Preliminares

Directory of Open Access Journals (Sweden)

Desde el Jardín de Freud

2015-05-01

Full Text Available Desde el Jardín de Freud se encuentra indexada en el IBN-Publindex (Colciencias, en categoría C, y en las siguientes bases de datos y catálogos: EBSCO, ProQuest, Latindex, Dialnet, Rebiun, Doaj, e-Revistas y Biblioteca virtual Luis Ángel Arango.

Tabla de contenido

Directory of Open Access Journals (Sweden)

Desde el Jardín de Freud

2016-01-01

Full Text Available Desde el Jardín de Freud se encuentra indexada en el IBN-Publindex (Colciencias, en categoría C, y en las siguientes bases de datos y catálogos: EBSCO, ProQuest, CLASE, Latindex, Dialnet, Rebiun, Doaj, e-Revistas y Biblioteca virtual Luis Ángel Arango.

The Effect of Creative Drama as a Method on Skills: A Meta-Analysis Study

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Ulubey, Özgür

2018-01-01

The aim of the current study was to synthesize the findings of experimental studies addressing the effect of the creative drama method on the skills of students. Research data were derived from ProQuest Citations, Web of Science, Google Academic, National Thesis Center, EBSCO, ERIC, Taylor & Francis Online, and ScienceDirect databases using…

Subscribing to Databases: How Important Is Depth and Quality of Indexing?

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Delong, Linwood

2007-01-01

This paper compares the subject indexing on articles pertaining to Immanuel Kant, agriculture, and aging that are found simultaneously in Humanities Index, Academic Search Elite (EBSCO) and Periodicals Research II (Micromedia ProQuest), in order to show that there are substantial variations in the depth and quality of indexing in these databases.…

Editorial

Directory of Open Access Journals (Sweden)

Mario Bernardo Figueroa Muñoz

2016-01-01

Full Text Available Desde el Jardín de Freud se encuentra indexada en el IBN-Publindex (Colciencias, en categoría C, y en las siguientes bases de datos y catálogos: EBSCO, ProQuest, CLASE, Latindex, Dialnet, Rebiun, Doaj, e-Revistas y Biblioteca virtual Luis Ángel Arango.

Preliminares

Directory of Open Access Journals (Sweden)

Desde el Jardín de Freud

2016-01-01

Full Text Available Desde el Jardín de Freud se encuentra indexada en el IBN-Publindex (Colciencias, en categoría C, y en las siguientes bases de datos y catálogos: EBSCO, ProQuest, CLASE, Latindex, Dialnet, Rebiun, Doaj, e-Revistas y Biblioteca virtual Luis Ángel Arango.

Prospect Theory and the Risks Involved in Decision-Making: Content Analysis in ProQuest Articles

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Sady Darcy da Silva-Junior

2016-04-01

Full Text Available In this study, the objective is to perform content analysis on articles of a reliable database, dealing with the prospect theory and the risks involved in the decision making process, evaluating some criteria for the theoretical and methodological approaches that allow a joint analysis and comparative. Therefore, a search in ProQuest database was performed which resulted in 15 articles that were submitted to content analysis process, based on the evaluation of nine factors identified by researchers. Among the results highlight the critical attitude to the prospect theory, in contrast to the assertion of his representative capacity of real situations and application in various situations.

ETD Management and Publishing in the ProQuest System and the University Repository: A Comparative Analysis

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Gail P. Clement

2013-08-01

Full Text Available INTRODUCTION This study compares the two most popular ETD management and publishing systems used in the American higher education community today: the commercial ProQuest Dissertation Publishing system and the university repository. METHODS Characteristics of these systems are identified and categorized in order to determine the features, functions, and policies common to both, and those that uniquely characterize one or the other system. Performing such a head-to-head comparison provides valuable information and insights to decision makers responsible for managing or overhauling their university’s ETD program. RESULTS Comparison of characteristics shows the ProQuest system and the university repository both provide functional solutions for submitting, storing, disseminating, and archive ETDs using digital technology. Yet each system also has unique characteristics that distinguish it from the other. DISCUSSION & CONCLUSION The authors conclude that there is no single ‘best’ system for ETD management overall. Rather, it is up to decision makers at each institution to choose an approach that best fits their university’s values, goals and needs. Finally, the authors point out the need for a single portal for ETDs that allows for search and discovery of these unique works of scholarship wherever the full text resides. Future investigation into possible solutions for such an ETD portal would be a boon not only to universities and ETD authors, but to the broader community of researchers, students, professionals and interested citizenry who could benefit from easier access to this this growing corpus of knowledge.

PROTEST AND CONSUMER: A CONTENT ANALYSIS OF EBSCO ELECTRONIC DATABASE ACROSS 50 YEARS

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Kresno A. Hendarto

2014-02-01

Full Text Available AbstractThe objective of this research is to review the articles of protest and consumer in EBSCO electronic journal. The objective will be achieved by answering the following questions: (i what is the method of reviewed articles with the topic of protest; and (ii what agenda of future research? The results showed that most reviewed articles  used qualitative approach. Most research are empirical in nature. For articles of empirical research, most of the data were obtained through observation and were analyzed descriptively. Literature on protest and consumer can be classified into 3 main categories: (1 discussing about the frequency, cause, and objective of protest; (2 discussing about the consequence of protest; and (3 discussing about the  motivation of individuals in taking part in the protest. This review also showed that there are major gaps from the previous research including the fact that attitude is not the focal point in explaining why consumers take part in protest and no article discussed consumers’ attitude to the object taking part in the protest.  AbstrakTujuan penelitian ini adalah melakukan ulas balik artikel-artikel bertopik protes dan konsumen pada database elektronik EBSCO. Tujuan tersebut akan dicapai dengan menjawab pertanyaan penelitian sebagai berikut: (i apa metode dan sifat dasar dari artikel yang bertopik protes; dan (ii agenda penelitian apa yang masih terbuka ke depan? Hasil analisis menunjukkan bahwa kebanyakan artikel yang direview menggunakan pendekatan kualitatif. Kebanyakan artikel merupakan penelitian empiris. Untuk artikel penelitian empiris, mayoritas data diperoleh dengan cara observasi, dan dianalisis secara deskriptif. Literatur tentang protes dan konsumen dapat digolongkan dalam 3 bagian besar, yaitu (1 yang membahas tentang frekuensi, sebab, dan tujuan protes; (2 yang membahas tentang konsekuensi dari protes; dan (3 yang membahas tentang motivasi individu yang mendasari untuk berpartisipasi dalam

Evaluation models and criteria of the quality of hospital websites: a systematic review study

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Jeddi, Fatemeh Rangraz; Gilasi, Hamidreza; Khademi, Sahar

2017-01-01

Introduction Hospital websites are important tools in establishing communication and exchanging information between patients and staff, and thus should enjoy an acceptable level of quality. The aim of this study was to identify proper models and criteria to evaluate the quality of hospital websites. Methods This research was a systematic review study. The international databases such as Science Direct, Google Scholar, PubMed, Proquest, Ovid, Elsevier, Springer, and EBSCO together with regiona...

THE INFLUENCE OF MUSIC ON CONSUMER BEHAVIOR

OpenAIRE

Eduardo Biagi Almeida Santos; Otávio Bandeira De Lamônica Freire

2013-01-01

This present paper shows the influence of music used in a retail environment in relation to consumer behavior. For obtaining the information, we based this research on a literature review in national and international journals, by 4 databases including: Proquest, EBSCO Host, CAPES periódicos and Mendeley, in the period of 2008 and 2012, by the keywords: music behavior, music in retail environment, background music, music consumer, environmental music, music and consumer behavior and music in ...

Rest and treatment/rehabilitation following sport-related concussion: a systematic review.

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Schneider, Kathryn J; Leddy, John J; Guskiewicz, Kevin M; Seifert, Tad; McCrea, Michael; Silverberg, Noah D; Feddermann-Demont, Nina; Iverson, Grant L; Hayden, Alix; Makdissi, Michael

2017-06-01

The objective of this systematic review was to evaluate the evidence regarding rest and active treatment/rehabilitation following sport-related concussion (SRC). Systematic review. MEDLINE (OVID), CINAHL (EbscoHost), PsycInfo (OVID), Cochrane Central Register of Controlled Trials (OVID), SPORTDiscus (EbscoHost), EMBASE (OVID) and Proquest DissertationsandTheses Global (Proquest) were searched systematically. Studies were included if they met the following criteria: (1) original research; (2) reported SRC as the diagnosis; and (3) evaluated the effect of rest or active treatment/rehabilitation. Review articles were excluded. Twenty-eight studies met the inclusion criteria (9 regarding the effects of rest and 19 evaluating active treatment). The methodological quality of the literature was limited; only five randomised controlled trials (RCTs) met the eligibility criteria. Those RCTs included rest, cervical and vestibular rehabilitation, subsymptom threshold aerobic exercise and multifaceted collaborative care. A brief period (24-48 hours) of cognitive and physical rest is appropriate for most patients. Following this, patients should be encouraged to gradually increase activity. The exact amount and duration of rest are not yet well defined and require further investigation. The data support interventions including cervical and vestibular rehabilitation and multifaceted collaborative care. Closely monitored subsymptom threshold, submaximal exercise may be of benefit. PROSPERO 2016:CRD42016039570. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

"Kuugeln" [sprich: "Kuhg(E)ln] statt "Googeln" [sprich "Guhg(E)ln"] - Integrierte Suche mit Ebsco Discovery Service im Medienbestand der Universitätsbibliothek der Kunstuniversität Graz

OpenAIRE

Schiller, Robert

2011-01-01

"Kuugeln" rather than "Googeln". The library of the Kunstuniversität Graz has implemented EBSCO Discovery Service (EDS) as the main discovery service for searching the library's online holdings. We regard EDS as a way to offer better access to the electronic resources by using a single search technology.

Factors associated with intended and effective settlement of nursing students and newly graduated nurses in a rural setting after graduation: a mixed-methods review.

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Trépanier, Amélie; Gagnon, Marie-Pierre; Mbemba, Gisèle Irène Claudine; Côté, José; Paré, Guy; Fortin, Jean-Paul; Duplàa, Emmanuel; Courcy, François

2013-03-01

To identify factors that influence the initial plan and final decision to choose a rural area as first employment location in final-year nursing students or newly graduated nurses. We conducted a mixed-methods review of the literature, including both published and gray literature, using established criteria. Two reviewers performed data extraction of relevant information independently. We retrieved empirical studies from the following databases: PubMED, Embase, CINAHL (EBSCO), Web of Science (SCI and SSCI), The Cochrane Library, Business Source Premier (EBSCO), ERIC, Proquest and PsychInfo. We also searched for empirical studies in the technical and gray literature and reviewed journals related to rural health. Additionally, we conducted searches in websites such as the Center for Health Workforce Planning and Analysis, as well as Google and Google Scholar search engines. Of the 523 studies thus screened, 15 were included for data extraction. We identified more than 40 factors associated with initial plans and final decision to settle in a rural area among nursing graduates. Only limited literature is currently available on the factors associated with the intention of nursing students or newly graduated nurses of practicing in rural areas and on the relationship between intention and effective behavior. This review highlights the needs for further research in this field. Copyright © 2012 Elsevier Ltd. All rights reserved.

Current outlook for the study of human rights since its dimensions

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Tania Giovanna Vivas Barrera

2013-05-01

Full Text Available In this paper, we shows a overview of a state of art about the relationships between ontological, epistemological and sociological dimension of human rights. In this research we seek to identify central problems and the methodologies used in such dimensions. In this way, we expose the conceptual framework and tree topics in the research problem: (i constitutional theory; (ii constitutional procedural law, and (iii international systems of human rights protection. This work present the problems found in scientifically articles available in expert databases such as Proquest, Ebsco, Dialnet and Redalyc.

Quality of Service: a study in databases bibliometric international

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Deosir Flávio Lobo de Castro Junior

2013-08-01

Full Text Available The purpose of this article is to serve as a source of references on Quality of Service for future research. After surveying the international databases, EBSCO and ProQuest, the results on the state of the art in this issue are presented. The method used was the bibliometrics, and 132 items from a universe of 13,427 were investigated. The analyzed works cover the period from 1985 to 2011. Among the contributions, results and conclusions for future research are presented: i most cited authors ii most used methodology, dimensions and questionnaire; iii most referenced publications iv international journals with most publications on the subject, v distribution of the number of publications per year; vi authors networks vii educational institutions network; viii terms used in the search in international databases; ix the relationships studied in 132 articles; x criteria for choice of methodology in the research on quality of services; xi most often used paradigm, and xii 160 high impact references.

Modelli di acquisto di e-book per le biblioteche dell'università italiana. Tre piattaforme a confronto (EBL, Ebrary, Ebsco

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Giovanna Frigimelica

2014-01-01

Full Text Available In recent years, the spread of ebooks has grown exponentially. 24/7 availability, portability, the advanced tools offered by platforms make this product particularly interesting for academic libraries, which are in an experimental phase with regard to the selection and acquisition of ebooks. The article analyzes three platforms (EBL, Ebrary, EBSCO, to find out whether an Italian medium-sized university library can buy foreign titles in electronic rather than paper, and under what conditions. It provides information about titles catalog, business models, features available. The cut is practical/experimental, since the comparison among the platforms is based on a set, used as a representative sample, of 150 monographs, published in the last 5 years by different publishers and purchased on paper.

Green Product Purchasing Phenomenon: Exploring The Gaps Of Theoretical, Methodological And Empirical

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Rahab Bin Tafsir

2016-12-01

Full Text Available This study aims to identify research gaps on green purchasing topics and proposes several recommendations for future research. To explain the phenomenon of green products  purchase, this study uses Theory of Planned Behavior (TPB in framework. The research uses a  qualitative method approach by conducting a review of articles that traced through four popular journal providers: Ebsco, J-Stors, Proquest and Emeraldinsight. A literature search process held between April, 2015 until Juni, 2015 and resulted on 67 chosen articles. The outcome of the review identified four theoretical gaps, two  methodological gaps and one practical gap.

Tranexamic Acid in the Management of Upper Gastrointestinal Bleeding: an Evidence-based Case Report

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Nur Atikah

2015-04-01

Full Text Available Aim: to review the effectiveness of tranexamic acid therapy which has been proposed to reduce bleeding and in turn lower mortality rate. Methods: following literature searching based on our clinical question on Cochrane Library, PubMed, Clinical Key, EBSCO, Science Direct and Proquest, one systematic review that includes seven randomized controlled trials is obtained. The article meets validity and relevance criteria. Results: the systematic review found that there is no any clear evidence between intervention and control groups in term of mortality. Conclusion: the use of tranexamic acid to reduce mortality in patients with upper gastrointestinal bleeding is not recommended. Key words: tranexamic acid, mortality, upper gastrointestinal bleeding.

Proposal of Artifact for Motivational Analysis of Job CharacteristicsProposta de Artefato para Análise de Características Motivacionais do TrabalhoPropuesta de Artefacto para el Análisis de Características de Motivación en el Trabajo

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DE SORDI, José Osvaldo

2013-09-01

Full Text Available ABSTRACTThe theory for studying the motivational potential of certain jobs – or job design – was developed for the context of an industrial society, one that is quite different from our current information society. This research proposes a device for discussing and analyzing the key characteristics of motivation referring to jobs, according to the theories of job design and to the information society context. This is a pragmatic research, which applies the Design Science research strategy. Based on an inventory and on content analysis of scientific research concerning job design – published in the twenty-first century in the electronic databases of PROQUEST and EBSCO scientific articles – the motivational characteristics that are associated to this theory were identified, structured and presented in the proposed device.RESUMOA teoria para estudo do potencial motivador de postos de trabalho, denominada job design, foi desenvolvida para o contexto da sociedade industrial, bastante distinta da atual sociedade da informação. Esta pesquisa propõe um artefato voltado para discussão e análise de características centrais da motivação associadas aos postos de trabalho, segundo as teorias de job design e o contexto da sociedade da informação. Trata-se de uma pesquisa pragmática, com emprego da estratégia de pesquisa Design Science. A partir do inventário e da análise de conteúdo das pesquisas científicas sobre job design, publicadas no século XXI nas bases eletrônicas de artigos científicos PROQUEST e EBSCO, características motivacionais associadas às dimensões dessa teoria são identificadas, estruturadas e apresentadas no artefato proposto.RESUMENLa teoría para estudiar el potencial motivacional de puestos de trabajo, denominado Job Design, se desarrolló en el contexto de la sociedad industrial, muy diferente a la actual sociedad de la información. Esta investigación propone un artefacto desarrollado a partir del debate

Barriers and solutions to online learning in medical education - an integrative review.

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O'Doherty, Diane; Dromey, Marie; Lougheed, Justan; Hannigan, Ailish; Last, Jason; McGrath, Deirdre

2018-06-07

The aim of this study is to review the literature on known barriers and solutions that face educators when developing and implementing online learning programs for medical students and postgraduate trainees. An integrative review was conducted over a three-month period by an inter-institutional research team. The search included ScienceDirect, Scopus, BioMedical, PubMed, Medline (EBSCO & Ovid), ERIC, LISA, EBSCO, Google Scholar, ProQuest A&I, ProQuest UK & Ireland, UL Institutional Repository (IR), UCDIR and the All Aboard Report. Search terms included online learning, medical educators, development, barriers, solutions and digital literacy. The search was carried out by two reviewers. Titles and abstracts were screened independently and reviewed with inclusion/exclusion criteria. A consensus was drawn on which articles were included. Data appraisal was performed using the Critical Appraisal Skills Programme (CASP) Qualitative Research Checklist and NHMRC Appraisal Evidence Matrix. Data extraction was completed using the Cochrane Data Extraction Form and a modified extraction tool. Of the 3101 abstracts identified from the search, ten full-text papers met the inclusion criteria. Data extraction was completed on seven papers of high methodological quality and on three lower quality papers. Findings suggest that the key barriers which affect the development and implementation of online learning in medical education include time constraints, poor technical skills, inadequate infrastructure, absence of institutional strategies and support and negative attitudes of all involved. Solutions to these include improved educator skills, incentives and reward for the time involved with development and delivery of online content, improved institutional strategies and support and positive attitude amongst all those involved in the development and delivery of online content. This review has identified barriers and solutions amongst medical educators to the implementation of

Homofobia en estudiantes de enfermería Homofobia em estudantes de enfermagem Homophobia among nursing students

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Adalberto Campo-Arias

2010-09-01

Full Text Available La homofobia es una actitud negativa hacia personas homosexuales, frecuente en profesionales de la salud y con implicaciones en la salud pública. Este fenómeno había sido poco estudiado en estudiantes de enfermería. El objetivo fue conocer la prevalencia y las variables asociadas a la homofobia en estudiantes de enfermería. La revisión sistemática fue realizada de los artículos de investigación formal en EBSCO, Imbiomed, LILACS, MEDLINE, Ovid y ProQuest. Fueron incluidos los artículos publicados entre 1998 y 2008, escritos en español, inglés o portugués. Fueron utilizadas las palabras llave homophobia, homosexuality y nursing students. Se realizó un análisis descriptivo. Se revisaron ocho investigaciones. Entre el 7 y el 16% de los estudiantes presenta algún grado de homofobia. La homofobia es más común en varones y en los religiosos más conservadores. La homofobia es frecuente en estudiantes de enfermería y puede tener implicancias negativas para el ejercicio de la enfermería.A homofobia é uma atitude negativa em relação a pessoas homossexuais, frequente em profissionais da saúde, e com implicações na saúde pública. Este fenômeno havia sido pouco estudado em estudantes de enfermagem. O objetivo foi conhecer a prevalência e variáveis associadas à homofobia em estudantes de enfermagem. A revisão sistemática foi realizada nos artigos de pesquisa formal em EBSCO, Imbiomed, LILACS, MEDLINE, Ovid e ProQuest. Foram incluídos os artigos publicados entre 1998 e 2008, escritos em espanhol, inglês ou português. Foram utilizadas as palavras-chave homophobia, homosexuality e nursing students. Uma análise descritiva foi realizada. Oito pesquisas foram revisadas. Entre 7% e 16% dos estudantes apresenta algum grau de homofobia. A homofobia é mais comum em homens e nos religiosos mais conservadores. A homofobia é frequente em estudantes de enfermagem, e pode ter implicações negativas para o exercício da enfermagem

Necessidades de cuidados de enfermagem do cuidador da pessoa sob cuidados paliativos Necesidades de cuidados de enfermería del cuidador de la persona bajo cuidados paliativos Nursing care needs of the caregiver of persons under palliative care

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João Vicente César Fonseca

2011-02-01

Full Text Available O objetivo foi identificar as necessidades de cuidados de enfermagem do cuidador da pessoa em fase terminal e respectivas intervenções de enfermagem, recorrendo a uma revisão sistemática da literatura. Foi efectuada uma pesquisa na EBSCO e ProQuest e procurados artigos científicos em texto integral, publicados entre janeiro de 1998 a dez de 2008, usando as seguintes palavras-chave: "Palliative care", "Family", "Nursing" e "Needs". Foi utilizado o método de PI[C]OD e seleccionados 14 artigos do total de 77. As necessidades do cuidador da pessoa em fase terminal são: comunicação; relação de confiança e segurança; reconhecimento e operacionalização de desejos; preparação para o luto; necessidades de informação; capacitação; envolvimento nos cuidados; necessidades emocionais; necessidades espirituais e necessidades de descanso. Concluiu-se que a família apresenta diferentes necessidades que requerem uma intervenção personalizada do enfermeiro, através do estabelecimento de uma relação de confiançaEl objetivo fue identificar las necesidades de cuidados de enfermería del cuidador de la persona en fase terminal y sus intervenciones de enfermería, mediante una revisión sistemática de la literatura. Se realizó una búsqueda en EBSCO y ProQuest y busco Texto completo de artículos científicos, publicados entre el 1998 y el 2008, mediante el siguientes palabras clave: "Palliative care", "Family", "Nursing" y "Needs". El método PI[C]OD fueutilizado para seleccionar los 14 elementos seleccionados del total de 77. Las necesidades del cuidador de la persona en fase terminal fueran: la comunicación, la relación de confianza y la seguridad, el reconocimiento y la puesta en práctica de los deseos, la preparación para el duelo; necesidades de información, formación, participación en la atención, necesidades emocionales, espirituales y las necesidades de descanso. Se hay concluydo que la familia tiene diferentes

Antidiabetic Plants of Iran

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Ashrafeddin Goushegir

2011-10-01

Full Text Available To identify the antidiabetic plants of Iran, a systematic review of the published literature on the efficacy of Iranian medicinal plant for glucose control in patients with type 2 diabetes mellitus was conducted. We performed an electronic literature search of MEDLINE, Science Direct, Scopus, Proquest, Ebsco, Googlescholar, SID, Cochrane Library Database, from 1966 up to June 2010. The search terms were complementary and alternative medicine (CAM, diabetes mellitus, plant (herb, Iran, patient, glycemic control, clinical trial, RCT, natural or herbal medicine, hypoglycemic plants, and individual herb names from popular sources, or combination of these key words. Available Randomized Controlled Trials (RCT published in English or Persian language examined effects of an herb (limited to Iran on glycemic indexes in type 2 diabetic patients were included. Among all of the articles identified in the initial database search, 23 trials were RCT, examining herbs as potential therapy for type 2 diabetes mellitus. The key outcome for antidiabetic effect was changes in blood glucose or HbA1 c, as well as improves in insulin sensitivity or resistance. Available data suggest that several antidiabetic plants of Iran need further study. Among the RCT studies, the best evidence in glycemic control was found in Citrullus colocynthus, Ipomoea betatas, Silybum marianum and Trigonella foenum graecum.

Cloud computing: vývoj a současný stav

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Václav Sova Martinovský

2018-06-01

Full Text Available This article introduces the area of cloud computing with emphasis on businesses and organizations. It includes research of published papers on topic of cloud computing based on metaanalysis and SLR. Summary of relevant advantages both from the user and provider perspective was assembled as well as a list of barriers to even broader adoption of the cloud computing technology. Three databases (EBSCO, ProQuest and Web of Science were used as a source of data for the literature review phase. An analysis of the number of articles dealing with the cloud computing top has been carried out to date. The annual number of publications is compared to the size of the cloud computing market. Frequency analysis at a keyword level was performed in the 25,000-records dataset gathered from the WoS database. This analysis was conducted over the entire monitored period, and only for 2017, to capture the latest trends. There were identified the most frequently used key words in publications about cloud computing: virtualization, security, big data, mobile cloud computing and internet of things. For each of these keywords, a brief summary is given based on the literature search, with an emphasis on the outlook for the future and market position.

[Homophobia among nursing students].

Science.gov (United States)

Campo-Arias, Adalberto; Herazo, Edwin; Cogollo, Zuleima

2010-09-01

Homophobia is defined as a general negative attitude towards homosexual persons, with implications on public health. This fact has been less investigated among nursing students. The objective of this review was to learn about the prevalence of homophobia and its associated variables among nursing students. A systematic review was performed on original articles published in EBSCO, Imbiomed, LILACS, MEDLINE, Ovid, and ProQuest, including articles published between 1998 and 2008 in English, Portuguese and Spanish. Keywords used were homophobia, homosexuality, and nursing students. Descriptive analysis was performed. Eight studies were analyzed. The incidence of homophobia in nursing students is between 7% and 16%. Homophobia is more common among males and religious conservatism people. Homophobia is quite frequent in nursing students. This negative attitude toward homosexuality may affect services and care giving by nursing professions and could have negative implications in nursing practice.

Nonphysical effects of exergames on child and adolescent well-being: a comprehensive systematic review.

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Joronen, Katja; Aikasalo, Anna; Suvitie, Anne

2017-09-01

Exergames have the potential to promote physical activity among children and adolescents. They also have other important benefits, but knowledge about other than the physical effects of exergaming remains thin. To report the findings of a review of ten studies on the nonphysical effects of exergames on child and adolescent well-being. A broad search strategy was employed to identify relevant studies in CINAHL Ebsco Host, Ovid MEDLINE, Psycinfo ProQuest, Eric ProQuest, Scopus and Cochrane Library. The search timeframe was from January 2004 to April 2015. A comprehensive systematic review without meta-analysis was conducted on 10 quantitative, qualitative and mixed-methods intervention studies. The quality of these studies was assessed following the guidelines of the Joanna Briggs Institute. The data were analysed using a narrative synthesis approach. Exergaming was found to have some positive effects on self-concept, situational interest and motivation, enjoyment, psychological and social well-being, symptomatology and different learning experiences. However, two studies reported no effect on self-efficacy, and one study showed no intervention effect on self-esteem. The only follow-up study indicated that the enjoyment effect lasted for a few months. Most of the studies reviewed found that exergaming had positive effects. However, more research evidence is still needed. In particular, there is a need for better-validated instruments and follow-up research. © 2016 Nordic College of Caring Science.

Admission Criteria for MBA Programs

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Silvana Dakduk

2016-11-01

Full Text Available This paper reports a review of studies on admission criteria for MBA programs. The method consisted in a literary review based on a systematic search in international databases (Emerald, ABI/INFORM Global, ProQuest Education Journals, ProQuest European Business, ProQuest Science Journal, ProQuest Research Library, ProQuest Psychology Journals, ProQuest Social Science Journals and Business Source Complete of studies published from January 1990 to December 2013, which explore the academic performance of students or graduates of MBA programs. A quantitative review was performed. Results show that most researchers studied relations between GMAT (Graduate Management Admission Test and UGPA (Undergraduate Grade Point Average as predictors of GGPA (Graduate Grade Point Average. On the other hand, work experience and personal traits (such as personality, motivation, learning strategies, self-efficacy beliefs and achievement expectations and their relation with GGPA had been less studied, and results are not consistent enough to consider them valid predictors of student performance at this time.

[Evolution of the concept of positive mental health: a systematic review].

Science.gov (United States)

Muñoz, Cristóbal Ovidio; Restrepo, Diego; Cardona, Doris

2016-03-01

Objective Characterize the theoretical models that have underpinned empirical research on the concept of positive mental health from the time it first emerged in the field of health up to the present. Methods A systematic search of the literature was conducted in PubMed, EBSCO (including Academic Search Complete, ERIC, Academic Source, MasterFILE Premier, MedicLatina, MEDLINE, and the Psychology and Behavioral Sciences Collection), Science Direct, Psicodoc, Springer Link, Taylor & Francis, Wiley Online Library, Directory of Open Access Journals (DOAJ), Redalyc, SciELO, Ovid, Embase, and ProQuest (including Health and Medical Complete, the Nursing and Allied Health Source, Psychology Journals, and Social Science Journals). The search criterion was the descriptor "positive mental health." Results Of 51 studies consulted, 84% used a quantitative approach; 84% were published in English; and the same percentage were conducted between 2000 and 2014. The concept of positive mental health has been applied in essentially five different ways: as the absence of disease; as the subject of the Jahoda model; as a combination of factors on the Lluch scale; as a synonym of well-being; and as part of more complex scales of measurement. Conclusions Positive mental health should not be viewed as the opposite of a mental disorder, the absence of disease, or the sum of a given set of personal conditions. It is important to move forward in the development of conceptual models that will serve as a basis for approaching mental health from the perspective of health promotion.

Significados atribuidos por el paciente trasplantado al órgano recibido, al donante, a la vida y a la muerte

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Simone Fuica

2016-01-01

Full Text Available El trasplante de órganos o tejidos es una opción terapéutica viable para el tratamiento de enfermedades crónicas en estadios terminales y sin compromiso vital. Varias investigaciones y planes de intervención han girado en torno a la dimensión biológica del trasplante y a la promoción de la donación. No obstante, el interés por la experiencia psicosocial y la calidad de vida de los receptores en este proceso, ha aumentado durante la última década. De allí que el objetivo del presente trabajo sea comprender el significado atribuido por el paciente trasplantado al órgano, al donante, a la vida y a la muerte. Método. Se realizó una revisión sistemática de la literatura en la que se consultaron 51 artículos obtenidos en seis bases de datos especializadas (Ebsco Host: Academic Search, Ebsco Host Psychology & Behavioral Sciences Collection, Proquest, Pubmed, Science Direct & Taylor and Francis Online. Resultados. Aunque el interés en el tema de la experiencia de los receptores durante el proceso de trasplante ha venido en aumento, la investigación de los aspectos psicológicos implicados en el trasplante de órganos y tejidos no es concluyente. Conclusión. Se requiere mayor investigación que proporcione elementos para predecir y explicar la conducta de quienes son trasplantados.

Process innovation in tourism management: A review of the literature

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Irma Elia Damian

2015-06-01

Full Text Available Purpose: Identifying gaps in the academic literature regarding three great management topics: Process Innovation, Tourism Management and Process Innovation in Tourism Management in order to establish the conceptual framework and identify future lines of research. Design/methodology: For this research, a systematic review was conducted on items obtained from accredited databases recognized as EBSCO, OECD, among others, the literature on Process Innovation, Tourism Management and Process Innovation in Tourism Management. Findings: As a result of this review the opportunity for academic research was identified, this due to a theoretical gap which exists on the subject of Process Innovation in Tourism Management. Research limitations/implications: For the realization of this research the databases used were: EBSCO, Emerald, OECD, ProQuest and Scientific Research. The authors are aware that there may be other papers of the subject that were not considered in this article. Practical implications: Following this research the road to research other issues is opened, such as: what impact does it have and how do Process Innovations in Tourism Management are carried along in organizations belonging to Sector Originality/value: The knowledge of how process innovation in tourism management occurs in hospitality organizations gives a better understanding and comprehension of this subjects opening the possibility, for other organizations, of adopting and adapting them in areas related to customer satisfaction, improvement of the image of the organization and quality of the service offered.

Interventions for promoting participation in shared decision-making for children with cancer.

Science.gov (United States)

Coyne, Imelda; O'Mathúna, Dónal P; Gibson, Faith; Shields, Linda; Leclercq, Edith; Sheaf, Greg

2016-11-29

This is an update of the Cochrane systematic review of shared decision-making (SMD) making published in 2013. Children's rights to have their views heard in matters that affect their lives are now well established since the publication of the UN Convention treaty (1989). Children with cancer generally prefer to be involved in decision-making and consider it important that they have the opportunity to take part in decision-making concerning their health care, even in end-of-life decisions. There is considerable support for involving children in healthcare decision-making at a level commensurate with their experience, age and abilities. Thus, healthcare professionals and parents need to know how they should involve children in decision-making and what interventions are most effective in promoting SDM for children with cancer. To examine the effects of SDM interventions on the process of SDM for children with cancer who are aged four to 18 years. We searched the following sources for the review: Cochrane Central Register of Controlled Studies (CENTRAL) (the Cochrane Library 2016, Issue 1); PubMed (NLM) (1946 to February 2016); Embase (Ovid) (1974 to February 2016); CINAHL (EBSCO) (1982 to February 2016); ERIC (ProQuest) (1966 to February 2016); PsycINFO (EBSCO) (1806 to February 2016); BIOSIS (Thomson Reuters) (1980 to December 2009 - subscription ceased at that date); ProQuest Dissertations and Theses (1637 to February 2016); and Sociological Abstracts (ProQuest) (1952 to February 2016). In addition we searched the reference lists of relevant articles and review articles and the following conference proceedings (2005 up to and including 2015): American Academy on Communication in Healthcare (AACH), European Society for Medical Oncology (ESMO), European CanCer Organisation (ECCO), European Association for Communication in Healthcare (EACH), International Conference on Communication in Healthcare (ICCH), International Shared Decision Making Conference (ISDM), Annual

Comparison of three web-scale discovery services for health sciences research.

Science.gov (United States)

Hanneke, Rosie; O'Brien, Kelly K

2016-04-01

The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries. Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris's Primo, and ProQuest's Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content. All WSD tools returned between 50%-60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE. None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%-60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools' value as a supplement to traditional resources for health sciences researchers.

An integrated organisation-wide data quality management and information governance framework: theoretical underpinnings.

Science.gov (United States)

Liaw, Siaw-Teng; Pearce, Christopher; Liyanage, Harshana; Liaw, Gladys S S; de Lusignan, Simon

2014-01-01

Increasing investment in eHealth aims to improve cost effectiveness and safety of care. Data extraction and aggregation can create new data products to improve professional practice and provide feedback to improve the quality of source data. A previous systematic review concluded that locally relevant clinical indicators and use of clinical record systems could support clinical governance. We aimed to extend and update the review with a theoretical framework. We searched PubMed, Medline, Web of Science, ABI Inform (Proquest) and Business Source Premier (EBSCO) using the terms curation, information ecosystem, data quality management (DQM), data governance, information governance (IG) and data stewardship. We focused on and analysed the scope of DQM and IG processes, theoretical frameworks, and determinants of the processing, quality assurance, presentation and sharing of data across the enterprise. There are good theoretical reasons for integrated governance, but there is variable alignment of DQM, IG and health system objectives across the health enterprise. Ethical constraints exist that require health information ecosystems to process data in ways that are aligned with improving health and system efficiency and ensuring patient safety. Despite an increasingly 'big-data' environment, DQM and IG in health services are still fragmented across the data production cycle. We extend current work on DQM and IG with a theoretical framework for integrated IG across the data cycle. The dimensions of this theory-based framework would require testing with qualitative and quantitative studies to examine the applicability and utility, along with an evaluation of its impact on data quality across the health enterprise.

THE INFLUENCE OF MUSIC ON CONSUMER BEHAVIOR

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Eduardo Biagi Almeida Santos

2013-11-01

Full Text Available This present paper shows the influence of music used in a retail environment in relation to consumer behavior. For obtaining the information, we based this research on a literature review in national and international journals, by 4 databases including: Proquest, EBSCO Host, CAPES periódicos and Mendeley, in the period of 2008 and 2012, by the keywords: music behavior, music in retail environment, background music, music consumer, environmental music, music and consumer behavior and music in purchase decision. The use of music has been applied in traditional areas such as psychology, trough the discipline of environmental psychology (DONOVAN & ROSSITER, 1982.; marketers use this tool as a motivator in a purchase decision in different shopping environments. This paper shows that there is an influence of background music in purchase decision but it’s still needs an explanations of some variables. At the end this paper will present some suggestions for future research.

What are Bogus Journal

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Willy A. Renandya

2014-11-01

Full Text Available Abstract The purpose of this paper is to warn novice researchers/writers of the danger of publishing in journals of questionable quality (often referred to as bogus, scam or predatory journals and highlight key characteristics of these journals and their method of operation. Understanding the characteristics and how they operate could help us avoid publishing our work in scam journals. These journals claim (falsely that they employ a blind review process by experts in the field, promise quick turnaround, claim legitimacy by quoting the ISSN and listing a number of databases in which they are indexed (e.g., EBSCO, DOAJ and PROQUEST. The paper outlines 15 reasons why as members of the academic community we should shun journals of dubious quality. The key message of this paper is that before we send our scholarly work to academic journals, we need to invest time doing our due diligence, making sure that our target journal is a legitimate and respectable outlet for our work.

Technology, Educator Intention, and Relationships in Virtual Learning Spaces: A Qualitative Metasynthesis.

Science.gov (United States)

Gdanetz, Lorraine M; Hamer, Mika K; Thomas, Eileen; Tarasenko, Lindsey M; Horton-Deutsch, Sara; Jones, Jacqueline

2018-04-01

A main concern that remains with the continued growth of online nursing education programs is the way educator and student relationships can be affected by new technologies. This interpretive study aims to gain an understanding of how technology influences the development of interpersonal relationships between the student and faculty in a virtual learning environment. Using an established structured approach to qualitative metasynthesis, a search was conducted using PubMed, EBSCO, CINAHL, Medline, ProQuest, Ovid Nursing databases, and Google Scholar, focused on caring and relational aspects of online nursing education. Technology alters communication, thereby positioning the intentionality of the educator at the heart of interpersonal relationship development in virtual learning spaces. This interpretive synthesis of prior qualitative research supports the development of a framework for online nursing courses, the need for continuing education of nursing faculty, the value of caring intentions, and enhancement of the educator's technological proficiency. [J Nurs Educ. 2018;57(4):197-202.]. Copyright 2018, SLACK Incorporated.

Influence of Intimate Partner Violence and Depression on Undergraduate Nursing Students: A Literature Review.

Science.gov (United States)

Garner, Andrea K; Sheridan, Daniel J

2017-07-01

Intimate partner violence (IPV) and dating violence is a significant problem among college-age students. IPV has an associative outcome of depression and lower academic performance, but it is unknown how it relates to undergraduate nursing students. Two literature searches were performed for IPV and depression from a combination of 87 databases including EBSCO, Proquest, Nursing at OVID, Medline, PubMed, CINAHL, PsycARTICLES, JSTOR, SAGE journals, and Google Scholar. Initial results yielded 24,675 research studies on IPV, dating violence, and depression. Forty-eight level-three studies were identified using the John Hopkins School of Nursing evidence-based practice model, including 42 nonexperimental studies, three meta-syntheses, and three governmental studies. Relevant data on the prevalence rates of IPV and depression among nursing students are lacking. IPV and dating violence among college students places them at a higher risk for failure and poor academic performance. [J Nurs Educ. 2017;56(7):397-403.]. Copyright 2017, SLACK Incorporated.

Electronic Resources Management System: Recommendation Report 2017

KAUST Repository

Ramli, Rindra M.

2017-05-01

This recommendation report provides an overview of the selection process for the new Electronic Resources Management System. The library has decided to move away from Innovative Interfaces Millennium ERM module. The library reviewed 3 system as potential replacements namely: Proquest 360 Resource Manager, Ex Libris Alma and Open Source CORAL ERMS. After comparing and trialling the systems, it was decided to go for Proquest 360 Resource Manager.

Семинар «Система интегрированного поиска по электронным ресурсам EBSCO Discovery Service»: материалы семинара. Екатеринбург, 17 апреля 2012 г.

OpenAIRE

Соколов, А.; Вольф, Клаус

2012-01-01

17 апреля 2012 г. в Зональной научной библиотеке состоялся семинар «Система интегрированного поиска по электронным ресурсам: EBSCO Discovery Service». Программа семинара: 1. Интегрированный поиск EBSCO Discovery Service (Андрей Соколов, представитель компании EBSCO Publishing в России, Белоруссии и Молдове); 2. Технические аспекты работы EBSCO Discovery Service (Клаус Вольф, инженер-программист компании EBSCO Publishing (Германия)); 3. Демонстрация работы EDS в УрФУ....

Information Security Issues in a Digital Library Environment: A Literature Review = Dijital Kütüphane Ortamında Bilgi Güvenliği Sorunları: Literatür Değerlendirmesi

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Anday, Audrey

2012-01-01

Full Text Available This paper aimed to explore the literature on security issues that digital libraries should consider in managing digital resources. Books on information security and network security were consulted as well as several databases such as ERIC, Ebrary, LISA, Science Direct, EbscoHost, ISI, Google Scholar, ProQuest, Emerald Insight, ACM were searched to understand what particular aspect of information security and privacy in digital libraries exist from 2000 - 2010. Security in digital libraries is an issue of the most important, and should be considered carefully in creating policies and strategic plans of institutions wanting to set up a digital library. This paper focused on the four main streams that concerns security in the digital environment, namely: infrastructure, digital content, users and standards and legal issues. This literature review also built upon previous literature reviews, and is one of the few of its kind in the topic. / Bu çalışma dijital kütüphanelerin kaynakların yönetiminde göz önünde bulundurmasıgereken güvenlik sorunlarına ilişkin literatürü ortaya koymayı amaçlamaktadır. Bilgi Güvenliği, Ağ Güvenliği, Kişisel Gizlilik konuları üzerine 2000 - 2010 yıl aralığını kapsayan kitaplar ve makaleler ERIC, Ebrary, LISA, Science Direct, EbscoHost, ISI, Google Akademik, ProQuest, Emerald Insight ve ACM gibi çeşitli veri tabanlarından taranmıştır. İncelenen literatürden elde edilen sonuçlara göre,bilgi güvenliği dijital kütüphaneler için son derece önemli bir konudur ve dijitalleşme sürecinde bir kütüphane, güvenlik politikalarını ve stratejik planlarını dikkatle göz önünde bulundurmalıdır. Bu araştırmada dijital ortamda güvenliği ilgilendiren Altyapı, Dijital İçerik, Kullanıcılar, Standartlar ve Hukuki Konular olmak üzere dört ana madde üzerinde durulmuştur. Bu çalışma ayrıca daha önceki literatür taramalarını da kapsamaktadır.

Comparison of three web-scale discovery services for health sciences research*

Science.gov (United States)

Hanneke, Rosie; O'Brien, Kelly K.

2016-01-01

Objective The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries. Methods Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris's Primo, and ProQuest's Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content. Results All WSD tools returned between 50%–60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE. Conclusions None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%–60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools' value as a supplement to traditional resources for health sciences researchers. PMID:27076797

Family entrepreneurship in the Czech Republic on the verge of first generation handover

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Naděžda Petrů

2017-12-01

Full Text Available Family is an integral part of society in all cultures and time periods. Its mission is to raise the next generation, which will be able to continue and further develop knowledge and experience of the previous generation. The modern history of family entrepreneurship in Czech Republic restarted back in 1989, i.e., straight after the fall of the communist regime and restoration of the democratic system. People went into business with enthusiasm and the most successful ones among then now stand on the verge of generation handover. The literature review prepared using the desk-research method is mainly based on foreign professional sources – monographic publications, scientific articles published in professional magazines, accessed from Proquest, Web of Science, Ebsco, Scopus and some other databases. The objective of our quantitative research was to evaluate, based on parameter E (Experience, the generational representation of family members in relation to leadership and ownership of businesses. Quantitative research was based on the use of statistical and graphical data processing methods, including SPSS software, applied for the authors’ own empirical investigation based on the international methodology of family company review through the F-PEC scale, the Experience parameter (Astrachan et al., 2002. It was shown that accumulation of business experience in business families is still mainly concentrated on the founding generation of entrepreneurs. In the conclusion of the paper, deduction and generalisation methods have been applied.

Self-Medication Practice with Nonprescription Medication among University Students: a review of the literature

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Dedy Almasdy

2011-09-01

Full Text Available Objective: To review the literature relating to self-medicationpractice with nonprescription medication among universitystudents.Methods: A narrative review of studies on self-medicationpractice with nonprescription medication among universitystudent was performed. An extensive literature search wasundertaken using indexing services available at UniversitiSains Malaysia (USM library. The following keywords wereused for the search: self-care, self-medication, over-thecountermedicine, nonprescription medicine, minor illnesses,minor ailment, university population and communitypharmacy. Electronic databases searched were Science Direct,Medline, ISI Web of Knowledge, Inside Web, JSTOR, SpringerLink, Proquest, Ebsco Host and Google Scholar. Theseelectronic databases were searched for full text paperspublished in English.Results: Eleven studies were identified. In general, the reviewhas shown that self-medication practice with nonprescriptionmedication highly prevalence among university students. Thereasons for self-medication are vary among this populationand the main symptoms leading to self-medication areheadache or minor pain; fever, flu, cough, or cold; anddiarrhoea.The common medication is analgesic, antipyreticproducts, cough and cold remedies, anti allergy andvitamins or minerals. The sources of the medicines arepharmacy, home medicine cabinet, supermarket/shopand other person such as family, friend, neighbours andclassmates. The sources of drug information are familymember, previous experience, pharmacy salesman,doctor or nurse, advertisement and others. The reviewalso has shown that the self-medication practice couldhave many problems.Conclusions: The review provides insights about theself-medication practices among the university students.These practices were highly prevalence among universitystudents. The symptoms leading to self-medication arevary, thus the medication used and the medicationsources. It needs an adequate drug information

An integrated organisation-wide data quality management and information governance framework: theoretical underpinnings

Directory of Open Access Journals (Sweden)

Siaw-Teng Liaw

2014-10-01

Full Text Available Introduction Increasing investment in eHealth aims to improve cost effectiveness and safety of care. Data extraction and aggregation can create new data products to improve professional practice and provide feedback to improve the quality of source data. A previous systematic review concluded that locally relevant clinical indicators and use of clinical record systems could support clinical governance. We aimed to extend and update the review with a theoretical framework.Methods We searched PubMed, Medline, Web of Science, ABI Inform (Proquest and Business Source Premier (EBSCO using the terms curation, information ecosystem, data quality management (DQM, data governance, information governance (IG and data stewardship. We focused on and analysed the scope of DQM and IG processes, theoretical frameworks, and determinants of the processing, quality assurance, presentation and sharing of data across the enterprise.Findings There are good theoretical reasons for integrated governance, but there is variable alignment of DQM, IG and health system objectives across the health enterprise. Ethical constraints exist that require health information ecosystems to process data in ways that are aligned with improving health and system efficiency and ensuring patient safety. Despite an increasingly ‘big-data’ environment, DQM and IG in health services are still fragmented across the data production cycle. We extend current work on DQM and IG with a theoretical framework for integrated IG across the data cycle.Conclusions The dimensions of this theory-based framework would require testing with qualitative and quantitative studies to examine the applicability and utility, along with an evaluation of its impact on data quality across the health enterprise.

2010-2011 Queensland floods: using Haddon's Matrix to define and categorise public safety strategies.

Science.gov (United States)

Zhong, Shuang; Clark, Michele; Hou, Xiang-Yu; Zang, Yu-Li; FitzGerald, Gerry

2013-08-01

The 2010-2011 Queensland floods resulted in the most deaths from a single flood event in Australia since 1916. This article analyses the information on these deaths for comparison with those from previous floods in modern Australia in an attempt to identify factors that have contributed to those deaths. Haddon's Matrix, originally designed for prevention of road trauma, offers a framework for understanding the interplay between contributing factors and helps facilitate a clearer understanding of the varied strategies required to ensure people's safety for particular flood types. Public reports and flood relevant literature were searched using key words 'flood', 'fatality', 'mortality', 'death', 'injury' and 'victim' through Google Scholar, PubMed, ProQuest and EBSCO. Data relating to reported deaths during the 2010-2011 Queensland floods, and relevant data of previous Australian flood fatality (1997-2009) were collected from these available sources. These sources were also used to identify contributing factors. There were 33 deaths directly attributed to the event, of which 54.5% were swept away in a flash flood on 10 January 2011. A further 15.1% of fatalities were caused by inappropriate behaviours. This is different to floods in modern Australia where over 90% of deaths are related to the choices made by individuals. There is no single reason why people drown in floods, but rather a complex interplay of factors. The present study and its integration of research findings and conceptual frameworks might assist governments and communities to develop policies and strategies to prevent flood injury and fatalities. © 2013 Australasian College for Emergency Medicine and Australasian Society for Emergency Medicine.

Homofobia en estudiantes de trabajo social

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Adalberto Campo-Arias

2013-01-01

Full Text Available La homofobia es una actitud negativa ante personas homosexuales. Varios estudios infor - man altos niveles de homofobia en estudiantes universitarios. Estimar el nivel de homofo - bia en estudiantes de trabajo social. Se llevó a cabo una revisión sistemática de las inves - tigaciones formales disponibles en Ebsco, Imbiomed, Lilacs, MedLine, Ovid y ProQuest. Se incluyeron artículos publicados en español, inglés o portugués entre 1999 y 2010. Las palabras clave para la búsqueda fueron “homophobia”, “homosexuality”, “students” y “social work”. Se realizó un análisis descriptivo de los hallazgos. Un grupo de tres artícu - los se incluyeron en esta revisión. Entre el 6,5 y 77,4% de los estudiantes de trabajo social mostraron altos niveles de homofobia. Al menos uno de cada quince estudiantes de trabajo social informan altos niveles homofobia. En estudiantes colombianos de trabajo social es necesario investigar la presencia de homofobia.

The perfect marriage: Solution-focused therapy and motivational interviewing in medical family therapy

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Gage Stermensky

2014-01-01

Full Text Available Medical family therapy has many potential uses in behavioral medicine and primary care. Current research was reviewed to determine the most advantageous way to apply solution-focused therapy and motivational interviewing as a perfect marriage in medical family therapy. An extensive literature review was done in the following databases for medical family therapy: Proquest, EBSCO, Medline, and PsychInfo. The search resulted in 86 relevant articles, of which 46 of the most recent were selected for review. Medical family therapy lacks current research that supports solution-focused therapy or motivational interviewing. However, evidence supports the use of solution-focused therapy as a brief format, as well as the closely related intervention, motivational interviewing. While medical family therapy presents many hopeful possibilities in the fields of behavioral medicine, psychology, and marriage and family therapy, little evidence currently exists for the most effective implementation. This review found evidence supporting solution-focused therapy and motivational interviewing as the perfect marriage of the collaborative team approaches for the future implementation and use of specific interventions in medical family therapy.

Colloids Versus Albumin in Large Volume Paracentesis to Prevent Circulatory Dysfunction: Evidence-based Case Report.

Science.gov (United States)

Widjaja, Felix F; Khairan, Paramita; Kamelia, Telly; Hasan, Irsan

2016-04-01

Large volume paracentesis may cause paracentesis induced circulatory dysfunction (PICD). Albumin is recommended to prevent this abnormality. Meanwhile, the price of albumin is too expensive and there should be another alternative that may prevent PICD. This report aimed to compare albumin to colloids in preventing PICD. Search strategy was done using PubMed, Scopus, Proquest, dan Academic Health Complete from EBSCO with keywords of "ascites", "albumin", "colloid", "dextran", "hydroxyethyl starch", "gelatin", and "paracentesis induced circulatory dysfunction". Articles was limited to randomized clinical trial and meta-analysis with clinical question of "In hepatic cirrhotic patient undergone large volume paracentesis, whether colloids were similar to albumin to prevent PICD". We found one meta-analysis and four randomized clinical trials (RCT). A meta analysis showed that albumin was still superior of which odds ratio 0.34 (0.23-0.51). Three RCTs showed the same results and one RCT showed albumin was not superior than colloids. We conclude that colloids could not constitute albumin to prevent PICD, but colloids still have a role in patient who undergone paracentesis less than five liters.

Welfare-to-work interventions and their effects on the mental and physical health of lone parents and their children.

Science.gov (United States)

Gibson, Marcia; Thomson, Hilary; Banas, Kasia; Lutje, Vittoria; McKee, Martin J; Martin, Susan P; Fenton, Candida; Bambra, Clare; Bond, Lyndal

2018-02-26

Lone parents in high-income countries have high rates of poverty (including in-work poverty) and poor health. Employment requirements for these parents are increasingly common. 'Welfare-to-work' (WtW) interventions involving financial sanctions and incentives, training, childcare subsidies and lifetime limits on benefit receipt have been used to support or mandate employment among lone parents. These and other interventions that affect employment and income may also affect people's health, and it is important to understand the available evidence on these effects in lone parents. To assess the effects of WtW interventions on mental and physical health in lone parents and their children living in high-income countries. The secondary objective is to assess the effects of welfare-to-work interventions on employment and income. We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, PsycINFO EBSCO, ERIC EBSCO, SocINDEX EBSCO, CINAHL EBSCO, Econlit EBSCO, Web of Science ISI, Applied Social Sciences Index and Abstracts (ASSIA) via Proquest, International Bibliography of the Social Sciences (IBSS) via ProQuest, Social Services Abstracts via Proquest, Sociological Abstracts via Proquest, Campbell Library, NHS Economic Evaluation Database (NHS EED) (CRD York), Turning Research into Practice (TRIP), OpenGrey and Planex. We also searched bibliographies of included publications and relevant reviews, in addition to many relevant websites. We identified many included publications by handsearching. We performed the searches in 2011, 2013 and April 2016. Randomised controlled trials (RCTs) of mandatory or voluntary WtW interventions for lone parents in high-income countries, reporting impacts on parental mental health, parental physical health, child mental health or child physical health. One review author extracted data using a standardised extraction form, and another checked them. Two authors independently assessed risk of bias and

Welfare-to-work interventions and their effects on the mental and physical health of lone parents and their children.

Science.gov (United States)

Gibson, Marcia; Thomson, Hilary; Banas, Kasia; Lutje, Vittoria; McKee, Martin J; Martin, Susan P; Fenton, Candida; Bambra, Clare; Bond, Lyndal

2017-08-20

Lone parents in high-income countries have high rates of poverty (including in-work poverty) and poor health. Employment requirements for these parents are increasingly common. 'Welfare-to-work' (WtW) interventions involving financial sanctions and incentives, training, childcare subsidies and lifetime limits on benefit receipt have been used to support or mandate employment among lone parents. These and other interventions that affect employment and income may also affect people's health, and it is important to understand the available evidence on these effects in lone parents. To assess the effects of WtW interventions on mental and physical health in lone parents and their children living in high-income countries. The secondary objective is to assess the effects of welfare-to-work interventions on employment and income. We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, PsycINFO EBSCO, ERIC EBSCO, SocINDEX EBSCO, CINAHL EBSCO, Econlit EBSCO, Web of Science ISI, Applied Social Sciences Index and Abstracts (ASSIA) via Proquest, International Bibliography of the Social Sciences (IBSS) via ProQuest, Social Services Abstracts via Proquest, Sociological Abstracts via Proquest, Campbell Library, NHS Economic Evaluation Database (NHS EED) (CRD York), Turning Research into Practice (TRIP), OpenGrey and Planex. We also searched bibliographies of included publications and relevant reviews, in addition to many relevant websites. We identified many included publications by handsearching. We performed the searches in 2011, 2013 and April 2016. Randomised controlled trials (RCTs) of mandatory or voluntary WtW interventions for lone parents in high-income countries, reporting impacts on parental mental health, parental physical health, child mental health or child physical health. One review author extracted data using a standardised extraction form, and another checked them. Two authors independently assessed risk of bias and

An Overview of Research on Marketing Ethics Education

Directory of Open Access Journals (Sweden)

Daniela Hrehová

2016-12-01

Full Text Available Purpose – Last two decades have seen a marked increase in the interest given to the field of business ethics, particularly, marketing ethics. Marketing ethics provides an innumerable amount of materials and topics for open discussion, as well as for application in practice. Our intention is to open up a space within which to promote timely debate on contemporary marketing education. Design/Methodology/Approach – Monitoring of academic journals in the area of marketing ethics tuition accessible in electronic databases (EBSCO, ProQuest, Web of Science, Google Scholar by means of the Centre for scientific-technical information SR portal. The work is based on the analysis of thematic categories, and the number of publications and citations. Results are presented in a comprehensive and illustrative manner. Findings and implications – Discussions about marketing ethics and ethical issues are useful. Students need preparation, mentoring and counselling while solving ethical problems, which occur during marketing ethics tuition in the academic field, but also in practice. Academic and scientific sources in the area of marketing ethics education are an excellent “instruction”. Limitations – The limitation of this research can be seen in the fact that we focused especially on the marketing aspect of the ethics education. In further research, other fields of interest should be addressed, for example management or practices in commerce, etc. Originality – The aim of the article is to map current trends in research in the field of marketing ethics education, as presented in scientific journals.

Effect of Heart Rate Variability Biofeedback on Sport Performance, a Systematic Review.

Science.gov (United States)

Jiménez Morgan, Sergio; Molina Mora, José Arturo

2017-09-01

Aim is to determine if the training with heart rate variability biofeedback allows to improve performance in athletes of different disciplines. Methods such as database search on Web of Science, SpringerLink, EBSCO Academic Search Complete, SPORTDiscus, Pubmed/Medline, and PROQUEST Academic Research Library, as well as manual reference registration. The eligibility criteria were: (a) published scientific articles; (b) experimental studies, quasi-experimental, or case reports; (c) use of HRV BFB as main treatment; (d) sport performance as dependent variable; (e) studies published until October 2016; (f) studies published in English, Spanish, French or Portuguese. The guidelines of the PRISMA statement were followed. Out of the 451 records found, seven items were included. All studies had a small sample size (range from 1 to 30 participants). In 85.71% of the studies (n = 6) the athletes enhanced psychophysiological variables that allowed them to improve their sport performance thanks to training with heart rate variability biofeedback. Despite the limited amount of experimental studies in the field to date, the findings suggest that heart rate variability biofeedback is an effective, safe, and easy-to-learn and apply method for both athletes and coaches in order to improve sport performance.

