage probe, the time-dependent local voltage is sensed. Our results indicate a chiral propagation of the heat along the edge in the quantum Hall and in the quantum spin Hall cases (if the injected electrons are spin polarized). We also show that a analogous picture is obtained if instead of heating by ac driving the system is put in contact to a stationary reservoir at a higher temperature. In both cases, the temperature profile shows that the electrons along the edge thermalize with the closest “upstream” reservoir.

  5. Cylindrical Hall Thrusters with Permanent Magnets

    International Nuclear Information System (INIS)

    Raitses, Yevgeny; Merino, Enrique; Fisch, Nathaniel J.

    2010-01-01

    The use of permanent magnets instead of electromagnet coils for low power Hall thrusters can offer a significant reduction of both the total electric power consumption and the thruster mass. Two permanent magnet versions of the miniaturized cylindrical Hall thruster (CHT) of different overall dimensions were operated in the power range of 50W-300 W. The discharge and plasma plume measurements revealed that the CHT thrusters with permanent magnets and electromagnet coils operate rather differently. In particular, the angular ion current density distribution from the permanent magnet thrusters has an unusual halo shape, with a majority of high energy ions flowing at large angles with respect to the thruster centerline. Differences in the magnetic field topology outside the thruster channel and in the vicinity of the channel exit are likely responsible for the differences in the plume characteristics measured for the CHTs with electromagnets and permanent magnets. It is shown that the presence of the reversing-direction or cusp-type magnetic field configuration inside the thruster channel without a strong axial magnetic field outside the thruster channel does not lead to the halo plasma plume from the CHT.

  6. Avalanche breakdown of the quantum hall effects

    CERN Document Server

    Komiyama, S

    1999-01-01

    Heat stability of two-dimensional electron gas (2DEG) systems in the integer quantum hall effect (IQHE) regime is discussed, and a heat instability is suggested to be the intrinsic mechanism behind the breakdown of the IQHE. Phenomenological argument is provided to suggest that the 2DEG system in the IQHE state becomes thermally unstable when the Hall electric field E sub y reaches a threshold value E sub b. Above E sub b , excited nonequilibrium electrons (holes), which are initially present in the conductor as the temperature fluctuation, are accelerated by E sub y and the 2DEG thereby undergoes a transition to a warm dissipative state. The critical field, E sub b , of this abrupt transition is theoretically estimated and shown to be in fare agreement with experimentally reported values. Consideration of the dynamics of electrons suggests that the transition is a process of avalanche electron-hole pair multiplication, in which a small number of non-equilibrium carriers, gains kinetic energy within a Landau ...

  7. Planar Hall Effect in Magnetic Conducting Oxides

    Science.gov (United States)

    Akouala, Christer Rajiv

    Magnetic semiconductors are of interest for use in non-volatile memory device read heads, magnetoresistive sensors, and other spintronic devices. Research in this area has mostly focused on generating magnetic semiconductors by doping non-magnetic semiconductors with magnetic ions. This work has instead taken advantage of the defectinduced magnetism in several semiconducting oxides. The planar Hall effect (PHE) is a phenomenon that can be used for characterizing magnetic semiconductors. Along with the anisotropic magnetoresistance (AMR), PHE has the potential to provide insight into the mechanism for magnetic behavior in magnetic conducting oxide thin films that are undoped. PHE has therefore been studied in undoped ZnO, SnO2, CdO, and CuO using magnetotransport and magnetometry techniques. The measurements included both AMR and PHE taken at various temperatures from 300 to 4.2K in a Quantum Design Physical Property Measurement System (QD-PPMS) and in a custom-built magnetotransport set-up. Complementary measurements include XRD, and resistivity measurements. Resistivity vs. temperature, Hall effect, and magnetoresistance measurements were performed in the PPMS. Magnetic hysteresis and magnetization vs. temperature were acquired using a Quantum Design Magnetic Properties Measurement System (QD-MPMS).

  8. Undulator Hall Air Temperature Fault Scenarios

    International Nuclear Information System (INIS)

    Sevilla, J.

    2010-01-01

    Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about ±2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

  9. Quantum Hall samples prepared by helium-ion implantation

    International Nuclear Information System (INIS)

    Bruus, H.; Lindelof, P.E.; Veje, E.

    1990-01-01

    We have produced GaAs/GaAlAs heterostructure based quantum Hall samples with a wide range of electron mobilities using ion implantation. The purpose has been to optimize the samples for use in metrology. We have in particular studied the critical current and the non-ohmic behavior of our samples in the vicinity of a quantum Hall plateau. (orig.)

  10. Magnetoresistance in quantum Hall metals due to Pancharatnam ...

    Indian Academy of Sciences (India)

    topological insulators [10,11] and quantum Hall metals [12–21] are the other major solid- state systems that currently need proper and consistent formulations to understand their electronic properties, regardless of whether these systems have the potential for future technological marvels. Here, we shall derive the trial Hall ...

  11. Mary E. Hall: Dawn of the Professional School Librarian

    Science.gov (United States)

    Alto, Teresa

    2012-01-01

    A century ago, a woman named Mary E. Hall convinced school leaders of the need for the professional school librarian--a librarian who cultivated a love of reading, academic achievement, and independent learning skills. After graduating from New York City's Pratt Institute Library School in 1895, Hall developed her vision for the high school…

  12. Role of the Hall Effect on the Magnetorotational Instability

    Science.gov (United States)

    Bejarano, Cecilia; Gómez, Daniel

    Within the framework of magnetohydrodynamics, the Hall effect might become significant either in fully ionized low density plasmas or in cold plasmas with a low ionization fraction. We address the role of the Hall current in the development of the magnetorotational instability. The instability criterion and the instability growth rate are derived from a one-dimensional model.

  13. Pair spectrometer hodoscope for Hall D at Jefferson Lab

    Energy Technology Data Exchange (ETDEWEB)

    Barbosa, F.; Hutton, C.; Sitnikov, A. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Somov, A., E-mail: somov@jlab.org [Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States); Somov, S.; Tolstukhin, I. [National Research Nuclear University MEPhI, Moscow (Russian Federation)

    2015-09-21

    We present the design of the pair spectrometer hodoscope fabricated at Jefferson Lab and installed in the experimental Hall D. The hodoscope consists of thin scintillator tiles; the light from each tile is collected using wave-length shifting fibers and detected using a Hamamatsu silicon photomultiplier. Light collection was measured using relativistic electrons produced in the tagger area of the experimental Hall B.

  14. Critical current in the Integral Quantum Hall Effect

    International Nuclear Information System (INIS)

    Kostadinov, I.Z.

    1985-11-01

    A multiparticle theory of the Integral Quantum Hall Effect (IQHE) was constructed operating with pairs wave function as an order parameter. The IQHE is described with bosonic macroscopic states while the fractional QHE with fermionic ones. The calculation of the critical current and Hall conductivity temperature dependence is presented. (author)

  15. Spin hall effect associated with SU(2) gauge field

    Science.gov (United States)

    Tao, Y.

    2010-01-01

    In this paper, we focus on the connection between spin Hall effect and spin force. Here we investigate that the spin force due to spin-orbit coupling, which, in two-dimensional system, is equivalent to forces of Hirsch and Chudnovsky besides constant factors 3 and frac{3}{2} respectively, is a part of classic Anandan force, and that the spin Hall effect is an anomalous Hall effect. Furthermore, we develop the method of AC phase to derive the expression for the spin force, and note that the most basic spin Hall effect indeed originate from the AC phase and is therefore an intrinsic quantum mechanical property of spin. This method differs from approach of Berry phase in the study of anomalous Hall effect , which is the intrinsic property of the perfect crystal. On the other hand, we use an elegant skill to show that the Chudnovsky-Drude model is reasonable. Here we have improved the theoretical values of spin Hall conductivity of Chudnovsky. Compared to the theoretical values of spin Hall conductivity in the Chudnovsky-Drude model, ours are in better agreement with experimentation. Finally, we discuss the relation between spin Hall effect and fractional statistics.

  16. Stuart Hall on Racism and the Importance of Diasporic Thinking

    Science.gov (United States)

    Rizvi, Fazal

    2015-01-01

    In this article, I want to show how my initial encounter with the work of Stuart Hall was grounded in my reading of the later philosophy of Ludwig Wittgenstein, and was shaped by my interest in understanding the nature of racism across the three countries in which I had lived. Over the years, Hall's various writings have helped me to make sense of…

  17. Useful Pedagogical Applications of the Classical Hall Effect

    Science.gov (United States)

    Houari, Ahmed

    2007-01-01

    One of the most known phenomena in physics is the Hall effect. This is mainly due to its simplicity and to the wide range of its theoretical and practical applications. To complete the pedagogical utility of the Hall effect in physics teaching, I will apply it here to determine the Faraday constant as a fundamental physical number and the number…

  18. Bulk Versus Edge in the Quantum Hall Effect

    OpenAIRE

    Kao, Y. -C.; Lee, D. -H.

    1996-01-01

    The manifestation of the bulk quantum Hall effect on edge is the chiral anomaly. The chiral anomaly {\\it is} the underlying principle of the ``edge approach'' of quantum Hall effect. In that approach, $\\sxy$ should not be taken as the conductance derived from the space-local current-current correlation function of the pure one-dimensional edge problem.

  19. Residency training program: Perceptions of residents

    African Journals Online (AJOL)

    This study was carried out to ascertain the perception of the residency ... the time of the study. Analysis of the respondents showed similar findings for both senior and junior levels of training. Discussion. The introduction of the residency training program .... Overseas training/ attachment should be re-introduced. 12. (10.1).

  20. Unconventional quantum Hall effect in Floquet topological insulators

    KAUST Repository

    Tahir, M.

    2016-07-27

    We study an unconventional quantum Hall effect for the surface states of ultrathin Floquet topological insulators in a perpendicular magnetic field. The resulting band structure is modified by photon dressing and the topological property is governed by the low-energy dynamics of a single surface. An exchange of symmetric and antisymmetric surface states occurs by reversing the lights polarization. We find a novel quantum Hall state in which the zeroth Landau level undergoes a phase transition from a trivial insulator state, with Hall conductivity αyx = 0 at zero Fermi energy, to a Hall insulator state with αyx = e2/2h. These findings open new possibilities for experimentally realizing nontrivial quantum states and unusual quantum Hall plateaus at (±1/2,±3/2,±5/2, ...)e2/h. © 2016 IOP Publishing Ltd Printed in the UK.

  1. Accurate micro Hall effect measurements on scribe line pads

    DEFF Research Database (Denmark)

    Østerberg, Frederik Westergaard; Petersen, Dirch Hjorth; Wang, Fei

    2009-01-01

    be extracted from micro four-point measurements performed on a rectangular pad. The dimension of the investigated pad is 400 × 430 ¿m2, and the probe pitches range from 20 ¿m to 50 ¿m. The Monte Carlo method is used to find the optimal way to perform the Hall measurement and extract Hall mobility most......Hall mobility and sheet carrier density are important parameters to monitor in advanced semiconductor production. If micro Hall effect measurements are done on small pads in scribe lines, these parameters may be measured without using valuable test wafers. We report how Hall mobility can...... accurate in less than a minute. Measurements are performed on shallow trench isolation patterned silicon wafers to verify the results from the Monte Carlo method....

  2. A Novel Hall Effect Sensor Using Elaborate Offset Cancellation Method

    Directory of Open Access Journals (Sweden)

    Vlassis N. Petoussis

    2009-01-01

    Full Text Available The Hall effect is caused by a traverse force that is formed in the electrons or holes of metal element or semiconductor when are polarized by current source and simultaneously all the system it is found vertical in external magnetic field. Result is finally the production of difference of potential (Hall voltage in address vertical in that of current and magnetic field directions. In the present work is presented a new Hall sensor exploiting the former operation. In combination with his pioneering form and using dynamic spinning current technique with an elaborate sequence, it leads to satisfactory results of produced Hall voltage with small noise in a presence of external magnetic field. Anyone can see both the spinning current and anti-Hall technique in the same sensor simultaneously.

  3. Burnout among Canadian Psychiatry Residents: A National Survey.

    Science.gov (United States)

    Kealy, David; Halli, Priyanka; Ogrodniczuk, John S; Hadjipavlou, George

    2016-11-01

    Burnout is a serious problem for health care providers that has implications for clinical practice and personal health. While burnout is known to affect residents, no studies have examined the prevalence or impact of burnout among Canadian psychiatry residents. Residents in all Canadian psychiatry training programs were surveyed between May 1, 2014, and July 1, 2014. The survey included a well-validated, single-item measure to assess symptoms of burnout, several demographic questions, and Likert-scale items to assess residents' appraisals of empathic functioning and strategies for coping with stress from patient encounters. Responses were obtained from 400 residents, for a response rate of 48%. Twenty-one percent (N = 84) of residents reported symptoms of burnout. Burnout was reported more frequently by residents in postgraduate year 2 than by those in other years and was associated with engagement in personal psychotherapy during residency. No association was found between burnout and age, gender, or location of residency program. Residents who endorsed symptoms of burnout reported higher levels of compromised empathic functioning, were less likely to consult with supervisors about stressful clinical experiences, and were more likely to engage in unhealthy coping strategies. Symptoms of burnout affect one-fifth of Canadian psychiatry residents. The associations between burnout symptoms and problematic clinical and personal functioning suggest areas of concern for those involved in the training of Canadian psychiatry residents. © The Author(s) 2016.

  4. EL CROWN HALL. CONTEXTO Y PROYECTO / The Crown Hall. Context and project

    Directory of Open Access Journals (Sweden)

    José Santatecla Fayós

    2010-05-01

    Full Text Available RESUMEN El artículo enmarca el edificio del Crown Hall en el contexto docente y arquitectónico de Mies van der Rohe. Revisa sus inicios en la Bauhaus con su primera intervención en un espacio docente para la Bauhaus de Berlín en 1932, así como su marcha a Estados Unidos, los planteamientos arquitectónicos del campus del IIT y el proyecto del Crown Hall. El texto incide en el estudio del proceso proyectual del Crown Hall analizando la evolución de su concepción arquitectónica a través de las diferentes versiones del proyecto. Se constata la transición desde los primeros planteamientos arquitectónicos de los edificios del campus del IIT proyectados por Mies hacia el planteamiento del gran espacio unitario del Crown Hall. Este proyecto se puede entender desde la creciente importancia de la estructura, la claridad constructiva y el manejo del acero y vidrio como únicos materiales de la imagen del edificio y el carácter flexible y unitario del espacio. Finalmente se hace referencia al concepto del “espacio universal” en la arquitectura de Mies, como un concepto abstracto que supera los de flexibilidad de uso o unidad espacial, insinuando, a modo de reflexión, las principales variables que definirían el espacio universal miesiano. SUMMARY The article showcases the Crown Hall building in the educational and architectural context of Mies van der Rohe. It reviews his beginnings in the Bauhaus with his first intervention in an educational space for the Bauhaus of Berlin in 1932, as well as his sojourn to the United States, and the architectural approaches to the IIT campus and the Crown Hall project. The text touches on the study of the planning process for the Crown Hall, analysing the evolution of its architectural conception, through the different versions of the project. The article covers the transition from the first architectural approaches for the IIT campus buildings, planned by Mies, to the approach of the large unitary space

  5. Concept of Operating Indoor Skiing Halls with

    DEFF Research Database (Denmark)

    Paul, Joachim

    2003-01-01

    Indoor skiing halls are conventionally operated at low temperatures and with either crushed ice as snow substitute or snow made from freezing water in cold air. Both systems have a high energy demand for air cooling, floor freezing and consequently snow harvest. At the same time the snow at the top...... floor cooling/freezing and insulation become obsolete, significant savings in piping and building costs can be achieved. Due to the much higher evaporating temperature for the refrigeration system, the energy demand is kept low. Since the same equipment is used for both snowmaking and air cooling......, the running time of the equipment is high, resulting in a better economy. Using Binary Snow, with its unique qualities such as fluffy, crisp, white and ¿ since made daily ¿ "fresh and hygienic", offers great advantages in operating costs, investment costs and quality....

  6. Magnetic circuit for hall effect plasma accelerator

    Science.gov (United States)

    Manzella, David H. (Inventor); Jacobson, David T. (Inventor); Jankovsky, Robert S. (Inventor); Hofer, Richard (Inventor); Peterson, Peter (Inventor)

    2009-01-01

    A Hall effect plasma accelerator includes inner and outer electromagnets, circumferentially surrounding the inner electromagnet along a thruster centerline axis and separated therefrom, inner and outer magnetic conductors, in physical connection with their respective inner and outer electromagnets, with the inner magnetic conductor having a mostly circular shape and the outer magnetic conductor having a mostly annular shape, a discharge chamber, located between the inner and outer magnetic conductors, a magnetically conducting back plate, in magnetic contact with the inner and outer magnetic conductors, and a combined anode electrode/gaseous propellant distributor, located at a bottom portion of the discharge chamber. The inner and outer electromagnets, the inner and outer magnetic conductors and the magnetically conducting back plate form a magnetic circuit that produces a magnetic field that is largely axial and radially symmetric with respect to the thruster centerline.

  7. Frequency spectrum of Calder Hall reactor noise

    International Nuclear Information System (INIS)

    Cummins, J.D.

    1960-01-01

    The frequency spectrum of the noise power of Calder Hall reactor No. 1 has been obtained by analysing a tape recording of the backed off power. The root mean square noise power due to all frequencies above 0.001 cycles per second was found to be 0.13%. The noise power for this reactor, is due mainly to modulations of the power level by reactivity variations caused in turn by gas temperature changes. These gas temperature changes are caused by a Cyclic variation in the feedwater regulator to the heat exchanger. The apparatus and method used to determine the noise power are described in this memorandum. It is shown that for frequencies in the range 0.001 to 0.030 cycles per second the noise spectrum falls at 60 decibels per decade of frequency. (author)

  8. Numerical investigation of a Hall thruster plasma

    International Nuclear Information System (INIS)

    Roy, Subrata; Pandey, B.P.

    2002-01-01

    The dynamics of the Hall thruster is investigated numerically in the framework of a one-dimensional, multifluid macroscopic description of a partially ionized xenon plasma using finite element formulation. The model includes neutral dynamics, inelastic processes, and plasma-wall interaction. Owing to disparate temporal scales, ions and neutrals have been described by set of time-dependent equations, while electrons are considered in steady state. Based on the experimental observations, a third order polynomial in electron temperature is used to calculate ionization rate. The results show that in the acceleration channel the increase in the ion number density is related to the decrease in the neutral number density. The electron and ion velocity profiles are consistent with the imposed electric field. The electron temperature remains uniform for nearly two-thirds of the channel; then sharply increases to a peak before dropping slightly at the exit. This is consistent with the predicted electron gyration velocity distribution

  9. Gauge Physics of Spin Hall Effect

    Science.gov (United States)

    Tan, Seng Ghee; Jalil, Mansoor B. A.; Ho, Cong Son; Siu, Zhuobin; Murakami, Shuichi

    2015-12-01

    Spin Hall effect (SHE) has been discussed in the context of Kubo formulation, geometric physics, spin orbit force, and numerous semi-classical treatments. It can be confusing if the different pictures have partial or overlapping claims of contribution to the SHE. In this article, we present a gauge-theoretic, time-momentum elucidation, which provides a general SHE equation of motion, that unifies under one theoretical framework, all contributions of SHE conductivity due to the kinetic, the spin orbit force (Yang-Mills), and the geometric (Murakami-Fujita) effects. Our work puts right an ambiguity surrounding previously partial treatments involving the Kubo, semiclassical, Berry curvatures, or the spin orbit force. Our full treatment shows the Rashba 2DEG SHE conductivity to be instead of -, and Rashba heavy hole instead of -. This renewed treatment suggests a need to re-derive and re-calculate previously studied SHE conductivity.

  10. Fractional quantum Hall effect in optical lattices

    International Nuclear Information System (INIS)

    Hafezi, M.; Demler, E.; Lukin, M. D.; Soerensen, A. S.

