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Sample records for des issues cardiovasculaires

  1. La fréquence cardiaque au repos : Un indicateur pronostique modifiable du risque et des issues cardiovasculaires ?

    PubMed Central

    Arnold, J Malcolm; Fitchett, David H; Howlett, Jonathan G; Lonn, Eva M; Tardif, Jean-Claude

    2008-01-01

    De plus en plus de données probantes tirées d’essais cliniques et d’études épidémiologiques indiquent qu’une fréquence cardiaque élevée au repos est un prédicteur d’événements cliniques. La preuve de sa cause et de son effet direct est limitée car les médicaments courants qui réduisent la fréquence cardiaque (p. ex., les bêtabloquants) ont de multiples mécanismes d’action. Une nouvelle catégorie de médicament, les inhibiteurs If sélectifs, est en cours d’exploration à titre de « pur » médicament réduisant la fréquence cardiaque, ce qui aidera à confirmer s’il existe un lien fortuit entre la fréquence cardiaque élevée et les issues cardiovasculaires. Le présent article analyse les données probantes selon lesquelles une fréquence cardiaque élevée est un facteur de risque cardiovasculaire ainsi que certains essais cliniques courants qui évaluent cette hypothèse.

  2. Dépistage des maladies cardiovasculaires chez des étudiants de l'Université de Douala et influence des activités physiques et sportives

    PubMed Central

    Ewane, Marielle Epacka; Mandengue, Samuel Honoré; Priso, Eugene Belle; Tamba, Stéphane Moumbe; Ahmadou; Fouda, André Bita

    2012-01-01

    Introduction Les maladies cardiovasculaires (MCV) constituent l'une des principales causes de mortalité dans les pays en développement. Le dépistage de ces dernières chez des jeunes est un défi dans la lutte contre leur expansion. Le but de cette étude était de dépister ces maladies au sein d'une population jeunes d’étudiants camerounais. Methodes Deux mille six cent cinquante-huit étudiants de l'Université de Douala (23,6 ± 2,9 ans, sex-ratio H/F = 0,9) ont en Avril - Mai 2011 participé à une campagne de dépistage gratuit du diabète, de l'hypertension artérielle (HTA) et de l'obésité. Ils ont également été soumis à une d'enquête évaluant leur niveau en activités physiques et sportives (APS). Resultats 12,7% des participants avaient une pression artérielle (PA) ≥ 140/90 mmHg, 3,6% étaient obèses et 0,9% avaient une glycémie ≥1,26 g/L. Des corrélations ont été trouvées entre certains facteurs de risque (diabète, hypertension et obésité) et le niveau académique d'une part (r =0,366; p < 0,0001) et le temps passé devant la télévision d'autres part (r = 0,411; p < 0,0001). L‘APS était inversement corrélée à l‘âge (r =-0,015; p < 0,0001) et au temps passé devant la télévision (r = -0,059; p = 0,002). Conclusion La présence des MCV et leurs facteurs de risque mis en évidence dans cette étude réalisée en milieu estudiantin camerounais interpelle à une prévention et une éducation dans la lutte contre ces dernières. PMID:22655111

  3. Morbidité et mortalité hospitalière des maladies cardiovasculaires en milieu tropical: exemple d'un centre hospitalier à Lomé (Togo)

    PubMed Central

    Damorou, Findibe; Baragou, Soodougoua; Pio, Machihuede; Afassinou, Yaovi M; N'da, N'kenon W; Pessinaba, Soulemane; Tchérou, Tchaa; Attiogbé, Halé; Ehlan, Koffi; Goeh-Akue, Edem; Yayehd, Komlavi

    2014-01-01

    Introduction Les maladies cardiovasculaires (MCV) occupent une place importante dans la mortalité en Afrique, situation inquiétante traduisant une transition épidémiologique rapide. La connaissance des groupes nosologiques les plus mortelles devrait aider à l’élaboration de politiques en matière de traitement et de prévention. Méthodes Il's agit d une étude rétrospective du 1er janvier 2006 au 31 décembre 2010, ayant inclus les patients hospitalisés pour une MCV selon la classification Internationale des maladies (CIM-10). Résultats La fréquentation hospitalière pour maladie MCV a augmenté au fil du temps; les maladies hypertensives étaient le premier motif d hospitalisation (66.8%). Les autres pathologies fréquentes étaient la maladie thromboembolique (9.1%), les syndromes coronaires aigus (SCA) (7.3%), l'insuffisance cardiaque (5.5%), les cardiomyopathies (5.3%). La majorité des sujets étaient jeunes (âge moyen: 55.1 ans) et il n'y avait pas de corrélation entre la durée d'hospitalisation et l’âge: r = + 0.024, p = 0.09. La mortalité globale était élevée (11%) et les taux de létalité élevés dans le SCA (27.9%), l'embolie pulmonaire (25%) et la péricardite (25%). Conclusion Les MCV sont responsables d'une hospitalisation croissante dans nos hôpitaux. L'absence d unité de soins intensifs cardiologiques et des méthodes de revascularisation coronaire, le manque de personnels qualifiés associés l'inexistence de sécurité sociale expliquent une mortalité élevée dans nos pays en voie de développement qui sans avoir achevé leur transition démographique entre en pleine transition épidémiologique. PMID:25018812

  4. Facteurs de risque cardiovasculaires au cours du lupus systémique

    PubMed Central

    Harzallah, Amel; Hajji, Mariem; Kaaroud, Hayet; Hamida, Fethi Ben; Abdallah, Taieb Ben

    2015-01-01

    Cette étude a pour objectif d’évaluer la fréquence des facteurs de risque cardiovasculaires au cours du lupus et de préciser leur prévalence. Etude rétrospective portant sur 250 patients ayant un lupus, diagnostiqué selon les critères de l'ACR, hospitalisés entre 1970 et 2013. Les données cliniques et para cliniques ont été recueillies à partir des observations médicales. Il s'agit de 228 femmes et 22 hommes d’âge moyen au diagnostic du lupus de 30, 32 ans (extrêmes: 16-69). La durée moyenne du suivi des patients était de 64 mois (extrêmes: 7 jours- 382mois). Quatre vingt dix patients (36%) étaient hypertendus, 74% avaient une hypercholestérolémie et 22% étaient diabétiques. Pour les autres facteurs de risque cardiovasculaire traditionnels, un âge > 50 ans a été retrouvé dans 40% des cas, le sexe masculin dans 8% des cas, l'obésité dans 76% des cas et le tabagisme dans 11% des cas. Les facteurs de risque surajoutés sont représentés par la présence des anticorps antiphospholipides (47% des cas), la néphropathie lupique (49% des cas), l'insuffisance rénale (42% des cas), la corticothérapie au long cours (74% des cas) et la chronicité de la maladie dans 35% des cas. Les complications cardiovasculaires retrouvées dans notre série étaient: les accidents vasculaires cérébraux (2%) et l'insuffisance coronarienne (5,6%). Devant l'importance du risque cardiovasculaire au cours du lupus, une surveillance rapprochée des facteurs de risque cardio-vasculaires semble primordiale chez les lupiques. PMID:27022427

  5. Epaisseur de l'intima-média carotidienne et facteurs de risque cardio-vasculaires

    PubMed Central

    Herinirina, Nicolas Fanantenana; Rajaonarison, Lova Hasina Ny Ony Narindra; Herijoelison, Andry Roussel; Ahmad, Ahmad

    2015-01-01

    Introduction L’épaisseur intima-média de la carotide commune mesurée à l’échographie est un marqueur de risque cardio-vasculaire. L'objectif de ce travail est d’établir la corrélation entre l’épaisseur de l'intima-média carotidienne commune et les facteurs de risque cardio-vasculaire chez des sujets asymptomatiques. Méthodes Etude transversale descriptive et analytique portant sur 77 sujets de 40 ans et plus chez qui nous avons évalué les facteurs de risque cardio-vasculaire et analysé leur association avec l’épaisseur intima-média carotidienne commune. Résultats L’épaisseur intima-média augmentait avec l’âge. Les hommes avaient une épaisseur intima-média plus marquée que les femmes. L'hypertension artérielle, le diabète et la dyslipidémie sont corrélés à l’épaisseur de l'intima-média contrairement au tabagisme. Conclusion L’âge élevé et le sexe masculin sont les facteurs déterminants de la majoration de l’épaisseur intima-média carotidienne commune surtout si s'ajoutent l'hypertension artérielle, le diabète ou la dyslipidémie. PMID:26327990

  6. Troubles du sommeil, symptômes anxio-dépressifs et risque cardio-vasculaire chez les hypertendus noirs africains: étude transversale de 414 hypertendus suivis en ambulatoire au CHU de Ouagadougou (Burkina Faso)

    PubMed Central

    Yaméogo, Nobila Valentin; Samadoulougou, André; Kagambèga, Larissa Justine; Yaméogo, Aimé Arsène; Ilboudo, Eric; Millogo, Georges; Kologo, Jonas; Toguyeni, Jean Yves; Simporé, Jacques; Zabsonré, Patrice

    2015-01-01

    Introduction Dans le but de déterminer la fréquence des troubles du sommeil, de l'anxiété et de la dépression, et de rechercher l'existence d'une relation entre ces troubles et le risque cardio-vasculaire global chez les hypertendus noirs africains, nous avons réalisé une étude transversale de mai 2010 à mars 2011 à l'unité de consultation externe du service de cardiologie du CHU-Yalgado Ouédraogo de Ouagadougou qui a inclut 414 hypertendus adultes suivis en ambulatoire. Après un examen clinique à la recherche des facteurs de risque cardio-vasculaire, deux auto-questionnaires ont été administrés. Méthodes Le questionnaire de l’«European Sleep Center » pour la recherche des troubles du sommeil et, l’échelle «Hospital Anxiety and Depression Scale » de Zigmond et Snaith pour la recherche de l'anxiété et la dépression. Le diagnostic du syndrome d'apnée du sommeil était clinique et basé sur la présence des 4 symptômes principaux: hypersomnolence diurne, éveils nocturnes fréquents avec nycturie, asthénie matinale avec ou sans céphalées et ronflements importants. Le risque cardio-vasculaire global était calculé grâce à l’équation d'Anderson tirée de l’étude de Framingham. L'analyse des données a été réalisée par le logiciel SPSS version 17. La comparaison des variables a été effectuée grâce au test de Khi 2 pour les variables qualitatives et au test «t» de Student pour les variables quantitatives. Le seuil de signification a été fixé à 5%. Résultats L’échantillon était composé de 414 patients dont 248 femmes (59,9%). L’âge moyen était de 54,6 ± 9,3 ans. Les troubles du sommeil étaient retrouvés dans 72,2% des cas. Ils étaient dominés par l'insomnie (49,2%), le syndrome d'apnée du sommeil (33,5%) et le syndrome des jambes sans repos (25,8%). L'anxiété était retrouvée dans 37,1% des cas et la dépression dans 16,6% des cas. Le risque cardio-vasculaire global était faible dans 21,0%, mod

  7. Evaluation des complications cardiaques chez les hémodialysés chroniques de Dakar

    PubMed Central

    Moustapha, Cissé Mouhamadou; Tall, Lemrabott Ahmed; Maria, Faye; Khodia, Fall; Moustapha, Faye; Fary, Ka El Hadji; Abdou, Niang; Boucar, Diouf

    2016-01-01

    Introduction L’évaluation cardiovasculaire est essentielle en hémodialyse périodique car les affections cardiovasculaires sont la première cause de mortalité chez les hémodialysés chroniques. Nous avons conduit cette étude afin de déterminer la prévalence et le type des différentes complications cardiovasculaires et d'identifier les principaux facteurs de risque cardiovasculaire. Méthodes Il s'agissait d'une étude rétrospective de 4 ans portant sur les dossiers de patients traités au moins 6 mois en hémodialyse et ayant des explorations cardio-vasculaires comportant une radiographie du thorax de face, un électrocardiogramme et une échographie cardiaque. Les données épidémiologiques, cliniques, paracliniques, les aspects évolutifs des complications cardiaques ont été recueillies pour chaque patient retenu. Résultats Trente huit dossiers de patients ont été inclus dans cette étude. L’âge moyen était de 52 ans ± 12,85 et le sex-ratio H/F de 1,53. Les complications cardiovasculaires étaient dominées par l'hypertrophie ventriculaire gauche (71,05%), la maladie coronaire (34,21%), l'insuffisance cardiaque congestive (18,42%), Calcifications vasculaires (5,78%), les troubles du rythme (7.89%), les fuites valvulaires mitrales (44,73%), tricuspidiennes (42,10%) et les accidents vasculaires cérébraux hémorragiques (5,26%). L'incidence moyenne de l'HVG était de 81% chez les patients hypertendus. Au cours de cette étude, 27 patients avaient poursuivi l'hémodialyse et 11 étaient décédés dont 6 de causes cardiovasculaires (54,55%). Conclusion L'hémodialyse est une technique d’épuration qui expose les patients à de multiples complications cardiovasculaires. PMID:27217869