Supervisors' experiences of workplace supervision of nursing and paramedic students in rural settings: a scoping review.

Science.gov (United States)

Trede, Franziska; McEwen, Celina; Kenny, Amanda; O'Meara, Peter

2014-05-01

We present our findings from a scoping review that sought to identify what is known about nursing and paramedic clinical supervisors' experiences of their supervision practices in rural settings. Our interest in these two groups is based on the central role that nurses and paramedics play in rural health care. Scoping reviews support identification of a broad range of literature, including all types of study designs. We adopted Arksey and O'Malley's five-stage approach: identifying the research question; identifying relevant studies; study selection; charting the data; and collating, summarising and reporting results. Databases searched included Academic Search Complete, Springer, Factiva, ProQuest, Ebsco, Informit, VOCEDplus and Scopus. Based on our research question and inclusion and exclusion criteria we selected relevant literature and summarised and reported it using Arksey and O'Malley's framework. The review yielded five articles from four countries: Sweden, Belgium, Malaysia and Australia. From this scoping review, we identified key themes related to supervisors' experiences, including clarification of expectations, support from managers and colleagues, the need for shared understanding between university, students and supervisors and required skills and competence in supervising students. © 2013.

Types of unethical tactics in negotiation between buyer and supplier

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Božidar

2014-06-01

Full Text Available Research Question (RQ: This article researches the kinds of unethical tactics, which can use customers or suppliers to achieve better negotiating outcome. Purpose: Determine which tactics they used, from where they rise from and what the other authors about resulting of using unethical tactics. Method: Analysis of articles from Ebsco and ProQuest databases. Results: Getting of ethical knowledge, types of unethical negotiation tactics and awareness of the limits of ethics in the negotiations process between suppliers and customers. Organization: Managers can gain the recognition of unethical tactics, their using in the negotiation process and the construction of negotiating temperament or even competence. The research contributes to a better achievement of the performance of the organization. The results of this article can contribute to the negotiators decision-making on the use of unethical tactics. Society: Ethical negotiation helps to improve the reputation and respect of the organization, which represents the negotiator. Originality: In a review of existing articles and searches we have not found similar studies to investigate the unethical negotiating tactics. Limitations/Future Research: The article is limited to fifteen articles and three books.

Learning concepts of cinenurducation: an integrative review.

Science.gov (United States)

Oh, Jina; Kang, Jeongae; De Gagne, Jennie C

2012-11-01

Cinenurducation is the use of films in both didactic and clinical nursing education. Although films are already used as instructional aids in nursing education, few studies have been made that demonstrate the learning concepts that can be attributed to this particular teaching strategy. The purpose of this paper is to describe the learning concepts of cinenurducation and its conceptual metaphor based on a review of literature. The databases CINAHL, MEDLINE, PsychINFO, ERIC, EBSCO, ProQuest Library Journal, and Scopus databases were searched for articles. Fifteen peer-reviewed articles were selected through title and abstract screening from "films in nursing" related articles found in internationally published articles in English from the past 20 years. Four common concepts emerged that relate to cinenurducation: (a) student-centered, (b) experiential, (c) reflective, and (d) problem-solving learning. Current literature corroborates cinenurducation as an effective teaching strategy with its learning activities in nursing education. Future studies may include instructional guides of sample films that could be practically used in various domains to teach nursing competencies, as well as in the development of evaluation criteria and standards to assess students' learning outcomes. Copyright © 2012 Elsevier Ltd. All rights reserved.

Effect of Divergence in Patients' Socioeconomic Background on their ...

African Journals Online (AJOL)

A validated questionnaire was completed by patients walking into community pharmacies. The source of advice (clinical specialist, general practitioner, pharmacist, nurse ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, .... patients tend to go back to their specialists for.

A review of e-textiles in neurological rehabilitation: How close are we?

Science.gov (United States)

McLaren, Ruth; Joseph, Frances; Baguley, Craig; Taylor, Denise

2016-06-21

Textiles able to perform electronic functions are known as e-textiles, and are poised to revolutionise the manner in which rehabilitation and assistive technology is provided. With numerous reports in mainstream media of the possibilities and promise of e-textiles it is timely to review research work in this area related to neurological rehabilitation.This paper provides a review based on a systematic search conducted using EBSCO- Health, Scopus, AMED, PEDro and ProQuest databases, complemented by articles sourced from reference lists. Articles were included if the e-textile technology described had the potential for use in neurological rehabilitation and had been trialled on human participants. A total of 108 records were identified and screened, with 20 meeting the broad review inclusion criteria. Nineteen user trials of healthy people and one pilot study with stroke participants have been reported.The review identifies two areas of research focus; motion sensing, and the measurement of, or stimulation of, muscle activity. In terms of motion sensing, E-textiles appear able to reliably measure gross movement and whether an individual has achieved a predetermined movement pattern. However, the technology still remains somewhat cumbersome and lacking in resolution at present. The measurement of muscle activity and the provision of functional electrical stimulation via e-textiles is in the initial stages of development but shows potential for e-textile expansion into assistive technologies.The review identified a lack of high quality clinical evidence and, in some cases, a lack of practicality for clinical application. These issues may be overcome by engagement of clinicians in e-textile research and using their expertise to develop products that augment and enhance neurological rehabilitation practice.

Abordagens de avaliação de ativos intangíveis: uma revisão da literatura = Intangible asset evaluation approaches: a literature review

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Stephanie Kalynka Rocha Silveira

2017-04-01

Full Text Available O objetivo deste estudo consiste em analisar as abordagens de avaliação de ativos intangíveis apresentadas na literatura nacional e internacional. Para tanto, fez-se uso de uma base filosófica construtivista e do Knowledge Development Process - Constructivist (ProKnow-C como instrumento de intervenção para revisão da literatura. No levantamento realizado nas bases: (i EBSCO; (ii ProQuest; (iii Scopus; (iv Science Direct e (v Spell encontrou-se o total de 1.672 artigos utilizando as palavras: Capital Intelectual ou Ativo Intangível e Organização em seu (i título, (ii resumo ou (iii palavras-chave. A partir do aprimoramento da pesquisa com os critérios (i exclusão de artigos repetidos/ redundantes; (ii alinhamento dos artigos ao tema quanto ao título; (iii reconhecimento científico dos artigos; (iv alinhamento dos artigos ao tema quanto aos resumos e (v disponibilidade dos artigos na íntegra, chegou-se a um Portfólio Bibliográfico (PB composto de 28 artigos. Na análise desse PB, identificou-se o total de 41 abordagens de avaliação de ativos intangíveis. Skandia Navigator foi a abordagem mais citada, totalizando 13% das citações. Constatou-se também as categorias e o enquadramento de cada abordagem, identificando-se que existem algumas lacunas de pesquisas envolvendo as abordagens de avaliação. The aim of this study is to analyze the intangible asset evaluation approaches presented in national and international literature. Therefore, there was use of a philosophical basis constructivist and the Knowledge Development Process - Constructivist (ProKnow-C as an intervention tool for literature review. This survey was carried out on the following basis: (i EBSCO; (Ii ProQuest; (Iii Scopus; (Iv Science Direct; and (v Spell, where it was met the total of 1,672 articles using the words: Intellectual Capital or Intangible Assets and Organization in their (i titles, (ii abstracts or (iii keywords. From the research improvement

Accuracy of single progesterone test to predict early pregnancy outcome in women with pain or bleeding: meta-analysis of cohort studies

NARCIS (Netherlands)

Verhaegen, Jorine; Gallos, Ioannis D.; van Mello, Norah M.; Abdel-Aziz, Mohamed; Takwoingi, Yemisi; Harb, Hoda; Deeks, Jonathan J.; Mol, Ben W. J.; Coomarasamy, Arri

2012-01-01

Objective To determine the accuracy with which a single progesterone measurement in early pregnancy discriminates between viable and non-viable pregnancy. Design Systematic review and meta-analysis of diagnostic accuracy studies. Data sources Medline, Embase, CINAHL, Web of Science, ProQuest,

Reproducibility of Automated Voice Range Profiles, a Systematic Literature Review

DEFF Research Database (Denmark)

Printz, Trine; Rosenberg, Tine; Godballe, Christian

2018-01-01

literature on test-retest accuracy of the automated voice range profile assessment. Study design: Systematic review. Data sources: PubMed, Scopus, Cochrane Library, ComDisDome, Embase, and CINAHL (EBSCO). Methods: We conducted a systematic literature search of six databases from 1983 to 2016. The following...

Editorial

Directory of Open Access Journals (Sweden)

Sylvia De Castro Korgi

2018-01-01

Full Text Available Desde el Jardín de Freud is indexed and the following databases and catalogs: Academic Keys - Academic Journals, Academic Search Premier, BIBLAT, CIRC, CLASE, Dialnet, DOAJ, EBSCO Host, EBSCO Discovery Service, Emerging Sources Citation Index, EZB - Elektronische Zeitschriftenbibliothek (Electronic Journals Library, Fuente Académica Plus, Google Scholar, Journal Scholar Metrics - España, Latin America & Iberian Database, LATINDEX (Directorio y Catálogo, LatinREV, MIAR, ProQuest Central, ProQuest Central K-12, REBIUN, REDIB, Research Library, Ulrich's Periodical Directory and Biblioteca virtual Luis Ángel Arango.

Advances in our understanding of immunization and vaccines for patients with systemic lupus erythematosus.

Science.gov (United States)

Bragazzi, Nicola Luigi; Watad, Abdulla; Sharif, Kassem; Adawi, Mohammad; Aljadeff, Gali; Amital, Howard; Shoenfeld, Yehuda

2017-10-01

Systemic lupus erythematosus (SLE) is a chronic systemic autoimmune disease. In SLE, immune system dysfunction is postulated to result by virtue of the disease itself as well as by the impact of treatment modalities employed. A myriad of immune dysregulations occur including complement system dysfunction among others. Infectious agents are known to complicate the disease course in close to 25-45% of SLE patients. Areas covered: In this review a discussion of the immunogenicity and safety of viral and bacterial vaccinations in SLE was performed. The search included ISI Web of Science (WoS), Scopus, MEDLINE/PubMed, Google-Scholar, DOAJ, EbscoHOST, Scirus, Science Direct, Cochrane Library and ProQuest. Proper string made up of a key-words including 'SLE', 'vaccination', 'safety' and 'efficacy' was used. Expert commentary: Vaccination of SLE patients is proven to be immunogenic. Concerns regarding vaccine safety are postulated, yet no direct relationship between vaccination and disease exacerbation were established. While live virus vaccines are generally contraindicated in immunosuppressive states, generally live attenuated vaccinations are recommended in SLE patients on a case-to-case basis. In SLE patients, clinical parameters such as vaccination during disease exacerbations have not been intensively studied and therefore while apparently safe, vaccination is generally recommended while disease is quiescent.

Indoors and health: results of a systematic literature review assessing the potential health effects of living in basements.

Science.gov (United States)

Mezzoiuso, Angelo Giosué; Gola, Marco; Rebecchi, Andrea; Riccò, Matteo; Capolongo, Stefano; Buffoli, Maddalena; Tirani, Marcello; Odone, Anna; Signorelli, Carlo

2017-10-23

A new law approved in March 2017 in the Lombardy Region makes it possible to live in basements. Basements are defined as buildings partly below curb level but with at least one-half of its height above the curb. Basements' features and structural characteristics might pose risks to human health. In this paper we adopt a multidisciplinary approach to assess the potential health effects of living in basements. In particular, we define a conceptual framework to describe basements' structural characteristics which are risk factors, as well as the mechanisms through which they impact on human health. We also conduct a systematic review on the scientific databases PubMed,Embase, DOAJ, Proquest and EBSCO to retrieve, pool and critically analyze all available research that quantified the risk of living in basements for different health outcomes. Available evidence suggests living in basements increases the risk of respiratory diseases (asthma and allergic disorders); more heterogeneous data are available for cancers and cardiovascular diseases. As more quantitative data need to be prospectively retrieved to assess and monitor the risk of living in basements for human health, clear minimum requirements for light, air, sanitation and egress are to be defined by technical experts and enforced by policy makers.

A Systematic Review of Psychosocial Interventions to Cancer Caregivers

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Fang Fu

2017-05-01

Full Text Available Objective: To systematically review the effect of psychosocial interventions on improving QoL, depression and anxiety of cancer caregivers.Methods: We conducted a systematic review of psychosocial interventions among adult cancer caregivers published from 2011 to 2016. PsycINFO, PubMed, Proquest, Cochrane Library, Embase, Applied Social Sciences Index and Abstracts (ASSIA, Cumulative Index to Nursing and Allied Health Literature, Social Sciences Citation Index (SSCI and EBSCO, China National Knowledge Infrastructure (CNKI and WANFANG were searched. Inclusion criteria were: randomized controlled trails (RCTs; psychosocial intervention to cancer caregivers; psychosocial health indicators including quality of life, depression or anxiety.Results: 21 studies out of 4,666 identified abstracts met inclusion criteria, including 19 RCTs. The intervention modes fell into the following nine categories: family connect intervention, self-determination theory-based intervention (SDT, cognitive behavioral therapy (CBT, emotion-focused therapy (EFT, comprehensive health enhancement support system (CHESS, FOCUS programme, existential behavioral therapy (EBT, telephone interpersonal counseling (TIP-C, problem-solving intervention (COPE.Conclusion: paired-intervention targeting self-care and interpersonal connections of caregivers and symptom management of patients is effective in improving quality of life and alleviating depression of cancer caregivers while music therapy is helpful for reducing anxiety of cancer caregivers.

Effect of rhythmic auditory cueing on parkinsonian gait: A systematic review and meta-analysis.

Science.gov (United States)

Ghai, Shashank; Ghai, Ishan; Schmitz, Gerd; Effenberg, Alfred O

2018-01-11

The use of rhythmic auditory cueing to enhance gait performance in parkinsonian patients' is an emerging area of interest. Different theories and underlying neurophysiological mechanisms have been suggested for ascertaining the enhancement in motor performance. However, a consensus as to its effects based on characteristics of effective stimuli, and training dosage is still not reached. A systematic review and meta-analysis was carried out to analyze the effects of different auditory feedbacks on gait and postural performance in patients affected by Parkinson's disease. Systematic identification of published literature was performed adhering to PRISMA guidelines, from inception until May 2017, on online databases; Web of science, PEDro, EBSCO, MEDLINE, Cochrane, EMBASE and PROQUEST. Of 4204 records, 50 studies, involving 1892 participants met our inclusion criteria. The analysis revealed an overall positive effect on gait velocity, stride length, and a negative effect on cadence with application of auditory cueing. Neurophysiological mechanisms, training dosage, effects of higher information processing constraints, and use of cueing as an adjunct with medications are thoroughly discussed. This present review bridges the gaps in literature by suggesting application of rhythmic auditory cueing in conventional rehabilitation approaches to enhance motor performance and quality of life in the parkinsonian community.

Eating disorders among fashion models: a systematic review of the literature.

Science.gov (United States)

Zancu, Simona Alexandra; Enea, Violeta

2017-09-01

In the light of recent concerns regarding the eating disorders among fashion models and professional regulations of fashion model occupation, an examination of the scientific evidence on this issue is necessary. The article reviews findings on the prevalence of eating disorders and body image concerns among professional fashion models. A systematic literature search was conducted using ProQUEST, EBSCO, PsycINFO, SCOPUS, and Gale Canage electronic databases. A very low number of studies conducted on fashion models and eating disorders resulted between 1980 and 2015, with seven articles included in this review. Overall, results of these studies do not indicate a higher prevalence of eating disorders among fashion models compared to non-models. Fashion models have a positive body image and generally do not report more dysfunctional eating behaviors than controls. However, fashion models are on average slightly underweight with significantly lower BMI than controls, and give higher importance to appearance and thin body shape, and thus have a higher prevalence of partial-syndrome eating disorders than controls. Despite public concerns, research on eating disorders among professional fashion models is extremely scarce and results cannot be generalized to all models. The existing research fails to clarify the matter of eating disorders among fashion models and given the small number of studies, further research is needed.

Processing emotional body expressions: state-of-the-art.

Science.gov (United States)

Enea, Violeta; Iancu, Sorina

2016-10-01

Processing emotional body expressions has become recently an important topic in affective and social neuroscience along with the investigation of facial expressions. The objective of the study is to review the literature on emotional body expressions in order to discuss the current state of knowledge on this topic and identify directions for future research. The following electronic databases were searched: PsychINFO, Ebsco, ERIC, ProQuest, Sagepub, and SCOPUS using terms such as "body," "bodily expression," "body perception," "emotions," "posture," "body recognition" and combinations of them. The synthesis revealed several research questions that were addressed in neuroimaging, electrophysiological and behavioral studies. Among them, one important question targeted the neural mechanisms of emotional processing of body expressions to specific subsections regarding the time course for the integration of emotional signals from face and body, as well as the role of context in the perception of emotional signals. Processing bodily expression of emotion is similar to processing facial expressions, and the holistic processing is extended to the whole person. The current state-of-the-art in processing emotional body expressions may lead to a better understanding of the underlying neural mechanisms of social behavior. At the end of the review, suggestions for future research directions are presented.

Inter-Professional Team Objective Structured Clinical Examination (ITOSCE: Teaching and Assessment Strategies of the Inter Professional Approach

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Fatemeh Keshmiri

2016-10-01

Full Text Available Background: In the recent decades, Inter-Professional Team Objective Structured Clinical Examination (ITOSCE has been considered as an efficient tool in evaluating the teamwork and the Inter-professional competences. The aim of this study was to review the literature related ITOSCE as educational tool. Method: This narrative review study was conducted in 2015. Relevant literature was found by searching the databases such as: PubMed, Medline, CINAHL, Google Scholar, Science Direct, EBSCO, ProQuest. Title searching was performed in full English texts without time limitation using keywords including; Team, Inter professional Team, Group, Inter-disciplinary, Objective Structured Clinical Examination (TOSCE, ITOSCE, GOSCE. Results: 19 studies met the inclusion criteria and were included in the analyses. In 13 studies, ITOSCE was used as an assessment tool, and in 6 studies as a learning tool. ITOSCE had been used in several fields such as: obstetrics, gynecology, emergency, palliative care with participating of a variety of disciplines, including: medicine, pharmacy, several trends of nursing, physiotherapy, occupational therapy and Social working. Conclusion: Eventually, it can be noted that ITOSCE plays significant role as an educational and evaluation tool to improve inter-professional teamwork competences among the students. Further studies are needed to develop to examine the psychometric criteria of ITOSCE.

How do users of different academic areas perceive user friendliness of IR

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Polona Vilar

2008-01-01

Full Text Available The paper presents one part of a wider study,performed at the Department of LIS&BS at the Faculty of Arts in Ljubljana. The study investigated the perceptions of user friendliness of information retrieval systems’ (IRSinterfaces and the role of individual characteristics of users in these perceptions. A user study with 61 postgraduate students of the University of Ljubljana was performed.Three interfaces were studied: Science Direct,Proquest Direct and Ebsco Host.Questionnaires and observation were used for data collection. The users’ perceptions of importance of auxiliary functions, interface preference and perceptions of user friendliness of certain interface elements were investigated.Also,the connections between these perceptions and the users’individual characteristics were identified. Three sets of individual characteristics were included:approaches to studying,thinking styles and hemisphere leanings. In connection with the dimensions of individual characteristics very different user perceptions were expressed. Some dimensions of individual characteristics were also found to be connected to the users’academic areas. It is shown that the participants from different academic areas have different requirements and perceptions of user friendliness. The results of the study are relevant for the design of the user interfaces of disciplinary IRS.They also have implications for other areas,e.g.user education and training,acquisition and marketing.

Following celebrities’ medical advice: meta-narrative analysis

OpenAIRE

Hoffman, Steven J; Tan, Charlie

2013-01-01

Objective: To synthesise what is known about how celebrities influence people’s decisions on health. Design: Meta-narrative analysis of economics, marketing, psychology, and sociology literatures. Data sources Systematic searches of electronic databases: BusinessSource Complete (1886-), Communication & Mass Media Complete (1915-), Humanities Abstracts (1984-), ProQuest Political Science (1985-), PsycINFO (1806-), PubMed (1966-), and Sociology Abstracts (1952-). Inclusion criteria Studies disc...

Review of parental activation interventions for parents of children with special health care needs.

Science.gov (United States)

Mirza, M; Krischer, A; Stolley, M; Magaña, S; Martin, M

2018-05-01

A large number of U.S. children are identified as having special health care needs (CSHCN). Despite parents' central role in managing their child's needs, many parents report difficulties in navigating service systems, finding information about their child's condition, and accessing health care and community resources. Therefore, there is a need for interventions that "activate" parents of children with special health care needs to increase their knowledge, skills, and confidence in managing, coordinating, and advocating for their child's needs. This study sought to review the existing literature and examine the effects of parent support interventions that focus on parental activation either in part or whole, on child, parent, or family outcomes. Specific aims included (a) summarizing the nature and content of interventions; (b) describing changes in relevant outcomes; (c) identifying limitations and making recommendations for future research. Following electronic databases were searched: MEDLINE, EMBASE, PsycINFO via ProQuest, PubMed, Cumulative Index to Nursing and Allied Health via EBSCO, Education Resources Information Center (ERIC) via ProQuest, The Cochrane Library (Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, Cochrane Methodology Register), and Google Scholar. Twenty-two studies were selected, data were extracted, and quality was assessed using standardized procedures. Five intervention categories were identified: parent-to-parent supports, psycho-educational groups, content-specific groups, community health worker model, and self-management-based interventions. Although most studies showed positive effects of the intervention, evidence was inconsistent for parental outcomes such as self-efficacy, confidence, strain, depression, and perceived social support. Evidence was more consistent in showing improvement in parent coping and in use of community-based services and resources. There is a need to boost active

Use and Cost of Electronic Resources in Central Library of Ferdowsi University Based on E-metrics

Directory of Open Access Journals (Sweden)

Mohammad Reza Davarpanah

2012-07-01

Full Text Available The purpose of this study was to investigate the usage of electronic journals in Ferdowsi University, Iran based on e-metrics. The paper also aimed to emphasize the analysis of cost-benefit and the correlation between the journal impact factors and the usage data. In this study experiences of Ferdowsi University library on licensing and usage of electronic resources was evaluated by providing a cost-benefit analysis based on the cost and usage statistics of electronic resources. Vendor-provided data were also compared with local usage data. The usage data were collected by tracking web-based access locally, and by collecting vender-provided usage data. The data sources were one-year of vendor-supplied e-resource usage data such as Ebsco, Elsevier, Proquest, Emerald, Oxford and Springer and local usage data collected from the Ferdowsi university web server. The study found that actual usage values differ for vendor-provided data and local usage data. Elsevier has got the highest usage degree in searches, sessions and downloads. Statistics also showed that a small number of journals satisfy significant amount of use while the majority of journals were used less frequent and some were never used at all. The users preferred the PDF rather than HTML format. The data in subject profile suggested that the provided e-resources were best suited to certain subjects. There was no correlation between IF and electronic journal use. Monitoring the usage of e-resources gained increasing importance for acquisition policy and budget decisions. The article provided information about local metrics for the six surveyed vendors/publishers, e.g. usage trends, requests per package, cost per use as related to the scientific specialty of the university.

Construcción del concepto de salud mental positiva: revisión sistemática

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Cristóbal Ovidio Muñoz

Full Text Available RESUMEN Objetivo Caracterizar los modelos teóricos que han fundamentado las investigaciones empíricas sobre salud mental positiva desde el momento en que aparece el concepto en el campo de la salud hasta la actualidad. Métodos Se realizó un proceso sistemático de búsqueda de literatura, publicada en las bases de datos PubMed, Ebsco (Academic Search Complete, ERIC, Fuente Académica, MasterFILE premier, MedicLatina, Medline y Psychology and Behavioral Sciences Collection, Science Direct, Psicodoc, Springer Link, Taylor and Francys, Wiley Online Library, DOAJ (Directory of Open Access Journals, Redalyc, Scielo, Ovid, Embase y Proquest (Psychology Journals, Nursing and Allied Health Source, Health and Medical Complete y Social Science Journals. Se utilizó como criterio de búsqueda el descriptor “salud mental positiva”. Resultados De los 51 estudios consultados, 84% presentan un enfoque cuantitativo y también 84% están publicados en inglés y fueron realizados entre los años 2000 y 2014. Se identificaron cinco categorías en la utilización del concepto salud mental positiva: la ausencia de enfermedad como indicador de salud mental positiva, el modelo de Jahoda, el desarrollo de la escala de Lluch, la utilización del concepto de bienestar como sinónimo de salud mental positiva y un reciente interés por diseñar escalas de medición. Conclusiones La salud mental positiva no debe ser entendida como la antinomia del trastorno mental, la ausencia de enfermedad o la simple suma de atributos personales. Es importante avanzar en el desarrollo de modelos conceptuales que servirán como fundamento para el abordaje de la salud mental desde un enfoque centrado en la promoción de la salud.

Physical Activity of Youth with Intellectual Disability: Review and Research Agenda

Science.gov (United States)

Frey, Georgia C.; Stanish, Heidi I.; Temple, Viviene A.

2008-01-01

This review characterizes physical activity behavior in youth with intellectual disability (ID) and identifies limitations in the published research. Keyword searches were used to identify articles from MEDLINE, EBSCOhost Research Databases, Psych Articles, Health Source, and SPORT Discus, and ProQuest Dissertations and Theses up to June 2007.…

(Self-) Discovery Service: Helping Students Help Themselves

Science.gov (United States)

Debonis, Rocco; O'Donnell, Edward; Thomes, Cynthia

2012-01-01

EBSCO Discovery Service (EDS) has been heavily used by UMUC students since its implementation in fall 2011, but experience has shown that it is not always the most appropriate source for satisfying students' information needs and that they often need assistance in understanding how the tool works and how to use it effectively. UMUC librarians have…

Social cognitive theories used to explain physical activity behavior in adolescents: a systematic review and meta-analysis.

Science.gov (United States)

Plotnikoff, Ronald C; Costigan, Sarah A; Karunamuni, Nandini; Lubans, David R

2013-05-01

To systematically review and examine the explanatory power of key social-cognitive theories used to explain physical activity (PA) intention and behavior, among adolescents. A systematic review and meta-analysis of the literature was performed using the electronic databases Medline, Cumulative Index to Nursing and Allied Health Literature, SPORTdiscus, EBSCO and Education Resources Information Center, Proquest Education Journals Collection, Science Direct, Web of Science and Scopus for social-cognitive theories (i.e., Health Promotion Model, Theory of Planned Behavior, Theory of Reasoned Action, Protection Motivation Theory, Social Cognitive Theory/Self-Efficacy Theory, Health Belief Model, Self-Determination Theory, Transtheoretical Model) used to explain PA intention and behavior. Related keywords in titles, abstracts, or indexing fields were searched. Twenty-three studies satisfied the inclusion criteria and were retained for data extraction and analysis; 16 were cross-sectional studies and seven were longitudinal studies. Most studies employed self-report measures. In general, the models explained greater proportions of variance for intention compared to behavior. The meta-analyses revealed 33% and 48% of the variance respectively for PA and intention were explained by social cognitive models. Few studies have tested the predictive capacity of social cognitive theories to explain objectively measured PA. The majority of PA variance remains unexplained and more theoretical research is needed. Copyright © 2013 Elsevier Inc. All rights reserved.

A systematic review of the effectiveness of smartphone applications that encourage dietary self-regulatory strategies for weight loss in overweight and obese adults.

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Semper, H M; Povey, R; Clark-Carter, D

2016-09-01

The aim of this paper is to systematically review the evidence to explore whether smartphone applications that use self-regulatory strategies are beneficial for weight loss in overweight and obese adults over the age of 18 years. Sixteen electronic databases were searched for articles published up to April 2015 including MEDLINE, OVID, Ingenta, PSYCARTICLES and PSYCINFO, CINAHL, Sportdiscus, Science Direct, Web of Knowledge, Cochrane Library, JSTOR, EBSCO, Proquest, Wiley and Google Scholar. Twenty nine eligible studies were retrieved of which six studies met the inclusion criteria. Studies that recruited participants under the age of 18 years, adults with a chronic condition or did not report weight loss outcomes were excluded. Study findings were combined using a narrative synthesis. Overall, evidence suggests that smartphone applications may be a useful tool for self-regulating diet for weight loss as participants in the smartphone application group in all studies lost at least some bodyweight. However, when compared to other self-monitoring methods, there was no significant difference in the amount of weight lost. Findings should be interpreted with caution based on the design of the studies and the comparator groups used. Future research needs to be more methodologically rigorous and incorporate measures of whether eating habits become healthier in addition to measuring weight and BMI. © 2016 World Obesity.

Diabetic patients: Psychological aspects.

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Adili, Fatemeh; Larijani, Bagher; Haghighatpanah, Mohammadreza

2006-11-01

This study was undertaken to consider the psychological aspect of diabetes with regard to improving clinical outcomes. The review was limited to literature reports on the causes, solutions, and treatments of some common psychological problems known to complicate diabetes management. A literature search was undertaken using Pub-Med, CINAHL, Proquest, Elsevier, Blackwell Synergy, Ovid, Ebsco, Rose net, and Google websites, including studies published in English journals between 1995 and 2006. Therefore about 88 articles were selected based on the inclusion criteria. In earlier studies, relatively little empirical research was found to substantiate the effect of psychological counseling in complicated diabetes. The greatest deficits were seen in areas of mental health, self-esteem parent impact, and family cohesion. There were some different factors, which influence the psychological aspect of diabetic patients, such as age, gender, place of living, familial and social support, motivation, energy, life satisfaction, and lifestyle. There are various types of solutions for coping with the psychological problems in diabetic clients. The most essential solution lies in educating the patients and healthcare providers on the subject. Before initiating each educational intervention, a thorough assessment would be crucial. Treatment plans may benefit from cognitive behavior therapy (CBT), behavior family therapy, improving family communication, problem-solving skills, and providing motivation for diabetic patients. Moreover, it seems that the close collaboration between diabetologists and psychologists would be fruitful.

The Role of the Department of Defense (DoD) in Solar Energy Research, Development and Diffusion

Science.gov (United States)

2008-06-01

cluster building process. Economic Development Journal, 6(4). Retrieved April 30, 2008, from EBSCO database. Congressional Research Service . (2008...information, including suggestions for reducing this burden, to Washington headquarters Services , Directorate for Information Operations and Reports...peaking of oil production or has already surpassed it, depending on the source. Global reserves fluctuate with the discovery of new oil fields and

Vietnam Land Policy - Adjusting to Globalization

Science.gov (United States)

2013-11-01

the Late- Socialist Period," Pacific Affairs: vol 84, no. 3, (2011): 439-440, accessed 30 September 2013, EBSCO Discovery Service . 37 U.S...Society,” Contemporary Southeast Asia vol 31, no. 1 (2009): 21, accessed 15 October 2013, EBSCO Discovery Service . 81 Legal Information... EBSCO Discovery Service . Fforde, Adam. "Vietnam in 2012: The End of the Party." Asian Survey 53, no. 1 (2013): 101-108. Accessed 30

Conocimientos y creencias de las enfermeras sobre el cuidado de las úlceras por presión: revision sistemática de la literatura Nurses´knowledge and beliefs about pressure ulcers care: a systematic review of literature

Directory of Open Access Journals (Sweden)

Pedro L. Pancorbo Hidalgo

2007-12-01

ón y cuidados de las upp, siendo superior el índice de conocimientos de factores de riesgo y prevención al de tratamiento. La formación específica sobre upp mejora este índice de conocimientos.Aim: To determine the current knowledge about prevention and treatment of pressure ulcers (PU in nurses. Design: Systematic review. Data source: Fourteen bibliographic databases: Database of Abstracts of Reviews of Effectiveness (DARE; Cinahl; Medline; Currents Contents: Clinical Medicine, Social and Behavioral Sciences, Life Sciences; Índice médico español (IME; Cuiden; Centro Latinoamericano y del Caribe de Información en Ciencias de la Salud (LILACS; Cochrane Library; EBSCO; ScienceDirect; Springer; InterSciencia; ProQuest y Pascal. Methods: Papers about surveys of knowledge on PU published in Spanish, English, French and Portuguese were included. Also a quasi-experimental study about the effect of a formation session on PU knowledge was included. Studies about knowledge using non comparable methodology were excluded. Results: Eighteen papers were included in the review. Most of them have used a convenience sample. Participants were registered nurses, licensed nurses and nurse students. As average, the overall index of knowledge was 70%; with a range between 73 and 85% for prevention, and between 56 and 78% for treatment. Risk factors best known were: incontinence, immobility, pressure or malnutrition. The nursing interventions best known were: skin care, maintain clean the bed and repositioning. On contrary, the use of pressure-relief surfaces, patient education and PU classification were the nursing interventions kwon by a fewer number of nurses. Conclusions: Overall the level of knowledge about PU care is acceptable. The knowledge about risk factors and prevention measures is better than that one about treatment. Education and specific training about PU improve the knowledge index

Investigating source processes of isotropic events

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Chiang, Andrea

This dissertation demonstrates the utility of the complete waveform regional moment tensor inversion for nuclear event discrimination. I explore the source processes and associated uncertainties for explosions and earthquakes under the effects of limited station coverage, compound seismic sources, assumptions in velocity models and the corresponding Green's functions, and the effects of shallow source depth and free-surface conditions. The motivation to develop better techniques to obtain reliable source mechanism and assess uncertainties is not limited to nuclear monitoring, but they also provide quantitative information about the characteristics of seismic hazards, local and regional tectonics and in-situ stress fields of the region . This dissertation begins with the analysis of three sparsely recorded events: the 14 September 1988 US-Soviet Joint Verification Experiment (JVE) nuclear test at the Semipalatinsk test site in Eastern Kazakhstan, and two nuclear explosions at the Chinese Lop Nor test site. We utilize a regional distance seismic waveform method fitting long-period, complete, three-component waveforms jointly with first-motion observations from regional stations and teleseismic arrays. The combination of long period waveforms and first motion observations provides unique discrimination of these sparsely recorded events in the context of the Hudson et al. (1989) source-type diagram. We examine the effects of the free surface on the moment tensor via synthetic testing, and apply the moment tensor based discrimination method to well-recorded chemical explosions. These shallow chemical explosions represent rather severe source-station geometry in terms of the vanishing traction issues. We show that the combined waveform and first motion method enables the unique discrimination of these events, even though the data include unmodeled single force components resulting from the collapse and blowout of the quarry face immediately following the initial

[ENTERAL NUTRITION ON THE NUTRITIONAL STATUS OF CANCER].

Science.gov (United States)

Escortell Sánchez, Raquel; Reig García-Galbis, Manuel

2015-10-01

to identify what effect causes enteral nutrition on nutritional status of cancer. a search was performed using the keywords "Cancer" AND "Enteral Nutrition" AND "Supplementation" in four document databases: Pubmed, EBSCO, ProQuest, and Web of Science. age of the sample, major than 18 years; submitted to surgery for cancer; that the intervention program was including diet and employment or not of nutritional Supplementation; clinical trials published between January 2004 and December 2014, in scientific journals indexed. we analyzed 660 articles, of which only 2% has been included. 58% of intervention programs are applied outside Spain; 84% of the interventions was carried out in a hospitable ambient; 58% of the sample is formed by adults older than 54 years; 33% of the interventions were multidisciplinary and its duration ranges between 1 and 4 years. we found just a few national interventions in cancer participants and there two types of interventions: by exclusive polymeric enteral formula or mixed with immunonutrition. enteral nutrition shows against the parenteral and its introduction at an early stage, it helps to improve nutritional status of the patient; polymeric formulas next immunonutrition, it helps to reduce the time of hospitalization; the analytical parameters are shown as a measurement pattern when assessing the improvement in nutritional status in cancer. It is recommended to increase the research in this field, especially in children. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

A Structured Review of Generic and Specific Instruments for Measuring the Subjectively Assessed Quality of Life of Seniors

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Monika Kacmarova

2015-12-01

Full Text Available The objective of the study is to offer a review of the instruments designed for measuring the subjectively assessed quality of life of seniors. At present it is possible to notice an increase of interest in the issue of the quality of life of specific groups of population; in addition, there is a large number of tools for its measuring. The aim of the present study is to provide a systematic review of generic and specific instruments for measuring quality of life of seniors which have been published in peer-reviewed journals and whose psychometric parameters have been verified. The search procedure formed a part of a larger retrieval search in which we analyzed 4829 abstracts in EBSCO and ProQuest Central full-text databases. We found 831 instruments which claimed to be measuring quality of life and were verified their reliability or validity. We identified 3 groups of instruments suitable for use in the senior age-group: generic methodologies applicable to adults in general, 7 generic tools and 9 specific tools designed exclusively for the senior age. The paper presents the measures designed for seniors who were analyzed and compared with regard to their psychometric parameters, purpose and theoretical framework utilized for their construction. In conclusion the authors of the study provide recommendations for the use of the selected methodologies for measuring the subjectively assessed quality of life of seniors.

[Lessons learned in the implementation of interoperable National Health Information Systems: a systematic review].

Science.gov (United States)

Ovies-Bernal, Diana Paola; Agudelo-Londoño, Sandra M

2014-01-01

Identify shared criteria used throughout the world in the implementation of interoperable National Health Information Systems (NHIS) and provide validated scientific information on the dimensions affecting interoperability. This systematic review sought to identify primary articles on the implementation of interoperable NHIS published in scientific journals in English, Portuguese, or Spanish between 1990 and 2011 through a search of eight databases of electronic journals in the health sciences and informatics: MEDLINE (PubMed), Proquest, Ovid, EBSCO, MD Consult, Virtual Health Library, Metapress, and SciELO. The full texts of the articles were reviewed, and those that focused on technical computer aspects or on normative issues were excluded, as well as those that did not meet the quality criteria for systematic reviews of interventions. Of 291 studies found and reviewed, only five met the inclusion criteria. These articles reported on the process of implementing an interoperable NHIS in Brazil, China, the United States, Turkey, and the Semiautonomous Region of Zanzíbar, respectively. Five common basic criteria affecting implementation of the NHIS were identified: standards in place to govern the process, availability of trained human talent, financial and structural constraints, definition of standards, and assurance that the information is secure. Four dimensions affecting interoperability were defined: technical, semantic, legal, and organizational. The criteria identified have to be adapted to the actual situation in each country and a proactive approach should be used to ensure that implementation of the interoperable NHIS is strategic, simple, and reliable.

The etiology of occupational pulmonary aluminosis--the past and the present.

Science.gov (United States)

Smolkova, Petra; Nakladalova, Marie

2014-12-01

The authors review pulmonary aluminosis caused by exposure to dust containing aluminium and its compounds, mainly oxides. Special attention is paid to various factors of occupational exposure as to an important etiologic issue. The condition has a rich and interesting history dating back to the 1930s. The most significant occupational exposures are associated with processes in bauxite smelting, the use of fine aluminium powder, exposure to aluminium welding fumes, grinding and polishing of aluminium materials. A literature search for relevant scientific studies in English was performed using the following internet databases: relevant sections of The Cochrane Library, EBSCO Discovery Service, Ovid, ProQuest Science Journals, PubMed, ScienceDirect, Scopus and Web of Knowledge. The initial clinical manifestations of pulmonary aluminosis are exertional dyspnea with dry, non-productive cough. Depending on the type and length of the occupational exposure, ventilatory defects may vary considerably from restrictive to obstructive pattern. Radiographic findings commonly showing nodular or slightly irregular opacities are predominantly located in the upper, less frequently in the lower lung fields, or can have a diffuse pattern. In advanced stages, severe pulmonary fibrosis with honeycombing occured. Although pulmonary aluminosis is a very rare disease, it still occurs. Since the industrial importance and use of aluminium continue to rise, lung damage from exposure to respirable aluminium particles should not be overlooked but monitored and prevented. Even today, the pathophysiology of pulmonary aluminosis has not been explained as yet.

Importancia de aprender a ser ciudadano: un reto para la formación de la educación superior en Colombia

Directory of Open Access Journals (Sweden)

Sandra Milena Rojas Padilla

2015-10-01

Full Text Available El objetivo de este artículo pretende evidenciar la importancia de la enseñanza de competencias ciudadanas en la educación superior, que está tomada de manera tangencial tanto por el Estado Colombiano como por las Instituciones de Educación Superior (IES aunque existe un mandato constitucional y legal que lo dispone. Partiendo del hecho de que no hay estándares básicos de competencias ciudadanas para la Educación Superior pero a pesar de ello éstas serán evaluadas por el ICFES en las pruebas Saber Profesional (Saber Pro. Una democracia se hace con ciudadanos, y para formar ciudadanos, es una responsabilidad de la familia, la sociedad y el Estado, para que pueda conocer tanto sus derechos como sus deberes, al formar parte de un Estado social de derecho con democracia participativa, resolver los conflictos de manera pacífica y tomar decisiones conscientes y responsables en el ejercicio y fortalecimiento de la democracia participativa; y es por ello, que las IES se convierten en eje fundamental para el cambio cultural. Para este propósito se realizó una revisión de lo que se ha escrito sobre competencias ciudadanas para la educación superior, en libros y en especial en bases de datos tales como ProQuest, EBSCO Academic Search Complete y Dialnet Plus, entre otras.

Consumers' views on generic medicines: a review of the literature.

Science.gov (United States)

Hassali, Mohamed A A; Shafie, Asrul A; Jamshed, Shazia; Ibrahim, Mohamed I M; Awaisu, Ahmed

2009-04-01

To review the literature on consumers' knowledge, attitudes and opinions of the use of generic medicines. A narrative review of studies conducted from 1970 to 2008 on consumers perceptions and views towards generic medicines was performed. An extensive literature search was undertaken using indexing services available at the authors' institution library. The following keywords were used for the search: brand, generic, multisource, medications, medicines, drugs, pharmaceuticals and consumers, customers, and patients. Electronic databases searched were Medline, Inside Web, ISI Web of Knowledge, Science Direct, Springer Link, JSTOR, Proquest, Ebsco Host and Google Scholar. These electronic databases were searched for full text papers published in English from 1970 to October 2008. Twenty studies were identified. Eleven were from the USA, four were from Europe, two were from Canada and one each was from Australia, Brazil and Malaysia. In general, consumers showed mixed reactions towards the use of generic medicines. This was evident from the divergence of views observed by country development level, consumers' socioeconomic characteristics, drug product characteristics, pharmaceutical reimbursement system, policy environment, contact with health care professionals, past experience with medications, and knowledge of the seriousness of a medical condition. Patient confidence and knowledge pertaining to generic medicines use have increased over the past four decades, especially in developed countries. Mass educational efforts, financial incentives, and greater communication among patients and health care professionals were seen as major drivers to the uptake of generic medicines among consumers.

Hospitales reformando al mundo verde

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Sandra Milene Rojas-Criollo

2016-12-01

Full Text Available Introducción: factores ambientales como el cambio climático, el calentamiento global, el mal uso del suelo y del agua, la mala administración de los recursos naturales, la contaminación del aire en espacios abiertos y cerrados, el crecimiento urbano y la industrialización han ocasionado cambios en los procesos naturales del planeta; para la Organización Mundial de la Salud constituyen una barrera significativa que impide alcanzar los objetivos del milenio y del desarrollo sostenible, haciendo cada vez más grave su aplicación y generando un ambiente hostil para la vida de las personas. Metodología: investigación documental, descriptiva, con enfoque cualitativo. Se realizó búsqueda en las bases de datos Ebsco, Proquest, Scielo, Elsevier, etc., con descriptores en inglés y español. Se clasificó los artículos por similitudes, autores y definiciones; se agruparon 60 artículos en una matriz y, posteriormente, se analizaron y se integraron los conceptos para luego categorizarlos. Conclusiones: es de gran relevancia el conocimiento sobre hospitales verdes, ya que son empresas que promueven la salud pública y la reducción del impacto ambiental, además de la disminución de los índices de morbilidad y mortalidad. El personal de salud tiene un papel importante para desarrollar e implementar estas actividades en beneficio del ambiente y las personas

Educational intervention on physical restraint use in long-term care facilities - Systematic review and meta-analysis.

Science.gov (United States)

Lan, Shao-Huan; Lu, Li-Chin; Lan, Shou-Jen; Chen, Jong-Chen; Wu, Wen-Jun; Chang, Shen-Peng; Lin, Long-Yau

2017-08-01

"Physical restraint" formerly used as a measure of protection for psychiatric patients is now widely used. However, existing studies showed that physical restraint not only has inadequate effect of protection but also has negative effects on residents. To analyzes the impact of educational program on the physical restraint use in long-term care facilities. A systematic review with meta-analysis and meta-regression. Eight databases, including Cochrane Library, ProQuest, PubMed, EMBASE, EBSCO, Web of Science, Ovid Medline and Physiotherapy Evidence Database (PEDro), were searched up to January 2017. Eligible studies were classified by intervention and accessed for quality using the Quality Assessment Tool for quantitative studies. Sixteen research articles were eligible in the final review; 10 randomize control trail studies were included in the analysis. The meta-analysis revealed that the use of physical restraint was significantly less often in the experimental (education) group (OR = 0.55, 95% CI: 0.39 to 0.78, p education would have decreased the effect of the restraint educational program (β: 0.08, p = 0.002); instead, the longer education period and more times of education would have a stronger effect of reducing the use of physical restraint (β: -0.07, p educational program had an effect on the reduced use of physical restraint. The results of meta-regression suggest that long-term care facilities should provide a continuous education program of physical restraint for caregivers. Copyright © 2017. Published by Elsevier Taiwan.

The Impact of Organisational Learning on Organisational Performance

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Anna Zgrzywa-Ziemak

2015-12-01

Full Text Available Purpose: The aim of this article is to analyse the theoretical views and results of empirical research concerning the relation between organisational learning (OL and organisational performance (OP. Methodology: The study was carried out through extensive literature research, including relevant literature review from databases such as ProQuest, Elsevier, Emerald and EBSCO (the phrases: “organisational learning”, “learning organisation” and “organisational performance” were searched in the keywords, titles or abstracts. Findings: From a theoretical point of view, the relation between OL and OP is neither obvious nor clear, but the analysis of the empirical studies allows one to assume that OL has an essential impact on OP. However, differences in the strength of the relation were shown and some contradictions related to the presence of the relation between OL and selected (mostly financial performance aspects identified. Furthermore, the article discusses the significant differences and inconsistencies in the methods of measuring OL, measuring OP, selecting contextual factors and adopted methods of data analysis. Implications: Inconsistencies and gaps found in the studies of the relationship between OL and OP made it possible to designate the direction for promising further research. Value: The article presents valuable insight through its in-depth, critical analysis of the organisational learning and organisational outcomes. First and foremost, this indicates that the formula of the previous empirical studies does not allow for the development of precise solutions pertaining to organisational learning management for the benefit of OP improvement.

Is eccentric exercise an effective treatment for lateral epicondylitis? A systematic review.

Science.gov (United States)

Cullinane, Frances L; Boocock, Mark G; Trevelyan, Fiona C

2014-01-01

To establish the effectiveness of eccentric exercise as a treatment intervention for lateral epicondylitis. ProQuest, Medline via EBSCO, AMED, Scopus, Web of Science, CINAHL. A systematic review was undertaken to identify randomized and controlled clinical trials incorporating eccentric exercise as a treatment for patients diagnosed with lateral epicondylitis. Studies were included if: they incorporated eccentric exercise, either in isolation or as part of a multimodal treatment protocol; they assessed at least one functional or disability outcome measure; and the patients had undergone diagnostic testing. The methodological quality of each study was assessed using the Modified Cochrane Musculoskeletal Injuries Group score sheet. Twelve studies met the inclusion criteria. Three were deemed 'high' quality, seven were 'medium' quality, and two were 'low' quality. Eight of the studies were randomized trials investigating a total of 334 subjects. Following treatment, all groups inclusive of eccentric exercise reported decreased pain and improved function and grip strength from baseline. Seven studies reported improvements in pain, function, and/or grip strength for therapy treatments inclusive of eccentric exercise when compared with those excluding eccentric exercise. Only one low-quality study investigated the isolated effects of eccentric exercise for treating lateral epicondylitis and found no significant improvements in pain when compared with other treatments. The majority of consistent findings support the inclusion of eccentric exercise as part of a multimodal therapy programme for improved outcomes in patients with lateral epicondylitis.

Musicians have better memory than nonmusicians: A meta-analysis

OpenAIRE

Talamini, Francesca; Altoè, Gianmarco; Carretti, Barbara; Grassi, Massimo

2017-01-01

Background Several studies have found that musicians perform better than nonmusicians in memory tasks, but this is not always the case, and the strength of this apparent advantage is unknown. Here, we conducted a meta-analysis with the aim of clarifying whether musicians perform better than nonmusicians in memory tasks. Methods Education Source; PEP (WEB)—Psychoanalytic Electronic Publishing; Psychology and Behavioral Science (EBSCO); PsycINFO (Ovid); PubMed; ScienceDirect—AllBooks Content (E...

Corporate profile, performance and green supply chain management: a research agenda / Perfil corporativo, desempenho e green supply chain management: uma agenda de pesquisa

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Fábio Ytoshi Shibao

2017-06-01

Full Text Available Purpose: To evaluate the universe of published articles that propose frameworks about the relationship between green supply chain management (GSCM and performance in the period from 1995 to 2014, in order to propose a conceptual model that can be applied to future studies, considering the green profile besides the practices of GSCM and performance. Originality/gap/relevance/implications: The investigation revealed a lack of relationship among the organizations' profile, its environmental, economic and operational performance and GSCM practices. Key methodological aspects: The relationship among constructs was established through bibliometric analysis obtained in the models/frameworks of GSCM practices and performance extracted from the databases "ProQuest", "EBSCO", "JSTOR", "Web of Science" and "Scopus". Further, the content analysis and network analysis were then performed. Summary of key results: GSCM internal and external practices, environmental performance, economic performance and operational performance were revealed as main topics addressed in GSCM. Moreover, it was noted that studies on internal practices prevailed over those addressed to other practices. Key considerations/conclusions: The models studied did not consider whether the corporate green profile could improve the performance of the organization. Therefore, they did not simultaneously measure environmental, economic and operational performance. It was concluded that the addition of the green profile in conjunction with GSCM practices and performance allows for a more in-depth analysis of the degree of a company's involvement with GSCM, as well as its intended objectives and results achieved in the future. Objetivo: Avaliar o universo de artigos publicados que propuseram frameworks da relação entre green supply chain management (GSCM e desempenho no período de 1995 à 2014, de modo a propor um modelo conceitual que possa ser aplicado para futuros estudos, considerando o

Otizm Spektrum Bozukluğu (OSB Olan Bireylerin Fiziksel Aktivitelerine İlişkin Yapılan Çalışmaların Gözden Geçirilmesi

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Bora Görgün

2016-12-01

Full Text Available Bu araştırmada, Türkiye’de ve dünyada otizm spektrum bozukluğu (OSB olan bireylerin fiziksel aktivitelerine ilişkin 2004-2014 yılları arasında yapılan tez ve makale çalışmalarının gözden geçirilmesi amaçlanmıştır. Bu araştırma için Yükseköğretim Kurulu (YÖK Ulusal Tez Merkezi, Türkiye Bilimsel ve Teknolojik Araştırma Kurumu Ulusal Akademik Ağ ve Bilgi Merkezi (TÜBİTAK ULAKBİM, EbscoHost, Proquest Dissertations and Theses Global, SAGE ve SpringerLink veritabanları taranmış ve konuyla ilgili 16 tez çalışmasına ve hakemli dergilerde yayınlanmış 33 makaleye ulaşılmıştır. Elde edilen çalışmalar dört kategoride incelenmiştir. “OSB olan bireylerin fiziksel aktivitelerini karşılaştırma” kategorisinde altı, “fiziksel aktivite programının OSB olan bireyler üzerine etkisi” kategorisinde 26, “fiziksel aktiviteye yönelik ailelerin ve öğretmenlerin görüşleri” kategorisinde altı ve “fiziksel aktivite programlarının niteliklerini belirleme ve artırmaya yönelik çalışmalar” kategorisinde 11 çalışma yer almaktadır. Sonuçlar fiziksel aktivitenin OSB olan bireylerin gelişimlerine olumlu katkı sağladığını, ülkemizde yapılan çalışmaların fiziksel aktivitenin etkisi üzerine yoğunlaştığını ve fiziksel aktivite programlarının niteliği, farklı yetersizlik gruplarındaki bireylerle fiziksel aktivite düzeylerinin karşılaştırılması gibi farklı alanlarda çalışmalara ihtiyaç olduğunu göstermektedir. The aim of this study is to review thesis and articles on physical activities of individuals with autism spectrum disorders (ASD published between 2004 and 2014 in Turkey and in the world. Council of Higher Education (YÖK National Thesis Center, The Scientific and Technological Research Council of Turkey National Academic Network and Information Center (TÜBİTAK ULAKBİM, EbscoHost, Proquest Dissertations and Theses Global, SAGE and Springer

The History and Evolution of Young and Distant Radio Sources

Science.gov (United States)

Collier, Jordan

convex spectrum is generally thought to be caused by Synchrotron Self Absorption (SSA), an internal process in which the same population of electrons is responsible for the synchrotron emission and self-absorption. However, recent studies have shown that the convex spectrum may be caused by Free-Free Absorption (FFA), an external process in which an inhomogeneous screen absorbs the synchrotron emission. The majority of GPS and CSS samples consist of Jy-level and therefore, high-luminosity sources. VLBI images show that GPS and CSS sources typically have double-lobed, edge-brightened morphologies on mas scales, appearing as scaled down versions of Fanaroff-Riley Class II (FR II) galaxies. Recently, two low-luminosity GPS sources were found to have jet-brightened morphologies, which appeared as scaled down versions of Fanaroff-Riley Class I (FR I) galaxies. From this, it was proposed that there exists a morphology-luminosity break analogous to the FR I/II break and that low-luminosity GPS and CSS sources are the compact counterparts of FR I galaxies. However, this hypothesis remains unconfirmed, since very few samples of low-luminosity GPS and CSS sources exist. We conclude that, despite being historically favoured, single inhomogeneous SSA is not the dominant form of absorption amongst a large fraction of GPS and CSS sources. We find that FFA provides a good model for the majority of the spectra with observable turnovers, suggesting an inhomogeneous and clumpy ambient medium. Furthermore, we conclude that the majority of our GPS and CSS sources are young and evolving and may undergo recurrent activity over small time scales. We conclude that a very small fraction of GPS and CSS sources consists of frustrated, dying or restarted radio galaxies. (Abstract shortened by ProQuest.).

Studies in Intelligence

Science.gov (United States)

2010-03-01

files are lim- ited. Historical sources like the Proquest Historical Newspa- pers Database offer news con- tent back to the mid- 19th century or... Victorian Superspy Henri Le Caron, Peter Edwards Hide and Seek: The Search For Truth in Iraq, Charles Duelfer The Official C.I.A. Manual of Trickery and...news content throughout the world across the last half- century . FBIS reports became widely available for public use, in print and microfiche forms

Welfare-to-work interventions and their effects on the mental and physical health of lone parents and their children

Science.gov (United States)

Gibson, Marcia; Thomson, Hilary; Banas, Kasia; Lutje, Vittoria; McKee, Martin J; Martin, Susan P; Fenton, Candida; Bambra, Clare; Bond, Lyndal

2018-01-01

Background Lone parents in high-income countries have high rates of poverty (including in-work poverty) and poor health. Employment requirements for these parents are increasingly common. 'Welfare-to-work' (WtW) interventions involving financial sanctions and incentives, training, childcare subsidies and lifetime limits on benefit receipt have been used to support or mandate employment among lone parents. These and other interventions that affect employment and income may also affect people's health, and it is important to understand the available evidence on these effects in lone parents. Objectives To assess the effects of WtW interventions on mental and physical health in lone parents and their children living in high-income countries. The secondary objective is to assess the effects of welfare-to-work interventions on employment and income. Search methods We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Embase Ovid, PsycINFO EBSCO, ERIC EBSCO, SocINDEX EBSCO, CINAHL EBSCO, Econlit EBSCO, Web of Science ISI, Applied Social Sciences Index and Abstracts (ASSIA) via Proquest, International Bibliography of the Social Sciences (IBSS) via ProQuest, Social Services Abstracts via Proquest, Sociological Abstracts via Proquest, Campbell Library, NHS Economic Evaluation Database (NHS EED) (CRD York), Turning Research into Practice (TRIP), OpenGrey and Planex. We also searched bibliographies of included publications and relevant reviews, in addition to many relevant websites. We identified many included publications by handsearching. We performed the searches in 2011, 2013 and April 2016. Selection criteria Randomised controlled trials (RCTs) of mandatory or voluntary WtW interventions for lone parents in high-income countries, reporting impacts on parental mental health, parental physical health, child mental health or child physical health. Data collection and analysis One review author extracted data using a standardised extraction

Breast Cancer Risk From Modifiable and Non-Modifiable Risk Factors among Women in Southeast Asia: A Meta-Analysis

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Nindrea, Ricvan Dana; Aryandono, Teguh; Lazuardi, Lutfan

2017-12-28

Objective: The aim of this study was to determine breast cancer risk from modifiable and non-modifiable factors among women in Southeast Asia. Methods: This meta-analysis was performed on research articles on breast cancer risk factors in PubMed, ProQuest and EBSCO databases published between 1997 and October 2017. Pooled odds ratios (OR) are calculated using fixed and random-effect models. Data were processed using Review Manager 5.3 (RevMan 5.3). Results: From a total of 1,211 articles, 15 studies (1 cohort and 14 case control studies) met the criteria for systematic review. Meta-analysis results showed that of the known modifiable risk factors for breast cancer, parity (nulipara) had the highest odd ratio (OR = 1.85 [95% CI 1.47-2.32]) followed by body mass index (overweight) (OR = 1.61 [95% CI 1.43-1.80]) and use of oral contraceptives (OR = 1.27 [95% CI 1.07-1.51]). Of non-modifiable risk factors, family history of breast cancer had the highest odd ratio (OR = 2.53 [95% CI 1.25-5.09]), followed by age (≥ 40 years) (OR = 1.53 [95% CI 1.34-1.76]) and menopausal status (OR = 1.44 [95% CI 1.26-1.65]). Conclusion: This analysis confirmed associations between both modifiable risk factors (parity, body mass index and use of oral contraceptives) and non-modifiable risk factors (family history of breast cancer, age and menopausal status) with breast cancer. Creative Commons Attribution License

Communities of practice and the construction of the professional identities of nurse educators: A review of the literature.