    2007-01-01

    We analyze a recently proposed method to create fractional quantum Hall (FQH) states of atoms confined in optical lattices [A. Soerensen et al., Phys. Rev. Lett. 94, 086803 (2005)]. Extending the previous work, we investigate conditions under which the FQH effect can be achieved for bosons on a lattice with an effective magnetic field and finite on-site interaction. Furthermore, we characterize the ground state in such systems by calculating Chern numbers which can provide direct signatures of topological order and explore regimes where the characterization in terms of wave-function overlap fails. We also discuss various issues which are relevant for the practical realization of such FQH states with ultracold atoms in an optical lattice, including the presence of a long-range dipole interaction which can improve the energy gap and stabilize the ground state. We also investigate a detection technique based on Bragg spectroscopy to probe these systems in an experimental realization

  11. Enhancing teamwork between chief residents and residency program directors: description and outcomes of an experiential workshop.

    Science.gov (United States)

    McPhillips, Heather A; Frohna, John G; Murad, M Hassan; Batra, Maneesh; Panda, Mukta; Miller, Marsha A; Brigham, Timothy P; Doughty, Robert A

    2011-12-01

    An effective working relationship between chief residents and residency program directors is critical to a residency program's success. Despite the importance of this relationship, few studies have explored the characteristics of an effective program director-chief resident partnership or how to facilitate collaboration between the 2 roles, which collectively are important to program quality and resident satisfaction. We describe the development and impact of a novel workshop that paired program directors with their incoming chief residents to facilitate improved partnerships. The Accreditation Council for Graduate Medical Education sponsored a full-day workshop for residency program directors and their incoming chief residents. Sessions focused on increased understanding of personality styles, using experiential learning, and open communication between chief residents and program directors, related to feedback and expectations of each other. Participants completed an anonymous survey immediately after the workshop and again 8 months later to assess its long-term impact. Participants found the workshop to be a valuable experience, with comments revealing common themes. Program directors and chief residents expect each other to act as a role model for the residents, be approachable and available, and to be transparent and fair in their decision-making processes; both groups wanted feedback on performance and clear expectations from each other for roles and responsibilities; and both groups identified the need to be innovative and supportive of changes in the program. Respondents to the follow-up survey reported that workshop participation improved their relationships with their co-chiefs and program directors. Participation in this experiential workshop improved the working relationships between chief residents and program directors. The themes that were identified can be used to foster communication between incoming chief residents and residency directors and to

  12. Nonadiabatic effects in the Quantum Hall regime

    International Nuclear Information System (INIS)

    Page, D.A.; Brown, E.

    1993-01-01

    The authors consider the effect of a finite electric field on the states of a Bloch electron in two dimensions, with a uniform magnetic field present. They make use of the concept of electric time translation symmetry and treat the electric and magnetic fields symmetrically in a time dependent formalism. In addition to a wave vector k, the states are characterized by a frequency specifying the behavior under electric time translations. An effective Hamiltonian is employed to obtain the splitting of an isolated Bloch band into open-quotes frequencyclose quotes subbands. The time-averaged velocity and energy of the states are expressed in terms of the frequency dispersion. The relationship to the Stark ladder eigenstates in a scalar potential representation of the electric field is examined. This is seen to justify the use of the averaged energy in determining occupation of the states. In the weak electric field (adiabatic) limit, an expression is recovered for the quantized Hall conductivity of a magnetic subband as a topological invariant. A numerical procedure is outlined and results obtained over a range of electric field strengths. A transition between strong and weak field regimes is seen, with level repulsions between the frequencies playing an important role. The numerical results show how the magnetic subband structure and quantized Hall conductivity emerge as the electric field becomes weaker. In this regime, the behavior can be understood by comparison to the predictions of the adiabatic approximation. The latter predicts crossings in the frequencies at certain locations in wave vector space. Nonadiabatic effects are seen to produce gaps in the frequency spectrum at these locations. 35 refs., 14 figs

  13. Resident Characteristics Report

    Data.gov (United States)

    Department of Housing and Urban Development — The Resident Characteristics Report summarizes general information about households who reside in Public Housing, or who receive Section 8 assistance. The report...

  14. Motherhood during residency training: challenges and strategies.

    Science.gov (United States)

    Walsh, Allyn; Gold, Michelle; Jensen, Phyllis; Jedrzkiewicz, Michelle

    2005-07-01

    To determine what factors enable or impede women in a Canadian family medicine residency program from combining motherhood with residency training. To determine how policies can support these women, given that in recent decades the number of female family medicine residents has increased. Qualitative study using in-person interviews. McMaster University Family Medicine Residency Program. Twenty-one of 27 family medicine residents taking maternity leave between 1994 and 1999. Semistructured interviews. The research team reviewed transcripts of audiotaped interviews for emerging themes; consensus was reached on content and meaning. NVIVO software was used for data analysis. Long hours, unpredictable work demands, guilt because absences from work increase workload for colleagues, and residents' high expectations of themselves cause pregnant residents severe stress. This stress continues upon return to work; finding adequate child care is an added stress. Residents report receiving less support from colleagues and supervisors upon return to work; they associate this with no longer being visibly pregnant. Physically demanding training rotations put additional strain on pregnant residents and those newly returned to work. Flexibility in scheduling rotations can help accommodate needs at home. Providing breaks, privacy, and refrigerators at work can help maintain breastfeeding. Allowing residents to remain involved in academic and clinical work during maternity leave helps maintain clinical skills, build new knowledge, and promote peer support. Pregnancy during residency training is common and becoming more common. Training programs can successfully enhance the experience of motherhood during residency by providing flexibility at work to facilitate a healthy balance among the competing demands of family, work, and student life.

  15. Burnout among Canadian Psychiatry Residents: A National Survey

    Science.gov (United States)

    Halli, Priyanka; Ogrodniczuk, John S.; Hadjipavlou, George

    2016-01-01

    Objective: Burnout is a serious problem for health care providers that has implications for clinical practice and personal health. While burnout is known to affect residents, no studies have examined the prevalence or impact of burnout among Canadian psychiatry residents. Method: Residents in all Canadian psychiatry training programs were surveyed between May 1, 2014, and July 1, 2014. The survey included a well-validated, single-item measure to assess symptoms of burnout, several demographic questions, and Likert-scale items to assess residents’ appraisals of empathic functioning and strategies for coping with stress from patient encounters. Results: Responses were obtained from 400 residents, for a response rate of 48%. Twenty-one percent (N = 84) of residents reported symptoms of burnout. Burnout was reported more frequently by residents in postgraduate year 2 than by those in other years and was associated with engagement in personal psychotherapy during residency. No association was found between burnout and age, gender, or location of residency program. Residents who endorsed symptoms of burnout reported higher levels of compromised empathic functioning, were less likely to consult with supervisors about stressful clinical experiences, and were more likely to engage in unhealthy coping strategies. Conclusions: Symptoms of burnout affect one-fifth of Canadian psychiatry residents. The associations between burnout symptoms and problematic clinical and personal functioning suggest areas of concern for those involved in the training of Canadian psychiatry residents. PMID:27310237

  16. Hall v. Florida: defining intellectual disability in the shadow of the death penalty.

    Science.gov (United States)

    Appelbaum, Paul S

    2014-10-01

    When the U.S. Supreme Court held that persons with mental retardation (now called intellectual disability) could not be sentenced to death, it left the question of how to define the condition to the states. That issue was raised in Hall v. Florida, which challenged one state's "bright-line rule" barring consideration of defendants with IQs over 70. In an endorsement of the professional consensus, the justices ruled that a more flexible approach that takes into account both intellectual and adaptive functioning is required. The Court's posture may bode well for its acceptance of mental health expertise in future cases.

  17. Impact of Smoke-Free Residence Hall Policies: The Views of Administrators at 3 State Universities

    Science.gov (United States)

    Gerson, Megan

    2005-01-01

    Nationwide efforts to protect the public against the health effects of secondhand smoke have prompted college and university administrators to adopt more restrictive smoking policies. Some campus officials are concerned that new policies will lead to student backlash, increased staff workloads, and an increased economic burden. To understand the…

  18. Transport measurements of GaAs/AlGaAs devices in the ``anti-Hall-bar within a Hall bar" geometry

    Science.gov (United States)

    Kriisa, Annika; Mani, Ramesh

    2009-11-01

    Hall effect measurements are often carried out in the Hall geometry, which is a thin rectangular plate with current and Hall voltage contacts at the external boundary. The motivation of this study is to further understand the impact on Hall effect when a hole is inserted inside the Hall geometry. One way on conducting this investigation is to superimpose an ``anti-Hall bar'' inside the standard Hall bar, where the anti Hall bar is actually the hole inside the Hall device with contacts on the inside boundary of this hole. This configuration is thought to generate an ordinary Hall effect within the interior boundary. One believes that it might also be possible to simultaneously realize multiple independent Hall effects by injecting multiple currents into the multiply connected device [1]. We have experimentally studied the Hall effect in the doubly connected ``anti-Hall bar within a Hall bar'' geometry fabricated out of the GaAs/AlGaAs semiconductor system, and convey the results in this presentation. [4pt] [1] R. G. Mani and K. von Klitzing, Z. Phys. B 92, 335 (1993).

  19. Hall conductance and topological invariant for open systems.

    Science.gov (United States)

    Shen, H Z; Wang, W; Yi, X X

    2014-09-24

    The Hall conductivity given by the Kubo formula is a linear response of quantum transverse transport to a weak electric field. It has been intensively studied for quantum systems without decoherence, but it is barely explored for systems subject to decoherence. In this paper, we develop a formulism to deal with this issue for topological insulators. The Hall conductance of a topological insulator coupled to an environment is derived, the derivation is based on a linear response theory developed for open systems in this paper. As an application, the Hall conductance of a two-band topological insulator and a two-dimensional lattice is presented and discussed.

  20. Acoustic investigations of concert halls for rock music

    DEFF Research Database (Denmark)

    Adelman-Larsen, Niels Werner; Thompson, Eric Robert; Gade, Anders Christian

    2007-01-01

    Objective measurement data and subjective evaluations have been collected from 20 small-/medium-sized halls in Denmark used for amplified rhythmic music concerts (pop, rock, jazz). The purpose of the study was to obtain knowledge about optimum acoustic conditions for this type of hall. The study...... is motivated by the fact that most concert tickets sold in Denmark relate to concerts within these genres in this kind of venue. The subjective evaluations were carried out by professional musicians and sound engineers who responded on the basis of their experiences working in these (and other) halls. From...

  1. Effective Field Theory of Fractional Quantized Hall Nematics

    Energy Technology Data Exchange (ETDEWEB)

    Mulligan, Michael; /MIT, LNS; Nayak, Chetan; /Station Q, UCSB; Kachru, Shamit; /Stanford U., Phys. Dept. /SLAC

    2012-06-06

    We present a Landau-Ginzburg theory for a fractional quantized Hall nematic state and the transition to it from an isotropic fractional quantum Hall state. This justifies Lifshitz-Chern-Simons theory - which is shown to be its dual - on a more microscopic basis and enables us to compute a ground state wave function in the symmetry-broken phase. In such a state of matter, the Hall resistance remains quantized while the longitudinal DC resistivity due to thermally-excited quasiparticles is anisotropic. We interpret recent experiments at Landau level filling factor {nu} = 7/3 in terms of our theory.

  2. Signal conditioning and processing for metallic Hall sensors.

    Czech Academy of Sciences Publication Activity Database

    Entler, Slavomír; Ďuran, Ivan; Sládek, P.; Vayakis, G.; Kočan, M.

    2017-01-01

    Roč. 123, November (2017), s. 783-786 ISSN 0920-3796. [SOFT 2016: Symposium on Fusion Technology /29./. Prague, 05.09.2016-09.09.2016] R&D Projects: GA MŠk LG14002 Institutional support: RVO:61389021 Keywords : Hall sensor * Lock-in * Synchronous detection * Current spinning * Hall effect * Planar hall effect suppression Subject RIV: JF - Nuclear Energetics OBOR OECD: Nuclear related engineering Impact factor: 1.319, year: 2016 http://www.sciencedirect.com/science/article/pii/S0920379617305070

  3. Anomalous Hall effect in Fe/Gd bilayers

    KAUST Repository

    Xu, W. J.

    2010-04-01

    Non-monotonic dependence of anomalous Hall resistivity on temperature and magnetization, including a sign change, was observed in Fe/Gd bilayers. To understand the intriguing observations, we fabricated the Fe/Gd bilayers and single layers of Fe and Gd simultaneously. The temperature and field dependences of longitudinal resistivity, Hall resistivity and magnetization in these films have also been carefully measured. The analysis of these data reveals that these intriguing features are due to the opposite signs of Hall resistivity/or spin polarization and different Curie temperatures of Fe and Gd single-layer films. Copyright (C) EPLA, 2010

  4. Materials for giant spin Hall effect devices

    Science.gov (United States)

    Jayanthinarasimham, Avyaya

    Studies presented in this thesis are an effort to control the growth of beta W and explore the in-plane current induced effects in a beta W and CoFeB bilayer. Physical vapor deposited W films beyond 5 nm transform from beta to the stable bulk alpha phase. beta W films with 5 nm thickness when integrated with the other films for large scale fabrication presents a small process window for etch and deposition errors. Also, CoFeB on W does not generate perpendicular magnetic anisotropy (PMA) even when it is capped with MgOjTa(Capping) layers. The beta W with larger thickness process window and a CoFeB with PMA deposited on top of W is necessary for an ideal functioning spin Hall effect (SHE) device. This thesis will focus on overcoming the above mentioned challenges. 2 sccm of O2 gas was introduced during the growth of beta W, this resulted in thicker films with beta W. If a large amount of O2 was introduced, it resulted in complete oxidation and loss of crystallinity. Thus an optimum amount of oxygen is necessary. However, introducing O2 during the deposition can effect other metals present on the wafer, which is not ideal. N2 was utilized to achieve thicker beta W films. Upon introducing N with similar concentration of O, it lead to amorphization of W, thus revealing a kinetic control. A pulsed N2 of 1 sccm at 2-second period was used to kinetically control the growth of beta W. Both the techniques were able to grow beta W from 5 nm up to 20 nm thick films. Films with N-assisted growth exhibited lower resistance and higher metallic character. 1 nm Ta, Mo and CoFe were used as insert layers between beta W and CoFeB to induce PMA. 1 nm Mo insert layer and 5 nm Mo under layer have largely different interfaces with CoFeB even when annealed in ultra high vacuum (UHV) environment. Thus, 1 nm Mo layer does not show any PMA. The CoFe insert layer adds to the bulk anisotropy and dominates the interface anisotropy, and does not lead to any PMA. The 1 nm Ta insert exhibits

  5. Direct Drive Hall Thruster System Development

    Science.gov (United States)

    Hoskins, W. Andrew; Homiak, Daniel; Cassady, R. Joseph; Kerslake, Tom; Peterson, Todd; Ferguson, Dale; Snyder, Dave; Mikellides, Ioannis; Jongeward, Gary; Schneider, Todd

    2003-01-01

    The sta:us of development of a Direct Drive Ha!! Thruster System is presented. 13 the first part. a s:udy of the impacts to spacecraft systems and mass benefits of a direct-drive architecture is reviewed. The study initially examines four cases of SPT-100 and BPT-4000 Hall thrusters used for north-south station keeping on an EXPRESS-like geosynchronous spacecraft and for primary propulsion for a Deep Space- 1 based science spacecraft. The study is also extended the impact of direct drive on orbit raising for higher power geosynchronous spacecraft and on other deep space missions as a function of power and delta velocity. The major system considerations for accommodating a direct drive Hall thruster are discussed, including array regulation, system grounding, distribution of power to the spacecraft bus, and interactions between current-voltage characteristics for the arrays and thrusters. The mass benefit analysis shows that, for the initial cases, up to 42 kg of dry mass savings is attributable directly to changes in the propulsion hardware. When projected mass impacts of operating the arrays and the electric power system at 300V are included, up to 63 kg is saved for the four initial cases. Adoption of high voltage lithium ion battery technology is projected to further improve these savings. Orbit raising of higher powered geosynchronous spacecraft, is the mission for which direct drive provides the most benefit, allowing higher efficiency electric orbit raising to be accomplished in a limited period of time, as well as nearly eliminating significant power processing heat rejection mass. The total increase in useful payload to orbit ranges up to 278 kg for a 25 kW spacecraft, launched from an Atlas IIA. For deep space missions, direct drive is found to be most applicable to higher power missions with delta velocities up to several km/s , typical of several Discovery-class missions. In the second part, the status of development of direct drive propulsion power

  6. Hall penetration of a magnetic field into a uniform conductor

    International Nuclear Information System (INIS)

    Gordeev, A.V.

    1992-01-01

    It is shown that magnetic fields can convect into a uniform conductor due to the breakdown of quasineutrality associated with the Hall field. The nonlinear equation describing this process is derived and studied. 9 refs., 2 figs

  7. Quantum Hall Ferroelectrics and Nematics in Multivalley Systems

    Science.gov (United States)

    Sodemann, Inti; Zhu, Zheng; Fu, Liang

    2017-10-01

    We study broken symmetry states at integer Landau-level fillings in multivalley quantum Hall systems whose low-energy dispersions are anisotropic. When the Fermi surface of individual pockets lacks twofold rotational symmetry, like in bismuth (111) [Feldman et al. , Observation of a Nematic Quantum Hall Liquid on the Surface of Bismuth, Science 354, 316 (2016), 10.1126/science.aag1715] and in Sn1 -xPbxSe (001) [Dziawa et al., Topological Crystalline Insulator States in Pb1 -xSnxSe , Nat. Mater. 11, 1023 (2012), 10.1038/nmat3449] surfaces, interactions tend to drive the formation of quantum Hall ferroelectric states. We demonstrate that the dipole moment in these states has an intimate relation to the Fermi surface geometry of the parent metal. In quantum Hall nematic states, like those arising in AlAs quantum wells, we demonstrate the existence of unusually robust Skyrmion quasiparticles.

  8. High Throughput Hall Thruster for Small Spacecraft, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek is developing a high throughput nominal 100-W Hall Effect Thruster. This device is well sized for spacecraft ranging in size from several tens of kilograms to...

  9. Performance of an 8 kW Hall Thruster

    National Research Council Canada - National Science Library

    Pote, B

    2000-01-01

    ... in addition to high Isp for station keeping. To satisfy these requirements, Busek Co. embarked on the development of a novel, high power Hall thruster, capable of efficient operation over a broad range of Isp and thrust...

  10. Preliminary Study of Arcjet Neutralization of Hall Thruster Clusters (Postprint)

    National Research Council Canada - National Science Library

    Walker, Quentin E; Cappelli, Mark A; Hargus, William A

    2007-01-01

    ... to a surrogate anode from the plume of low power arcjets operating on hydrogen and helium, and then demonstrate the first successful operation of a low power Hall thruster-arcjet neutralizer package...

  11. Measuring the Hall weighting function for square and cloverleaf geometries

    Science.gov (United States)

    Scherschligt, Julia K.; Koon, Daniel W.

    2000-02-01

    We have directly measured the Hall weighting function—the sensitivity of a four-wire Hall measurement to the position of macroscopic inhomogeneities in Hall angle—for both a square shaped and a cloverleaf specimen. Comparison with the measured resistivity weighting function for a square geometry [D. W. Koon and W. K. Chan, Rev. Sci. Instrum. 69, 12 (1998)] proves that the two measurements sample the same specimen differently. For Hall measurements on both a square and a cloverleaf, the function is nonnegative with its maximum in the center and its minimum of zero at the edges of the square. Converting a square into a cloverleaf is shown to dramatically focus the measurement process onto a much smaller portion of the specimen. While our results agree qualitatively with theory, details are washed out, owing to the finite size of the magnetic probe used.

  12. What do you measure when you measure the Hall effect?

    Science.gov (United States)

    Koon, D. W.; Knickerbocker, C. J.

    1993-02-01

    A formalism for calculating the sensitivity of Hall measurements to local inhomogeneities of the sample material or the magnetic field is developed. This Hall weighting function g(x,y) is calculated for various placements of current and voltage probes on square and circular laminar samples. Unlike the resistivity weighting function, it is nonnegative throughout the entire sample, provided all probes lie at the edge of the sample. Singularities arise in the Hall weighting function near the current and voltage probes except in the case where these probes are located at the corners of a square. Implications of the results for cross, clover, and bridge samples, and the implications of our results for metal-insulator transition and quantum Hall studies are discussed.