  8. L'obésité en consultation cardiologique à Lomé: prévalence et facteurs de risque cardio-vasculaire associés - étude chez 1200 patients

    PubMed Central

    Pessinaba, Soulemane; Yayehd, Komlavi; Pio, Machiude; Baragou, Réné; Afassinou, Yaovi; Tchérou, Tchaa; Damorou, Findibé

    2012-01-01

    Introduction Introduction: Les objectifs de ce travail étaient de déterminer la fréquence de l'obésité et celle des autres facteurs de risque cardio-vasculaire chez ces patients obèses à Lomé (Togo). Méthodes Il s'est agi d'une étude multicentrique transversale de prévalence. Elle s'est déroulée du 05 septembre 2005 au 04 mars 2006 et a porté sur les malades vus en consultation externe dans 3 services de cardiologie de la commune de Lomé. Ont été inclus dans cette étude les malades ayant un surpoids selon les normes de l'OMS. Résultats Parmi 1200 patients vus en consultations, 779 (64,92%) avaient une surcharge pondérale. L’âge moyen était de 49,53 ± 17,24 ans. L'obésité était plus fréquente chez les femmes (79,49%) que chez les hommes (20,51%). Un antécédent d'obésité familiale (61,8%) était le principal facteur favorisant. Les autres facteurs de risque cardio-vasculaire retrouvés étaient: sédentarité (82% vs50% chez les non obèses), hypertension artérielle (54,8% vs 39,2%), alcool (50,9% vs 43,9%), dyslipidémie (34,5% vs 20%), diabète (30,9% vs 10,7%) et tabac (14,1% vs 20,3%). La différence était statistiquement significative entre les deux groupes. Les principales complications cardiovasculaires observées chez les obèses étaient: l'ischémie myocardique (26,7%), l'hypertrophie ventriculaire gauche (46,4%), la dilatation cavitaire cardiaque (30,1%) et les accidents vasculaires cérébraux (7,1%). Conclusion L'obésité est un problème de santé publique au Togo. Sa prévalence est très élevée et elle est le plus souvent associée aux autres facteurs de risque cardio-vasculaire. Des mesures préventives doivent être mises en jeu pour lutter contre ce facteur de risque. Mots clés: Obésité, prévalence, facteurs de risque. PMID:23133699

  9. Évolution des lignes directrices sur le traitement de la dyslipidémie

    PubMed Central

    John Bosomworth, N.

    2014-01-01

    Résumé Objectif Comprendre comment les nouvelles lignes directrices sur la prise en charge du risque cardiovasculaire publiées par l’American Heart Association et l’American College of Cardiology (AHA-ACC) peuvent être interprétées et utilisées dans le contexte canadien. Sources des données Les lignes directrices de l’AHA-ACC ont été examinées, de même que toutes les références. Des recherches indépendantes dans PubMed ont été effectuées pour inclure l’ajout aux statines d’autres antihyperlipidémiants et l’emploi de calculatrices médicales visant à aider le patient à comprendre. Message principal Les nouvelles lignes directrices de l’AHA-ACC s’appuient sur les meilleures données probantes disponibles actuellement en matière de traitement de la dyslipidémie. Cela inclut le risque cardiovasculaire (CV) sur 10 ans comme seuil thérapeutique au lieu du taux de cholestérol des lipoprotéines de faible densité, de même que l’abandon des cibles thérapeutiques de lipoprotéines de faible densité. On met de plus en plus l’accent sur les interventions alimentaires et l’exercice, avec l’amorce d’un effort pour quantifier l’effet de ces interventions. Les statines constituent la principale intervention pharmacologique, et l’ajout d’autres médicaments pour accentuer la baisse lipidique n’est plus recommandé. En ce qui concerne l’application au Canada, les tables de risque de Framingham sont plus appropriées pour évaluer le risque que les équations de cohortes regroupées utilisées aux États-Unis. Les calculatrices du risque de maladie cardiovasculaire (MCV) devraient contenir de l’information sur l’âge cardiovasculaire et devraient pouvoir illustrer le risque et les interventions de rechange afin d’aider le patient à comprendre et de favoriser la prise de décision éclairée. Conclusion L’attention sur les meilleures données probantes concernant le risque CV peut simplifier le traitement de la

  10. Solving the Issue of Restenosis After Stenting of Intracranial Stenoses: Experience with Two Thin-Strut Drug-Eluting Stents (DES)—Taxus Element™ and Resolute Integrity™

    SciTech Connect

    Kurre, Wiebke Aguilar-Pérez, Marta; Fischer, Sebastian; Arnold, Guy; Schmid, Elisabeth; Bäzner, Hansjörg; Henkes, Hans

    2015-06-15

    PurposeThin-strut, flexible DES are suitable for intracranial stenting and may improve long-term vessel patency. The purpose of this study was to report our experience with two new-generation DES for the treatment of intracranial atherosclerotic disease.Patients and MethodsWe retrospectively reviewed all patients treated with Taxus Element™ or Resolute Integrity™ stent for an intracranial atherosclerotic stenosis between March 2011 and August 2013. Technical success was defined as the ability to deploy the device at the desired location and reduce the degree of stenosis below 50 %. All procedure-related strokes were recorded. Control angiography was scheduled after 6 weeks, 3, 6, and 12 months and yearly thereafter. A luminal narrowing ≥50 % was regarded as a restenosis. Stroke recurrence in the territory of the treated artery was reported.ResultsIn the defined period we treated 101 patients harboring 117 intracranial stenoses. The procedure was successful in 100 (85.5 %) lesions. Procedure-related strokes occurred in 10 (9.9 %) patients with a permanent morbidity in 3 (3.0 %). Follow-up angiography was available for 83 of 100 (83.0 %) successfully treated lesions with an average of 355 days (IQR 153–482 days). Three (3.6 %) asymptomatic restenoses were detected. All occurred after treatment with Resolute Integrity™, none after Taxus Element™ (p = 0.059). New strokes in the territory of the treated artery were encountered in 2 (2.6 %) occasions.ConclusionThin-strut DES improve long-term patency and reduce the risk of subsequent stroke. Differences between devices may exist. Feasibility is comparable to bare-metal balloon-mounted stents and procedure-related strokes occurred within the expected range.

  11. Approche à l’égard des nouveaux anticoagulants oraux en pratique familiale

    PubMed Central

    Douketis, James; Bell, Alan David; Eikelboom, John; Liew, Aaron

    2014-01-01

    Résumé Objectif Comparer les caractéristiques principales des nouveaux anticoagulants oraux (NACO), soit le dabigatran, le rivaroxaban et l’apixaban, et répondre aux questions qui font surface lors de la comparaison de ces agents. Qualité des données Une recherche dans PubMed a été effectuée afin de relever les études cliniques récentes (de janvier 2008 à la semaine 32 de 2013) portant sur l’emploi des NACO pour la prévention des AVC dans les cas de fibrillation auriculaire (FA) et pour le traitement de la thromboembolie veineuse aiguë. Message principal Selon 3 essais d’envergure, tous les NACO sont au moins aussi efficaces que la warfarine dans la prévention des AVC chez les patients atteints d’une FA non valvulaire, et au moins aussi sûrs pour ce qui est du risque de saignement. Des méta-analyses de ces essais ont montré que, comparativement au traitement par la warfarine, les NACO avaient réduit la mortalité totale, la mortalité d’origine cardiovasculaire et les saignements intracrâniens, et était aussi ressortie une tendance vers la réduction des saignements généraux. Du côté pratique, les avantages des NACO par rapport à la warfarine sont : posologie orale fixe uniquotidienne ou biquotidienne sans devoir surveiller la coagulation et peu d’interactions connues ou définies avec d’autres médicaments ou des aliments. Les désavantages potentiels des NACO sont notamment un risque de saignement qui serait accru chez les patients de plus de 75 ans, une hausse des saignements gastro-intestinaux majeurs avec des doses élevées de dabigatran, une hausse des cas de dyspepsie avec le dabigatran, l’absence d’un test de laboratoire de routine visant à mesurer de façon fiable l’effet anticoagulant et l’absence d’antidote pour renverser l’effet anticoagulant. Aucun essai randomisé contrôlé n’a effectué de comparaison directe des NACO, et le choix d’un NACO est influencé par les caract

  12. Il y a des Gens qui Disent que... = "There Are People Who Say that"... beyond Grammatical Accuracy in FL Learners' Writing: Issues of Non-Nativeness

    ERIC Educational Resources Information Center

    Guillot, Marie-Noelle

    2005-01-01

    This paper draws on data used in the pilot application of data-driven pedagogical strategies for dealing with non-nativeness in the writing of advanced FL learners of French to expose attendant practical problems and theoretical issues. The discussion focuses on the question of vagueness in academic writing and involves a three-way comparison of…

  13. Symposium sur l'education des filles. Faits, Problemes, Actions. (Symposium on Girls' Education: Evidence, Issues, Actions. Proceedings). (Washington, DC, May 17-18, 2000).

    ERIC Educational Resources Information Center

    Agency for International Development (IDCA), Washington, DC.

    This symposium highlighted core issues of controversy in girls' education and explored implications for policy and practice. Its evidence-based discussion forum encouraged dialogue, debate, and increased interaction and developed partnerships among academic institutions, nongovernmental organizations, multilateral development agencies, and other…

  14. Apport de l'orientation clinique dans le diagnostic des hypertensions arterielles endocriniennes

    PubMed Central

    El Aziz, Siham; Chadli, Asma; Louda, Fatima; El Ghomari, Hassan; Farouqi, Ahmed

    2014-01-01

    L'hypertension artérielle d'origine endocrinienne représente une cause curable d'hypertension artérielle (HTA), ce qui en justifie le dépistage. Une orientation clinique est souhaitable afin de prescrire les bilans adéquats, notamment dans les pays en voie de développement. L'objectif de notre étude est décrire les aspects cliniques des patients ayant une HTA endocrinienne diagnostiquée au CHU de Casablanca. Méthodes: Il s'agit d'une étude descriptive rétrospective de 2004 à 2011, incluant tout patient ayant une HTA endocrinienne (en dehors des dysthyroïdies) admis en Endocrinologie. Les données concernant les facteurs cliniques, paracliniques et thérapeutiques ont été colligées. Au cours de la période étudiée, 53 cas d'HTA endocrinienne ont été admis, avec une age moyen au diagnostic de 39,3 ans et un sex-ratio F/H de 3,9. Trente patients (56.6%) ont un age ont un âge inférieur à 40 ans. On ne retrouve pas d'hérédité tensionelle chez 88.7% des patients. Les étiologies sont le Syndrome de cushing (41.5%), le phéochromocytome (32%), les adénomes somatotropes (15%) et les hyperaldostéronismes primaire (7.5%). L'HTA est essentiellement de grade un ou deux (69.8%), avec un retentissement cardio-vasculaire chez 11 patients (20.7%). Les patients ayant un SC avaient tous des signes cutanés spécifiques. Il s'agissait de sujets jeunes avec plusieurs facteurs de risque cardiovasculaire. Nous avons retrouvé un amaigrissement chez 37.5% des patients ayant un phéochromocytome avec un indice de masse corporel moyen de 20 kg/m2. L'HTA était permanente dans 5 cas de phéochromocytomes. Il n'existait pas d'hypokaliémie chez 50% des patients ayant un hyperaldostéronisme. Les signes cliniques des patients ayant une acromégalie étaient francs, avec un age moyen plus élevé de 50 ans. Nous avons noté une régression de l'HTA chez 59% de ces patients après guérison de l'endocrinopathie en cause. Plusieurs signes cliniques peuvent nous

  15. Des Moines.

    ERIC Educational Resources Information Center

    Gore, Deborah, Ed.