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Woods, Andrew; Cashin, Andrew; Stockhausen, Lynette

2016-02-01

To comprehensively review the Community of Practice literature from nursing contexts to explore whether and how these communities contribute to the social construction of nurse educator professional identity. Due to the wide scope of predominately qualitative literature on the topic, papers were analysed and themed inductively. CINAHL, MEDLINE, COCHRANE, EBSCO databases, Emerald, Proquest & Google Scholar. These online databases were searched for relevant peer-reviewed journal papers in the English language with no date range specified. The search terms 'nurs* educator' and 'nurs* teacher' were combined with each of the terms 'communit* of practice', 'identity' and 'role' resulting in 293 peer-reviewed journal papers. Where abstracts were missing, introductory and background sections were skimmed for related content. Papers that made incidental reference to either professional identity or a Community of Practice were excluded. In total, 63 primary study or discussion papers were found to have a focus on nurse educator identity and/or communities of practice in healthcare contexts. Papers specifically focused on communities of practice in nursing (n=33) could only be found from the last 10 years (2005-2015). Only five of these focused on nurse educators. Community of Practice theory and the professional teaching literature offers collaborative and active ways for nurse educators to further develop their professional identities. Despite the emergence of communities of practice in the nursing literature, further studies are required to explore how such a construct can facilitate the social construction of nurse educator professional identity. Copyright © 2015 Elsevier Ltd. All rights reserved.

Prevention of Internet addiction: A systematic review.

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Vondráčková, Petra; Gabrhelík, Roman

2016-12-01

Background and aims Out of a large number of studies on Internet addiction, only a few have been published on the prevention of Internet addiction. The aim of this study is provide a systematic review of scientific articles regarding the prevention of Internet addiction and to identify the relevant topics published in this area of interest. Methods The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were adopted. The EBSCO, ProQuest Central, and PubMed databases were searched for texts published in English and Spanish between January 1995 and April 2016. A total of 179 original texts were obtained. After de-duplication and topic-relevance review, 108 texts were systematically classified and subjected to descriptive analysis and subsequent content analysis. Results The results of the content analysis yielded the following thematic areas: (a) target groups, (b) the improvement of specific skills, (c) program characteristics, and (d) environmental interventions. Discussion and conclusion Literature on the prevention of Internet addiction is scarce. There is an urgent need to introduce and implement new interventions for different at-risk populations, conduct well-designed research, and publish data on the effectiveness of these interventions. Developing prevention interventions should primarily target children and adolescents at risk of Internet addiction but also parents, teachers, peers, and others who are part of the formative environment of children and adolescents at risk of Internet addiction. Newly designed interventions focused on Internet addiction should be rigorously evaluated and the results published.

Helicobacter pylori, úlcera péptica y cáncer gástrico

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Carlos Ernesto Ruiz-Narváez

2018-01-01

Full Text Available Introducción. Por lo general, se ha descrito que la localización duodenal de la úlcera es más frecuente que la localización gástrica; sin embargo, en áreas con alta incidencia de cáncer gástrico la úlcera péptica parece tener una distribución anatómica distinta, existiendo predominio de la localización gástrica. Objetivo. Realizar una revisión narrativa de la literatura acerca de la distribución anatómica de la úlcera péptica en áreas con alta y baja incidencia de cáncer gástrico. Materiales y métodos. Se realizó una búsqueda estructurada de la literatura en las bases de datos ProQuest, EBSCO, ScienceDirect, PubMed, LILACS, Embase, Trip, SciELO y Cochrane Library con los términos “Peptic ulcer” AND “stomach neoplasm”; la búsqueda se hizo en inglés con sus equivalentes en español y se limitó a estudios observacionales, cohortes y casos y controles. Resultados. Se encontraron alrededor de 50 artículos con información relevante para la presente revisión. Conclusión. La literatura disponible sugiere que la úlcera péptica predomina en áreas donde el cáncer gástrico tiene alta incidencia, mientras que en zonas donde la incidencia de la neoplasia es baja predomina la localización duodenal.

Estrategias que modulan el síndrome de Burnout en enfermeros (as: una revisión bibliográfica

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Luz Dalila Vargas-Cruz

2017-01-01

Full Text Available Introducción: el síndrome de Burnout es la sensación de agotamiento y pérdida de interés por el trabajo que surge en profesionales que mantienen contacto diario con otras personas. Metodología: se realizó una revisión de artículos que reportan estrategias para modular el Burnout en profesionales de enfermería, en las siguientes bases de datos: Scielo, ProQuest, Sciencie Direct, Ovid Nursing, EBSCO, Medline, Pubmed y Wiley Online Library. Los descriptores en español, inglés y portugués utilizados fueron: Burnout, enfermeras, intervenciones. Se encontraron 1.833 artículos, de los cuales 17 cumplieron con los criterios de selección. Resultados: el efecto de las intervenciones pre y post para el Burnout fue medido con el Maslach Burnout Inventory y la Escala de Depresión y Ansiedad Hospitalaria, entre otros. Las intervenciones más reportadas fueron apoyo social, psico-educación, entrenamiento en la solución de problemas y en habilidades de comunicación. 16 artículos reportaron disminución o ausencia del Burnout después de las intervenciones, con cambios en las variables propuestas por Maslach y Jackson o en la sostenibilidad en el tiempo. Conclusión: se reportan estrategias para el Burnout sin distinción de las variables del mismo; sin embargo, se evidencian diferencias en los resultados frente a cambios positivos en cansancio emocional, en comparación con las otras variables

Towards an understanding of Internet-based problem shopping behaviour: The concept of online shopping addiction and its proposed predictors

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ROSE, SUSAN; DHANDAYUDHAM, ARUN

2014-01-01

Background: Compulsive and addictive forms of consumption and buying behaviour have been researched in both business and medical literature. Shopping enabled via the Internet now introduces new features to the shopping experience that translate to positive benefits for the shopper. Evidence now suggests that this new shopping experience may lead to problematic online shopping behaviour. This paper provides a theoretical review of the literature relevant to online shopping addiction (OSA). Based on this selective review, a conceptual model of OSA is presented. Method: The selective review of the literature draws on searches within databases relevant to both clinical and consumer behaviour literature including EBSCO, ABI Pro-Quest, Web of Science – Social Citations Index, Medline, PsycINFO and Pubmed. The article reviews current thinking on problematic, and specifically addictive, behaviour in relation to online shopping. Results: The review of the literature enables the extension of existing knowledge into the Internet-context. A conceptual model of OSA is developed with theoretical support provided for the inclusion of 7 predictor variables: low self-esteem, low self-regulation; negative emotional state; enjoyment; female gender; social anonymity and cognitive overload. The construct of OSA is defined and six component criteria of OSA are proposed based on established technological addiction criteria. Conclusions: Current Internet-based shopping experiences may trigger problematic behaviours which can be classified on a spectrum which at the extreme end incorporates OSA. The development of a conceptual model provides a basis for the future measurement and testing of proposed predictor variables and the outcome variable OSA. PMID:25215218

Towards an understanding of Internet-based problem shopping behaviour: The concept of online shopping addiction and its proposed predictors.

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Rose, Susan; Dhandayudham, Arun

2014-06-01

Compulsive and addictive forms of consumption and buying behaviour have been researched in both business and medical literature. Shopping enabled via the Internet now introduces new features to the shopping experience that translate to positive benefits for the shopper. Evidence now suggests that this new shopping experience may lead to problematic online shopping behaviour. This paper provides a theoretical review of the literature relevant to online shopping addiction (OSA). Based on this selective review, a conceptual model of OSA is presented. The selective review of the literature draws on searches within databases relevant to both clinical and consumer behaviour literature including EBSCO, ABI Pro-Quest, Web of Science - Social Citations Index, Medline, PsycINFO and Pubmed. The article reviews current thinking on problematic, and specifically addictive, behaviour in relation to online shopping. The review of the literature enables the extension of existing knowledge into the Internet-context. A conceptual model of OSA is developed with theoretical support provided for the inclusion of 7 predictor variables: low self-esteem, low self-regulation; negative emotional state; enjoyment; female gender; social anonymity and cognitive overload. The construct of OSA is defined and six component criteria of OSA are proposed based on established technological addiction criteria. Current Internet-based shopping experiences may trigger problematic behaviours which can be classified on a spectrum which at the extreme end incorporates OSA. The development of a conceptual model provides a basis for the future measurement and testing of proposed predictor variables and the outcome variable OSA.

Kapak ve İçindekiler

Directory of Open Access Journals (Sweden)

Kapak ve İçindekiler

2015-12-01

Full Text Available Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Chemical Abstracts Service , EBSCO Discovery Service, Google Scholar, WorldCat ve Zentralblatt MATH indekslerinde taranmaktadır.Süleyman Demirel University Journal of Natural and Applied Sciences is indexed in Chemical Abstracts Service, EBSCO Discovery Service, Google Scholar, WorldCat and Zentralblatt MATH.

Officership And The Profession: A Selected Bibliography

Science.gov (United States)

2013-09-01

General." Rolling Stone , July 2010, 91-97, 120-121. ProQuest; Rehkopf, Donald G., Jr., and Marybeth P. Ulrich. "Commentary and Reply: On ’The General...51-55. ProQuest Marble , Andrew. "How Are Great Leaders Made? Lessons from the Career of General John Shalikashvili (1936-2011)." Joint Force

Religiousness and spirituality in patients with bipolar disorder.

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De Fazio, Pasquale; Gaetano, Raffaele; Caroleo, Mariarita; Cerminara, Gregorio; Giannini, Francesca; Jaén Moreno, Maria Jose; Moreno Díaz, Maria Josè; Medina León, Antonio; Segura-García, Cristina

2015-01-01

Religiousness and spirituality (R/S) are often neglected features among psychiatric patients but important both for quality of life and coping strategies for mental disorders. In patients affected by bipolar disorder (BD), R/S can sometimes be confused with symptoms related to the psychiatric disorder. This study aimed to perform a clinical review of the relationship between R/S and BD. Data sources included Medline (OvidSP), CINAHL (Ebsco), EMBASE (Ovid), PsychINFO (Ebsco), Angeline, Cochrane Database of Systematic Reviews and Database of Abstract of Reviews of Effects, searching for pertinent Keywords: 'religiousness', 'spirituality' and 'bipolar disorder'. Nine works were found but only five used homogeneous samples with BD patients. R/S were important when facing symptoms and relapses in the lifeworld. These beliefs influenced the relationship with psychiatrists and spiritual figures of reference. R/S play a role as a psychosocial variable in the course of BD. However, the hypothesis that the R/S factor can be relevant both in terms of providing a protective effect as well as a provocative element in depressive or hypomanic phases was not fully supported at the moment.

An analysis of application of health informatics in Traditional Medicine: A review of four Traditional Medicine Systems.

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Raja Ikram, Raja Rina; Abd Ghani, Mohd Khanapi; Abdullah, Noraswaliza

2015-11-01

This paper shall first investigate the informatics areas and applications of the four Traditional Medicine systems - Traditional Chinese Medicine (TCM), Ayurveda, Traditional Arabic and Islamic Medicine and Traditional Malay Medicine. Then, this paper shall examine the national informatics infrastructure initiatives in the four respective countries that support the Traditional Medicine systems. Challenges of implementing informatics in Traditional Medicine Systems shall also be discussed. The literature was sourced from four databases: Ebsco Host, IEEE Explore, Proquest and Google scholar. The search term used was "Traditional Medicine", "informatics", "informatics infrastructure", "traditional Chinese medicine", "Ayurveda", "traditional Arabic and Islamic medicine", and "traditional malay medicine". A combination of the search terms above was also executed to enhance the searching process. A search was also conducted in Google to identify miscellaneous books, publications, and organization websites using the same terms. Amongst major advancements in TCM and Ayurveda are bioinformatics, development of Traditional Medicine databases for decision system support, data mining and image processing. Traditional Chinese Medicine differentiates itself from other Traditional Medicine systems with documented ISO Standards to support the standardization of TCM. Informatics applications in Traditional Arabic and Islamic Medicine are mostly ehealth applications that focus more on spiritual healing, Islamic obligations and prophetic traditions. Literature regarding development of health informatics to support Traditional Malay Medicine is still insufficient. Major informatics infrastructure that is common in China and India are automated insurance payment systems for Traditional Medicine treatment. National informatics infrastructure in Middle East and Malaysia mainly cater for modern medicine. Other infrastructure such as telemedicine and hospital information systems focus its

Comparing the Precision of Information Retrieval of MeSH-Controlled Vocabulary Search Method and a Visual Method in the Medline Medical Database.

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Hariri, Nadjla; Ravandi, Somayyeh Nadi

2014-01-01

Medline is one of the most important databases in the biomedical field. One of the most important hosts for Medline is Elton B. Stephens CO. (EBSCO), which has presented different search methods that can be used based on the needs of the users. Visual search and MeSH-controlled search methods are among the most common methods. The goal of this research was to compare the precision of the retrieved sources in the EBSCO Medline base using MeSH-controlled and visual search methods. This research was a semi-empirical study. By holding training workshops, 70 students of higher education in different educational departments of Kashan University of Medical Sciences were taught MeSH-Controlled and visual search methods in 2012. Then, the precision of 300 searches made by these students was calculated based on Best Precision, Useful Precision, and Objective Precision formulas and analyzed in SPSS software using the independent sample T Test, and three precisions obtained with the three precision formulas were studied for the two search methods. The mean precision of the visual method was greater than that of the MeSH-Controlled search for all three types of precision, i.e. Best Precision, Useful Precision, and Objective Precision, and their mean precisions were significantly different (P searches. Fifty-three percent of the participants in the research also mentioned that the use of the combination of the two methods produced better results. For users, it is more appropriate to use a natural, language-based method, such as the visual method, in the EBSCO Medline host than to use the controlled method, which requires users to use special keywords. The potential reason for their preference was that the visual method allowed them more freedom of action.

Ramadan Fasting Exerts Immunomodulatory Effects: Insights from a Systematic Review.

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Adawi, Mohammad; Watad, Abdulla; Brown, Stav; Aazza, Khadija; Aazza, Hicham; Zouhir, Mohamed; Sharif, Kassem; Ghanayem, Khaled; Farah, Raymond; Mahagna, Hussein; Fiordoro, Stefano; Sukkar, Samir Giuseppe; Bragazzi, Nicola Luigi; Mahroum, Naim

2017-01-01

Ramadan is the ninth month of the Islamic lunar calendar and is observed by Muslims as a month of fasting. All Muslim adults are expected to fast; nevertheless certain subgroups, including sick, frail subjects, and pregnant women, among others, are exempted. Ramadan fasting has been shown to impact on body systems in different manners. The influence of Ramadan fasting on immune system regulation remains elusive; however, immune system changes, such as the modulation of body response to various infectious, stressful, and other harmful events, are of great interest during fasting. In this paper, we performed an extensive systematic literature review of different scholarly databases (ISI/Web of Science, Scopus, PubMed,/MEDLINE, Google Scholar, Directory of Open Access Journals, EbscoHOST, Scirus, Science Direct, the Cochrane Library, and ProQuest), using the following key words: "fasting," "Ramadan," "Islam," and "immunity." Conclusions drawn from these findings included: (1) Ramadan fasting has been shown to only mildly influence the immune system and the alterations induced are transient, returning to basal pre-Ramadan status shortly afterward. (2) Ramadan fasting during the second trimester of pregnancy was shown to be safe and did not result in negative fetal outcomes, or maternal oxidative status alterations. (3) In cardiac patients, Ramadan fasting can have beneficial effects including lipid profile improvement and alleviation of oxidative stress. (4) In asthmatic patients as well as in patients with human immunodeficiency virus/acquired immunodeficiency syndrome and autoimmune disorders, fasting was safe. (5) In psychiatric patients, such as those suffering from schizophrenia, fasting could increase immunologic markers. (6) Fasting Muslim athletes who maintain intensive training schedule during Ramadan showed fluctuations of immunologic markers.

Educational intervention on physical restraint use in long-term care facilities – Systematic review and meta-analysis

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Shao-Huan Lan

2017-08-01

Full Text Available “Physical restraint” formerly used as a measure of protection for psychiatric patients is now widely used. However, existing studies showed that physical restraint not only has inadequate effect of protection but also has negative effects on residents. To analyzes the impact of educational program on the physical restraint use in long-term care facilities. Design: A systematic review with meta-analysis and meta-regression. Eight databases, including Cochrane Library, ProQuest, PubMed, EMBASE, EBSCO, Web of Science, Ovid Medline and Physiotherapy Evidence Database (PEDro, were searched up to January 2017. Eligible studies were classified by intervention and accessed for quality using the Quality Assessment Tool for quantitative studies. Sixteen research articles were eligible in the final review; 10 randomize control trail studies were included in the analysis. The meta-analysis revealed that the use of physical restraint was significantly less often in the experimental (education group (OR = 0.55, 95% CI: 0.39 to 0.78, p < 0.001 compared to the control group. Meta-regression revealed the period of post education would have decreased the effect of the restraint educational program (β: 0.08, p = 0.002; instead, the longer education period and more times of education would have a stronger effect of reducing the use of physical restraint (β: −0.07, p < 0.001; β: −0.04, p = 0.056. The educational program had an effect on the reduced use of physical restraint. The results of meta-regression suggest that long-term care facilities should provide a continuous education program of physical restraint for caregivers.

Effect of rhythmic auditory cueing on gait in cerebral palsy: a systematic review and meta-analysis.

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Ghai, Shashank; Ghai, Ishan; Effenberg, Alfred O

2018-01-01

Auditory entrainment can influence gait performance in movement disorders. The entrainment can incite neurophysiological and musculoskeletal changes to enhance motor execution. However, a consensus as to its effects based on gait in people with cerebral palsy is still warranted. A systematic review and meta-analysis were carried out to analyze the effects of rhythmic auditory cueing on spatiotemporal and kinematic parameters of gait in people with cerebral palsy. Systematic identification of published literature was performed adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses and American Academy for Cerebral Palsy and Developmental Medicine guidelines, from inception until July 2017, on online databases: Web of Science, PEDro, EBSCO, Medline, Cochrane, Embase and ProQuest. Kinematic and spatiotemporal gait parameters were evaluated in a meta-analysis across studies. Of 547 records, nine studies involving 227 participants (108 children/119 adults) met our inclusion criteria. The qualitative review suggested beneficial effects of rhythmic auditory cueing on gait performance among all included studies. The meta-analysis revealed beneficial effects of rhythmic auditory cueing on gait dynamic index (Hedge's g =0.9), gait velocity (1.1), cadence (0.3), and stride length (0.5). This review for the first time suggests a converging evidence toward application of rhythmic auditory cueing to enhance gait performance and stability in people with cerebral palsy. This article details underlying neurophysiological mechanisms and use of cueing as an efficient home-based intervention. It bridges gaps in the literature, and suggests translational approaches on how rhythmic auditory cueing can be incorporated in rehabilitation approaches to enhance gait performance in people with cerebral palsy.

Turismo religioso: fenómeno social y económico

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Sandra Maribel Tobón Perilla

2013-12-01

Full Text Available El turismo religioso, como fenómeno social y económico, ha cobrado interés entre académicos y empresarios por las dinámicas que ha generado en las comunidades receptoras de visitantes. Para los primeros, el interés radica en el estudio de las motivaciones, intereses y necesidades espirituales o culturales que parecen haber despertado los centros religiosos; para los segundos, el impacto económico y las oportunidades de rentas adicionales que generan los visitantes, creando nuevas oportunidades de negocios y fuentes de ingresos y empleo para las comunidades aledañas. Este documento hace una revisión a la bibliografía sobre el tema de turismo religioso en el mundo, para lo cual se consultaron las bases de datos ScienceDirect, Jstor, Ebsco, ProQuest y Google Académico, a fin de rastrear las publicaciones más relevantes y estudios empíricos sobre el tema, haciendo un recorrido desde 1963 hasta 2013. Se concluye que el turismo religioso es un fenómeno que tiene su antecedente en el peregrinaje a centros religiosos, pero donde además de las motivaciones, netamente religiosas –ofrecer un sacrificio, obtener un beneficio divino o expiar pecados–, existe un interés cultural, en términos de conocer centros históricos o profundizar sobre las raíces de un credo religioso. Adicionalmente, se observa cómo el turismo religioso se ha convertido en un motor de desarrollo económico de las ciudades receptoras de viajeros a sitios religioso.

Quality of reporting randomized controlled trials (RCTs) in diabetes in Iran; a systematic review.

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Gohari, Faeze; Baradaran, Hamid Reza; Tabatabaee, Morteza; Anijidani, Shabnam; Mohammadpour Touserkani, Fatemeh; Atlasi, Rasha; Razmgir, Maryam

2015-01-01

To determine the quality of randomized controlled clinical trial (RCT) reports in diabetes research in Iran. Systematized review. We included RCTs conducted on diabetes mellitus in Iran. Animal studies, educational interventions, and non-randomized trials were excluded. We excluded duplicated publications reporting the same groups of participants and intervention. Two independent reviewers identify all eligible articles specifically designed data extraction form. We searched through international databases; Scopus, ProQuest, EBSCO, Science Direct, Web of Science, Cochrane Library, PubMed; and national databases (In Persian language) such as Magiran, Scientific Information Database (SID) and IranMedex from January 1995 to January of 2013 Two investigators assessed the quality of reporting by CONSORT 2010 (Consolidated Standards of Reporting Trials) checklist statemen.t,. Discrepancies were resolved by third reviewer consulting. One hundred and eight five (185) studies were included and appraised. Half of them (55.7 %) were published in Iranian journals. Most (89.7 %) were parallel RCTs, and being performed on type2 diabetic patients (77.8 %). Less than half of the CONSORT items (43.2 %) were reported in studies, totally. The reporting of randomization and blinding were poor. A few studies 15.1 % mentioned the method of random sequence generation and strategy of allocation concealment. And only 34.8 % of trials report how blinding was applied. The findings of this study show that the quality of RCTs conducted in Iran in diabetes research seems suboptimal and the reporting is also incomplete however an increasing trend of improvement can be seen over time. Therefore, it is suggested Iranian researchers pay much more attention to design and methodological quality in conducting and reporting of diabetes RCTs.

Making electronic health records support quality management: A narrative review.

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Triantafillou, Peter

2017-08-01

Since the 1990s many hospitals in the OECD countries have introduced electronic health record (EHR) systems. A number of studies have examined the factors impinging on EHR implementation. Others have studied the clinical efficacy of EHR. However, only few studies have explored the (intermediary) factors that make EHR systems conducive to quality management (QM). Undertake a narrative review of existing studies in order to identify and discuss the factors conducive to making EHR support three dimensions of QM: clinical outcomes, managerial monitoring and cost-effectiveness. A narrative review of Web of Science, Cochrane, EBSCO, ProQuest, Scopus and three Nordic research databases. most studies do not specify the type of EHR examined. 39 studies were identified for analysis. 10 factors were found to be conducive to make EHR support QM. However, the contribution of EHR to the three specific dimensions of QM varied substantially. Most studies (29) included clinical outcomes. However, only half of these reported EHR to have a positive impact. Almost all the studies (36) dealt with the ability of EHR to enhance managerial monitoring of clinical activities, the far majority of which showed a positive relationship. Finally, only five dealt with cost-effectiveness of which two found positive effects. The findings resonates well with previous reviews, though two factors making EHR support QM seem new, namely: political goals and strategies, and integration of guidelines for clinical conduct. Lacking EHR type specification and diversity in study method imply that there is a strong need for further research on the factors that may make EHR may support QM. Copyright © 2017 Elsevier B.V. All rights reserved.

Assessment of knowledge and skills in information literacy instruction for rehabilitation sciences students: a scoping review.

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Boruff, Jill T; Harrison, Pamela

2018-01-01

This scoping review investigates how knowledge and skills are assessed in the information literacy (IL) instruction for students in physical therapy, occupational therapy, or speech-language pathology, regardless of whether the instruction was given by a librarian. The objectives were to discover what assessment measures were used, determine whether these assessment methods were tested for reliability and validity, and provide librarians with guidance on assessment methods to use in their instruction in evidence-based practice contexts. A scoping review methodology was used. A systematic search strategy was run in Ovid MEDLINE and adapted for CINAHL; EMBASE; Education Resources Information Center (ERIC) (EBSCO); Library and Information Science Abstracts (LISA); Library, Information Science & Technology Abstracts (LISTA); and Proquest Theses and Dissertations from 1990 to January 16, 2017. Forty articles were included for data extraction. Three major themes emerged: types of measures used, type and context of librarian involvement, and skills and outcomes described. Thirty-four measures of attitude and thirty-seven measures of performance were identified. Course products were the most commonly used type of performance measure. Librarians were involved in almost half the studies, most frequently as instructor, but also as author or assessor. Information literacy skills such as question formulation and database searching were described in studies that did not involve a librarian. Librarians involved in instructional assessment can use rubrics such as the Valid Assessment of Learning in Undergraduate Education (VALUE) when grading assignments to improve the measurement of knowledge and skills in course-integrated IL instruction. The Adapted Fresno Test could be modified to better suit the real-life application of IL knowledge and skills.

Hooked on Coal: Meeting Energy Demands in the Philippines

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2011-10-27

overview/seeking-balance-while-electricity-supply- surges-meet-demand-companies-struggle-find-domestic 10 Lenie Lectura , “Long, Uphill Climb Before...Yet, Says Scientist,” 2 February 2009, accessed 6 October 2017, Proquest. 59 Lenie Lectura , “DOE Chief Favors Nuclear-Power Generation for PHL...139, accessed 6 October 2017, Proquest. 63 Lenie Lectura , “DOE Chief Favors Nuclear-Power Generation for PHL,” Business Mirror, 30 August 2016

Women with Heart Failure Are at High Psychosocial Risk: A Systematic Review of How Sex and Gender Influence Heart Failure Self-Care

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Jody R. Thomas

2011-01-01

Full Text Available To improve patient support, it is important to understand how people view and experience Heart Failure (HF self-care. This systematic review of qualitative studies included all published studies that examine the influence of sex and gender on HF self-care. A systematic search was done for papers (1995–2010 indexed in Ovid MEDLINE, Ovid Medline, Ovid EMBASE, Ovid PsycINFO, CSA Sociological Abstracts, OVID AARP Ageline, EBSCO Academic Search Complete, EBSCO CINAHL, EBSCO SocINDEX, ISI Web of Science: Social Sciences Citation Index and Science Citation Index Expanded, and Scopus. After screening of 537 citations, six qualitative studies identified that differences existed in perceptions of symptoms with women having less family involvement and psychosocial support around self-care. Moreover, women had considerably more negative views of the future, themselves and their ability to fulfill social self-care roles. Women with HF represent a highly vulnerable population and need more support for psychosocial wellbeing and self-care.

2015 National Agenda for Digital Stewardship

Science.gov (United States)

2014-09-01

Gordon E J, CRM . Information Management Journal 46. 3 (May/Jun 2012): 26-28,30-31,47. Retrieved through ProQuest http://search.proquest.com/docview...parent organization’s goals and designated communities. At the same time, it is essential that a market of preservation services develop so that...under-provisioning in any competitive market system.83 To simplify: knowledge is often easy to use without paying for it. Further, knowledge often

Cyberspace: A Selected Bibliography

Science.gov (United States)

2013-05-01

Implications of the Private Sector’s Role in Cyber Conflict." Texas International Law Journal 47, no. 3 (Summer 2012): 617-640. ProQuest Lucas, George R...Cyberspace." Proceedings: United States Naval Institute 137, no. 2 (February 2011): 32-37. ProQuest Lin, Herbert . "Escalation Dynamics and Conflict...Harold Hongju. "International Law in Cyberspace." USCYBERCOM [United States Cyber Command] Inter-Agency Legal Conference, Ft. Meade , MD, September 18

The old age health security in rural China: where to go?

Science.gov (United States)

Dai, Baozhen

2015-11-04

The huge number of rural elders and the deepening health problems (e.g. growing threats of infectious diseases and chronic diseases etc.) place enormous pressure on old age health security in rural China. This study aims to provide information for policy-makers to develop effective measures for promoting rural elders' health care service access by examining the current developments and challenges confronted by the old age health security in rural China. Search resources are electronic databases, web pages of the National Bureau of Statistics of China and the National Health and Family Planning Commission of China on the internet, China Population and Employment Statistics Yearbook, China Civil Affairs' Statistical Yearbook and China Health Statistics Yearbooks etc. Articles were identified from Elsevier, Wiley, EBSCO, EMBASE, PubMed, SCI Expanded, ProQuest, and National Knowledge Infrastructure of China (CNKI) which is the most informative database in Chinese. Search terms were "rural", "China", "health security", "cooperative medical scheme", "social medical assistance", "medical insurance" or "community based medical insurance", "old", or "elder", "elderly", or "aged", "aging". Google scholar was searched with the same combination of keywords. The results showed that old age health security in rural China had expanded to all rural elders and substantially improved health care service utilization among rural elders. Increasing chronic disease prevalence rates, pressing public health issues, inefficient rural health care service provision system and lack of sufficient financing challenged the old age health security in rural China. Increasing funds from the central and regional governments for old age health security in rural China will contribute to reducing urban-rural disparities in provision of old age health security and increasing health equity among rural elders between different regions. Meanwhile, initiating provider payment reform may contribute to

Outcomes following Hip and Quadriceps Strengthening Exercises for Patellofemoral Syndrome: A Systematic Review and Meta-Analysis

Directory of Open Access Journals (Sweden)

Adebisi Bisi-Balogun

2015-10-01

Full Text Available There is growing evidence to support change in the rehabilitation strategy of patellofemoral pain syndrome (PFPS from traditional quadriceps strengthening exercises to inclusion of hip musculature strengthening in individuals with PFPS. Several studies have evaluated effects of quadriceps and hip musculature strengthening on PFPS with varying outcomes on pain and function. This systematic review and meta-analysis aims to synthesize outcomes of pain and function post-intervention and at follow-up to determine whether outcomes vary depending on the exercise strategy in both the short and long term. Electronic databases including MEDLINE, EMBASE, CINAHL, Web of Science, PubMed, Pedro database, Proquest, Science direct, and EBscoHost databases were searched for randomized control trials published between 1st of January 2005 and 31st of June 2015, comparing the outcomes of pain and function following quadriceps strengthening and hip musculature strengthening exercises in patients with PFPS. Two independent reviewers assessed each paper for inclusion and quality. Means and SDs were extracted from each included study to allow effect size calculations and comparison of results. Six randomized control trials met the inclusion criteria. Limited to moderate evidence indicates that hip abductor strengthening was associated with significantly lower pain post-intervention (SMD −0.88, −1.28 to −0.47 95% CI, and at 12 months (SMD −3.10, −3.71 to −2.50 95% CI with large effect sizes (greater than 0.80 compared to quadriceps strengthening. Our findings suggest that incorporating hip musculature strengthening in management of PFPS tailored to individual ability will improve short-term and long-term outcomes of rehabilitation. Further research evaluating the effects of quadriceps and hip abductors strengthening focusing on reduction in anterior knee pain and improvement in function in management of PFPS is needed.

Ramadan Fasting Exerts Immunomodulatory Effects: Insights from a Systematic Review

Directory of Open Access Journals (Sweden)

Mohammad Adawi

2017-11-01

Full Text Available Ramadan is the ninth month of the Islamic lunar calendar and is observed by Muslims as a month of fasting. All Muslim adults are expected to fast; nevertheless certain subgroups, including sick, frail subjects, and pregnant women, among others, are exempted. Ramadan fasting has been shown to impact on body systems in different manners. The influence of Ramadan fasting on immune system regulation remains elusive; however, immune system changes, such as the modulation of body response to various infectious, stressful, and other harmful events, are of great interest during fasting. In this paper, we performed an extensive systematic literature review of different scholarly databases (ISI/Web of Science, Scopus, PubMed,/MEDLINE, Google Scholar, Directory of Open Access Journals, EbscoHOST, Scirus, Science Direct, the Cochrane Library, and ProQuest, using the following key words: “fasting,” “Ramadan,” “Islam,” and “immunity.” Conclusions drawn from these findings included: (1 Ramadan fasting has been shown to only mildly influence the immune system and the alterations induced are transient, returning to basal pre-Ramadan status shortly afterward. (2 Ramadan fasting during the second trimester of pregnancy was shown to be safe and did not result in negative fetal outcomes, or maternal oxidative status alterations. (3 In cardiac patients, Ramadan fasting can have beneficial effects including lipid profile improvement and alleviation of oxidative stress. (4 In asthmatic patients as well as in patients with human immunodeficiency virus/acquired immunodeficiency syndrome and autoimmune disorders, fasting was safe. (5 In psychiatric patients, such as those suffering from schizophrenia, fasting could increase immunologic markers. (6 Fasting Muslim athletes who maintain intensive training schedule during Ramadan showed fluctuations of immunologic markers.

Effect of rhythmic auditory cueing on gait in cerebral palsy: a systematic review and meta-analysis

Directory of Open Access Journals (Sweden)

Ghai S

2017-12-01

Full Text Available Shashank Ghai,1 Ishan Ghai,2 Alfred O. Effenberg1 1Institute for Sports Science, Leibniz University Hannover, Hannover, Germany; 2School of Life Sciences, Jacobs University, Bremen, Germany Abstract: Auditory entrainment can influence gait performance in movement disorders. The entrainment can incite neurophysiological and musculoskeletal changes to enhance motor execution. However, a consensus as to its effects based on gait in people with cerebral palsy is still warranted. A systematic review and meta-analysis were carried out to analyze the effects of rhythmic auditory cueing on spatiotemporal and kinematic parameters of gait in people with cerebral palsy. Systematic identification of published literature was performed adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses and American Academy for Cerebral Palsy and Developmental Medicine guidelines, from inception until July 2017, on online databases: Web of Science, PEDro, EBSCO, Medline, Cochrane, Embase and ProQuest. Kinematic and spatiotemporal gait parameters were evaluated in a meta-analysis across studies. Of 547 records, nine studies involving 227 participants (108 children/119 adults met our inclusion criteria. The qualitative review suggested beneficial effects of rhythmic auditory cueing on gait performance among all included studies. The meta-analysis revealed beneficial effects of rhythmic auditory cueing on gait dynamic index (Hedge’s g=0.9, gait velocity (1.1, cadence (0.3, and stride length (0.5. This review for the first time suggests a converging evidence toward application of rhythmic auditory cueing to enhance gait performance and stability in people with cerebral palsy. This article details underlying neurophysiological mechanisms and use of cueing as an efficient home-based intervention. It bridges gaps in the literature, and suggests translational approaches on how rhythmic auditory cueing can be incorporated in rehabilitation approaches to

The effectiveness of outcome based education on the competencies of nursing students: A systematic review.

Science.gov (United States)

Tan, Katherine; Chong, Mei Chan; Subramaniam, Pathmawathy; Wong, Li Ping

2018-05-01

Outcome Based Education (OBE) is a student-centered approach of curriculum design and teaching that emphasize on what learners should know, understand, demonstrate and how to adapt to life beyond formal education. However, no systematic review has been seen to explore the effectiveness of OBE in improving the competencies of nursing students. To appraise and synthesize the best available evidence that examines the effectiveness of OBE approaches towards the competencies of nursing students. A systematic review of interventional experimental studies. Eight online databases namely CINAHL, EBSCO, Science Direct, ProQuest, Web of Science, PubMed, EMBASE and SCOPUS were searched. Relevant studies were identified using combined approaches of electronic database search without geographical or language filters but were limited to articles published from 2006 to 2016, handsearching journals and visually scanning references from retrieved studies. Two reviewers independently conducted the quality appraisal of selected studies and data were extracted. Six interventional studies met the inclusion criteria. Two of the studies were rated as high methodological quality and four were rated as moderate. Studies were published between 2009 and 2016 and were mostly from Asian and Middle Eastern countries. Results showed that OBE approaches improves competency in knowledge acquisition in terms of higher final course grades and cognitive skills, improve clinical skills and nursing core competencies and higher behavioural skills score while performing clinical skills. Learners' satisfaction was also encouraging as reported in one of the studies. Only one study reported on the negative effect. Although OBE approaches does show encouraging effects towards improving competencies of nursing students, more robust experimental study design with larger sample sizes, evaluating other outcome measures such as other areas of competencies, students' satisfaction, and patient outcomes are needed

Dying with dignity: a concept analysis.

Science.gov (United States)

Hemati, Zeinab; Ashouri, Elaheh; AllahBakhshian, Maryam; Pourfarzad, Zahra; Shirani, Farimah; Safazadeh, Shima; Ziyaei, Marziyeh; Varzeshnejad, Maryam; Hashemi, Maryam; Taleghani, Fariba

2016-05-01

This article is a report of an analysis of the concept of dying with dignity. Dignity is an important component of providing care for dying patients and their families. Nevertheless, given that this concept is poorly defined, concept analysis is one of the best ways to define and clarify the concept of death with dignity with the aim to enhance its application in clinical practice, research and education. A search of multiple nursing and social sciences databases was undertaken, including Academic Search Complete, Science Direct, ProQuest, Scopus, Medline, PubMed, EBSCO, Ovid, Noormage, Cinahl, Magiran, PsycINFO and SID. After an extensive review of the literature from 1998-2014, about 14 related articles were included in the study. Based on these articles, the applications, attributes and experimental results of and references to death with dignity were recorded. Based on this analysis, the most important attributes of this concept included respect for privacy, respect, spiritual peace and hope. The antecedents of this concept included consideration of moral values during caregiving, preservation of human dignity as a patient right and professional ethics, and belief in the dignity of self and others, consideration of culture in providing end-of-life care. The consequences of this concept included a sense of peace in the patient and their family, peaceful death and provision of patient privacy and comfort. The concept of patient dignity has been referred to in many contexts. However, considering the dignity of dying patients commensurate with their culture is the most important component of care provided by nurses to facilitate a peaceful death. Respecting the dignity of the patient results in the reduction of her/his suffering and prepares her/him for a comfortable death. © 2016 John Wiley & Sons Ltd.

Systematic review: Factors associated with return to work in burnout.

Science.gov (United States)

Kärkkäinen, R; Saaranen, T; Hiltunen, S; Ryynänen, O P; Räsänen, K

2017-08-01

Professional burnout predicts sick leave and even permanent withdrawal from the labour force. However, knowledge of the barriers to and facilitators of return to work (RTW) in such burnout is limited. To identify factors associated with RTW of burned-out individuals to inform occupational health care (OHC) RTW policy. A systematic search of peer-reviewed quantitative and mixed-method studies published from January 2005 to July 2016 in English and Finnish in ARTO, CINAHL (EBSCO), Medic, PsycINFO (ProQuest), PubMed, Scopus and Web of Science databases, followed by a manual search. We included studies that identify burnout with valid burnout measures and measure the degree of RTW or sick leave as outcomes. We excluded studies with heterogeneous samples without subgroup analyses of RTW in burnout cases. We included 10 studies (three experimental and seven observational) of the initial 1345 identified. The studies reported work-related factors; enhanced communication (positive association) and low control at work (negative association) and individual-related factors; male gender (positive association), covert coping (negative association), high over-commitment to work (positive association) and burnout-related factors; unimpaired sleep (positive association), duration of sick leave over 6 months (negative association) and part-time sick leave (positive association) associated with RTW in burnout. Associations between burnout rehabilitation and RTW, and the level of symptoms and cognitive impairment and RTW remained unclear. Few quantitative studies, of varied methodological quality, explore factors associated with RTW in burnout. Further research is needed to build an evidence base and develop guidelines for supportive OHC actions. © The Author 2017. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oup.com

Effect of Physical and Psychosocial Interventions on Hormone and Performance Outcomes in Professional Rugby Union Players: A Systematic Review.

Science.gov (United States)

Strahorn, Joshua; Serpell, Benjamin G; McKune, Andrew; Pumpa, Kate L

2017-11-01

Strahorn, J, Serpell, BG, McKune, A, and Pumpa, KL. Effect of physical and psychosocial interventions on hormone and performance outcomes in professional rugby union players: a systematic review. J Strength Cond Res 31(11): 3158-3169, 2017-This systematic review investigates the acute effects of physical or psychosocial interventions on testosterone and cortisol responses in elite male rugby union players, and the subsequent association with physical performance areas (e.g., strength, power, sprint performance) or key performance indicators (e.g., coach-identified skills). Medline (via EBSCO), SPORTDiscus, Web of Science, InformIT, ProQuest, Cochrane, and Scopus were searched for relevant articles. Nine articles met the inclusion criteria, with 6 articles examining the effect of speed, strength or power training, and the remaining 3 psychosocial interventions. Quality assessment of the articles as determined by their PEDro score was either 6 or 7 out of 11. This review found that both physical and psychosocial interventions can alter testosterone and cortisol, and physical performance areas important for rugby union are affected by these changes. The limited literature in the field supports the notion that physical interventions of short duration and high intensity, and psychosocial interventions that create a positive environment may elicit a hormonal response that is associated with favorable performance outcomes. Studies that reported psychosocial interventions suggest that testosterone and cortisol may be altered in elite rugby players without metabolic stress, something of great interest to elite athletes and coaches who are looking to elicit a performance advantage without increasing athlete load. Overall, this review identified that when the testosterone responses to an intervention are notably greater than that of cortisol, favorable outcomes are likely. Further research is required to improve our understanding on how to best manipulate training to induce

Ramadan Fasting Exerts Immunomodulatory Effects: Insights from a Systematic Review

Science.gov (United States)

Adawi, Mohammad; Watad, Abdulla; Brown, Stav; Aazza, Khadija; Aazza, Hicham; Zouhir, Mohamed; Sharif, Kassem; Ghanayem, Khaled; Farah, Raymond; Mahagna, Hussein; Fiordoro, Stefano; Sukkar, Samir Giuseppe; Bragazzi, Nicola Luigi; Mahroum, Naim

2017-01-01

Ramadan is the ninth month of the Islamic lunar calendar and is observed by Muslims as a month of fasting. All Muslim adults are expected to fast; nevertheless certain subgroups, including sick, frail subjects, and pregnant women, among others, are exempted. Ramadan fasting has been shown to impact on body systems in different manners. The influence of Ramadan fasting on immune system regulation remains elusive; however, immune system changes, such as the modulation of body response to various infectious, stressful, and other harmful events, are of great interest during fasting. In this paper, we performed an extensive systematic literature review of different scholarly databases (ISI/Web of Science, Scopus, PubMed,/MEDLINE, Google Scholar, Directory of Open Access Journals, EbscoHOST, Scirus, Science Direct, the Cochrane Library, and ProQuest), using the following key words: “fasting,” “Ramadan,” “Islam,” and “immunity.” Conclusions drawn from these findings included: (1) Ramadan fasting has been shown to only mildly influence the immune system and the alterations induced are transient, returning to basal pre-Ramadan status shortly afterward. (2) Ramadan fasting during the second trimester of pregnancy was shown to be safe and did not result in negative fetal outcomes, or maternal oxidative status alterations. (3) In cardiac patients, Ramadan fasting can have beneficial effects including lipid profile improvement and alleviation of oxidative stress. (4) In asthmatic patients as well as in patients with human immunodeficiency virus/acquired immunodeficiency syndrome and autoimmune disorders, fasting was safe. (5) In psychiatric patients, such as those suffering from schizophrenia, fasting could increase immunologic markers. (6) Fasting Muslim athletes who maintain intensive training schedule during Ramadan showed fluctuations of immunologic markers. PMID:29230208

[Efficiency indicators to assess the organ donation and transplantation process: systematic review of the literature].

Science.gov (United States)

Siqueira, Marina Martins; Araujo, Claudia Affonso; de Aguiar Roza, Bartira; Schirmer, Janine

2016-08-01

To search the literature and identify indicators used to monitor and control the organ donation and transplantation process and to group these indicators into categories. In November 2014, a systematic review of the literature was carried out in the following databases: Biblioteca Virtual em Saúde (BVS), EBSCO, Emerald, Proquest, Science Direct, and Web of Science. The following search terms (and the corresponding terms in Brazilian Portuguese) were employed: "efficiency," "indicators," "organ donation," "tissue and organ procurement," and "organ transplantation." Of the 344 articles retrieved, 23 original articles published between 1992 and 2013 were selected and reviewed for analysis of efficiency indicators. The review revealed 117 efficiency indicators, which were grouped according to similarity of content and divided into three categories: 1) 71 indicators related to organ donation, covering mortality statistics, communication of brain death, clinical status of donors and exclusion of donors for medical reasons, attitude of families, confirmation of donations, and extraction of organs and tissues; 2) 22 indicators related to organ transplantation, covering the surgical procedure per se and post-transplantation follow-up; and 3) 24 indicators related to the demand for organs and the resources of hospitals involved in the process. Even if organ transplantation is a recent phenomenon, the high number of efficiency indicators described in the literature suggests that scholars interested in this field have been searching for ways to measure performance. However, there is little standardization of the indicators used. Also, most indicators focus on the donation step, suggesting gaps in the measurement of efficiency at others points in the process. Additional indicators are needed to monitor important stages, such as organ distribution (for example, organ loss indicators) and post-transplantation aspects (for example, survival and quality of life).

Publishing in the Refereed International Journal of Astronomy & Earth Sciences Education JAESE

Science.gov (United States)

Slater, Timothy F.

2015-08-01

Filling a needed scholarly publishing avenue for astronomy education researchers and earth science education researchers, the Journal of Astronomy & Earth Sciences Education- JAESE was first published in 2014. JAESE is a scholarly, peer-reviewed scientific journal publishing original discipline-based education research and evaluation, with an emphasis of significant scientific results derived from ethical observations and systematic experimentation in science education and evaluation. International in scope, JAESE aims to publish the highest quality and timely articles from discipline-based education research that advance understanding of astronomy and earth sciences education and are likely to have a significant impact on the discipline or on policy. Articles are solicited describing both (i) systematic science education research and (ii) evaluated teaching innovations across the broadly defined Earth & space sciences education, including the disciplines of astronomy, climate education, energy resource science, environmental science, geology, geography, agriculture, meteorology, planetary sciences, and oceanography education. The publishing model adopted for this new journal is open-access and articles appear online in GoogleScholar, ERIC, EBSCO, ProQuest, and NASA SAO/ADS and are searchable in catalogs of 440,000 libraries that index online journals of its type. Rather than paid for by library subscriptions or by society membership dues, the annual budget is covered by page-charges paid by individual authors, their institutions, grants or donors: This approach is common in scientific journals, but is relatively uncommon in education journals. Authors retain their own copyright. The journal is owned by the Clute Institute in the United States, which owns and operates 17 scholarly journals and currently edited by former American Astronomical Society Education Officer Tim Slater, who is an endowed professor at the University of Wyoming and a Senior Scientist at the

Co-production of healthcare services with immigrant patients

DEFF Research Database (Denmark)

Radl-Karimi, Christina Mathilde; Nicolaisen, Anne; Sodemann, Morten

2018-01-01

’s methodology for scoping reviews. The data will stem from the following databases: PubMed, Scopus, Ovid EMBASE, EBSCO CINAHL, EBSCO PsycINFO, Cochrane Library, and Web of Science. We will also screen the websites of national authorities and research organisations for publications and review the literature...... a new perspective on how to collaboratively create the highest possible value for both the patient and the healthcare system. The concept acknowledges that all services are co-produced and directs attention to the relationship between patient and care provider. Co-production is still a new concept...

Seafood: Nutritional Gold for Seniors

Directory of Open Access Journals (Sweden)

Alexandra McManus

2010-12-01

Full Text Available ObjectivesTo conduct a systematic review of published evidence around seafood, health and seniors.MethodData sources reviewing included: Proquest; PubMed; Science Direct; Taylor and Francis; Cochran Collaboration; Web of Knowledge and Web of Science. Key search terms included seniors, ageing, fish, seafood, protein, health and various lifestyle conditions Results A diet high in marine source Omega-3 poly unsaturated fatty acids affords particular benefits for seniors in a reduced risk of all cause mortality, with the strongest evidence around coronary heart disease and ischemic stroke. Other benefits include reduced inflammation associated with arthritis and delay to onset and slowed progression of dementia and Alzheimer’s disease. Conclusion There is increasing evidence to support the regular seafood consumption (particularly oily fish as being protective against a number of aged-related health conditions. Seniors should be encouraged to consume 3500mg- 4000mg of marine source Omega-3 PUFAs each week.

A systematic review and meta-analysis of the safety, feasibility and effect of exercise in women with stage II+ breast cancer.

Science.gov (United States)

Singh, Ben; Spence, Rosalind R; Steele, Megan L; Sandler, Carolina X; Peake, Jonathan M; Hayes, Sandra C

2018-05-03

To systematically evaluate the safety, feasibility and effect of exercise among women with stage II+ breast cancer. CINAHL, Cochrane, Ebscohost, MEDLINE, Pubmed, ProQuest Health and Medical Complete, ProQuest Nursing and Allied Health Source, Science Direct and SPORTDiscus were searched for articles published prior to March 1, 2017. Randomised, controlled, exercise trials involving at least 50% of women diagnosed with stage II+ breast cancer were included. Risk of bias was assessed and adverse event severity was classified using the Common Terminology Criteria. Feasibility was evaluated by computing median (range) recruitment, withdrawal and adherence rates. Meta-analyses were performed to evaluate exercise safety and effects on health outcomes only. The influence of intervention characteristics (mode, supervision, duration and timing) on exercise outcomes were also explored. There were no differences in adverse events between exercise and usual care (risk difference: feasibility outcomes were similar, irrespective of exercise mode, supervision, duration, or timing. Effects of exercise for quality of life, fitness, fatigue, strength, anxiety, depression, body mass index and waist circumference compared with usual care were significant (standardised mean difference range: 0.17-0.77, pfeasibility and effects of exercise for those with stage II+ breast cancer, suggesting that national and international exercise guidelines appear generalizable to women with local, regional and distant breast cancer. Copyright © 2018. Published by Elsevier Inc.

The Chandra Source Catalog : Automated Source Correlation

Science.gov (United States)

Hain, Roger; Evans, I. N.; Evans, J. D.; Glotfelty, K. J.; Anderson, C. S.; Bonaventura, N. R.; Chen, J. C.; Davis, J. E.; Doe, S. M.; Fabbiano, G.; Galle, E.; Gibbs, D. G.; Grier, J. D.; Hall, D. M.; Harbo, P. N.; He, X.; Houck, J. C.; Karovska, M.; Lauer, J.; McCollough, M. L.; McDowell, J. C.; Miller, J. B.; Mitschang, A. W.; Morgan, D. L.; Nichols, J. S.; Nowak, M. A.; Plummer, D. A.; Primini, F. A.; Refsdal, B. L.; Rots, A. H.; Siemiginowska, A. L.; Sundheim, B. A.; Tibbetts, M. S.; Van Stone, D. W.; Winkelman, S. L.; Zografou, P.

2009-01-01

Chandra Source Catalog (CSC) master source pipeline processing seeks to automatically detect sources and compute their properties. Since Chandra is a pointed mission and not a sky survey, different sky regions are observed for a different number of times at varying orientations, resolutions, and other heterogeneous conditions. While this provides an opportunity to collect data from a potentially large number of observing passes, it also creates challenges in determining the best way to combine different detection results for the most accurate characterization of the detected sources. The CSC master source pipeline correlates data from multiple observations by updating existing cataloged source information with new data from the same sky region as they become available. This process sometimes leads to relatively straightforward conclusions, such as when single sources from two observations are similar in size and position. Other observation results require more logic to combine, such as one observation finding a single, large source and another identifying multiple, smaller sources at the same position. We present examples of different overlapping source detections processed in the current version of the CSC master source pipeline. We explain how they are resolved into entries in the master source database, and examine the challenges of computing source properties for the same source detected multiple times. Future enhancements are also discussed. This work is supported by NASA contract NAS8-03060 (CXC).

E-resource knowledge bases and link resolvers: an assessment of the current products and emerging trends

Directory of Open Access Journals (Sweden)

Marshall Breeding

2012-07-01

Full Text Available This article summarizes the findings of a study on e-resource knowledge bases and OpenURL-based link resolvers sponsored by the National Library of Sweden. The project involved soliciting detailed information from each of the providers of the major products in this genre, reviewing product information available on the web and in published articles, and conducting a survey addressed to libraries using these products. The report identified and presented comparative information on a top tier of products that includes KnowledgeWorks and 360 Link from Serials Solutions; SFX Global KnowledgeBase and the SFX link resolver from Ex Libris; LinkSource and the EBSCO Integrated Knowledge Base from EBSCO and the WorldCat knowledge base from OCLC. A second tier included TOUResolver from TDNet, Gold Rush from the Colorado Alliance of Research Libraries and GODOT from Simon Fraser University. Innovative Interfaces, Inc offers the WebBridge link resolver but does not produce a knowledge base. The library survey revealed relatively narrow differences in the statistical results. Serial Solutions emerged as more favorable in most categories except for end-user functionality where Ex Libris received higher ratings. The Global Open Knowledgebase project (GOKb is noteworthy as a nascent community-based effort to produce a knowledge base. Key trends noted include less emphasis on knowledge bases and link resolvers as stand-alone products as they become integral components of comprehensive discovery and automation products.

Source-space ICA for MEG source imaging.

Science.gov (United States)

Jonmohamadi, Yaqub; Jones, Richard D

2016-02-01

One of the most widely used approaches in electroencephalography/magnetoencephalography (MEG) source imaging is application of an inverse technique (such as dipole modelling or sLORETA) on the component extracted by independent component analysis (ICA) (sensor-space ICA + inverse technique). The advantage of this approach over an inverse technique alone is that it can identify and localize multiple concurrent sources. Among inverse techniques, the minimum-variance beamformers offer a high spatial resolution. However, in order to have both high spatial resolution of beamformer and be able to take on multiple concurrent sources, sensor-space ICA + beamformer is not an ideal combination. We propose source-space ICA for MEG as a powerful alternative approach which can provide the high spatial resolution of the beamformer and handle multiple concurrent sources. The concept of source-space ICA for MEG is to apply the beamformer first and then singular value decomposition + ICA. In this paper we have compared source-space ICA with sensor-space ICA both in simulation and real MEG. The simulations included two challenging scenarios of correlated/concurrent cluster sources. Source-space ICA provided superior performance in spatial reconstruction of source maps, even though both techniques performed equally from a temporal perspective. Real MEG from two healthy subjects with visual stimuli were also used to compare performance of sensor-space ICA and source-space ICA. We have also proposed a new variant of minimum-variance beamformer called weight-normalized linearly-constrained minimum-variance with orthonormal lead-field. As sensor-space ICA-based source reconstruction is popular in EEG and MEG imaging, and given that source-space ICA has superior spatial performance, it is expected that source-space ICA will supersede its predecessor in many applications.

Sources

International Nuclear Information System (INIS)

Duffy, L.P.

1991-01-01

This paper discusses the sources of radiation in the narrow perspective of radioactivity and the even narrow perspective of those sources that concern environmental management and restoration activities at DOE facilities, as well as a few related sources. Sources of irritation, Sources of inflammatory jingoism, and Sources of information. First, the sources of irritation fall into three categories: No reliable scientific ombudsman to speak without bias and prejudice for the public good, Technical jargon with unclear definitions exists within the radioactive nomenclature, and Scientific community keeps a low-profile with regard to public information. The next area of personal concern are the sources of inflammation. This include such things as: Plutonium being described as the most dangerous substance known to man, The amount of plutonium required to make a bomb, Talk of transuranic waste containing plutonium and its health affects, TMI-2 and Chernobyl being described as Siamese twins, Inadequate information on low-level disposal sites and current regulatory requirements under 10 CFR 61, Enhanced engineered waste disposal not being presented to the public accurately. Numerous sources of disinformation regarding low level radiation high-level radiation, Elusive nature of the scientific community, The Federal and State Health Agencies resources to address comparative risk, and Regulatory agencies speaking out without the support of the scientific community

Mindfulness-based stress reduction: an intervention to enhance the effectiveness of nurses' coping with work-related stress.

Science.gov (United States)

Smith, Sarah A

2014-06-01

This critical literature review explored the current state of the science regarding mindfulness-based stress reduction (MBSR) as a potential intervention to improve the ability of nurses to effectively cope with stress. Literature sources include searches from EBSCOhost, Gale PowerSearch, ProQuest, PubMed Medline, Google Scholar, Online Journal of Issues in Nursing, and reference lists from relevant articles. Empirical evidence regarding utilizing MBSR with nurses and other healthcare professionals suggests several positive benefits including decreased stress, burnout, and anxiety; and increased empathy, focus, and mood. Nurse use of MBSR may be a key intervention to help improve nurses' ability to cope with stress and ultimately improve the quality of patient care provided. © 2014 NANDA International, Inc.