  13. Iodine Hall Thruster for Space Exploration, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek Co Inc proposes to develop a high power (high thrust) electric propulsion system featuring an iodine fueled Hall Effect Thruster (HET). The system to be...

  14. Magnetohydrodynamic simulations of Gamble I POS with Hall effect

    International Nuclear Information System (INIS)

    Roderick, N.F.; Frese, M.H.; Peterkin, R.E.; Payne, S.S.

    1989-01-01

    Two dimensional single fluid magnetohydrodynamic simulations have been conducted to investigate the effects of the Hall electric field on magnetic field transport in plasma opening switches of the type used on Gamble I. The Hall terms were included in the magnetic field transport equation in the two dimensional simulation code MACH2 through the use of a generalized Ohm's law. Calculations show the Hall terms augment the field transport previously observed to occur through ion fluid motion and diffusion. For modest values of microturbulent collision frequency, board current channels were observed . Results also show the magnetic field transport to be affected by the cathode boundary conditions with the Hall terms included. In all cases center of mass motion was slight

  15. Magnesium Hall Thruster for Solar System Exploration, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — The innovation being developed in this program is a Mg Hall Effect Thruster system that would open the door for In-Situ Resource Utilization based solar system...

  16. Hall Mobility of Amorphous Ge2Sb2Te5

    National Research Council Canada - National Science Library

    Baily, S. A; Emin, David; Li, Heng

    2006-01-01

    The electrical conductivity, Seebeck coefficient, and Hall coefficient of 3 micron thick films of amorphous Ge2Sb2Te5 have been measured as functions of temperature from room temperature down to as low as 200 K...

  17. Quantum Computing With Quasiparticles of the Fractional Quantum Hall Effect

    National Research Council Canada - National Science Library

    Averin, Dmitri

    2001-01-01

    The focus of this project was the theoretical study of quantum computation based on controlled transfer of individual quasiparticles in systems of quantum antidots in the regime of the Fractional Quantum Hall Effect (FQHE...

  18. Low Temperature Hall Measurements of Neutron Irradiated Silicon Carbide

    National Research Council Canada - National Science Library

    Bonavita, Ange1o

    2004-01-01

    .... No features suggesting annealing were found below a temperature of 340K. Temperature dependant Hall effect measurements were taken over a range of 100K to 340K recording resistivity, carrier densities, and mobility...

  19. Simultaneous effects of Hall and convective conditions on peristaltic ...

    Indian Academy of Sciences (India)

    stress fluid in an inclined asymmetric channel with convective conditions. Soret and Dufour and Hall effects are taken into account. Analysis has been carried out in a wave frame of reference. Expressions for velocity, pressure gradient, temperature ...

  20. High Input Voltage Hall Thruster Discharge Converter, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The overall scope of this Phase I/II effort is the development of a high efficiency 15kW (nominal) Hall thruster discharge converter. In Phase I, Busek Co. Inc. will...

  1. A High Performance Cathode Heater for Hall Thrusters, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — High current hollow cathodes are the baseline electron source for next generation high power Hall thrusters. Currently for electron sources providing current levels...

  2. Hall effects and related phenomena in disordered Rashba 2DEG

    International Nuclear Information System (INIS)

    Inoue, Jun-ichiro; Kato, Takashi; Bauer, Gerrit E W; Molenkamp, Laurens W

    2009-01-01

    We review our recent work on the spin and anomalous Hall effects and other related phenomena caused by the intrinsic spin–orbit interaction. We focus our attention on disorder effects on these transport properties by adopting a model of a two-dimensional electron gas with a Rashba-type spin–orbit interaction. A spin-polarized model is adopted to calculate the anomalous Hall effect and anisotropic magnetoresistance. It is shown that the spin Hall conductivity in the ballistic transport regime is cancelled by the so-called vertex corrections for the disorder scattering, and that the anomalous Hall conductivity and anisotropic magnetoresistance vanish unless the lifetime is spin dependent. We further present results on spin accumulation under an electric field

  3. Dual Mode Low Power Hall Thruster, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Sample and return missions desire and missions like Saturn Observer require a low power Hall thruster that can operate at high thrust to power as well as high...

  4. Positive operator valued measures and the quantum Monty Hall problem

    Directory of Open Access Journals (Sweden)

    Claudia Zander

    2006-09-01

    Full Text Available A quantum version of the Monty Hall problem, based upon the Positive Operator Valued Measures (POVM formalism, is proposed. It is shown that basic normalization and symmetry arguments lead univocally to the associated POVM elements, and that the classical probabilities associated with the Monty Hall scenario are recovered for a natural choice of the measurement operators.Uma visão quântica do problema Monty Hall é proposta baseada no formalismo das Medidas Avaliadas do Operador Positivo (POVM. Demonstra-se que os argumentos de normalização básica e simetria levam de maneira inequívoca para elementos associados a POVM e que as probabilidades clássicas associadas ao cenário Monty Hall são recuperadas para uma escolha natural de medidas operadoras.

  5. High Throughput Hall Thruster for Small Spacecraft Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek Co. Inc. proposes to develop a high throughput, nominal 100 W Hall Effect Thruster (HET). This HET will be sized for small spacecraft (< 180 kg), including...

  6. Imaging of Low Compressibility Strips in the Quantum Hall Liquid

    OpenAIRE

    Finkelstein, G.; Glicofridis, P. I.; Tessmer, S. H.; Ashoori, R. C.; Melloch, M. R.

    1999-01-01

    Using Subsurface Charge Accumulation scanning microscopy we image strips of low compressibility corresponding to several integer Quantum Hall filling factors. We study in detail the strips at Landau level filling factors $\

  7. Observation of the anomalous Hall effect in GaAs

    International Nuclear Information System (INIS)

    Miah, M Idrish

    2007-01-01

    Devices for the direct detection of the spin current, based on the anomalous Hall effect (AHE), are fabricated on n-type GaAs bulk semiconductor materials. The AHE is observed in the device when the photoinduced spin-polarized electrons are injected into it, and it is found that the effect depends on the applied electric field. The origin of the field-dependent observed Hall effect is discussed based on the D'yakonov-Perel' (DP) spin relaxation mechanism. The spin-dependent Hall effect is also found to be enhanced with increasing doping concentration. The present experimental results might have potential applications in semiconductor spintronic devices since the effect is closely related to the spin Hall effect

  8. Observation of the anomalous Hall effect in GaAs

    Energy Technology Data Exchange (ETDEWEB)

    Miah, M Idrish [Nanoscale Science and Technology Centre, School of Science, Griffith University, Nathan, Brisbane, QLD 4111 (Australia); Department of Physics, University of Chittagong, Chittagong, Chittagong - 4331 (Bangladesh)

    2007-03-21

    Devices for the direct detection of the spin current, based on the anomalous Hall effect (AHE), are fabricated on n-type GaAs bulk semiconductor materials. The AHE is observed in the device when the photoinduced spin-polarized electrons are injected into it, and it is found that the effect depends on the applied electric field. The origin of the field-dependent observed Hall effect is discussed based on the D'yakonov-Perel' (DP) spin relaxation mechanism. The spin-dependent Hall effect is also found to be enhanced with increasing doping concentration. The present experimental results might have potential applications in semiconductor spintronic devices since the effect is closely related to the spin Hall effect.

  9. Iodine Hall Thruster for Space Exploration, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — In the Phase I program, Busek Co. Inc. tested an existing Hall thruster, the BHT-8000, on iodine propellant. The thruster was fed by a high flow iodine feed system,...

  10. 2D Electrostatic Potential Solver for Hall Thruster Simulation

    National Research Council Canada - National Science Library

    Koo, Justin W

    2006-01-01

    ...) for Hall thruster simulation. It is based on a finite volume discretization of a current conservation equation where the electron current density is described by a Generalized Ohm's law description...

  11. Quantum Theory of Conducting Matter Superconductivity and Quantum Hall Effect

    CERN Document Server

    Fujita, Shigeji; Godoy, Salvador

    2009-01-01

    Explains major superconducting properties including zero resistance, Meissner effect, sharp phase change, flux quantization, excitation energy gap, and Josephson effects using quantum statistical mechanical calculations. This book covers the 2D superconductivity and the quantum Hall effects

  12. Magnesium Hall Thruster for Solar System Exploration, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek proposes to prove the feasibility of a Mg Hall effect thruster system that would open the door for In-Situ Resource Utilization (ISRU) based solar system...

  13. Are psychiatric residents still interested in psychoanalysis? A brief report.

    Science.gov (United States)

    Damsa, Cristian; Bryois, Christian; Morelli, Dawn; Cailhol, Lionel; Adam, Eric; Coman, Adrian; Stamatoiu, Daniela; Lazignac, Coralie; Freymann, Jean-Richard

    2010-12-01

    In spite of the efficacy of the psychodynamic psychotherapies, the number of young psychiatric residents interested in psychodynamic therapies is decreasing. Our psychoanalytical group, Genden (Genève-Denver), explored the possible reasons for psychiatric residents' hesitation to get psychoanalytic training. Five psychoanalytical psychotherapists met weekly for a year in order to debate that question, focusing on personal feedbacks from all of our 100 residents in psychiatry working with us for at least 4 years. Following the residents' responses, our focus group proposed ten commonsense feedbacks for psychoanalysts regarding stimulating young psychiatric residents' interest in psychoanalytic approaches.

  14. The integer quantum hall effect revisited

    Energy Technology Data Exchange (ETDEWEB)

    Michalakis, Spyridon [Los Alamos National Laboratory; Hastings, Matthew [Q STATION, CALIFORNIA

    2009-01-01

    For T - L x L a finite subset of Z{sup 2}, let H{sub o} denote a Hamiltonian on T with periodic boundary conditions and finite range, finite strength intetactions and a unique ground state with a nonvanishing spectral gap. For S {element_of} T, let q{sub s} denote the charge at site s and assume that the total charge Q = {Sigma}{sub s {element_of} T} q{sub s} is conserved. Using the local charge operators q{sub s}, we introduce a boundary magnetic flux in the horizontal and vertical direction and allow the ground state to evolve quasiadiabatically around a square of size one magnetic flux, in flux space. At the end of the evolution we obtain a trivial Berry phase, which we compare, via a method reminiscent of Stokes Theorem. to the Berry phase obtained from an evolution around an exponentially small loop near the origin. As a result, we show, without any averaging assumption, that the Hall conductance is quantized in integer multiples of e{sup 2}/h up to exponentially small corrections of order e{sup -L/{zeta}}, where {zeta}, is a correlation length that depends only on the gap and the range and strength of the interactions.

  15. Hall MHD reconnection in cometary magnetotail

    International Nuclear Information System (INIS)

    Jovanovic, Dusan; Shukla, Padma Kant; Morfill, Gregor

    2005-01-01

    The fine structure of cometary tails (swirls, loops and blobs) is studied in the framework of resistive magnetic reconnection without a guide field in a dusty plasma. For a high-beta plasma (β ∼ 1) consisting of electrons, ions, and immobile dust grains, a two-fluid description is used to study electromagnetic perturbations with the frequency below Ωi, propagating at an arbitrary angle, and including the effects of Hall current. A zero-order current associated with the anti-parallel magnetic configuration may exist even in the limit of zero plasma temperature in a dusty plasma due to a symmetry breaking between electrons and ions by dust grains that yields an E-vector x B-vector current. In the perturbed state, a new linear electromagnetic mode is found in dusty plasma which is evanescent below the Rao cut-off frequency and has the characteristic wavelength comparable to the ion skin depth, which enables the reconnection at short spatial scales. The role of the dust is found to be twofold, yielding a new mode outside of the current sheet and altering the continuity conditions at its edge by an inhomogeneous Doppler shift associated with the E-vector x B-vector current

  16. Brand new hall in the main building

    CERN Multimedia

    Corinne Pralavorio

    2014-01-01

    The renovation of the UNIQA and post office premises is getting under way, with their reopening scheduled for the spring.   The renovation of the large hall in the main building (Building 500) has finally reached the home straight. As of this week, building contractors will get to work on the last part – the offices of UNIQA and La Poste. In the last week of November, the two concessions moved their offices across Route Scherrer to the same part of Building 510 where UBS was temporarily housed during the bank’s refurbishment. Their services were therefore unavailable for one day. The renovation work will last until the spring, with the new offices expected to open in May 2015. Between now and then, the windows and insulation will be completely refitted, with a view to reducing heat loss considerably, and, above all, the premises will be modernised to improve customer reception and service. For example, UNIQA’s new premises will feature a confidential area, guarantee...

  17. Following the Path Blazed by Jan Hall

    Science.gov (United States)

    Hollberg, Leo

    It was a great pleasure to gather with friends in August 2004 for the symposium honoring Jan Hall and celebrating his 70th birthday, and this book provides a unique opportunity to record some words commemorating Jan's incredible contributions to science and to our lives. At best, my recollections are a faded, myopic snapshot of some events that come to mind after many years of association with Jan. Reflecting on the years that have passed since I first entered Jan's lab, I see that many things have changed, technology has advanced (mostly for the better), the world has evolved in dramatic and significant ways (some good and some not), and I have grown older (but unfortunately not wiser as one might have hoped). Nonetheless, after many years, I find myself still following the path pointed out by Jan's visions and investing most of my productive time and energy working as a scientist trying to get atoms, lasers, electronics, (and the institutional bureaucracy that comes along with them) to work in some kind of harmony…

  18. Acoustics in Halls for Speech and Music

    Science.gov (United States)

    Gade, Anders C.

    This chapter deals specifically with concepts, tools, and architectural variables of importance when designing auditoria for speech and music. The focus will be on cultivating the useful components of the sound in the room rather than on avoiding noise from outside or from installations, which is dealt with in Chap. 11. The chapter starts by presenting the subjective aspects of the room acoustic experience according to consensus at the time of writing. Then follows a description of their objective counterparts, the objective room acoustic parameters, among which the classical reverberation time measure is only one of many, but still of fundamental value. After explanations on how these parameters can be measured and predicted during the design phase, the remainder of the chapter deals with how the acoustic properties can be controlled by the architectural design of auditoria. This is done by presenting the influence of individual design elements as well as brief descriptions of halls designed for specific purposes, such as drama, opera, and symphonic concerts. Finally, some important aspects of loudspeaker installations in auditoria are briefly touched upon.

  19. Identifying Gaps and Launching Resident Wellness Initiatives: The 2017 Resident Wellness Consensus Summit

    Directory of Open Access Journals (Sweden)

    Nicole Battaglioli

    2018-02-01

    Full Text Available Introduction: Burnout, depression, and suicidality among residents of all specialties have become a critical focus for the medical education community, especially among learners in graduate medical education. In 2017 the Accreditation Council for Graduate Medical Education (ACGME updated the Common Program Requirements to focus more on resident wellbeing. To address this issue, one working group from the 2017 Resident Wellness Consensus Summit (RWCS focused on wellness program innovations and initiatives in emergency medicine (EM residency programs. Methods: Over a seven-month period leading up to the RWCS event, the Programmatic Initiatives workgroup convened virtually in the Wellness Think Tank, an online, resident community consisting of 142 residents from 100 EM residencies in North America. A 15-person subgroup (13 residents, two faculty facilitators met at the RWCS to develop a public, central repository of initiatives for programs, as well as tools to assist programs in identifying gaps in their overarching wellness programs. Results: An online submission form and central database of wellness initiatives were created and accessible to the public. Wellness Think Tank members collected an initial 36 submissions for the database by the time of the RWCS event. Based on general workplace, needs-assessment tools on employee wellbeing and Kern’s model for curriculum development, a resident-based needs-assessment survey and an implementation worksheet were created to assist residency programs in wellness program development. Conclusion: The Programmatic Initiatives workgroup from the resident-driven RWCS event created tools to assist EM residency programs in identifying existing initiatives and gaps in their wellness programs to meet the ACGME’s expanded focus on resident wellbeing.

  20. The "resident's dilemma"? Values and strategies of medical residents for education interactions: a cellular automata simulation.

    Science.gov (United States)

    Heckerling, P S; Gerber, B S; Weiner, S J

    2006-01-01

    Medical residents engage in formal and informal education interactions with fellow residents during the working day, and can choose whether to spend time and effort on such interactions. Time and effort spent on such interactions can bring learning and personal satisfaction to residents, but may also delay completion of clinical work. Using hypothetical cases, we assessed the values and strategies of internal medicine residents at one hospital for both cooperative and non-cooperative education interactions with fellow residents. We then used these data and cellular automata models of two-person games to simulate repeated interactions between residents, and to determine which strategies resulted in greatest accrued value. We conducted sensitivity analyses on several model parameters, to test the robustness of dominant strategies to model assumptions. Twenty-nine of the 57 residents (50.9%) valued cooperation more than non-cooperation no matter what the other resident did during the current interaction. Similarly, thirty-six residents (63.2%) endorsed an unconditional always-cooperate strategy no matter what the other resident had done during their previous interaction. In simulations, an always-cooperate strategy accrued more value (776.42 value units) than an aggregate of strategies containing non-cooperation components (675.0 value units, p = 0.052). Only when the probability of strategy errors reached 50%, or when values were re-ordered to match those of a Prisoner's Dilemma, did non-cooperation-based strategies accrue the most value. Cooperation-based values and strategies were most frequent among our residents, and dominated in simulations of repeated education interactions between them.

  1. What is the Hallé? | Smith | Philosophical Papers

    African Journals Online (AJOL)

    I address what I call 'the number issue', which is raised by our ordinary talk and beliefs about certain social groups and institutions, and I take the Hallé orchestra as my example. The number issue is that of whether the Hallé is one individual or several individuals. I observe that if one holds that it is one individual, one faces ...

  2. Energy Spectrum and Quantum Hall Effect in Twisted Bilayer Graphene

    OpenAIRE

    Moon, Pilkyung; Koshino, Mikito

    2012-01-01

    We investigate the electronic spectra and quantum Hall effect in twisted bilayer graphenes with various rotation angles under magnetic fields, using a model rigorously including the interlayer interaction. We describe the spectral evolution from discrete Landau levels in the weak field regime to the fractal band structure in the strong field regime, and estimate the quantized Hall conductivity for each single gap. In weak magnetic fields, the low-energy conduction band of the twisted bilayer ...

  3. The Hall Effect in Hydrided Rare Earth Films

    Science.gov (United States)

    Koon, D. W.; Azofeifa, D. E.; Clark, N.

    We describe two new techniques for measuring the Hall effect in capped rare earth films during hydriding. In one, we simultaneously measure resistivity and the Hall coefficient for a rare earth film covered with four different thicknesses of Pd, recovering the charge transport quantities for both materials. In the second technique, we replace Pd with Mn as the covering layer. We will present results from both techniques.

  4. Spin and Isospin: Exotic Order in Quantum Hall Ferromagnets

    Science.gov (United States)

    Girvin, Steven M.

    Quantum mechanics is a strange business, and the quantum physics of strongly correlated many-electron systems can be stranger still. Good examples are the various quantum Hall effects. They are among the most remarkable many-body quantum phenomena discovered in the second half of the 20th century, comparable in intellectual import to superconductivity and superfluidity. The quantum Hall effects are an extremely rich set of phenomena with deep and truly fundamental theoretical implications...

  5. The Quantum Hall Effect: Novel Excitations and Broken Symmetries

    OpenAIRE

    Girvin, Steven M.

    1999-01-01

    These pedagogical lecture notes present a general introduction to most aspects of the integer and fractional quantum Hall effects. This is followed by an extensive discussion of quantum Hall ferromagnetism, both for spins in single-layer systems and `pseudospins' in double-layer systems. The effective field theories describing various broken symmetry states and `skyrmion' and `meron' spin textures are derived and discussed in some detail. Pedagogical presentations on Berry phases and lowest L...

  6. High-performance LED luminaire for sports hall

    Science.gov (United States)

    Lee, Xuan-Hao; Yang, Jin-Tsung; Chien, Wei-Ting; Chang, Jung-Hsuan; Lo, Yi-Chien; Lin, Che-Chu; Sun, Ching-Cherng

    2015-09-01

    In this paper, we present a luminaire design with anti-glare and energy-saving effects for sports hall. Compared with traditional lamps using in a badminton court, the average illuminance on the ground of the proposed LED luminaire is enhanced about 300%. Besides, the uniformity is obviously enhanced and improved. The switch-on speed of lighting in sports hall is greatly reduced from 5-10 minutes to 1 second. The simulation analysis and the corresponding experiment results are demonstrated.