    1988-01-01

    This document, intended for elementary students, contains articles and activities designed to acquaint young people with the history of Des Moines, Iowa. The articles are short, and new or difficult words are highlighted and defined for young readers. "The Raccoon River Indian Agency" discusses the archeological exploration of the indian…

  16. Aspects épidémiologiques des accidents vasculaires cérébraux (AVC) aux urgences de l'institut de cardiologie d'Abidjan (ICA)

    PubMed Central

    N'goran, Yves N'da Kouakou; Traore, Fatou; Tano, Micesse; Kramoh, Kouadio Euloge; Kakou, Jean-Baptiste Anzouan; Konin, Christophe; Kakou, Maurice Guikahue

    2015-01-01

    Introduction L'objectif de notre étude était de décrire les caractéristiques sociodémographiques et les Facteurs de Risque cardio-Vasculaires (FRV) des patients admis pour accidents vasculaires cérébraux (AVC) dans un service autre que celui de la neurologie. Méthodes Étude transversale rétrospective sur une période de 2 ans (janv. 2010 et déc. 2011), réalisée aux urgences de l'institut de cardiologie d'Abidjan. Résultats Il s'agissait de 176 adultes avec un âge moyen de 60 ans, une prédominance féminine. Les facteurs de risque majeurs retrouvés étaient l'hypertension artérielle dans 86,4% des cas, le diabète dans 11,4% des cas, le tabagisme dans 2,2% des cas. Les motifs de consultation étaient la perte de connaissance dans 36,4% des cas, l'hémiplégie dans 31,8% des cas, les céphalées dans 17,4% des cas, les vertiges dans 10,9% et les palpitations dans 2,2% des cas. La tension artérielle systolique moyenne était à 174 mmHg, la tension artérielle diastolique moyenne était à 105 mmHg et la pression pulsée moyenne était à 70 mmHg. Les AVC étaient associés à une arythmie complète par fibrillation auriculaire dans 11,4% des cas. Les AVC ischémiques représentaient 84,1%. L’évolution aux urgences a été marquée par un décès dans 17% (30) des cas. Conclusion Les AVC constituent un problème majeur de santé publique. Malgré sa prédominance féminine, ils (AVC) touchaient 44% des hommes dans notre étude lorsqu'on sait qu'en Afrique l'activité sociale repose sur les hommes. Ils restent une pathologie grave par la forte létalité. PMID:26327997

  17. Etude exploratoire des conceptions de la circulation sanguine aupres d'eleves de l'ordre collegial

    NASA Astrophysics Data System (ADS)

    Robitaille, Jean-Marc

    prelevent que les nutriments necessaires. Au second niveau les reponses des eleves de la population indiquent une conception de la dynamique cardio-vasculaire axee d'abord sur le coeur, laissant aux vaisseaux un role passif de canaux. Ces reponses indiquent egalement que la dynamique circulatoire est reduite a une sequence d'etapes ponctuelles sans relation les unes avec les autres. Au troisieme niveau les reponses des eleves de la population font etat d'une conception du controle qui privilegie la satisfaction de besoins locaux, sans relation systemique. Nos resultats suggerent que les eleves de notre echantillon affichent une plus grande concordance avec l'expert pour les questions du premier niveau (70%) que pour les niveaux II (54%) et III (50%). Notre analyse des donnees revele que l'accord avec l'expert est eleve lorsque la questions touchent la description des structures et la definition de leurs roles et plus faible lorsque les questions touchent la dynamique et le controle. Il existerait donc un niveau de formulation qui correspond a la description de structures et un autre niveau qui recoupe toute la dynamique de la circulation et son controle. Du point de vue didactique lanalyse des donnees suggere que nous ne retrouvons pas une correspondance entre les niveaux de formulation didactique et les conceptions des eleves. (Abstract shortened by UMI.)

  18. Restauration fonctionnelle du rachis : effet du niveau initial de douleur sur les performances des sujets lombalgiques chroniques

    PubMed Central

    Caby, Isabelle; Olivier, N; Mendelek, F; Kheir, R Bou; Vanvelcenaher, J; Pelayo, P

    2014-01-01

    HISTORIQUE : La lombalgie chronique est une douleur lombaire persistante d’origine multifactorielle. Le niveau de douleur initial reste faiblement utilisé pour analyser et comparer les réponses des patients lombalgiques au programme de reconditionnement. OBJECTIFS : Apprécier et évaluer les réponses des sujets lombalgiques chroniques très douloureux à une prise en charge dynamique et intensive. MÉTHODOLOGIE : 144 sujets atteints de lombalgie chronique ont été inclus dans un programme de restauration fonctionnelle du rachis de 5 semaines. Les sujets ont été classés en deux groupes de niveau de douleur: un groupe atteint de douleur sévère (n = 28) et un groupe atteint de douleur légère à modérée (n = 106). L’ensemble des sujets ont bénéficié d’une prise en charge identique comprenant principalement de la kinésithérapie, de l’ergothérapie, du reconditionnement musculaire et cardio-vasculaire ainsi qu’un suivi psychologique. Les paramètres physiques (flexibilité, force musculaire) et psychologiques (qualité de vie) ont été mesurés avant (T0) et après le programme (T5sem). RÉSULTATS : L’ensemble des performances physiques et fonctionnelles des sujets très douloureux sont moins bonnes et le retentissement de la lombalgie sur la qualité de vie, pour ces mêmes sujets, est majoré à T0. Toutes les différences significatives constatées à T0 entre les deux groupes s’effacent à T5sem. CONCLUSIONS : Les sujets lombalgiques chroniques très douloureux répondent favorablement au programme dynamique et intensif. L’intensité douloureuse de la lombalgie n’aurait pas d’effet sur les réponses au programme. La restauration fonctionnelle du rachis apporterait aux sujets la possibilité de mieux gérer leur douleur quel que soit son niveau. PMID:25299476

  19. Des ballons pour demain

    NASA Astrophysics Data System (ADS)

    Régipa, R.

    A partir d'une théorie sur la détermination des formes et des contraintes globales d'un ballon de révolution, ou s'en rapprochant, une nouvelle famille de ballons a été définie. Les ballons actuels, dits de ``forme naturelle'', sont calculés en général pour une tension circonférencielle nulle. Ainsi, pour une mission donnée, la tension longitudinale et la forme de l'enveloppe sont strictement imposées. Les ballons de la nouvelle génération sont globalement cylindriques et leurs pôles sont réunis par un câble axial, chargé de transmettre une partie des efforts depuis le crochet (pôle inférieur), directement au pôle supérieur. De plus, la zone latérale cylindrique est soumise à un faible champ de tensions circonférencielles. Ainsi, deux paramètres permettent de faire évoluer la distribution des tensions et la forme de l'enveloppe: - la tension du câble de liaison entre pôles (ou la longueur de ce câble) - la tension circonférencielle moyenne désirée (ou le rayon du ballon). On peut donc calculer et réaliser: - soit des ballons de forme adaptée, comme les ballons à fond plat pour le bon fonctionnement des montgolfières infrarouge (projet MIR); - soit des ballons optimisés pour une bonne répartition des contraintes et une meilleure utilisation des matériaux d'enveloppe, pour l'ensemble des programmes stratosphériques. Il s'ensuit une économie sensible des coûts de fabrication, une fiabilité accrue du fonctionnement de ces ballons et une rendement opérationnel bien supérieur, permettant entre autres, d'envisager des vols à très haute altitude en matériaux très légers.

  20. Multicultural Issues.

    ERIC Educational Resources Information Center

    Reid, Charrles; Kampfe, Charlene

    This chapter examines issues related to working with diverse populations with addictions. A brief history of multiculturalism and multicultural counseling is presented. Issues particular to the treatment of people with addictions are examined, as well as prevention and assessment issues. Substance abuse issues among people in the gay male and…

  1. Amputation des quatre membres

    PubMed Central

    Feruzi, Maruis Kitembo; Milindi, Cédrick Sangwa; Zabibu, Mireille Kakinga; Mulefu, Jules Panda; Katombe, Francois Tshilombo

    2014-01-01

    Les auteurs présentent les cas d'amputation des quatre membres réalisée chez trois patients différents. Ce sont des amputations réalisées pour chaque patient au cours d'une seule hospitalisation et en un seul temps opératoire. Deux patients pour gangrène sèche infectée et un pour amputation traumatique des quatre membres. L'amputation d'urgence a été pratiquée en premier temps suivie de remodelage des moignons d'amputation en second temps. L’évolution de tous les patients a été bonne. PMID:25469177

  2. Issues Curriculum.

    ERIC Educational Resources Information Center

    Sando, Joe S.

    A program for teaching techniques of critical thinking on issues concerning American Indians was developed for students at Albuquerque Indian School. It was designed to include not only the students but also their families with learning activities that required consultation in search of answers or understanding. The first issue presented sought to…

  3. Des Vents et des Jets Astrophysiques

    NASA Astrophysics Data System (ADS)

    Sauty, C.

    well expected result from the theory. Although, collimation may be conical, paraboloidal or cylindrical (Part 4), cylindrical collimation is the more likely to occur. The shape of outflows may then be used as a tool to predict physical conditions on the flows or on their source. L'éjection continue de plasma autour d'objets massifs est un phénomène largement répandu en astrophysique, que ce soit sous la forme du vent solaire, de vents stellaires, de jets d'étoiles en formation, de jets stellaires autour d'objets compacts ou de jets extra-galactiques. Cette zoologie diversifiée fait pourtant l'objet d'un commun effort de modélisation. Le but de cette revue est d'abord de présenter qualitativement le développement, depuis leur origine, des diverses théories de vents (Partie 1) et l'inter disciplinarité dans ce domaine. Il s'agit d'une énumération, plus ou moins exhaustive, des idées proposées pour expliquer l'accélération et la morphologie des vents et des jets, accompagnée d'une présentation sommaire des aspects observationnels. Cette partie s'abstient de tout aspect faisant appel au formalisme mathématique. Ces écoulements peuvent être décrits, au moins partiellement, en résolvant les équations magnétohydrodynamiques, axisymétriques et stationnaires. Ce formalisme, à la base de la plupart des théories, est exposé dans la Partie 2. Il permet d'introduire quantitativement les intégrales premières qu'un tel système possède. Ces dernières sont amenées à jouer un rôle important dans la compréhension des phénomènes d'accélération ou de collimation, en particulier le taux de perte de masse, le taux de perte de moment angulaire ou l'énergie du rotateur magnétique. La difficulté de modélisation réside dans l'existence de points critiques, propres aux équations non linéaires, qu'il faut franchir. La nature physique et la localisation de ces points critiques fait l'objet d'un débat important car ils sont la clef de voute de la r

  4. Recognition of Langue des Signes Quebecoise in Eastern Canada

    ERIC Educational Resources Information Center

    Parisot, Anne-Marie; Rinfret, Julie

    2012-01-01

    This article presents a portrait of two community-level and legal efforts in Canada to obtain official recognition of ASL and LSQ (Langue des signes quebecoise), both of which are recognized as official languages by the Canadian Association of the Deaf (CAD). In order to situate this issue in the Canadian linguistic context, the authors first…

  5. Family Issues

    MedlinePlus

    ... not mean that everyone gets along all the time. Conflicts are a part of family life. Many things can lead to conflict, such as illness, disability, addiction, job loss, school problems, and marital issues. Listening to ...

  6. Choice of DES: is there a difference?

    PubMed Central

    Kaul, U; Bhatia, V

    2009-01-01

    Restenosis after percutaneous coronary interventions has been a major limitation of this otherwise very well-accepted method of coronary revascularisation. Coronary stents work by scaffolding the intimal flaps and preventing elastic recoil, which was a major problem after balloon angioplasty. The neointimal growth response to stenting contributes significantly to the restenotic process. Randomised studies comparing coronary artery bypass surgery with coronary stenting especially in multivessel disease clearly highlighted this problem. The problem has been greater in magnitude in special subgroups: diabetics, patients with small vessels (≤2.5 mm in diameter), long segments of disease (≥20 mm in length), etc. These limitations of Bare metal stents have been addressed by drug-eluting stents (DESs). Third-generation stents with bioabsorbable polymers like the Biolimus releasing Biomatrix stent have already become available in Europe and parts of Asia. A longer follow-up will prove their long-term safety vis-à-vis first-generation DES. The polymer-free stent with capability of using more than one drug, though very attractive, needs larger multicentric studies before gaining wider acceptance. The fully bioabsorbable stent is yet another promising concept. The feasibility has already been demonstrated, and finer refinements are under way. The future of newer DES thus is very promising, and most of the issues related to first-generation DES are at the threshold of being solved.