The Chandra Source Catalog: Source Variability

Science.gov (United States)

Nowak, Michael; Rots, A. H.; McCollough, M. L.; Primini, F. A.; Glotfelty, K. J.; Bonaventura, N. R.; Chen, J. C.; Davis, J. E.; Doe, S. M.; Evans, J. D.; Evans, I.; Fabbiano, G.; Galle, E. C.; Gibbs, D. G., II; Grier, J. D.; Hain, R.; Hall, D. M.; Harbo, P. N.; He, X.; Houck, J. C.; Karovska, M.; Lauer, J.; McDowell, J. C.; Miller, J. B.; Mitschang, A. W.; Morgan, D. L.; Nichols, J. S.; Plummer, D. A.; Refsdal, B. L.; Siemiginowska, A. L.; Sundheim, B. A.; Tibbetts, M. S.; van Stone, D. W.; Winkelman, S. L.; Zografou, P.

2009-09-01

The Chandra Source Catalog (CSC) contains fields of view that have been studied with individual, uninterrupted observations that span integration times ranging from 1 ksec to 160 ksec, and a large number of which have received (multiple) repeat observations days to years later. The CSC thus offers an unprecedented look at the variability of the X-ray sky over a broad range of time scales, and across a wide diversity of variable X-ray sources: stars in the local galactic neighborhood, galactic and extragalactic X-ray binaries, Active Galactic Nuclei, etc. Here we describe the methods used to identify and quantify source variability within a single observation, and the methods used to assess the variability of a source when detected in multiple, individual observations. Three tests are used to detect source variability within a single observation: the Kolmogorov-Smirnov test and its variant, the Kuiper test, and a Bayesian approach originally suggested by Gregory and Loredo. The latter test not only provides an indicator of variability, but is also used to create a best estimate of the variable lightcurve shape. We assess the performance of these tests via simulation of statistically stationary, variable processes with arbitrary input power spectral densities (here we concentrate on results of red noise simulations) at variety of mean count rates and fractional root mean square variabilities relevant to CSC sources. We also assess the false positive rate via simulations of constant sources whose sole source of fluctuation is Poisson noise. We compare these simulations to an assessment of the variability found in real CSC sources, and estimate the variability sensitivities of the CSC.

Sources management; La gestion des sources

Energy Technology Data Exchange (ETDEWEB)

Mansoux, H.; Gourmelon; Scanff, P.; Fournet, F. [Institut de Radioprotection et de Surete Nucleaire, 92 - Fontenay-aux-Roses (France); Murith, Ch. [Office Federal de la SantePublique (Switzerland); Saint-Paul, N. [NOVAR, 75 - Paris (France); Colson, P. [Electricite de France (EDF/DPN), 93 - Saint-Denis (France); Jouve, A.; Feron, F. [Direction Generale de al Surete Nucleaire et de la Radioprotection, 75 - Paris (France); Haranger, D. [Electricite de France (EDF), 75 - Paris (France); Mathieu, P. [Institut Pasteur, 75 - Paris (France); Paycha, F. [CHU Louis Mourier, Unitede Medecine Nucleaire Assistance Publique-Hopitaux de Paris, 92 - Colombes (France); Israel, S. [CEGELEC NDT et la gestion des sources radioactives (France); Auboiroux, B. [APAVE (France); Chartier, P. [DRIRE de Basse-Normandie, Div. Surete Nucleaire et Radioprotection, 14 - Caen (France)

2005-07-01

Organized by the section of technical protection of the French society of radiation protection ( S.F.R.P.), these two days had for objective to review the evolution of the rule relative to the sources of ionising radiations 'sealed and unsealed radioactive sources, electric generators'. They addressed all the actors concerned by the implementation of the new regulatory system in the different sectors of activities ( research, medicine and industry): Authorities, manufacturers, and suppliers of sources, holders and users, bodies involved in the approval of sources, carriers. (N.C.)

Source Water Protection Contaminant Sources

Data.gov (United States)

Iowa State University GIS Support and Research Facility — Simplified aggregation of potential contaminant sources used for Source Water Assessment and Protection. The data is derived from IDNR, IDALS, and US EPA program...

Investigation of hemorheological and analgesic properties of Qing ...

African Journals Online (AJOL)

viscosity, plasma viscosity, activated partial thromboplastin time (APTT), thrombin time (TT), ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, .... mice were measured using automatic image.

Determination of Amino Acids in Medicinal Plants from Southern ...

African Journals Online (AJOL)

synthesis, cell metabolism, ammonia detoxification, antioxidant activity and alkaloid synthesis, ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, ..... Alkaloids provide protection to plants from a.

Most important needs of family members of critical patients in light of the critical care family needs inventory.

Science.gov (United States)

Padilla Fortunatti, Cristóbal Felipe

2014-01-01

This work sought to identify the most important needs for family members of adult critical patients as described in the literature pursuant to the dimensions established in the "Critical Care Family Needs Inventory" (CCFNI) by Molter and Leske. A literature review was carried out by using the CCFNI instrument. The databases used were: Pubmed, CINAHL, Proquest Nursing & Allied Health Source, Proquest Psychology Journals, LILACS, Science Direct, Ovid SP, PsyicINFO, and SciELO. The following limitations for the search were identified: adult patients, articles in English and Spanish, with abstract and complete text available and which had been published from 2003 to June 2013; 15 articles were included. The family's hope on desired results and sincere communication with the healthcare staff turned out to be the most relevant needs, while the least important were related to comfort and having support structures or systems. Most of the studies were conducted in Asia and North America revealing differences in the order of importance assigned to each necessity. Certain sociodemographic and cultural characteristics impact upon how family members rank their needs; this also occurs with the nature of the most important needs for the family and the factors determining their prioritization. The articles included in this review mention the frequent interaction with the family and their holistic view of the person beyond the illness, determine that nurses are the most appropriate professionals to know and satisfy the family needs of critical patients.

Most Important Needs of Family Members of Critical Patients in Light of the Critical Care Family Needs Inventory

Directory of Open Access Journals (Sweden)

Cristóbal Felipe Padilla Fortunatti

2014-07-01

Full Text Available Objective. This work sought to identify the most important needs for family members of adult critical patients as described in the literature pursuant to the dimensions established in the "Critical Care Family Needs Inventory" (CCFNI by Molter and Leske. Methodology. A literature review was carried out by using the CCFNI instrument. The databases used were: Pubmed, CINAHL, Proquest Nursing & Allied Health Source, Proquest Psychology Journals, LILACS, Science Direct, Ovid SP, PsyicINFO, and SciELO. The following limitations for the search were identified: adult patients, articles in English and Spanish, with abstract and complete text available and which had been published from 2003 to June 2013; 15 articles were included. Results. The family's hope on desired results and sincere communication with the healthcare staff turned out to be the most relevant needs, while the least important were related to comfort and having support structures or systems. Most of the studies were conducted in Asia and North America revealing differences in the order of importance assigned to each necessity. Certain sociodemographic and cultural characteristics impact upon how family members rank their needs; this also occurs with the nature of the most important needs for the family and the factors determining their prioritization. Conclusion. The articles included in this review mention the frequent interaction with the family and their holistic view of the person beyond the illness, determine that nurses are the most appropriate professionals to know and satisfy the family needs of critical patients.

Multi-drug resistant Staphylococcus aureus isolated from emergency ...

African Journals Online (AJOL)

were S. aureus-positive were confirmed using polymerase chain reaction (PCR). Antimicrobial ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ... High numbers of accident cases.

Effect of Permeation Enhancers on the Release Behavior and ...

African Journals Online (AJOL)

HP

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ... inhibition of norepinephrine and serotonin uptake. ..... structural organization and increase in their fluidity and partial ...

(Sw) DC (Leguminosae) pods

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ... Since the discovery of terpenes, more than 150 years ago ... anticancer drug discovery. .... (Agricultural Research Service/USDA) [17].

Anticancer activity of aqueous myrrh extract alone and in ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus, JournalSeek .... Composition. (%) ... Nuclear membrane was intact and there were prominent nucleoli (n). The cytoplasm ...

Specialist Bibliographic Databases.

Science.gov (United States)

Gasparyan, Armen Yuri; Yessirkepov, Marlen; Voronov, Alexander A; Trukhachev, Vladimir I; Kostyukova, Elena I; Gerasimov, Alexey N; Kitas, George D

2016-05-01

Specialist bibliographic databases offer essential online tools for researchers and authors who work on specific subjects and perform comprehensive and systematic syntheses of evidence. This article presents examples of the established specialist databases, which may be of interest to those engaged in multidisciplinary science communication. Access to most specialist databases is through subscription schemes and membership in professional associations. Several aggregators of information and database vendors, such as EBSCOhost and ProQuest, facilitate advanced searches supported by specialist keyword thesauri. Searches of items through specialist databases are complementary to those through multidisciplinary research platforms, such as PubMed, Web of Science, and Google Scholar. Familiarizing with the functional characteristics of biomedical and nonbiomedical bibliographic search tools is mandatory for researchers, authors, editors, and publishers. The database users are offered updates of the indexed journal lists, abstracts, author profiles, and links to other metadata. Editors and publishers may find particularly useful source selection criteria and apply for coverage of their peer-reviewed journals and grey literature sources. These criteria are aimed at accepting relevant sources with established editorial policies and quality controls.

Specialist Bibliographic Databases

Science.gov (United States)

2016-01-01

Specialist bibliographic databases offer essential online tools for researchers and authors who work on specific subjects and perform comprehensive and systematic syntheses of evidence. This article presents examples of the established specialist databases, which may be of interest to those engaged in multidisciplinary science communication. Access to most specialist databases is through subscription schemes and membership in professional associations. Several aggregators of information and database vendors, such as EBSCOhost and ProQuest, facilitate advanced searches supported by specialist keyword thesauri. Searches of items through specialist databases are complementary to those through multidisciplinary research platforms, such as PubMed, Web of Science, and Google Scholar. Familiarizing with the functional characteristics of biomedical and nonbiomedical bibliographic search tools is mandatory for researchers, authors, editors, and publishers. The database users are offered updates of the indexed journal lists, abstracts, author profiles, and links to other metadata. Editors and publishers may find particularly useful source selection criteria and apply for coverage of their peer-reviewed journals and grey literature sources. These criteria are aimed at accepting relevant sources with established editorial policies and quality controls. PMID:27134485

Antibiotic Susceptibility Pattern of Extended Spectrum ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ... Before the discovery of penicillin, which initiated the antibiotic ... Hospital from various service points between. January ...

Biological activities and phenolic contents of Argania spinosa L ...

African Journals Online (AJOL)

2570 ... Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, 300001 Nigeria. ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, .... plot of the drug concentration against the.

Antioxidant, hypoglycemic and anti-diabetic activities of Ziziphus ...

African Journals Online (AJOL)

2610 ... 1Department of Botany, Environment Program, Faculty of Biological Science, King ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African .... The extracts, fractions and drugs were orally.

Effect of Paris polyphylla extract on second-degree burns in rats

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ... accidents, which along with enormous cost of treatment, cause .... probably accelerated the process of wound healing ...

In vitro Anti-Leishmania Activity and Safety of Newly Synthesized ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus, JournalSeek ... virus (HAV), serotonin 5-HT6 receptor antagonist ..... Structure-activity relationships based on the obtained ...

In silico Assessment of Drug-like Properties of Alkaloids from Areca ...

African Journals Online (AJOL)

service were used to predict the drug-like properties of the alkaloids, including ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ..... estimate solubility and permeability in drug discovery.

Antinociceptive and anti-inflammatory properties of methanol fruit ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ... important for discovery of new and effective therapeutic agents. ... services of mankind, Lyons, France [8]. Preparation of ...

Large source test stand for H-(D-) ion source

International Nuclear Information System (INIS)

Larson, R.; McKenzie-Wilson, R.

1981-01-01

The Brookhaven National Laboratory Neutral Beam Group has constructed a large source test stand for testing of the various source modules under development. The first objective of the BNL program is to develop a source module capable of delivering 10A of H - (D - ) at 25 kV operating in the steady state mode with satisfactory gas and power efficiency. The large source test stand contains gas supply and vacuum pumping systems, source cooling systems, magnet power supplies and magnet cooling systems, two arc power supplies rated at 25 kW and 50 kW, a large battery driven power supply and an extractor electrode power supply. Figure 1 is a front view of the vacuum vessel showing the control racks with the 36'' vacuum valves and refrigerated baffles mounted behind. Figure 2 shows the rear view of the vessel with a BNL Mk V magnetron source mounted in the source aperture and also shows the cooled magnet coils. Currently two types of sources are under test: a large magnetron source and a hollow cathode discharge source

Lecciones aprendidas en la implementación de sistemas nacionales de información de salud interoperables: una revisión sistemática

Directory of Open Access Journals (Sweden)

Diana Paola Ovies-Bernal

2014-06-01

Full Text Available OBJETIVO: Identificar los criterios comunes utilizados en la implementación de sistemas nacionales de información de salud (SNIS interoperables en el mundo y proveer información científica validada sobre las dimensiones de la interoperabilidad. MÉTODOS: Revisión sistemática de artículos primarios publicados en inglés, portugués o español en revistas científicas entre 1990 y 2011 sobre la implementación de SNIS interoperables. La búsqueda se realizó en ocho bases de datos bibliográficas que abarcaran revistas electrónicas en ciencias de la salud e informática: Medline (Pubmed, Proquest, Ovid, EBSCO, MD Consult, Biblioteca Virtual de Salud, Metapress y SciELO. Se revisaron los textos completos de los artículos y se excluyeron los que se enfocaban solo en lo informático-técnico o en el componente normativo, y los que no cumplían con los criterios de calidad para revisiones sistemáticas de intervenciones. RESULTADOS: De 291 estudios encontrados y revisados, solo 5 cumplieron los criterios de inclusión y exponían el proceso de implementación de SNIS interoperables en Brasil, China, Estados Unidos, Turquía y la región semiautónoma de Zanzíbar. Se identificaron cinco criterios básicos comunes para la implementación del SNIS: las normas que respaldan el proceso, la capacitación del talento humano, las limitaciones financieras y estructurales, la definición de los estándares y la seguridad de la información. Se definieron cuatro dimensiones de interoperabilidad: técnica, semántica, legal y organizacional. CONCLUSIONES: Los criterios expuestos se deben ajustar a la situación real de cada país y se debe adoptar un enfoque proactivo en la implementación estratégica, sencilla y fiable de SNIS interoperables.

The relationship between patient volume and mortality in American trauma centres: a systematic review of the evidence.

Science.gov (United States)

Caputo, Lisa M; Salottolo, Kristin M; Slone, Denetta Sue; Mains, Charles W; Bar-Or, David

2014-03-01

To synthesise published and unpublished findings examining the relationship between institutional trauma centre volume or trauma patient volume per surgeon and mortality. Evidence on the relationship between patient volume and survival in trauma patients is inconclusive in the literature and remains controversial. A literature search was performed to identify studies published between 1976 and 2013 via MEDLINE (Pubmed) and the Cumulative Index to Nursing and Allied Health Literature (EbscoHost) as well as footnote chasing. Abstracts from appropriate conferences and ProQuest Dissertations and Theses were also searched. Inclusion criteria required studies to be original research published in English that examined the relationship between mortality and either institutional or per surgeon volume in American trauma centres. We employed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement checklist and flowchart. The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach was employed to rate the quality of the evidence. Of 1392 studies reviewed, 19 studies met defined inclusion criteria; all studies were retrospective. The definition of volume was heterogeneous across the studies. Patient population and analysis methods also varied across the studies. Sixteen studies (84%) examined the relationship between institutional trauma centre volume and mortality. Of the 16 studies, 12 examined the volume of severely injured patients and eight examined overall trauma patient volume. High institutional volume was associated with at least somewhat improved mortality in ten of 16 studies (63%); however, nearly half of these studies found only some subpopulations experienced benefits. In the remaining six studies, volume was not associated with any benefits. Four studies (25%) analysed the impact of surgeon volume on mortality. High volume per surgeon was associated with improved mortality in only one of four studies

What works in delivering dementia education or training to hospital staff? A critical synthesis of the evidence.

Science.gov (United States)

Surr, Claire A; Gates, Cara

2017-10-01

The quality of care delivered to people with dementia in hospital settings is of international concern. People with dementia occupy up to one quarter of acute hospital beds, however, staff working in hospitals report lack of knowledge and skills in caring for this group. There is limited evidence about the most effective approaches to training hospital staff on dementia. The purpose of this literature review was to examine published evidence on the most effective approaches to dementia training and education for hospital staff. The review was conducted using critical synthesis and included qualitative, quantitative and mixed/multi- methods studies. Kirkpatrick's four level model for the evaluation of training interventions was adopted to structure the review. The following databases were searched: MEDLINE, PsycINFO, CINAHL, AMED, British Education Index, Education Abstracts, ERIC (EbscoHost), The Cochrane Library-Cochrane reviews, Economic evaluations, CENTRAL (Wiley), HMIC (Ovid), ASSIA, IBSS (Proquest), Conference Proceedings Citation Indexes (Web of Science), using a combination of keyword for the following themes: Dementia/Alzheimer's, training/education, staff knowledge and patient outcomes. A total of 20 papers were included in the review, the majority of which were low or medium quality, impacting on generalisability. The 16 different training programmes evaluated in the studies varied in terms of duration and mode of delivery, although most employed face-to-face didactic techniques. Studies predominantly reported on reactions to training and knowledge, only one study evaluated outcomes across all of the levels of the Kirkpatrick model. Key features of training that appeared to be more acceptable and effective were identified related to training content, delivery methods, practicalities, duration and support for implementation. The review methodology enabled inclusion of a broad range of studies and permitted common features of successful programmes to be

Radioactive source recovery program responses to neutron source emergencies

International Nuclear Information System (INIS)

Dinehart, S.M.; Hatler, V.A.; Gray, D.W.; Guillen, A.D.

1997-01-01

Recovery of neutron sources containing Pu 239 and Be is currently taking place at Los Alamos National Laboratory. The program was initiated in 1979 by the Department of Energy (DOE) to dismantle and recover sources owned primarily by universities and the Department of Defense. Since the inception of this program, Los Alamos has dismantled and recovered more than 1000 sources. The dismantlement and recovery process involves the removal of source cladding and the chemical separation of the source materials to eliminate neutron emissions. While this program continues for the disposal of 239 Pu/Be sources, there is currently no avenue for the disposition of any sources other than those containing Pu 239 . Increasingly, there have been demands from agencies both inside and outside the Federal Government and from the public to dispose of unwanted sources containing 238 Pu/Be and 241 Am/Be. DOE is attempting to establish a formal program to recover these sources and is working closely with the Nuclear Regulatory Commission (NRC) on a proposed Memorandum of Understanding to formalize an Acceptance Program. In the absence of a formal program to handle 238 Pu/Be and 241 Am/Be neutron sources, Los Alamos has responded to several emergency requests to receive and recover sources that have been determined to be a threat to public health and safety. This presentation will: (1) review the established 239 Pu neutron source recovery program at Los Alamos, (2) detail plans for a more extensive neutron source disposal program, and (3) focus on recent emergency responses

Effect of Some Oligosaccharides on Functional Properties of Wheat ...

African Journals Online (AJOL)

The peak viscosity of wheat starch with oligosaccharides increased from 3238 ± 8 to 3822 ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African .... Measurement of water activity (Aw) during.

Introducing a performance-based objective clinical examination into ...

African Journals Online (AJOL)

... was applied to fourth year pharmacy students at a university in Northern Cyprus. ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ... Brazil, Japan & Malaysia as a primary component ...

Comparison of the effectiveness of polymer gel dosimeters (Magic ...

African Journals Online (AJOL)

demonstrate that the gel dosimeters are best suited for nuclear medicine. Keywords: Magic ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus .... Reaction rate. 2.15E-6.

In vitro assessment of activity of graphene silver composite sheets ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ... was cooled to −5 °C. The excess water was removed under ..... Microwave synthesis of graphene sheets supporting.

Evaluation of a root extract gel from Urtica dioica (Urticaceae) as ...

African Journals Online (AJOL)

Results: The prepared herbal gel was of light gray color with a smooth texture. ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African .... with Origin 9 software (Origin Labs., USA). P <.

Formulation and Permeation Kinetic Studies of Flurbiprofen Gel

African Journals Online (AJOL)

Viscosity, pH, spreadability, consistency and drug content of the flurbiprofen gels ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ..... The pH of the prepared lotions was measured at.

Cost Analysis of Medications Used in Upper Respiratory Tract ...

African Journals Online (AJOL)

The study was done in the clinics under University Sains Malaysia. A total of ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ..... and extent of drug wastage among female students.

Systematic review of surveillance by social media platforms for illicit drug use.

Science.gov (United States)

Kazemi, Donna M; Borsari, Brian; Levine, Maureen J; Dooley, Beau

2017-12-01

The use of social media (SM) as a surveillance tool of global illicit drug use is limited. To address this limitation, a systematic review of literature focused on the ability of SM to better recognize illicit drug use trends was addressed. A search was conducted in databases: PubMed, CINAHL via Ebsco, PsychINFO via Ebsco, Medline via Ebsco, ERIC, Cochrane Library, Science Direct, ABI/INFORM Complete and Communication and Mass Media Complete. Included studies were original research published in peer-reviewed journals between January 2005 and June 2015 that primarily focused on collecting data from SM platforms to track trends in illicit drug use. Excluded were studies focused on purchasing prescription drugs from illicit online pharmacies. Selected studies used a range of SM tools/applications, including message boards, Twitter and blog/forums/platform discussions. Limitations included relevance, a lack of standardized surveillance systems and a lack of efficient algorithms to isolate relevant items. Illicit drug use is a worldwide problem, and the rise of global social networking sites has led to the evolution of a readily accessible surveillance tool. Systematic approaches need to be developed to efficiently extract and analyze illicit drug content from social networks to supplement effective prevention programs. © The Author 2017. Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com

Reproducibility of Automated Voice Range Profiles, a Systematic Literature Review

DEFF Research Database (Denmark)

Printz, Trine; Rosenberg, Tine; Godballe, Christian

2018-01-01

literature on test-retest accuracy of the automated voice range profile assessment. Study design: Systematic review. Data sources: PubMed, Scopus, Cochrane Library, ComDisDome, Embase, and CINAHL (EBSCO). Methods: We conducted a systematic literature search of six databases from 1983 to 2016. The following......Objective: Reliable voice range profiles are of great importance when measuring effects and side effects from surgery affecting voice capacity. Automated recording systems are increasingly used, but the reproducibility of results is uncertain. Our objective was to identify and review the existing...... keywords were used: phonetogram, voice range profile, and acoustic voice analysis. Inclusion criteria were automated recording procedure, healthy voices, and no intervention between test and retest. Test-retest values concerning fundamental frequency and voice intensity were reviewed. Results: Of 483...

Industrial ion sources broadbeam gridless ion source technology

CERN Document Server

Zhurin, Viacheslav V

2012-01-01

Due to the large number of uses of ion sources in academia and industry, those who utilize these sources need up to date and coherent information to keep themselves abreast of developments and options, and to chose ideal solutions for quality and cost-effectiveness. This book, written by an author with a strong industrial background and excellent standing, is the comprehensive guide users and developers of ion sources have been waiting for. Providing a thorough refresher on the physics involved, this resource systematically covers the source types, components, and the operational parameters.

Ion source requirements for pulsed spallation neutron sources

International Nuclear Information System (INIS)

Alonso, J.R.

1995-10-01

The neutron scattering community has endorsed the need for a high- power (1 to 5 MW) accelerator-driven source of neutrons for materials research. Properly configured, the accelerator could produce very short (sub-microsecond) bursts of cold neutrons, said time structure offering advantages over the continuous flux from a reactor for a large class of experiments. The recent cancellation of the ANS reactor project has increased the urgency to develop a comprehensive strategy based on the best technological scenarios. Studies to date have built on the experience from ISIS (the 160 KW source in the UK), and call for a high-current (approx. 100 mA peak) H - source-linac combination injecting into one or more accumulator rings in which beam may be further accelerated. The 1 to 5 GeV proton beam is extracted in a single turn and brought to the target-moderator stations. The high current, high duty-factor, high brightness and high reliability required of the ion source present a very large challenge to the ion source community. A workshop held in Berkeley in October 1994, analyzed in detail the source requirements for proposed accelerator scenarios, the present performance capabilities of different H - source technologies, and identified necessary R ampersand D efforts to bridge the gap

The Chandra Source Catalog 2.0: Estimating Source Fluxes

Science.gov (United States)

Primini, Francis Anthony; Allen, Christopher E.; Miller, Joseph; Anderson, Craig S.; Budynkiewicz, Jamie A.; Burke, Douglas; Chen, Judy C.; Civano, Francesca Maria; D'Abrusco, Raffaele; Doe, Stephen M.; Evans, Ian N.; Evans, Janet D.; Fabbiano, Giuseppina; Gibbs, Danny G., II; Glotfelty, Kenny J.; Graessle, Dale E.; Grier, John D.; Hain, Roger; Hall, Diane M.; Harbo, Peter N.; Houck, John C.; Lauer, Jennifer L.; Laurino, Omar; Lee, Nicholas P.; Martínez-Galarza, Juan Rafael; McCollough, Michael L.; McDowell, Jonathan C.; McLaughlin, Warren; Morgan, Douglas L.; Mossman, Amy E.; Nguyen, Dan T.; Nichols, Joy S.; Nowak, Michael A.; Paxson, Charles; Plummer, David A.; Rots, Arnold H.; Siemiginowska, Aneta; Sundheim, Beth A.; Tibbetts, Michael; Van Stone, David W.; Zografou, Panagoula

2018-01-01

The Second Chandra Source Catalog (CSC2.0) will provide information on approximately 316,000 point or compact extended x-ray sources, derived from over 10,000 ACIS and HRC-I imaging observations available in the public archive at the end of 2014. As in the previous catalog release (CSC1.1), fluxes for these sources will be determined separately from source detection, using a Bayesian formalism that accounts for background, spatial resolution effects, and contamination from nearby sources. However, the CSC2.0 procedure differs from that used in CSC1.1 in three important aspects. First, for sources in crowded regions in which photometric apertures overlap, fluxes are determined jointly, using an extension of the CSC1.1 algorithm, as discussed in Primini & Kashyap (2014ApJ...796…24P). Second, an MCMC procedure is used to estimate marginalized posterior probability distributions for source fluxes. Finally, for sources observed in multiple observations, a Bayesian Blocks algorithm (Scargle, et al. 2013ApJ...764..167S) is used to group observations into blocks of constant source flux.In this poster we present details of the CSC2.0 photometry algorithms and illustrate their performance in actual CSC2.0 datasets.This work has been supported by NASA under contract NAS 8-03060 to the Smithsonian Astrophysical Observatory for operation of the Chandra X-ray Center.

Positron sources

International Nuclear Information System (INIS)

Chehab, R.

1994-01-01

A tentative survey of positron sources is given. Physical processes on which positron generation is based are indicated and analyzed. Explanation of the general features of electromagnetic interactions and nuclear β + decay makes it possible to predict the yield and emittance for a given optical matching system between the positron source and the accelerator. Some kinds of matching systems commonly used - mainly working with solenoidal field - are studied and the acceptance volume calculated. Such knowledge is helpful in comparing different matching systems. Since for large machines, a significant distance exists between the positron source and the experimental facility, positron emittance has to be preserved during beam transfer over large distances and methods used for that purpose are indicated. Comparison of existing positron sources leads to extrapolation to sources for future linear colliders. Some new ideas associated with these sources are also presented. (orig.)

Sources for charged particles; Les sources de particules chargees

Energy Technology Data Exchange (ETDEWEB)

Arianer, J.

1997-09-01

This document is a basic course on charged particle sources for post-graduate students and thematic schools on large facilities and accelerator physics. A simple but precise description of the creation and the emission of charged particles is presented. This course relies on every year upgraded reference documents. Following relevant topics are considered: electronic emission processes, technological and practical considerations on electron guns, positron sources, production of neutral atoms, ionization, plasma and discharge, different types of positive and negative ion sources, polarized particle sources, materials for the construction of ion sources, low energy beam production and transport. (N.T.).

GANIL Workshop on Ion Sources; Journees Sources d'Ions

Energy Technology Data Exchange (ETDEWEB)

Leroy, Renan [Grand Accelerateur National d' Ions Lourds (GANIL), 14 - Caen (France)

1999-07-01

The proceedings of the GANIL Workshop on Ion Sources held at GANIL - Caen on 18-19 March 1999 contains 13 papers aiming at improving the old source operation and developing new types of sources for nuclear research and studies of ion physics. A number of reports are devoted to applications like surface treatment, ion implantation or fusion injection. The 1+{yields}n+ transformation, charged particle transport in ECR sources, addition of cesium and xenon in negative ion sources and other basic issues in ion sources are also addressed.

Ion source requirements for pulsed spallation neutron sources

International Nuclear Information System (INIS)

Alonso, J.R.

1996-01-01

The neutron scattering community has endorsed the need for a high-power (1 to 5 MW) accelerator-driven source of neutrons for materials research. Properly configured, the accelerator could produce very short (sub-microsecond) bursts of cold neutrons, said time structure offering advantages over the continuous flux from a reactor for a large class of experiments. The recent cancellation of the ANS reactor project has increased the urgency to develop a comprehensive strategy based on the best technological scenarios. Studies to date have built on the experience from ISIS (the 160 kW source in the UK), and call for a high-current (approx. 100 mA peak) H - source-linac combination injecting into one or more accumulator rings in which beam may be further accelerated. The 1 to 5 GeV proton beam is extracted in a single turn and brought to the target-moderator stations. The high current, high duty-factor, high brightness and high reliability required of the ion source present a very large challenge to the ion source community. A workshop held in Berkeley in October 1994, analyzed in detail the source requirements for proposed accelerator scenarios, the present performance capabilities of different H - source technologies, and identified necessary R ampersand D efforts to bridge the gap. copyright 1996 American Institute of Physics

Chandra Source Catalog: Background Determination and Source Detection

Science.gov (United States)

McCollough, Michael L.; Rots, A. H.; Primini, F. A.; Evans, I. N.; Glotfelty, K. J.; Hain, R.; Anderson, C. S.; Bonaventura, N. R.; Chen, J. C.; Davis, J. E.; Doe, S. M.; Evans, J. D.; Fabbiano, G.; Galle, E.; Gibbs, D. G.; Grier, J. D.; Hall, D. M.; Harbo, P. N.; He, X.; Houck, J. C.; Karovska, M.; Lauer, J.; McDowell, J. C.; Miller, J. B.; Mitschang, A. W.; Morgan, D. L.; Nichols, J. S.; Nowak, M. A.; Plummer, D. A.; Refsdal, B. L.; Siemiginowska, A. L.; Sundheim, B. A.; Tibbetts, M. S.; Van Stone, D. W.; Winkelman, S. L.; Zografou, P.

2009-01-01

The Chandra Source Catalog (CSC) is a major project in which all of the pointed imaging observations taken by the Chandra X-Ray Observatory will used to generate the most extensive X-ray source catalog produced to date. Early in the development of the CSC it was recognized that the ability to estimate local background levels in an automated fashion would be critical for essential CSC tasks such as source detection, photometry, sensitivity estimates, and source characterization. We present a discussion of how such background maps are created directly from the Chandra data and how they are used in source detection. The general background for Chandra observations is rather smoothly varying, containing only low spatial frequency components. However, in the case of ACIS data, a high spatial frequency component is added that is due to the readout streaks of the CCD chips. We discuss how these components can be estimated reliably using the Chandra data and what limitations and caveats should be considered in their use. We will discuss the source detection algorithm used for the CSC and the effects of the background images on the detection results. We will also touch on some the Catalog Inclusion and Quality Assurance criteria applied to the source detection results. This work is supported by NASA contract NAS8-03060 (CXC).

Epigallocatechin-3-gallate Promotes Osteoblastic Activity in Human ...

African Journals Online (AJOL)

Keywords: Epigallocatechin-3-gallate, Osteoporosis, Osteoclast, Proliferation, Estrogen receptor. Tropical Journal of Pharmaceutical Research is indexed by Science Citation Index (SciSearch), Scopus,. International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ...

In vitro evaluation of mutagenicity and genotoxicity of sitagliptin ...

African Journals Online (AJOL)

Keywords: Sitagliptin, Artificial sweeteners, Comet assay, DNA damage, Ames assay, Genotoxicity,. Mutagenicity. Tropical Journal of Pharmaceutical Research is indexed by Science Citation Index (SciSearch), Scopus,. International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African.

Sources management

International Nuclear Information System (INIS)

Mansoux, H.; Gourmelon; Scanff, P.; Fournet, F.; Murith, Ch.; Saint-Paul, N.; Colson, P.; Jouve, A.; Feron, F.; Haranger, D.; Mathieu, P.; Paycha, F.; Israel, S.; Auboiroux, B.; Chartier, P.

2005-01-01

Organized by the section of technical protection of the French society of radiation protection ( S.F.R.P.), these two days had for objective to review the evolution of the rule relative to the sources of ionising radiations 'sealed and unsealed radioactive sources, electric generators'. They addressed all the actors concerned by the implementation of the new regulatory system in the different sectors of activities ( research, medicine and industry): Authorities, manufacturers, and suppliers of sources, holders and users, bodies involved in the approval of sources, carriers. (N.C.)

Toward a comprehensive, theoretical model of compassion fatigue: An integrative literature review.

Science.gov (United States)

Coetzee, Siedine K; Laschinger, Heather K S

2018-03-01

This study was an integrative literature review in relation to compassion fatigue models, appraising these models, and developing a comprehensive theoretical model of compassion fatigue. A systematic search on PubMed, EbscoHost (Academic Search Premier, E-Journals, Medline, PsycINFO, Health Source Nursing/Academic Edition, CINAHL, MasterFILE Premier and Health Source Consumer Edition), gray literature, and manual searches of included reference lists was conducted in 2016. The studies (n = 11) were analyzed, and the strengths and limitations of the compassion fatigue models identified. We further built on these models through the application of the conservation of resources theory and the social neuroscience of empathy. The compassion fatigue model shows that it is not empathy that puts nurses at risk of developing compassion fatigue, but rather a lack of resources, inadequate positive feedback, and the nurse's response to personal distress. By acting on these three aspects, the risk of developing compassion fatigue can be addressed, which could improve the retention of a compassionate and committed nurse workforce. © 2017 John Wiley & Sons Australia, Ltd.

Positron sources

International Nuclear Information System (INIS)

Chehab, R.

1989-01-01

A tentative survey of positron sources is given. Physical processes on which positron generation is based are indicated and analyzed. Explanation of the general features of electromagnetic interactions and nuclear β + decay makes it possible to predict the yield and emittance for a given optical matching system between the positron source and the accelerator. Some kinds of matching systems commonly used - mainly working with solenoidal fields - are studied and the acceptance volume calculated. Such knowledge is helpful in comparing different matching systems. Since for large machines, a significant distance exists between the positron source and the experimental facility, positron emittance has to be preserved during beam transfer over large distances and methods used for that purpose are indicated. Comparison of existing positron sources leads to extrapolation to sources for future linear colliders

α-Mangostin suppresses 12-o-tetradecanoylphorbol-13- acetate ...

African Journals Online (AJOL)

α-Mangostin, Matrix metalloproteinase, Osteosarcoma, Cell migration, 12-O-. Tetradecanoylphorbol-13-acetate ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus, JournalSeek .... The results were analyzed using Student's t-test, and differences were.

C-188 cobalt-60 sealed source integrity: source monitoring

International Nuclear Information System (INIS)

Defalco, G.M.; Shah, V.

1995-01-01

The integrity of C-188 cobalt-60 sealed sources used for radiation processing will be a key factor in the continued industrial acceptance and growth of gamma irradiation technology. Given the public's relatively poor understanding of most nuclear topics and the news media's tendency to sensationalize events, it is appropriate for suppliers and users of gamma technology to be vigilant and conservative regarding the application of cobalt-60 sources to industrial purposes. Nordion's recent decision to extend the optional warranty on its C-188 cobalt-60 sealed source from 15 years to 20 years is based on over 30 years of data generated from its on-going SOURCE SURVEILLANCE PROGRAM. This paper presents an overview of the C-188 SOURCE SURVEILLANCE PROGRAM. (author)

Nurse competence: a concept analysis.

Science.gov (United States)

Smith, Sarah A

2012-10-01

  The purpose of this analysis was to explore the concept of nurse competence.   Data sources include EBSCOhost, Gale PowerSearch, ProQuest, PubMed Medline, Google Scholar, and Online Journal of Issues in Nursing.   This paper utilizes Rodgers' evolutionary method to analyze the concept of nurse competence.   Antecedents to nurse competence include personal and external motivations. Attributes include integrating knowledge into practice, experience, critical thinking, proficient skills, caring, communication, environment, motivation, and professionalism. Consequences include confidence, safe practice, and holistic care. Implications for nursing responsibility regarding defining nurse competence and ensuring nurse competence need to be identified. More research is needed to determine the best evaluation methods for the different facets of nurse competence. © 2012, The Author. International Journal of Nursing Knowledge © 2012, NANDA International.

Nurses’ experiences of working in organizations undergoing restructuring: A metasynthesis of qualitative research studies

DEFF Research Database (Denmark)

Sørensen, Dorthe; Jensen, Anne Sofie Bøtcher

2017-01-01

experience working in organizations undergoing structural changes. Design: The review is designed as a metasynthesis and follows the guidelines put forth by Sandelowski and Barroso for synthesizing qualitative research. Data sources: From January to April 2015, literature searches were conducted...... in the CINAHL, PubMed, ProQuest, and Web of Science databases for the period from 1994 to 2014. Review methods: A total of 762 articles were found and screened, 12 of which were included in the review after being appraised using a specially designed reading guide. The inclusion criteria were qualitative studies......Background: Health care organizations worldwide undergo continual reconfiguration and structural changes in order to optimize the use of resources, reduce costs, and improve the quality of treatment. Objective: The objective of this study was to synthesize qualitative studies of how nurses...

Introducing a performance-based objective clinical examination into ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ... standards and recommendations, many pharmacy schools in the US have adopted ..... including defining methods for reporting and ... financial resources and faculty time, which was ... students in Malaysia [12].

Detection of drug-induced dyslipidaemia in HIV-positive patients ...

African Journals Online (AJOL)

Tropical Journal of Pharmaceutical Research is indexed by Science Citation Index (SciSearch), Scopus,. International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus, JournalSeek, Journal Citation Reports/Science Edition, Directory of Open Access Journals.

Extended-Spectrum Beta-Lactamase (ESBL)–Producing Gram ...

African Journals Online (AJOL)

Tropical Journal of Pharmaceutical Research is indexed by Science Citation Index (SciSearch), Scopus,. International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus, JournalSeek, Journal Citation Reports/Science Edition, Directory of Open Access Journals.

Bactericidal, Bacteriolytic, and Antibacterial Virulence Activities of ...

African Journals Online (AJOL)

Tropical Journal of Pharmaceutical Research is indexed by Science Citation Index (SciSearch), Scopus,. International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus, JournalSeek, Journal Citation Reports/Science Edition, Directory of Open Access Journals.

The Chandra Source Catalog: Background Determination and Source Detection

Science.gov (United States)

McCollough, Michael; Rots, Arnold; Primini, Francis A.; Evans, Ian N.; Glotfelty, Kenny J.; Hain, Roger; Anderson, Craig S.; Bonaventura, Nina R.; Chen, Judy C.; Davis, John E.; Doe, Stephen M.; Evans, Janet D.; Fabbiano, Giuseppina; Galle, Elizabeth C.; Danny G. Gibbs, II; Grier, John D.; Hall, Diane M.; Harbo, Peter N.; He, Xiang Qun (Helen); Houck, John C.; Karovska, Margarita; Kashyap, Vinay L.; Lauer, Jennifer; McCollough, Michael L.; McDowell, Jonathan C.; Miller, Joseph B.; Mitschang, Arik W.; Morgan, Douglas L.; Mossman, Amy E.; Nichols, Joy S.; Nowak, Michael A.; Plummer, David A.; Refsdal, Brian L.; Siemiginowska, Aneta L.; Sundheim, Beth A.; Tibbetts, Michael S.; van Stone, David W.; Winkelman, Sherry L.; Zografou, Panagoula

2009-09-01

The Chandra Source Catalog (CSC) is a major project in which all of the pointed imaging observations taken by the Chandra X-Ray Observatory are used to generate one of the most extensive X-ray source catalog produced to date. Early in the development of the CSC it was recognized that the ability to estimate local background levels in an automated fashion would be critical for essential CSC tasks such as source detection, photometry, sensitivity estimates, and source characterization. We present a discussion of how such background maps are created directly from the Chandra data and how they are used in source detection. The general background for Chandra observations is rather smoothly varying, containing only low spatial frequency components. However, in the case of ACIS data, a high spatial frequency component is added that is due to the readout streaks of the CCD chips. We discuss how these components can be estimated reliably using the Chandra data and what limitations and caveats should be considered in their use. We will discuss the source detection algorithm used for the CSC and the effects of the background images on the detection results. We will also touch on some the Catalog Inclusion and Quality Assurance criteria applied to the source detection results. This work is supported by NASA contract NAS8-03060 (CXC).

Effect of Low Level Cadmium Exposure on Superoxide Dismutase ...

African Journals Online (AJOL)

Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, 300001 Nigeria. ... Cell and Tissue Culture Research Laboratory (Drug Discovery Unit), ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ... therefore, is to protect the biological integrity of.

Effect of specific exercise-based football injury prevention programmes on the overall injury rate in football

DEFF Research Database (Denmark)

Thorborg, Kristian; Krommes, Kasper Kühn; Esteve, Ernest

2017-01-01

Objective To investigate the effect of FIFA injury prevention programmes in football (FIFA 11 and FIFA 11+). Design Systematic review and meta-analysis. Eligibility criteria for selecting studies Randomised controlled trials comparing the FIFA injury prevention programmes with a control (no or sham...... intervention) among football players. Data sources MEDLINE via PubMed, EMBASE via OVID, CINAHL via Ebsco, Web of Science, SportDiscus and Cochrane Central Register of Controlled Trials, from 2004 to 14 March 2016. Results 6 cluster-randomised controlled trials had assessed the effect of FIFA injury prevention...... programmes compared with controls on the overall football injury incidence in recreational/subelite football. These studies included 2 specific exercise-based injury prevention programmes: FIFA 11 (2 studies) and FIFA 11+ (4 studies). The primary analysis showed a reduction in the overall injury risk ratio...

Polarized source upgrading

International Nuclear Information System (INIS)

Clegg, T.B.; Rummel, R.L.; Carter, E.P.; Westerfeldt, C.R.; Lovette, A.W.; Edwards, S.E.

1985-01-01

The decision was made this past year to move the Lamb-shift polarized ion source which was first installed in the laboratory in 1970. The motivation was the need to improve the flexibility of spin-axis orientation by installing the ion source with a new Wien-filter spin precessor which is capable of rotating physically about the beam axis. The move of the polarized source was accomplished in approximately two months, with the accelerator being turned off for experiments during approximately four weeks of this time. The occasion of the move provided the opportunity to rewire completely the entire polarized ion source frame and to rebuild approximately half of the electronic chassis on the source. The result is an ion source which is now logically wired and carefully documented. Beams obtained from the source are much more stable than those previously available

ACCESS AND USE OF HEALTH SERVICES BY GYPSY POPULATION: A SYSTEMATIC REVIEW

Directory of Open Access Journals (Sweden)

Ana Cláudia Conceição da Silva

2016-06-01

Full Text Available Study aimed to characterize the studies on access and use of health services by the Roma population. A systematic review was performed by searching for articles from databases OvidSP/Medline, ProQuest, Web of Science and LILACS, between 2003 and 2013. Initially, 115 citations were selected: (51 Medline, (17 ProQuest, ( 47 Web of Science, (0 Lilacs. After thorough reading, 10 articles were selected which were related to access and health of Roma population. Many studies seemed to meet inclusion criteria by reading the title and abstract, but after thorough reading they did not meet the requirements. All are in English idiom. Most of the UK in the period of 2012-1013, quantitative studies. They presented varied methods, without methodological rigor and detail, with unrepresentative samples and little comparability findings.

Polarized electron sources

International Nuclear Information System (INIS)

Clendenin, J.E.

1995-05-01

Polarized electron sources for high energy accelerators took a significant step forward with the introduction of a new laser-driven photocathode source for the SLC in 1992. With an electron beam polarization of >80% and with ∼99% uptime during continuous operation, this source is a key factor in the success of the current SLC high-energy physics program. The SLC source performance is used to illustrate both the capabilities and the limitations of solid-state sources. The beam requirements for future colliders are similar to that of the SLC with the addition in most cases of multiple-bunch operation. A design for the next generation accelerator source that can improve the operational characteristics and at least minimize some of the inherent limitations of present sources is presented. Finally, the possibilities for producing highly polarized electron beams for high-duty-factor accelerators are discussed

Pacemakers lower sources

International Nuclear Information System (INIS)

Greatbatch, W.

1984-01-01

Energy sources for cardiac facing are considered including radioisotope sources, in a broad conceptual and historical framework.The main guidelines for future development of energy sources are assessed

Formulation and Evaluation of Glutaraldehyde-Crosslinked Chitosan ...

African Journals Online (AJOL)

HP

SciSearch), Scopus, International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus,. EBSCO, African Index ... diclofenac sodium and as a long acting biodegradable delivery vehicle .... February 2013;12 (1): 22. Table 1: Formulation and physical properties of ibuprofen-loaded chitosan microparticles.

Hand in Hand - SEI Programmes for Students

DEFF Research Database (Denmark)

Marušić, Iris; Jogovic, Ivana; Puzic, Sasa

2017-01-01

international databases, such as EBSCO, APA, Academic Search Premier: social-emotional competencies, social and emotional learning, intercultural competence etc. b.Only papers focused on programmes aimed at developing SEI competence in students were included The international catalogue consists of the following...

Global Sourcing Flexibility

DEFF Research Database (Denmark)

Ørberg Jensen, Peter D.; Petersen, Bent

2013-01-01

the higher costs (but decreased risk for value chain disruption) embedded in a more flexible global sourcing model that allows the firm to replicate and/or relocate activities across multiple locations. We develop a model and propositions on facilitating and constraining conditions of global sourcing...... sourcing flexibility. Here we draw on prior research in the fields of organizational flexibility, international business and global sourcing as well as case examples and secondary studies. In the second part of the paper, we discuss the implications of global sourcing flexibility for firm strategy...... and operations against the backdrop of the theory-based definition of the construct. We discuss in particular the importance of global sourcing flexibility for operational performance stability, and the trade-off between specialization benefits, emerging from location and service provider specialization, versus...

Source splitting via the point source method

International Nuclear Information System (INIS)

Potthast, Roland; Fazi, Filippo M; Nelson, Philip A

2010-01-01

We introduce a new algorithm for source identification and field splitting based on the point source method (Potthast 1998 A point-source method for inverse acoustic and electromagnetic obstacle scattering problems IMA J. Appl. Math. 61 119–40, Potthast R 1996 A fast new method to solve inverse scattering problems Inverse Problems 12 731–42). The task is to separate the sound fields u j , j = 1, ..., n of n element of N sound sources supported in different bounded domains G 1 , ..., G n in R 3 from measurements of the field on some microphone array—mathematically speaking from the knowledge of the sum of the fields u = u 1 + ... + u n on some open subset Λ of a plane. The main idea of the scheme is to calculate filter functions g 1 ,…, g n , n element of N, to construct u l for l = 1, ..., n from u| Λ in the form u l (x) = ∫ Λ g l,x (y)u(y)ds(y), l=1,... n. (1) We will provide the complete mathematical theory for the field splitting via the point source method. In particular, we describe uniqueness, solvability of the problem and convergence and stability of the algorithm. In the second part we describe the practical realization of the splitting for real data measurements carried out at the Institute for Sound and Vibration Research at Southampton, UK. A practical demonstration of the original recording and the splitting results for real data is available online

Constraints on equivalent elastic source models from near-source data

International Nuclear Information System (INIS)

Stump, B.

1993-01-01

A phenomenological based seismic source model is important in quantifying the important physical processes that affect the observed seismic radiation in the linear-elastic regime. Representations such as these were used to assess yield effects on seismic waves under a Threshold Test Ban Treaty and to help transport seismic coupling experience at one test site to another. These same characterizations in a non-proliferation environment find applications in understanding the generation of the different types of body and surface waves from nuclear explosions, single chemical explosions, arrays of chemical explosions used in mining, rock bursts and earthquakes. Seismologists typically begin with an equivalent elastic representation of the source which when convolved with the propagation path effects produces a seismogram. The Representation Theorem replaces the true source with an equivalent set of body forces, boundary conditions or initial conditions. An extension of this representation shows the equivalence of the body forces, boundary conditions and initial conditions and replaces the source with a set of force moments, the first degree moment tensor for a point source representation. The difficulty with this formulation, which can completely describe the observed waveforms when the propagation path effects are known, is in the physical interpretation of the actual physical processes acting in the source volume. Observational data from within the source region, where processes are often nonlinear, linked to numerical models of the important physical processes in this region are critical to a unique physical understanding of the equivalent elastic source function

Development, initial content validation and reliability of Nigerian ...

African Journals Online (AJOL)

Prevention strategies are effective only when there are epidemiological data for the targeted populations. The collection of such .... Proquest, Sport discuss and Cochrane as these are ... 0.74, test retest reliability 0.70; Diet: internal consistency:.

ERP correlates of source memory: unitized source information increases familiarity-based retrieval.

Science.gov (United States)

Diana, Rachel A; Van den Boom, Wijnand; Yonelinas, Andrew P; Ranganath, Charan

2011-01-07

Source memory tests typically require subjects to make decisions about the context in which an item was encoded and are thought to depend on recollection of details from the study episode. Although it is generally believed that familiarity does not contribute to source memory, recent behavioral studies have suggested that familiarity may also support source recognition when item and source information are integrated, or "unitized," during study (Diana, Yonelinas, and Ranganath, 2008). However, an alternative explanation of these behavioral findings is that unitization affects the manner in which recollection contributes to performance, rather than increasing familiarity-based source memory. To discriminate between these possibilities, we conducted an event-related potential (ERP) study testing the hypothesis that unitization increases the contribution of familiarity to source recognition. Participants studied associations between words and background colors using tasks that either encouraged or discouraged unitization. ERPs were recorded during a source memory test for background color. The results revealed two distinct neural correlates of source recognition: a frontally distributed positivity that was associated with familiarity-based source memory in the high-unitization condition only and a parietally distributed positivity that was associated with recollection-based source memory in both the high- and low-unitization conditions. The ERP and behavioral findings provide converging evidence for the idea that familiarity can contribute to source recognition, particularly when source information is encoded as an item detail. Copyright © 2010 Elsevier B.V. All rights reserved.

RF H-minus ion source development in China spallation neutron source

Science.gov (United States)

Chen, W.; Ouyang, H.; Xiao, Y.; Liu, S.; Lü, Y.; Cao, X.; Huang, T.; Xue, K.

2017-08-01

China Spallation Neutron Source (CSNS) phase-I project currently uses a Penning surface plasma H- ion source, which has a life time of several weeks with occasional sparks between high voltage electrodes. To extend the life time of the ion source and prepare for the CSNS phase-II, we are trying to develop a RF negative hydrogen ion source with external antenna. The configuration of the source is similar to the DESY external antenna ion source and SNS ion source. However several changes are made to improve the stability and the life time. Firstly, Si3N4 ceramic with high thermal shock resistance, and high thermal conductivity is used for plasma chamber, which can endure an average power of 2000W. Secondly, the water-cooled antenna is brazed on the chamber to improve the energy efficiency. Thirdly, cesium is injected directly to the plasma chamber if necessary, to simplify the design of the converter and the extraction. Area of stainless steel exposed to plasma is minimized to reduce the sputtering and degassing. Instead Mo, Ta, and Pt coated materials are used to face the plasma, which makes the self-cleaning of the source possible.

Sealed radioactive source management

International Nuclear Information System (INIS)

2005-01-01

Sealed radioactive sources have been used in a wide range of application in medicine, agriculture, geology, industry and other fields. Since its utilization many sources have become out of use and became waste but no proper management. This has lead to many accidents causing deaths and serious radiation injuries worldwide. Spent sources application is expanding but their management has seen little improvements. Sealed radioactive sources have become a security risk calling for prompt action. Source management helps to maintain sources in a good physical status and provide means of source tracking and control. It also provides a well documented process of the sources making any future management options safe, secure and cost effective. Last but not least good source management substantially reduces the risk of accidents and eliminates the risk of malicious use. The International Atomic Energy Agency assists Member States to build the infrastructure to properly manage sealed radioactive sources. The assistance includes training of national experts to handle, condition and properly store the sources. For Member States that do not have proper facilities, we provide the technical assistance to design a proper facility to properly manage the radioactive sources and provide for their proper storage. For Member States that need to condition their sources properly but don't have the required infrastructure we provide direct assistance to physically help them with source recovery and provide an international expert team to properly condition their sources and render them safe and secure. We offer software (Radioactive Waste Management Registry) to properly keep a complete record on the sources and provide for efficient tracking. This also helps with proper planning and decision making for long term management

A Hybrid, Current-Source/Voltage-Source Power Inverter Circuit

DEFF Research Database (Denmark)

Trzynadlowski, Andrzej M.; Patriciu, Niculina; Blaabjerg, Frede

2001-01-01

A combination of a large current-source inverter and a small voltage-source inverter circuits is analyzed. The resultant hybrid inverter inherits certain operating advantages from both the constituent converters. In comparison with the popular voltage-source inverter, these advantages include...... reduced switching losses, improved quality of output current waveforms, and faster dynamic response to current control commands. Description of operating principles and characteristics of the hybrid inverter is illustrated with results of experimental investigation of a laboratory model....

THE CHANDRA SOURCE CATALOG

International Nuclear Information System (INIS)

Evans, Ian N.; Primini, Francis A.; Glotfelty, Kenny J.; Anderson, Craig S.; Bonaventura, Nina R.; Chen, Judy C.; Doe, Stephen M.; Evans, Janet D.; Fabbiano, Giuseppina; Galle, Elizabeth C.; Gibbs, Danny G.; Grier, John D.; Hain, Roger M.; Harbo, Peter N.; He Xiangqun; Karovska, Margarita; Kashyap, Vinay L.; Davis, John E.; Houck, John C.; Hall, Diane M.

2010-01-01

The Chandra Source Catalog (CSC) is a general purpose virtual X-ray astrophysics facility that provides access to a carefully selected set of generally useful quantities for individual X-ray sources, and is designed to satisfy the needs of a broad-based group of scientists, including those who may be less familiar with astronomical data analysis in the X-ray regime. The first release of the CSC includes information about 94,676 distinct X-ray sources detected in a subset of public Advanced CCD Imaging Spectrometer imaging observations from roughly the first eight years of the Chandra mission. This release of the catalog includes point and compact sources with observed spatial extents ∼<30''. The catalog (1) provides access to the best estimates of the X-ray source properties for detected sources, with good scientific fidelity, and directly supports scientific analysis using the individual source data; (2) facilitates analysis of a wide range of statistical properties for classes of X-ray sources; and (3) provides efficient access to calibrated observational data and ancillary data products for individual X-ray sources, so that users can perform detailed further analysis using existing tools. The catalog includes real X-ray sources detected with flux estimates that are at least 3 times their estimated 1σ uncertainties in at least one energy band, while maintaining the number of spurious sources at a level of ∼<1 false source per field for a 100 ks observation. For each detected source, the CSC provides commonly tabulated quantities, including source position, extent, multi-band fluxes, hardness ratios, and variability statistics, derived from the observations in which the source is detected. In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively, including source images, event lists, light curves, and spectra from each observation in which a

The Chandra Source Catalog

Science.gov (United States)

Evans, Ian N.; Primini, Francis A.; Glotfelty, Kenny J.; Anderson, Craig S.; Bonaventura, Nina R.; Chen, Judy C.; Davis, John E.; Doe, Stephen M.; Evans, Janet D.; Fabbiano, Giuseppina; Galle, Elizabeth C.; Gibbs, Danny G., II; Grier, John D.; Hain, Roger M.; Hall, Diane M.; Harbo, Peter N.; He, Xiangqun Helen; Houck, John C.; Karovska, Margarita; Kashyap, Vinay L.; Lauer, Jennifer; McCollough, Michael L.; McDowell, Jonathan C.; Miller, Joseph B.; Mitschang, Arik W.; Morgan, Douglas L.; Mossman, Amy E.; Nichols, Joy S.; Nowak, Michael A.; Plummer, David A.; Refsdal, Brian L.; Rots, Arnold H.; Siemiginowska, Aneta; Sundheim, Beth A.; Tibbetts, Michael S.; Van Stone, David W.; Winkelman, Sherry L.; Zografou, Panagoula

2010-07-01

The Chandra Source Catalog (CSC) is a general purpose virtual X-ray astrophysics facility that provides access to a carefully selected set of generally useful quantities for individual X-ray sources, and is designed to satisfy the needs of a broad-based group of scientists, including those who may be less familiar with astronomical data analysis in the X-ray regime. The first release of the CSC includes information about 94,676 distinct X-ray sources detected in a subset of public Advanced CCD Imaging Spectrometer imaging observations from roughly the first eight years of the Chandra mission. This release of the catalog includes point and compact sources with observed spatial extents lsim30''. The catalog (1) provides access to the best estimates of the X-ray source properties for detected sources, with good scientific fidelity, and directly supports scientific analysis using the individual source data; (2) facilitates analysis of a wide range of statistical properties for classes of X-ray sources; and (3) provides efficient access to calibrated observational data and ancillary data products for individual X-ray sources, so that users can perform detailed further analysis using existing tools. The catalog includes real X-ray sources detected with flux estimates that are at least 3 times their estimated 1σ uncertainties in at least one energy band, while maintaining the number of spurious sources at a level of lsim1 false source per field for a 100 ks observation. For each detected source, the CSC provides commonly tabulated quantities, including source position, extent, multi-band fluxes, hardness ratios, and variability statistics, derived from the observations in which the source is detected. In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively, including source images, event lists, light curves, and spectra from each observation in which a

Uudiseid ja meeldetuletusi raamatukogult / Karin Tulve

Index Scriptorium Estoniae

Tulve, Karin

2000-01-01

2000. aastast on TPÜ raamatukokku ostetud EBSCO online andmebaasid, augustist on võimalik kasutada referaat- ja täistekstandmebaasi Academic Search FullText International 15 CD-ROM-il ja septembrist humanitaarteaduste bibliograafilist andmebaasi Sophia : European Databases in the Humanities CD-ROM-il

mySearch changed my life – a resource discovery journey

OpenAIRE

Crowley, Emma J.