  7. Project of industrial hall with a bridge crane

    OpenAIRE

    Ambrožič, Klemen

    2014-01-01

    In graduation thesis design of steel industrial hall with a bridge crane is performed. The first chapter contains technical report of the structure. Followed by the second chapter, which analyzes bridge crane and crane track. The influences of bridge crane are determined. These influences are considered for design of the crane track, fatigue check and displacements of the crane supporting structure. Fatigue check contains basic detail. The third chapter contains analysis of the hall supportin...

  8. Iodine Plasma Species Measurements in a Hall Effect Thruster Plume

    Science.gov (United States)

    2013-05-01

    from a 200 W Hall Effect Thruster fueled by iodine vapor was analyzed. The plasma source included a laboratory propellant feed system and a laboratory...distribution is unlimited Abstract • The plasma plume from a 200 W Hall Effect Thruster fueled by iodine vapor was analyzed. • The plasma source... pressure with I2 – Plume divergence lower with I2 – Dimers (I2+) measured at beam centroid (a few %) Iodine Xenon 7 Distribution A: Approved for public

  9. Anisotropic intrinsic spin Hall effect in quantum wires

    International Nuclear Information System (INIS)

    Cummings, A W; Akis, R; Ferry, D K

    2011-01-01

    We use numerical simulations to investigate the spin Hall effect in quantum wires in the presence of both Rashba and Dresselhaus spin-orbit coupling. We find that the intrinsic spin Hall effect is highly anisotropic with respect to the orientation of the wire, and that the nature of this anisotropy depends strongly on the electron density and the relative strengths of the Rashba and Dresselhaus spin-orbit couplings. In particular, at low densities, when only one subband of the quantum wire is occupied, the spin Hall effect is strongest for electron momentum along the [1-bar 10] axis, which is the opposite of what is expected for the purely 2D case. In addition, when more than one subband is occupied, the strength and anisotropy of the spin Hall effect can vary greatly over relatively small changes in electron density, which makes it difficult to predict which wire orientation will maximize the strength of the spin Hall effect. These results help to illuminate the role of quantum confinement in spin-orbit-coupled systems, and can serve as a guide for future experimental work on the use of quantum wires for spin-Hall-based spintronic applications. (paper)

  10. Spin Hall effect and spin swapping in diffusive superconductors

    Science.gov (United States)

    Espedal, Camilla; Lange, Peter; Sadjina, Severin; Mal'shukov, A. G.; Brataas, Arne

    2017-02-01

    We consider the spin-orbit-induced spin Hall effect and spin swapping in diffusive superconductors. By employing the nonequilibrium Keldysh Green's function technique in the quasiclassical approximation, we derive coupled transport equations for the spectral spin and particle distributions and for the energy density in the elastic scattering regime. We compute four contributions to the spin Hall conductivity, namely, skew scattering, side jump, anomalous velocity, and the Yafet contribution. The reduced density of states in the superconductor causes a renormalization of the spin Hall angle. We demonstrate that all four of these contributions to the spin Hall conductivity are renormalized in the same way in the superconducting state. In its simplest manifestation, spin swapping transforms a primary spin current into a secondary spin current with swapped current and polarization directions. We find that the spin-swapping coefficient is not explicitly but only implicitly affected by the superconducting gap through the renormalized diffusion coefficients. We discuss experimental consequences for measurements of the (inverse) spin Hall effect and spin swapping in four-terminal geometries. In our geometry, below the superconducting transition temperature, the spin-swapping signal is increased an order of magnitude while changes in the (inverse) spin Hall signal are moderate.

  11. Shear-driven Instabilities in Hall-magnetohydrodynamic Plasmas

    Science.gov (United States)

    Bejarano, Cecilia; Gómez, Daniel O.; Brandenburg, Axel

    2011-08-01

    The large-scale dynamics of plasmas is well described within the framework of magnetohydrodynamics (MHD). However, whenever the ion density of the plasma becomes sufficiently low, the Hall effect is likely to become important. The role of the Hall effect has been studied in several astrophysical plasma processes, such as magnetic reconnection, magnetic dynamo, MHD turbulence, or MHD instabilities. In particular, the development of small-scale instabilities is essential to understand the transport properties in a number of astrophysical plasmas. The magneto-rotational instability (MRI), which takes place in differentially rotating accretion disks embedded in relatively weak magnetic fields, is just one example. The influence of the large-scale velocity flows on small-scale instabilities is often approximated by a linear shear flow. In this paper, we quantitatively study the role of the Hall effect on plasmas embedded in large-scale shear flows. More precisely, we show that an instability develops when the Hall effect is present, which we therefore term as the Hall magneto-shear instability. As a particular case, we recover the so-called MRI and quantitatively assess the role of the Hall effect on its development and evolution.

  12. Electrostatic Probe with Shielded Probe Insulator Tube for Low Disturbing Plasma Measurements in Hall Thrusters

    International Nuclear Information System (INIS)

    Staack, D.; Raitses, Y.; Fisch, N.J.

    2003-01-01

    Electrostatic probes are widely used to measure spatial plasma parameters of the quasi-neutral plasma in Hall thrusters and similar ExB electric discharge devices. Significant perturbations of the plasma, induced by such probes, can mask the actual physics involved in operation of these devices. In Hall thrusters, probe-induced perturbations can produce changes in the discharge current and plasma parameters on the order of their steady state values. These perturbations are explored by varying the material, penetration distance, and residence time of various probe designs. A possible cause of these perturbations appears to be the secondary electron emission, induced by energetic plasma electrons, from insulator ceramic tubes in which the probe wire is inserted. A new probe in which a low secondary electron emission material, such as metal, shields the probe ceramic tube, is shown to function without producing such large perturbations. A segmentation of this shield further prevents probe -induced perturbations, by not shortening the plasma through the conductive shield. In a set of experiments with a segmented shield probe, the thruster was operated in the input power range of 500-2.5 kW and discharge voltages of 200-500 V, while the probe-induced perturbations of the discharge current were below 4% of its steady state value in the region in which 90% of the voltage drop takes place

  13. Zheng Manqing: The Memorial Hall and Legacy of the Master of Five Excellences in Taiwan

    Directory of Open Access Journals (Sweden)

    Russ Mason

    2012-07-01

    Full Text Available Professor Zheng Manqing (1902-1975, a fine artist and a notable taijiquan disciple of Yang Chengfu, emigrated to Taiwan in 1949 following the Chinese civil war between the Guomindang and Maoist factions. Under Republic of China President Chiang Kai-shek’s Cultural Renaissance Movement, Zheng played an important role in preserving the cultural treasures of traditional China. During the period of Mao Zedong’s Cultural Revolution when the Mainland was veiled to foreign eyes behind the Bamboo Curtain, Zheng was instrumental in introducing taijiquan and other elements of Chinese culture to the West. Zheng passed away at his home in Yonghe, Taiwan in 1975 but not before establishing an international reputation for his mastery in taijiquan and other arts. Recently, a portion of his former residence was converted into a memorial hall (the Zheng Manqing Jinian Guan by senior students interested in preserving his martial tradition, paintings, calligraphy, and other artifacts. This article provides a brief history of Zheng’s life and his legacy in Taiwan, as well as a photographic tour of the Zheng Manqing Memorial Hall.

  14. Observation of the Quantum Hall Effect in Confined Films of the Three-Dimensional Dirac Semimetal Cd3 As2

    Science.gov (United States)

    Schumann, Timo; Galletti, Luca; Kealhofer, David A.; Kim, Honggyu; Goyal, Manik; Stemmer, Susanne

    2018-01-01

    The magnetotransport properties of epitaxial films of Cd3 As2 , a paradigm three-dimensional Dirac semimetal, are investigated. We show that an energy gap opens in the bulk electronic states of sufficiently thin films and, at low temperatures, carriers residing in surface states dominate the electrical transport. The carriers in these states are sufficiently mobile to give rise to a quantized Hall effect. The sharp quantization demonstrates surface transport that is virtually free of parasitic bulk conduction and paves the way for novel quantum transport studies in this class of topological materials. Our results also demonstrate that heterostructuring approaches can be used to study and engineer quantum states in topological semimetals.

  15. Correlates of Burnout Among Family Practice Residents.

    Science.gov (United States)

    Lemkau, Jeanne P.; And Others

    1988-01-01

    A study of burnout among 67 residents in four programs found little relationship between burnout scores and situational and background factors, but numerous relationships were found among personality measures, burnout scores, and measures of regret about career choice, indicating the importance of interpersonal skills and comfort in mitigating…

  16. Research in Psychiatry: Residents' Attitudes and Use.

    Science.gov (United States)

    Hershberg, Richard I.; And Others

    1980-01-01

    Results of a survey are reported that sought to obtain information on the attitudes of psychiatric residents towards research, their backgrounds in research training, their assessment of their departments and their own personal research activities, and the role of psychiatric research in their future careers. (JMD)

  17. Neurosurgery resident leadership development: an innovative approach.

    Science.gov (United States)

    Pettit, Jeffrey E; Dahdaleh, Nader S; Albert, Gregory W; Greenlee, Jeremy D

    2011-02-01

    A great deal of time and resources go into the development and training of neurosurgeons. One area that has minimal literature and assessment is leadership development. Under the core competency of interpersonal and communication skills, the Accreditation Council for Graduate Medical Education has indicated that residents are expected to work effectively as a member or leader of a healthcare team. This article reveals how a structured leadership program was developed so that residents are better prepared for the role of chief resident and future leadership roles. Beginning in October 2006, residents attended a series of 1-hour workshops conducted monthly. Topics included leadership style, conflict management, effective feedback, team building, team leadership, motivation, and moving from peer to leader. A retrospective pretest was conducted at the end of the program. Residents reported a significant knowledge gain for the majority of topics. Resident comments indicated a greater awareness of the impact of leading and ways to improve their personal leadership. Quantitatively and qualitatively, residents and faculty reported that the leadership program made a significant impact on the development of future neurosurgical leaders.

  18. 24 CFR 982.606 - Congregate housing: Who may reside in congregate housing.

    Science.gov (United States)

    2010-04-01

    ... Special Housing Types Congregate Housing § 982.606 Congregate housing: Who may reside in congregate housing. (a) An elderly person or a person with disabilities may reside in a congregate housing unit. (b... person with disabilities. (2) The PHA must approve a live-in aide if needed as a reasonable accommodation...

  19. Habitat restoration/enhancement Fort Hall Reservation : 2001 annual report

    International Nuclear Information System (INIS)

    Moser, David C.

    2003-01-01

    Habitat enhancement, protection and monitoring were the focus of the Resident Fisheries Program during 2001. Enhancement and protection included sloping, fencing and planting willows at sites on Diggie Creek, Clear Creek and Spring Creek. In addition, many previously constructed instream structures (rock barbs and wing dams) were repaired throughout the Fort Hall Indian Reservation (Reservation). In 2001, exclosure fences were erected on Diggie Creek (250 m barbed wire; (70 m jack), Wood Creek (500 m jack), Clear Creek (20 m jack), Ross Fork Creek (200 m jack), West Fork Creek (200 m jack)) and the Portneuf River (1 km barbed wire; 100 m jack). Jack and rail exclosure fences that had deteriorated over the past ten years were repaired at numerous areas throughout the Reservation. Physical sampling during 2001 included sediment and depth surveys (SADMS) in Big Jimmy Creek and Diggie Creek. SADMS, used to track changes in channel morphology and specifically track movements of silt through Bottoms stream systems were completed for eight and nine strata in the Big Jimmy and Diggie Creek, respectively. Baseline SADM data was collected in Diggie Creek to monitor the effects of bank sloping and revegetation on channel morphology and sediment levels through time. Water temperature was monitored (hourly) in Spring Creek, Clear Creek, Ross Fork Creek and Big Jimmy Creek. Biotic sampling included invertebrate sampling in the 200 and 300 series of Clear Creek. Fish population densities and biomass were sampled in Clear Creek 200 and 300 series. Sampling protocols were identical to methods used in past years. Numbers of fish in Clear Creek 300 series remained similar to 2000 while numbers of fish in Clear Creek 200 series dropped to near pre project levels. Salmonid fry densities were monitored near Broncho Bridge and were significantly higher than 2000. A mark-recapture study was initiated in spring 2001 to estimate numbers of spawning adults using the Head End of Spring Creek

  20. Facebook Use between College Resident Advisors' and Their Residents: A Mixed Methods Approach.

    Science.gov (United States)

    Kacvinsky, Lauren E; Moreno, Megan A

    2014-01-01

    Facebook use is nearly ubiquitous among college students. Studies have shown links between Facebook displays of depression or problem drinking and risk of these problems. This project aimed to determine whether Facebook could be used to help Resident Advisors (RAs) identify college students at risk for depression or problem drinking. Interviews were conducted with college freshmen to investigate whether they were Facebook "friends" with their RA. Focus groups were conducted with RAs to determine their views on Facebook friending their dormitory residents and using Facebook to help identify at-risk students. 72 freshmen were interviewed and 25 RAs participated in focus groups; both agreed it is common for RAs and residents to be Facebook friends. RAs commonly noted references to depression and problem drinking on residents' Facebook pages, which often led to in-person discussions with the resident. This study provides support that RAs use Facebook to identify issues that may impact their student residents. RAs emphasized benefits of in-person interactions in order to provide support and obtain additional details about the situation. Universities could consider whether providing RA education about Facebook interactions with residents merits encouragement within their existing RA training programs.

  1. Rain Forest Dance Residency.

    Science.gov (United States)

    Watson, Dawn

    1997-01-01

    Outlines the author's experience as a dancer and choreographer artist-in-residence with third graders at a public elementary school, providing a cultural arts experience to tie in with a theme study of the rain forest. Details the residency and the insights she gained working with students, teachers, and theme. (SR)

  2. Estimates of the Legal Permanent Resident Population: 2011

    Data.gov (United States)

    Department of Homeland Security — This report presents estimates of the legal permanent resident (LPR) population living in the United States on January 1, 2011. The LPR population includes persons...

  3. U.S. Legal Permanent Residents: Fiscal Year 2006

    Data.gov (United States)

    Department of Homeland Security — Every year, hundreds of thousands of persons become legal permanent residents (LPRs) or “green card” recipients of the United States. LPRs, as defined by immigration...

  4. Sleep Practices of University Students Living in Residence

    Science.gov (United States)

    Qin, Pei; Brown, Cary A.

    2017-01-01

    Sleep plays an important role in both students' academic and personal life. Despite widespread sleep problems among young adults, few studies focus on higher education students living in campus residence. This study investigated residence-living students' sleep patterns, sleep promoting practices, sources of help seeking, and preferred ways to…

  5. Teaching the Surgical Craft: Surgery Residents Perception of the ...

    African Journals Online (AJOL)

    Teaching the Surgical Craft: Surgery Residents. Perception of the Operating Theater Educational ... theater. This study investigates the perceptions of residents about the educational environment of the operating theater and .... Mean score. My consultant has a pleasant personality. 4.18. I get on well with my consultant. 4.18.

  6. Residence as a Factor in Longevity: A Study of Louisianians.

    Science.gov (United States)

    Kwan, Yui-Huen; Bertrand, Alvin L.

    In order to test the hypothesis that the longevity of aged persons differs according to residence and by sex, race, and marital status, data from every third year between 1962 and 1974 in the Louisiana State Bureau of Vital Statistics were examined. Criteria for population inclusion were: people over 65 years of age; Louisiana residents at time of…

  7. 24 CFR 982.610 - Group home: Who may reside in a group home.

    Science.gov (United States)

    2010-04-01

    ... Housing Types Group Home § 982.610 Group home: Who may reside in a group home. (a) An elderly person or a person with disabilities may reside in a State-approved group home. (b)(1) If approved by the PHA, a live-in aide may reside with a person with disabilities. (2) The PHA must approve a live-in aide if needed...

  8. A psychological profile of surgeons and surgical residents.

    Science.gov (United States)

    Foster, Kevin N; Neidert, Gregory P M; Brubaker-Rimmer, Ruth; Artalejo, Diana; Caruso, Daniel M

    2010-01-01

    Approximately 20 percent of general surgery residents never complete their original residency programs. The psychological, programmatic, and financial costs for this attrition are substantial for both the residents, who spend valuable time and money pursuing incompatible career paths, and the residency programs, which also lose valuable time and money invested in these residents. There is a large amount of information in the field about the performance dimensions and skill sets of surgeons and surgical residents. To date, however, no research has been conducted on important process and content dimensions, which are critical in determining good person-job fit. A research team from the Department of Psychology at Arizona State University and Maricopa Medical Center conducted descriptive research to determine the work-related personality and interest variables of attending surgeons and surgical residents. Sixty-three surgical residents and 27 attending/teaching surgeons completed 2 sections (interests and personality scales) of the World of Work Inventory Online (WOWI Online). This multidimensional assessment was offered to all attending/teaching surgeons and surgical residents at Maricopa Medical Center. All members of the Department of Surgery participated in the trial. Based on the attending/teaching and high-performing resident profiles, a stable interest and personality profile emerged, which highlights the unique characteristics necessary to identify those who would be most satisfied with and suitable for work as surgeons. The profiles of the attending/teaching surgeons and the high-performing residents were similar. This contrasted with the interest and personality profiles of low-performing residents. The differences in the 2 groups' profiles provide insight into low performance and possible incompatibility with surgical residency, and possibly with general surgery as a profession choice. The WOWI Online assessment tool provides a stable profile of successful

  9. Program for developing leadership in pharmacy residents.

    Science.gov (United States)

    Fuller, Patrick D

    2012-07-15

    An innovative, structured approach to incorporating leadership development activities into pharmacy residency training is described. The American Society of Health-System Pharmacists (ASHP) has called for increased efforts to make leadership development an integral component of the training of pharmacy students and new practitioners. In 2007, The Nebraska Medical Center (TNMC) took action to systematize leadership training in its pharmacy residency programs by launching a new Leadership Development Series. Throughout the residency year, trainees at TNMC participate in a variety of activities: (1) focused group discussions of selected articles on leadership concepts written by noted leaders of the past and present, (2) a two-day offsite retreat featuring trust-building exercises and physical challenges, (3) a self-assessment designed to help residents identify and use their untapped personal strengths, (4) training on the effective application of different styles of communication and conflict resolution, and (5) education on the history and evolution of health-system pharmacy, including a review and discussion of lectures by recipients of ASHP's Harvey A. K. Whitney Award. Feedback from residents who have completed the series has been positive, with many residents indicating that it has stimulated their professional growth and helped prepared them for leadership roles. A structured Leadership Development Series exposes pharmacy residents to various leadership philosophies and principles and, through the study of Harvey A. K. Whitney Award lectures, to the thoughts of past and present pharmacy leaders. Residents develop an increased self-awareness through a resident fall retreat, a StrengthsFinder assessment, and communication and conflict-mode assessment tools.

  10. Seville City Hall Chapter Room ceiling decoration

    Directory of Open Access Journals (Sweden)

    Robador, M. D.

    2010-02-01

    Full Text Available The present article describes a chemical and physical study of the colour, chemical composition and mineral phases of the decorative materials in the Seville City Hall Chapter House ceiling. The findings showed that the inner most layer of material, calcite, was covered with white lead, in turn concealed under a layer of gilded bole. The ceiling underwent re-gilding, also over bole, due in all likelihood to wear on the original gold leaf. In the nineteenth century, the entire ceiling with the exception of the inscriptions was whitewashed with calcite and white lead. Silver was employed on King John I’s sword (coffer 27. Gold leaf was used to adorn the royal attributes: crowns, belts, sceptres, swords and rosary beads. The high reliefs were likewise gilded. The pigments identified on the ceiling adornments included azurite, malachite, vermilion and gas black. A lime and ground dolomite mortar was used throughout.