  7. Medicolegal issues.

    PubMed

    Torres, Abel; Konda, Sailesh; Nino, Tanya; de Golian, Emily

    2016-01-01

    The legal landscape in dermatology is constantly evolving. Dermatologists should nurture strong physician-patient relationships with proper informed consent and stay abreast of legal issues as they pertain to today's practice of medicine. Medicolegal issues that have risen to the forefront include wrong-site surgery, delegation of procedures to nonphysician operators, and compounding of medications. Additionally, although the marriage of health care and technology has facilitated our practice of medicine, it has opened doors to new medicolegal pitfalls associated with the use of electronic medical records, teledermatology, and even social media. This contribution will highlight some of the common medicolegal issues in dermatology along with recommendations to minimize exposure to litigation. PMID:26773630

  8. Unaddressed Issues

    ERIC Educational Resources Information Center

    Rochester, J. Martin

    2005-01-01

    Walter Parker's January article, "Teaching Against Idiocy," raises important and fascinating issues relating to the proper role and function of the K-12 social studies classroom. Although J. Martin Rochester, the author of this article, agrees with his basic premise that schools obviously have an obligation to help promote citizenship education,…

  9. Sanskrit Issue.

    ERIC Educational Resources Information Center

    Miller, Barbara Stoler, Ed.

    1971-01-01

    This issue of "Mahfil" is devoted to Sanskrit literature and contains a note on Sanskrit pronunciation and selections of Sanskrit literature. It also contains articles analyzing and discussing various aspects of the literature, including "Sanskrit Rhetoric and Poetic,""The Creative Role of the Goddess Vac in the 'Rgveda,'""Vedic and Epic…

  10. Bond Issues.

    ERIC Educational Resources Information Center

    Pollack, Rachel H.

    2000-01-01

    Notes trends toward increased borrowing by colleges and universities and offers guidelines for institutions that are considering issuing bonds to raise money for capital projects. Discussion covers advantages of using bond financing, how use of bonds impacts on traditional fund raising, other cautions and concerns, and some troubling aspects of…

  11. Reticulation des fibres lignocellulosiques

    NASA Astrophysics Data System (ADS)

    Landrevy, Christel

    Pour faire face à la crise économique la conception de papier à valeur ajoutée est développée par les industries papetières. Le but de se projet est l'amélioration des techniques actuelles de réticulation des fibres lignocellulosiques de la pâte à papier visant à produire un papier plus résistant. En effet, lors des réactions de réticulation traditionnelles, de nombreuses liaisons intra-fibres se forment ce qui affecte négativement l'amélioration anticipée des propriétés physiques du papier ou du matériau produit. Pour éviter la formation de ces liaisons intra-fibres, un greffage sur les fibres de groupements ne pouvant pas réagir entre eux est nécessaire. La réticulation des fibres par une réaction de « click chemistry » appelée cycloaddition de Huisgen entre un azide et un alcyne vrai, catalysée par du cuivre (CuAAC) a été l'une des solutions trouvée pour remédier à ce problème. De plus, une adaptation de cette réaction en milieux aqueux pourrait favoriser son utilisation en milieu industriel. L'étude que nous désirons entreprendre lors de ce projet vise à optimiser la réaction de CuAAC et les réactions intermédiaires (propargylation, tosylation et azidation) sur la pâte kraft, en milieu aqueux. Pour cela, les réactions ont été adaptées en milieu aqueux sur la cellulose microcristalline afin de vérifier sa faisabilité, puis transférée à la pâte kraft et l'influence de différents paramètres comme le temps de réaction ou la quantité de réactifs utilisée a été étudiée. Dans un second temps, une étude des différentes propriétés conférées au papier par les réactions a été réalisée à partir d'une série de tests papetiers optiques et physiques. Mots Clés Click chemistry, Huisgen, CuAAC, propargylation, tosylation, azidation, cellulose, pâte kraft, milieu aqueux, papier.

  12. Environmental Issues are Controversial Issues.

    ERIC Educational Resources Information Center

    Hepburn, Mary Allaire

    The extensive social-scientific interest and continuing relevance of environmental study assure its immediate and long-range importance in the social studies. But the crisis atmosphere surrounding this issue threatens a thoughtful, systematic approach to the subject, and poses the danger of a careless rush to activity. As social studies educators,…

  13. Theoretical Issues

    SciTech Connect

    Marc Vanderhaeghen

    2007-04-01

    The theoretical issues in the interpretation of the precision measurements of the nucleon-to-Delta transition by means of electromagnetic probes are highlighted. The results of these measurements are confronted with the state-of-the-art calculations based on chiral effective-field theories (EFT), lattice QCD, large-Nc relations, perturbative QCD, and QCD-inspired models. The link of the nucleon-to-Delta form factors to generalized parton distributions (GPDs) is also discussed.

  14. [And Sarah Félix created "L 'Eau des Fées" and "La Parfumerie des Fées"].

    PubMed

    Raynal, Cécile

    2015-12-01

    century, the parisian perfumery of Sarah Felix was famous especially for her cosmetic "L'Eau des Fées" ("Water of the Fairies"), a dyeing supposed to give back to the old hair the color of their youth. Sarah Felix, sister of the famous actress Rachel, exercised several jobs before becoming perfumer. At first, she was actress, then she tried ... oyster culture in Normandy ! Abandoning these activities, Sarah Felix became really a businesswoman in Paris. She dedicated herself to perfumery, in particular to "L'Eau des Fées", from 1866. To launch its product, she was associated to competency characters (engineer, pharmacist, physician) and benefited from the protection of the imperial family. A lawsuit between the associates and the 1870 war hindered the company's early days, but "L'Eau des Fées" provided with quality pledges, imposed itself definitely. The "Parfumerie des Fées" completed the range of its cosmetics with creams, powders, etc. Sarah Félix paid attention to present "L'Eau des Fées" as a dye devoid of toxicity. Was it really the case and could il be sold nowadays? These two issues are discussed in the last part. PMID:26827551

  15. Médecine des voyages

    PubMed Central

    Aw, Brian; Boraston, Suni; Botten, David; Cherniwchan, Darin; Fazal, Hyder; Kelton, Timothy; Libman, Michael; Saldanha, Colin; Scappatura, Philip; Stowe, Brian

    2014-01-01

    Résumé Objectif Définir la pratique de la médecine des voyages, présenter les éléments fondamentaux d’une consultation complète préalable aux voyages à des voyageurs internationaux et aider à identifier les patients qu’il vaudrait mieux envoyer en consultation auprès de professionnels de la médecine des voyages. Sources des données Les lignes directrices et les recommandations sur la médecine des voyages et les maladies liées aux voyages publiées par les autorités sanitaires nationales et internationales ont fait l’objet d’un examen. Une recension des ouvrages connexes dans MEDLINE et EMBASE a aussi été effectuée. Message principal La médecine des voyages est une spécialité très dynamique qui se concentre sur les soins préventifs avant un voyage. Une évaluation exhaustive du risque pour chaque voyageur est essentielle pour mesurer avec exactitude les risques particuliers au voyageur, à son itinéraire et à sa destination et pour offrir des conseils sur les interventions les plus appropriées en gestion du risque afin de promouvoir la santé et prévenir les problèmes médicaux indésirables durant le voyage. Des vaccins peuvent aussi être nécessaires et doivent être personnalisés en fonction des antécédents d’immunisation du voyageur, de son itinéraire et du temps qu’il reste avant son départ. Conclusion La santé et la sécurité d’un voyageur dépendent du degré d’expertise du médecin qui offre le counseling préalable à son voyage et les vaccins, au besoin. On recommande à ceux qui donnent des conseils aux voyageurs d’être conscients de l’ampleur de cette responsabilité et de demander si possible une consultation auprès de professionnels de la médecine des voyages pour tous les voyageurs à risque élevé.

  16. Pipeline issues

    NASA Technical Reports Server (NTRS)

    Eisley, Joe T.

    1990-01-01

    The declining pool of graduates, the lack of rigorous preparation in science and mathematics, and the declining interest in science and engineering careers at the precollege level promises a shortage of technically educated personnel at the college level for industry, government, and the universities in the next several decades. The educational process, which starts out with a large number of students at the elementary level, but with an ever smaller number preparing for science and engineering at each more advanced educational level, is in a state of crisis. These pipeline issues, so called because the educational process is likened to a series of ever smaller constrictions in a pipe, were examined in a workshop at the Space Grant Conference and a summary of the presentations and the results of the discussion, and the conclusions of the workshop participants are reported.

  17. Towards a Dynamic DES model

    NASA Astrophysics Data System (ADS)

    Subbareddy, Pramod; Candler, Graham

    2009-11-01

    Hybrid RANS/LES methods are being increasingly used for turbulent flow simulations in complex geometries. Spalart's detached eddy simulation (DES) model is one of the more popular ones. We are interested in examining the behavior of the Spalart-Allmaras (S-A) Detached Eddy Simulation (DES) model in its ``LES mode.'' The role of the near-wall functions present in the equations is analyzed and an explicit analogy between the S-A and a one-equation LES model based on the sub-grid kinetic energy is presented. A dynamic version of the S-A DES model is proposed based on this connection. Validation studies and results from DES and LES applications will be presented and the effect of the proposed modification will be discussed.

  18. Vecteurs Singuliers des Theories des Champs Conformes Minimales

    NASA Astrophysics Data System (ADS)

    Benoit, Louis

    En 1984 Belavin, Polyakov et Zamolodchikov revolutionnent la theorie des champs en explicitant une nouvelle gamme de theories, les theories quantiques des champs bidimensionnelles invariantes sous les transformations conformes. L'algebre des transformations conformes de l'espace-temps presente une caracteristique remarquable: en deux dimensions elle possede un nombre infini de generateurs. Cette propriete impose de telles conditions aux fonctions de correlations qu'il est possible de les evaluer sans aucune approximation. Les champs des theories conformes appartiennent a des representations de plus haut poids de l'algebre de Virasoro, une extension centrale de l'algebre conforme du plan. Ces representations sont etiquetees par h, le poids conforme de leur vecteur de plus haut poids, et par la charge centrale c, le facteur de l'extension centrale, commune a toutes les representations d'une meme theorie. Les theories conformes minimales sont constituees d'un nombre fini de representations. Parmi celles-ci se trouvent des theories unitaires dont les representation forment la serie discrete de l'algebre de Virasoro; leur poids h a la forme h_{p,q}(m)=[ (p(m+1) -qm)^2-1] (4m(m+1)), ou p,q et m sont des entiers positifs et p+q<= m+1. L'entier m parametrise la charge centrale: c(m)=1 -{6over m(m+1)} avec n>= 2. Ces representations possedent un sous-espace invariant engendre par deux sous-representations avec h_1=h_{p,q} + pq et h_2=h_{p,q} + (m-p)(m+1-q) dont chacun des vecteurs de plus haut poids portent le nom de vecteur singulier et sont notes respectivement |Psi _{p,q}> et |Psi_{m-p,m+1-q}>. . Les theories super-conformes sont une version super-symetrique des theories conformes. Leurs champs appartiennent a des representation de plus haut poids de l'algebre de Neveu-Schwarz, une des deux extensions super -symetriques de l'algebre de Virasoro. Les theories super -conformes minimales possedent la meme structure que les theories conformes minimales. Les representations

  19. Peste des petits ruminants

    PubMed Central

    Parida, S.; Muniraju, M.; Mahapatra, M.; Muthuchelvan, D.; Buczkowski, H.; Banyard, A.C.