2013-01-01

mySearch: the federated years mySearch: choosing a new platform mySearch: EBSCO Discovery Service (EDS) Implementing a new system Technical challenges Has resource discovery enhanced experiences at BU? Ongoing challenges Implications for library management systems Implications for information literacy Questions

Adolescents' Perspectives on the Barriers and Facilitators of Physical Activity: A Systematic Review of Qualitative Studies

Science.gov (United States)

Martins, João; Marques, Adilson; Sarmento, Hugo; Carreiro da Costa, Francisco

2015-01-01

This article examined qualitative studies of adolescents' perspectives about the facilitators and barriers of physical activity, published from 2007 to 2014. A systematic review of "Web of Science", "EBSCO", "Psychinfo" and "ERIC" databases was performed according to Preferred Reporting Items for Systematic…

Psychosocial Assessment as a Standard of Care in Pediatric Cancer

NARCIS (Netherlands)

Kazak, Anne E.; Abrams, Annah N.; Banks, Jaime; Christofferson, Jennifer; DiDonato, Stephen; Grootenhuis, Martha A.; Kabour, Marianne; Madan-Swain, Avi; Patel, Sunita K.; Zadeh, Sima; Kupst, Mary Jo

2015-01-01

This paper presents the evidence for a standard of care for psychosocial assessment in pediatric cancer. An interdisciplinary group of investigators utilized EBSCO, PubMed, PsycINFO, Ovid, and Google Scholar search databases, focusing on five areas: youth/family psychosocial adjustment, family

Induction of protective immune responses in mice by double DNA ...

African Journals Online (AJOL)

Keywords: Multiple DNA vaccine, Omp31 gene, Brucella melitensis, Eae gene, Escherichia ... Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African .... a 1 % agarose gel in 1× TBE buffer, followed by ... manufacturer's protocol, the recombinant ..... Moreno S, Timon M. DNA vaccination: an immunological.

New source review for stationary sources of air pollution

National Research Council Canada - National Science Library

Committee on Changes in New Source Review Programs for Stationary Sources of Air Pollution, National Research Council

2006-01-01

The Clean Air Act established a pair of programsâ€"known as New Source Review (NSR)â€"that regulate large stationary sources of air pollution, such as factories and electricity-generating facilities...

Miniature neutron sources: Thermal neutron sources and their users in the academic field

International Nuclear Information System (INIS)

Egelstaff, P.A.

1992-01-01

The three levels of thermal neutron sources are introduced - University laboratory sources infrastructure sources and world-class sources - and the needs for each kind and their inter-dependence will be emphasized. A description of the possibilities for University sources based on α-Be reactions or spontaneous fission emission is given, and current experience with them is described. A new generation of infrastructure sources is needed to continue the regional programs based on small reactors. Some possibilities for accelerator sources that could meet this need are considered

Negative ion sources

International Nuclear Information System (INIS)

Ishikawa, Junzo; Takagi, Toshinori

1983-01-01

Negative ion sources have been originally developed at the request of tandem electrostatic accelerators, and hundreds of nA to several μA negative ion current has been obtained so far for various elements. Recently, the development of large current hydrogen negative ion sources has been demanded from the standpoint of the heating by neutral particle beam injection in nuclear fusion reactors. On the other hand, the physical properties of negative ions are interesting in the thin film formation using ions. Anyway, it is the present status that the mechanism of negative ion action has not been so fully investigated as positive ions because the history of negative ion sources is short. In this report, the many mechanisms about the generation of negative ions proposed so far are described about negative ion generating mechanism, negative ion source plasma, and negative ion generation on metal surfaces. As a result, negative ion sources are roughly divided into two schemes, plasma extraction and secondary ion extraction, and the former is further classified into the PIG ion source and its variation and Duoplasmatron and its variation; while the latter into reflecting and sputtering types. In the second half of the report, the practical negative ion sources of each scheme are described. If the mechanism of negative ion generation will be investigated more in detail and the development will be continued under the unified know-how as negative ion sources in future, the development of negative ion sources with which large current can be obtained for any element is expected. (Wakatsuki, Y.)

Performance analyses of Z-source and quasi Z-source inverter for photovoltaic applications

Science.gov (United States)

Himabind, S.; Priya, T. Hari; Manjeera, Ch.

2018-04-01

This paper presents the comparative analysis of Z-source and Quasi Z-source converter for renewable energy applications. Due to the dependency of renewable energy sources on external weather conditions the output voltage, current changes accordingly which effects the performance of traditional voltage source and current source inverters connected across it. To overcome the drawbacks of VSI and CSI, Z-source and Quasi Z-source inverter (QZSI) are used, which can perform multiple tasks like ac-to-dc, dc-to-ac, ac-to-ac, dc-to-dc conversion. They can be used for both buck and boost operations, by utilizing the shoot-through zero state. The QZSI is derived from the ZSI topology, with a slight change in the impedance network and it overcomes the drawbacks of ZSI. The QZSI draws a constant current from the source when compared to ZSI. A comparative analysis is performed between Z-source and Quasi Z-source inverter, simulation is performed in MATLAB/Simulink environment.

Orphan sources in Slovenia

International Nuclear Information System (INIS)

Janzekovic, H.; Cesarek, J.

2005-01-01

For decades the international standards and requirements postulate severe control over all lifecycle phases of radioactive sources in order to prevent risks associated with exposure of people and the environment. Despite this fact the orphan sources became a serious problem as a consequence of enlargement of economic transactions in many countries in Europe as well as in the world. The countries as well as international organisations, aware of this emerging problem, are trying to gain control over orphan sources using different approaches. These approaches include control over sources before they could become orphan sources. In addition, countries are also developing action plans in case that an orphan source could be found. The problems related to orphan sources in Slovenia is discussed based on the case studies from the last years. While in the nineties of the last century just a few cases of orphan sources were identified their number has increased substantially since 2003. The paper discusses the general reasons for the phenomena of orphan sources as well as the experience related to regaining control over orphan sources. (author)

Readability of patient education materials available at the point of care.

Science.gov (United States)

Stossel, Lauren M; Segar, Nora; Gliatto, Peter; Fallar, Robert; Karani, Reena

2012-09-01

Many patient education materials (PEMs) available on the internet are written at high school or college reading levels, rendering them inaccessible to the average US resident, who reads at or below an 8(th) grade level. Currently, electronic health record (EHR) providers partner with companies that produce PEMs, allowing clinicians to access PEMs at the point of care. To assess the readability of PEMs provided by a popular EHR vendor as well as the National Library of Medicine (NLM). We included PEMs from Micromedex, EBSCO, and MedlinePlus. Micromedex and EBSCO supply PEMs to Meditech, a popular EHR supplier in the US. MedlinePlus supplies the NLM. These PEM databases have high market penetration and accessibility. Grade reading level of the PEMs was calculated using three validated indices: Simple Measure of Gobbledygook (SMOG), Gunning Fog (GFI), and Flesch-Kincaid (FKI). The percentage of documents above target readability and average readability scores from each database were calculated. We randomly sampled 100 disease-matched PEMs from three databases (n = 300 PEMs). Depending on the readability index used, 30-100% of PEMs were written above the 8(th) grade level. The average reading level for MedlinePlus, EBSCO, and Micromedex PEMs was 10.2 (1.9), 9.7 (1.3), and 8.6 (0.9), respectively (p ≤ 0.000) as estimated by the GFI. Estimates of readability using SMOG and FKI were similar. The majority of PEMS available through the NLM and a popular EHR were written at reading levels considerably higher than that of the average US adult.

CHANDRA ACIS SURVEY OF X-RAY POINT SOURCES: THE SOURCE CATALOG

Energy Technology Data Exchange (ETDEWEB)

Wang, Song; Liu, Jifeng; Qiu, Yanli; Bai, Yu; Yang, Huiqin; Guo, Jincheng; Zhang, Peng, E-mail: jfliu@bao.ac.cn, E-mail: songw@bao.ac.cn [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2016-06-01

The Chandra archival data is a valuable resource for various studies on different X-ray astronomy topics. In this paper, we utilize this wealth of information and present a uniformly processed data set, which can be used to address a wide range of scientific questions. The data analysis procedures are applied to 10,029 Advanced CCD Imaging Spectrometer observations, which produces 363,530 source detections belonging to 217,828 distinct X-ray sources. This number is twice the size of the Chandra Source Catalog (Version 1.1). The catalogs in this paper provide abundant estimates of the detected X-ray source properties, including source positions, counts, colors, fluxes, luminosities, variability statistics, etc. Cross-correlation of these objects with galaxies shows that 17,828 sources are located within the D {sub 25} isophotes of 1110 galaxies, and 7504 sources are located between the D {sub 25} and 2 D {sub 25} isophotes of 910 galaxies. Contamination analysis with the log N –log S relation indicates that 51.3% of objects within 2 D {sub 25} isophotes are truly relevant to galaxies, and the “net” source fraction increases to 58.9%, 67.3%, and 69.1% for sources with luminosities above 10{sup 37}, 10{sup 38}, and 10{sup 39} erg s{sup −1}, respectively. Among the possible scientific uses of this catalog, we discuss the possibility of studying intra-observation variability, inter-observation variability, and supersoft sources (SSSs). About 17,092 detected sources above 10 counts are classified as variable in individual observation with the Kolmogorov–Smirnov (K–S) criterion ( P {sub K–S} < 0.01). There are 99,647 sources observed more than once and 11,843 sources observed 10 times or more, offering us a wealth of data with which to explore the long-term variability. There are 1638 individual objects (∼2350 detections) classified as SSSs. As a quite interesting subclass, detailed studies on X-ray spectra and optical spectroscopic follow-up are needed to

Musicians have better memory than nonmusicians: A meta-analysis.

Science.gov (United States)

Talamini, Francesca; Altoè, Gianmarco; Carretti, Barbara; Grassi, Massimo

2017-01-01

Several studies have found that musicians perform better than nonmusicians in memory tasks, but this is not always the case, and the strength of this apparent advantage is unknown. Here, we conducted a meta-analysis with the aim of clarifying whether musicians perform better than nonmusicians in memory tasks. Education Source; PEP (WEB)-Psychoanalytic Electronic Publishing; Psychology and Behavioral Science (EBSCO); PsycINFO (Ovid); PubMed; ScienceDirect-AllBooks Content (Elsevier API); SCOPUS (Elsevier API); SocINDEX with Full Text (EBSCO) and Google Scholar were searched for eligible studies. The selected studies involved two groups of participants: young adult musicians and nonmusicians. All the studies included memory tasks (loading long-term, short-term or working memory) that contained tonal, verbal or visuospatial stimuli. Three meta-analyses were run separately for long-term memory, short-term memory and working memory. We collected 29 studies, including 53 memory tasks. The results showed that musicians performed better than nonmusicians in terms of long-term memory, g = .29, 95% CI (.08-.51), short-term memory, g = .57, 95% CI (.41-.73), and working memory, g = .56, 95% CI (.33-.80). To further explore the data, we included a moderator (the type of stimulus presented, i.e., tonal, verbal or visuospatial), which was found to influence the effect size for short-term and working memory, but not for long-term memory. In terms of short-term and working memory, the musicians' advantage was large with tonal stimuli, moderate with verbal stimuli, and small or null with visuospatial stimuli. The three meta-analyses revealed a small effect size for long-term memory, and a medium effect size for short-term and working memory, suggesting that musicians perform better than nonmusicians in memory tasks. Moreover, the effect of the moderator suggested that, the type of stimuli influences this advantage.

Source Security Program in the Philippines: a lost source search experience

International Nuclear Information System (INIS)

Romallosa, Kristine M.; Salabit, Maria T.; Caseria, Estrella; Valdezco, Eulinia

2008-01-01

The Philippine Nuclear Research Institute (PNRI), the national agency in the licensing and regulations of radioactive materials in the country, is strengthening its capabilities in the security of radioactive sources. Part of this program is the PNRI's participation in the Regional Security of Radioactive Sources (RSRS) Project of the Australian Nuclear Science and Technology Organization (ANSTO). The project has provided equipment and methods training, assistance in the development of PNRI's own training program and support for actual orphan source search activities. On May 2007, a source search for the two lost Cs-137 level gauges of a steel manufacturing company was conducted by the PNRI and ANSTO. The source search are the: a) Development of instrument and source search training for the team, the National Training Workshop on Orphan Source Searches which was organized and conducted as a result of train-the-trainors fellowship under the RSRS project; and b) Planning and implementation of the lost source search activity. The conduct of the actual search on warehouses, product yard, canals, dust storage, steel making building, scrap yards and nearby junk shops of the steel plant took one week. The week-long search did not find the lost sources. However, naturally occurring radioactive materials identified to be Thorium, were found on sands, bricks and sack piles that are stored and/or generally present in the warehouses, yard and steel making building. The search activity had therefore cleared the facility of the lost source and its corresponding hazards. The NORM found present in the plant's premises on the other hand brought the attention of the management of the needed measures to ensure safety of the staff from possible hazards of these materials. Currently, the course syllabus that was developed is continuously enhanced to accommodate the training needs of the PNRI staff particularly for the emergency response and preparedness. This component of the source

Cold source vessel development for the advanced neutron source

Energy Technology Data Exchange (ETDEWEB)

Williams, P.T.; Lucas, A.T. [Oak Ridge National Lab., TN (United States)

1995-09-01

The Advanced Neutron Source (ANS), in its conceptual design phase at Oak Ridge National Laboratory (ORNL), will be a user-oriented neutron research facility that will produce the most intense flux of neutrons in the world. Among its many scientific applications, the productions of cold neutrons is a significant research mission for the ANS. The cold neutrons come from two independent cold sources positioned near the reactor core. Contained by an aluminum alloy vessel, each cold source is a 410 mm diameter sphere of liquid deuterium that functions both as a neutron moderator and a cryogenic coolant. With nuclear heating of the containment vessel and internal baffling, steady-state operation requires close control of the liquid deuterium flow near the vessel`s inner surface. Preliminary thermal-hydraulic analyses supporting the cold source design are being performed with multi-dimensional computational fluid dynamics simulations of the liquid deuterium flow and heat transfer. This paper presents the starting phase of a challenging program and describes the cold source conceptual design, the thermal-hydraulic feasibility studies of the containment vessel, and the future computational and experimental studies that will be used to verify the final design.

Dual-Source Swept-Source Optical Coherence Tomography Reconstructed on Integrated Spectrum

Directory of Open Access Journals (Sweden)

Shoude Chang

2012-01-01

Full Text Available Dual-source swept-source optical coherence tomography (DS-SSOCT has two individual sources with different central wavelengths, linewidth, and bandwidths. Because of the difference between the two sources, the individually reconstructed tomograms from each source have different aspect ratio, which makes the comparison and integration difficult. We report a method to merge two sets of DS-SSOCT raw data in a common spectrum, on which both data have the same spectrum density and a correct separation. The reconstructed tomographic image can seamlessly integrate the two bands of OCT data together. The final image has higher axial resolution and richer spectroscopic information than any of the individually reconstructed tomography image.

Brighter H- source for the intense pulsed neutron source accelerator system

International Nuclear Information System (INIS)

Stipp, V.; DeWitt, A.; Madsen, J.

1983-01-01

Further increases in the beam intensity of the Intense Pulsed Neutron Source (IPNS) at Argonne National Laboratory required the replacement of the H - source with a higher current source. A magnetron ion source of Fermi National Accelerator Laboratory (FNAL) design was adapted with a grooved cathode to provide a stable 40 to 50 mA of beam operating at 30 Hz for up to a 90 μs pulse duration. Problems of space charge blowup due to the lack of neutralization of the H - beam were solved by injecting additional gs into the 20 keV transport system. The source has recently been installed in the machine and the available input to the accelerator has more than doubled

Sourcing Excellence

DEFF Research Database (Denmark)

Adeyemi, Oluseyi

2011-01-01

Sourcing Excellence is one of the key performance indicators (KPIs) in this world of ever changing sourcing strategies. Manufacturing companies need to access and diagnose the reliability and competencies of existing suppliers in order to coordinate and develop them. This would help in managing...

Distance to the efficiency frontier and foreign direct investment spillovers

Czech Academy of Sciences Publication Activity Database

Sabirianova Peter, K.; Švejnar, Jan; Terrell, K.

2005-01-01

Roč. 3, 2-3 (2005), s. 576-586 ISSN 1542-4766 Institutional research plan: CEZ:AV0Z70850503 Keywords : foreign direct investment * technological frontier Subject RIV: AH - Economics http://ejournals.ebsco.com/direct.asp?ArticleID=4D4281930A8929DFF628

Comparison of the hypothetical (57)Co brachytherapy source with the (192)Ir source.

Science.gov (United States)

Toossi, Mohammad Taghi Bahreyni; Ghorbani, Mahdi; Rostami, Atefeh; Khosroabadi, Mohsen; Khademi, Sara; Knaup, Courtney

2016-01-01

The (57)Co radioisotope has recently been proposed as a hypothetical brachytherapy source due to its high specific activity, appropriate half-life (272 days) and medium energy photons (114.17 keV on average). In this study, Task Group No. 43 dosimetric parameters were calculated and reported for a hypothetical (57)Co source. A hypothetical (57)Co source was simulated in MCNPX, consisting of an active cylinder with 3.5 mm length and 0.6 mm radius encapsulated in a stainless steel capsule. Three photon energies were utilized (136 keV [10.68%], 122 keV [85.60%], 14 keV [9.16%]) for the (57)Co source. Air kerma strength, dose rate constant, radial dose function, anisotropy function, and isodose curves for the source were calculated and compared to the corresponding data for a (192)Ir source. The results are presented as tables and figures. Air kerma strength per 1 mCi activity for the (57)Co source was 0.46 cGyh(-1) cm 2 mCi(-1). The dose rate constant for the (57)Co source was determined to be 1.215 cGyh(-1)U(-1). The radial dose function for the (57)Co source has an increasing trend due to multiple scattering of low energy photons. The anisotropy function for the (57)Co source at various distances from the source is more isotropic than the (192)Ir source. The (57)Co source has advantages over (192)Ir due to its lower energy photons, longer half-life, higher dose rate constant and more isotropic anisotropic function. However, the (192)Ir source has a higher initial air kerma strength and more uniform radial dose function. These properties make (57)Co a suitable source for use in brachytherapy applications.

Open Source Software: critical review of scientific literature and other sources

OpenAIRE

Querol del Amo, Marc

2007-01-01

This thesis presents the results of a survey of Open Source Licensing literature. It aims to assist the reader in choosing the best license for his/her business. For this reason, the content of this thesis can be divided into: (i) an open source licensing overview, (ii) the explication of the main features of the most popular open source licenses, (iii) the consequences of using one or another and (iv) the critical or controversial issues related to Open Source Licensing. Furthermore, at the ...

Research on point source simulating the γ-ray detection efficiencies of stander source

International Nuclear Information System (INIS)

Tian Zining; Jia Mingyan; Shen Maoquan; Yang Xiaoyan; Cheng Zhiwei

2010-01-01

For φ 75 mm x 25 mm sample, the full energy peak efficiencies on different heights of sample radius were obtained using the point sources, and the function parameters about the full energy peak efficiencies of point sources based on radius was fixed. The 59.54 keV γ-ray, 661.66 keV γ-ray, 1173.2 keV γ-ray, 1332.5 keV γ-ray detection efficiencies on different height of samples were obtained, based on the full energy peak efficiencies of point sources and its height, and the function parameters about the full energy peak efficiencies of surface sources based on sample height was fixed. The detection efficiency of (75 mm x 25 mm calibration source can be obtained by integrality, the detection efficiencies simulated by point sources are consistent with the results of stander source in 10%. Therefore, the calibration method of stander source can be substituted by the point source simulation method, and it tis feasible when there is no stander source.) (authors)

Pharmaceutical policies: effects of cap and co-payment on rational use of medicines.

Science.gov (United States)

Luiza, Vera Lucia; Chaves, Luisa A; Silva, Rondineli M; Emmerick, Isabel Cristina M; Chaves, Gabriela C; Fonseca de Araújo, Silvia Cristina; Moraes, Elaine L; Oxman, Andrew D

2015-05-08

Growing expenditures on prescription medicines represent a major challenge to many health systems. Cap and co-payment policies are intended as an incentive to deter unnecessary or marginal utilisation, and to reduce third-party payer expenditures by shifting parts of the financial burden from insurers to patients, thus increasing their financial responsibility for prescription medicines. Direct patient payment policies include caps (maximum numbers of prescriptions or medicines that are reimbursed), fixed co-payments (patients pay a fixed amount per prescription or medicine), co-insurance (patients pay a percentage of the price), ceilings (patients pay the full price or part of the cost up to a ceiling, after which medicines are free or are available at reduced cost) and tier co-payments (differential co-payments usually assigned to generic and brand medicines). This is the first update of the original review. To determine the effects of cap and co-payment (cost-sharing) policies on use of medicines, healthcare utilisation, health outcomes and costs (expenditures). For this update, we searched the following databases and websites: The Cochrane Central Register of Controlled Trials (CENTRAL) (including the Cochrane Effective Practice and Organisation of Care (EPOC) Group Specialised Register, Cochrane Library; MEDLINE, Ovid; EMBASE, Ovid; IPSA, EBSCO; EconLit, ProQuest; Worldwide Political Science Abstracts, ProQuest; PAIS International, ProQuest; INRUD Bibliography; WHOLIS, WHO; LILACS), VHL; Global Health Library WHO; PubMed, NHL; SCOPUS; SciELO, BIREME; OpenGrey; JOLIS Library Network; OECD Library; World Bank e-Library; World Health Organization, WHO; World Bank Documents & Reports; International Clinical Trials Registry Platform (ICTRP), WHO; ClinicalTrials.gov, NIH. We searched all databases during January and February 2013, apart from SciELO, which we searched in January 2012, and ICTRP and ClinicalTrials.gov, which we searched in March 2014. We defined

Review of Sealed Source Designs and Manufacturing Techniques Affecting Disused Source Management

International Nuclear Information System (INIS)

2012-10-01

This publication presents an investigation on the influence of the design and technical features of sealed radioactive sources (SRSs) on predisposal and disposal activities when the sources become disused. The publication also addresses whether design modifications could contribute to safer and/or more efficient management of disused sources without compromising the benefits provided by the use of the sealed sources. This technical publication aims to collect information on the most typical design features and manufacturing techniques of sealed radioactive sources and examines how they affect the safe management of disused sealed radioactive sources (DSRS). The publication also aims to assist source designers and manufacturers by discussing design features that are important from the waste management point of view. It has been identified that most SRS manufacturers use similar geometries and materials for their designs and apply improved and reliable manufacturing techniques e.g. double- encapsulation. These designs and manufacturing techniques have been proven over time to reduce contamination levels in fabrication and handling, and improve source integrity and longevity. The current source designs and materials ensure as well as possible that SRSs will maintain their integrity in use and when they become disused. No significant improvement options to current designs have been identified. However, some design considerations were identified as important to facilitate source retrieval, to increase the possibility of re-use and to ensure minimal contamination risk and radioactive waste generation at recycling. It was also concluded that legible identifying markings on a source are critical for DSRS management. The publication emphasizes the need for a common understanding of the radioactive source's recommended working life (RWL) for manufacturers and regulators. The conditions of use (COU) are important for the determination of RWL. A formal system for specification

Wavelength sweepable laser source

DEFF Research Database (Denmark)

2014-01-01

Wavelength sweepable laser source is disclosed, wherein the laser source is a semiconductor laser source adapted for generating laser light at a lasing wavelength. The laser source comprises a substrate, a first reflector, and a second reflector. The first and second reflector together defines...... and having a rest position, the second reflector and suspension together defining a microelectromechanical MEMS oscillator. The MEMS oscillator has a resonance frequency and is adapted for oscillating the second reflector on either side of the rest position.; The laser source further comprises electrical...... connections adapted for applying an electric field to the MEMS oscillator. Furthermore, a laser source system and a method of use of the laser source are disclosed....

Electron backstream to the source plasma region in an ion source

International Nuclear Information System (INIS)

Ohara, Y.; Akiba, M.; Arakawa, Y.; Okumura, Y.; Sakuraba, J.

1980-01-01

The flux of backstream electrons to the source plasma region increases significantly with the acceleration voltage of an ion beam, so that the back plate in the arc chamber should be broken for quasi-dc operation. The flux of backstream electrons is estimated at the acceleration voltage of 50--100 kV for a proton beam with the aid of ion beam simulation code. The power flux of backstream electrons is up to about 7% of the total beam output at the acceleration voltage of 75 kV. It is pointed out that the conventional ion sources such as the duoPIGatron or the bucket source which use a magnetic field for source plasma production are not suitable for quasi-dc and high-energy ion sources, because the surface heat flux of the back plate is increased by the focusing of backstream electrons and the removal of it is quite difficult. A new ion source which has an electron beam dump in the arc chamber is proposed

Identifying Sources of Scientific Knowledge: classifying non-source items in the WoS

Energy Technology Data Exchange (ETDEWEB)

Calero-Medina, C.M.

2016-07-01

The sources of scientific knowledge can be tracked using the references in scientific publications. For instance, the publications from the scientific journals covered by the Web of Science database (WoS) contain references to publications for which an indexed source record exist in the WoS (source items) or to references for which an indexed source record does not exist in the WoS (non-source items). The classification of the non-source items is the main objective of the work in progress presented here. Some other scholars have classified and identified non-source items with different purposes (e.g. Butler & Visser (2006); Liseé, Larivière & Archambault (2008); Nerderhof, van Leeuwen & van Raan (2010); Hicks & Wang (2013); Boyack & Klavans (2014)). But these studies are focused in specific source types, fields or set of papers. The work presented here is much broader in terms of the number of publications, source types and fields. (Author)

Spallation neutron sources

International Nuclear Information System (INIS)

Fraser, J.S.; Bartholomew, G.A.

1983-01-01

The principles and theory of spallation neutron sources are outlined and a comparison is given with other types of neutron source. A summary of the available accelerator types for spallation neutron sources and their advantages and disadvantages is presented. Suitable target materials are discussed for specific applications, and typical target assemblies shown. (U.K.)

The Chandra Source Catalog: Source Properties and Data Products

Science.gov (United States)

Rots, Arnold; Evans, Ian N.; Glotfelty, Kenny J.; Primini, Francis A.; Zografou, Panagoula; Anderson, Craig S.; Bonaventura, Nina R.; Chen, Judy C.; Davis, John E.; Doe, Stephen M.; Evans, Janet D.; Fabbiano, Giuseppina; Galle, Elizabeth C.; Gibbs, Danny G., II; Grier, John D.; Hain, Roger; Hall, Diane M.; Harbo, Peter N.; He, Xiang Qun (Helen); Houck, John C.; Karovska, Margarita; Kashyap, Vinay L.; Lauer, Jennifer; McCollough, Michael L.; McDowell, Jonathan C.; Miller, Joseph B.; Mitschang, Arik W.; Morgan, Douglas L.; Mossman, Amy E.; Nichols, Joy S.; Nowak, Michael A.; Plummer, David A.; Refsdal, Brian L.; Siemiginowska, Aneta L.; Sundheim, Beth A.; Tibbetts, Michael S.; van Stone, David W.; Winkelman, Sherry L.

2009-09-01

The Chandra Source Catalog (CSC) is breaking new ground in several areas. There are two aspects that are of particular interest to the users: its evolution and its contents. The CSC will be a living catalog that becomes richer, bigger, and better in time while still remembering its state at each point in time. This means that users will be able to take full advantage of new additions to the catalog, while retaining the ability to back-track and return to what was extracted in the past. The CSC sheds the limitations of flat-table catalogs. Its sources will be characterized by a large number of properties, as usual, but each source will also be associated with its own specific data products, allowing users to perform mini custom analysis on the sources. Source properties fall in the spatial (position, extent), photometric (fluxes, count rates), spectral (hardness ratios, standard spectral fits), and temporal (variability probabilities) domains, and are all accompanied by error estimates. Data products cover the same coordinate space and include event lists, images, spectra, and light curves. In addition, the catalog contains data products covering complete observations: event lists, background images, exposure maps, etc. This work is supported by NASA contract NAS8-03060 (CXC).

The relation between tourism and tecnology clusters and its impacts to the local development: a bibliometric study of scientific literature

Directory of Open Access Journals (Sweden)

Cristina Martins

2016-03-01

Full Text Available This paper intends to investigate the scientific literature on the relation between tourism and technology clusters (TourTech in promoting local development on the databases Business Source Complete of the Online Research Databases (EBSCO and Leisure Tourism Database (CABI until the year 2014. With a mixed approach (qualitative and quantitative, the research is classified as descriptive and bibliographic. The strategy adopted for data collection used bibliometric criteria and the data analysis applied was content analysis. The results showed that there are some possible theoretical gaps to be developed: not only about the conection between tourism clusters and technology clusters for local development, but also the relation between tourism and technology clusters and their impact to promote innovation that can improve the local development and finally, how the investments to develop a cluster individually can impact on the development of the other.

Do pollution and climate influence respiratory tract infections in children?

Directory of Open Access Journals (Sweden)

Saulo Duarte Passos

2014-06-01

Full Text Available To review if pollution and climate changes can influence respiratory tract infections in children. Data source: articles published on the subject in PubMed, SciELO, Bireme, EBSCO and UpTodate were reviewed. The following inclusion criteria were considered: scientific papers between 2002 and 2012, study design, the pediatric population, reference documents such as the CETESB and World Health Organization Summary of the data: We analyzed research that correlated respiratory viruses and climate and/or pollution changes. Respiratory syncytial virus has been the virus related most to changes in climate and humidity. Other "old and new" respiratory viruses such as Human Bocavirus, Metapneumovirus, Parechovirus and Parainfuenza would need to be investigated owing to their clinical importance. Although much has been studied with regard to the relationship between climate change and public health, specific studies about its influence on children's health remain scarce.

EPA's Radioactive Source Program

International Nuclear Information System (INIS)

Kopsick, D.

2004-01-01

The US EPA is the lead Federal agency for emergency responses to unknown radiological materials, not licensed, owned or operated by a Federal agency or an Agreement state (Federal Radiological Emergency Response Plan, 1996). The purpose of EPA's clean materials programme is to keep unwanted and unregulated radioactive material out of the public domain. This is achieved by finding and securing lost sources, maintaining control of existing sources and preventing future losses. The focus is on both, domestic and international fronts. The domestic program concentrates on securing lost sources, preventing future losses, alternative technologies like tagging of radioactive sources in commerce, pilot radioactive source roundup, training programs, scrap metal and metal processing facilities, the demolition industry, product stewardship and alternatives to radioactive devices (fewer radioactive source devices means fewer orphan sources). The international program consists of securing lost sources, preventing future losses, radiation monitoring of scrap metal at ports and the international scrap metal monitoring protocol

Determining Studies Conducted upon Individuals with Autism Spectrum Disorder Using High-Tech Devices

Science.gov (United States)

Eliçin, Özge; Kaya, Ali

2017-01-01

This study explores 67 experimental research articles written about children with Autism Spectrum Disorder using high-tech devices. The studies in this research were accessed through EBSCO, Academic Search Complete, ERIC, and Uludag University online search engines using keywords such as "autism and technology", "autism and…

Whitening dentifrice and tooth surface discoloration : a systematic review and meta-analysis

NARCIS (Netherlands)

Soeteman, G.D.; Valkenburg, C.; van der Weijden, G.A.; van Loveren, C.; Bakker, E.W.P.; Slot, D.E.

2018-01-01

Objective: The aim of this systematic review was to assess the effect of a whitening dentifrice (WDF) relative to a regular dentifrice (RDF) on the reduction of natural extrinsic tooth surface discoloration (ETD). Materials and metods: The MEDLINE-PubMed, Cochrane-CENTRAL and EBSCO-Dentistry and

Whitening dentifrice and tooth surface discolorationa systematic review and meta-analysis

NARCIS (Netherlands)

Soeteman, G. D.; Valkenburg, C.; van der Weijden, G. A.; van Loveren, C.; Bakker, Ewp; Slot, D. E.

2018-01-01

ObjectiveThe aim of this systematic review was to assess the effect of a whitening dentifrice (WDF) relative to a regular dentifrice (RDF) on the reduction of natural extrinsic tooth surface discoloration (ETD). Materials and methodsThe MEDLINE-PubMed, Cochrane-CENTRAL and EBSCO-Dentistry and Oral

Adsorptive Cathodic Stripping Voltammetric Determination of ...

African Journals Online (AJOL)

International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African. Index Medicus ... The bioavailable salt forms of ciprofloxacin in the market are ... A standard stock solution of 500 ... CyberScan pH 510 (Eutech Instruments Pte Ltd., .... variation (5%) of the most important variables i.e..

Tamoxifen inhibits astrocytic JAK2/STAT3 pathway in rats with ...

African Journals Online (AJOL)

LDL-C levels was influenced by factors, such as age, BMI, exercise, diet, and smoking habits. In MCC group, the ... International Pharmaceutical Abstract, Chemical Abstracts, Embase, Index Copernicus, EBSCO, African ... for several years in an attempt to resolve this issue. ... a temperature-controlled environment (22 – 25.

Hubble Source Catalog

Science.gov (United States)

Lubow, S.; Budavári, T.

2013-10-01

We have created an initial catalog of objects observed by the WFPC2 and ACS instruments on the Hubble Space Telescope (HST). The catalog is based on observations taken on more than 6000 visits (telescope pointings) of ACS/WFC and more than 25000 visits of WFPC2. The catalog is obtained by cross matching by position in the sky all Hubble Legacy Archive (HLA) Source Extractor source lists for these instruments. The source lists describe properties of source detections within a visit. The calculations are performed on a SQL Server database system. First we collect overlapping images into groups, e.g., Eta Car, and determine nearby (approximately matching) pairs of sources from different images within each group. We then apply a novel algorithm for improving the cross matching of pairs of sources by adjusting the astrometry of the images. Next, we combine pairwise matches into maximal sets of possible multi-source matches. We apply a greedy Bayesian method to split the maximal matches into more reliable matches. We test the accuracy of the matches by comparing the fluxes of the matched sources. The result is a set of information that ties together multiple observations of the same object. A byproduct of the catalog is greatly improved relative astrometry for many of the HST images. We also provide information on nondetections that can be used to determine dropouts. With the catalog, for the first time, one can carry out time domain, multi-wavelength studies across a large set of HST data. The catalog is publicly available. Much more can be done to expand the catalog capabilities.

Pulsed vapor source for use in ion sources for heavy-ion accelerators

International Nuclear Information System (INIS)

Shiloh, J.; Chupp, W.; Faltens, A.; Keefe, D.; Kim, C.; Rosenblum, S.; Tiefenback, M.

1980-01-01

A pulsed cesium vapor source for use in ion sources for high-current heavy-ion accelerators is described. The source employs a vacuum spark in Cs and its properties are measured with a hot-filament Cs detector

Chandra Source Catalog: User Interface

Science.gov (United States)

Bonaventura, Nina; Evans, Ian N.; Rots, Arnold H.; Tibbetts, Michael S.; van Stone, David W.; Zografou, Panagoula; Primini, Francis A.; Glotfelty, Kenny J.; Anderson, Craig S.; Chen, Judy C.; Davis, John E.; Doe, Stephen M.; Evans, Janet D.; Fabbiano, Giuseppina; Galle, Elizabeth C.; Gibbs, Danny G., II; Grier, John D.; Hain, Roger; Hall, Diane M.; Harbo, Peter N.; He, Helen; Houck, John C.; Karovska, Margarita; Kashyap, Vinay L.; Lauer, Jennifer; McCollough, Michael L.; McDowell, Jonathan C.; Miller, Joseph B.; Mitschang, Arik W.; Morgan, Douglas L.; Mossman, Amy E.; Nichols, Joy S.; Nowak, Michael A.; Plummer, David A.; Refsdal, Brian L.; Siemiginowska, Aneta L.; Sundheim, Beth A.; Winkelman, Sherry L.

2009-09-01

The Chandra Source Catalog (CSC) is intended to be the definitive catalog of all X-ray sources detected by Chandra. For each source, the CSC provides positions and multi-band fluxes, as well as derived spatial, spectral, and temporal source properties. Full-field and source region data products are also available, including images, photon event lists, light curves, and spectra. The Chandra X-ray Center CSC website (http://cxc.harvard.edu/csc/) is the place to visit for high-level descriptions of each source property and data product included in the catalog, along with other useful information, such as step-by-step catalog tutorials, answers to FAQs, and a thorough summary of the catalog statistical characterization. Eight categories of detailed catalog documents may be accessed from the navigation bar on most of the 50+ CSC pages; these categories are: About the Catalog, Creating the Catalog, Using the Catalog, Catalog Columns, Column Descriptions, Documents, Conferences, and Useful Links. There are also prominent links to CSCview, the CSC data access GUI, and related help documentation, as well as a tutorial for using the new CSC/Google Earth interface. Catalog source properties are presented in seven scientific categories, within two table views: the Master Source and Source Observations tables. Each X-ray source has one ``master source'' entry and one or more ``source observation'' entries, the details of which are documented on the CSC ``Catalog Columns'' pages. The master source properties represent the best estimates of the properties of a source; these are extensively described on the following pages of the website: Position and Position Errors, Source Flags, Source Extent and Errors, Source Fluxes, Source Significance, Spectral Properties, and Source Variability. The eight tutorials (``threads'') available on the website serve as a collective guide for accessing, understanding, and manipulating the source properties and data products provided by the catalog.

High current ion sources

International Nuclear Information System (INIS)

Brown, I.G.

1989-06-01

The concept of high current ion source is both relative and evolutionary. Within the domain of one particular kind of ion source technology a current of microamperers might be 'high', while in another area a current of 10 Amperes could 'low'. Even within the domain of a single ion source type, what is considered high current performance today is routinely eclipsed by better performance and higher current output within a short period of time. Within their fields of application, there is a large number of kinds of ion sources that can justifiably be called high current. Thus, as a very limited example only, PIGs, Freemen sources, ECR sources, duoplasmatrons, field emission sources, and a great many more all have their high current variants. High current ion beams of gaseous and metallic species can be generated in a number of different ways. Ion sources of the kind developed at various laboratories around the world for the production of intense neutral beams for controlled fusion experiments are used to form large area proton deuteron beams of may tens of Amperes, and this technology can be used for other applications also. There has been significant progress in recent years in the use of microwave ion sources for high current ion beam generation, and this method is likely to find wide application in various different field application. Finally, high current beams of metal ions can be produced using metal vapor vacuum arc ion source technology. After a brief consideration of high current ion source design concepts, these three particular methods are reviewed in this paper

Source Segregation and Collection of Source-Segregated Waste

DEFF Research Database (Denmark)

Christensen, Thomas Højlund; Matsufuji, Y.

2011-01-01

of optimal handling of the waste. But in a few cases, the waste must also be separated at source, for example removing the protective plastic cover from a commercial advertisement received by mail, prior to putting the advertisement into the waste collection bin for recyclable paper. These issues are often...... in wastes segregation addressing: - Purpose of source segregation. - Segregation criteria and guidance. - Segregation potentials and efficiencies. - Systems for collecting segregated fraction....

50 Years of the Macedonian Academy of Sciences and Arts 1967-2017 and 48 Years of Publishing the Journal Prilozi (Contributions) of MASA.

Science.gov (United States)

Polenakovic, Momir; Pop-Jordanova, Nada; Gucev, Zoran

2017-12-01

Papers on medical subjects have been published since the first issue of the journal Prilozi in 1969, totalling a number of of 957 (nine hundred and fifty seven) papers have been published in Prilozi. Two hundred and twenty nine cover subjects on natural sciences and mathematics, and 728 (seven hundred and twenty eight) subjects on medical sciences. So far, 2017 No. XXXVIII-2, 622 (six hundred and twenty two) papers published in Prilozi are in Pubmed. Prilozi is published three times a year and it is covered by the following services: Baidu Scholar, Case, Celdes, CNKI Scholar (China National Knowledge Infrastructure), CNPIEC, DOAJ (Directory of Open Access Journals), EBSCO (relevant databases), EBSCO Discovery Service, Elsevier - SCOPUS, Google Scholar, J-Gate, JournalTOCs, KESLI-NDSL (Korean National Discovery for Science Leaders), Naviga (Softweco), Primo Central (ExLibris), Publons, PubMed, ReadCube, ResearchGate, SCImago (SJR), Summon (Serials Solutions/ProQuest), TDNet, Ulrich's Periodicals Directory/ulrichsweb WanFang Data, WorldCat (OCLC).

Comparison of stress among medical and not medical personnel in health care

Directory of Open Access Journals (Sweden)

Anita Mujakić

2014-09-01

Full Text Available Research Question (RQ: Does the opinion of the medical and non - medical staff varies on (1 the level of stress depending on seniority, (2 the staircase of stress in relation to education, and (3 how motivation affects the level of stress. Purpose: The purpose of the study is to determine whether in health care and higher education contribute to increased job stress. Also, we wanted to know whether they are more motivated workers are less exposed to occupational stress and / or employees with higher seniority also more exposed to stress. Method: We did quantitative research in public health institute. Overview of theoretical principles based on domestic and foreign professional literature. Articles and expert input was obtained in electronic databases ProQuest Online Information Service, Ebsco and SpringerLink. Statistical part of the study, we calculated the statistical program where we used the Mann - Whitney U- statistics and Wilcox W-statistics. Results: The results indicate that there is a statistical difference in understanding the importance of seniority and education on occupational stress among medical and non - medical sector. Employees in the medical sector more statistically argue that education and working life affect the career stress. We rejected our second hypothesis, which says that there is a difference between the two sectors regarding the impact of motivation on occupational stress. Both sectors they consider to be less motivated workers exposed to occupational stress. Organization: The survey can further highlight the risks that may be possible due to congestion and occupational stress. Society: positive influence on the social understanding of diversity obtained service of a single profession and thus routing problem in a disproportionate burden of healthcare workers. Healthcare professionals who work under less stress effectively and positively affect the quality of services rendered. Originality: This kind of research by

ERP correlates of source memory: Unitized source information increases familiarity-based retrieval

OpenAIRE

Diana, Rachel A.; Van den Boom, Wijnand; Yonelinas, Andrew P.; Ranganath, Charan

2010-01-01

Source memory tests typically require subjects to make decisions about the context in which an item was encoded and are thought to depend on recollection of details from the study episode. Although it is generally believed that familiarity does not contribute to source memory, recent behavioral studies have suggested that familiarity may also support source recognition when item and source information are integrated, or “unitized”, during study (Diana, Yonelinas, and Ranganath 2008). However,...

Source signature estimation from multimode surface waves via mode-separated virtual real source method

Science.gov (United States)

Gao, Lingli; Pan, Yudi

2018-05-01

The correct estimation of the seismic source signature is crucial to exploration geophysics. Based on seismic interferometry, the virtual real source (VRS) method provides a model-independent way for source signature estimation. However, when encountering multimode surface waves, which are commonly seen in the shallow seismic survey, strong spurious events appear in seismic interferometric results. These spurious events introduce errors in the virtual-source recordings and reduce the accuracy of the source signature estimated by the VRS method. In order to estimate a correct source signature from multimode surface waves, we propose a mode-separated VRS method. In this method, multimode surface waves are mode separated before seismic interferometry. Virtual-source recordings are then obtained by applying seismic interferometry to each mode individually. Therefore, artefacts caused by cross-mode correlation are excluded in the virtual-source recordings and the estimated source signatures. A synthetic example showed that a correct source signature can be estimated with the proposed method, while strong spurious oscillation occurs in the estimated source signature if we do not apply mode separation first. We also applied the proposed method to a field example, which verified its validity and effectiveness in estimating seismic source signature from shallow seismic shot gathers containing multimode surface waves.

Movement concepts approach in studies on flamenco dancing: A systematic review.

Science.gov (United States)

Forczek, Wanda; Baena-Chicón, Irene; Vargas-Macías, Alfonso

2017-10-01

Flamenco is a highly emotional and demanding dance form. It is important to understand how the dancer's body works in order to improve fitness levels and reduce injuries. Thus, our investigation reviewed studies on kinesiological aspects of flamenco over recent years. The review was restricted to experimental studies. Literature searches were conducted using the following databases: PubMed, Scopus, and Ebsco: SPORTDiscus with Full Text, Medline, Health Source: Nursing/Academic Edition, Health Source - Consumer Edition. After limiting the search, 180 potential articles remained for analysis. A total of 27 papers on different aspects of flamenco dance were finally selected: biomechanics (14), podiatry (6), injury incidence (3), anthropometry (2), and physiology (2). These studies have applied well-established methods from sports studies. However, we noted a number of potential limitations when applied to flamenco. The evidence from this review shows that flamenco dancing demands high levels of effort. Further research is required to understand how the dancer's body works in order to improve fitness levels and reduce injuries. Most of the results presented here are consistent among studies. However, there is a great scarcity of research addressing flamenco movement in a more comprehensive perspective.

Amateur Sources Breaking the News, Meta Sources Authorizing the News of Gaddafi's Death

DEFF Research Database (Denmark)

Mortensen, Mette; Kristensen, Nete Nørgaard

2013-01-01

access to information from war zones, but are instead brought in to comment on, validate and grant legitimacy to amateur sources as a form of explicit source criticism that we would like to term metasourcing. This new pattern of information gathering and sourcing within war reporting manifests itself......This article takes its point of departure in the thesis that today’s global, digitalized and conver- gent media environment has promoted new patterns of information gathering and dissemina- tion within journalism, and war journalism in particular, which involve changing forms and various degrees...... of interplay between elite and non-elite sources as well as media professionals and amateur sources. On account of their proximity to unfolding events, amateur sources often break the news by means of raw and fragmented bits of visual and verbal information. Elite sources rarely possess the same exclusive...

Compact microwave ion source

International Nuclear Information System (INIS)

Leung, K.N.; Walther, S.; Owren, H.W.

1985-05-01

A small microwave ion source has been fabricated from a quartz tube with one end enclosed by a two grid accelerator. The source is also enclosed by a cavity operated at a frequency of 2.45 GHz. Microwave power as high as 500 W can be coupled to the source plasma. The source has been operated with and without multicusp fields for different gases. In the case of hydrogen, ion current density of 200 mA/cm -2 with atomic ion species concentration as high as 80% has been extracted from the source

Characteristics and locations of sources

International Nuclear Information System (INIS)

Lahtinen, J.; Poellaenen, R.; Toivonen, H.

1997-01-01

Ten artificial radiation sources were placed in the terrain in order to test the capability of airborne measuring teams to detect them. One of the sources was a line source, others were point sources (three of them collimated). The radionuclides used in the sources were 60 Co, 137 Cs, 99m Tc and 192 Ir. The source activities ranged from about 26 MBq (one of the cobalt sources) to 0.56 TBq (iridium). (au)

H- radio frequency source development at the Spallation Neutron Source.

Science.gov (United States)

Welton, R F; Dudnikov, V G; Gawne, K R; Han, B X; Murray, S N; Pennisi, T R; Roseberry, R T; Santana, M; Stockli, M P; Turvey, M W

2012-02-01

The Spallation Neutron Source (SNS) now routinely operates nearly 1 MW of beam power on target with a highly persistent ∼38 mA peak current in the linac and an availability of ∼90%. H(-) beam pulses (∼1 ms, 60 Hz) are produced by a Cs-enhanced, multicusp ion source closely coupled with an electrostatic low energy beam transport (LEBT), which focuses the 65 kV beam into a radio frequency quadrupole accelerator. The source plasma is generated by RF excitation (2 MHz, ∼60 kW) of a copper antenna that has been encased with a thickness of ∼0.7 mm of porcelain enamel and immersed into the plasma chamber. The ion source and LEBT normally have a combined availability of ∼99%. Recent increases in duty-factor and RF power have made antenna failures a leading cause of downtime. This report first identifies the physical mechanism of antenna failure from a statistical inspection of ∼75 antennas which ran at the SNS, scanning electron microscopy studies of antenna surface, and cross sectional cuts and analysis of calorimetric heating measurements. Failure mitigation efforts are then described which include modifying the antenna geometry and our acceptance∕installation criteria. Progress and status of the development of the SNS external antenna source, a long-term solution to the internal antenna problem, are then discussed. Currently, this source is capable of delivering comparable beam currents to the baseline source to the SNS and, an earlier version, has briefly demonstrated unanalyzed currents up to ∼100 mA (1 ms, 60 Hz) on the test stand. In particular, this paper discusses plasma ignition (dc and RF plasma guns), antenna reliability, magnet overheating, and insufficient beam persistence.

Digital intelligence sources transporter

International Nuclear Information System (INIS)

Zhang Zhen; Wang Renbo

2011-01-01

It presents from the collection of particle-ray counting, infrared data communication, real-time monitoring and alarming, GPRS and other issues start to realize the digital management of radioactive sources, complete the real-time monitoring of all aspects, include the storing of radioactive sources, transporting and using, framing intelligent radioactive sources transporter, as a result, achieving reliable security supervision of radioactive sources. (authors)

Guidelines for the calibration of low energy photon sources at beta-ray brachytherapy sources

International Nuclear Information System (INIS)

2000-01-01

With the development of improved methods of implanting brachytherapy sources in a precise manner for treating prostate cancer and other disease processes, there has been a tremendous growth in the use of low energy photon sources, such as 125 I and 103 Pd brachytherapy seeds. Low energy photon sources have the advantage of easier shielding and also lowering the dose to normal tissue. However, the dose distributions around these sources are affected by the details in construction of the source and its encapsulation more than other sources used for brachytherapy treatments, such as 192 Ir. With increasing number of new low energy photon sources on the market, care should be taken with regard to its traceability to primary standards. It cannot be assumed that a calibration factor for an ionization chamber that is valid for one type of low energy photon source, automatically is valid for another source even if both would use the same isotope. Moreover, the method used to calculate the dose must also take into account the structure of the source and the encapsulation. The dose calculation algorithm that is valid for one type of low energy source may not be valid for another source even if in both cases the same radionuclide is used. Simple ''point source'' approximations, i.e. where the source is modeled as a point, should be avoided, as such methods do not account for any details in the source construction. In this document, the dose calculation formalism adopted for low energy photon sources is that recommended by the American Association of Physicists in Medicine (AAPM) as outlined by Task Group-43 (TG-43). This method accounts for the source and capsule geometry. The AAPM recommends brachytherapy photon sources to be specified in terms of 'Air Kerma Strength' that is also used in the formalism mentioned above. On the other hand, the International Commission on Radiation Units and Measurements (ICRU) recommends that the specification be done in terms of Reference Air

Point Pollution Sources Dimensioning

Directory of Open Access Journals (Sweden)

Georgeta CUCULEANU

2011-06-01

Full Text Available In this paper a method for determining the main physical characteristics of the point pollution sources is presented. It can be used to find the main physical characteristics of them. The main physical characteristics of these sources are top inside source diameter and physical height. The top inside source diameter is calculated from gas flow-rate. For reckoning the physical height of the source one takes into account the relation given by the proportionality factor, defined as ratio between the plume rise and physical height of the source. The plume rise depends on the gas exit velocity and gas temperature. That relation is necessary for diminishing the environmental pollution when the production capacity of the plant varies, in comparison with the nominal one.

Specification of brachytherapy sources

Energy Technology Data Exchange (ETDEWEB)

1984-10-01

BCRU recommends that the following specification of gamma-ray brachytherapy sources be adopted. Unless otherwise stated, the output of a cylindrical source should be specified in air kerma rate at a point in free space at a distance of 1 m from the source on the radial plane of symmetry, i.e. the plane bisecting the active length and perpendicular to the cylindrical axis of the source. For a wire source the output should be specified for a 1 cm length. For any other construction of source, the point at which the output is specified should be stated. It is also recommended that the units in which the air kerma rate is expressed should be micrograys per hour (..mu..Gy/h).

Managing Non-Standard Force Demands: Risk Implications of the Global Force Management System

Science.gov (United States)

2012-04-26

login?url=http://search.proquest.com/docview/206290543?accountid=12686. 9 James Dunnigan. The World War II Bookshelf . Compendium summarizing multiple...http://www.historynet.com/vietnam-war-the- individual-rotation-policy.htm (accessed February 28, 2012). Dunnigan, James. The World War II Bookshelf

Characteristics and locations of sources

Energy Technology Data Exchange (ETDEWEB)

Lahtinen, J.; Poellaenen, R.; Toivonen, H. [Finnish Centre for Radiation and Nuclear Safety, Helsinki (Finland)

1997-12-31

Ten artificial radiation sources were placed in the terrain in order to test the capability of airborne measuring teams to detect them. One of the sources was a line source, others were point sources (three of them collimated). The radionuclides used in the sources were {sup 60}Co, {sup 137}Cs, {sup 99m}Tc and {sup 192}Ir. The source activities ranged from about 26 MBq (one of the cobalt sources) to 0.56 TBq (iridium). (au).

Characteristics and locations of sources

Energy Technology Data Exchange (ETDEWEB)

Lahtinen, J; Poellaenen, R; Toivonen, H [Finnish Centre for Radiation and Nuclear Safety, Helsinki (Finland)

1998-12-31

Ten artificial radiation sources were placed in the terrain in order to test the capability of airborne measuring teams to detect them. One of the sources was a line source, others were point sources (three of them collimated). The radionuclides used in the sources were {sup 60}Co, {sup 137}Cs, {sup 99m}Tc and {sup 192}Ir. The source activities ranged from about 26 MBq (one of the cobalt sources) to 0.56 TBq (iridium). (au).

Sources of atmospheric acidity

International Nuclear Information System (INIS)

Clarke, A.G.

1992-01-01

The emissions of acid gases from anthropogenic sources and their impact on the environment are the main concern of this book. However, that impact can only be assessed if all the naturally occurring sources of these gases are also known and can be quantified. Given the widely dispersed nature of the natural sources and the problems of measurement of trace species at low concentrations, often in remote regions, the quantification is a very difficult task. Nevertheless, considerable progress has been made over the last decade. In this chapter both man-made and natural sources of atmospheric acidity will be reviewed, but the emphasis will be placed not so much on the global balances as on the scale of the natural sources in relation to the man-made sources. This requires that the very uneven geographical distribution of emissions and the lifetime of individual chemical species be taken into account. The emissions considered are sulphur compounds, nitrogen compounds, chlorine compounds and organic acids. The anthropogenic sources discussed are the combustion of fossil fuels and certain industrial processes. Emissions data for anthropogenic sources are given for the United Kingdom, Europe, USA and globally. A list of 95 references is given. (Author)

Open-Source Colorimeter

OpenAIRE

Anzalone, Gerald C.; Glover, Alexandra G.; Pearce, Joshua M.

2013-01-01

The high cost of what have historically been sophisticated research-related sensors and tools has limited their adoption to a relatively small group of well-funded researchers. This paper provides a methodology for applying an open-source approach to design and development of a colorimeter. A 3-D printable, open-source colorimeter utilizing only open-source hardware and software solutions and readily available discrete components is discussed and its performance compared to a commercial porta...

Source Apportionment of Suspended Sediment Sources using 137Cs and 210Pbxs

Science.gov (United States)

Lamba, J.; Karthikeyan, K.; Thompson, A.

2017-12-01

A study was conducted in the Pleasant Valley Watershed (50 km 2) in South Central Wisconsin to better understand sediment transport processes using sediment fingerprinting technique. Previous studies conducted in this watershed showed that resuspension of fine sediment deposited on the stream bed is an important source of suspended sediment. To better understand the role of fine sediment deposited on the stream bed, fallout radionuclides,137Cs and 210Pbxs were used to determine relative contribution to suspended sediment from in-stream (stream bank and stream bed) and upland sediment sources. Suspended sediment samples were collected during the crop growing season. Potential sources of suspended sediment considered in this study included cropland, pasture and in-stream (stream bed and stream bank). Suspended sediment sources were determined at a subwatershed level. Results of this study showed that in-stream sediment sources are important sources of suspended sediment. Future research should be conducted to better understand the role of legacy sediment in watershed-level sediment transport processes.

Nonpoint source pollution of urban stormwater runoff: a methodology for source analysis.

Science.gov (United States)

Petrucci, Guido; Gromaire, Marie-Christine; Shorshani, Masoud Fallah; Chebbo, Ghassan

2014-09-01

The characterization and control of runoff pollution from nonpoint sources in urban areas are a major issue for the protection of aquatic environments. We propose a methodology to quantify the sources of pollutants in an urban catchment and to analyze the associated uncertainties. After describing the methodology, we illustrate it through an application to the sources of Cu, Pb, Zn, and polycyclic aromatic hydrocarbons (PAH) from a residential catchment (228 ha) in the Paris region. In this application, we suggest several procedures that can be applied for the analysis of other pollutants in different catchments, including an estimation of the total extent of roof accessories (gutters and downspouts, watertight joints and valleys) in a catchment. These accessories result as the major source of Pb and as an important source of Zn in the example catchment, while activity-related sources (traffic, heating) are dominant for Cu (brake pad wear) and PAH (tire wear, atmospheric deposition).