    El objetivo de este trabajo es el estudio de diferentes aspectos, como el color, la composición química y las fases mineralógicas presentes en los diferentes materiales que forman la ornamentación del techo de la Sala Capitular del Ayuntamiento de Sevilla, mediante métodos físicos y químicos. Nuestros resultados muestran que el dorado fue realizado sobre una capa de bol previamente depositada sobre una lámina de blanco de plomo que cubría un estrato de calcita. Posteriormente, y probablemente debido a alteraciones en el dorado original, el techo fue de nuevo dorado usando una técnica similar. En el siglo XIX, casi todo el techo, excepto las zonas con inscripciones, fue blanqueado usando una mezcla de calcita y blanco de plomo. Se empleó plata para cubrir la espada del rey Juan I (casetón 27. Finísimas láminas de oro se usaron para decorar los atributos reales: coronas, cinturones, cetros, espadas y rosarios. En diferentes partes de la decoración fueron detectados pigmentos como azurita, malaquita, bermellón y

  11. Concert halls with strong lateral reflections enhance musical dynamics.

    Science.gov (United States)

    Pätynen, Jukka; Tervo, Sakari; Robinson, Philip W; Lokki, Tapio

    2014-03-25

    One of the most thrilling cultural experiences is to hear live symphony-orchestra music build up from a whispering passage to a monumental fortissimo. The impact of such a crescendo has been thought to depend only on the musicians' skill, but here we show that interactions between the concert-hall acoustics and listeners' hearing also play a major role in musical dynamics. These interactions contribute to the shoebox-type concert hall's established success, but little prior research has been devoted to dynamic expression in this three-part transmission chain as a complete system. More forceful orchestral playing disproportionately excites high frequency harmonics more than those near the note's fundamental. This effect results in not only more sound energy, but also a different tone color. The concert hall transmits this sound, and the room geometry defines from which directions acoustic reflections arrive at the listener. Binaural directional hearing emphasizes high frequencies more when sound arrives from the sides of the head rather than from the median plane. Simultaneously, these same frequencies are emphasized by higher orchestral-playing dynamics. When the room geometry provides reflections from these directions, the perceived dynamic range is enhanced. Current room-acoustic evaluation methods assume linear behavior and thus neglect this effect. The hypothesis presented here is that the auditory excitation by reflections is emphasized with an orchestra forte most in concert halls with strong lateral reflections. The enhanced dynamic range provides an explanation for the success of rectangularly shaped concert-hall geometry.

  12. NASA HERMeS Hall Thruster Electrical Configuration Characterization

    Science.gov (United States)

    Peterson, Peter Y.; Kamhawi, Hani; Huang, Wensheng; Yim, John; Herman, Daniel; Williams, George; Gilland, James; Hofer, Richard

    2015-01-01

    The NASA Hall Effect Rocket with Magnetic Shielding (HERMeS) 12.5 kW Technology Demonstration Unit-1 (TDU-1) Hall thruster has been the subject of extensive technology maturation in preparation for development into a flight ready propulsion system. Part of the technology maturation was to test the TDU-1 thruster in several ground based electrical configurations to assess the thruster robustness and suitability to successful in-space operation. The ground based electrical configuration testing has recently been demonstrated as an important step in understanding and assessing how a Hall thruster may operate differently in-space compared to ground based testing, and to determine the best configuration to conduct development and qualification testing. This paper describes the electrical configuration testing of the HERMeS TDU-1 Hall thruster in NASA Glenn Research Center's Vacuum Facility 5. The three electrical configurations examined were 1) thruster body tied to facility ground, 2) thruster floating, and 3) thruster body electrically tied to cathode common. The HERMeS TDU-1 Hall thruster was also configured with two different exit plane boundary conditions, dielectric and conducting, to examine the influence on the electrical configuration characterization.

  13. G. Stanley Hall, Child Study, and the American Public.

    Science.gov (United States)

    Young, Jacy L

    2016-01-01

    In the final decades of the 19th century psychologist Granville Stanley Hall was among the most prominent pedagogical experts in the nation. The author explores Hall's carefully crafted persona as an educational expert, and his engagements with the American public, from 1880 to 1900, arguably the height of his influence. Drawing from accounts of Hall's lecture circuit in the popular press, a map of his talks across the nation is constructed to assess the geographic scope of his influence. These talks to educators on the psychology underlying childhood and pedagogy, and his views and research on child life more generally, were regularly discussed in newspapers and popular periodicals. The venues in which Hall's ideas were disseminated, discussed, and in some cases, dismissed are described. His efforts to mobilize popular support for, and assistance with, his research endeavors in child study are also discussed. Such efforts were controversial both within the burgeoning field of psychology and among the public. Through his various involvements in pedagogy, and concerted efforts to engage with the American public, Hall helped establish psychology's relevance to parenting and educational practices.

  14. Development of an access control system for the LHD experimental hall

    International Nuclear Information System (INIS)

    Kawano, T.; Inoue, N.; Sakuma, Y.; Uda, T.; Yamanishi, H.; Miyake, H.; Tanahashi, S.; Motozima, O.

    2000-01-01

    An access control system for the LHD (Large Helical Device) experimental hall had been constructed and its practical operation started in March 1998. Continuously, the system has been improved. The present system keeps watch on involved entrance and exit for the use of persons at four entrances by using five turnstile gates while watching on eight shielding doors at eight positions (four entrances, three carriage entrances and a hall overview) and a stairway connecting the LHD main hall with the LHD basement. Besides, for the security of safety operation of the LHD, fifteen kinds of interlock signals are exchanged between the access control system and the LHD control system. Seven of the interlock signals are properly sent as the occasional demands from the access control system to the LHD control system, in which three staple signals are B Personnel Access to Controlled Area, D Shielding Door Closed, and E No Entrance. It is important that any plasma experiments of the LHD are not permitted while the signal B being sent or D being not sent. The signal E is sent to inform the LHD control system that the turnstile gates are locked. All the plasma experiments should not be done unless the lock procedure of the turnstile is confirmed. When the turnstile gates are locked, any persons cannot enter into the LHD controlled area, but are permissible to exit only. Six of the interlock signals are used to send the information of the working at that time in the LHD controlled area to the access control system. When one signal of the operation mode is sent to the access control system from the LHD, the access control system sets the turnstile gate in situation corresponding to the operation mode, A Equipment Operation, B Vacuum Pumping, C Coil Cooling, D Coil Excitation, and E Plasma Experiment. If the access control system receives, for example, the signal B, this system sets the turnstile gate in the condition of control such that only persons assigned to the work of vacuum

  15. Residents in difficulty

    DEFF Research Database (Denmark)

    Christensen, Mette Krogh; O'Neill, Lotte; Hansen, Dorthe Høgh

    2016-01-01

    Background The majority of studies on prevalence and characteristics of residents in difficulty have been conducted in English-speaking countries and the existing literature may not reflect the prevalence and characteristics of residents in difficulty in other parts of the world such as the Scand......Background The majority of studies on prevalence and characteristics of residents in difficulty have been conducted in English-speaking countries and the existing literature may not reflect the prevalence and characteristics of residents in difficulty in other parts of the world...... such as the Scandinavian countries, where healthcare systems are slightly different. The aim of this study was to examine prevalence and characteristics of residents in difficulty in one out of three postgraduate medical training regions in Denmark, and to produce both a quantifiable overview and in-depth understanding...... of the topic. Methods We performed a mixed methods study. All regional residency program directors (N = 157) were invited to participate in an e-survey about residents in difficulty. Survey data were combined with database data on demographical characteristics of the background population (N = 2399...

  16. Kertha Gosa Court Hall of Klungkung Bali as an effort to conserve cultural heritage based on traditional culture

    Science.gov (United States)

    Kurnia Widianti, An-nisaa; Bambang Studyanto, Anung

    2018-03-01

    Kertha Gosa Klungkung Court Hall in Bali is one of the relics of the cultural heritage of The Kingdom of Bali which is a part of the Klungkung Castle. The existence of Kertha Gosa Architecture Hall as one of the relics of cultural heritage holds historical values, especially Bali traditional values. Indonesia is a country which has the rich culture heritage history, especially on historical buildings. This research seeks for a redenomination to solve problems being faced recently, namely the lack of activities to conserve a historic building as an asset of the country and source of knowledge in education. Listed in Law Number 11 of 2010 the conservation has some criteria, such as : 1.it has 50 years or more; represents the period of a certain style lat least 50 years; has special meaning for the history, science, education, religion, and culture or cultural value as a nation’s personality. The procedure to conduct this research uses a descriptive method by doing observation, interviews, taking some pictures, official documents or personal and other data that have a relevance to the research related to object to describing the condition of the building systematically, factual and actual. Consideration of the selection of objects is based on research by looking at the criteria of architectural, historical and symbolic criteria. Kertha Gosa Hall classic has been there for 395 years was built with zoning system called Sanga Mandala or similar to a chess board using natural materials such as eben wood, and padas rocks which make it authentic and possesses characteristic values of patriotism expression. During the kingdom of Kertha Gosa, Court Hall was like a court nowadays, but people still trust the constructive value of Hindu religion and culture as a product of thinking and live experience.

  17. Diaphragm Effect of Steel Space Roof Systems in Hall Structures

    Directory of Open Access Journals (Sweden)

    Mehmet FENKLİ

    2015-09-01

    Full Text Available Hall structures have been used widely for different purposes. They have are reinforced concrete frames and shear wall with steel space roof systems. Earthquake response of hall structures is different from building type structures. One of the most critical nodes is diaphragm effect of steel space roof on earthquake response of hall structures. Diaphragm effect is depending on lateral stiffness capacity of steel space roof system. Lateral stiffness of steel space roof system is related to modulation geometry, support conditions, selected sections and system geometry. In current paper, three representative models which are commonly used in Turkey were taken in to account for investigation. Results of numerical tests were present comparatively

  18. Admittance of multiterminal quantum Hall conductors at kilohertz frequencies

    International Nuclear Information System (INIS)

    Hernández, C.; Consejo, C.; Chaubet, C.; Degiovanni, P.

    2014-01-01

    We present an experimental study of the low frequency admittance of quantum Hall conductors in the [100 Hz, 1 MHz] frequency range. We show that the frequency dependence of the admittance of the sample strongly depends on the topology of the contacts connections. Our experimental results are well explained within the Christen and Büttiker approach for finite frequency transport in quantum Hall edge channels taking into account the influence of the coaxial cables capacitance. In the Hall bar geometry, we demonstrate that there exists a configuration in which the cable capacitance does not influence the admittance measurement of the sample. In this case, we measure the electrochemical capacitance of the sample and observe its dependence on the filling factor

  19. Admittance of multiterminal quantum Hall conductors at kilohertz frequencies

    Energy Technology Data Exchange (ETDEWEB)

    Hernández, C. [Departamento de Física, Universidad Militar Nueva Granada, Carrera 11 101-80 Bogotá D.C. (Colombia); Consejo, C.; Chaubet, C., E-mail: christophe.chaubet@univ-montp2.fr [Université Montpellier 2, Laboratoire Charles Coulomb UMR5221, F-34095 Montpellier, France and CNRS, Laboratoire Charles Coulomb UMR5221, F-34095 Montpellier (France); Degiovanni, P. [Université de Lyon, Fédération de Physique Andrée Marie Ampère, CNRS, Laboratoire de Physique de l' Ecole Normale Supérieure de Lyon, 46 allée d' Italie, 69364 Lyon Cedex 07 (France)

    2014-03-28

    We present an experimental study of the low frequency admittance of quantum Hall conductors in the [100 Hz, 1 MHz] frequency range. We show that the frequency dependence of the admittance of the sample strongly depends on the topology of the contacts connections. Our experimental results are well explained within the Christen and Büttiker approach for finite frequency transport in quantum Hall edge channels taking into account the influence of the coaxial cables capacitance. In the Hall bar geometry, we demonstrate that there exists a configuration in which the cable capacitance does not influence the admittance measurement of the sample. In this case, we measure the electrochemical capacitance of the sample and observe its dependence on the filling factor.

  20. Crossover between spin swapping and Hall effect in disordered systems

    KAUST Repository

    Saidaoui, Hamed Ben Mohamed

    2015-07-16

    We theoretically study the crossover between spin Hall effect and spin swapping, a recently predicted phenomenon that consists of the interchange between the current flow and its spin polarization directions [M. B. Lifshits and M. I. Dyakonov, Phys. Rev. Lett. 103, 186601 (2009)]. Using a tight-binding model with spin-orbit coupled disorder, spin Hall effect, spin relaxation, and spin swapping are treated on equal footing. We demonstrate that spin swapping and spin Hall effect present very different dependencies as a function of the spin-orbit coupling and disorder strengths and confirm that the former exceeds the latter in the parameter range considered. Three setups are proposed for the experimental observation of the spin swapping effect.

  1. Modular invariance, universality and crossover in the quantum Hall effect

    International Nuclear Information System (INIS)

    Dolan, Brian P.

    1999-01-01

    An analytic form for the conductivity tensor in crossover between two quantum Hall plateaux is derived, which appears to be in good agreement with existing experimental data. The derivation relies on an assumed symmetry between quantum Hall states, a generalisation of the law of corresponding states from rational filling factors to complex conductivity, which has a mathematical expression in terms of an action of the modular group on the upper-half complex conductivity plane. This symmetry implies universality in quantum Hall crossovers. The assumption that the β-function for the complex conductivity is a complex analytic function, together with some experimental constraints, results in an analytic expression for the crossover, as a function of the external magnetic field

  2. Topological Phase Transitions in the Photonic Spin Hall Effect

    Science.gov (United States)

    Kort-Kamp, W. J. M.

    2017-10-01

    The recent synthesis of two-dimensional staggered materials opens up burgeoning opportunities to study optical spin-orbit interactions in semiconducting Dirac-like systems. We unveil topological phase transitions in the photonic spin Hall effect in the graphene family materials. It is shown that an external static electric field and a high frequency circularly polarized laser allow for active on-demand manipulation of electromagnetic beam shifts. The spin Hall effect of light presents a rich dependence with radiation degrees of freedom, and material properties, and features nontrivial topological properties. We discover that photonic Hall shifts are sensitive to spin and valley properties of the charge carriers, providing an unprecedented pathway to investigate spintronics and valleytronics in staggered 2D semiconductors.

  3. Overview of NASA Iodine Hall Thruster Propulsion System Development

    Science.gov (United States)

    Smith, Timothy D.; Kamhawi, Hani; Hickman, Tyler; Haag, Thomas; Dankanich, John; Polzin, Kurt; Byrne, Lawrence; Szabo, James

    2016-01-01

    NASA is continuing to invest in advancing Hall thruster technologies for implementation in commercial and government missions. The most recent focus has been on increasing the power level for large-scale exploration applications. However, there has also been a similar push to examine applications of electric propulsion for small spacecraft in the range of 300 kg or less. There have been several recent iodine Hall propulsion system development activities performed by the team of the NASA Glenn Research Center, the NASA Marshall Space Flight Center, and Busek Co. Inc. In particular, the work focused on qualification of the Busek 200-W BHT-200-I and development of the 600-W BHT-600-I systems. This paper discusses the current status of iodine Hall propulsion system developments along with supporting technology development efforts.

  4. Hall effect in a strong magnetic field: Direct comparisons of compressible magnetohydrodynamics and the reduced Hall magnetohydrodynamic equations

    International Nuclear Information System (INIS)

    Martin, L. N.; Dmitruk, P.; Gomez, D. O.

    2010-01-01

    In this work we numerically test a model of Hall magnetohydrodynamics in the presence of a strong mean magnetic field: the reduced Hall magnetohydrodynamic model (RHMHD) derived by [Gomez et al., Phys. Plasmas 15, 102303 (2008)] with the addition of weak compressible effects. The main advantage of this model lies in the reduction of computational cost. Nevertheless, up until now the degree of agreement with the original Hall MHD system and the range of validity in a regime of turbulence were not established. In this work direct numerical simulations of three-dimensional Hall MHD turbulence in the presence of a strong mean magnetic field are compared with simulations of the weak compressible RHMHD model. The results show that the degree of agreement is very high (when the different assumptions of RHMHD, such as spectral anisotropy, are satisfied). Nevertheless, when the initial conditions are isotropic but the mean magnetic field is maintained strong, the results differ at the beginning but asymptotically reach a good agreement at relatively short times. We also found evidence that the compressibility still plays a role in the dynamics of these systems, and the weak compressible RHMHD model is able to capture these effects. In conclusion the weak compressible RHMHD model is a valid approximation of the Hall MHD turbulence in the relevant physical context.

  5. Life in a university residence: Issues, concerns and responses.

    Science.gov (United States)

    Shaikh, Babar T; Deschamps, Jean-Pierre

    2006-03-01

    Students living in university residences experience frail living conditions, being away from their homes and families, the stress of studies, a bizarre routine, and absence of readily available guidance. Their overall health suffers. Our study aims at collecting information on health and related problems of the students in university residences and to identify the solutions to ameliorate the prevailing situation. A qualitative study conducted in five university residences of Nancy, Metz and Strasbourg, France. The majority of students have complaints about the living conditions in the residences. They mention that they are not in sound health. Stress, depression, fatigue, insomnia, and problems with diet are common. Foreign students suffer more due to culture shock, language, and nostalgia. A tendency for suicides has been observed, especially in girls. Financial problems, too much to study, and relationship break-up are important factors. For their health problems, they generally seek advice from a peer and consume medicines without prescription. Many do not use the "students' health service" because of lack of information or difficult access from certain universities or university residences. To solve their problems and to facilitate their social integration, student volunteers ought to be trained in the university residences because a majority prefers to have their peers' advice. Reinforcement of the role of administration of residences, of student-counselors and of the faculty in the university would be another crucial step. More leisure and social activities are imperative. This study itself constitutes the first element of creating awareness regarding the situation of the health of students living in residence halls in France.

  6. Complex dynamics of the integer quantum Hall effect

    International Nuclear Information System (INIS)

    Trugman, S.A.; Nicopoulos, V.N.; Florida Univ., Gainesville, FL

    1991-01-01

    We investigate both classical and quantum potential scattering in two dimensions in a magnetic field, with applications to the integer quantum Hall effect. Classical scattering is complex, due in one case to the approach of scattering states to an infinite number of bound states. We show that bound states are generic, and occur for all but extremely smooth scattering potentials (|rvec ∇| → 0). Quantum scattering follows the classical behavior rather closely, exhibiting sharp resonances rather than classical bound states. Extended scatterers provide an explanation for the breakdown of the QHE at a comparatively small Hall voltage. 16 refs., 14 figs

  7. Semiclassical droplet states in matrix quantum Hall effect

    International Nuclear Information System (INIS)

    Cappelli, Andrea; Rodriguez, Ivan D.

    2008-01-01

    We derive semiclassical ground state solutions that correspond to the quantum Hall states earlier found in the Maxwell-Chern-Simons matrix theory. They realize the Jain composite-fermion construction and their density is piecewise constant as that of phenomenological wave functions. These results support the matrix theory as a possible effective theory of the fractional Hall effect. A crucial role is played by the constraint limiting the degeneracy of matrix states: we find its explicit gauge invariant form and clarify its physical interpretation

  8. Spin-Hall nano-oscillator: A micromagnetic study

    Energy Technology Data Exchange (ETDEWEB)

    Giordano, A.; Azzerboni, B.; Finocchio, G. [Department of Electronic Engineering, Industrial Chemistry and Engineering, University of Messina, C.da di Dio, I-98166 Messina (Italy); Carpentieri, M. [Department of Electrical and Information Engineering, Politecnico of Bari, via E. Orabona 4, I-70125 Bari (Italy); Laudani, A. [Department of Engineering, University of Roma Tre, via V. Volterra 62, I-00146 Roma (Italy); Gubbiotti, G. [Istituto Officina dei Materiali del CNR (CNR-IOM), Unità di Perugia c/o Dipartimento di Fisica e Geologia, Via A. Pascoli, 06123 Perugia (Italy)

    2014-07-28

    This Letter studies the dynamical behavior of spin-Hall nanoscillators from a micromagnetic point of view. The model parameters have been identified by reproducing recent experimental data quantitatively. Our results indicate that a strongly localized mode is observed for in-plane bias fields such as in the experiments, while predict the excitation of an asymmetric propagating mode for large enough out-of plane bias field similarly to what observed in spin-torque nanocontact oscillators. Our findings show that spin-Hall nanoscillators can find application as spin-wave emitters for magnonic applications where spin waves are used for transmission and processing information on nanoscale.

  9. Resistive and Hall weighting functions in three dimensions

    Science.gov (United States)

    Koon, D. W.; Knickerbocker, C. J.