    2015-01-01

    Peste des petits ruminants virus causes a highly infectious disease of small ruminants that is endemic across Africa, the Middle East and large regions of Asia. The virus is considered to be a major obstacle to the development of sustainable agriculture across the developing world and has recently been targeted by the World Organisation for Animal Health (OIE) and the Food and Agriculture Organisation (FAO) for eradication with the aim of global elimination of the disease by 2030. Fundamentally, the vaccines required to successfully achieve this goal are currently available, but the availability of novel vaccine preparations to also fulfill the requisite for differentiation between infected and vaccinated animals (DIVA) may reduce the time taken and the financial costs of serological surveillance in the later stages of any eradication campaign. Here, we overview what is currently known about the virus, with reference to its origin, updated global circulation, molecular evolution, diagnostic tools and vaccines currently available to combat the disease. Further, we comment on recent developments in our knowledge of various recombinant vaccines and on the potential for the development of novel multivalent vaccines for small ruminants. PMID:26443889

  20. Classification of 20 DES Supernova with OzDES

    NASA Astrophysics Data System (ADS)

    Davis, T. M.; Kim, A. G.; Macualay, E.; Lidman, C.; Sharp, R.; Tucker, B. E.; Yuan, F.; Zhang, B.; Lewis, G. F.; Sommer, N. E.; Martini, P.; Mould, J.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Pan, Y.-C.; Casas, R.; Castander, F. J.; Desai, S.; Paech, K.; Smith, R. C.; Schubnell, M.; Kessler, R.; Lasker, J.; Scolnic, D.; Brout, D. J.; Gladney, L.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; Nichol, R.; Papadopoulos, A.; Childress, M.; D'Andrea, C.; Smith, M.; Sullivan, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.

    2015-12-01

    We report new spectroscopic classifications by OzDES of supernovae discovered by the Dark Energy Survey (ATEL #4668). The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT).

  1. Classification of 15 DES supernovae by OzDES

    NASA Astrophysics Data System (ADS)

    Yuan, F.; Tucker, B. E.; Lidman, C.; Martini, P.; Gshwend, Julia; Moller, A.; Zhang, B.; Smith, R. C.; Schubnell, M.; Kessler, R.; Lasker, J.; Scolnic, D.; Brout, D. J.; Gladney, L.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; Nichol, R.; Papadopoulos, A.; Childress, M.; D'Andrea, C.; Smith, M.; Sullivan, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Kim, A. G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Pan, Y.-C.; Casas, R.; Castander, F. J.; Desai, S.; Paech, K.

    2015-12-01

    We report new spectroscopic classifications by OzDES of supernovae discovered by the Dark Energy Survey (ATEL #4668). The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT).

  2. Classification of 3 DES Supernovae with OzDES

    NASA Astrophysics Data System (ADS)

    Moller, A.; Tucker, B. E.; Yuan, F.; Lewis, G.; Lidman, C.; Macaulay, E.; Nichol, R.; Papadopoulos, A.; Childress, M.; D'Andrea, C.; Smith, M.; Sullivan, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Kim, A. G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Pan, Y.-C.; Casas, R.; Castander, F. J.; Desai, S.; Paech, K.; Smith, R. C.; Schubnell, M.; Kessler, R.; Lasker, J.; Scolnic, D.; Brout, D. J.; Gladney, L.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.

    2016-02-01

    We report new spectroscopic classifications by OzDES of supernovae discovered by the Dark Energy Survey (ATEL #4668). The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT).

  3. Classification of 4 DES supernovae by OzDES

    NASA Astrophysics Data System (ADS)

    Glazebrook, K.; Amon, A.; Lidman, C.; Martini, P.; Tucker, B. E.; Yuan, F.; Aldering, G.; Kim, A. G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Pan, Y.-C.; Casas, R.; Castander, F. J.; Desai, S.; Paech, K.; Smith, R. C.; Schubnell, M.; Kessler, R.; Lasker, J.; Scolnic, D.; Brout, D. J.; Gladney, L.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; Nichol, R.; Papadopoulos, A.; Childress, M.; D'Andrea, C.; Smith, M.; Sullivan, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.

    2015-12-01

    We report new spectroscopic classifications by OzDES of supernovae discovered by the Dark Energy Survey (ATEL #4668). The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT).

  4. Classification of 6 DES Supernova with OzDES

    NASA Astrophysics Data System (ADS)

    Lewis, G. F.; Mould, J.; Lidman, C.; Tucker, B. E.; Sharp, R.; Yuan, F.; Martini, P.; Kessler, R.; Scolnic, D.; Covarrubias, R. A.; Brout, D. J.; Fischer, J. A.; Gladney, L.; March, M.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; Nichol, R.; Papadopoulos, A.; D'Andrea, C.; Smith, M.; Sullivan, M.; Childress, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Kim, A. G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Casas, R.; Castander, F. J.; Desai, S.; Paech, K.; Smith, R. C.; Schubnell, M.

    2015-10-01

    We report new spectroscopic classifications by OzDES of supernovae discovered by the Dark Energy Survey (ATEL #4668). The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT).

  5. Classification of 14 DES Supernova with OzDES

    NASA Astrophysics Data System (ADS)

    Tucker, B. E.; Sharp, R.; Yuan, F.; Zhang, B.; Lidman, C.; Davis, T. M.; Hinton, S.; Mould, J.; Smith, R. C.; Schubnell, M.; Kessler, R.; Scolnic, D.; Covarrubias, R. A.; Brout, D. J.; Fischer, J. A.; Gladney, L.; March, M.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; Nichol, R.; Papadopoulos, A.; D'Andrea, C.; Smith, M.; Sullivan, M.; Childress, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Kim, A. G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Castander, F. J.; Desai, S.; Paech, K.

    2015-10-01

    We report new spectroscopic classifications by OzDES of supernovae discovered by the Dark Energy Survey. The spectra (370-885nm) were obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT).

  6. Animal issues and society.

    PubMed

    Grabau, J H

    1993-05-01

    Animal use topics are sensitive issues today. Animal uses issues are often presented as black and white or 'we' are right and 'they' are wrong. This is clearly demonstrated in the available literature from most organizations. Topics presented will include: delineation of issues and concerned groups; examples of animal issues in education and agriculture; the terrorist issue; examples of animal issues/sportsman issues; examples of political and legislative impact; and examples of biomedical and toxicology animal use issues. PMID:8516774

  7. DES exposure checker: Dark Energy Survey image quality control crowdsourcer

    NASA Astrophysics Data System (ADS)

    Melchior, Peter; Sheldon, Erin; Drlica-Wagner, Alex; Rykoff, Eli S.

    2015-11-01

    DES exposure checker renders science-grade images directly to a web browser and allows users to mark problematic features from a set of predefined classes, thus allowing image quality control for the Dark Energy Survey to be crowdsourced through its web application. Users can also generate custom labels to help identify previously unknown problem classes; generated reports are fed back to hardware and software experts to help mitigate and eliminate recognized issues. These problem reports allow rapid correction of artifacts that otherwise may be too subtle or infrequent to be recognized.

  8. Annuaire du Bureau des longitudes - 2006

    NASA Astrophysics Data System (ADS)

    Imcce; Bureau Des Longitudes

    2005-07-01

    This annual publication provides ephemerides and data to the use of professionnal and amateur astronomers. Divided in 11 chapters it covers concordance of various calendars, explanation of fondamental astronomy and various time scales, explanation for the use of ephemerides; tables provide ephemerides (positions, rise/set/passage) of the Sun and the Moon, planets, planetary satellites, asteroids, comets, bright stars; data and explanation for the physical observation of the surface of the Sun, the Moon, and planets; chart of the sky and a list of constellations and galaxies; prediction and ephemerides for astronomical phenomenon: occultation by the moon, stellar occultations by asteroids and appulses, solar eclipses and lunar eclipses; and an additional review about a hot scientific topic, this year: "Legendre et le méridien terrestre, 200 ans après". Cette publication annuelle fournit des éphémérides et des données à l'usage des astronomes professionnels et des astronomes amateurs. Composée de 11 chapitres elle comprend les rubriques sur les différents calendriers et leurs concordance, les fêtes légales en France, les dates et décrets sur les heures légales en France métropolitaine ; une introduction à l'astronomie fondamentale et aux différentes échelles de temps, des explications sur l'utilisation des éphémérides ; des tables fournissent les éphémérides (positions, heures de lever/coucher/passage) du Soleil et de la Lune, de planètes, de satellites naturels, d'astéroïdes, de comètes, d'étoiles brillantes ; des données pour l'observation de la surface du Soleil, de la Lune, et des planètes ; des cartes du ciel ainsi qu'une liste de constellations et de galaxies ; des prédictions des phénomènes astronomiques : occultation par la Lune, occultation stellaires par des astéroïdes et appulses, éclipses de Soleil et de la Lune; la liste et les coordonnées des observatoires astronomiques les plus connus ; et enfin un cahier th

  9. Transport quantique dans des nanostructures

    NASA Astrophysics Data System (ADS)

    Naud, C.

    2002-09-01

    structure des oscillations de conductance en fonction du flux du champ magnétique de période h/e dont l'amplitude est beaucoup plus importante que celle mesurée sur un réseau carré de même dimension. Cette différence constitue une signature d'un effet de localisation induit par le champ magnétique sur la topologie mathcal{T}3. Pour des valeurs spécifiques du champ magnétique, du fait des interférences destructives Aharonov-Bohm, la propagation des fonctions d'ondes est limitée à un ensemble fini de cellule du réseau appelé cage. De la dépendance en température des oscillations de période h/e mesurées sur le réseau mathcal{T}3 nous avons tiré une longueur caractéristique qui peut être rattachée au périmètre des cages. Un phénomène inattendu fut l'observation, pour des champs magnétiques plus importants, d'un doublement de fréquence des oscillations. Ces oscillations de période h/2e pouvant avoir une amplitude supérieure aux oscillations de période h/e, une interprétation en terme d'harmonique n'est pas possible. Enfin, l'influence de la largeur électrique des fils constituant le réseau et donc celle du nombre de canaux par brin a été étudiée en réalisant des grilles électrostatique. Les variations de l'amplitude des signaux en h/e et h/2e en fonction de la tension de grille ont été mesurés.

  10. Current IT Issues, 2004

    ERIC Educational Resources Information Center

    Spicer, Donald Z.; Deblois, Peter B.

    2004-01-01

    This article features the EDUCAUSE Current Issues Survey. Administered by the EDUCAUSE Current Issues Committee, whose members review and recommend the set of issues to be presented each year, the survey identifies the issues that leaders in higher education information technology see as their most critical IT challenges. The Top-Ten current IT…

  11. Space Station Engineering Design Issues

    NASA Technical Reports Server (NTRS)

    Mcruer, Duane T.; Boehm, Barry W.; Debra, Daniel B.; Green, C. Cordell; Henry, Richard C.; Maycock, Paul D.; Mcelroy, John H.; Pierce, Chester M.; Stafford, Thomas P.; Young, Laurence R.

    1989-01-01

    Space Station Freedom topics addressed include: general design issues; issues related to utilization and operations; issues related to systems requirements and design; and management issues relevant to design.

  12. A Probleme Complexe, Rarement Solution Simple: La Necessite d'une Intervention Integree aupres des Eleves en Difficulte de Comportement. For Every Complex Issue There Is a Simple Answer...and It Is Wrong: The Need for a Comprehensive Intervention with EBD Students.

    ERIC Educational Resources Information Center

    Royer, Egide

    This paper, with portions written in English and French, examines issues in the education of students with emotional or behavior disorders (EBD) from a Canadian perspective. The paper is organized to counter seven "myths" about schools and students with EBD. These are: (1) "the student is the problem" (rather, well organized schools can make a…

  13. Medical Issues in Adoption

    MedlinePlus

    ... to Know About Zika & Pregnancy Medical Issues in Adoption KidsHealth > For Parents > Medical Issues in Adoption Print ... or emotional abuse of the child continue Agency Adoptions If you adopt through an agency, you might ...

  14. Emotional and Social Issues

    MedlinePlus

    ... Epinephrine Emotional & Social Issues Find a Support Group Bullying Prevention Spread the Word True Stories Stay Informed ... Epinephrine Emotional & Social Issues Find a Support Group Bullying Prevention Spread the Word True Stories Stay Informed ...

  15. Post-Adolescent Issues

    MedlinePlus

    Search COPING & HEALING CARING FOR A CHILD: POST-ADOLESCENT ISSUES As your child reaches adulthood, there will ... intake. New issues that you and your post adolescent child may want to discus together with his/ ...

  16. Issues in Peer Review.

    ERIC Educational Resources Information Center

    Sawamura, Mark H.