College Students, Shared Decision Making, and the Appropriate Use of Antibiotics for Respiratory Tract Infections: A Systematic Literature Review

Science.gov (United States)

Blyer, Kristina; Hulton, Linda

2016-01-01

Objective: This systematic review examines shared decision making to promote the appropriate use of antibiotics for college students with respiratory tract infections. Participants/Methods: CINAL, Cochrane, PubMed, EBSCO, and PsycNET were searched in October 2014 using the following criteria: English language, human subjects, peer-reviewed, shared…

Thermal neutron source study

International Nuclear Information System (INIS)

Holden, T.M.

1983-05-01

The value of intense neutron beams for condensed matter research is discussed with emphasis on the complementary nature of steady state and pulsed neutron sources. A large body of information on neutron sources, both existing and planned, is then summarized under four major headings: fission reactors, electron accelerators with heavy metal targets, pulsed spallation sources and 'steady state' spallation sources. Although the cost of a spallation source is expected to exceed that of a fission reactor of the same flux by a factor of two, there are significant advantages for a spallation device such as the proposed Electronuclear Materials Test Facility (EMTF)

Spallation neutrons pulsed sources

International Nuclear Information System (INIS)

Carpenter, J.

1996-01-01

This article describes the range of scientific applications which can use these pulsed neutrons sources: Studies on super fluids, measures to verify the crawling model for the polymers diffusion; these sources are also useful to study the neutron disintegration, the ultra cold neutrons. In certain applications which were not accessible by neutrons diffusion, for example, radiations damages, radionuclides production and activation analysis, the spallation sources find their use and their improvement will bring new possibilities. Among others contributions, one must notice the place at disposal of pulsed muons sources and neutrinos sources. (N.C.). 3 figs

Sources for charged particles

International Nuclear Information System (INIS)

Arianer, J.

1997-01-01

This document is a basic course on charged particle sources for post-graduate students and thematic schools on large facilities and accelerator physics. A simple but precise description of the creation and the emission of charged particles is presented. This course relies on every year upgraded reference documents. Following relevant topics are considered: electronic emission processes, technological and practical considerations on electron guns, positron sources, production of neutral atoms, ionization, plasma and discharge, different types of positive and negative ion sources, polarized particle sources, materials for the construction of ion sources, low energy beam production and transport. (N.T.)

Anomaly metrics to differentiate threat sources from benign sources in primary vehicle screening.

Energy Technology Data Exchange (ETDEWEB)

Cohen, Israel Dov; Mengesha, Wondwosen

2011-09-01

Discrimination of benign sources from threat sources at Port of Entries (POE) is of a great importance in efficient screening of cargo and vehicles using Radiation Portal Monitors (RPM). Currently RPM's ability to distinguish these radiological sources is seriously hampered by the energy resolution of the deployed RPMs. As naturally occurring radioactive materials (NORM) are ubiquitous in commerce, false alarms are problematic as they require additional resources in secondary inspection in addition to impacts on commerce. To increase the sensitivity of such detection systems without increasing false alarm rates, alarm metrics need to incorporate the ability to distinguish benign and threat sources. Principal component analysis (PCA) and clustering technique were implemented in the present study. Such techniques were investigated for their potential to lower false alarm rates and/or increase sensitivity to weaker threat sources without loss of specificity. Results of the investigation demonstrated improved sensitivity and specificity in discriminating benign sources from threat sources.

Rf power sources

International Nuclear Information System (INIS)

Allen, M.A.

1988-05-01

This paper covers RF power sources for accelerator applications. The approach has been with particular customers in mind. These customers are high energy physicists who use accelerators as experimental tools in the study of the nucleus of the atom, and synchrotron light sources derived from electron or positron storage rings. This paper is confined to electron-positron linear accelerators since the RF sources have always defined what is possible to achieve with these accelerators. 11 refs., 13 figs

Biogenic Emission Sources

Science.gov (United States)

Biogenic emissions sources come from natural sources and need to accounted for in photochemical grid models. They are computed using a model which utilizes spatial information on vegetation and land use.

10 years and 20,000 sources: the GTRI offsite source recovery project

International Nuclear Information System (INIS)

Whitworth, Julia; Streeper, Charles; Cuthbertson, Abigail

2009-01-01

Full text: The Global Threat Reduction Initiative's (GTRI) Offsite Source Recovery Project (OSRP) has been recovering excess and unwanted radioactive sealed sources for ten years. In January 2009, GTRI announced that the project had recovered 20,000 sealed radioactive sources. This project grew out of early efforts at Los Alamos National Laboratory (LANL) to recover and disposition excess Plutonium-239 ( 239 Pu) sealed sources that were distributed in the 1960s and 1970s under the Atoms for Peace Program. Decades later, these sources began to exceed their design life or fall out of regular use. Sealed source recovery was initially considered a waste management activity, but after the terrorist attacks of 2001, the interagency community began to recognize the threat posed by excess and unwanted radiological materials, particularly those that could not be disposed at the end of their useful life. After being transferred to the U.S. National Nuclear Security Administration (NNSA) to be part of GTRI, OSRP's mission was expanded to include not only material that would be classified as Greater-than-Class-C (GTCC) when it became waste, but also any other materials that might constitute a 'national security consideration'. This paper discusses OSRP's history, recovery operations, expansion to accept high-activity beta-gamma-emitting sealed sources and devices and foreign-possessed sources, and more recent efforts such as involvement in GTRI's Search and Secure project. Current challenges and future work will also be discussed

Quasi-Y-source inverter

DEFF Research Database (Denmark)

Siwakoti, Yam Prasad; Blaabjerg, Frede; Loh, Poh Chiang

2015-01-01

This paper introduces a new inverter topology called a “quasi-Y-source inverter”. The proposed inverter inherits all the advantages of the original Y-source inverter. In addition, the new topology draws continuous current from the source which is required for many renewable sources. It also has dc......-current-blocking capacitors, which avoids saturation in the transformer core. Simulations and experimental results have proved the validity of the proposed inverter....

Open source posturography.

Science.gov (United States)

Rey-Martinez, Jorge; Pérez-Fernández, Nicolás

2016-12-01

The proposed validation goal of 0.9 in intra-class correlation coefficient was reached with the results of this study. With the obtained results we consider that the developed software (RombergLab) is a validated balance assessment software. The reliability of this software is dependent of the used force platform technical specifications. Develop and validate a posturography software and share its source code in open source terms. Prospective non-randomized validation study: 20 consecutive adults underwent two balance assessment tests, six condition posturography was performed using a clinical approved software and force platform and the same conditions were measured using the new developed open source software using a low cost force platform. Intra-class correlation index of the sway area obtained from the center of pressure variations in both devices for the six conditions was the main variable used for validation. Excellent concordance between RombergLab and clinical approved force platform was obtained (intra-class correlation coefficient =0.94). A Bland and Altman graphic concordance plot was also obtained. The source code used to develop RombergLab was published in open source terms.

10 years and 20,000 sources: the offsite source recovery project

Energy Technology Data Exchange (ETDEWEB)

Whitworth, Julia R [Los Alamos National Laboratory; Abeyta, Cristy L [Los Alamos National Laboratory; Pearson, Michael W [Los Alamos National Laboratory

2009-01-01

The Global Threat Reduction Initiative's (GTRI) Offsite Source Recovery Project (OSRP) has been recovering excess and unwanted sealed sources for ten years. In January 2009, GTRI announced that the project had recovered 20,000 sealed radioactive sources. This project grew out of early efforts at Los Alamos National Laboratory (LANL) to recover and disposition excess Plutonium-239 (Pu-239) sealed sources that were distributed in the 1960s and 1970s under the Atoms for Peace Program. Sealed source recovery was initially considered a waste management activity, as evidenced by its initial organization under the Department of Energy's (DOE's) Environmental Management (EM) program. After the terrorist attacks of 2001, however, the interagency community began to recognize the threat posed by excess and unwanted radiological material, particularly those that could not be disposed at the end of their useful life. After being transferred to the National Nuclear Security Administration (NNSA) to be part of GTRI, OSRP's mission was expanded to include not only material that would be classified as Greater-than-Class-C (GTCC) when it became waste, but also any other materials that might be a 'national security consideration.' This paper discusses OSRP's history, recovery operations, expansion to accept high-activity beta-gamma-emitting sealed sources and devices and foreign-possessed sources, and more recent efforts such as cooperative projects with the Council on Radiation Control Program Directors (CRCPD) and involvement in GTRI's Search and Secure project. Current challenges and future work will also be discussed.

Sources of polarized neutrons

International Nuclear Information System (INIS)

Walter, L.

1983-01-01

Various sources of polarized neutrons are reviewed. Monoenergetic source produced with unpolarized or polarized beams, white sources of polarized neutrons, production by transmissions through polarized hydrogen targets and polarized thermal neutronsare discussed, with appropriate applications included. (U.K.)

SOFTWARE OPEN SOURCE, SOFTWARE GRATIS?

Directory of Open Access Journals (Sweden)

Nur Aini Rakhmawati

2006-01-01

Full Text Available Normal 0 false false false IN X-NONE X-NONE MicrosoftInternetExplorer4 Berlakunya Undang – undang Hak Atas Kekayaan Intelektual (HAKI, memunculkan suatu alternatif baru untuk menggunakan software open source. Penggunaan software open source menyebar seiring dengan isu global pada Information Communication Technology (ICT saat ini. Beberapa organisasi dan perusahaan mulai menjadikan software open source sebagai pertimbangan. Banyak konsep mengenai software open source ini. Mulai dari software yang gratis sampai software tidak berlisensi. Tidak sepenuhnya isu software open source benar, untuk itu perlu dikenalkan konsep software open source mulai dari sejarah, lisensi dan bagaimana cara memilih lisensi, serta pertimbangan dalam memilih software open source yang ada. Kata kunci :Lisensi, Open Source, HAKI

Thermal-hydraulic studies of the Advanced Neutron Source cold source

International Nuclear Information System (INIS)

Williams, P.T.; Lucas, A.T.

1995-08-01

The Advanced Neutron Source (ANS), in its conceptual design phase at Oak Ridge National Laboratory, was to be a user-oriented neutron research facility producing the most intense steady-state flux of thermal and cold neutrons in the world. Among its many scientific applications, the production of cold neutrons was a significant research mission for the ANS. The cold neutrons come from two independent cold sources positioned near the reactor core. Contained by an aluminum alloy vessel, each cold source is a 410-mm-diam sphere of liquid deuterium that functions both as a neutron moderator and a cryogenic coolant. With nuclear heating of the containment vessel and internal baffling, steady-state operation requires close control of the liquid deuterium flow near the vessel's inner surface. Preliminary thermal-hydraulic analyses supporting the cold source design were performed with heat conduction simulations of the vessel walls and multidimensional computational fluid dynamics simulations of the liquid deuterium flow and heat transfer. This report presents the starting phase of a challenging program and describes the cold source conceptual design, the thermal-hydraulic feasibility studies of the containment vessel, and the future computational and experimental studies that were planned to verify the final design

Fragments of Nations and Nationalisms: Towards a Typology of the 21st Century Nationalisms

Directory of Open Access Journals (Sweden)

Şahan Savaş KARATAŞLI

2012-01-01

Full Text Available This paper attempts to provide a typology of state-seeking nationalisms of the 21stcentury. We collected data using James Minahan's (2002 Encyclopedia ofStateless Nations and from the major newspaper sources with internationalcoverage using Proquest newspaper database from 2000-2010. Based on thesedata we identified over 300 nations, which demand a state for their own, whichhave a well-defined territory,has a flag of their own and an organization whichdemand independence and/or autonomy. This paper examines 174 of these nationswhich have populations over 1 million. These nations are highly different fromeach other in terms of their level of mobilization level of militancy, organizationalcapacity, demands and grievances. Taking these differences into consideration, weestablished a typology of 21st century state-seeking nationalisms. Our typology,which is inspired by Miroslav Hroch's three phases, is not only descriptive incharacter but also suggests how nationalist movements evolve and transform intime.

A review of measures used in the screening, assessment and diagnosis of dementia in people with an intellectual disability.

Science.gov (United States)

McKenzie, Karen; Metcalfe, Dale; Murray, George

2018-02-09

The increasing number of individuals with an intellectual disability who are at risk of developing dementia highlights the need to use measures with strong psychometric properties as part of the screening, assessment and diagnostic process. Searches were made of clinical and good practice guidelines and English language journal articles sourced from Proquest, Web of Science and Scopus databases (up to July 2017) for tools which were designed or adapted for the purpose of helping to diagnose dementia in people with intellectual disability. Based on a detailed review of 81 articles and guidelines, the present authors identified 22 relevant tools (12 cognitive, 10 behaviour). These were reviewed in terms of their psychometric properties. A number of tools were found to be available for use with people with intellectual disability; however, few were specifically standardized for this purpose which also had comprehensive information about reliability and validity. © 2018 John Wiley & Sons Ltd.

The Need for US Coast Guard Underwater Mission Development

Science.gov (United States)

2013-04-23

Denise Russell, Who Rules the Waves? Piracy, Overfishing and Mining the Ocean (London: Pluto Press, 2010), 1- 5, http://site.ebrary.com/lib...search.proquest.com/docview/918721378?accountid=14746. Russell, Denise. Who Rules the Waves? Piracy, Overfishing and Mining the Ocean. London: Pluto Press

Selecting Full-Text Undergraduate Periodicals Databases.

Science.gov (United States)

Still, Julie M.; Kassabian, Vibiana

1999-01-01

Examines how libraries and librarians can compare full-text general periodical indices, using ProQuest Direct, Periodical Abstracts (via Ovid), and EBSCOhost as examples. Explores breadth and depth of coverage; manipulation of results (email/download/print); ease of use (searching); and indexing quirks. (AEF)

Chandra Source Catalog: User Interfaces

Science.gov (United States)

Bonaventura, Nina; Evans, I. N.; Harbo, P. N.; Rots, A. H.; Tibbetts, M. S.; Van Stone, D. W.; Zografou, P.; Anderson, C. S.; Chen, J. C.; Davis, J. E.; Doe, S. M.; Evans, J. D.; Fabbiano, G.; Galle, E.; Gibbs, D. G.; Glotfelty, K. J.; Grier, J. D.; Hain, R.; Hall, D. M.; He, X.; Houck, J. C.; Karovska, M.; Lauer, J.; McCollough, M. L.; McDowell, J. C.; Miller, J. B.; Mitschang, A. W.; Morgan, D. L.; Nichols, J. S.; Nowak, M. A.; Plummer, D. A.; Primini, F. A.; Refsdal, B. L.; Siemiginowska, A. L.; Sundheim, B. A.; Winkelman, S. L.

2010-03-01

The CSCview data mining interface is available for browsing the Chandra Source Catalog (CSC) and downloading tables of quality-assured source properties and data products. Once the desired source properties and search criteria are entered into the CSCview query form, the resulting source matches are returned in a table along with the values of the requested source properties for each source. (The catalog can be searched on any source property, not just position.) At this point, the table of search results may be saved to a text file, and the available data products for each source may be downloaded. CSCview save files are output in RDB-like and VOTable format. The available CSC data products include event files, spectra, lightcurves, and images, all of which are processed with the CIAO software. CSC data may also be accessed non-interactively with Unix command-line tools such as cURL and Wget, using ADQL 2.0 query syntax. In fact, CSCview features a separate ADQL query form for those who wish to specify this type of query within the GUI. Several interfaces are available for learning if a source is included in the catalog (in addition to CSCview): 1) the CSC interface to Sky in Google Earth shows the footprint of each Chandra observation on the sky, along with the CSC footprint for comparison (CSC source properties are also accessible when a source within a Chandra field-of-view is clicked); 2) the CSC Limiting Sensitivity online tool indicates if a source at an input celestial location was too faint for detection; 3) an IVOA Simple Cone Search interface locates all CSC sources within a specified radius of an R.A. and Dec.; and 4) the CSC-SDSS cross-match service returns the list of sources common to the CSC and SDSS, either all such sources or a subset based on search criteria.

The continued development of the Spallation Neutron Source external antenna H- ion source

International Nuclear Information System (INIS)

Welton, R. F.; Carmichael, J.; Fuga, R.; Goulding, R. H.; Han, B.; Kang, Y.; Lee, S. W.; Murray, S. N.; Pennisi, T.; Potter, K. G.; Santana, M.; Stockli, M. P.; Desai, N. J.

2010-01-01

The U.S. Spallation Neutron Source (SNS) is an accelerator-based, pulsed neutron-scattering facility, currently in the process of ramping up neutron production. In order to ensure that the SNS will meet its operational commitments as well as provide for future facility upgrades with high reliability, we are developing a rf-driven, H - ion source based on a water-cooled, ceramic aluminum nitride (AlN) plasma chamber. To date, early versions of this source have delivered up to 42 mA to the SNS front end and unanalyzed beam currents up to ∼100 mA (60 Hz, 1 ms) to the ion source test stand. This source was operated on the SNS accelerator from February to April 2009 and produced ∼35 mA (beam current required by the ramp up plan) with availability of ∼97%. During this run several ion source failures identified reliability issues, which must be addressed before the source re-enters production: plasma ignition, antenna lifetime, magnet cooling, and cooling jacket integrity. This report discusses these issues, details proposed engineering solutions, and notes progress to date.

Note: Development of ESS Bilbao's proton ion source: Ion Source Hydrogen Positive

International Nuclear Information System (INIS)

Miracoli, R.; Feuchtwanger, J.; Arredondo, I.; Belver, D.; Gonzalez, P. J.; Corres, J.; Djekic, S.; Echevarria, P.; Eguiraun, M.; Garmendia, N.; Muguira, L.

2014-01-01

The Ion Source Hydrogen positive is a 2.7 GHz off-resonance microwave discharge ion source. It uses four coils to generate an axial magnetic field in the plasma chamber around 0.1 T that exceeds the ECR resonance field. A new magnetic system was designed as a combination of the four coils and soft iron in order to increase the reliability of the source. The description of the simulations of the magnetic field and the comparison with the magnetic measurements are presented. Moreover, results of the initial commissioning of the source for extraction voltage until 50 kV will be reported

Gravitation and source theory

International Nuclear Information System (INIS)

Yilmaz, H.

1975-01-01

Schwinger's source theory is applied to the problem of gravitation and its quantization. It is shown that within the framework of a flat-space the source theory implementation leads to a violation of probability. To avoid the difficulty one must introduce a curved space-time hence the source concept may be said to necessitate the transition to a curved-space theory of gravitation. It is further shown that the curved-space theory of gravitation implied by the source theory is not equivalent to the conventional Einstein theory. The source concept leads to a different theory where the gravitational field has a stress-energy tensor t/sup nu//sub mu/ which contributes to geometric curvatures

Preliminaries

Directory of Open Access Journals (Sweden)

Desde el jardín de Freud

2014-10-01

Full Text Available Desde el Jardín de Freud se encuentra indexada en el IBN-Publindex (Colciencias, en categoría C, y en Latindex. También se encuentra en las siguientes bases de datos y catálogos: ebsco, Dialnet, Rebiun, Doaj y e-Revistas.

Global Sourcing of Services

DEFF Research Database (Denmark)

Ørberg Jensen, Peter D.; Petersen, Bent

2013-01-01

The global sourcing of services offers high returns but is also associated with high risks. The extent to which firms engage in ‘transformational’ global sourcing (i.e., global sourcing implying considerable changes in the home organization) chiefly depends on management's comfort zone which...

Crowd Sourcing.

Science.gov (United States)

Baum, Neil

2016-01-01

The Internet has contributed new words and slang to our daily vernacular. A few terms, such as tweeting, texting, sexting, blogging, and googling, have become common in most vocabularies and in many languages, and are now included in the dictionary. A new buzzword making the rounds in industry is crowd sourcing, which involves outsourcing an activity, task, or problem by sending it to people or groups outside a business or a practice. Crowd sourcing allows doctors and practices to tap the wisdom of many instead of relying only on the few members of their close-knit group. This article defines "crowd sourcing," offers examples, and explains how to get started with this approach that can increase your ability to finish a task or solve problems that you don't have the time or expertise to accomplish.

Neutron source

International Nuclear Information System (INIS)

Cason, J.L. Jr.; Shaw, C.B.

1975-01-01

A neutron source which is particularly useful for neutron radiography consists of a vessel containing a moderating media of relatively low moderating ratio, a flux trap including a moderating media of relatively high moderating ratio at the center of the vessel, a shell of depleted uranium dioxide surrounding the moderating media of relatively high moderating ratio, a plurality of guide tubes each containing a movable source of neutrons surrounding the flux trap, a neutron shield surrounding one part of each guide tube, and at least one collimator extending from the flux trap to the exterior of the neutron source. The shell of depleted uranium dioxide has a window provided with depleted uranium dioxide shutters for each collimator. Reflectors are provided above and below the flux trap and on the guide tubes away from the flux trap

A STATISTICAL APPROACH TO RECOGNIZING SOURCE CLASSES FOR UNASSOCIATED SOURCES IN THE FIRST FERMI-LAT CATALOG

Energy Technology Data Exchange (ETDEWEB)

Ackermann, M. [Deutsches Elektronen Synchrotron DESY, D-15738 Zeuthen (Germany); Ajello, M.; Allafort, A.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Buehler, R. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Antolini, E.; Bonamente, E. [Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy); Baldini, L.; Bellazzini, R.; Bregeon, J. [Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy); Ballet, J. [Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d' Astrophysique, CEA Saclay, 91191 Gif sur Yvette (France); Barbiellini, G. [Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy); Bastieri, D. [Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy); Bouvier, A. [Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States); Brandt, T. J. [CNRS, IRAP, F-31028 Toulouse Cedex 4 (France); Brigida, M. [Dipartimento di Fisica ' M. Merlin' dell' Universita e del Politecnico di Bari, I-70126 Bari (Italy); Bruel, P., E-mail: monzani@slac.stanford.edu, E-mail: vilchez@cesr.fr, E-mail: salvetti@lambrate.inaf.it, E-mail: elizabeth.c.ferrara@nasa.gov [Laboratoire Leprince-Ringuet, Ecole polytechnique, CNRS/IN2P3, Palaiseau (France); and others

2012-07-01

The Fermi Large Area Telescope (LAT) First Source Catalog (1FGL) provided spatial, spectral, and temporal properties for a large number of {gamma}-ray sources using a uniform analysis method. After correlating with the most-complete catalogs of source types known to emit {gamma} rays, 630 of these sources are 'unassociated' (i.e., have no obvious counterparts at other wavelengths). Here, we employ two statistical analyses of the primary {gamma}-ray characteristics for these unassociated sources in an effort to correlate their {gamma}-ray properties with the active galactic nucleus (AGN) and pulsar populations in 1FGL. Based on the correlation results, we classify 221 AGN-like and 134 pulsar-like sources in the 1FGL unassociated sources. The results of these source 'classifications' appear to match the expected source distributions, especially at high Galactic latitudes. While useful for planning future multiwavelength follow-up observations, these analyses use limited inputs, and their predictions should not be considered equivalent to 'probable source classes' for these sources. We discuss multiwavelength results and catalog cross-correlations to date, and provide new source associations for 229 Fermi-LAT sources that had no association listed in the 1FGL catalog. By validating the source classifications against these new associations, we find that the new association matches the predicted source class in {approx}80% of the sources.

A STATISTICAL APPROACH TO RECOGNIZING SOURCE CLASSES FOR UNASSOCIATED SOURCES IN THE FIRST FERMI-LAT CATALOG

International Nuclear Information System (INIS)

Ackermann, M.; Ajello, M.; Allafort, A.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Buehler, R.; Antolini, E.; Bonamente, E.; Baldini, L.; Bellazzini, R.; Bregeon, J.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bouvier, A.; Brandt, T. J.; Brigida, M.; Bruel, P.

2012-01-01

The Fermi Large Area Telescope (LAT) First Source Catalog (1FGL) provided spatial, spectral, and temporal properties for a large number of γ-ray sources using a uniform analysis method. After correlating with the most-complete catalogs of source types known to emit γ rays, 630 of these sources are 'unassociated' (i.e., have no obvious counterparts at other wavelengths). Here, we employ two statistical analyses of the primary γ-ray characteristics for these unassociated sources in an effort to correlate their γ-ray properties with the active galactic nucleus (AGN) and pulsar populations in 1FGL. Based on the correlation results, we classify 221 AGN-like and 134 pulsar-like sources in the 1FGL unassociated sources. The results of these source 'classifications' appear to match the expected source distributions, especially at high Galactic latitudes. While useful for planning future multiwavelength follow-up observations, these analyses use limited inputs, and their predictions should not be considered equivalent to 'probable source classes' for these sources. We discuss multiwavelength results and catalog cross-correlations to date, and provide new source associations for 229 Fermi-LAT sources that had no association listed in the 1FGL catalog. By validating the source classifications against these new associations, we find that the new association matches the predicted source class in ∼80% of the sources.

New developments with H-sources

International Nuclear Information System (INIS)

Sherman, Joseph D.; Rouleau, G.

2002-01-01

Existing spallation neutron source upgrades, planned spallation neutron sources, and high-energy accelerators for particle physics place demanding requirements on the Hsources. These requirements ask for increased beam currents and duty factor (df) while generally maintaining state-of-the art H' source emittance. A variety of H sources are being developed to address these challenges. These include volume sources with and without the addition of cesium for enhanced He production, increased df cesiated H' Penning and magnetron sources, and cesiated surface converter H- sources. Research on surface films of tantalum metal for enhanced volume H- production is also being studied. Innovative plasma production techniques to address the longer df requirement without sacrificing H- source reliability and liktime will be reviewed. The physical bases, the goals, and perceived challenges will be discussed.

Cesium glass irradiation sources

International Nuclear Information System (INIS)

Plodinec, M.J.

1982-01-01

The precipitation process for the decontamination of soluble SRP wastes produces a material whose radioactivity is dominated by 137 Cs. Potentially, this material could be vitrified to produce irradiation sources similar to the Hanford CsCl sources. In this report, process steps necessary for the production of cesium glass irradiation sources (CGS), and the nature of the sources produced, are examined. Three options are considered in detail: direct vitrification of precipitation process waste; direct vitrification of this waste after organic destruction; and vitrification of cesium separated from the precipitation process waste. Direct vitrification is compatible with DWPF equipment, but process rates may be limited by high levels of combustible materials in the off-gas. Organic destruction would allow more rapid processing. In both cases, the source produced has a dose rate of 2 x 10 4 rads/hr at the surface. Cesium separation produces a source with a dose rate of 4 x 10 5 at the surface, which is nearer that of the Hanford sources (2 x 10 6 rads/hr). Additional processing steps would be required, as well as R and D to demonstrate that DWPF equipment is compatible with this intensely radioactive material

Fast temperature optimization of multi-source hyperthermia applicators with reduced-order modeling of 'virtual sources'

International Nuclear Information System (INIS)

Cheng, K-S; Stakhursky, Vadim; Craciunescu, Oana I; Stauffer, Paul; Dewhirst, Mark; Das, Shiva K

2008-01-01

The goal of this work is to build the foundation for facilitating real-time magnetic resonance image guided patient treatment for heating systems with a large number of physical sources (e.g. antennas). Achieving this goal requires knowledge of how the temperature distribution will be affected by changing each source individually, which requires time expenditure on the order of the square of the number of sources. To reduce computation time, we propose a model reduction approach that combines a smaller number of predefined source configurations (fewer than the number of actual sources) that are most likely to heat tumor. The source configurations consist of magnitude and phase source excitation values for each actual source and may be computed from a CT scan based plan or a simplified generic model of the corresponding patient anatomy. Each pre-calculated source configuration is considered a 'virtual source'. We assume that the actual best source settings can be represented effectively as weighted combinations of the virtual sources. In the context of optimization, each source configuration is treated equivalently to one physical source. This model reduction approach is tested on a patient upper-leg tumor model (with and without temperature-dependent perfusion), heated using a 140 MHz ten-antenna cylindrical mini-annular phased array. Numerical simulations demonstrate that using only a few pre-defined source configurations can achieve temperature distributions that are comparable to those from full optimizations using all physical sources. The method yields close to optimal temperature distributions when using source configurations determined from a simplified model of the tumor, even when tumor position is erroneously assumed to be ∼2.0 cm away from the actual position as often happens in practical clinical application of pre-treatment planning. The method also appears to be robust under conditions of changing, nonlinear, temperature-dependent perfusion. The

Dosimetry of industrial sources

International Nuclear Information System (INIS)

Vega C, H.R.; Rodriguez J, R.; Manzanares A, E.; Hernandez V, R.; Ramirez G, J.; Rivera M, T.

2007-01-01

The gamma rays are produced during the disintegration of the atomic nuclei, its high energy allows them to cross thick materials. The capacity to attenuate a photons beam allows to determine the density, in line, of industrial interest materials as the mining. By means of two active dosemeters and a TLDs group (passive dosimetry) the dose rates of two sources of Cs-137 used for determining in line the density of mining materials were determined. With the dosemeters the dose levels in diverse points inside the grave that it harbors the sources and by means of calculations the isodoses curves were determined. In the phase of calculations was supposed that both sources were punctual and the isodose curves were calculated for two situations: naked sources and in their Pb packings. The dosimetry was carried out around two sources of 137 Cs. The measured values allowed to develop a calculation procedure to obtain the isodoses curves in the grave where the sources are installed. (Author)

Source-based neurofeedback methods using EEG recordings: training altered brain activity in a functional brain source derived from blind source separation

Science.gov (United States)

White, David J.; Congedo, Marco; Ciorciari, Joseph

2014-01-01

A developing literature explores the use of neurofeedback in the treatment of a range of clinical conditions, particularly ADHD and epilepsy, whilst neurofeedback also provides an experimental tool for studying the functional significance of endogenous brain activity. A critical component of any neurofeedback method is the underlying physiological signal which forms the basis for the feedback. While the past decade has seen the emergence of fMRI-based protocols training spatially confined BOLD activity, traditional neurofeedback has utilized a small number of electrode sites on the scalp. As scalp EEG at a given electrode site reflects a linear mixture of activity from multiple brain sources and artifacts, efforts to successfully acquire some level of control over the signal may be confounded by these extraneous sources. Further, in the event of successful training, these traditional neurofeedback methods are likely influencing multiple brain regions and processes. The present work describes the use of source-based signal processing methods in EEG neurofeedback. The feasibility and potential utility of such methods were explored in an experiment training increased theta oscillatory activity in a source derived from Blind Source Separation (BSS) of EEG data obtained during completion of a complex cognitive task (spatial navigation). Learned increases in theta activity were observed in two of the four participants to complete 20 sessions of neurofeedback targeting this individually defined functional brain source. Source-based EEG neurofeedback methods using BSS may offer important advantages over traditional neurofeedback, by targeting the desired physiological signal in a more functionally and spatially specific manner. Having provided preliminary evidence of the feasibility of these methods, future work may study a range of clinically and experimentally relevant brain processes where individual brain sources may be targeted by source-based EEG neurofeedback. PMID

Consider the source: persuasion of implicit evaluations is moderated by source credibility.

Science.gov (United States)

Smith, Colin Tucker; De Houwer, Jan; Nosek, Brian A

2013-02-01

The long history of persuasion research shows how to change explicit, self-reported evaluations through direct appeals. At the same time, research on how to change implicit evaluations has focused almost entirely on techniques of retraining existing evaluations or manipulating contexts. In five studies, we examined whether direct appeals can change implicit evaluations in the same way as they do explicit evaluations. In five studies, both explicit and implicit evaluations showed greater evidence of persuasion following information presented by a highly credible source than a source low in credibility. Whereas cognitive load did not alter the effect of source credibility on explicit evaluations, source credibility had an effect on the persuasion of implicit evaluations only when participants were encouraged and able to consider information about the source. Our findings reveal the relevance of persuasion research for changing implicit evaluations and provide new ideas about the processes underlying both types of evaluation.

Neutron sources and applications

Energy Technology Data Exchange (ETDEWEB)

Price, D.L. [ed.] [Argonne National Lab., IL (United States); Rush, J.J. [ed.] [National Inst. of Standards and Technology, Gaithersburg, MD (United States)

1994-01-01

Review of Neutron Sources and Applications was held at Oak Brook, Illinois, during September 8--10, 1992. This review involved some 70 national and international experts in different areas of neutron research, sources, and applications. Separate working groups were asked to (1) review the current status of advanced research reactors and spallation sources; and (2) provide an update on scientific, technological, and medical applications, including neutron scattering research in a number of disciplines, isotope production, materials irradiation, and other important uses of neutron sources such as materials analysis and fundamental neutron physics. This report summarizes the findings and conclusions of the different working groups involved in the review, and contains some of the best current expertise on neutron sources and applications.

Neutron sources and applications

International Nuclear Information System (INIS)

Price, D.L.; Rush, J.J.

1994-01-01

Review of Neutron Sources and Applications was held at Oak Brook, Illinois, during September 8--10, 1992. This review involved some 70 national and international experts in different areas of neutron research, sources, and applications. Separate working groups were asked to (1) review the current status of advanced research reactors and spallation sources; and (2) provide an update on scientific, technological, and medical applications, including neutron scattering research in a number of disciplines, isotope production, materials irradiation, and other important uses of neutron sources such as materials analysis and fundamental neutron physics. This report summarizes the findings and conclusions of the different working groups involved in the review, and contains some of the best current expertise on neutron sources and applications

Source inversion in the full-wave tomography; Full wave tomography ni okeru source inversion

Energy Technology Data Exchange (ETDEWEB)

Tsuchiya, T [DIA Consultants Co. Ltd., Tokyo (Japan)

1997-10-22

In order to consider effects of characteristics of a vibration source in the full-wave tomography (FWT), a study has been performed on a method to invert vibration source parameters together with V(p)/V(s) distribution. The study has expanded an analysis method which uses as the basic the gradient method invented by Tarantola and the partial space method invented by Sambridge, and conducted numerical experiments. The experiment No. 1 has performed inversion of only the vibration source parameters, and the experiment No. 2 has executed simultaneous inversion of the V(p)/V(s) distribution and the vibration source parameters. The result of the discussions revealed that and effective analytical procedure would be as follows: in order to predict maximum stress, the average vibration source parameters and the property parameters are first inverted simultaneously; in order to estimate each vibration source parameter at a high accuracy, the property parameters are fixed, and each vibration source parameter is inverted individually; and the derived vibration source parameters are fixed, and the property parameters are again inverted from the initial values. 5 figs., 2 tabs.

GANIL Workshop on Ion Sources

International Nuclear Information System (INIS)

Leroy, Renan

1999-01-01

The proceedings of the GANIL Workshop on Ion Sources held at GANIL - Caen on 18-19 March 1999 contains 13 papers aiming at improving the old source operation and developing new types of sources for nuclear research and studies of ion physics. A number of reports are devoted to applications like surface treatment, ion implantation or fusion injection. The 1+→n+ transformation, charged particle transport in ECR sources, addition of cesium and xenon in negative ion sources and other basic issues in ion sources are also addressed

Characteristics of 6.5 GHz ECR ion source for polarized H- ion source

International Nuclear Information System (INIS)

Ikegami, Kiyoshi; Mori, Yoshiharu; Takagi, Akira; Fukumoto, Sadayoshi.

1983-04-01

A 6.5 GHz ECR (electron cyclotron resonance) ion source has been developed for optically pumped polarized H - ion source at KEK. The properties of this ECR ion source such as beam intensities, proton ratios, plasma electron temperatures and beam emittances were measured. (author)

Intense, broadband, pulsed I-R source at the National Synchrotron Light Source

International Nuclear Information System (INIS)

Williams, G.P.

1984-01-01

We describe a broadband (1 μm to 1 mm) synchrotron radiation infrared source, pulsed each 20 to 180 nseconds and delivering about 10 15 photons/sec/1% bandpass into f10 optics. The source size is diffraction limited. This source is thus 100 to 1000 times brighter than a 2000 0 K black body, very stable and capable of being used for calibration

Open Source Business Solutions

Directory of Open Access Journals (Sweden)

Ion IVAN

2008-01-01

Full Text Available This analyses the Open source movement. Open source development process and management is seen different from the classical point of view. This focuses on characteristics and software market tendencies for the main Open source initiatives. It also points out the labor market future evolution for the software developers.

Investigating Primary Source Literacy

Science.gov (United States)

Archer, Joanne; Hanlon, Ann M.; Levine, Jennie A.

2009-01-01

Primary source research requires students to acquire specialized research skills. This paper presents results from a user study testing the effectiveness of a Web guide designed to convey the concepts behind "primary source literacy". The study also evaluated students' strengths and weaknesses when conducting primary source research. (Contains 3…

H{sup -} radio frequency source development at the Spallation Neutron Source

Energy Technology Data Exchange (ETDEWEB)

Welton, R. F.; Gawne, K. R.; Han, B. X.; Murray, S. N.; Pennisi, T. R.; Roseberry, R. T.; Santana, M.; Stockli, M. P. [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37830-6471 (United States); Dudnikov, V. G. [Muons, Inc., 552 N. Batavia Avenue, Batavia, Illinois 60510 (United States); Turvey, M. W. [Villanova University, 800E. Lancaster Ave, Villanova, Pennsylvania 19085 (United States)

2012-02-15

The Spallation Neutron Source (SNS) now routinely operates nearly 1 MW of beam power on target with a highly persistent {approx}38 mA peak current in the linac and an availability of {approx}90%. H{sup -} beam pulses ({approx}1 ms, 60 Hz) are produced by a Cs-enhanced, multicusp ion source closely coupled with an electrostatic low energy beam transport (LEBT), which focuses the 65 kV beam into a radio frequency quadrupole accelerator. The source plasma is generated by RF excitation (2 MHz, {approx}60 kW) of a copper antenna that has been encased with a thickness of {approx}0.7 mm of porcelain enamel and immersed into the plasma chamber. The ion source and LEBT normally have a combined availability of {approx}99%. Recent increases in duty-factor and RF power have made antenna failures a leading cause of downtime. This report first identifies the physical mechanism of antenna failure from a statistical inspection of {approx}75 antennas which ran at the SNS, scanning electron microscopy studies of antenna surface, and cross sectional cuts and analysis of calorimetric heating measurements. Failure mitigation efforts are then described which include modifying the antenna geometry and our acceptance/installation criteria. Progress and status of the development of the SNS external antenna source, a long-term solution to the internal antenna problem, are then discussed. Currently, this source is capable of delivering comparable beam currents to the baseline source to the SNS and, an earlier version, has briefly demonstrated unanalyzed currents up to {approx}100 mA (1 ms, 60 Hz) on the test stand. In particular, this paper discusses plasma ignition (dc and RF plasma guns), antenna reliability, magnet overheating, and insufficient beam persistence.

Culturally Relevant Palliative and End-of-Life Care for U.S. Indigenous Populations: An Integrative Review.

Science.gov (United States)

Isaacson, Mary J; Lynch, Anna R

2018-03-01

American Indians/Alaska Natives (AIs/ANs) have higher rates of chronic illness and lack access to palliative/end-of-life (EOL) care. This integrative review ascertained the state of the science on culturally acceptable palliative/EOL care options for Indigenous persons in the United States. Databases searched: CINAHL, PubMed/MEDLINE, SocINDEX, PsycINFO, PsycARTICLES, ERIC, Health Source: Nursing/Academic Edition, and EBSCO Discovery Service 1880s-Present. Key terms used: palliative care, EOL care, and AI/AN. peer-reviewed articles published in English. Findings/Results: Twenty-nine articles were identified, 17 remained that described culturally specific palliative/EOL care for AIs/ANs. Synthesis revealed four themes: Communication, Cultural Awareness/Sensitivity, Community Guidance for Palliative/EOL Care Programs, Barriers and two subthemes: Trust/Respect and Mistrust. Limitations are lack of research funding, geographic isolation, and stringent government requirements. Palliative/EOL care must draw on a different set of skills that honor care beyond cure provided in a culturally sensitive manner.

Emission sources and quantities

International Nuclear Information System (INIS)

Heinen, B.

1991-01-01

The paper examines emission sources and quantities for SO 2 and NO x . Natural SO 2 is released from volcanic sources and to a much lower extent from marsh gases. In nature NO x is mainly produced in the course of the chemical and bacterial denitrification processes going on in the soil. Manmade pollutants are produced in combustion processes. The paper concentrates on manmade pollution. Aspects discussed include: mechanism of pollution development; manmade emission sources (e.g. industry, traffic, power plants and domestic sources); and emission quantities and forecasts. 11 refs., 2 figs., 5 tabs

Fission-product source terms

International Nuclear Information System (INIS)

Lorenz, R.A.

1981-01-01

This presentation consists of a review of fission-product source terms for light water reactor (LWR) fuel. A source term is the quantity of fission products released under specified conditions that can be used to calculate the consequences of the release. The source term usually defines release from breached fuel-rod cladding but could also describe release from the primary coolant system, the reactor containment shell, or the site boundary. The source term would be different for each locality, and the chemical and physical forms of the fission products could also differ

Patient-centered pharmacovigilance: A review | Saleh | Tropical ...

African Journals Online (AJOL)

The studies were extracted from seven databases, viz, Google Scholars, Medline, Academic Search Complete “EBSCO”, Health and Medical Complete ProQuest, Science Direct- Elsevier, SCOPUS and Wiley Online Library. Results: The review revealed that although the reports by patients were of good quality, the patients' ...

Solid medical waste management in Africa

African Journals Online (AJOL)

user

databases searched using the same search terms included Web of. Science, Embase, Scopus, Proquest and African ..... Shannon, Taubman Library, University of Michigan, Ann. Arbor, USA, Ms. Irene Rattenborg, ..... Healthcare waste management in clinics in a rural health district in. KwaZulu-Natal. South Afr J Epidemiol ...

Which Extrinsic and Intrinsic Factors are Associated with Non-Contact Injuries in Adult Cricket Fast Bowlers?

Science.gov (United States)

Olivier, Benita; Taljaard, Tracy; Burger, Elaine; Brukner, Peter; Orchard, John; Gray, Janine; Botha, Nadine; Stewart, Aimee; Mckinon, Warrick

2016-01-01

The high prevalence of injury amongst cricket fast bowlers exposes a great need for research into the risk factors associated with injury. Both extrinsic (environment-related) and intrinsic (person-related) risk factors are likely to be implicated within the high prevalence of non-contact injury amongst fast bowlers in cricket. Identifying and defining the relative importance of these risk factors is necessary in order to optimize injury prevention efforts. The objective of this review was to assess and summarize the scientific literature related to the extrinsic and intrinsic factors associated with non-contact injury inherent to adult cricket fast bowlers. A systematic review was performed in compliance with the PRISMA guidelines. This review considered both experimental and epidemiological study designs. Studies that included male cricket fast bowlers aged 18 years or above, from all levels of play, evaluating the association between extrinsic/intrinsic factors and injury in fast bowlers were considered for inclusion. The three-step search strategy aimed at finding both published and unpublished studies from all languages. The searched databases included MEDLINE via PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), the Cochrane Controlled Trials Register in the Cochrane Library, Physiotherapy Evidence Database (PEDro), ProQuest 5000 International, ProQuest Health and Medical Complete, EBSCO MegaFile Premier, Science Direct, SPORTDiscus with Full Text and SCOPUS (prior to 28 April 2015). Initial keywords used were 'cricket', 'pace', 'fast', 'bowler', and 'injury'. Papers which fitted the inclusion criteria were assessed by two independent reviewers for methodological validity prior to inclusion in the review using standardized critical appraisal instruments from the Joanna Briggs Institute Meta Analysis of Statistics Assessment and Review Instrument (JBI-MAStARI). A total of 16 studies were determined to be suitable for inclusion in this

Source Monitoring in Alzheimer's Disease

Science.gov (United States)

El Haj, Mohamad; Fasotti, Luciano; Allain, Philippe

2012-01-01

Source monitoring is the process of making judgments about the origin of memories. There are three categories of source monitoring: reality monitoring (discrimination between self- versus other-generated sources), external monitoring (discrimination between several external sources), and internal monitoring (discrimination between two types of…

Belgrade waterworks groundwater source

International Nuclear Information System (INIS)

Sotic, A.; Dasic, M.; Vukcevic, G.; Vasiljevic, Lj.; Nikolic, S.

2002-01-01

Paper deals with Belgrade Waterworks groundwater source, its characteristics, conception of protection programme, contaminations on source and with parameters of groundwater quality degradation. Groundwaters present natural heritage with their strategic and slow renewable natural resources attributes, and as such they require priority in protection. It is of greatest need that existing source is to be protected and used optimally for producing quality drinkable water. The concept of source protection programme should be based on regular water quality monitoring, identification of contaminators, defining areas of their influences on the source and their permanent control. However, in the last 10 years, but drastically in the last 3, because of the overall situation in the country, it is very characteristic downfall in volume of business, organisation and the level of supply of the technical equipment

Influence of source geometry and materials on the transverse axis dosimetry of 192Ir brachytherapy sources

International Nuclear Information System (INIS)

Wang, Ruqing; Sloboda, Ron S.

1998-01-01

Monte Carlo dose rates on the transverse axis in water and air kerma strengths normalized to unit source activity were calculated for a low dose rate steel-clad 192 Ir source, MicroSelectron high dose rate and pulsed dose rate 192 Ir sources, and a VariSource high dose rate 192 Ir source, as well as five other hypothetical cylindrical 192 Ir source designs. Based on these results, the dependence of dose rate and air kerma strength on source geometry and materials was analysed. Source geometry and attenuation in the core material are the important factors determining basic dosimetric characteristics. Core length, h, only affects the dose rate on the transverse axis at radial distances r 192 Ir sources is suggested, and similarities and differences in the dose rate constant and radial dose function between these sources are explained. (author)

[Source data management in clinical researches].

Science.gov (United States)

Ho, Effie; Yao, Chen; Zhang, Zi-bao; Liu, Yu-xiu

2015-11-01

Source data and its source documents are the foundation of clinical research. Proper source data management plays an essential role for compliance with regulatory and GCP requirements. Both paper and electronic source data co-exist in China. Due to the increasing use of electronic technology in pharmaceutical and health care industry, electronic data source becomes an upcoming trend with clear advantages. To face new opportunities and to ensure data integrity, quality and traceability from source data to regulatory submission, this document demonstrates important concepts, principles and best practices during managing source data. It includes but not limited to: (1) important concepts of source data (e.g., source data originator, source data elements, source data identifier for audit trail, etc.); (2) various modalities of source data collection in paper and electronic methods (e.g., paper CRF, EDC, Patient Report Outcomes/eCOA, etc.); (3) seven main principles recommended in the aspect of data collection, traceability, quality standards, access control, quality control, certified copy and security during source data management; (4) a life cycle from source data creation to obsolete is used as an example to illustrate consideration and implementation of source data management.

Polarized electron sources

Energy Technology Data Exchange (ETDEWEB)

Prepost, R. [Univ. of Wisconsin, Madison, WI (United States)

1994-12-01

The fundamentals of polarized electron sources are described with particular application to the Stanford Linear Accelerator Center. The SLAC polarized electron source is based on the principle of polarized photoemission from Gallium Arsenide. Recent developments using epitaxially grown, strained Gallium Arsenide cathodes have made it possible to obtain electron polarization significantly in excess of the conventional 50% polarization limit. The basic principles for Gallium and Arsenide polarized photoemitters are reviewed, and the extension of the basic technique to strained cathode structures is described. Results from laboratory measurements of strained photocathodes as well as operational results from the SLAC polarized source are presented.

Polarized electron sources

International Nuclear Information System (INIS)

Prepost, R.

1994-01-01

The fundamentals of polarized electron sources are described with particular application to the Stanford Linear Accelerator Center. The SLAC polarized electron source is based on the principle of polarized photoemission from Gallium Arsenide. Recent developments using epitaxially grown, strained Gallium Arsenide cathodes have made it possible to obtain electron polarization significantly in excess of the conventional 50% polarization limit. The basic principles for Gallium and Arsenide polarized photoemitters are reviewed, and the extension of the basic technique to strained cathode structures is described. Results from laboratory measurements of strained photocathodes as well as operational results from the SLAC polarized source are presented

Open source development

DEFF Research Database (Denmark)

Ulhøi, John Parm

2004-01-01

This paper addresses innovations based on open source or non-proprietary knowledge. Viewed through the lens of private property theory, such agency appears to be a true anomaly. However, by a further turn of the theoretical kaleidoscope, we will show that there may be perfectly justifiable reasons...... for not regarding open source innovations as anomalies. The paper is based on three sectorial and generic cases of open source innovation, which is an offspring of contemporary theory made possible by combining elements of the model of private agency with those of the model of collective agency. In closing...

Reviewing Instructional Studies Conducted Using Video Modeling to Children with Autism

Science.gov (United States)

Acar, Cimen; Diken, Ibrahim H.

2012-01-01

This study explored 31 instructional research articles written using video modeling to children with autism and published in peer-reviewed journals. The studies in this research have been reached by searching EBSCO, Academic Search Complete, ERIC and other Anadolu University online search engines and using keywords such as "autism, video modeling,…

Heavy ion fusion sources

International Nuclear Information System (INIS)

Grote, D.P.; Kwan, J.; Westenskow, G.

2003-01-01

In Heavy-Fusion and in other applications, there is a need for high brightness sources with both high current and low emittance. The traditional design with a single monolithic source, while very successful, has significant constraints on it when going to higher currents. With the Child-Langmuir current-density limit, geometric aberration limits, and voltage breakdown limits, the area of the source becomes a high power of the current, A ∼ I 8/3 . We are examining a multi-beamlet source, avoiding the constraints by having many beamlets each with low current and small area. The beamlets are created and initially accelerated separately and then merged to form a single beam. This design offers a number of potential advantages over a monolithic source, such as a smaller transverse footprint, more control over the shaping and aiming of the beam, and more flexibility in the choice of ion sources. A potential drawback, however, is the emittance that results from the merging of the beamlets. We have designed injectors using simulation that have acceptably low emittance and are beginning to examine them experimentally

Fission product gamma-ray sources as an alternative to cobalt-60 sources for sewage sludge sterilization

International Nuclear Information System (INIS)

Herrnberger, V.R.D.

1975-01-01

The sterilization of sewage sludge is now performed successfully using 60 Co gamma-ray sources. The question arises whether more economic gamma-ray sources exist that could replace the 60 Co source. The following types of sources are considered: Spent fuel elements; mixtures of solidified fission products; and isolated solidified fission products such as 134 / 137 Cs. For a particular irradiation plant the specific source costs (S.Fr./Ci) and their contribution to the irradiation costs for 1 m 3 of sewage irradiated to a dose of 250 krad(S.Fr./m 3 ) are determined and compared with the costs of a plant using a 60 Co source. The encapsulation costs and the effect of the gamma absorption of the source are taken into account. Different encapsulation and source management techniques are reviewed to find the most economic for each source type. A spent fuel element irradiation facility is recommended for use either in combination with a sewage water purification plant or as part of a power reactor station where it replaces the storage water pool for the spent fuel elements. Additional source capsules are not envisaged, as long as double-walled source containers are used. The fission product mixtures are enclosed in double-walled capsules of two different forms: Small cylindrical rods and hollow cylinders. For caesium and cobalt cylindrical rods only are used. The main conclusions of the study are that the highest irradiation costs arise from the use of a fission product mixture source. The costs are, however, only 15% above those of a 60 Co plant. To be competitive the flow-rate has to be adapted to the decreasing activity of the source, resulting in a reduction to 20% within ten years of source utilization. The integrated irradiation plant with a spent fuel element source offers irradiation costs comparable with those of a 60 Co plant, if the flow-rate is constant during one year of source utilization. The irradiation costs are reduced to 25% of those of a 60 Co plant

Accelerator based continuous neutron source.

CERN Document Server

Shapiro, S M; Ruggiero, A G

2003-01-01

Until the last decade, most neutron experiments have been performed at steady-state, reactor-based sources. Recently, however, pulsed spallation sources have been shown to be very useful in a wide range of neutron studies. A major review of neutron sources in the US was conducted by a committee chaired by Nobel laureate Prof. W. Kohn: ''Neutron Sources for America's Future-BESAC Panel on Neutron Sources 1/93''. This distinguished panel concluded that steady state and pulsed sources are complementary and that the nation has need for both to maintain a balanced neutron research program. The report recommended that both a new reactor and a spallation source be built. This complementarity is recognized worldwide. The conclusion of this report is that a new continuous neutron source is needed for the second decade of the 20 year plan to replace aging US research reactors and close the US neutron gap. it is based on spallation production of neutrons using a high power continuous superconducting linac to generate pr...

Equivalent charge source model based iterative maximum neighbor weight for sparse EEG source localization.

Science.gov (United States)

Xu, Peng; Tian, Yin; Lei, Xu; Hu, Xiao; Yao, Dezhong

2008-12-01

How to localize the neural electric activities within brain effectively and precisely from the scalp electroencephalogram (EEG) recordings is a critical issue for current study in clinical neurology and cognitive neuroscience. In this paper, based on the charge source model and the iterative re-weighted strategy, proposed is a new maximum neighbor weight based iterative sparse source imaging method, termed as CMOSS (Charge source model based Maximum neighbOr weight Sparse Solution). Different from the weight used in focal underdetermined system solver (FOCUSS) where the weight for each point in the discrete solution space is independently updated in iterations, the new designed weight for each point in each iteration is determined by the source solution of the last iteration at both the point and its neighbors. Using such a new weight, the next iteration may have a bigger chance to rectify the local source location bias existed in the previous iteration solution. The simulation studies with comparison to FOCUSS and LORETA for various source configurations were conducted on a realistic 3-shell head model, and the results confirmed the validation of CMOSS for sparse EEG source localization. Finally, CMOSS was applied to localize sources elicited in a visual stimuli experiment, and the result was consistent with those source areas involved in visual processing reported in previous studies.

Argonne inverted sputter source

International Nuclear Information System (INIS)

Yntema, J.L.; Billquist, P.J.

1983-01-01

The emittance of the inverted sputter source with immersion lenses was measured to be about 5π mm mrad MeV/sup 1/2/ at the 75% level over a wide range of beam intensities. The use of the source in experiments with radioactive sputter targets and hydrogen loaded targets is described. Self contamination of the source is discussed

H- source developments

International Nuclear Information System (INIS)

Allison, P.W.

1978-01-01

The design and operation of a Penning discharge, cold cathode, surface plasma H - ion source are described. A high current density, about 2 A/cm 2 , is extracted from the source by putting about 20 keV across the 2 to 2 1 / 2 mm gap

Radioactive Sources Service

CERN Document Server

2007-01-01

Please note that the radioactive sources service will be open by appointment only every Monday, Wednesday and Friday during CERN working hours (instead of alternate weeks). In addition, please note that our 2007 schedule is available on our web site: http://cern.ch/service-rp-sources

Online Sources of Competitive Intelligence.

Science.gov (United States)

Wagers, Robert

1986-01-01

Presents an approach to using online sources of information for competitor intelligence (i.e., monitoring industry and tracking activities of competitors); identifies principal sources; and suggests some ways of making use of online databases. Types and sources of information and sources and database charts are appended. Eight references are…

Alternative Energy Sources

CERN Document Server

Michaelides, Efstathios E (Stathis)

2012-01-01

Alternative Energy Sources is designed to give the reader, a clear view of the role each form of alternative energy may play in supplying the energy needs of the human society in the near and intermediate future (20-50 years).   The two first chapters on energy demand and supply and environmental effects, set the tone as to why the widespread use of alternative energy is essential for the future of human society. The third chapter exposes the reader to the laws of energy conversion processes, as well as the limitations of converting one energy form to another. The sections on exergy give a succinct, quantitative background on the capability/potential of each energy source to produce power on a global scale. The fourth, fifth and sixth chapters are expositions of fission and fusion nuclear energy. The following five chapters (seventh to eleventh) include detailed descriptions of the most common renewable energy sources – wind, solar, geothermal, biomass, hydroelectric – and some of the less common sources...

Californium source transfer

International Nuclear Information System (INIS)

Wallace, C.R.

1995-01-01

In early 1995, the receipt of four sealed californium-252 sources from Oak Ridge National Lab was successfully accomplished by a team comprised of Radiological Engineering, Radiological Operations and Health Physics Instrumentation personnel. A procedure was developed and walked-down by the participants during a Dry Run Evolution. Several special tools were developed during the pre-planning phases of the project which reduced individual and job dose to minimal levels. These included a mobile lifting device for attachment of a transfer ball valve assembly to the undercarriage of the Cannonball Carrier, a transfer tube elbow to ensure proper angle of the source transfer tube, and several tools used during emergency response for remote retrieval and handling of an unshielded source. Lessons were learned in the areas of contamination control, emergency preparedness, and benefits of thorough pre-planning, effectiveness of locally creating and designing special tools to reduce worker dose, and methods of successfully accomplishing source receipt evolutions during extreme or inclement weather

Muon sources

International Nuclear Information System (INIS)

Parsa, Z.