    1998-10-01

    The authors extend their study of the effect of macroscopic impurities on resistive and Hall measurements to include objects of finite thickness. The effect of such impurities is calculated for a series of rectangular parallelepipeds with two current and two voltage contacts on the corners of one square face. The weighting functions display singularities near these contacts, but these are shown to vanish in the two-dimensional limit, in agreement with previous results. Finally, it is shown that while Hall measurements principally sample the plane of the electrodes, resistivity measurements sample more of the interior of an object of finite thickness.

  10. Theory of the quantized Hall effect. Pt. 3

    International Nuclear Information System (INIS)

    Levine, H.; Pruisken, A.M.M.; Libby, S.B.

    1984-01-01

    In the previous paper, we have demonstrated the need for a phase transition as a function of theta in the non-liner sigma-model describing the quantized Hall effect. In this work, we present arguments for the occurrence of exactly such a transition. We make use of a dilute gas instanton approximation as well as present a more rigorous duality argument to show that the usual scaling of the conductivity to zero at large distances is altered whenever sigmasub(xy)sup((0)) approx.= 1/2ne 2 /h, n integer. This then completes our theory of the quantized Hall effect. (orig.)

  11. Complex scattering dynamics and the quantum Hall effects

    International Nuclear Information System (INIS)

    Trugman, S.A.

    1994-01-01

    We review both classical and quantum potential scattering in two dimensions in a magnetic field, with applications to the quantum Hall effect. Classical scattering is complex, due to the approach of scattering states to an infinite number of dynamically bound states. Quantum scattering follows the classical behavior rather closely, exhibiting sharp resonances in place of the classical bound states. Extended scatterers provide a quantitative explanation for the breakdown of the QHE at a comparatively small Hall voltage as seen by Kawaji et al., and possibly for noise effects

  12. Quantum Hall ferromagnetism in II-VI based alloys

    Science.gov (United States)

    Jaroszyski, J.; Andrearczyk, T.; Karczewski, G.; Wróbel, J.; Wojtowicz, T.; Papis, E.; Kamiska, E.; Piotrowska, A.; Popovi, Dragana; Dietl, T.

    2004-02-01

    The article reviews our recent studies on quantum Hall ferromagnetism (QHF) in diluted magnetic semiconductors. We carried out magnetoresistance studies on modulation-doped, gated heterostructures of (Cd,Mn)Te/(Cd,Mg)Te:I.We put into evidence the formation of Ising quantum Hall ferromagnet with Curie temperature TC as high as 2 K. QHF is manifested by anomalous magnetoresistance maxima. Moreover, magnitude of these spikes depends dramatically on the history of the sample, shows hysteresis when either magnetic field or gate voltage are swept, stretched-exponential time evolution characteristic of glassy systems, and strong Barkhausen noise. Our study suggests that these metastabilities stem from the slow dynamics of ferromagnetic domains.

  13. Spin Hall magnetoresistance in antiferromagnet/normal metal bilayers

    KAUST Repository

    Manchon, Aurelien

    2017-01-01

    We investigate the emergence of spin Hall magnetoresistance in a magnetic bilayer composed of a normal metal adjacent to an antiferromagnet. Based on a recently derived drift diffusion equation, we show that the resistance of the bilayer depends on the relative angle between the direction transverse to the current flow and the Néel order parameter. While this effect presents striking similarities with the spin Hall magnetoresistance recently reported in ferromagnetic bilayers, its physical origin is attributed to the anisotropic spin relaxation of itinerant spins in the antiferromagnet.

  14. Inverse spin Hall effect in Pt/(Ga,Mn)As

    Science.gov (United States)

    Nakayama, H.; Chen, L.; Chang, H. W.; Ohno, H.; Matsukura, F.

    2015-06-01

    We investigate dc voltages under ferromagnetic resonance in a Pt/(Ga,Mn)As bilayer structure. A part of the observed dc voltage is shown to originate from the inverse spin Hall effect. The sign of the inverse spin Hall voltage is the same as that in Py/Pt bilayer structure, even though the stacking order of ferromagnetic and nonmagnetic layers is opposite to each other. The spin mixing conductance at the Pt/(Ga,Mn)As interface is determined to be of the order of 1019 m-2, which is about ten times greater than that of (Ga,Mn)As/p-GaAs.

  15. Magnetoresistance and Hall resistivity of semimetal WTe2 ultrathin flakes.

    Science.gov (United States)

    Luo, Xin; Fang, Chi; Wan, Caihua; Cai, Jialin; Liu, Yong; Han, Xiufeng; Lu, Zhihong; Shi, Wenhua; Xiong, Rui; Zeng, Zhongming

    2017-04-07

    This article reports the characterization of WTe 2 thin flake magnetoresistance and Hall resistivity. We found it does not exhibit magnetoresistance saturation when subject to high fields, in a manner similar to their bulk characteristics. The linearity of Hall resistivity in our devices confirms the compensation of electrons and holes. By relating experimental results to a classic two-band model, the lower magnetoresistance values in our samples is demonstrated to be caused by decreased carrier mobility. The dependence of mobility on temperature indicates the main role of optical phonon scattering at high temperatures. Our results provide more detailed information on carrier behavior and scattering mechanisms in WTe 2 thin films.

  16. Wind tunnel tests of tent halls of different shape

    Directory of Open Access Journals (Sweden)

    Porowska Agnieszka

    2017-01-01

    Full Text Available Aerodynamic investigations of wind pressure distribution on the surfaces of models of tent halls were carried out in the boundary layer wind tunnel at the Cracow University of Technology. Four types of objects of different shapes and construction were tested. Although tent halls are significantly vulnerable with respect to the wind action, there is no information about pressure distribution on objects of such type in standards, codes and normalization documents. Obtained results indicate that it is necessary to take into account different configurations of wind action while designing of the analysed structures.

  17. Theory of spin Hall effect: extension of the Drude model.

    Science.gov (United States)

    Chudnovsky, Eugene M

    2007-11-16

    An extension of the Drude model is proposed that accounts for the spin and spin-orbit interaction of charge carriers. Spin currents appear due to the combined action of the external electric field, crystal field, and scattering of charge carriers. The expression for the spin Hall conductivity is derived for metals and semiconductors that is independent of the scattering mechanism. In cubic metals, the spin Hall conductivity sigma s and charge conductivity sigma c are related through sigma s=[2pi variant /(3mc2)]sigma2c with m being the bare electron mass. The theoretically computed value is in agreement with experiment.

  18. Impact of external conditions on energy consumption in industrial halls

    Science.gov (United States)

    Żabnieńśka-Góra, Alina

    2017-11-01

    The energy demand for heating the halls buildings is high. The impact on this may have the technology of production, building construction and technology requirements (HVAC systems). The isolation of the external partitions, the location of the object in relation to the surrounding buildings and the degree of the interior insolation (windows and skylights) are important in the context of energy consumption. The article discusses the impact of external conditions, wind and sunlight on energy demand in the industrial hall. The building model was prepared in IDA ICE 4.0 simulation software. Model validation was done based on measurements taken in the analyzed building.

  19. Enhanced thermoelectric response in the fractional quantum Hall effect

    Science.gov (United States)

    Roura-Bas, Pablo; Arrachea, Liliana; Fradkin, Eduardo

    2018-02-01

    We study the linear thermoelectric response of a quantum dot embedded in a constriction of a quantum Hall bar with fractional filling factors ν =1 /m within Laughlin series. We calculate the figure of merit Z T for the maximum efficiency at a fixed temperature difference. We find a significant enhancement of this quantity in the fractional filling in relation to the integer-filling case, which is a direct consequence of the fractionalization of the electron in the fractional quantum Hall state. We present simple theoretical expressions for the Onsager coefficients at low temperatures, which explicitly show that Z T and the Seebeck coefficient increase with m .

  20. The Needless Detention of Immigrants in the United States: Why Are We Locking up Asylum Seekers, Children, Stateless Persons, Long-Term Permanent Residents, and Petty Offenders? Report 4.

    Science.gov (United States)

    United States Catholic Conference, Washington, DC. Catholic Legal Immigration Network, Inc.

    This report focuses on "at risk" immigrants in the United States. This fourth report in a series contributes to the now extensive literature on the suffering caused by the INS detention system, with a particular focus on persons who should not be detained, and the INS's failure to pursue alternatives for groups that it should not and need not…

  1. Methods and instrumentation for investigating Hall sensors during their irradiation in nuclear research reactors

    International Nuclear Information System (INIS)

    Bolshakova, I.; Holyaka, R.; Makido, E.; Marusenkov, A.; Shurygin, F.; Yerashok, V.; Moreau, P. J.; Vayakis, G.; Duran, I.; Stockel, J.; Chekanov, V.; Konopleva, R.; Nazarkin, I.; Kulikov, S.; Leroy, C.

    2009-01-01

    Present work discusses the issues of creating the instrumentation for testing the semiconductor magnetic field sensors during their irradiation with neutrons in nuclear reactors up to fluences similar to neutron fluences in steady-state sensor locations in ITER. The novelty of the work consists in Hall sensor parameters being investigated: first, directly during the irradiation (in real time), and, second, at high irradiation levels (fast neutron fluence > 10 18 n/cm 2 ). Developed instrumentation has been successfully tested and applied in the research experiments on radiation stability of magnetic sensors in IBR-2 (JINR, Dubna) and VVR-M (PNPI, Saint-Petersburg) reactors. The 'Remote-Rad' bench consists of 2 heads (head 1 and head 2) bearing investigated sensors put in a ceramic setting, of electronic unit, of personal computer and of signal lines. Each head contains 6 Hall sensors and a coil for generating test magnetic field. Moreover head 1 contains thermocouples for temperature measurement while the temperature of head 2 is measured by thermo-resistive method. The heads are placed in the reactor channel

  2. Design and development of DC high current sensor using Hall-Effect method

    Science.gov (United States)

    Dewi, Sasti Dwi Tungga; Panatarani, C.; Joni, I. Made

    2016-02-01

    This paper report a newly developed high DC current sensor by using a Hall effect method and also the measurement system. The Hall effect sensor receive the magnetic field generated by a current carrying conductor wire. The SS49E (Honeywell) magnetoresistive sensor was employed to sense the magnetic field from the field concentrator. The voltage received from SS49E then converted into digital by using analog to digital converter (ADC-10 bit). The digital data then processed in the microcontroller to be displayed as the value of the electric current in the LCD display. In addition the measurement was interfaced into Personal Computer (PC) using the communication protocols of RS232 which was finally displayed in real-time graphical form on the PC display. The performance test on the range ± 40 Ampere showed that the maximum relative error is 5.26%. It is concluded that the sensors and the measurement system worked properly according to the design with acceptable accuracy.

  3. Atypical presentation of scabies among nursing home residents.

    Science.gov (United States)

    Wilson, M M; Philpott, C D; Breer, W A

    2001-07-01

    Scabies epidemics are not uncommon in nursing homes. Effective treatment is enhanced by prompt clinical diagnosis and early intervention. The clinical presentation of scabies may vary in older, immunocompromised or cognitively impaired persons. We performed a retrospective study of all residents diagnosed with scabies in a multilevel long-term care geriatric facility. The duration of the outbreak was from May to September 2000. Fifteen residents contracted scabies during the outbreak. All affected residents had predominantly truncal lesions. Twelve residents had diffuse erythematous, papulosquamous lesions. Pruritus occurred in only 5 residents. Three residents with severe dementia and notably impaired functional status failed to respond to Permethrin cream (5%). All 3 residents responded to treatment with oral Ivermectin. Older nursing home residents with scabies may present with atypical skin lesions. Residents with cognitive impairment and restricted mobility may be treatment resistant. The diagnosis of scabies should be considered in any nursing home resident with an unexplained generalized rash. Residents with dementia and severe functional impairment that fail to respond to Permethrin cream (5%) may benefit from treatment with oral Ivermectin.

  4. Satisfaction among residents in ASHP-accredited pharmacy residency programs.

    Science.gov (United States)

    VanDenBerg, C; Murphy, J E

    1997-07-01

    The level of work satisfaction among pharmacists in ASHP-accredited residencies was studied. In March 1996 a questionnaire designed to measure residency satisfaction was mailed to 697 individuals in ASHP-accredited pharmacy practice and specialty practice residencies. Subjects responded to 16 statements relating to intrinsic and extrinsic determinants of work satisfaction on a scale of 1 to 5, where 1 = strongly disagree and 5 = strongly agree. Questionnaires were returned by 413 (59%) of the residents. The respondents were predominantly women (76%), and most (86%) had at least a Pharm. D. degree. Hospitals were the primary work setting (88%). Of the 413 residents, 305 were in pharmacy practice residencies and 108 were in specialized residencies. None of the mean scores indicated disagreement (scores 3) with the negatively worded statements. The median and mode were equal to 2 (disagree) for the three negatively worded items and 4 (agree) for all but three positively worded items. Only 8% of the residents indicated that they would not accept the residency again if given the chance. Specialized residents tended to rate positively worded statements higher and negatively worded statements lower than pharmacy practice residents. Female residents indicated greater satisfaction than male residents. Pay and benefits were rated slightly better than neutral. Pharmacy residents appeared generally satisfied with their residencies. Specialized pharmacy residents were more satisfied than pharmacy practice residents, and women were more satisfied than men.

  5. An Evidence-based, Longitudinal Curriculum for Resident Physician Wellness: The 2017 Resident Wellness Consensus Summit

    Directory of Open Access Journals (Sweden)

    Jacob Arnold

    2018-02-01

    Full Text Available Introduction: Physicians are at much higher risk for burnout, depression, and suicide than their non-medical peers. One of the working groups from the May 2017 Resident Wellness Consensus Summit (RWCS addressed this issue through the development of a longitudinal residency curriculum to address resident wellness and burnout. Methods: A 30-person (27 residents, three attending physicians Wellness Curriculum Development workgroup developed the curriculum in two phases. In the first phase, the workgroup worked asynchronously in the Wellness Think Tank – an online resident community – conducting a literature review to identify 10 core topics. In the second phase, the workgroup expanded to include residents outside the Wellness Think Tank at the live RWCS event to identify gaps in the curriculum. This resulted in an additional seven core topics. Results: Seventeen foundational topics served as the framework for the longitudinal resident wellness curriculum. The curriculum includes a two-module introduction to wellness; a seven-module “Self-Care Series” focusing on the appropriate structure of wellness activities and everyday necessities that promote physician wellness; a two-module section on physician suicide and self-help; a four-module “Clinical Care Series” focusing on delivering bad news, navigating difficult patient encounters, dealing with difficult consultants and staff members, and debriefing traumatic events in the emergency department; wellness in the workplace; and dealing with medical errors and shame. Conclusion: The resident wellness curriculum, derived from an evidence-based approach and input of residents from the Wellness Think Tank and the RWCS event, provides a guiding framework for residency programs in emergency medicine and potentially other specialties to improve physician wellness and promote a culture of wellness.

  6. Equipping Residents to Address Alcohol and Drug Abuse: The National SBIRT Residency Training Project

    Science.gov (United States)

    Pringle, Janice L.; Kowalchuk, Alicia; Meyers, Jessica Adams; Seale, J. Paul

    2012-01-01

    Background The Screening, Brief Intervention and Referral to Treatment (SBIRT) service for unhealthy alcohol use has been shown to be one of the most cost-effective medical preventive services and has been associated with long-term reductions in alcohol use and health care utilization. Recent studies also indicate that SBIRT reduces illicit drug use. In 2008 and 2009, the Substance Abuse Mental Health Service Administration funded 17 grantees to develop and implement medical residency training programs that teach residents how to provide SBIRT services for individuals with alcohol and drug misuse conditions. This paper presents the curricular activities associated with this initiative. Methods We used an online survey delivery application (Qualtrics) to e-mail a survey instrument developed by the project directors of 4 SBIRT residency programs to each residency grantee's director. The survey included both quantitative and qualitative data. Results All 17 (100%) grantees responded. Respondents encompassed residency programs in emergency medicine, family medicine, pediatrics, obstetrics-gynecology, psychiatry, surgery, and preventive medicine. Thirteen of 17 (76%) grantee programs used both online and in-person approaches to deliver the curriculum. All 17 grantees incorporated motivational interviewing and validated screening instruments in the curriculum. As of June 2011, 2867 residents had been trained, and project directors reported all residents were incorporating SBIRT into their practices. Consistently mentioned challenges in implementing an SBIRT curriculum included finding time in residents' schedules for the modules and the need for trained faculty to verify resident competence. Conclusions The SBIRT initiative has resulted in rapid development of educational programs and a cohort of residents who utilize SBIRT in practice. Skills verification, program dissemination, and sustainability after grant funding ends remain ongoing challenges. PMID:23451308

  7. The "hidden curriculum" and residents' attitudes about medical error disclosure: comparison of surgical and nonsurgical residents.

    Science.gov (United States)

    Martinez, William; Lehmann, Lisa Soleymani

    2013-12-01

    The "hidden curriculum" and role models for responding to medical errors might play a central role in influencing residents' attitudes about disclosure. We sought to compare surgical and nonsurgical residents' exposure to role modeling for responding to medical errors and their attitudes about error disclosure. We conducted a cross-sectional, electronic survey of surgical and nonsurgical residents at 2 large academic medical centers. The questionnaire asked respondents about personal experience with medical errors; training for responding to errors; frequency of exposure to role modeling related to disclosure; and attitudes about disclosure. Descriptive statistics were used to describe frequencies. Chi-square and Fisher's exact test were used to compare proportions between surgical and nonsurgical trainees. The response rate was 58% (253 of 435). Surgical residents reported more frequently observing a colleague be treated harshly (eg, humiliated or verbally abused) for an error than nonsurgical residents (sometimes or often, 39% [26 of 66] vs 20% [37 of 187]; p = 0.002). Surgical residents were more likely than nonsurgical residents to believe they would be treated harshly by others if they acknowledged making a medical error (35% [23 of 66] vs 12% [23 of 187]; p medical errors at their institution (11% [7 of 66] vs 2% [4 of 187]; p = 0.008). Surgical residents were less likely than nonsurgical residents to feel free to express concerns to other members of the team about medical errors in patient care (70% [46 of 66] vs 83% [115 of 187]; p = 0.02). The punitive response to error by senior members of the health care team might be an impediment to the transparent disclosure of errors among residents that might disproportionally affect surgical training programs. Copyright © 2013 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

  8. Study of the Accelerating Channel Wall Property Influence on the Hall Thruster Discharge Characteristics

    National Research Council Canada - National Science Library

    Vesselovzorov, Alexandre

    2004-01-01

    According to the work program and schedule there was developed the methodology of experiments on the discharge chamber material influence on the Hall thruster characteristics there was prepared Hall...

  9. Hall Effect Thruster for High Power Solar Electric Propulsion Technology Demonstration, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Busek proposes to develop a flight version of a high power Hall Effect thruster. While numerous high power Hall Effect thrusters have been demonstrated in the...

  10. Measured Early Lateral Energy Fractions in Concert Halls and Opera Houses

    Science.gov (United States)

    BARRON, M.

    2000-04-01

    In the 30 years since early lateral reflections were first suggested as important for concert halls, spatial impression and source broadening have become almost universally accepted as essential characteristics of halls with good acoustics. Two objective measures of source broadening have been proposed. Measured values of the best defined of these measures, the early lateral energy fraction (LF), are considered here. Results from two independent measurement surveys are discussed. Comparisons of LF values by hall show a significant link between hall mean LF and hall width. There is however considerable overlap between measured LF values in different halls so the relevance of describing halls by their mean early lateral energy fraction values is questionable. The behaviour of LF values within auditoria is discussed for different concert hall plan forms and within opera houses. A measure of source broadening including sound level is proposed and results considered in the context of auditorium design.