    2001-01-01

    Based on concerns raised at a workshop at the Southern California College of Optometry, addresses critical issues in the process of peer review of faculty teaching and possible alternatives to these issues as applied to an optometric institution. (EV)

  17. Medical Issues: Equipment

    MedlinePlus

    ... Pool Living With SMA Medical Issues Palliative Breathing Orthopedics Nutrition Equipment Daily Life At School At Home ... Diagnosed Living With SMA Medical Issues Palliative Breathing Orthopedics Nutrition Equipment Daily Life Grief & Loss Community & Local ...

  18. Etude des effets du martelage repetitif sur les contraintes residuelles

    NASA Astrophysics Data System (ADS)

    Hacini, Lyes

    L'assemblage par soudage peut engendrer des contraintes residuelles. Ces contraintes provoquent des fissurations prematurees et un raccourcissement de la duree de vie des composants. Dans ce contexte, le martelage robotise est utilise pour relaxer ces contraintes residuelles. Trois volets sont presentes: le premier est l'evaluation des effets des impacts unitaires repetes sur le champ de contraintes developpe dans des plaques d'acier inoxydable austenitique 304L vierges ou contenant des contraintes residuelles initiales. Dans la deuxieme partie de ce projet, le martelage est applique grace au robot SCOMPI. Les contraintes residuelles induites et relaxees par martelage sont ensuite mesurees par la methode des contours, qui a ete adaptee a cet effet. Dans la troisieme partie, le martelage est modelise par la methode des elements finis. Un modele axisymetrique developpe grace au logiciel ANSYS permet de simuler des impacts repetes d'un marteau elastique sur une plaque ayant un comportement elastoplastique.

  19. Contemporary American Issues.

    ERIC Educational Resources Information Center

    Lewis, Bill; And Others

    This nine-week unit from a junior high American government curriculum covers the following topics: (1) What are the current issues in our physical and social environment?; (2) How do we investigate and evaluate issues?; and (3) What contemporary issues in my physical or social environment do I want to investigate? Students are required to do…

  20. News & Issues, 1999.

    ERIC Educational Resources Information Center

    Oshinsky, Carole J., Ed.

    1999-01-01

    This publication is comprised of the two 1999 issues of "News and Issues," a newsletter devoted to identifying and promoting strategies to reduce the young child poverty rate, and to improve the life chances of children still living in poverty. The Winter/Spring issue includes the following articles: (1) "Innovative Strategies Help Families Cope…

  1. Issues in Teaching Mathematics

    ERIC Educational Resources Information Center

    Ediger, Marlow

    2013-01-01

    In this article, the author states that there are selected issues in mathematics instruction that educators should be well aware of when planning lessons and units of study. These issues provide a basis for thought and discussion when assisting pupils to attain more optimally. Purposeful studying of issues guides mathematics teachers in…

  2. Peste des Petits Ruminants Virus.

    PubMed

    Baron, M D; Diallo, A; Lancelot, R; Libeau, G

    2016-01-01

    Peste des petits ruminants virus (PPRV) causes a severe contagious disease of sheep and goats and has spread extensively through the developing world. Because of its disproportionately large impact on the livelihoods of low-income livestock keepers, and the availability of effective vaccines and good diagnostics, the virus is being targeted for global control and eventual eradication. In this review we examine the origin of the virus and its current distribution, and the factors that have led international organizations to conclude that it is eradicable. We also review recent progress in the molecular and cellular biology of the virus and consider areas where further research is required to support the efforts being made by national, regional, and international bodies to tackle this growing threat. PMID:27112279

  3. The enhancement of existing DES Maplet interface

    NASA Astrophysics Data System (ADS)

    Abdullah, Nur Lina; Mutalip, Rasidah Abdull; Abdullah, Kamilah

    2014-07-01

    This study pertains to the process of Data Encryption Standard, DES. DES consists of encryption and decryption processes linked with mathematical elements such as algebra and number theory. Preliminary, studies revealed that most of mathematics students face a problem in understanding the complicated process of DES. In modern learning methods, learning environment becomes more interesting with the use of computer and a variety of mathematical software packages. Several mathematical softwares such as Maple, Mathematica, Mathlab and Sage were developed in order to fulfill the specific calculation requirements. Correspondingly, motivated from that, this study incorporated with Maple to enhance the existing DES Maplet interface to be more interactive and user-friendly compared to the original version.

  4. Current issues and actions

    SciTech Connect

    Black, D.G.

    1995-06-01

    This section of the 1994 Hanford Site Environmental Report summarizes the progress that has been made toward achieving full regulatory compliance at the Hanford Site. Ongoing compliance self-assessments, implementation of the Tri-Party Agreement, and public meetings continue to identify environmental compliance issues. These issues are discussed openly with the regulatory agencies and with the public to ensure that all environmental compliance issues are addressed.

  5. Aviation Safety Issues Database

    NASA Technical Reports Server (NTRS)

    Morello, Samuel A.; Ricks, Wendell R.

    2009-01-01

    The aviation safety issues database was instrumental in the refinement and substantiation of the National Aviation Safety Strategic Plan (NASSP). The issues database is a comprehensive set of issues from an extremely broad base of aviation functions, personnel, and vehicle categories, both nationally and internationally. Several aviation safety stakeholders such as the Commercial Aviation Safety Team (CAST) have already used the database. This broader interest was the genesis to making the database publically accessible and writing this report.

  6. Copernic: la piste des influences arabes

    NASA Astrophysics Data System (ADS)

    Khalatbari, A.; Bonnet-Bidaud, J. M.

    2004-10-01

    Copernic a-t-il connu le travail des astronomes du Moyen-Orient ? S'en est-il inspiré pour élaborer sa théorie de l'héliocentrisme ? C'est l'hypothèse avancée par certains historiens des sciences pour comprendre le génie de celui qui, le premier, a placé le Soleil au centre du monde. Enquête.

  7. Issues of General Concern.

    ERIC Educational Resources Information Center

    Dwyer, Johanna

    1980-01-01

    This task force report presents 10 issues considered important to nutrition education: goals, approaches, advocacy, coordination, training, financing, research, evaluation, follow-up, and information linkages. (SA)

  8. ISSUES MANAGEMENT PROGRAM MANUAL

    SciTech Connect

    Gravois, Melanie

    2007-06-27

    The Lawrence Berkeley National Laboratory (LBNL) Issues Management Program encompasses the continuous monitoring of work programs, performance and safety to promptly identify issues to determine their risk and significance, their causes, and to identify and effectively implement corrective actions to ensure successful resolution and prevent the same or similar problems from occurring. This document describes the LBNL Issues Management Program and prescribes the process for issues identification, tracking, resolution, closure, validation, and effectiveness of corrective actions. Issues that are governed by this program include program and performance deficiencies or nonconformances that may be identified through employee discovery, internal or external oversight assessment findings, suggested process improvements and associated actions that require formal corrective action. Issues may also be identified in and/or may result in Root Cause Analysis (RCA) reports, Price Anderson Amendment Act (PAAA) reports, Occurrence Reporting and Processing System (ORPS) reports, Accident Investigation reports, assessment reports, and External Oversight reports. The scope of these issues may include issues of both high and low significance as well as adverse conditions that meet the reporting requirements of the University of California (UC) Assurance Plan for LBNL or other reporting entities (e.g., U.S. Environmental Protection Agency, U.S. Department of Energy). Issues that are found as a result of a walk-around or workspace inspection that can be immediately corrected or fixed are exempt from the requirements of this document.

  9. Emerging Environmental Issues.

    NASA Astrophysics Data System (ADS)

    Munn, Ted; Timmerman, Peter; Whyte, Anne

    2000-07-01

    Emerging environmental issues are issues that may someday be of concern but that have not yet been generally recognized. A review of such issues that have occurred over the last 50 years reveals that many of them have erupted rather suddenly (e.g., stratospheric ozone depletion, acid rain). However, some issues were recognized long ago by the scientific community (e.g., land degradation, overconsumption of freshwater), but for economic or other reasons governments have refused to act. The authors of this study were commissioned by the United Nations Environment Program and the Scientific Committee on Problems of the Environment to carry out a global survey of emerging environmental issues, using the responses received to questionnaires that were sent to scientists, managers, and policy makers around the world. It had been hoped that a short list of priority issues could be identified but the number of issues was very long. However, the issues could be divided into four major classes: 1) Transformations of old issues; continually evolving, and in most cases broadening, in response to increasing scientific and technological knowledge and to changing socioeconomic, cultural, and environmental conditions. 2) Policy issues, the long-term environmental consequences of which may already be of concern. 3) Accidents waiting to happen, for example, chemical time bombs. 4) Surprises in the nonlinear responses of ecosystems to new and different stresses, as well as in the nature of socioeconomic drivers of environmental change. In a subsequent study, the authors applied the lessons learned in the global study to an examination of emerging environmental issues in the province of Ontario, Canada.

  10. Diffusion des Metaux et Evolution Stellaire

    NASA Astrophysics Data System (ADS)

    Turcotte, Sylvain

    Nous presentons dans cette these des modeles d'evolution stellaire incorporant la diffusion microscopique de maniere consistante. Pour la premiere fois, on a calcule l'evolution d'etoiles en tenant compte en detail de l'impact des variations d'abondances sur leur structure. Nous utilisons des spectres monochromatiques pour chacun des elements les plus abondants dans un melange solaire pour recalculer l'opacite pour les abondances et les conditions locales dans l'interieur d'une etoile au cours de son evolution. Nos modeles montrent que la diffusion atomique des metaux a un effet important sur les opacites dan les etoiles de plus de 1.3Msolar ou l'abondance du fer et des autres elements du pic du fer varient substantiellement. Ces etoiles, sans rotation ou champ magnetique, sont proches des etoiles de type Fm-Am dans lesquelles on observe une legere surabondance d'elements du pic du fer en plus d'une sous-abondance de calcium, sous-abondance que l'on obtient egalement. Nous obtenons cependant des surabondances depassant un facteur 10 pour les etoiles de plus de 1.4Msolar ce qui suggere qu'il existe un ou plusieurs mecanismes limitant la diffusion microscopique. La surabondance du fer en surface cause une augmentation, qui peut atteindre un facteur sept, de l'opacite a la limite de la zone convective. Ceci cause un accroissement de la temperature effective et de la masse de la zone convective comparativement aux modeles n'incluant que la diffusion de l'helium. Il s'agit la du principal effet de la diffusion sur la structure interne de ces etoiles. La diffusions n'a pas d'influence sur l'evolution de coeur stellaire dans les etoiles significativement plus massives quie le Soleil. Nous avons verife que l'utilisation de modeles consistants avec diffusion n'apporte pas d'amelioration sensible aux modeles solaires. Les forces radiatives calculees a partir des spectres d'OPAL pour les elements du pic du fer representent une fraction importante de la gravite. On obtient des

  11. The Coverage Issue

    ERIC Educational Resources Information Center

    Yoshinobu, Stan; Jones, Matthew G.

    2012-01-01

    A significant issue mathematics instructors face is how to cover all the material. Mathematics teachers of all levels have some external and internal pressures to "get through" all the required material. The authors define "the coverage issue" to be the set of difficulties that arise in attempting to cover a lengthy list of topics. Principal among…

  12. Poverty + Hunger = Global Issues.

    ERIC Educational Resources Information Center

    Schwartz, Richard H.

    1983-01-01

    Geography teachers can use mathematics to teach fourth, fifth, and sixth grade students about critical global issues. Five sample problems concerning population, poverty, waste, the arms race, and hunger are presented. The global issue related to each problem is discussed, and the solution and mathematical skill are provided. (RM)

  13. Teaching about Population Issues.

    ERIC Educational Resources Information Center

    Otero, George G., Jr., Comp.

    This teaching guide on population issues contains 19 activities for students in grades 7-12. The objective is to analyze population issues that have resulted from human population dynamics. In this guide, four categories of activities are included: some are discussion starters, some provide factual data, some focus on thinking skills, and some are…

  14. Agriculture Issues. Transition Series.

    ERIC Educational Resources Information Center

    Comptroller General of the U.S., Washington, DC.

    This report is one of a series by the General Accounting Office that summarizes major policy, management, and program issues facing agency heads in the Bush administration. Many concerns have been identified, some new, others long-standing. This report on the Department of Agriculture describes concerns about the following six issues: (1)…

  15. Issues in Pupil Transportation.

    ERIC Educational Resources Information Center

    Association of School Business Officials International, Reston, VA.