2001-01-01

A full high energy muon collider may take considerable time to realize. However, intermediate steps in its direction are possible and could help facilitate the process. Employing an intense muon source to carry out forefront low energy research, such as the search for muon-number non-conservation, represents one interesting possibility. For example, the MECO proposal at BNL aims for 2 x 10 -17 sensitivity in their search for coherent muon-electron conversion in the field of a nucleus. To reach that goal requires the production, capture and stopping of muons at an unprecedented 10 11 μ/sec. If successful, such an effort would significantly advance the state of muon technology. More ambitious ideas for utilizing high intensity muon sources are also being explored. Building a muon storage ring for the purpose of providing intense high energy neutrino beams is particularly exciting.We present an overview of muon sources and example of a muon storage ring based Neutrino Factory at BNL with various detector location possibilities

The Chandra Source Catalog: Algorithms

Science.gov (United States)

McDowell, Jonathan; Evans, I. N.; Primini, F. A.; Glotfelty, K. J.; McCollough, M. L.; Houck, J. C.; Nowak, M. A.; Karovska, M.; Davis, J. E.; Rots, A. H.; Siemiginowska, A. L.; Hain, R.; Evans, J. D.; Anderson, C. S.; Bonaventura, N. R.; Chen, J. C.; Doe, S. M.; Fabbiano, G.; Galle, E. C.; Gibbs, D. G., II; Grier, J. D.; Hall, D. M.; Harbo, P. N.; He, X.; Lauer, J.; Miller, J. B.; Mitschang, A. W.; Morgan, D. L.; Nichols, J. S.; Plummer, D. A.; Refsdal, B. L.; Sundheim, B. A.; Tibbetts, M. S.; van Stone, D. W.; Winkelman, S. L.; Zografou, P.

2009-09-01

Creation of the Chandra Source Catalog (CSC) required adjustment of existing pipeline processing, adaptation of existing interactive analysis software for automated use, and development of entirely new algorithms. Data calibration was based on the existing pipeline, but more rigorous data cleaning was applied and the latest calibration data products were used. For source detection, a local background map was created including the effects of ACIS source readout streaks. The existing wavelet source detection algorithm was modified and a set of post-processing scripts used to correct the results. To analyse the source properties we ran the SAO Traceray trace code for each source to generate a model point spread function, allowing us to find encircled energy correction factors and estimate source extent. Further algorithms were developed to characterize the spectral, spatial and temporal properties of the sources and to estimate the confidence intervals on count rates and fluxes. Finally, sources detected in multiple observations were matched, and best estimates of their merged properties derived. In this paper we present an overview of the algorithms used, with more detailed treatment of some of the newly developed algorithms presented in companion papers.

MEDINA: MECCA Development in Accelerators – KPP Fortran to CUDA source-to-source Pre-processor

Directory of Open Access Journals (Sweden)

Michail Alvanos

2017-04-01

Full Text Available The global climate model ECHAM/MESSy Atmospheric Chemistry (EMAC is a modular global model that simulates climate change and air quality scenarios. The application includes different sub-models for the calculation of chemical species concentrations, their interaction with land and sea, and the human interaction. The paper presents a source-to-source parser that enables support for Graphics Processing Units (GPU by the Kinetic Pre-Processor (KPP general purpose open-source software tool. The requirements of the host system are also described. The source code of the source-to-source parser is available under the MIT License.

Photonic crystal light source

Science.gov (United States)

Fleming, James G [Albuquerque, NM; Lin, Shawn-Yu [Albuquerque, NM; Bur, James A [Corrales, NM

2004-07-27

A light source is provided by a photonic crystal having an enhanced photonic density-of-states over a band of frequencies and wherein at least one of the dielectric materials of the photonic crystal has a complex dielectric constant, thereby producing enhanced light emission at the band of frequencies when the photonic crystal is heated. The dielectric material can be a metal, such as tungsten. The spectral properties of the light source can be easily tuned by modification of the photonic crystal structure and materials. The photonic crystal light source can be heated electrically or other heating means. The light source can further include additional photonic crystals that exhibit enhanced light emission at a different band of frequencies to provide for color mixing. The photonic crystal light source may have applications in optical telecommunications, information displays, energy conversion, sensors, and other optical applications.

Land Streamer Surveying Using Multiple Sources

KAUST Repository

Mahmoud, Sherif

2014-12-11

Various examples are provided for land streamer seismic surveying using multiple sources. In one example, among others, a method includes disposing a land streamer in-line with first and second shot sources. The first shot source is at a first source location adjacent to a proximal end of the land streamer and the second shot source is at a second source location separated by a fixed length corresponding to a length of the land streamer. Shot gathers can be obtained when the shot sources are fired. In another example, a system includes a land streamer including a plurality of receivers, a first shot source located adjacent to the proximal end of the land streamer, and a second shot source located in-line with the land streamer and the first shot source. The second shot source is separated from the first shot source by a fixed overall length corresponding to the land streamer.

Leakage of caesium braquitherapy sources

International Nuclear Information System (INIS)

Lozada, J.A.

1998-01-01

In several Venezuelan public hospitals where cervix uteri tumours are treated by intracavitary radiotherapy, that use manual after loading Fletcher method, with Caesium 137 sources, the use of improper source holders, locally manufactured from pieces of drainage plastic tubing, which deteriorated and created a corrosive environment all around the sources, omission of manufacturer's recommendations regarding corrosion information, source storage, inspection and testing, violation of International Atomic Energy Agency Radiation Protection Procedures, and lack of proper regulatory control, resulted integrity damage to about sixty special form sources (ISO2919 C 63322), leakage of Cs-137 from a supposed insoluble refractory active content (caesium silicoaluminate), and contamination of applicators, floors and bedding. When the situation was detected by means removal contamination tests, after routine inspections, the sources were removed from the hospitals, decontaminated by means of immersion in 3% EDTA solution in ultrasonic bath, subjected to leaking assessment tests, and the ones that passed were placed in low cost stainless steel source holders, designed and built by the instituto Venezolano de Investigaciones Cientificas (IVIC) returned to the hospitals. The leaking sources were removed from use and considered radioactive waste. In order to avoid the occurrence of similar situations, all the importers of such sources are now required to send them to IVIC for testing and placement in proper source holders, before they are shipped to the hospitals. (author)

Economic explanations for concurrent sourcing

DEFF Research Database (Denmark)

Mols, Niels Peter

2010-01-01

Concurrent sourcing is a phenomenon where firms simultaneously make and buy the same good, i.e. they simultaneously use the governance modes of market and hierarchy. Though concurrent sourcing seems to be widespread, few studies of sourcing have focused on this phenomenon. This paper reviews...... different economic explanations for why firms use concurrent sourcing. The distinctive features of the explanations are compared, and it is discussed how they may serve as a springboard for research on concurrent sourcing. Managerial implications are also offered....

Plume rise from multiple sources

International Nuclear Information System (INIS)

Briggs, G.A.

1975-01-01

A simple enhancement factor for plume rise from multiple sources is proposed and tested against plume-rise observations. For bent-over buoyant plumes, this results in the recommendation that multiple-source rise be calculated as [(N + S)/(1 + S)]/sup 1/3/ times the single-source rise, Δh 1 , where N is the number of sources and S = 6 (total width of source configuration/N/sup 1/3/ Δh 1 )/sup 3/2/. For calm conditions a crude but simple method is suggested for predicting the height of plume merger and subsequent behavior which is based on the geometry and velocity variations of a single buoyant plume. Finally, it is suggested that large clusters of buoyant sources might occasionally give rise to concentrated vortices either within the source configuration or just downwind of it

Sources of pulsed radiation

International Nuclear Information System (INIS)

Sauer, M.C. Jr.

1981-01-01

Characteristics of various sources of pulsed radiation are examined from the viewpoint of their importance to the radiation chemist, and some examples of uses of such sources are mentioned. A summary is given of the application of methods of physical dosimetry to pulsed sources, and the calibration of convenient chemical dosimeters by physical dosimetry is outlined. 7 figures, 1 table

Degree of polarization and source counts of faint radio sources from Stacking Polarized intensity

International Nuclear Information System (INIS)

Stil, J. M.; George, S. J.; Keller, B. W.; Taylor, A. R.

2014-01-01

We present stacking polarized intensity as a means to study the polarization of sources that are too faint to be detected individually in surveys of polarized radio sources. Stacking offers not only high sensitivity to the median signal of a class of radio sources, but also avoids a detection threshold in polarized intensity, and therefore an arbitrary exclusion of sources with a low percentage of polarization. Correction for polarization bias is done through a Monte Carlo analysis and tested on a simulated survey. We show that the nonlinear relation between the real polarized signal and the detected signal requires knowledge of the shape of the distribution of fractional polarization, which we constrain using the ratio of the upper quartile to the lower quartile of the distribution of stacked polarized intensities. Stacking polarized intensity for NRAO VLA Sky Survey (NVSS) sources down to the detection limit in Stokes I, we find a gradual increase in median fractional polarization that is consistent with a trend that was noticed before for bright NVSS sources, but is much more gradual than found by previous deep surveys of radio polarization. Consequently, the polarized radio source counts derived from our stacking experiment predict fewer polarized radio sources for future surveys with the Square Kilometre Array and its pathfinders.

Calibrate the aerial surveying instrument by the limited surface source and the single point source that replace the unlimited surface source

CERN Document Server

Lu Cun Heng

1999-01-01

It is described that the calculating formula and surveying result is found on the basis of the stacking principle of gamma ray and the feature of hexagonal surface source when the limited surface source replaces the unlimited surface source to calibrate the aerial survey instrument on the ground, and that it is found in the light of the exchanged principle of the gamma ray when the single point source replaces the unlimited surface source to calibrate aerial surveying instrument in the air. Meanwhile through the theoretical analysis, the receiving rate of the crystal bottom and side surfaces is calculated when aerial surveying instrument receives gamma ray. The mathematical expression of the gamma ray decaying following height according to the Jinge function regularity is got. According to this regularity, the absorbing coefficient that air absorbs the gamma ray and the detective efficiency coefficient of the crystal is calculated based on the ground and air measuring value of the bottom surface receiving cou...

Pseudo-dynamic source modelling with 1-point and 2-point statistics of earthquake source parameters

KAUST Repository

Song, S. G.

2013-12-24

Ground motion prediction is an essential element in seismic hazard and risk analysis. Empirical ground motion prediction approaches have been widely used in the community, but efficient simulation-based ground motion prediction methods are needed to complement empirical approaches, especially in the regions with limited data constraints. Recently, dynamic rupture modelling has been successfully adopted in physics-based source and ground motion modelling, but it is still computationally demanding and many input parameters are not well constrained by observational data. Pseudo-dynamic source modelling keeps the form of kinematic modelling with its computational efficiency, but also tries to emulate the physics of source process. In this paper, we develop a statistical framework that governs the finite-fault rupture process with 1-point and 2-point statistics of source parameters in order to quantify the variability of finite source models for future scenario events. We test this method by extracting 1-point and 2-point statistics from dynamically derived source models and simulating a number of rupture scenarios, given target 1-point and 2-point statistics. We propose a new rupture model generator for stochastic source modelling with the covariance matrix constructed from target 2-point statistics, that is, auto- and cross-correlations. Our sensitivity analysis of near-source ground motions to 1-point and 2-point statistics of source parameters provides insights into relations between statistical rupture properties and ground motions. We observe that larger standard deviation and stronger correlation produce stronger peak ground motions in general. The proposed new source modelling approach will contribute to understanding the effect of earthquake source on near-source ground motion characteristics in a more quantitative and systematic way.

Editorial: Open Source in Government

Directory of Open Access Journals (Sweden)

Dru Lavigne

2009-04-01

Full Text Available Last summer, the Center for Strategic and International Studies published the sixth update to their Open Source Policy survey. The survey "tracks governmental policies on the use of open source software as reported in the press or other media." The report lists 275 open source policy initiatives. It also breaks down by country and by government level whether the policy on the use of open source is considered to be advisory, preferential, or mandatory. The editorial theme for the May issue of the OSBR is "open source in government" and we are pleased that the authors have drawn upon their experiences to provide insight into public policy regarding open source for many parts of the world.

Ion sources for electrostatic accelerators

International Nuclear Information System (INIS)

Hellborg, R.

1998-01-01

Maybe the most important part of an electrostatic accelerator system, and also often the most tricky part is the ion source. There has been a rapid growth in activity in ion-source research and development during the last two to three decades. Some of these developments have also been of benefit to electrostatic accelerator users. In this report some of the different types of ion sources used in electrostatic accelerators are described. The list is not complete but more an overview of some of the more commonly used sources. The description is divided into two groups; positive ion sources for single stage electrostatic accelerators and negative ion sources for two stages (i.e. tandem) accelerators

Radiation sources and technical services

International Nuclear Information System (INIS)

Stonek, K.; Satorie, Z.; Vyskocil, I.

1981-01-01

Work is briefly described of the department for sealed sources production of the Institute, including leak testing and surface contamination of sealed sources. The department also provides technical services including the inspections of sealed sources used in medicine and geology and repair of damaged sources. It carries out research of the mechanical and thermal strength of sealed sources and of the possibility of reprocessing used 226 Ra sources. The despatch department is responsible for supplying the entire country with home and imported radionuclides. The department of technical services is responsible for testing imported radionuclides, assembling materials testing, industrial and medical irradiation devices, and for the collection and storage of low-level wastes on a national scale. (M.D.)

DESIGN OF ALTERNATIVE ENERGY SOURCES

Directory of Open Access Journals (Sweden)

Popa Stefania

2013-11-01

Full Text Available By energy sources we understand technologies and materials used to obtain various forms of energy necessary for the development of society. These sources must be in adequate quantities and be conveniently exploited in terms of technical, economic and sustainable perspective. Alternative energy uses the inherent power of natural sources like wind, tides, the sun. Alternative energy is a term used for some energy sources and energy storage technologies. Generally it indicates energies that are nontraditional and have low impact to the environment. The alternative energy term is used in contrast with the term fossil fuel according to some sources, while other sources use it with the meaning of renewable energy purposes.

Recurring Themes across Fractal Issues Facing International Students: A Thematic Analysis of 2016 Dissertations and Theses

Science.gov (United States)

Bista, Krishna; Gaulee, Uttam

2017-01-01

This section shares recent dissertations and theses with the "Journal of International Students" readers. There were about 139 graduate dissertations and theses related to the issues and challenges of international students in 2016. The complete versions of these selected dissertations are available in the ProQuest, Michigan-based…

Resonance – Journal of Science Education | Indian Academy of ...

Indian Academy of Sciences (India)

https://www.ias.ac.in/article/fulltext/reso/019/03/0222-0241. Keywords. John McCarthy; artificial intelligence; natural language processing; question answering system; IBM; DeepQA; Watson; Jeopardy!; quiz show. Author Affiliations. Raman Chandrasekar1. ProQuest 501 North 34th Street Suite 300, Seattle, WA 98103, USA ...

Human Dimensions of Strategic Leadership : A Selected Bibliogrpahy

Science.gov (United States)

2013-09-01

A Report for the Global Leadership Initiative. Washington, DC: World Bank, 2010. 75pp. (HD57.7 .A53 2010) Bacon , Terry R. The Elements of Power...present from Taylor & Francis . Judgment and Decision Making. Available online 2006-present in ProQuest. Negotiation Journal. Library print holdings begin

Categorization of radiation sources

International Nuclear Information System (INIS)

2000-12-01

The objective of this report is to develop a categorization scheme for radiation sources that could be relevant to decisions both in a retrospective application to bring sources under control and in a prospective sense to guide the application of the regulatory infrastructure. The Action Plan envisages that the preparation of guidance on national strategies and programmes for the detection and location of orphan sources and their subsequent management should commence after the categorization of sources has been carried out. In the prospective application of the system of notification, registration, and licensing, the categorization is relevant to prioritize a regulatory authority's resources and training activities; to guide the degree of detail necessary for a safety assessment; and to serve as a measure of the intensity of effort which a regulatory authority should apply to the safety and security of a particular type of source

Source SDK development essentials

CERN Document Server

Bernier, Brett

2014-01-01

The Source Authoring Tools are the pieces of software used to create custom content for games made with Valve's Source engine. Creating mods and maps for your games without any programming knowledge can be time consuming. These tools allow you to create your own maps and levels without the need for any coding knowledge. All the tools that you need to start creating your own levels are built-in and ready to go! This book will teach you how to use the Authoring Tools provided with Source games and will guide you in creating your first maps and mods (modifications) using Source. You will learn ho

Radiation Safety and Orphan Sources

International Nuclear Information System (INIS)

Janzekovic, H.; Krizman, M.

2006-01-01

The wide spread use of radioactive and particularly of nuclear materials which started in the last century very quickly also demonstrated negative sides. The external exposure and radiotoxicity of these materials could be easily used in a malevolent act. Due to the fact that these materials could not be detected without special equipment designed for that purpose, severe control over their use in all phases of a life cycle is required. An orphan source is a radioactive source which is not under regulatory control, either because it has never been under regulatory or because it has been abandoned, lost, misplaced, stolen or transferred without proper authorization. In the last ten years a few international conferences were dedicated to the improvement of the safety and security of radioactive sources. Three main tasks are focused, the maintenance of data bases related to events with orphan sources and the publications of such events, the preparation of recommendations and guidelines to national regulatory bodies in order to prevent and detect the events related to orphan sources as well as to develop the response strategies to radiological or nuclear emergency, appraisals of the national strategies of radioactive sources control. Concerning Slovenia, strengthening control over orphan sources in Slovenia started after the adoption of new legislation in 2002. It was carried out through several tasks with the aim to prevent orphan sources, as well as to identify the sources which could be potentially orphan sources. The comprehensive methodology was developed by the Slovenian nuclear safety administration (S.N.S.A.) based on international guidelines as well as on the study of national lesson learned cases. The methodology was developed and used in close cooperation with all parties involved, namely other regulatory authorities, police, customs, agency for radioactive waste management (A.R.A.O.), technical support organisations (T.S.O.), users of source, authorised

Radiation Safety and Orphan Sources

Energy Technology Data Exchange (ETDEWEB)

Janzekovic, H.; Krizman, M. [Slovenian Nuclear Safety Administration, Ljubljana (Slovenia)

2006-07-01

The wide spread use of radioactive and particularly of nuclear materials which started in the last century very quickly also demonstrated negative sides. The external exposure and radiotoxicity of these materials could be easily used in a malevolent act. Due to the fact that these materials could not be detected without special equipment designed for that purpose, severe control over their use in all phases of a life cycle is required. An orphan source is a radioactive source which is not under regulatory control, either because it has never been under regulatory or because it has been abandoned, lost, misplaced, stolen or transferred without proper authorization. In the last ten years a few international conferences were dedicated to the improvement of the safety and security of radioactive sources. Three main tasks are focused, the maintenance of data bases related to events with orphan sources and the publications of such events, the preparation of recommendations and guidelines to national regulatory bodies in order to prevent and detect the events related to orphan sources as well as to develop the response strategies to radiological or nuclear emergency, appraisals of the national strategies of radioactive sources control. Concerning Slovenia, strengthening control over orphan sources in Slovenia started after the adoption of new legislation in 2002. It was carried out through several tasks with the aim to prevent orphan sources, as well as to identify the sources which could be potentially orphan sources. The comprehensive methodology was developed by the Slovenian nuclear safety administration (S.N.S.A.) based on international guidelines as well as on the study of national lesson learned cases. The methodology was developed and used in close cooperation with all parties involved, namely other regulatory authorities, police, customs, agency for radioactive waste management (A.R.A.O.), technical support organisations (T.S.O.), users of source, authorised

Global inventory of NOx sources

International Nuclear Information System (INIS)

Delmas, R.; Serca, D.; Jambert, C.

1997-01-01

Nitrogen oxides are key compounds for the oxidation capacity of the troposphere. Their concentration depends on the proximity of sources because of their short atmospheric lifetime. An accurate knowledge of the distribution of their sources and sinks is therefore crucial. At the global scale, the dominant sources of nitrogen oxides - combustion of fossil fuel (about 50%) and biomass burning (about 20%) - are basically anthropogenic. Natural sources, including lightning and microbial activity in soils, represent therefore less than 30% of total emissions. Fertilizer use in agriculture constitutes an anthropogenic perturbation to the microbial source. The methods to estimate the magnitude and distribution of these dominant sources of nitrogen oxides are discussed. Some minor sources which may play a specific role in tropospheric chemistry such as NO x emission from aircraft in the upper troposphere or input from production in the stratosphere from N 2 O photodissociation are also considered

Radiation sources working group summary

International Nuclear Information System (INIS)

Fazio, M.V.

1998-01-01

The Radiation Sources Working Group addressed advanced concepts for the generation of RF energy to power advanced accelerators. The focus of the working group included advanced sources and technologies above 17 GHz. The topics discussed included RF sources above 17 GHz, pulse compression techniques to achieve extreme peak power levels, components technology, technology limitations and physical limits, and other advanced concepts. RF sources included gyroklystrons, magnicons, free-electron masers, two beam accelerators, and gyroharmonic and traveling wave devices. Technology components discussed included advanced cathodes and electron guns, high temperature superconductors for producing magnetic fields, RF breakdown physics and mitigation, and phenomena that impact source design such as fatigue in resonant structures due to RF heating. New approaches for RF source diagnostics located internal to the source were discussed for detecting plasma and beam phenomena existing in high energy density electrodynamic systems in order to help elucidate the reasons for performance limitations

Properties of neutron sources

International Nuclear Information System (INIS)

1987-03-01

The Conference presentations were divided into sessions devoted to the following topics: white neutron sources, primarily pulsed (6 papers); fast neutron fields (5 papers); Californium-252 prompt fission neutron spectra (14 papers); monoenergetic sources and filtered beams (11 papers); 14 MeV neutron sources (10 papers); selected special application (one paper); and a general interest session (4 papers). Individual abstracts were prepared separately for the papers

Robot-Mediated Upper Limb Physiotherapy: Review and Recommendations for Future Clinical Trials

Science.gov (United States)

Peter, Orsolya; Fazekas, Gabor; Zsiga, Katalin; Denes, Zoltan

2011-01-01

Robot-mediated physiotherapy provides a new possibility for improving the outcome of rehabilitation of patients who are recovering from stroke. This study is a review of robot-supported upper limb physiotherapy focusing on the shoulder, elbow, and wrist. A literature search was carried out in PubMed, OVID, and EBSCO for clinical trials with robots…

Mapping the Stacks: Sustainability and User Experience of Animated Maps in Library Discovery Interfaces

Science.gov (United States)

McMillin, Bill; Gibson, Sally; MacDonald, Jean

2016-01-01

Animated maps of the library stacks were integrated into the catalog interface at Pratt Institute and into the EBSCO Discovery Service interface at Illinois State University. The mapping feature was developed for optimal automation of the update process to enable a range of library personnel to update maps and call-number ranges. The development…

Preparing College Students To Search Full-Text Databases: Is Instruction Necessary?

Science.gov (United States)

Riley, Cheryl; Wales, Barbara

Full-text databases allow Central Missouri State University's clients to access some of the serials that libraries have had to cancel due to escalating subscription costs; EbscoHost, the subject of this study, is one such database. The database is available free to all Missouri residents. A survey was designed consisting of 21 questions intended…

A Collection of Studies Conducted in Education about "Global Warming" Problem

Science.gov (United States)

Bozdogan, Aykut Emre

2011-01-01

The studies global warming problem conducted in education discipline in the world and in Turkey were analysed for this study. The literature was reviewed extensively especially through the articles in the indexed journals of Ebsco Host, Science Direct, Taylor and Francis and Web of Science databases and this study was conducted according to the…

Impact of a Discovery System on Interlibrary Loan

Science.gov (United States)

Musser, Linda R.; Coopey, Barbara M.

2016-01-01

Web-scale discovery services such as Summon (Serial Solutions), WorldCat Local (OCLC), EDS (EBSCO), and Primo (Ex Libris) are often touted as a single search solution to connect users to library-owned and -licensed content, improving discoverability and retrieval of resources. Assessing how well these systems achieve this goal can be challenging,…

Investigation on Ion Source Parameters

CERN Document Server

M. Cheikh Mhamed, S. Essabaa, C. Lau

The EURISOL multi-mega-watt target station requires dedicated radioactive ion sources. Notably, they must be capable of operating under extremely hard radiations and with a larger fission target producing over 1014 fissions/s. The realisation of next-generation ion sources suitable for such operating conditions needs exhaustive studies and developments. In order to take up such a challenge, a review on radioactive ion sources was achieved and the investigation on ion source parameters was in particular focused on a plasma ion source through a R&D program.

Safe handling of radiation sources

International Nuclear Information System (INIS)

Abd Nasir Ibrahim; Azali Muhammad; Ab Razak Hamzah; Abd Aziz Mohamed; Mohammad Pauzi Ismail

2004-01-01

This chapter discussed the subjects related to the safe handling of radiation sources: type of radiation sources, method of use: transport within premises, transport outside premises; Disposal of Gamma Sources

Assessing Model Characterization of Single Source ...

Science.gov (United States)

Aircraft measurements made downwind from specific coal fired power plants during the 2013 Southeast Nexus field campaign provide a unique opportunity to evaluate single source photochemical model predictions of both O3 and secondary PM2.5 species. The model did well at predicting downwind plume placement. The model shows similar patterns of an increasing fraction of PM2.5 sulfate ion to the sum of SO2 and PM2.5 sulfate ion by distance from the source compared with ambient based estimates. The model was less consistent in capturing downwind ambient based trends in conversion of NOX to NOY from these sources. Source sensitivity approaches capture near-source O3 titration by fresh NO emissions, in particular subgrid plume treatment. However, capturing this near-source chemical feature did not translate into better downwind peak estimates of single source O3 impacts. The model estimated O3 production from these sources but often was lower than ambient based source production. The downwind transect ambient measurements, in particular secondary PM2.5 and O3, have some level of contribution from other sources which makes direct comparison with model source contribution challenging. Model source attribution results suggest contribution to secondary pollutants from multiple sources even where primary pollutants indicate the presence of a single source. The National Exposure Research Laboratory (NERL) Computational Exposure Division (CED) develops and evaluates data, deci

Recent negative ion source developments

International Nuclear Information System (INIS)

Alton, G.D.

1978-01-01

This report describes recent results obtained from studies associated with the development of negative ion sources which utilize sputtering in a diffuse cesium plasma as a means of ion beam generation. Data are presented which relate negative ion yield and important operational parameters such as cesium oven temperature and sputter probe voltage from each of the following sources: (1) A source based in principle according to the University of Aarhus design and (2) an axial geometry source. The important design aspects of the sources are given--along with a list of the negative ion intensities observed to date. Also a qualitative description and interpretation of the negative ion generation mechanism in sources which utilize sputtering in the presence of cesium is given

The status of DESY H- - sources

International Nuclear Information System (INIS)

Peters, J.

1996-01-01

Two different types of H - sources are operated at DESY, a magnetron source and an rf- driven volume source. H - sources for HERA have to run for long uninterrupted periods with a low duty factor and a high reliability. Several necessary improvements are under construction for our rf - driven volume source. The status of both our magnetron and our volume source will be discussed and the first LINAC III experiment with the rf-driven volume source will be presented. (author)

Separation of non-stationary multi-source sound field based on the interpolated time-domain equivalent source method

Science.gov (United States)

Bi, Chuan-Xing; Geng, Lin; Zhang, Xiao-Zheng

2016-05-01

In the sound field with multiple non-stationary sources, the measured pressure is the sum of the pressures generated by all sources, and thus cannot be used directly for studying the vibration and sound radiation characteristics of every source alone. This paper proposes a separation model based on the interpolated time-domain equivalent source method (ITDESM) to separate the pressure field belonging to every source from the non-stationary multi-source sound field. In the proposed method, ITDESM is first extended to establish the relationship between the mixed time-dependent pressure and all the equivalent sources distributed on every source with known location and geometry information, and all the equivalent source strengths at each time step are solved by an iterative solving process; then, the corresponding equivalent source strengths of one interested source are used to calculate the pressure field generated by that source alone. Numerical simulation of two baffled circular pistons demonstrates that the proposed method can be effective in separating the non-stationary pressure generated by every source alone in both time and space domains. An experiment with two speakers in a semi-anechoic chamber further evidences the effectiveness of the proposed method.

Compact radio sources

International Nuclear Information System (INIS)

Altschuler, D.R.

1975-01-01

Eighty-seven compact radio sources were monitored between 1971 and 1974 with the National Radio Astronomy Observatory interferometer. Both flux density and polarization were measured at intervals of about one month at wavelengths of 3.7 and 11.1 cms. Forty-four sources showed definite variability in their total and/or polarized flux density. The variations in polarization were of a shorter time scale than the corresponding flux density variations. Some of the qualitative features of an expanding source model were observed. The data suggest that some form of injection of relativistic electrons is taking place. The absence of significant depolarization in the variable sources indicates that only a small fraction of the mass of the radio outburst is in the form of non-relativistic plasma. Some of the objects observed belong to the BL-Lacertal class. It is shown that this class is very inhomogeneous in its radio properties. For the violently variable BL-Lacertal type objects the spectrum, flux variations and polarization data strongly suggest that these are very young objects

Open-source colorimeter.

Science.gov (United States)

Anzalone, Gerald C; Glover, Alexandra G; Pearce, Joshua M

2013-04-19

The high cost of what have historically been sophisticated research-related sensors and tools has limited their adoption to a relatively small group of well-funded researchers. This paper provides a methodology for applying an open-source approach to design and development of a colorimeter. A 3-D printable, open-source colorimeter utilizing only open-source hardware and software solutions and readily available discrete components is discussed and its performance compared to a commercial portable colorimeter. Performance is evaluated with commercial vials prepared for the closed reflux chemical oxygen demand (COD) method. This approach reduced the cost of reliable closed reflux COD by two orders of magnitude making it an economic alternative for the vast majority of potential users. The open-source colorimeter demonstrated good reproducibility and serves as a platform for further development and derivation of the design for other, similar purposes such as nephelometry. This approach promises unprecedented access to sophisticated instrumentation based on low-cost sensors by those most in need of it, under-developed and developing world laboratories.

Open-Source Colorimeter

Science.gov (United States)

Anzalone, Gerald C.; Glover, Alexandra G.; Pearce, Joshua M.

2013-01-01

The high cost of what have historically been sophisticated research-related sensors and tools has limited their adoption to a relatively small group of well-funded researchers. This paper provides a methodology for applying an open-source approach to design and development of a colorimeter. A 3-D printable, open-source colorimeter utilizing only open-source hardware and software solutions and readily available discrete components is discussed and its performance compared to a commercial portable colorimeter. Performance is evaluated with commercial vials prepared for the closed reflux chemical oxygen demand (COD) method. This approach reduced the cost of reliable closed reflux COD by two orders of magnitude making it an economic alternative for the vast majority of potential users. The open-source colorimeter demonstrated good reproducibility and serves as a platform for further development and derivation of the design for other, similar purposes such as nephelometry. This approach promises unprecedented access to sophisticated instrumentation based on low-cost sensors by those most in need of it, under-developed and developing world laboratories. PMID:23604032

Source and replica calculations

International Nuclear Information System (INIS)

Whalen, P.P.

1994-01-01

The starting point of the Hiroshima-Nagasaki Dose Reevaluation Program is the energy and directional distributions of the prompt neutron and gamma-ray radiation emitted from the exploding bombs. A brief introduction to the neutron source calculations is presented. The development of our current understanding of the source problem is outlined. It is recommended that adjoint calculations be used to modify source spectra to resolve the neutron discrepancy problem

sources

Directory of Open Access Journals (Sweden)

Shu-Yin Chiang

2002-01-01

Full Text Available In this paper, we study the simplified models of the ATM (Asynchronous Transfer Mode multiplexer network with Bernoulli random traffic sources. Based on the model, the performance measures are analyzed by the different output service schemes.

Some preliminary design considerations for the ANS [Advanced Neutron Source] reactor cold source

International Nuclear Information System (INIS)

Henderson, D.L.

1988-01-01

Two areas concerned with the design of the Advanced Neutron Source (ANS) cold source have been investigated by simple one-dimensional calculations. The gain factors computed for a possible liquid nitrogen-15 cold source moderator are considerably below those computed for the much colder liquid deuterium moderator, as is reasonable considering the difference in moderator temperature. Nevertheless, nitrogen-15 does represent a viable option should safety related issues prohibit the use of deuterium as a moderating material. The slab geometry calculations have indicated that reflection of neutrons may be the dominant moderating mechanism and should be a consideration in the design of the cold source. 9 refs., 2 figs

How Source Information Shapes Lay Interpretations of Science Conflicts: Interplay between Sourcing, Conflict Explanation, Source Evaluation, and Claim Evaluation

Science.gov (United States)

Thomm, Eva; Bromme, Rainer

2016-01-01

When laypeople read controversial scientific information in order to make a personally relevant decision, information on the source is a valuable resource with which to evaluate multiple, competing claims. Due to their bounded understanding, laypeople rely on the expertise of others and need to identify whether sources are credible. The present…

Encontrando al Kaizen : un análisis teórico de la mejora continua

Directory of Open Access Journals (Sweden)

Manuel Francisco Suárez Barraza

2008-12-01

Full Text Available Desde que Masaaki lmai acuño el término de Kaizen a mediados de los años ochenta, este se ha visto como un elemento clave para la competitividad de las empresas japonesas. No obstante, y a pesar de que el Kaizen ha sido definido por el autor que condujo a la luz el término, todavía sigue existiendo en la literatura sobre el tema cierta ambigüedad e inconsistencia. Además, existe una clara necesidad de desarrollar esta teoría en el campo de la dirección de operaciones.El propósito de este trabajo es analizar el Kaizen en la literatura académica y práctica con el fin de mejorar, explorar y hacer una contribución a su potencial perfil teórico. Se realizó una revisión de la literatura usando Kaizen como término de búsqueda en varias bases de datos: Proquest, Business Source Elite, Business Source Premier, Emerald, Science Direct and Google Scholar. También se consultaron libros escritos tanto por académicos como por los que lo practican. La literatura concerniente al Kaizen fue metodológicamente analizada y clasificada. Los hallazgos del estudio indican que el Kaizen es presentado bajo tres perspectivas o esferas, que incluyen una serie de principios y técnicas. Comparando los tres puntos de vista, emergieron un conjunto de principios y/o piedras angulares.Since Masaaki 'mai coined the term Kaizen in the mid eighties it has been regarded as a key element in the competitiveness of Japanese companies. However, even though Kaizen was defined by the author who created the term, writings by scholars and practitioners in the field exhibit a certain degree of ambiguity and inconsistency. Finally, there is a clear need to develop this theory in the field of operations management. Kaizen in the academic and practitioner literature in order to better understand it and further explore and contribute to its potential theoretical profile. A literature review was carried out using Kaizen as a search term. Various databases were used for this

Determination of Key Risk Supervision Areas around River-Type Water Sources Affected by Multiple Risk Sources: A Case Study of Water Sources along the Yangtze’s Nanjing Section

Directory of Open Access Journals (Sweden)

Qi Zhou

2017-02-01

Full Text Available To provide a reference for risk management of water sources, this study screens the key risk supervision areas around river-type water sources (hereinafter referred to as the water sources threatened by multiple fixed risk sources (the risk sources, and establishes a comprehensive methodological system. Specifically, it comprises: (1 method of partitioning risk source concentrated sub-regions for screening water source perimeter key risk supervision areas; (2 approach of determining sub-regional risk indexes (SrRI, which characterizes the scale of sub-regional risks considering factors like risk distribution intensity within sub-regions, risk indexes of risk sources (RIRS, characterizing the risk scale of risk sources and the number of risk sources; and (3 method of calculating sub-region’s risk threats to the water sources (SrTWS which considers the positional relationship between water sources and sub-regions as well as SrRI, and the criteria for determining key supervision sub-regions. Favorable effects are achieved by applying this methodological system in determining water source perimeter sub-regions distributed along the Yangtze’s Nanjing section. Results revealed that for water sources, the key sub-regions needing supervision were SD16, SD06, SD21, SD26, SD15, SD03, SD02, SD32, SD10, SD11, SD14, SD05, SD27, etc., in the order of criticality. The sub-region with the greatest risk threats on the water sources was SD16, which was located in the middle reaches of Yangtze River. In general, sub-regions along the upper Yangtze reaches had greater threats to water sources than the lower reach sub-regions other than SD26 and SD21. Upstream water sources were less subject to the threats of sub-regions than the downstream sources other than NJ09B and NJ03.

Cobalt source calibration

International Nuclear Information System (INIS)

Rizvi, H.M.

1999-01-01

The data obtained from these tests determine the dose rate of the two cobalt sources in SRTC. Building 774-A houses one of these sources while the other resides in room C-067 of Building 773-A. The data from this experiment shows the following: (1) The dose rate of the No.2 cobalt source in Building 774-A measured 1.073 x 10 5 rad/h (June 17, 1999). The dose rate of the Shepherd Model 109 Gamma cobalt source in Building 773-A measured 9.27 x 10 5 rad/h (June 25, 1999). These rates come from placing the graduated cylinder containing the dosimeter solution in the center of the irradiation chamber. (2) Two calibration tests in the 774-A source placed the graduated cylinder with the dosimeter solution approximately 1.5 inches off center in the axial direction. This movement of the sample reduced the measured dose rate 0.92% from 1.083 x 10 5 rad/h to 1.073 x 10 5 rad/h. and (3) A similar test in the cobalt source in 773-A placed the graduated cylinder approximately 2.0 inches off center in the axial direction. This change in position reduced the measured dose rate by 10.34% from 1.036 x 10 6 to 9.27 x 10 5 . This testing used chemical dosimetry to measure the dose rate of a radioactive source. In this method, one determines the dose by the chemical change that takes place in the dosimeter. For this calibration experiment, the author used a Fricke (ferrous ammonium sulfate) dosimeter. This solution works well for dose rates to 10 7 rad/h. During irradiation of the Fricke dosimeter solution the Fe 2+ ions ionize to Fe 3+ . When this occurs, the solution acquires a slightly darker tint (not visible to the human eye). To determine the magnitude of the change in Fe ions, one places the solution in an UV-VIS Spectrophotometer. The UV-VIS Spectrophotometer measures the absorbency of the solution. Dividing the absorbency by the total time (in minutes) of exposure yields the dose rate

Categorization of radioactive sources. Revision of IAEA-TECDOC-1191, Categorization of radiation sources

International Nuclear Information System (INIS)

2003-07-01

Radioactive sources are used throughout the world for a wide variety of peaceful purposes in industry, medicine, agriculture, research and education; and they are also used in military applications. The International Basic Safety Standards provide an internationally harmonized basis for ensuring the safe and secure use of sources of ionizing radiation. Because of the wide variety of uses and activities of radiation sources, a categorization system is necessary so that the controls that are applied to the sources are commensurate with the radiological risks. In September 1998, following an assessment of the major findings of the first International Conference on the Safety of Radiation Sources and the Security of Radioactive Materials, held in Dijon, France, from 14 to 18 September 1998 (the Dijon Conference), the IAEA's General Conference (in resolution GC(42)/RES/12), inter alia, encouraged all governments 'to take steps to ensure the existence within their territories of effective national systems of control for ensuring the safety of radiation sources and the security of radioactive materials' and requested the Secretariat 'to prepare for the consideration of the Board of Governors a report on: (i) how national systems for ensuring the safety of radiation sources and the security of radioactive materials can be operated at a high level of effectiveness; and, (ii) whether international undertakings concerned with the effective operation of such systems and attracting broad adherence could be formulated'. In February 1999, the Secretariat submitted to the IAEA Board of Governors a report prepared in response to the request made of it by the General Conference. The Board took up the report at its March 1999 session and, inter alia, requested the Secretariat to prepare an action plan that took into account the conclusions and recommendations in the report, and the Board's discussion of the report. In August 1999, the Secretariat circulated a proposed Action Plan for

Natural sources of ionizing radiations

International Nuclear Information System (INIS)

Marej, A.N.

1984-01-01

Natural sources of ionizing radiations are described in detail. The sources are subdivided into sources of extraterrestrial origin (cosmic radiation) and sources of terrestrial origin. Data on the concentration of different nuclides in rocks, various soils, ground waters, atmospheric air, tissues of plants and animals, various food stuffs are presented. The content of natural radionuclides in environmental objects, related to human activities, is discussed

Power source system for nuclear fusion

International Nuclear Information System (INIS)

Nakagawa, Satoshi.

1975-01-01

Object: When using an external system power source and an exclusive power source in a power source circuit for supplying power to the coils of a nuclear fusion apparatus, to minimize the capacity of the exclusive power source and provide an economical power source circuit construction. Structure: In the initial stage of the power supply, rectifying means provided in individual blocks are connected in parallel on the AC side, and power is supplied to the coils of the nuclear fusion apparatus from an external system power source with the exclusive power source held in the disconnected state. Further, at an instant when the limit of permissible input is reached, the afore-mentioned parallel circuit consisting of rectifying means is disconnected, while at the same time the exclusive power source is connected to the input side of the rectifying means provided in a block corresponding to the exclusive power source side, thereby supplying power to the coils of the nuclear fusion apparatus from both the external system power source and exclusive power source. (Kamimura, M.)

Textual appropriation in engineering master's theses: a preliminary study.

Science.gov (United States)

Eckel, Edward J

2011-09-01

In the thesis literature review, an engineering graduate student is expected to place original research in the context of previous work by other researchers. However, for some students, particularly those for whom English is a second language, the literature review may be a mixture of original writing and verbatim source text appropriated without quotations. Such problematic use of source material leaves students vulnerable to an accusation of plagiarism, which carries severe consequences. Is such textual appropriation common in engineering master's writing? Furthermore, what, if anything, can be concluded when two texts have been found to have textual material in common? Do existing definitions of plagiarism provide a sufficient framework for determining if an instance of copying is transgressive or not? In a preliminary attempt to answer these questions, text strings from a random sample of 100 engineering master's theses from the ProQuest Dissertations and Theses database were searched for appropriated verbatim source text using the Google search engine. The results suggest that textual borrowing may indeed be a common feature of the master's engineering literature review, raising questions about the ability of graduate students to synthesize the literature. The study also illustrates the difficulties of making a determination of plagiarism based on simple textual similarity. A context-specific approach is recommended when dealing with any instance of apparent copying.

Magnesium-aerial primary current source

Directory of Open Access Journals (Sweden)

Barba I. N.

2007-12-01

Full Text Available Novel metal-air chemical power sources (CPS 3,0-ВМБ-7,5 have been developed. They have an unlimited shelf life and, even after decades of storage, give almost 100% of the designed capacity. These sources are water-activated. An aqueous salt solution is used as an electrolyte. Such sources are designed for single continuous or discontinuous discharge. The paper presents electrochemical reactions at the electrodes during CPS discharge. Comparison of electrical characteristics of the developed power source and various types of "dry cells" has shown that the developed sources have higher energy characteristics.

Rf power sources

International Nuclear Information System (INIS)

Allen, M.A.

1988-01-01

In this paper, the author reports on RF power sources for accelerator applications. The approach will be with particular customers in mind. These customers are high energy physicists who use accelerators as experimental tools in the study of the nucleus of the atom, and synchrotron light sources derived from electron or positron storage rings. The author pays close attention to electron- positron linear accelerators since the RF sources have always defined what is possible to achieve with these accelerators. Circular machines, cyclotrons, synchrotrons, etc. have usually not been limited by the RF power available and the machine builders have usually had their RF power source requirements met off the shelf. The main challenge for the RF scientist has been then in the areas of controls. An interesting example of this is in the Conceptual Design Report of the Superconducting Super Collider (SSC) where the RF system is described in six pages of text in a 700-page report. Also, the cost of that RF system is about one-third of a percent of the project's total cost. The RF system is well within the state of the art and no new power sources need to be developed. All the intellectual effort of the system designer would be devoted to the feedback systems necessary to stabilize beams during storage and acceleration, with the main engineering challenges (and costs) being in the superconducting magnet lattice

Pulsed spallation Neutron Sources

International Nuclear Information System (INIS)

Carpenter, J.M.

1994-01-01

This paper reviews the early history of pulsed spallation neutron source development at Argonne and provides an overview of existing sources world wide. A number of proposals for machines more powerful than currently exist are under development, which are briefly described. The author reviews the status of the Intense Pulsed Neutron Source, its instrumentation, and its user program, and provides a few examples of applications in fundamental condensed matter physics, materials science and technology

Source-circuit design overview

Science.gov (United States)

Ross, R. G., Jr.

1983-01-01

The source circuit is the fundamental electrical building block of a large central-station array; it consists of a series-parallel network of solar cells that develops full system voltage. The array field is generally made up of a large number of parallel source circuits. Source-circuit electrical configuration is driven by a number of design considerations, which must be considered simultaneously. Array fault tolerance and hot spot heating endurance are examined in detail.

Pulsed spallation neutron sources

International Nuclear Information System (INIS)

Carpenter, J.M.

1996-01-01

This paper reviews the early history of pulsed spallation neutron source development ar Argonne and provides an overview of existing sources world wide. A number of proposals for machines more powerful than currently exist are under development, which are briefly described. The author reviews the status of the Intense Pulsed Neutron Source, its instrumentation, and its user program, and provide a few examples of applications in fundamental condensed matter physics, materials science and technology

Improvements to the internal and external antenna H(-) ion sources at the Spallation Neutron Source.

Science.gov (United States)

Welton, R F; Dudnikov, V G; Han, B X; Murray, S N; Pennisi, T R; Pillar, C; Santana, M; Stockli, M P; Turvey, M W

2014-02-01

The Spallation Neutron Source (SNS), a large scale neutron production facility, routinely operates with 30-40 mA peak current in the linac. Recent measurements have shown that our RF-driven internal antenna, Cs-enhanced, multi-cusp ion sources injects ∼55 mA of H(-) beam current (∼1 ms, 60 Hz) at 65-kV into a Radio Frequency Quadrupole (RFQ) accelerator through a closely coupled electrostatic Low-Energy Beam Transport system. Over the last several years a decrease in RFQ transmission and issues with internal antennas has stimulated source development at the SNS both for the internal and external antenna ion sources. This report discusses progress in improving internal antenna reliability, H(-) yield improvements which resulted from modifications to the outlet aperture assembly (applicable to both internal and external antenna sources) and studies made of the long standing problem of beam persistence with the external antenna source. The current status of the external antenna ion source will also be presented.

Sound as a supportive design intervention for improving health care experience in the clinical ecosystem: A qualitative study.

Science.gov (United States)

Iyendo, Timothy Onosahwo

2017-11-01

Most prior hospital noise research usually deals with sound in its noise facet and is based merely on sound level abatement, rather than as an informative or orientational element. This paper stimulates scientific research into the effect of sound interventions on physical and mental health care in the clinical environment. Data sources comprised relevant World Health Organization guidelines and the results of a literature search of ISI Web of Science, ProQuest Central, MEDLINE, PubMed, Scopus, JSTOR and Google Scholar. Noise induces stress and impedes the recovery process. Pleasant natural sound intervention which includes singing birds, gentle wind and ocean waves, revealed benefits that contribute to perceived restoration of attention and stress recovery in patients and staff. Clinicians should consider pleasant natural sounds perception as a low-risk non-pharmacological and unobtrusive intervention that should be implemented in their routine care for speedier recovery of patients undergoing medical procedures. Copyright © 2017 Elsevier Ltd. All rights reserved.

Concept analysis: nurse-to-nurse lateral violence.

Science.gov (United States)

Embree, Jennifer L; White, Ann H

2010-01-01

The purpose of this paper is to examine the concept of nurse-to-nurse lateral violence (LV). Published literature--LV among nurses is significant and results in social, psychological, and physical consequences, negative patient and nursing outcomes, and damaged relationships. An extensive review of literature through Health Source, Cumulative Index to Nursing and Allied Health Literature (CINAHL), ProQuest health, and Medical Complete was used to determine agreement and disagreement across disciplines and emerging trends. This concept analysis demonstrates that nurse-to-nurse LV is nurse-to-nurse aggression with overtly or covertly directing dissatisfaction toward another. Origins include role issues, oppression, strict hierarchy, disenfranchising work practices, low self-esteem, powerlessness perception, anger, and circuits of power. The result of this analysis provides guidance for further conceptual and empirical research as well as for clinical practice. Organizations must learn how to eliminate antecedents and provide nurses with skills and techniques to eradicate LV to improve the nursing work environment, patient care outcomes, and nurse retention.

75 FR 68296 - Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources...

Science.gov (United States)

2010-11-05

... Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources: Sewage... ``Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources: Sewage... performance standards for new units and emission guidelines for existing units for specific categories of...

Energy sources

International Nuclear Information System (INIS)

Vajda, Gy.

1998-01-01

A comprehensive review is presented of the available sources of energy in the world is presented. About 80 percent of primary energy utilization is based on fossile fuels, and their dominant role is not expected to change in the foreseeable future. Data are given on petroleum, natural gas and coal based power production. The role and economic aspects of nuclear power are analyzed. A brief summary of renewable energy sources is presented. The future prospects of the world's energy resources are discussed, and the special position of Hungary regarding fossil, nuclear and renewable energy and the country's energy potential is evaluated. (R.P.)

Adaptive Functioning in Williams Syndrome: A Systematic Review

Science.gov (United States)

Brawn, Gabrielle; Porter, Melanie

2018-01-01

Literature on the level of adaptive functioning and relative strengths and weaknesses in functioning of individuals with Williams syndrome (WS) was reviewed. The electronic databases PsycINFO, PubMed, Expanded Academic, Web of Science, Scopus and ProQuest were searched electronically for relevant articles and dissertations using the search terms…

Effects of Crowding Combined with Mood on Working Memory Performance among College Students

Science.gov (United States)

Daniel, Lisa

2012-01-01

This study investigated the effects of crowding combined with mood on working memory performance among college students. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web…

Designing of RF ion source and the power sources system

International Nuclear Information System (INIS)

Rusdiyanto.

1978-01-01

An RF ion source prototype is being developed for the particle accelerator at the Gama Research Centre. Supply of the gas is fed into the plasma chamber by means of neadle valve system. Magnetic field strength of about 500 gauss is applied to the system to improve the ionization efficiency. Components and spare parts of the RF ion source are made based on locally available materials and are discussed in this report. (author)

Reducing the risk from radioactive sources

International Nuclear Information System (INIS)

MacKenzie, C.

2006-01-01

Each year the IAEA receives reports of serious injuries or deaths due to misuse or accidents involving sealed radioactive sources. Sealed radioactive sources are used widely in medicine, industry, and agriculture - by doctors to treat cancer, by radiographers to check welds in pipelines, or by specialists to irradiate food to prevent it from spoiling, for example. If these sources are lost or improperly discarded, a serious accident may result. In addition, the security of sealed sources has become a growing concern, particularly the potential that such a source could be used as a radioactive dispersal device or 'dirty bomb'. Preventing the loss or theft of sealed radioactive sources reduces both the risk of accidents and the risk that such sources could become an instrument of misuse. In most countries, radioactive materials and activities that produce radiation are regulated. Those working with sealed radioactive sources are required not just to have proper credentials, but also the needed training and support to deal with unexpected circumstances that may arise when a source is used. Despite these measures, accidents involving sealed sources continue to be reported to the IAEA. Among its many activities to improve the safety and security of sealed sources, the IAEA has been investigating the root causes of major accidents since the 1980s and publishing the findings so that others can learn from them. This information needs to be in the hands of those whose actions and decisions can reduce accidents by preventing a lost source from making it's way into scrap metal. The IAEA has also developed an international catalogue of sealed radioactive sources, and provides assistance to countries to safely contain sources no longer in use. To raise awareness, a Sealed Radioactive Sources Toolkit was issued that focuses on the long-term issues in safely and securely managing radioactive sealed sources. The target audiences are government agencies, radioactive sealed source

Spallation Neutron Source (SNS)

Data.gov (United States)

Federal Laboratory Consortium — The SNS at Oak Ridge National Laboratory is a next-generation spallation neutron source for neutron scattering that is currently the most powerful neutron source in...

2011 NATA - Emissions Sources

Data.gov (United States)

U.S. Environmental Protection Agency — This dataset includes all emissions sources that were modeled in the 2011 National Air Toxics Assessment (NATA), inlcluding point, nonpoint, and mobile sources, and...

EV-GHG Mobile Source

Data.gov (United States)

U.S. Environmental Protection Agency — The EV-GHG Mobile Source Data asset contains measured mobile source GHG emissions summary compliance information on light-duty vehicles, by model, for certification...

Laser ion sources

Energy Technology Data Exchange (ETDEWEB)

Bykovskij, Yu

1979-02-01

The characteristics a laser source of multiply-ionized ions are described with regard to the interaction of laser radiation and matter, ion energy spectrum, angular ion distribution. The amount of multiple-ionization ions is evaluated. Out of laser source applications a laser injector of multiple-ionization ions and nuclei, laser mass spectrometry, laser X-ray microradiography, and a laser neutron generators are described.

Radioisotopic heat source

Science.gov (United States)

Jones, G.J.; Selle, J.E.; Teaney, P.E.

1975-09-30

Disclosed is a radioisotopic heat source and method for a long life electrical generator. The source includes plutonium dioxide shards and yttrium or hafnium in a container of tantalum-tungsten-hafnium alloy, all being in a nickel alloy outer container, and subjected to heat treatment of from about 1570$sup 0$F to about 1720$sup 0$F for about one h. (auth)

Offsite source recovery project - ten years of sealed source recovery and disposal

Energy Technology Data Exchange (ETDEWEB)

Whitworth, Julia Rose [Los Alamos National Laboratory; Pearson, Mike [Los Alamos National Laboratory; Witkowski, Ioana [Los Alamos National Laboratory; Wald - Hopkins, Mark [Los Alamos National Laboratory; Cuthbertson, A [NNSA

2010-01-01

The Global Threat Reduction Initiative's (GTRI) Offsite Source Recovery Project (OSRP) has been recovering excess and unwanted radioactive sealed sources for ten years. In January 2009, GTRI announced that the project had recovered 20,000 sealed radioactive sources (this number has since increased to more than 23,000). This project grew out of early efforts at Los Alamos National Laboratory (LANL) to recover and disposition excess Plutonium-239 (Pu-239) sealed sources that were distributed in the 1960s and 1970s under the Atoms for Peace Program. Decades later, these sources began to exceed their special form certifications or fall out of regular use. As OSRP has collected and stored sealed sources, initially using 'No Path Forward' waste exemptions for storage within the Department of Energy (DOE) complex, it has consistently worked to create disposal pathways for the material it has recovered. The project was initially restricted to recovering sealed sources that would meet the definition of Greater-than-Class-C (GTCC) low-level radioactive waste, assisting DOE in meeting its obligations under the Low-level Radioactive Waste Policy Act Amendments (PL 99-240) to provide disposal for this type of waste. After being transferred from DOE-Environmental Management (EM) to the U.S. National Nuclear Security Administration (NNSA) to be part of GTRI, OSRP's mission was expanded to include not only material that would be classified as GTCC when it became waste, but also any other materials that might constitute a 'national security consideration.' It was recognized at the time that the GTCC category was a waste designation having to do with environmental consequence, rather than the threat posed by deliberate or accidental misuse. The project faces barriers to recovery in many areas, but disposal continues to be one of the more difficult to overcome. This paper discusses OSRP's disposal efforts over its 10-year history. For sources

Performance evaluation of wideband bio-impedance spectroscopy using constant voltage source and constant current source

International Nuclear Information System (INIS)

Mohamadou, Youssoufa; Oh, Tong In; Wi, Hun; Sohal, Harsh; Farooq, Adnan; Woo, Eung Je; McEwan, Alistair Lee

2012-01-01

Current sources are widely used in bio-impedance spectroscopy (BIS) measurement systems to maximize current injection for increased signal to noise while keeping within medical safety specifications. High-performance current sources based on the Howland current pump with optimized impedance converters are able to minimize stray capacitance of the cables and setup. This approach is limited at high frequencies primarily due to the deteriorated output impedance of the constant current source when situated in a real measurement system. For this reason, voltage sources have been suggested, but they require a current sensing resistor, and the SNR reduces at low impedance loads due to the lower current required to maintain constant voltage. In this paper, we compare the performance of a current source-based BIS and a voltage source-based BIS, which use common components. The current source BIS is based on a Howland current pump and generalized impedance converters to maintain a high output impedance of more than 1 MΩ at 2 MHz. The voltage source BIS is based on voltage division between an internal current sensing resistor (R s ) and an external sample. To maintain high SNR, R s is varied so that the source voltage is divided more or less equally. In order to calibrate the systems, we measured the transfer function of the BIS systems with several known resistor and capacitor loads. From this we may estimate the resistance and capacitance of biological tissues using the least-squares method to minimize error between the measured transimpedance excluding the system transfer function and that from an impedance model. When tested on realistic loads including discrete resistors and capacitors, and saline and agar phantoms, the voltage source-based BIS system had a wider bandwidth of 10 Hz to 2.2 MHz with less than 1% deviation from the expected spectra compared to more than 10% with the current source. The voltage source also showed an SNR of at least 60 dB up to 2.2 MHz

New renewable energy sources

International Nuclear Information System (INIS)

2001-06-01

This publication presents a review of the technological, economical and market status in the field of new renewable energy sources. It also deals briefly with the present use of energy, external conditions for new renewable energy sources and prospects for these energy sources in a future energy system. The renewable energy sources treated here are ''new'' in the sense that hydroelectric energy technology is excluded, being fully developed commercially. This publication updates a previous version, which was published in 1996. The main sections are: (1) Introduction, (2) Solar energy, (3) Bio energy, (4) Wind power, (5) Energy from the sea, (6) Hydrogen, (7) Other new renewable energy technologies and (8) New renewable s in the energy system of the future

Electron Beam Ion Sources

CERN Document Server

Zschornacka, G.; Thorn, A.