  11. Some applications of the field theory to condensed matter physics: the different sides of the quantum Hall effect; Quelques applications de la theorie des champs a la physique de la matiere condensee: l'effet Hall quantique dans tous ses etats

    Energy Technology Data Exchange (ETDEWEB)

    Chandelier, F

    2003-12-01

    The quantum Hall effect appears in low temperature electron systems submitted to intense magnetic fields. Electrons are trapped in a thin layer ({approx} 100.10{sup -8} cm thick) at the interface between 2 semiconductors or between a semiconductor and an insulating material. This thesis presents 3 personal contributions to the physics of plane systems and particularly to quantum Hall effect systems. The first contribution is a topological approach, it involves the study of Landau's problem in a geometry nearing that of Hall effect experiments. A mathematical formalism has been defined and by using the Kubo's formula, the quantification of the Hall conductivity can be linked to the Chern class of threaded holes. The second contribution represents a phenomenological approach based on dual symmetries and particularly on modular symmetries. This contribution uses visibility diagrams that have already produced right predictions concerning resistivity curves or band structures. The introduction of a physical equivalence has allowed us to build a phase diagram for the quantum Hall effect at zero temperature. This phase diagram agrees with the experimental facts concerning : -) the existence of 2 insulating phases, -) direct transitions between an insulating phase and any Hall phase through integer or fractionary values of the filling factor ({nu}), -) selection rules, and -) classification of the Hall states and their distribution around a metal state. The third contribution concerns another phenomenological approach based on duality symmetries. We have considered a class of (2+1)-dimensional effective models with a Maxwell-Chern-Simons part that includes a non-locality. This non-locality implies the existence of a hidden duality symmetry with a Z{sub 2} component: z {yields} 1/z. This symmetry has allowed us to meet the results of the Fisher's law concerning the components of the resistivity tensor. (A.C.)

  12. Personality traits and virtual reality performance.

    Science.gov (United States)

    Rosenthal, Rachel; Schäfer, Juliane; Hoffmann, Henry; Vitz, Martina; Oertli, Daniel; Hahnloser, Dieter

    2013-01-01

    Surgeons' personalities have been described as different from those of the general population, but this was based on small descriptive studies limited by the choice of evaluation instrument. Furthermore, although the importance of the human factor in team performance has been recognized, the effect of personality traits on technical performance is unknown. This study aimed to compare surgical residents' personality traits with those of the general population and to evaluate whether an association exists between their personality traits and technical performance using a virtual reality (VR) laparoscopy simulator. In this study, 95 participants (54 residents with basic, 29 with intermediate laparoscopic experience, and 12 students) underwent personality assessment using the NEO-Five Factor Inventory and performed five VR tasks of the Lap Mentor™ basic tasks module. The residents' personality traits were compared with those of the general population, and the association between VR performance and personality traits was investigated. Surgical residents showed personality traits different from those of the general population, demonstrating lower neuroticism, higher extraversion and conscientiousness, and male residents showed greater openness. In the multivariable analysis, adjusted for gender and surgical experience, none of the personality traits was found to be an independent predictor of technical performance. Surgical residents present distinct personality traits that differ from those of the general population. These traits were not found to be associated with technical performance in a virtual environment. The traits may, however, play an important role in team performance, which in turn is highly relevant for optimal surgical performance.

  13. Analysis of Resident Case Logs in an Anesthesiology Residency Program

    DEFF Research Database (Denmark)

    Yamamoto, Satoshi; Tanaka, Pedro; Madsen, Matias Vested

    2016-01-01

    Our goal in this study was to examine Accreditation Council for Graduate Medical Education case logs for Stanford anesthesia residents graduating in 2013 (25 residents) and 2014 (26 residents). The resident with the fewest recorded patients in 2013 had 43% the number of patients compared with the...

  14. Residents as teachers: survey of Canadian family medicine residents.

    Science.gov (United States)

    Ng, Victor K; Burke, Clarissa A; Narula, Archna

    2013-09-01

    To examine Canadian family medicine residents' perspectives surrounding teaching opportunities and mentorship in teaching. A 16-question online survey. Canadian family medicine residency programs. Between May and June 2011, all first- and second-year family medicine residents registered in 1 of the 17 Canadian residency programs as of September 2010 were invited to participate. A total of 568 of 2266 residents responded. Demographic characteristics, teaching opportunities during residency, and resident perceptions about teaching. A total of 77.7% of family medicine residents indicated that they were either interested or highly interested in teaching as part of their future careers, and 78.9% of family medicine residents had had opportunities to teach in various settings. However, only 60.1% of respondents were aware of programs within residency intended to support residents as teachers, and 33.0% of residents had been observed during teaching encounters. It appears that most Canadian family medicine residents have the opportunity to teach during their residency training. Many are interested in integrating teaching as part of their future career goals. Family medicine residencies should strongly consider programs to support and further develop resident teaching skills.

  15. new concepts of a modified hall - petch type relationship

    African Journals Online (AJOL)

    NIJOTECH

    Abstract. A modified form of the Hall - Perch equation, where the average grain diameter is replaced by the surface to volume ratio of internal boundaries (Sv), is considered. Working with this model, a flow stress – Sv relationship dominated by geometrically necessary dislocations (GNDs) is derived for the low strain region.

  16. Suitable reverberation time for halls for rock and pop music

    DEFF Research Database (Denmark)

    Adelman-Larsen, Niels Werner; Thompson, Eric Robert; Gade, Anders Christian

    2010-01-01

    The existing body of literature regarding the acoustic design of concert halls has focused almost exclusively on classical music, although there are many more performances of popular music, including rock and pop. Objective measurements were made of the acoustics of 20 rock music venues in Denmark...

  17. Analysis of Air Breathing Hall-Effect Thruster (Preprint)

    Science.gov (United States)

    2011-08-01

    even more attractive because of multi -years sateJiite missions and high cost of payloads. In a recent paper [I), Diamant has proposed a two-stage...at higher orbital altitude. References ( I) Diamant K. D., "A 2-Stage Cylindrical Hall Thruster for Air Breathing Electrical Propulsion," 46’" AJAA

  18. Tondiraba jäähall = Tondiraba ice arena

    Index Scriptorium Estoniae

    2015-01-01

    Tondiraba jäähall Tallinnas Varraku tänav 14, valminud 2014. Arhitektid Ott Kadarik, Mihkel Tüür, Kadri Tamme (Kadarik Tüür Arhitektid OÜ), insener Paavo Pikand. Eesti Kultuurkapitali Arhitektuuri sihtkapitali aastapreemia 2014

  19. Mini array of quantum Hall devices based on epitaxial graphene

    Energy Technology Data Exchange (ETDEWEB)

    Novikov, S.; Lebedeva, N. [Department of Micro and Nanosciences, Aalto University, Micronova, Tietotie 3, Espoo (Finland); Hämäläinen, J.; Iisakka, I.; Immonen, P.; Manninen, A. J.; Satrapinski, A. [VTT Technical Research Centre of Finland Ltd., Centre for Metrology MIKES, P.O. Box 1000, 02044 VTT (Finland)

    2016-05-07

    Series connection of four quantum Hall effect (QHE) devices based on epitaxial graphene films was studied for realization of a quantum resistance standard with an up-scaled value. The tested devices showed quantum Hall plateaux R{sub H,2} at a filling factor v = 2 starting from a relatively low magnetic field (between 4 T and 5 T) when the temperature was 1.5 K. The precision measurements of quantized Hall resistance of four QHE devices connected by triple series connections and external bonding wires were done at B = 7 T and T = 1.5 K using a commercial precision resistance bridge with 50 μA current through the QHE device. The results showed that the deviation of the quantized Hall resistance of the series connection of four graphene-based QHE devices from the expected value of 4×R{sub H,2} = 2 h/e{sup 2} was smaller than the relative standard uncertainty of the measurement (<1 × 10{sup −7}) limited by the used resistance bridge.

  20. Active Learning with Monty Hall in a Game Theory Class

    Science.gov (United States)

    Brokaw, Alan J.; Merz, Thomas E.

    2004-01-01

    The authors describe a game that students can play on the first day of a game theory class. The game introduces the 4 essential elements of any game and is designed so that its sequel, also played on the first day of class, has students playing the well-known Monty Hall game, which raises the question: Should you switch doors? By implementing a…

  1. The Hall-induced stability of gravitating fluids

    Science.gov (United States)

    Karmakar, P. K.; Goutam, H. P.

    2018-05-01

    We analyze the stability behavior of low-density partially ionized self-gravitating magnetized unbounded dusty plasma fluid in the presence of the Hall diffusion effects (HDEs) in the non-ideal magnetohydrodynamic (MHD) equilibrium framework. The effects of inhomogeneous self-gravity are methodically included in the basic model tapestry. Application of the Fourier plane-wave perturbative treatment decouples the structuration representative parameters into a linear generalized dispersion relation (sextic) in a judicious mean-fluid approximation. The dispersion analysis shows that the normal mode, termed as the gravito-magneto-acoustic (GMA) mode, is drastically modified due to the HDEs. This mode is highly dispersive, and driven unstable by the Hall current resulting from the symmetry-breaking of electrons and ions relative to the magnetic field. The mode feature, which is derived from a modified induction with the positive Hall, is against the ideal MHD. It is further demonstrated that the HDEs play stabilizing roles by supporting the cloud against gravitational collapse. Provided that the HDEs are concurrently switched off, the collapse occurs on the global spatial scale due to enhanced inward accretion of the gravitating dust constituents. It is seen explicitly that the enhanced dust-charge leads to stabilizing effects. Besides, the Hall-induced fluctuations, as propagatory wave modes, exhibit both normal and anomalous dispersions. The reliability checkup of the entailed results as diverse corollaries and special cases are illustratively discussed in the panoptic light of the earlier paradigmatic predictions available in the literature.

  2. Audience noise in concert halls during musical performances

    DEFF Research Database (Denmark)

    Jeong, Cheol-Ho; Marie, Pierre; Brunskog, Jonas

    2012-01-01

    Noise generated by the audience during musical performances is audible and sometimes disturbing. In this study, an attempt to estimate such audience noise was carried out. From the recordings of performances in five performance spaces (four concert halls and one opera house), probability density ....... (C) 2012 Acoustical Society of America. [http://dx.doi.org.globalproxy.cvt.dk/10.1121/1.3689558]...

  3. Clipboard: Human Y-chromosome: a hall of mirrors

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Biosciences; Volume 28; Issue 5. Clipboard: Human Y-chromosome: a hall of mirrors. B J Rao Kundan Sengupta. Volume 28 Issue 5 September 2003 pp 533-534. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/jbsc/028/05/0533-0534. Author Affiliations.

  4. A conformal field theory description of fractional quantum Hall states

    NARCIS (Netherlands)

    Ardonne, E.

    2002-01-01

    In this thesis, we give a description of fractional quantum Hall states in terms of conformal field theory (CFT). As was known for a long time, the Laughlin states could be written in terms of correlators of chiral vertex operators of a c=1 CFT. It was shown by G. Moore and N. Read that more general

  5. Effect of Hall Current and Finite Larmor Radius Corrections on ...

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Astrophysics and Astronomy; Volume 37; Issue 3. Effect of Hall Current and Finite Larmor Radius Corrections on Thermal Instability of Radiative Plasma for Star Formation in Interstellar Medium (ISM). Sachin Kaothekar. Research Article Volume 37 Issue 3 September 2016 Article ID 23 ...

  6. Effect of Hall Current and Finite Larmor Radius Corrections on ...

    Indian Academy of Sciences (India)

    discussed the magnetothermal instability with generalized Ohms law taking the effects of electrical resistivity, Hall current, electron inertia, thermal conductivity and radiative heat-loss function. Burkert and Lin (2000) pointed out the importance of thermal instability in the formation of clumpy gas clouds and they showed that.

  7. Audience noise in concert halls during musical performances

    DEFF Research Database (Denmark)

    Marie, Pierre; Jeong, Cheol-Ho; Brunskog, Jonas

    2012-01-01

    Noise generated by the audience during musical performances is audible and sometimes disturbing. In this study, an attempt to estimate such audience noise was carried out. From the recordings of performances in five performance spaces (four concert halls and one opera house), probability density...

  8. AFM diagnostics of graphene-based quantum Hall devices

    Czech Academy of Sciences Publication Activity Database

    Sikora, A.; Woszczyna, M.; Friedemann, M.; Ahlers, F. J.; Kalbáč, Martin

    2012-01-01

    Roč. 43, 2-3 (2012), s. 479-486 ISSN 0968-4328 Institutional research plan: CEZ:AV0Z40400503 Keywords : graphene * quantum Hall effect devices * atomic force microscopy Subject RIV: CG - Electrochemistry Impact factor: 1.876, year: 2012

  9. Effect of Hall Current and Finite Larmor Radius Corrections on ...

    Indian Academy of Sciences (India)

    The finite electrical resistivity removes the effect of magnetic field and the viscosity of the medium removes the effect of FLR from the condition of radiative instability. The Hall parameter affects only the longitudinal mode of propagation and it has no effect on the transverse mode of propagation. Numerical calculation shows ...

  10. Dynamics of antiferromagnetic skyrmion driven by the spin Hall effect

    Science.gov (United States)

    Jin, Chendong; Song, Chengkun; Wang, Jianbo; Liu, Qingfang

    2016-10-01

    Magnetic skyrmion moved by the spin-Hall effect is promising for the application of the generation racetrack memories. However, the Magnus force causes a deflected motion of skyrmion, which limits its application. Here, we create an antiferromagnetic skyrmion by injecting a spin-polarized pulse in the nanostripe and investigate the spin Hall effect-induced motion of antiferromagnetic skyrmion by micromagnetic simulations. In contrast to ferromagnetic skyrmion, we find that the antiferromagnetic skyrmion has three evident advantages: (i) the minimum driving current density of antiferromagnetic skyrmion is about two orders smaller than the ferromagnetic skyrmion; (ii) the velocity of the antiferromagnetic skyrmion is about 57 times larger than the ferromagnetic skyrmion driven by the same value of current density; (iii) antiferromagnetic skyrmion can be driven by the spin Hall effect without the influence of Magnus force. In addition, antiferromagnetic skyrmion can move around the pinning sites due to its property of topological protection. Our results present the understanding of antiferromagnetic skyrmion motion driven by the spin Hall effect and may also contribute to the development of antiferromagnetic skyrmion-based racetrack memories.

  11. Composite fermions a unified view of the quantum Hall regime

    CERN Document Server

    1998-01-01

    One of the most exciting recent developments to have emerged from the quantum Hall effect is the subject of composite fermions. This important volume gives a self-contained, comprehensive description of the subject, including fundamentals, more advanced theoretical work, and results from experimental observations of composite fermions.

  12. Mechanism of plateau formation in the fractional quantum Hall effect

    International Nuclear Information System (INIS)

    Bruus, H.; Hansen, O.P.; Hansen, E.B.

    1988-01-01

    Laughlin's fractionally charged quasi-holes and quasi-electrons are assumed to be pinned, and to be subject to a force j vectorxΦ 0 vector from the transport current. A force balance argument then explains the existence of Hall plateaus. (orig.)

  13. Planar Hall effect sensor with magnetostatic compensation layer

    DEFF Research Database (Denmark)

    Dalslet, Bjarke Thomas; Donolato, Marco; Hansen, Mikkel Fougt

    2012-01-01

    Demagnetization effects in cross-shaped planar Hall effect sensors cause inhomogeneous film magnetization and a hysteretic sensor response. Furthermore, when using sensors for detection of magnetic beads, the magnetostatic field from the sensor edges attracts and holds magnetic beads near the sen...

  14. Planar Hall effect sensor for magnetic micro- and nanobead detection

    DEFF Research Database (Denmark)

    Ejsing, Louise Wellendorph; Hansen, Mikkel Fougt; Menon, Aric Kumaran

    2004-01-01

    Magnetic bead sensors based on the planar Hall effect in thin films of exchange-biased permalloy have been fabricated and characterized. Typical sensitivities are 3 muV/Oe mA. The sensor response to an applied magnetic field has been measured without and with coatings of commercially available 2 ...

  15. Low-frequency noise in planar Hall effect bridge sensors

    DEFF Research Database (Denmark)

    Persson, Anders; Bejhedb, R.S.; Bejhed, R.S.

    2011-01-01

    The low-frequency characteristics of planar Hall effect bridge sensors are investigated as function of the sensor bias current and the applied magnetic field. The noise spectra reveal a Johnson-like spectrum at high frequencies, and a 1/f-like excess noise spectrum at lower frequencies, with a kn...

  16. Pragmatic data fusion uncertainty concerns: Tribute to Dave L. Hall

    CSIR Research Space (South Africa)

    Blasch, E

    2016-07-01

    Full Text Available on Information Fusion (FUSION), 5-8 July 2016, Heidelberg, Germany Pragmatic data fusion uncertainty concerns: Tribute to Dave L. Hall Erik Blasch ; Paulo C. G. Costa ; J. Pieter De Villiers ; Kathryn B. Laskey ; James Llinas ; Anne-Laure Jousselme...

  17. Effect of Hall Current and Finite Larmor Radius Corrections on ...

    Indian Academy of Sciences (India)

    Abstract. The effects of finite ion Larmor radius (FLR) corrections,. Hall current and radiative heat-loss function on the thermal instability of an infinite homogeneous, viscous plasma incorporating the effects of finite electrical resistivity, thermal conductivity and permeability for star formation in interstellar medium have been ...

  18. Hall kirjandus võrgustunud maailmas / Anneli Kuiv

    Index Scriptorium Estoniae

    Kuiv, Anneli

    2003-01-01

    1997. aasta määratluse kohaselt on hall kirjandus "kirjandus, mida toodetakse kõikidel tasanditel valitsus- ja teadusasutuste, äri- ja tootmisringkondade poolt nii trükituna kui ka elektroonselt, kuid mis ei ole kirjastustööstuse kontrolli all"

  19. Single particle detection: Phase control in submicron Hall sensors

    International Nuclear Information System (INIS)

    Di Michele, Lorenzo; Shelly, Connor; Gallop, John; Kazakova, Olga

    2010-01-01

    We present a phase-sensitive ac-dc Hall magnetometry method which allows a clear and reliable separation of real and parasitic magnetic signals of a very small magnitude. High-sensitivity semiconductor-based Hall crosses are generally accepted as a preferential solution for non-invasive detection of superparamagnetic nanobeads used in molecular biology, nanomedicine, and nanochemistry. However, detection of such small beads is often hindered by inductive pick-up and other spurious signals. The present work demonstrates an unambiguous experimental route for detection of small magnetic moments and provides a simple theoretical background for it. The reliability of the method has been tested for a variety of InSb Hall sensors in the range 600 nm-5 μm. Complete characterization of empty devices, involving Hall coefficients and noise measurements, has been performed and detection of a single FePt bead with diameter of 140 nm and magnetic moment of μ≅10 8 μ B has been achieved with a 600 nm-wide sensor.

  20. Quantum energy teleportation in a quantum Hall system

    Energy Technology Data Exchange (ETDEWEB)

    Yusa, Go; Izumida, Wataru; Hotta, Masahiro [Department of Physics, Tohoku University, Sendai 980-8578 (Japan)

    2011-09-15

    We propose an experimental method for a quantum protocol termed quantum energy teleportation (QET), which allows energy transportation to a remote location without physical carriers. Using a quantum Hall system as a realistic model, we discuss the physical significance of QET and estimate the order of energy gain using reasonable experimental parameters.

  1. 78 FR 26682 - Culturally Significant Objects Imported for Exhibition Determinations: “Hall of Ancient Egypt”

    Science.gov (United States)

    2013-05-07

    ... Determinations: ``Hall of Ancient Egypt'' AGENCY: Department of State. ACTION: Notice, correction. SUMMARY: On... determinations made by the Department of State pertaining to the exhibition ``Hall of Ancient Egypt.'' The... additional objects to be included in the exhibition ``Hall of Ancient Egypt,'' imported from abroad for...

  2. Current Percolation in Medium with Boundaries under Quantum Hall Effect Conditions

    Directory of Open Access Journals (Sweden)

    M. U. Malakeeva

    2012-01-01

    Full Text Available The current percolation has been considered in the medium with boundaries under quantum Hall effect conditions. It has been shown that in that case the effective Hall conductivity has a nonzero value due to percolation of the Hall current through the finite number of singular points (in our model these are corners at the phase joints.

  3. The influence of profiled ceilings on sports hall acoustics : Ground effect predictions and scale model measurements

    NARCIS (Netherlands)

    Wattez, Y.C.M.; Tenpierik, M.J.; Nijs, L.