    The primary purpose of this book is to present the critical issues in pupil transportation that will confront pupil transportation supervisors in local school districts. The following issues are discussed: (1) demands for extended service from community pressure groups; (2) reductions in budget requests by governing bodies; (3) unrest among driver…

  16. Legal Issues in Testing.

    ERIC Educational Resources Information Center

    Childs, Ruth Axman

    Court cases are presented that illustrate some of the issues that courts have dealt with in the area of educational testing. While this study was developed primarily for parents, the booklet should also help school administrators and testing professionals learn about court cases and precedents relevant to some major issues in educational testing.…

  17. Issues in International Rehabilitation.

    ERIC Educational Resources Information Center

    Nathanson, Jeanne H., Ed.

    1991-01-01

    Eight articles address issues and programs in international rehabilitation. The issue is introduced by a message from the Assistant Secretary of the United States Department of Education for the Office of Special Education and Rehabilitation Services, Robert R. Davila. Next, "A History of International Rehabilitation" (Nora Ellen Groce) reports on…

  18. Issue Brief on Diversity

    ERIC Educational Resources Information Center

    Division on Developmental Disabilities, Council for Exceptional Children (NJ1), 2013

    2013-01-01

    During the past year, the Diversity Committee of the Division of Developmental Disabilities (DDD) Board worked with the Board and the Issues Committee Chair to develop an issue brief addressing diversity, its impact on the membership and the wider community that is served by the work of DDD, resulting in recommendations that will influence policy…

  19. Preface: ISBB Special Issue

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This special issue is published for the International Society of Biocatalysis and Biotechnology (ISBB). The ISBB special issue is devoted to all areas of biocatalysis and agricultural biotechnology in which biological systems are developed and/or used for the provision of commercial goods or serv...

  20. State Issues Digest, 2003.

    ERIC Educational Resources Information Center

    American Association of State Colleges and Universities, Washington, DC.

    This digest is designed to provide campus leaders with an up-to-date, "bird's eye" view of key issues affecting state colleges and universities. The American Association of State Colleges and Universities conducted is annual State Issues Survey of the Council of State Representatives in 2002 and received 44 responses from 61 college and university…

  1. TRICHLOROETHYLENE (TCE) ISSUE PAPERS

    EPA Science Inventory

    These issue papers are a part of EPA's effort to develop a trichloroethylene (TCE) human health risk assessment. These issue papers were developed by EPA to provide scientific and technical information to the National Academy of Sciences (NAS) for use in developing their advice ...

  2. HRD Issues in Asia.

    ERIC Educational Resources Information Center

    1998

    This document contains four papers from a symposium on human resource development (HRD) issues in Asia. "The Japanese Human Resource Development System" (Kiyoe Harada) provides a comprehensive model of the Japanese HRD system based on the current state of the art, including management practices and issues and trends in Japanese HRD. "Structured…

  3. Navigating "thorny" issues

    NASA Astrophysics Data System (ADS)

    Hutchinson, Kashema; Gilbert, Aderinsola; Malyukova, Anna

    2016-08-01

    In their article Mindfulness and discussing `thorny' issues in the classroom Konstantinos Alexakos et al. (Cult Stud Sci Educ, 2016. doi: 10.1007/s11422-015-9718-0) describe "thorny" issues as "difficult topics to discuss because they are more personal to some perhaps even cause pain and violence." As women from different backgrounds, we engage in a metalogue, which expands on our thoughts and emotions the thorny issues evoked. Our discussion is grounded in theoretical frameworks of mindfulness, wellness, and safe space for learning. We also reflect on our experiences of facing some of the thorny issues in our academic and personal lives. Having trust and respect for one another and being aware of thorny issues allows for a meaningful conversation about the complexity and nuances involved in discussing difficult topics in a classroom setting.

  4. Issues management made easier

    SciTech Connect

    Brownson, L.

    1993-10-01

    Increases in ES&H compliance issues within the past few years have necessitated a formal process by which DOE facilities address these issues. In May 1991, ANL-W implemented the ANL-W Issues Management System (IMS) to facilitate the management of compliance issues and scheduling of corrective action plans with limited resources. The central focus of this process is a computer database, Integrated Resource Management System (IRMS), which allows quick retrieval of compliance information, organization of compliance issues based on a risk-based prioritization methodology, and tracking of corrective action plans. Without the IRMS, the ANL-W Issues Management System would have been difficult to administer and manage. ANL-W has used the IRMS for both audit preparation and audit response, most noticeably the preparation and subsequent response to the 1991 Tiger Team audit. The IRMS was used to track ANL-W Self-Assessment corrective action plans, provide instant information to Tiger Team members regarding Self-Assessment findings, produce prioritized lists of Tiger Team concerns for developing corrective action plans, and track Tiger Team corrective action plans. Status reports to senior, laboratory management regarding the Tiger Team corrective action plan are produced based on information provided by the IRMS. This paper discusses the criteria used for selecting the IRMS, implementation of the Issues Management System using the IRMS, lessons learned, and the future evolution of the IRMS.

  5. Understanding Pregnancy and Birth Issues

    MedlinePlus

    ... Navigation Bar Home Current Issue Past Issues Understanding Pregnancy and Birth Issues Past Issues / Winter 2008 Table ... turn Javascript on. What is a High-Risk Pregnancy? All pregnancies involve a certain degree of risk ...

  6. Space Station Software Issues

    NASA Technical Reports Server (NTRS)

    Voigt, S. (Editor); Beskenis, S. (Editor)

    1985-01-01

    Issues in the development of software for the Space Station are discussed. Software acquisition and management, software development environment, standards, information system support for software developers, and a future software advisory board are addressed.

  7. GROUND WATER SAMPLING ISSUES

    EPA Science Inventory

    Obtaining representative ground water samples is important for site assessment and
    remedial performance monitoring objectives. Issues which must be considered prior to initiating a ground-water monitoring program include defining monitoring goals and objectives, sampling point...

  8. JPRS report. Proliferation issues

    SciTech Connect

    1992-03-26

    This report contains foreign media information on issues related to worldwide proliferation and transfer activities in nuclear, chemical, and biological weapons, including delivery systems and the transfer of weapons-relevant technologies.

  9. Ethical issues in immunisation.

    PubMed

    Isaacs, David; Kilham, Henry; Leask, Julie; Tobin, Bernadette

    2009-01-29

    Discussions about current and future immunisation programmes raise novel questions about familiar ethical issues. Two sets of ethical issues dominate these discussions. The first is the issue of compulsory immunisation: what should be done about parents who fail to immunise their children? The second is: given competing demands on health care budgets, how should principles of justice in access and distribution inform vaccination programmes? This paper considers these two issues in the light of traditional ethical principles. With respect to the first, we argue that compulsion is justified only in cases in which we know with practical certainty that parental failure to immunise puts their own child or other children at high risk of severe illness. We also argue that the state should compensate those who suffer vaccine-related injury. With respect to the second, we claim that allocating resources according to health care need requires establishing priorities between public health programmes such as immunisation and other treatment programmes. PMID:19026706

  10. Medical Issues: Orthopedics

    MedlinePlus

    ... support & care > living with sma > medical issues > orthopedics Orthopedics In SMA, muscle weakness can cause several complications. ... difficulty sitting, standing, or performing normal daily activities. Orthopedic Considerations Doctors and therapists classify individuals with SMA ...

  11. Special issue on filamentation

    NASA Astrophysics Data System (ADS)

    Li, Ruxin; Milchberg, Howard; Mysyrowicz, André

    2014-05-01

    Journal of Physics B: Atomic, Molecular and Optical Physics is delighted to announce a forthcoming special issue on filamentation, to appear in the spring of 2015, and invites you to submit a paper. This special issue will attempt to give an overview of the present status of this field in order to create synergies and foster future developments. The issue is open to papers on the following issues: Theoretical advances on filamentation. Self-focusing and collapse. Filamentation in various media. Pulse self-compression and ultrafast processes in filaments. Molecular alignment and rotation. Filamentation tailoring. Interaction between filaments. Filament weather and pollution control. Filament induced condensation and precipitation. Terahertz science with filaments. Lasing in filaments. Filament induced molecular excitation and reaction. Electric discharge and plasma. Cross-disciplinary applications. Novel concepts related to these topics are particularly welcome. Please submit your article by 1 October 2014 (expected web publication: spring 2015) using our website http://mc04.manuscriptcentral.com/jphysb-iop. Submissions received after this date will be considered for the journal, but may not be included in the special issue. The issue will be edited by Ruxin Li, Howard Milchberg and André Mysyrowicz.

  12. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Des Allemands Bayou. 117.439... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.439 Des Allemands Bayou. (a) The draw of the S631 bridge, mile 13.9 at Des Allemands, shall open on signal if at least four hours notice...

  13. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Des Allemands Bayou. 117.439... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.439 Des Allemands Bayou. (a) The draw of the S631 bridge, mile 13.9 at Des Allemands, shall open on signal if at least four hours notice...

  14. 33 CFR 117.439 - Des Allemands Bayou.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Des Allemands Bayou. 117.439... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Louisiana § 117.439 Des Allemands Bayou. (a) The draw of the S631 bridge, mile 13.9 at Des Allemands, shall open on signal if at least four hours notice...

  15. The GBT-SerDes ASIC prototype

    NASA Astrophysics Data System (ADS)

    Moreira, P.; Baron, S.; Bonacini, S.; Cobanoglu, O.; Faccio, F.; Feger, S.; Francisco, R.; Gui, P.; Li, J.; Marchioro, A.; Paillard, C.; Porret, D.; Wyllie, K.

    2010-11-01

    In the framework of the GigaBit Transceiver project (GBT), a prototype, the GBT-SerDes ASIC, was developed, fabricated and tested. To sustain high radiation doses while operating at 4.8Gb/s, the ASIC was fabricated in a commercial 130 nm CMOS technology employing radiation tolerant techniques and circuits. The transceiver serializes-deserializes the data, Reed-Solomon encodes and decodes the data and scrambles and descrambles the data for transmission over optical fibre links. This paper describes the GBT-SerDes architecture, and presents the test results.

  16. The railroad perspective: Issues behind the issues

    SciTech Connect

    Furber, C.P.; Brobst, W.A.

    1986-01-01

    Rail transportation is a vital segment of DOE's spent fuel program. Most of the shipments from reactors to a repository or to a Monitored Retrievable Storage facility will be by rail, and essentially all of the shipments from an MRS to a repository. Casks must move economically and efficiently, while at the same time providing adequate safety to the public and transport workers, and meeting the legal/institutional constraints. Shippers are faced with the problem of procuring transportation services in a safe manner at a reasonable cost, trying to balance freight charges against cask inventory costs. Carriers are cautious about accepting potentially high hazard materials in routine service, and are worried about uninsured losses in case of accidents. Both shippers and carriers operate under different scheduling and operational criteria. Technical and institutional constraints add to the complexity of the operation. Standardization of shipping casks and rail car design will ease the resolution of the complex problems now existent. This paper discusses the economic, safety, operational, and legal issues surrounding rail transportation.