2013-12-16

Electron beam ion sources (EBISs) are ion sources that work based on the principle of electron impact ionization, allowing the production of very highly charged ions. The ions produced can be extracted as a DC ion beam as well as ion pulses of different time structures. In comparison to most of the other known ion sources, EBISs feature ion beams with very good beam emittances and a low energy spread. Furthermore, EBISs are excellent sources of photons (X-rays, ultraviolet, extreme ultraviolet, visible light) from highly charged ions. This chapter gives an overview of EBIS physics, the principle of operation, and the known technical solutions. Using examples, the performance of EBISs as well as their applications in various fields of basic research, technology and medicine are discussed.

Practical open source software for libraries

CERN Document Server

Engard, Nicole

2010-01-01

Open source refers to an application whose source code is made available for use or modification as users see fit. This means libraries gain more flexibility and freedom than with software purchased with license restrictions. Both the open source community and the library world live by the same rules and principles. Practical Open Source Software for Libraries explains the facts and dispels myths about open source. Chapters introduce librarians to open source and what it means for libraries. The reader is provided with links to a toolbox full of freely available open source products to use in

Visualizing spikes in source-space

DEFF Research Database (Denmark)

Beniczky, Sándor; Duez, Lene; Scherg, Michael

2016-01-01

OBJECTIVE: Reviewing magnetoencephalography (MEG) recordings is time-consuming: signals from the 306 MEG-sensors are typically reviewed divided into six arrays of 51 sensors each, thus browsing each recording six times in order to evaluate all signals. A novel method of reconstructing the MEG...... signals in source-space was developed using a source-montage of 29 brain-regions and two spatial components to remove magnetocardiographic (MKG) artefacts. Our objective was to evaluate the accuracy of reviewing MEG in source-space. METHODS: In 60 consecutive patients with epilepsy, we prospectively...... evaluated the accuracy of reviewing the MEG signals in source-space as compared to the classical method of reviewing them in sensor-space. RESULTS: All 46 spike-clusters identified in sensor-space were also identified in source-space. Two additional spike-clusters were identified in source-space. As 29...

The Advanced Neutron Source liquid deuterium cold source

International Nuclear Information System (INIS)

Lucas, A.T.

1995-08-01

The Advanced Neutron Source will employ two cold sources to moderate neutrons to low energy (<10 meV). The cold neutrons produced are then passed through beam guides to various experiment stations. Each cold source moderator is a sphere of 410-mm internal diameter. The moderator material is liquid deuterium flowing at a rate of 1 kg/s and maintained at subcooled temperatures at all points of the circuit, to prevent boiling. Nuclear beat deposited within the liquid deuterium and its containment structure totals more than 30 kW. All of this heat is removed by the liquid deuterium, which raises its temperature by 5 K. The liquid prime mover is a cryogenic circulator that is situated in the return leg of the flow loop. This arrangement minimizes the heat added to the liquid between the heat exchanger and the moderator vessel, allowing the moderator to be operated at the minimum practical temperature. This report describes the latest thinking at the time of project termination. It also includes the status of various systems at that time and outlines anticipated directions in which the design would have progressed. In this regard, some detail differences between this report and official design documents reflect ideas that were not approved at the time of closure but are considered noteworthy

Interaction in Distance Education Environments: A Trend Analysis

Science.gov (United States)

Karatas, Serçin; Yilmaz, Ayse Bagriacik; Dikmen, Cemal Hakan; Ermis, Ugur Ferhat; Gürbüz, Onur

2017-01-01

The aim of this study is to determine the trend concerning interaction in distance education between the years 2011 and 2015. According to this aim, 544 articles in the databases of EBSCO, Scopus, and Web of Science were examined. The examination has been conducted on the basis of various variables including year, country, number of authors,…

The Citation Landscape of Scholarly Literature in LGBT Studies: A Snapshot for Subject Librarians

Science.gov (United States)

Antell, Karen

2012-01-01

This paper reports the results of a citation analysis of the scholarly literature of LGBT Studies. EBSCO's LGBT Life database was used to gather a sample of 4,321 citations from core scholarly journals in the field of LGBT Studies, covering the time period 1974 to 2010. The analysis reveals that, although LGBT Studies as an area of scholarship…

High-current negative-ion sources for pulsed spallation neutron sources: LBNL workshop, October 1994

International Nuclear Information System (INIS)

Alonso, J.R.

1995-09-01

The neutron scattering community has endorsed the need for a high-power (1 to 5 MW) accelerator-driven source of neutrons for materials research. Properly configured, the accelerator could produce very short (sub-microsecond) bursts of cold neutrons, said time structure offering advantages over the continuous flux from a reactor. The recent cancellation of the ANS reactor project has increased the urgency to develop a comprehensive strategy based on the best technological scenarios. Studies to date have built on the experience from ISIS (the 160 kW source in the UK), and call for a high-current (approx. 100 mA peak) H- source-linac combination injecting into one or more accumulator rings in which beam may be further accelerated. The I to 5 GeV proton beam is extracted in a single turn and brought to the target-moderator stations. The high current, high duty-factor, high brightness and high reliability required of the ion source present a very large challenge to the ion source community. The Workshop reported on here, held in Berkeley in October 1994, analyzed in detail the source requirements for proposed accelerator scenarios, the present performance capabilities of different H- source technologies, and identified necessary R ampersand D efforts to bridge the gap

Reference Sources in Chemistry

OpenAIRE

Sthapit, Dilip Man

1995-01-01

Information plays an important role in the development of every field. Therefore a brief knowledge regarding information sources is necessary to function in any field. There are many information sources about scientific and technical subjects. In this context there are many reference sources in Chemistry too. Chemistry is one important part of the science which deals with the study of the composition of substances and the chemical changes that they undergo. The purpose of this report is...

Lunar neutron source function

International Nuclear Information System (INIS)

Kornblum, J.J.

1974-01-01

The search for a quantitative neutron source function for the lunar surface region is justified because it contributes to our understanding of the history of the lunar surface and of nuclear process occurring on the moon since its formation. A knowledge of the neutron source function and neutron flux distribution is important for the interpretation of many experimental measurements. This dissertation uses the available pertinent experimental measurements together with theoretical calculations to obtain an estimate of the lunar neutron source function below 15 MeV. Based upon reasonable assumptions a lunar neutron source function having adjustable parameters is assumed for neutrons below 15 MeV. The lunar neutron source function is composed of several components resulting from the action of cosmic rays with lunar material. A comparison with previous neutron calculations is made and significant differences are discussed. Application of the results to the problem of lunar soil histories is examined using the statistical model for soil development proposed by Fireman. The conclusion is drawn that the moon is losing mass

Optically pumped terahertz sources

Institute of Scientific and Technical Information of China (English)

ZHONG Kai; SHI Wei; XU DeGang; LIU PengXiang; WANG YuYe; MEI JiaLin; YAN Chao; FU ShiJie; YAO JianQuan

2017-01-01

High-power terahertz (THz) generation in the frequency range of0.1-10 THz has been a fast-developing research area ever since the beginning of the THz boom two decades ago,enabling new technological breakthroughs in spectroscopy,communication,imaging,etc.By using optical (laser) pumping methods with near-or mid-infrared (IR) lasers,flexible and practical THz sources covering the whole THz range can be realized to overcome the shortage of electronic THz sources and now they are playing important roles in THz science and technology.This paper overviews various optically pumped THz sources,including femtosecond laser based ultrafast broadband THz generation,monochromatic widely tunable THz generation,single-mode on-chip THz source from photomixing,and the traditional powerful THz gas lasers.Full descriptions from basic principles to the latest progress are presented and their advantages and disadvantages are discussed as well.It is expected that this review gives a comprehensive reference to researchers in this area and additionally helps newcomers to quickly gain understanding of optically pumped THz sources.

Source Similarity and Social Media Health Messages: Extending Construal Level Theory to Message Sources.

Science.gov (United States)

Young, Rachel

2015-09-01

Social media users post messages about health goals and behaviors to online social networks. Compared with more traditional sources of health communication such as physicians or health journalists, peer sources are likely to be perceived as more socially close or similar, which influences how messages are processed. This experimental study uses construal level theory of psychological distance to predict how mediated health messages from peers influence health-related cognition and behavioral intention. Participants were exposed to source cues that identified peer sources as being either highly attitudinally and demographically similar to or different from participants. As predicted by construal level theory, participants who perceived sources of social media health messages as highly similar listed a greater proportion of beliefs about the feasibility of health behaviors and a greater proportion of negative beliefs, while participants who perceived sources as more dissimilar listed a greater proportion of positive beliefs about the health behaviors. Results of the study could be useful in determining how health messages from peers could encourage individuals to set realistic health goals.

Negative ion sources for tandem accelerator

International Nuclear Information System (INIS)

Minehara, Eisuke

1980-08-01

Four kinds of negative ion sources (direct extraction Duoplasmatron ion source, radial extraction Penniing ion source, lithium charge exchange ion source and Middleton-type sputter ion source) have been installed in the JAERI tandem accelerator. The ion sources can generate many negative ions ranging from Hydrogen to Uranium with the exception of Ne, Ar, Kr, Xe and Rn. Discussions presented in this report include mechanisms of negative ion formation, electron affinity and stability of negative ions, performance of the ion sources and materials used for negative ion production. Finally, the author will discuss difficult problems to be overcome in order to get any negative ion sufficiently. (author)

Learning models for multi-source integration

Energy Technology Data Exchange (ETDEWEB)

Tejada, S.; Knoblock, C.A.; Minton, S. [Univ. of Southern California/ISI, Marina del Rey, CA (United States)

1996-12-31

Because of the growing number of information sources available through the internet there are many cases in which information needed to solve a problem or answer a question is spread across several information sources. For example, when given two sources, one about comic books and the other about super heroes, you might want to ask the question {open_quotes}Is Spiderman a Marvel Super Hero?{close_quotes} This query accesses both sources; therefore, it is necessary to have information about the relationships of the data within each source and between sources to properly access and integrate the data retrieved. The SIMS information broker captures this type of information in the form of a model. All the information sources map into the model providing the user a single interface to multiple sources.

Convolutive Blind Source Separation Methods

DEFF Research Database (Denmark)

Pedersen, Michael Syskind; Larsen, Jan; Kjems, Ulrik

2008-01-01

During the past decades, much attention has been given to the separation of mixed sources, in particular for the blind case where both the sources and the mixing process are unknown and only recordings of the mixtures are available. In several situations it is desirable to recover all sources from...... the recorded mixtures, or at least to segregate a particular source. Furthermore, it may be useful to identify the mixing process itself to reveal information about the physical mixing system. In some simple mixing models each recording consists of a sum of differently weighted source signals. However, in many...... real-world applications, such as in acoustics, the mixing process is more complex. In such systems, the mixtures are weighted and delayed, and each source contributes to the sum with multiple delays corresponding to the multiple paths by which an acoustic signal propagates to a microphone...

Characterization of strong (241)Am sources.

Science.gov (United States)

Vesterlund, Anna; Chernikova, Dina; Cartemo, Petty; Axell, Kåre; Nordlund, Anders; Skarnemark, Gunnar; Ekberg, Christian; Ramebäck, Henrik

2015-05-01

Gamma ray spectra of strong (241)Am sources may reveal information about the source composition as there may be other radioactive nuclides such as progeny and radioactive impurities present. In this work the possibility to use gamma spectrometry to identify inherent signatures in (241)Am sources in order to differentiate sources from each other, is investigated. The studied signatures are age, i.e. time passed since last chemical separation, and presence of impurities. The spectra of some sources show a number of Doppler broadened peaks in the spectrum which indicate the presence of nuclear reactions on light elements within the sources. The results show that the investigated sources can be differentiated between by age and/or presence of impurities. These spectral features would be useful information in a national nuclear forensics library (NNFL) in cases when the visual information on the source, e.g. the source number, is unavailable. Copyright © 2015 Elsevier Ltd. All rights reserved.

Sealed source peer review plan

International Nuclear Information System (INIS)

Feldman, Alexander; Leonard, Lee; Burns, Ron

2009-01-01

Sealed sources are known quantities of radioactive materials that have been encapsulated in quantities that produce known radiation fields. Sealed sources have multiple uses ranging from instrument calibration sources to sources that produce radiation fields for experimental applications. The Off-Site Source Recovery (OSR) Project at Los Alamos National Laboratory (LANL), created in 1999, under the direction of the Waste Management Division of the U.S. Department of Energy (DOE) Albuquerque has been assigned the responsibility to recover and manage excess and unwanted radioactive sealed sources from the public and private sector. LANL intends to ship drums containing qualified sealed sources to the Waste Isolation Pilot Plant (WIPP) for disposal. Prior to shipping, these drums must be characterized with respect to radiological content and other parameters. The U. S. Environmental Protection Agency (EPA) requires that ten radionulcides be quantified and reported for every container of waste to be disposed in the WIPP. The methods traditionally approved by the EPA include non-destructive assay (NDA) in accordance with Appendix A of the Contact-Handled Transuranic Waste Acceptance Criteria for the Waste Isolation Pilot Plant (DOE, 2002) (CH WAC). However, because of the nature and pedigree of historical records for sealed sources and the technical infeasibility of performing NDA on these sources, LANL proposes to characterize the content of these waste drums using qualified existing radiological data in lieu of direct measurement. This plan describes the process and documentation requirements for the use of the peer review process to qualify existing data for sealed radiological sources in lieu of perfonning radioassay. The peer review process will be performed in accordance with criteria provided in 40 CFR (section) 194.22 which specifies the use of the NUREG 1297 guidelines. The plan defines the management approach, resources, schedule, and technical requirements

BERKELEY: Light Source anniversary

International Nuclear Information System (INIS)

Anon.

1994-01-01

The staff of the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory has been too busy to celebrate the first anniversary of the facility's transition from a US Department of Energy construction project to operating third-generation synchrotron radiation source. Based on a 1.5-GeV, low-emittance electron storage ring that accommodates up to ten insertion-device radiation sources optimized primarily for the soft X-ray and vacuum ultra-violet regions of the spectrum, the ALS has completed

BERKELEY: Light Source anniversary

Energy Technology Data Exchange (ETDEWEB)

Anon.

1994-10-15

The staff of the Advanced Light Source (ALS) at the Lawrence Berkeley Laboratory has been too busy to celebrate the first anniversary of the facility's transition from a US Department of Energy construction project to operating third-generation synchrotron radiation source. Based on a 1.5-GeV, low-emittance electron storage ring that accommodates up to ten insertion-device radiation sources optimized primarily for the soft X-ray and vacuum ultra-violet regions of the spectrum, the ALS has completed.

Categorization of radiation sources

International Nuclear Information System (INIS)

Antonova, M.

2000-01-01

Through one-parameter (factor) analysis it is proved a hypothesis that the value of a radiation source (RS) activity of an application correlates with the category (the rank) given to it by the IAEA categorization although it is based on other parameters of the RS applications (practices like devices with radiation sources in industry, science, medicine and agriculture). The principles of the new IAEA categorization, taking into account the potential harm the sources may cause and the necessary regulatory control, are described. (author)

Investigating scintillometer source areas

Science.gov (United States)

Perelet, A. O.; Ward, H. C.; Pardyjak, E.

2017-12-01

Scintillometry is an indirect ground-based method for measuring line-averaged surface heat and moisture fluxes on length scales of 0.5 - 10 km. These length scales are relevant to urban and other complex areas where setting up traditional instrumentation like eddy covariance is logistically difficult. In order to take full advantage of scintillometry, a better understanding of the flux source area is needed. The source area for a scintillometer is typically calculated as a convolution of point sources along the path. A weighting function is then applied along the path to compensate for a total signal contribution that is biased towards the center of the beam path, and decreasing near the beam ends. While this method of calculating the source area provides an estimate of the contribution of the total flux along the beam, there are still questions regarding the physical meaning of the weighted source area. These questions are addressed using data from an idealized experiment near the Salt Lake City International Airport in northern Utah, U.S.A. The site is a flat agricultural area consisting of two different land uses. This simple heterogeneity in the land use facilitates hypothesis testing related to source areas. Measurements were made with a two wavelength scintillometer system spanning 740 m along with three standard open-path infrared gas analyzer-based eddy-covariance stations along the beam path. This configuration allows for direct observations of fluxes along the beam and comparisons to the scintillometer average. The scintillometer system employed measures the refractive index structure parameter of air for two wavelengths of electromagnetic radiation, 880 μm and 1.86 cm to simultaneously estimate path-averaged heat and moisture fluxes, respectively. Meteorological structure parameters (CT2, Cq2, and CTq) as well as surface fluxes are compared for various amounts of source area overlap between eddy covariance and scintillometry. Additionally, surface

Reactor Neutron Sources

International Nuclear Information System (INIS)

Aksenov, V.L.

1994-01-01

The present status and the prospects for development of reactor neutron sources for neutron scattering research in the world are considered. The fields of application of neutron scattering relative to synchrotron radiation, the creation stages of reactors (steady state and pulsed) and their position in comparison with spallation neutron sources at present and in the foreseen future are discussed. (author). 15 refs.; 8 figs.; 3 tabs

Microwave Ion Source and Beam Injection for an Accelerator-driven Neutron Source

International Nuclear Information System (INIS)

Vainionpaa, J.H.; Gough, R.; Hoff, M.; Kwan, J.W.; Ludewigt, B.A.; Regis, M.J.; Wallig, J.G.; Wells, R.

2007-01-01

An over-dense microwave driven ion source capable of producing deuterium (or hydrogen) beams at 100-200 mA/cm2 and with atomic fraction >90 percent was designed and tested with an electrostatic low energy beam transport section (LEBT). This ion source was incorporated into the design of an Accelerator Driven Neutron Source (ADNS). The other key components in the ADNS include a 6 MeV RFQ accelerator, a beam bending and scanning system, and a deuterium gas target. In this design a 40 mA D+ beam is produced from a 6 mm diameter aperture using a 60 kV extraction voltage. The LEBT section consists of 5 electrodes arranged to form 2 Einzel lenses that focus the beam into the RFQ entrance. To create the ECR condition, 2 induction coils are used to create ∼ 875 Gauss on axis inside the source chamber. To prevent HV breakdown in the LEBT a magnetic field clamp is necessary to minimize the field in this region. Matching of the microwave power from the waveguide to the plasma is done by an autotuner. We observed significant improvement of the beam quality after installing a boron nitride liner inside the ion source. The measured emittance data are compared with PBGUNS simulations

Microwave Ion Source and Beam Injection for an Accelerator-Driven Neutron Source

International Nuclear Information System (INIS)

Vainionpaa, J.H.; Gough, R.; Hoff, M.; Kwan, J.W.; Ludewigt, B.A.; Regis, M.J.; Wallig, J.G.; Wells, R.

2007-01-01

An over-dense microwave driven ion source capable of producing deuterium (or hydrogen) beams at 100-200 mA/cm 2 and with atomic fraction > 90% was designed and tested with an electrostatic low energy beam transport section (LEBT). This ion source was incorporated into the design of an Accelerator Driven Neutron Source (ADNS). The other key components in the ADNS include a 6 MeV RFQ accelerator, a beam bending and scanning system, and a deuterium gas target. In this design a 40 mA D + beam is produced from a 6 mm diameter aperture using a 60 kV extraction voltage. The LEBT section consists of 5 electrodes arranged to form 2 Einzel lenses that focus the beam into the RFQ entrance. To create the ECR condition, 2 induction coils are used to create ∼ 875 Gauss on axis inside the source chamber. To prevent HV breakdown in the LEBT a magnetic field clamp is necessary to minimize the field in this region. Matching of the microwave power from the waveguide to the plasma is done by an autotuner. They observed significant improvement of the beam quality after installing a boron nitride liner inside the ion source. The measured emittance data are compared with PBGUNS simulations

Mean energy polarized neutron source

International Nuclear Information System (INIS)

Aleshin, V.A.; Zaika, N.I.; Kolotyj, V.V.; Prokopenko, V.S.; Semenov, V.S.

1988-01-01

Physical bases and realization scheme of a pulsed source of polarized neutrons with the energy of up to 75 MeV are described. The source comprises polarized deuteron source, transport line, low-energy ion and axial injector to the accelerator, U-240 isochronous cyclotron, targets for polarized neutron production, accelerated deuteron transport line and flight bases. The pulsed source of fast neutrons with the energy of up to 75 MeV can provide for highly polarized neutron beams with the intensity by 2-3 orders higher than in the most perfect source of this range which allows one to perform various experiments with high efficiency and energy resolution. 9 refs.; 1 fig

Impedance Source Power Electronic Converters

DEFF Research Database (Denmark)

Liu, Yushan; Abu-Rub, Haitham; Ge, Baoming

Impedance Source Power Electronic Converters brings together state of the art knowledge and cutting edge techniques in various stages of research related to the ever more popular impedance source converters/inverters. Significant research efforts are underway to develop commercially viable...... and technically feasible, efficient and reliable power converters for renewable energy, electric transportation and for various industrial applications. This book provides a detailed understanding of the concepts, designs, controls, and application demonstrations of the impedance source converters/inverters. Key...... features: Comprehensive analysis of the impedance source converter/inverter topologies, including typical topologies and derived topologies. Fully explains the design and control techniques of impedance source converters/inverters, including hardware design and control parameter design for corresponding...

Incidents with hazardous radiation sources

International Nuclear Information System (INIS)

Schoenhacker, Stefan

2016-01-01

Incidents with hazardous radiation sources can occur in any country, even those without nuclear facilities. Preparedness for such incidents is supposed to fulfill globally agreed minimum standards. Incidents are categorized in incidents with licensed handling of radiation sources as for material testing, transport accidents of hazardous radiation sources, incidents with radionuclide batteries, incidents with satellites containing radioactive inventory, incidents wit not licensed handling of illegally acquired hazardous radiation sources. The emergency planning in Austria includes a differentiation according to the consequences: incidents with release of radioactive materials resulting in restricted contamination, incidents with release of radioactive materials resulting in local contamination, and incidents with the hazard of e@nhanced exposure due to the radiation source.

Tuned sources of submillimetre radiation

International Nuclear Information System (INIS)

Berezhnyj, V.L.

1981-01-01

The main present directions of development of sources of frequency coherent tuned radiation of electromagnetic waves in the submillimeter range: nonlinear mixing of different frequencies; semiconductor lasers; molecular lasers with optical pumping; relativistic electron beams in a magnetic field as submillimeter radiation sources; submillimeter radiation sources on the basis of SHF classical electrovacuum devices - are considered. The designs of generator systems and their specifications are presented. The main parameters of electromagnetic radiation of different sources, such as: power, stability, frequency, tuning range - are presented. The methods of improving sources and electromagnetic radiation parameters are proposed. The examples of possible applications of submillimeter radiation in different spheres of science and technology are given [ru

A review of polarized ion sources

International Nuclear Information System (INIS)

Schmor, P.W.

1995-06-01

The two main types of polarized ion sources in use on accelerators today are the Atomic Beam Polarized Ion Source (ABIS) source and the Optically Pumped Polarized Ion Source (OPPIS). Both types can provide beams of nuclearly polarized light ions which are either positively or negatively charged. Heavy ion polarized ion sources for accelerators are being developed. (author). 35 refs., 1 tab

Cloud Sourcing – Next Generation Outsourcing?

OpenAIRE

Muhic, Mirella; Johansson, Björn

2014-01-01

Although Cloud Sourcing has been around for some time it could be questioned what actually is known about it. This paper presents a literature review on the specific question if Cloud Sourcing could be seen as the next generation of outsourcing. The reason for doing this is that from an initial sourcing study we found that the sourcing decisions seems to go in the direction of outsourcing as a service which could be described as Cloud Sourcing. Whereas some are convinced that Cloud Sourcing r...

Spectrometers for compact neutron sources

Science.gov (United States)

Voigt, J.; Böhm, S.; Dabruck, J. P.; Rücker, U.; Gutberlet, T.; Brückel, T.

2018-03-01

We discuss the potential for neutron spectrometers at novel accelerator driven compact neutron sources. Such a High Brilliance Source (HBS) relies on low energy nuclear reactions, which enable cryogenic moderators in very close proximity to the target and neutron optics at comparably short distances from the moderator compared to existing sources. While the first effect aims at increasing the phase space density of a moderator, the second allows the extraction of a large phase space volume, which is typically requested for spectrometer applications. We find that competitive spectrometers can be realized if (a) the neutron production rate can be synchronized with the experiment repetition rate and (b) the emission characteristics of the moderator can be matched to the phase space requirements of the experiment. MCNP simulations for protons or deuterons on a Beryllium target with a suitable target/moderator design yield a source brightness, from which we calculate the sample fluxes by phase space considerations for different types of spectrometers. These match closely the figures of todays spectrometers at medium flux sources. Hence we conclude that compact neutron sources might be a viable option for next generation neutron sources.

Engaging with culturally and linguistically diverse communities to reduce the impact of depression and anxiety: a narrative review.

Science.gov (United States)

Baker, Amy E Z; Procter, Nicholas G; Ferguson, Monika S

2016-07-01

Culturally and linguistically diverse (CALD) communities in Australia face significant challenges in terms of reducing barriers to information and support for depression and anxiety. Increased stigma surrounding mental ill-health in some cultures and related concerns about trust and confidentiality all impact upon timely access to information, services and support for consumers and carers from CALD backgrounds. For health services, there is a need to understand how to better engage CALD communities in mental healthcare. The objective of this narrative review was to identify examples of evidence-based, best practice for what works effectively for engaging with CALD communities to reduce the impact of depression and anxiety. In January 2014, we searched Academic Search Premier, CINAHL, Health-Source Consumer Edition, PsycARTICLES, PsycINFO (all databases within the EbscoHost platform) and PubMed for peer-reviewed articles published between 1994 and 2014. The search revealed a total of 706 records contained within the EbscoHost platform and 689 records in PubMed; 15 matched the inclusion criteria. Six key themes were identified: (i) setting the scene for engagement; (ii) cultural values and preferences; (iii) language considerations; (iv) 'engagers' in the therapeutic process; (v) opening out engagement to include others; and (vi) engaging through the use of technology and alternative mediums. The literature obtained provides a small body of evidence regarding approaches to engaging CALD communities, with findings highlighting the importance of processes which are tailored to the CALD community of interest and which take into account different cultural explanatory models of mental ill-health. Review findings are also discussed within the framework of intersectionality, in which broader structural inequalities and power imbalances - in areas such as gender and social class - collectively impact on help-seeking and mental health outcomes. This review supports further

Musicians have better memory than nonmusicians: A meta-analysis

Science.gov (United States)

Altoè, Gianmarco; Carretti, Barbara; Grassi, Massimo

2017-01-01

Background Several studies have found that musicians perform better than nonmusicians in memory tasks, but this is not always the case, and the strength of this apparent advantage is unknown. Here, we conducted a meta-analysis with the aim of clarifying whether musicians perform better than nonmusicians in memory tasks. Methods Education Source; PEP (WEB)—Psychoanalytic Electronic Publishing; Psychology and Behavioral Science (EBSCO); PsycINFO (Ovid); PubMed; ScienceDirect—AllBooks Content (Elsevier API); SCOPUS (Elsevier API); SocINDEX with Full Text (EBSCO) and Google Scholar were searched for eligible studies. The selected studies involved two groups of participants: young adult musicians and nonmusicians. All the studies included memory tasks (loading long-term, short-term or working memory) that contained tonal, verbal or visuospatial stimuli. Three meta-analyses were run separately for long-term memory, short-term memory and working memory. Results We collected 29 studies, including 53 memory tasks. The results showed that musicians performed better than nonmusicians in terms of long-term memory, g = .29, 95% CI (.08–.51), short-term memory, g = .57, 95% CI (.41–.73), and working memory, g = .56, 95% CI (.33–.80). To further explore the data, we included a moderator (the type of stimulus presented, i.e., tonal, verbal or visuospatial), which was found to influence the effect size for short-term and working memory, but not for long-term memory. In terms of short-term and working memory, the musicians’ advantage was large with tonal stimuli, moderate with verbal stimuli, and small or null with visuospatial stimuli. Conclusions The three meta-analyses revealed a small effect size for long-term memory, and a medium effect size for short-term and working memory, suggesting that musicians perform better than nonmusicians in memory tasks. Moreover, the effect of the moderator suggested that, the type of stimuli influences this advantage. PMID:29049416

Global Sourcing and Firm Selection

DEFF Research Database (Denmark)

Kohler, Wilhelm; Smolka, Marcel

2014-01-01

We analyze the sourcing strategies of firms active in the Spanish manufacturing sector. We show that firms that select strategies of vertical integration and of foreign sourcing ex post tend to have been more productive, ex ante, than other firms.......We analyze the sourcing strategies of firms active in the Spanish manufacturing sector. We show that firms that select strategies of vertical integration and of foreign sourcing ex post tend to have been more productive, ex ante, than other firms....

Dioxin emissions and sources

International Nuclear Information System (INIS)

1994-01-01

The papers presented at the seminar discussed dioxin emissions and sources, dioxin pollution of soils, waste water and sewage sludge, stocktaking of emission sources, and exposure and risk analyses for dioxin and other pollutants. (EF) [de

Electron cyclotron resonance (ECR) ion sources

International Nuclear Information System (INIS)

Jongen, Y.

1984-05-01

Starting with the pioneering work of R. Geller and his group in Grenoble (France), at least 14 ECR sources have been built and tested during the last five years. Most of those sources have been extremely successful, providing intense, stable and reliable beams of highly charged ions for cyclotron injection or atomic physics research. However, some of the operational features of those sources disagreed with commonly accepted theories on ECR source operation. To explain the observed behavior of actual sources, it was found necessary to refine some of the crude ideas we had about ECR sources. Some of those new propositions are explained, and used to make some extrapolations on the possible future developments in ECR sources

Asymmetric Joint Source-Channel Coding for Correlated Sources with Blind HMM Estimation at the Receiver

Directory of Open Access Journals (Sweden)

Ser Javier Del

2005-01-01

Full Text Available We consider the case of two correlated sources, and . The correlation between them has memory, and it is modelled by a hidden Markov chain. The paper studies the problem of reliable communication of the information sent by the source over an additive white Gaussian noise (AWGN channel when the output of the other source is available as side information at the receiver. We assume that the receiver has no a priori knowledge of the correlation statistics between the sources. In particular, we propose the use of a turbo code for joint source-channel coding of the source . The joint decoder uses an iterative scheme where the unknown parameters of the correlation model are estimated jointly within the decoding process. It is shown that reliable communication is possible at signal-to-noise ratios close to the theoretical limits set by the combination of Shannon and Slepian-Wolf theorems.

Determining the sources of fine-grained sediment using the Sediment Source Assessment Tool (Sed_SAT)

Science.gov (United States)

Gorman Sanisaca, Lillian E.; Gellis, Allen C.; Lorenz, David L.

2017-07-27

A sound understanding of sources contributing to instream sediment flux in a watershed is important when developing total maximum daily load (TMDL) management strategies designed to reduce suspended sediment in streams. Sediment fingerprinting and sediment budget approaches are two techniques that, when used jointly, can qualify and quantify the major sources of sediment in a given watershed. The sediment fingerprinting approach uses trace element concentrations from samples in known potential source areas to determine a clear signature of each potential source. A mixing model is then used to determine the relative source contribution to the target suspended sediment samples.The computational steps required to apportion sediment for each target sample are quite involved and time intensive, a problem the Sediment Source Assessment Tool (Sed_SAT) addresses. Sed_SAT is a user-friendly statistical model that guides the user through the necessary steps in order to quantify the relative contributions of sediment sources in a given watershed. The model is written using the statistical software R (R Core Team, 2016b) and utilizes Microsoft Access® as a user interface but requires no prior knowledge of R or Microsoft Access® to successfully run the model successfully. Sed_SAT identifies outliers, corrects for differences in size and organic content in the source samples relative to the target samples, evaluates the conservative behavior of tracers used in fingerprinting by applying a “Bracket Test,” identifies tracers with the highest discriminatory power, and provides robust error analysis through a Monte Carlo simulation following the mixing model. Quantifying sediment source contributions using the sediment fingerprinting approach provides local, State, and Federal land management agencies with important information needed to implement effective strategies to reduce sediment. Sed_SAT is designed to assist these agencies in applying the sediment fingerprinting

The Business Information Services: Old-Line Online Moves to the Web.

Science.gov (United States)

O'Leary, Mick

1997-01-01

Although the availability of free information on the World Wide Web has placed traditional, fee-based proprietary online services on the defensive, most major online business services are now on the Web. Highlights several business information providers: Profound, NewsNet and ProQuest Direct, Dow Jones and Wall Street Journal Interactive Edition,…

Classroom Resiliency--A Comparison of Navajo Elementary Students' Perceptions of Their Classroom Environment

Science.gov (United States)

Piechowski, Alta Begay

2011-01-01

The purpose of this study was to determine if there was a gender difference in how students perceived their classroom environment on the Navajo Nation public school. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be…

Pantechnik new superconducting ion source: PantechniK Indian Superconducting Ion Source

International Nuclear Information System (INIS)

Gaubert, G.; Bieth, C.; Bougy, W.; Brionne, N.; Donzel, X.; Leroy, R.; Sineau, A.; Vallerand, C.; Villari, A. C. C.; Thuillier, T.

2012-01-01

The new ECR ion source PantechniK Indian Superconducting Ion Source (PKISIS) was recently commissioned at Pantechnik. Three superconducting coils generate the axial magnetic field configuration, while the radial magnetic field is done with the multi-layer permanent magnets. Special care was devoted to the design of the hexapolar structure, allowing a maximum magnetic field of 1.32 T at the wall of the 82 mm diameter plasma chamber. The three superconducting coils using low temperature superconducting wires are cooled by a single double stage cryo-cooler (4.2 K). Cryogen-free technology is used, providing reliability and easy maintenance at low cost. The maximum installed RF power (18.0 GHz) is of 2 kW. Metallic beams can be produced with an oven (T max = 1400 deg. C) installed with an angle of 5 deg. with respect to the source axis or a sputtering system, mounted on the axis of the source. The beam extraction system is constituted of three electrodes in accel-decel configuration. The new source of Pantechnik is conceived for reaching optimum performances at 18 GHz RF frequencies. PKISIS magnetic fields are 2.1 T axial B inj and 1.32 T radial field in the wall, variable B min with an independent coil and a large and opened extraction region. Moreover, PKISIS integrates modern design concepts, like RF direct injection (2 kW availability), dc-bias moving disk, out-of-axis oven and axial sputtering facility for metal beams. Finally, PKISIS is also conceived in order to operate in a high-voltage platform with minor power consumption.

Treatment planning source assessment

International Nuclear Information System (INIS)

Calzetta Larrieu, O.; Blaumann, H.; Longhino, J.

2000-01-01

The reactor RA-6 NCT system was improved during the last year mainly in two aspects: the facility itself getting lower contamination factors and using better measurements techniques to obtain lower uncertainties in its characterization. In this job we show the different steps to get the source to be used in the treatment planning code representing the NCT facility. The first one was to compare the dosimetry in a water phantom between the calculation using the entire facility including core, filter and shields and a surface source at the end of the beam. The second one was to transform this particle by particle source in a distribution one regarding the minimum spatial, energy and angular resolution to get similar results. Finally we compare calculation and experimental values with and without the water phantom to adjust the distribution source. The results are discussed. (author)

Safe management of spent radiation source

International Nuclear Information System (INIS)

Kosako, Toshiso; Sugiura, Nobuyuki; Valdezco, E.M.; Choi, Kwang-Sub

2003-01-01

Presented are 8 investigation reports concerning the safe management of spent radiation source (SRS) during the current 2 years. Four reports from Japan are: Scheme for SRS management (approach and present status of the SRS management and consideration toward solving problems); Current International Atomic Energy Agency (IAEA) activities related to safety of radiation sources (Chronology of action plan development, Outline of revised action plan, and Asian regional activities); Current status of SRS management in Japan (Regulation system, Obligations of licensed users, Regulatory system on sealed sources, Status in the incidents on sources occurred, Incident of source loss, and Incidents of orphan sources); and SRS management system in Japan (Current status of using of sealed sources, collection system of SRS-Japan Radioisotope Association (JRIA) services, and Disposal of SRS). Four reports from the Asian countries also concern the current statuses of SRS management in the Philippine (Radioactive waste sources, Waste management strategies, Conditioning of Ra sources, Ra project action plan, as low as reasonably achievable (ALARA) program, Dose assessment, Regulations on radioactive waste, Action plan on the safety and security of sources, IAEA Regional Demonstration Centers, and sitting studies for a near surface disposal facility); Thailand (Current status of using sealed sources, Inventory of SRS, and Current topics of SRS management); Indonesia (Principles of management of radiation sources, Legislative framework of SRS management practices, Regulatory on SRS, management of sealed SRS, management hurdles, and reported incidents); and Korea (Regulatory frame work, Collection systems of SRS, Radioisotope waste generation, Radiation exposure incident, and Scrap monitoring system). (N.I.)

Confusion-limited extragalactic source survey at 4.755 GHz. I. Source list and areal distributions

International Nuclear Information System (INIS)

Ledden, J.E.; Broderick, J.J.; Condon, J.J.; Brown, R.L.

1980-01-01

A confusion-limited 4.755-GHz survey covering 0.00 956 sr between right ascensions 07/sup h/05/sup m/ and 18/sup h/ near declination +35 0 has been made with the NRAO 91-m telescope. The survey found 237 sources and is complete above 15 mJy. Source counts between 15 and 100 mJy were obtained directly. The P(D) distribution was used to determine the number counts between 0.5 and 13.2 mJy, to search for anisotropy in the density of faint extragalactic sources, and to set a 99%-confidence upper limit of 1.83 mK to the rms temperature fluctuation of the 2.7-K cosmic microwave background on angular scales smaller than 7.3 arcmin. The discrete-source density, normalized to the static Euclidean slope, falls off sufficiently rapidly below 100 mJy that no new population of faint flat-spectrum sources is required to explain the 4.755-GHz source counts

Design parameters and source terms: Volume 3, Source terms

International Nuclear Information System (INIS)

1987-10-01

The Design Parameters and Source Terms Document was prepared in accordance with DOE request and to provide data for the environmental impact study to be performed in the future for the Deaf Smith County, Texas site for a nuclear waste repository in salt. This document updates a previous unpublished report by Stearns Catalytic Corporation (SCC), entitled ''Design Parameters and Source Terms for a Two-Phase Repository in Salt,'' 1985, to the level of the Site Characterization Plan - Conceptual Design Report. The previous unpublished SCC Study identifies the data needs for the Environmental Assessment effort for seven possible Salt Repository sites. 11 refs., 9 tabs

Calibrate the aerial surveying instrument by the limited surface source and the single point source that replace the unlimited surface source

International Nuclear Information System (INIS)

Lu Cunheng

1999-01-01

It is described that the calculating formula and surveying result is found on the basis of the stacking principle of gamma ray and the feature of hexagonal surface source when the limited surface source replaces the unlimited surface source to calibrate the aerial survey instrument on the ground, and that it is found in the light of the exchanged principle of the gamma ray when the single point source replaces the unlimited surface source to calibrate aerial surveying instrument in the air. Meanwhile through the theoretical analysis, the receiving rate of the crystal bottom and side surfaces is calculated when aerial surveying instrument receives gamma ray. The mathematical expression of the gamma ray decaying following height according to the Jinge function regularity is got. According to this regularity, the absorbing coefficient that air absorbs the gamma ray and the detective efficiency coefficient of the crystal is calculated based on the ground and air measuring value of the bottom surface receiving count rate (derived from total receiving count rate of the bottom and side surface). Finally, according to the measuring value, it is proved that imitating the change of total receiving gamma ray exposure rate of the bottom and side surfaces with this regularity in a certain high area is feasible

Open source community organization

CSIR Research Space (South Africa)

Molefe, Onkgopotse M

2009-05-01

Full Text Available Open Source communities (OSCs), sometimes referred to as virtual or online communities play a significant role in terms of the contribution they continue to make in producing user-friendly Open Source Software (OSS) solutions. Many projects have...

Procedures for calibration of brachytherapy sources

International Nuclear Information System (INIS)

Alfonso Laguardia, R.; Alonso Samper, J.L.; Morales Lopez, J.L.; Saez Nunez, D.G.

1997-01-01

Brachytherapy source strength verification is a responsibility of the user of these source, in fact of the Medical Physicists in charge of this issue in a Radiotherapy Service. The calibration procedures in the users conditions are shown. Specifics methods for source strength determination are recommended, both for High Dose Rate (HDR) sources with Remote Afterloading equipment and for Low Dose Rate sources. The The results of the calibration of HDR Remote After loaders are indicated

Spallation source neutron target systems

International Nuclear Information System (INIS)

Russell, G.; Brown, R.; Collier, M.; Donahue, J.

1996-01-01

This is the final report for a two-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project sought to design a next-generation spallation source neutron target system for the Manuel Lujan, Jr., Neutron Scattering Center (LANSCE) at Los Alamos. It has been recognized for some time that new advanced neutron sources are needed in the US if the country is to maintain a competitive position in several important scientific and technological areas. A recent DOE panel concluded that the proposed Advanced Neutron Source (a nuclear reactor at Oak Ridge National Laboratory) and a high-power pulsed spallation source are both needed in the near future. One of the most technically challenging designs for a spallation source is the target station itself and, more specifically, the target-moderator-reflector arrangement. Los Alamos has demonstrated capabilities in designing, building, and operating high-power spallation-neutron-source target stations. Most of the new design ideas proposed worldwide for target system design for the next generation pulsed spallation source have either been conceived and implemented at LANSCE or proposed by LANSCE target system designers. These concepts include split targets, flux-trap moderators, back scattering and composite moderators, and composite reflectors

Photon acceleration-based radiation sources

International Nuclear Information System (INIS)

Hoffman, J. R.; Muggli, P.; Katsouleas, T.; Mori, W. B.; Joshi, C.

1999-01-01

The acceleration and deceleration of photons in a plasma provides the means for a series of new radiation sources. Previous work on a DC to AC Radiation Converter (DARC source) has shown variable acceleration of photons having zero frequency (i.e., an electrostatic field) to between 6 and 100 GHz (1-3). These sources all had poor guiding characteristics resulting in poor power coupling from the source to the load. Continuing research has identified a novel way to integrate the DARC source into a waveguide. The so called ''pin structure'' uses stainless steel pins inserted through the narrow side of an X band waveguide to form the electrostatic field pattern (k≠0, ω=0). The pins are spaced such that the absorption band resulting from this additional periodic structure is outside of the X band range (8-12 GHz), in which the normal waveguide characteristics are left unchanged. The power of this X band source is predicted theoretically to scale quadratically with the pin bias voltage as -800 W/(kV) 2 and have a pulse width of -1 ns. Cold tests and experimental results are presented. Applications for a high power, short pulse radiation source extends to the areas of landmine detection, improved radar resolution, and experimental investigations of molecular systems

Negative hydrogen ion sources for accelerators

Energy Technology Data Exchange (ETDEWEB)

Moehs, D.P.; /Fermilab; Peters, J.; /DESY; Sherman, J.; /Los Alamos

2005-08-01

A variety of H{sup -} ion sources are in use at accelerator laboratories around the world. A list of these ion sources includes surface plasma sources with magnetron, Penning and surface converter geometries as well as magnetic-multipole volume sources with and without cesium. Just as varied is the means of igniting and maintaining magnetically confined plasmas. Hot and cold cathodes, radio frequency, and microwave power are all in use, as well as electron tandem source ignition. The extraction systems of accelerator H{sup -} ion sources are highly specialized utilizing magnetic and electric fields in their low energy beam transport systems to produce direct current, as well as pulsed and/or chopped beams with a variety of time structures. Within this paper, specific ion sources utilized at accelerator laboratories shall be reviewed along with the physics of surface and volume H{sup -} production in regard to source emittance. Current research trends including aperture modeling, thermal modeling, surface conditioning, and laser diagnostics will also be discussed.

Cardiomagnetic source imaging

OpenAIRE

Pesola, Katja

2000-01-01

Magnetocardiographic (MCG) source imaging has received increasing interest in recent years. With a high enough localization accuracy of the current sources in the heart, valuable information can be provided, e.g., for the pre-ablative evaluation of arrhythmia patients. Furthermore, preliminary studies indicate that ischemic areas, i.e. areas which are suffering from lack of oxygen, and infarcted regions could be localized from multichannel MCG recordings. In this thesis, the accuracy of cardi...

X-ray sources

International Nuclear Information System (INIS)

Masswig, I.

1986-01-01

The tkb market survey comparatively evaluates the X-ray sources and replacement tubes for stationary equipment currently available on the German market. It lists the equipment parameters of 235 commercially available X-ray sources and their replacement tubes and gives the criteria for purchase decisions. The survey has been completed with December 1985, and offers good information concerning medical and technical aspects as well as those of safety and maintenance. (orig.) [de

Impedance source power electronic converters

CERN Document Server

Liu, Yushan; Ge, Baoming; Blaabjerg, Frede; Ellabban, Omar; Loh, Poh Chiang

2016-01-01

Impedance Source Power Electronic Converters brings together state of the art knowledge and cutting edge techniques in various stages of research related to the ever more popular impedance source converters/inverters. Significant research efforts are underway to develop commercially viable and technically feasible, efficient and reliable power converters for renewable energy, electric transportation and for various industrial applications. This book provides a detailed understanding of the concepts, designs, controls, and application demonstrations of the impedance source converters/inverters. Key features: Comprehensive analysis of the impedance source converter/inverter topologies, including typical topologies and derived topologies. Fully explains the design and control techniques of impedance source converters/inverters, including hardware design and control parameter design for corresponding control methods. Presents the latest power conversion solutions that aim to advance the role of pow...

Orphan sources

International Nuclear Information System (INIS)

Pust, R.; Urbancik, L.

2008-01-01

The presentation describes how the stable detection systems (hereinafter referred to as S DS ) have contributed to reveal the uncontrolled sources of ionizing radiation on the territory of the State Office for Nuclear Safety (SONS) Brno Regional Centre (RC Brno). It also describes the emergencies which were solved by or in which the workers from the Brno. Regional Centre participated in. The contribution is divided into the following chapters: A. SDS systems installed on the territory of SONS RC Brno; B. Selected unusual emergencies; C. Comments to individual emergencies; D. Aspects of SDS operation in term of their users; E. Aspects of SDS operation and related activities in term of radiation protection; F. Current state of orphan sources. (authors)

C-188 Co-60 sources installation and source rack loading optimization processes in a gamma irradiation facility

Energy Technology Data Exchange (ETDEWEB)

Santos, Paulo de S.; Vasquez, Pablo A.S., E-mail: psantos@ipen.br, E-mail: pavsalva@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

2017-11-01

Since 2004, the Multipurpose Gamma Facility at the Nuclear and Energy Research Institute has been providing services on radiation processing for disinfection and sterilization of health care and disposable medical products as well to support research studies on modification of physical, chemical and biological properties of several materials. Recently, there was an increment in irradiation of the Cultural Heritages. This facility uses C-188 double-encapsulated radioactive Cobalt-60 sources known as pencils from manufactures outside of country. The activity of the cobalt sources decays into a stable nickel isotope with a half-life around 5.27 years, which means a loss of 12.3% annually. Then, additional pencils of Cobalt-60 are added periodically to the source rack to maintain the required capacity or installed activity of the facility. The manufacturer makes shipping of the radioactive sources inside a high density container type B(U) , by sea. This one involves many administrative, transport and radiation safety procedures. Once in the facility, the container is opened inside a deep pool water to remove the pencils. The required source geometry of the facility is obtained by loading these source pencils into predetermined diagram or positions in source modules and distributing these modules over the source rack of the facility. The dose variation can be reduced placing the higher activity source pencils near the periphery of the source rack. In this work are presented the procedures for perform the boiling leaching tests applied to the container, the Cobalt-60 sources installation, the loading processes and the source rack loading optimization. (author)

Sources of Financial Sociability

DEFF Research Database (Denmark)

Thompson, Grahame

2011-01-01

This article investigates the sources of sociability in modern financial systems as a prelude to assessing the prospects for financial regulation. Three sources are identified: sociality dependent upon contract, upon relational interdependency, and upon the operation of will and passion. Each of ...

Source apportionment of PM2.5 in North India using source-oriented air quality models

International Nuclear Information System (INIS)

Guo, Hao; Kota, Sri Harsha; Sahu, Shovan Kumar; Hu, Jianlin; Ying, Qi; Gao, Aifang; Zhang, Hongliang

2017-01-01

In recent years, severe pollution events were observed frequently in India especially at its capital, New Delhi. However, limited studies have been conducted to understand the sources to high pollutant concentrations for designing effective control strategies. In this work, source-oriented versions of the Community Multi-scale Air Quality (CMAQ) model with Emissions Database for Global Atmospheric Research (EDGAR) were applied to quantify the contributions of eight source types (energy, industry, residential, on-road, off-road, agriculture, open burning and dust) to fine particulate matter (PM 2.5 ) and its components including primary PM (PPM) and secondary inorganic aerosol (SIA) i.e. sulfate, nitrate and ammonium ions, in Delhi and three surrounding cities, Chandigarh, Lucknow and Jaipur in 2015. PPM mass is dominated by industry and residential activities (>60%). Energy (∼39%) and industry (∼45%) sectors contribute significantly to PPM at south of Delhi, which reach a maximum of 200 μg/m 3 during winter. Unlike PPM, SIA concentrations from different sources are more heterogeneous. High SIA concentrations (∼25 μg/m 3 ) at south Delhi and central Uttar Pradesh were mainly attributed to energy, industry and residential sectors. Agriculture is more important for SIA than PPM and contributions of on-road and open burning to SIA are also higher than to PPM. Residential sector contributes highest to total PM 2.5 (∼80 μg/m 3 ), followed by industry (∼70 μg/m 3 ) in North India. Energy and agriculture contribute ∼25 μg/m 3 and ∼16 μg/m 3 to total PM 2.5 , while SOA contributes <5 μg/m 3 . In Delhi, industry and residential activities contribute to 80% of total PM 2.5 . - Highlights: • Sources of PM 2.5 in North India were quantified by source-oriented CMAQ. • Industrial/residential activities are the dominating sources (60–70%) for PPM. • Energy/agriculture are the most important sources (30–40%) for SIA. • Strong seasonal

An ideal sealed source life-cycle

International Nuclear Information System (INIS)

Tompkins, Joseph Andrew

2009-01-01

In the last 40 years, barriers to compliant and timely disposition of radioactive sealed sources have become apparent. The story starts with the explosive growth of nuclear gauging technologies in the 1960s. Dozens of companies in the US manufactured sources and many more created nuclear solutions to industrial gauging problems. Today they do not yet know how many Cat 1, 2, or 3 sources there are in the US. There are, at minimum, tens of thousands of sources, perhaps hundreds of thousands of sources. Affordable transportation solutions to consolidate all of these sources and disposition pathways for these sources do not exist. The root problem seems to be a lack of necessary regulatory framework that has allowed all of these problems to accumulate with no national plan for solving the problem. In the 1960s, Pu-238 displaced Pu-239 for most neutron and alpha source applications. In the 1970s, the availability of inexpensive Am-241 resulted in a proliferation of low energy gamma sources used in nuclear gauging, well logging, pacemakers, and X-ray fluorescence applications for example. In the 1980s, rapid expansion of worldwide petroleum exploration resulted in the expansion of Am-241 sources into international locations. Improvements of technology and regulation resulted in a change in isotopic distribution as Am-241 made Pu-239 and Pu-238 obsolete. Many early nuclear gauge technologies have been made obsolete as they were replaced by non-nuclear technoogies. With uncertainties in source end of life disposition and increased requirements for sealed source security, nuclear gauging technology is the last choice for modern process engineering gauging solutions. Over the same period, much was learned about licensing LLW disposition facilities as evident by the closure of early disposition facilities like Maxey Flats. The current difficulties in sealed source disposition start with adoption of the NLLW policy act of 1985, which created the state LLW compact system they

Accelerator-driven X-ray Sources

Energy Technology Data Exchange (ETDEWEB)

Nguyen, Dinh Cong [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

2015-11-09

After an introduction which mentions x-ray tubes and storage rings and gives a brief review of special relativity, the subject is treated under the following topics and subtopics: synchrotron radiation (bending magnet radiation, wiggler radiation, undulator radiation, brightness and brilliance definition, synchrotron radiation facilities), x-ray free-electron lasers (linac-driven X-ray FEL, FEL interactions, self-amplified spontaneous emission (SASE), SASE self-seeding, fourth-generation light source facilities), and other X-ray sources (energy recovery linacs, Inverse Compton scattering, laser wakefield accelerator driven X-ray sources. In summary, accelerator-based light sources cover the entire electromagnetic spectrum. Synchrotron radiation (bending magnet, wiggler and undulator radiation) has unique properties that can be tailored to the users’ needs: bending magnet and wiggler radiation is broadband, undulator radiation has narrow spectral lines. X-ray FELs are the brightest coherent X-ray sources with high photon flux, femtosecond pulses, full transverse coherence, partial temporal coherence (SASE), and narrow spectral lines with seeding techniques. New developments in electron accelerators and radiation production can potentially lead to more compact sources of coherent X-rays.

Refurbishing tritium contaminated ion sources

International Nuclear Information System (INIS)

Wright, K.E.; Carnevale, R.H.; McCormack, B.E.; Stevenson, T.; Halle, A. von

1995-01-01

Extended tritium experimentation on TFTR has necessitated refurbishing Neutral Beam Long Pulse Ion Sources (LPIS) which developed operational difficulties, both in the TFTR Test Cell and later, in the NB Source Refurbishment Shop. Shipping contaminated sources off-site for repair was not permissible from a transport and safety perspective. Therefore, the NB source repair facility was upgraded by relocating fixtures, tooling, test apparatus, and three-axis coordinate measuring equipment; purchasing and fabricating fume hoods; installing exhaust vents; and providing a controlled negative pressure environment in the source degreaser/decon area. Appropriate air flow monitors, pressure indicators, tritium detectors and safety alarms were also included. The effectiveness of various decontamination methods was explored while the activation was monitored. Procedures and methods were developed to permit complete disassembly and rebuild of an ion source while continuously exhausting the internal volume to the TFTR Stack to avoid concentrations of tritium from outgassing and minimize personnel exposure. This paper presents upgrades made to the LPIS repair facility, various repair tasks performed, and discusses the effectiveness of the decontamination processes utilized

Effects of Source RDP Models and Near-source Propagation: Implication for Seismic Yield Estimation

Science.gov (United States)

Saikia, C. K.; Helmberger, D. V.; Stead, R. J.; Woods, B. B.

- It has proven difficult to uniquely untangle the source and propagation effects on the observed seismic data from underground nuclear explosions, even when large quantities of near-source, broadband data are available for analysis. This leads to uncertainties in our ability to quantify the nuclear seismic source function and, consequently the accuracy of seismic yield estimates for underground explosions. Extensive deterministic modeling analyses of the seismic data recorded from underground explosions at a variety of test sites have been conducted over the years and the results of these studies suggest that variations in the seismic source characteristics between test sites may be contributing to the observed differences in the magnitude/yield relations applicable at those sites. This contributes to our uncertainty in the determination of seismic yield estimates for explosions at previously uncalibrated test sites. In this paper we review issues involving the relationship of Nevada Test Site (NTS) source scaling laws to those at other sites. The Joint Verification Experiment (JVE) indicates that a magnitude (mb) bias (δmb) exists between the Semipalatinsk test site (STS) in the former Soviet Union (FSU) and the Nevada test site (NTS) in the United States. Generally this δmb is attributed to differential attenuation in the upper-mantle beneath the two test sites. This assumption results in rather large estimates of yield for large mb tunnel shots at Novaya Zemlya. A re-examination of the US testing experiments suggests that this δmb bias can partly be explained by anomalous NTS (Pahute) source characteristics. This interpretation is based on the modeling of US events at a number of test sites. Using a modified Haskell source description, we investigated the influence of the source Reduced Displacement Potential (RDP) parameters ψ ∞ , K and B by fitting short- and long-period data simultaneously, including the near-field body and surface waves. In general

Hybrid ground-source heat pump system with active air source regeneration

International Nuclear Information System (INIS)

Allaerts, K.; Coomans, M.; Salenbien, R.

2015-01-01

Highlights: • A hybrid ground source heat pump system with two separate borefields is modelled. • The maximum underground storage temperature depends on the size of the drycooler. • Drycooler selection curves are given as function of underground storage temperature. • The size of the cold storage is reduced with 47% in the cost optimal configuration. • The cooling seasonal performance factor decreases with reduced storage capacity. - Abstract: Ground-source heat pump systems (GSHP) offer great advantages over traditional heating and cooling installations. However, their applications are limited due to the high initial costs of borehole drilling. One way to avoid these costs is by reducing the size of the borefield, e.g. by combining the system with other renewable energy sources or by using active regeneration to increase the system efficiency. In this paper a hybrid ground-source heat pump system (HGSHP) is analyzed. The borefield is split into a warm part and a cold part, which allows for seasonal thermal-energy storage. Additionally, supplementary drycoolers capture heat during summer and cold during winter. The relationship between the underground storage size and temperature and the drycooler capacity is described, using an office building in Flanders (Belgium) as reference case. Results show that with a HGSHP system a significant borefield size reduction can be achieved without compromising system performance; i.e. for the reference case a reduction of 47% was achieved in the cost-optimal configuration. It is also shown that the cooling seasonal performance factor decreases significantly with underground storage capacity. In addition, the HGSHP can be used to maintain or restore thermal balance in the geothermal source when heating and cooling loads do not match

Item Strength Influences Source Confidence and Alters Source Memory zROC Slopes

Science.gov (United States)

Starns, Jeffrey J.; Ksander, John C.

2016-01-01

Increasing the number of study trials creates a crossover pattern in source memory zROC slopes; that is, the slope is either below or above 1 depending on which source receives stronger learning. This pattern can be produced if additional learning affects memory processes such as the relative contribution of recollection and familiarity to source…