    2018-01-01

    Over the last few years, reverberation times and sound pressure levels have been measured in many sports halls. Most of these halls, for instance those made from stony materials, perform as predicted. However, sports halls constructed with profiled perforated steel roof panels have an unexpected

  4. The use of Hall technique preformed metal crowns by specialist paediatric dentists in the UK

    OpenAIRE

    Roberts, A; McKay, A; Albadri, S

    2018-01-01

    Examines treatment planning involving Hall technique preformed metal crowns by specialists in paediatric dentistry. Explores clinical situations in which specialists in paediatric dentistry feel it is appropriate or not to fit Hall technique preformed metal crowns. Investigates which types of carious lesions are being treated with Hall technique preformed metal crowns by specialists in paediatric dentistry.

  5. 31 CFR 538.522 - Transactions related to U.S. citizens residing in Sudan.

    Science.gov (United States)

    2010-07-01

    ... residing in Sudan. 538.522 Section 538.522 Money and Finance: Treasury Regulations Relating to Money and.... citizens residing in Sudan. U.S. persons are authorized to engage in transactions in Sudan ordinarily... reside on a permanent basis in Sudan. ...

  6. Resident Career Planning Needs in Internal Medicine: A Qualitative Assessment

    Science.gov (United States)

    Garcia, Rina L.; Windish, Donna M.; Rosenbaum, Julie R.

    2010-01-01

    Background Few residency programs have centralized resources for career planning. As a consequence, little is known about residents' informational needs regarding career planning. Objective To examine career preparation stressors, practical needs, and information that residents wished they were privy to when applying. Methods In 2007 and 2008, we surveyed 163 recent graduates or graduating residents from 10 Yale-based and Yale-affiliated hospitals' internal medicine programs regarding their experiences with applying for positions after residency. We included questions about demographics, mentorship, stress of finding a job or fellowship, and open-ended questions to assess barriers and frustrations. Qualitative data were coded independently and a classification scheme was negotiated by consensus. Results A total of 89 residents or recent graduates responded, and 75% of them found career planning during residency training at least somewhat stressful. Themes regarding the application process included (1) knowledge about the process, (2) knowledge about career paths and opportunities, (3) time factors, (4) importance of adequate personal guidance and mentorship, and (5) self-knowledge regarding priorities and the desired outcome. Residents identified the following advice as most important: (1) start the process as early as possible and with a clear knowledge of the process timeline, (2) be clear about personal goals and priorities, and (3) be well-informed about a prospective employer and what that employer is looking for. Most residents felt career planning should be structured into the curriculum and should occur in the first year or throughout residency. Conclusions This study highlights residents' desire for structured dissemination of information and counseling with regard to career planning during residency. Our data suggest that exposure to such resources may be beneficial as early as the first year of training. PMID:22132271

  7. Resident career planning needs in internal medicine: a qualitative assessment.

    Science.gov (United States)

    Garcia, Rina L; Windish, Donna M; Rosenbaum, Julie R

    2010-12-01

    Few residency programs have centralized resources for career planning. As a consequence, little is known about residents' informational needs regarding career planning. To examine career preparation stressors, practical needs, and information that residents wished they were privy to when applying. In 2007 and 2008, we surveyed 163 recent graduates or graduating residents from 10 Yale-based and Yale-affiliated hospitals' internal medicine programs regarding their experiences with applying for positions after residency. We included questions about demographics, mentorship, stress of finding a job or fellowship, and open-ended questions to assess barriers and frustrations. Qualitative data were coded independently and a classification scheme was negotiated by consensus. A total of 89 residents or recent graduates responded, and 75% of them found career planning during residency training at least somewhat stressful. Themes regarding the application process included (1) knowledge about the process, (2) knowledge about career paths and opportunities, (3) time factors, (4) importance of adequate personal guidance and mentorship, and (5) self-knowledge regarding priorities and the desired outcome. Residents identified the following advice as most important: (1) start the process as early as possible and with a clear knowledge of the process timeline, (2) be clear about personal goals and priorities, and (3) be well-informed about a prospective employer and what that employer is looking for. Most residents felt career planning should be structured into the curriculum and should occur in the first year or throughout residency. This study highlights residents' desire for structured dissemination of information and counseling with regard to career planning during residency. Our data suggest that exposure to such resources may be beneficial as early as the first year of training.

  8. Use of CFD modelling for analysing air parameters in auditorium halls

    Science.gov (United States)

    Cichowicz, Robert

    2017-11-01

    Modelling with the use of numerical methods is currently the most popular method of solving scientific as well as engineering problems. Thanks to the use of computer methods it is possible for example to comprehensively describe the conditions in a given room and to determine thermal comfort, which is a complex issue including subjective sensations of the persons in a given room. The article presents the results of measurements and numerical computing that enabled carrying out the assessment of environment parameters, taking into consideration microclimate, temperature comfort, speeds in the zone of human presence and dustiness in auditory halls. For this purpose measurements of temperature, relative humidity and dustiness were made with the use of a digital microclimate meter and a laser dust particles counter. Thanks to the above by using the application DesignBuilder numerical computing was performed and the obtained results enabled determining PMV comfort indicator in selected rooms.

  9. Teacher in Residence: Bringing Science to Students

    CERN Multimedia

    Daisy Yuhas

    CERN welcomes its first Teacher in Residence, Terrence Baine of the University of Oslo. Baine, who originally hails from Canada, will be concurrently completing his PhD in Physics Education during his time at CERN. Like CERN’s High School Teacher Programme (HST), of which Baine is an alumnus, the Teacher in Residence position is designed to help educators spread the science of CERN in a form that is accessible to students and can encourage them to pursue physics throughout their education.   Terrence Baine, first 'teacher in residence' at CERN Baine explains, “It’s very important to have a teacher present who can be that middle person between the young peoplecoming here, whom we are trying to enlighten, and the physicists who work at CERN. The Teacher in Residence can act as an on-site educational consultant.” As Teacher in Residence, Baine’s primary project will be to develop teaching modules, or a series of lesson plans, that can help high schoo...

  10. A buberian approach to the co-construction of relationships between professional caregivers and residents in nursing homes

    NARCIS (Netherlands)

    Westerhof, Gerben Johan; van Vuuren, Hubrecht A.; Brummans, Boris H.J.M.; Custers, Annette F.J.

    2014-01-01

    This article demonstrates the value of a Buberian approach to relationships between professional caregivers and residents in nursing homes. Extant research on relationships between professional caregivers and residents typically distinguishes between task-centered and person-centered communication

  11. Measuring resident well-being: impostorism and burnout syndrome in residency.

    Science.gov (United States)

    Legassie, Jenny; Zibrowski, Elaine M; Goldszmidt, Mark A

    2008-07-01

    Assessing resident well-being is becoming increasingly important from a programmatic standpoint. Two measures that have been used to assess this are the Clance Impostor Scale (CIS) and the Maslach Burnout Inventory-Human Services Survey (MBI-HSS). However, little is known about the relationship between the two phenomena. To explore the prevalence and association between impostorism and burnout syndrome in a sample of internal medicine residents. Anonymous, cross-sectional postal survey. Forty-eight internal medicine residents (postgraduate year [PGY] 1-3) at the Schulich School of Medicine & Dentistry (62.3% response rate). Short demographic questionnaire, CIS and MBI-HSS. Impostorism and burnout syndrome were identified in 43.8% and 12.5% of residents, respectively. With the exception of a negative correlation between CIS scores and the MBI's personal accomplishment subscale (r = -.30; 95% CI -.54 to -.02), no other significant relations were identified. Foreign-trained residents were more likely to score as impostors (odds ratio [OR] 10.7; 95% CI 1.2 to 98.2) while senior residents were more likely to experience burnout syndrome (OR 16.5 95% CI 1.6 to 168.5). Both impostorism and burnout syndrome appear to be threats to resident well-being in our program. The lack of relationship between the two would suggest that programs and researchers wishing to address the issue of resident distress should consider using both measures. The finding that foreign-trained residents appear to be more susceptible to impostorism warrants further study.

  12. Factors associated with primary care residents' satisfaction with their training.

    Science.gov (United States)

    Randall, C S; Bergus, G R; Schlechte, J A; McGuinness, G; Mueller, C W

    1997-01-01

    Satisfaction is known to impact work performance, learning, recruitment, and retention. This study identifies the factors associated with primary care residents' satisfaction with their training. We used a cross-sectional survey based on the Price-Mueller model of job satisfaction. The model included 14 job characteristics, four personal characteristics, and four demographic factors. Data were collected in February and March 1996 from residents in three primary care training programs (family practice, pediatrics, and internal medicine) at a large academic medical center. The same standardized, self-administered questionnaires were used in all three departments. Seventy-five percent (n = 119) of the residents returned questionnaires. Five job characteristics were positively associated with resident satisfaction: continuity of care, autonomy, collegiality, work that encourages professional growth, and work group loyalty. Role conflict, a sixth job characteristic, was negatively associated with satisfaction. The personal characteristic of having an optimistic outlook on life was also positively associated with satisfaction. The model explained 66% of the variation in self-reported satisfaction. The satisfaction of the residents was significantly associated with six job characteristics and one personal factor. Interventions based on these job characteristics may increase resident satisfaction and may lead to better patient outcomes, better work performance, greater patient satisfaction, and more success in recruiting top students into a residency.

  13. Money matters: a resident curriculum for financial management.

    Science.gov (United States)

    Mizell, Jason S; Berry, Katherine S; Kimbrough, Mary Katherine; Bentley, Frederick R; Clardy, James A; Turnage, Richard H

    2014-12-01

    A 2005 survey reported 87% of surgery program directors believed practice management training should occur during residency. However, only 8% of program directors believed residents received adequate training in practice management [1]. In addition to the gap in practice financial management knowledge, we recognized the need for training in personal finance among residents. A literature review and needs assessment led to the development of a novel curriculum for surgery residents combining principles of practice management and personal finance. An 18-h curriculum was administered over the 2012 academic year to 28 post graduate year 1-5 surgery residents and faculty. A self-assessment survey was given at the onset and conclusion of the curriculum [2]. Pre-tests and post-tests were given to objectively evaluate each twice monthly session's content. Self-perception of learning, interest, and acquired knowledge were analyzed using the Wilcoxon signed ranks test. Initial self-assessment data revealed high interest in practice management and personal finance principles but a deficiency in knowledge of and exposure to these topics. Throughout the curriculum, interest increased. Residents believed their knowledge of these topics increased after completing the curriculum, and objective data revealed various impacts on knowledge. Although surgery residents receive less exposure to these topics than residents in other specialties, their need to know is no less. We developed, implemented, and evaluated a curriculum that bridged this gap in surgery education. After the curriculum, residents reported an increase in interest, knowledge, and responsible behavior relating to personal and practice financial management. Copyright © 2014 Elsevier Inc. All rights reserved.

  14. Resident fatigue in otolaryngology residents: a Web based survey.

    Science.gov (United States)

    Nida, Andrew M; Googe, Benjamin J; Lewis, Andrea F; May, Warren L

    2016-01-01

    Resident fatigue has become a point of emphasis in medical education and its effects on otolaryngology residents and their patients require further study. The purpose of our study was to evaluate the prevalence and nature of fatigue in otolaryngology residents, evaluate various quality of life measures, and investigate associations of increased fatigue with resident safety. Anonymous survey. Internet based. United States allopathic otolaryngology residents. None. The survey topics included demographics, residency structure, sleep habits and perceived stress. Responses were correlated with a concurrent Epworth Sleep Scale questionnaire to evaluate effects of fatigue on resident training and quality of life. 190 residents responded to the survey with 178 completing the Epworth Sleep Scale questionnaire. Results revealed a mean Epworth Sleep Scale score of 9.9±5.1 with a median of 10.0 indicating a significant number of otolaryngology residents are excessively sleepy. Statistically significant correlations between Epworth Sleep Scale and sex, region, hours of sleep, and work hours were found. Residents taking in-house call had significantly fewer hours of sleep compared to home call (p=0.01). Residents on "head and neck" (typically consisting of a large proportion of head and neck oncologic surgery) rotations tended to have higher Epworth Sleep Scale and had significantly fewer hours of sleep (p=.003) and greater work hours (potolaryngology residents are excessively sleepy. Our data suggest that the effects of fatigue play a role in resident well-being and resident safety. Copyright © 2016 Elsevier Inc. All rights reserved.

  15. Life satisfaction of people with intellectual disability living in community residences: perceptions of the residents, their parents and staff members.

    Science.gov (United States)

    Schwartz, C; Rabinovitz, S

    2003-02-01

    Within the literature on quality of life (QoL), life satisfaction (LS) has emerged as a key variable by which to measure perceived well-being, which is referred to as subjective QoL. The LS self-reports of 93 residents with intellectual disability (ID) living in community-based residences were compared with reports about their LS completed by their staff and parents. The residents were interviewed on their LS by social workers who did not belong to the staff of the interviewee's residence. The instrument used was the Life Satisfaction Scale (LSS). Staff and parents completed the short version of the LSS. Residents and staff's LS reports were positively correlated. However, significant differences were found between these two groups of informants when the residents were characterized as high functioning, had a low score in challenging behaviour, worked in an integrative employment setting and lived in an apartment. As opposed to staff/resident discrepancies, no differences were found between parents' and residents' LS reports. If residents cannot to be interviewed about their LS, then the parent is the preferred person to respond on behalf of the resident. The current study highlights the importance of including both objective measures (e.g. functional assessment characteristics) and subjective measures (e.g. LS) in order to get a better understanding of the QoL of people with ID.

  16. Spin chirality induced skew scattering and anomalous Hall effect in chiral magnets.

    Science.gov (United States)

    Ishizuka, Hiroaki; Nagaosa, Naoto

    2018-02-01

    Noncoplanar magnetic orders in magnetic metals give rise to an anomalous Hall effect of unconventional origin, which, by the spin Berry phase effect, is known as the topological Hall effect. This effect is pronounced in the low-temperature limit, where the fluctuation of spins is suppressed. In contrast, we here discuss that the fluctuating but locally correlated spins close to the phase boundary give rise to another anomalous Hall effect, that with the opposite sign to the topological Hall effect. Using the Born approximation, we show that the anomalous Hall effect is attributed to the skew scattering induced by the local correlation of spins. The relation of the scalar spin chirality to the skew scattering amplitude is given, and the explicit formula for the Hall conductivity is derived using a semiclassical Boltzmann transport theory. Our theory potentially accounts for the sign change of the anomalous Hall effect observed in chiral magnets in the vicinity of the phase boundary.

  17. Acoustics of the Great Hall of the Moscow State Conservatory after reconstruction in 2010-2011

    Science.gov (United States)

    Kanev, N. G.; Livshits, A. Ya.; Möller, H.

    2013-05-01

    The Great Hall of the Moscow State Conservatory was built in the early 20th century. For more than 100 years of service, it had a high acoustic reputation both among musicians and audience. By the beginning of the 21st century, the hall was in nearly critical condition. Thus, major renovation was needed. In terms of architectural acoustics, the main task was to keep the good acoustics of the hall. This paper presents the results of acoustic parameter measurements of the hall after Reconstruction in 2010-2011. The parameters of the hall measured before and after reconstruction are also compared. The comparative acoustic characteristics between the Great Hall and world leading concert halls are given.

  18. The Prevalence of Burnout Among US Neurosurgery Residents.

    Science.gov (United States)

    Shakir, Hakeem J; McPheeters, Matthew J; Shallwani, Hussain; Pittari, Joseph E; Reynolds, Renée M

    2017-10-27

    Burnout is a syndrome of emotional exhaustion, depersonalization, and reduced personal accomplishment. Its prevalence among US physicians exceeds 50% and is higher among residents/fellows. This is important to the practice of neurosurgery, as burnout is associated with adverse physical health, increased risk of substance abuse, and increased medical errors. To date, no study has specifically addressed the prevalence of burnout among neurosurgery residents. To determine and compare the prevalence of burnout among US neurosurgery residents with published rates for residents/fellows and practicing physicians from other specialties. We surveyed 106 US neurosurgery residency training programs to perform a descriptive analysis of the prevalence of burnout among residents. Data on burnout among control groups were used to perform a cross-sectional analysis. Nonparametric tests assessed differences in burnout scores among neurosurgery residents, and the 2-tailed Fisher's exact test assessed burnout between neurosurgery residents and control populations. Of approximately 1200 US neurosurgery residents, 255 (21.3%) responded. The prevalence of burnout was 36.5% (95% confidence interval: 30.6%-42.7%). There was no significant difference in median burnout scores between gender (P = .836), age (P = .183), or postgraduate year (P = .963) among neurosurgery residents. Neurosurgery residents had a significantly lower prevalence of burnout (36.5%) than other residents/fellows (60.0%; P burnout than other residents/fellows and practicing physicians. The underlying causes for these findings were not assessed and are likely multifactorial. Future studies should address possible causes of these findings. Copyright © 2017 by the Congress of Neurological Surgeons

  19. Resident-to-resident relational aggression and subjective well-being in assisted living facilities.

    Science.gov (United States)

    Trompetter, Hester; Scholte, Ron; Westerhof, Gerben

    2011-01-01

    Research in settings similar to assisted living facilities suggests that relational aggression, an indirect and mature form of aggression, might occur in assisted living facilities. This empirical study investigates the existence of relational aggression in a sample of residents and the relationship between relational aggression and resident's subjective well-being. 121 residents from six assisted living facilities completed questionnaires assessing personal experiences as victims of relational aggression and subjective well-being. Also nurses reported on victimization of relational aggression for every participant. Linear regression models were used to examine the association between both reports of relational aggression and subjective well-being. Relational aggression was shown to exist in assisted living facilities according to both residents (prevalence: 19%) and nurses (prevalence: 41%). Chi-square testing revealed no association between ratings by nurses and residents. Self-reports of victimization of relational aggression were related to depression, anxiety, satisfaction with life and social loneliness, but not to emotional loneliness. Nurse-reports of victimization of relational aggression were not related to subjective well-being. Self-reports of relational aggression seem to be better predictors of resident's well-being than nurse-reports of relational aggression. Awareness of these findings and the discrepancy between nurse-reports and self-reports are important for practice and for future research regarding social dynamics and living arrangements in elderly care settings.

  20. Outbreak of Cryptosporidium hominis following river flooding in the city of Halle (Saale), Germany, August 2013.

    Science.gov (United States)

    Gertler, Maximilian; Dürr, Matthias; Renner, Peter; Poppert, Sven; Askar, Mona; Breidenbach, Janina; Frank, Christina; Preußel, Karina; Schielke, Anika; Werber, Dirk; Chalmers, Rachel; Robinson, Guy; Feuerpfeil, Irmgard; Tannich, Egbert; Gröger, Christine; Stark, Klaus; Wilking, Hendrik

    2015-02-22

    During weeks 32-33, 2013, 24 cases of cryptosporidiosis were notified in the city of Halle (annual mean 2008-2012: 9 cases). We investigated the outbreak to identify the source and recommend control measures, considering that between weeks 23-25 the river Saale which flows through the city centre overflowed the floodplain, parts of the city centre and damaged sewage systems. We defined a case as a resident of Halle with gastroenteritis, Cryptosporidium-positive stool and disease onset weeks 27 through 47. In a case-control study among kindergarten children, we compared cases and controls regarding environmental exposure, use of swimming pools, zoo visits and tap water consumption 14 days pre-onset or a corresponding 14-days-period (controls) and adjusted for residence. Stool specimens were tested by microscopy and PCR, and Cryptosporidium DNA was sequenced. Samples from public water system, swimming pools and river Saale were examined for Cryptosporidium oocysts (microscopy and PCR). Overall, 167 cases were detected, 40/167 (24%) were classified as secondary cases. First disease onsets occurred during week 29, numbers peaked in week 34 and started to decrease in week 36. Median age was 8 years (range: 0-77). Compared to controls (n = 61), cases (n = 20) were more likely to report visits to previously flooded areas (OR: 4.9; 95%-CI: 1.4-18) and the zoo (OR: 2.6; 95%-CI: 0.9-7.6). In multivariable analysis visits to the floodplain remained the sole risk factor (OR: 5.5; 95%-CI: 1.4-22). Only C.hominis of a single genotype (IbA9G2) was detected in stools. Oocysts were detected in samples from the river, two local lakes and three public swimming pools by microscopy, but not in the public water supply. Evidence suggests that activities in the dried out floodplain led to infection among children. Secondary transmissions may be involved. Consequently, authorities recommended to avoid playing, swimming and having picnics in the flood-affected area. Health