  17. Xenografting: ethical issues.

    PubMed Central

    Hughes, J

    1998-01-01

    This paper considers the ethical issues raised by xenotransplantation under four headings: interfering with nature; effects on the recipient; effects on other humans; and effects on donor animals. The first two issues raise no insuperable problems: charges of unnaturalness are misguided, and the risks that xenotransplantation carries for the recipient are a matter for properly informed consent. The other two issues raise more serious problems, however, and it is argued that if we take seriously the risk of transferring new infectious agents from animal to human populations and the interests of donor animals, then a moratorium on xenotransplantation is called for. The paper finds that the recent Nuffield Council and Department of Health reports on xenotransplantation are insufficiently cautious in the conclusions that they draw from these considerations. PMID:9549678

  18. Special Issue: "Functional Dendrimers".

    PubMed

    Tomalia, Donald A

    2016-01-01

    This special issue entitled "Functional Dendrimers" focuses on the manipulation of at least six "critical nanoscale design parameters" (CNDPs) of dendrimers including: size, shape, surface chemistry, flexibility/rigidity, architecture and elemental composition. These CNDPs collectively define properties of all "functional dendrimers". This special issue contains many interesting examples describing the manipulation of certain dendrimer CNDPs to create new emerging properties and, in some cases, predictive nanoperiodic property patterns (i.e., dendritic effects). The systematic engineering of CNDPs provides a valuable strategy for optimizing functional dendrimer properties for use in specific applications. PMID:27517890

  19. Developpement des betons semi autoplacants a rheologie adaptee pour des infrastructures

    NASA Astrophysics Data System (ADS)

    Sotomayor Cruz, Cristian Daniel

    Au cours des dernières décennies, les infrastructures canadiennes et québécoises comportent plusieurs structures en béton armé présentant des problèmes de durabilité dus aux conditions climatiques sévères, à la mauvaise conception des structures, à la qualité des matériaux, aux types des bétons choisis, aux systèmes de construction ou à l'existence d'événements incontrôlables. En ce qui concerne le choix du béton pour la construction des infrastructures, une vaste gamme de béton divisée en deux principaux types peut être utilisée: le béton conventionnel vibré (BCV) et le béton autoplaçant (BAP). Dans le cas d'un BCV, la consolidation inadéquate par vibration a été un problème récurrent, occasionnant des dommages structuraux. Ceci a conduit à une réduction de la durabilité et à une augmentation du coût d'entretien et de réparation des infrastructures. Rien que l'utilisation d'un BAP a des avantages tels que l'élimination de la vibration, la réduction des coûts de main d'oeuvre et l'amélioration de la qualité des structures, néanmoins, le coût initial d'un BAP par rapport à un BCV ne permet pas encore de généraliser son utilisation dans l'industrie de la construction. Ce mémoire présente la conception d'une nouvelle gamme de béton semi-autoplaçant pour la construction des infrastructures (BSAP-I) exigeant une vibration minimale. Il s'agit de trouver un équilibre optimal entre la rhéologie et le coût initial du nouveau béton pour conférer une bonne performance structurale et économique aux structures. Le programme expérimental établi a premièrement permis d'évaluer la faisabilité d'utilisation des BSAP-I pour la mise en place des piliers d'une infrastructure de pont à Sherbrooke. En plus, l'utilisation d'un plan d'expériences a permis l'évaluation de trois paramètres de formulation sur les propriétés des mélanges de BSAP-I à l'état frais et durci. Finalement, l'évaluation de la performance des

  20. Top 10 IT Issues, 2007

    ERIC Educational Resources Information Center

    Camp, John S.; DeBlois, Peter B.

    2007-01-01

    The EDUCAUSE Current Issues Committee, whose members review and recommend the set of IT issues to be presented each year, conducted a Web-based survey in December 2006 to identify the five of thirty-one IT issues in each of four areas: (1) issues that are critical for strategic success; (2) issues that are expected to increase in significance; (3)…

  1. It Top-10 Issues 2006

    ERIC Educational Resources Information Center

    Dewey, Barbara I.; DeBlois, Peter B.

    2006-01-01

    The EDUCAUSE Current Issues Committee, whose members review and recommend the set of IT issues to be presented each year, conducted a Web-based survey in December 2005 to identify the five of thirty-one IT issues in each of four areas: (1) issues that are critical for strategic success; (2) issues that are expected to increase in significance; (3)…

  2. PREFACE: CEWQO Topical Issue CEWQO Topical Issue

    NASA Astrophysics Data System (ADS)

    Bozic, Mirjana; Man'ko, Margarita

    2009-09-01

    This topical issue of Physica Scripta collects selected peer-reviewed contributions based on invited and contributed talks and posters presented at the 15th Central European Workshop on Quantum Optics (CEWQO) which took place in Belgrade 29 May-3 June 2008 (http://cewqo08.phy.bg.ac.yu). On behalf of the whole community took place in Belgrade 29 May-3 June 2008 (http://cewqo08.phy.bg.ac.yu, cewqo08.phy.bg.ac.yu). On behalf of the whole community of the workshop, we thank the referees for their careful reading and useful suggestions which helped to improve all of the submitted papers. A brief description of CEWQO The Central European Workshop on Quantum Optics is a series of conferences started informally in Budapest in 1992. Sometimes small events transform into important conferences, as in the case of CEWQO. Professor Jozsef Janszky, from the Research Institute of Solid State Physics and Optics, is the founder of this series. Margarita Man'ko obtained the following information from Jozsef Janszky during her visit to Budapest, within the framework of cooperation between the Russian and Hungarian Academies of Sciences in 2005. He organized a small workshop on quantum optics in Budapest in 1992 with John Klauder as a main speaker. Then, bearing in mind that a year before Janszky himself was invited by Vladimir Buzek to give a seminar on the same topic in Bratislava, he decided to assign the name 'Central European Workshop on Quantum Optics', considering the seminar in Bratislava to be the first workshop and the one in Budapest the second. The third formal workshop took place in Bratislava in 1993 organized by Vladimir Buzek, then in 1994 (Budapest, by Jozsef Janszky), 1995 and 1996 (Budmerice, Slovakia, by Vladimir Buzek), 1997 (Prague, by Igor Jex), 1999 (Olomouc, Czech Republic, by Zdenek Hradil), 2000 (Balatonfüred, Hungary, by Jozsef Janszky ), 2001 (Prague, by Igor Jex), 2002 (Szeged, Hungary, by Mihaly Benedict), 2003 (Rostock,Germany, by Werner Vogel and

  3. Current Issues in Dyslexia.

    ERIC Educational Resources Information Center

    Ansara, Alice, Ed.

    1979-01-01

    This bulletin is published annually in the interest of children with learning disabilities, language disabilities, or dyslexia. The 22 articles discuss the following topics: current issues in dyslexia, language disorders, subgroups in dyslexia, specificity and parameters in defining dyslexia, strategies for recognition and management of reading…

  4. Mental Health Issues

    PubMed Central

    Clark, Peggy A.

    2004-01-01

    The following overview discusses and compares the findings and implications of the articles in this issue of the Health Care Financing Review that deal with mental health topics—particularly children's mental health— in the Medicaid context. It also briefly describes articles concerning prospective payments for psychiatric patients under Medicare. PMID:25372025

  5. [Thematic Issue: International Communications.

    ERIC Educational Resources Information Center

    Howkins, John, Ed.

    1977-01-01

    The five major articles in this document examine a variety of subjects: communication issues involved in the upcoming United Nations conference "Technical Cooperation among Developing Countries"; the fundamental role that information plays in the economy and in social structures of advanced industrial economies; an investigation into the…

  6. Special Issue: Rural Workers.

    ERIC Educational Resources Information Center

    Goodson, Elizabeth; And Others

    1995-01-01

    The issue discusses the role of the International Labour Office in the field of workers' education for rural workers and their organizations. Articles discuss labor conditions, child labor in agriculture, gender and equality training, trade unions, fair trade, and changing patterns of food production. Appendixes include information about…

  7. Addressing Social Issues.

    ERIC Educational Resources Information Center

    Schoebel, Susan

    1991-01-01

    Maintains that advertising can help people become more aware of social responsibilities. Describes a successful nationwide newspaper advertising competition for college students in which ads address social issues such as literacy, drugs, teen suicide, and teen pregnancy. Notes how the ads have helped grassroots programs throughout the United…

  8. Hypertext Design Issues.

    ERIC Educational Resources Information Center

    Binder, Carl

    1989-01-01

    Presents a conceptual overview of online information systems, emphasizing the distinction between hypertext (associative) and more traditional (search) models of information management. Five commercially available hypertext systems are reviewed, hypertext design issues are discussed, and the application of structured writing techniques to…

  9. [Thematic Issue: Remote Sensing.

    ERIC Educational Resources Information Center

    Howkins, John, Ed.

    1978-01-01

    Four of the articles in this publication discuss the remote sensing of the Earth and its resources by satellites. Among the topics dealt with are the development and management of remote sensing systems, types of satellites used for remote sensing, the uses of remote sensing, and issues involved in using information obtained through remote…

  10. Workplace Diversity Issues.

    ERIC Educational Resources Information Center

    1999

    This document contains three symposium papers on workplace diversity issues. "Expanding Theories of Career Development: Adding the Voices of African American Women in the White Academy" (Mary V. Alfred) questions the validity of existing career development models for women and minority groups and examines the professional development of five…

  11. Emerging Privacy Issues.

    ERIC Educational Resources Information Center

    Ware, Willis H.

    As the issue of information privacy increases in complexity in terms of the number of organizations involved, the intricacy of the information flows, and the difficulty of conceiving appropriate legal safeguards, it is not certain that the practices and laws that have been developed for current privacy protection can work for new situations.…

  12. Structuralist Performance Issue.

    ERIC Educational Resources Information Center

    Kirby, Michael, Ed.

    1979-01-01

    Defining structuralism as an unannounced aesthetic movement that involves not only the theatre but all arts, this journal issue focuses on structuralist performance. The nine articles provide information on the following topics: the French theatre group, Atelier Theatre et Musique; "Tell Me," a play by Guy de Cointet; patterning in "Five…

  13. Research Issues in HRD.

    ERIC Educational Resources Information Center

    1997

    This document contains four papers from a symposium on research issues in human resource development (HRD). "Data for HRD Research and the 1997 Human Performance Practices Survey" (Laurie J. Bassi, George S. Benson), describes two research projects undertaken by American Society for Training and Development (ASTD): publication of the "ASTD…

  14. Cultural Issues in Organizations.

    ERIC Educational Resources Information Center

    1999

    This document contains four symposium papers on cultural issues in organizations. "Emotion Management and Organizational Functions: A Study of Action in a Not-for-Profit Organization" (Jamie Callahan Fabian) uses Hochschild's emotion systems theory and Parsons' social systems theory to explain why members of an organization managed their…

  15. Labor Issues. Transition Series.

    ERIC Educational Resources Information Center

    Comptroller General of the U.S., Washington, DC.

    Major policy, management, and program issues face the Congress and new administration in the area of labor. Many of the nation's youth are leaving school poorly prepared for the new work world. The nation already has a large group of economically disadvantaged people who lack necessary skills. Annually, 900,000 or more workers are at least…

  16. Contextual Learning Issues.

    ERIC Educational Resources Information Center

    1999

    This document contains four symposium papers on contextual learning issues. "Learning to Learn Strategies of Successful Real Estate Professionals: Implications for Learning in the Workplace" (Margot B. Weinstein) describes a multicase study in which a model called the Individual Learning System was used to identify the strategies and resources…

  17. Multicultural Issues in Autism

    ERIC Educational Resources Information Center

    Dyches, Tina Taylor; Wilder, Lynn K.; Sudweeks, Richard R.; Obiakor, Festus E.; Algozzine, Bob

    2004-01-01

    The professional literature provides ample evidence that individuals with autism exhibit a myriad of unusual social, communication, and behavioral patterns of interactions that present challenges to their families and service providers. However, there is a dearth of quality works on multicultural issues regarding autistic spectrum disorders. In…

  18. Issues of Youth Employment.

    ERIC Educational Resources Information Center

    Bender, Carl M.; Petty, Gregory C.

    This document contains one of two reports presented at the Governor's National Forum on Youth Employment, May 22-23, 1980. Focusing on the issue of youth employment, this report is divided into seven sections. Section 1 discusses the high national youth unemployment rate. Section 2 describes a variety of factors pertinent to youth unemployment and…

  19. Career Issues in Organizations.

    ERIC Educational Resources Information Center

    1997

    This document contains four papers from a symposium on career issues in organizations. "Learning During Downsizing: Stories from the Survivors" (Sharon J. Confessore) describes a study to demonstrate that survivors of corporate downsizings undertake learning activities and use many resources to accomplish the learning tasks. "Organizational Career…

  20. Automated conflict resolution issues

    NASA Technical Reports Server (NTRS)

    Wike, Jeffrey S.

    1991-01-01

    A discussion is presented of how conflicts for Space Network resources should be resolved in the ATDRSS era. The following topics are presented: a description of how resource conflicts are currently resolved; a description of issues associated with automated conflict resolution; present conflict resolution strategies; and topics for further discussion.

  1. Control Dewar Open Issues

    SciTech Connect

    Rucinski, R.; /Fermilab

    1993-10-04

    In the process of developing a design for the design report, side questions or comments arose which were not completely answered or investigated because the work was outside the scope of developing a base design. I have pored over my meeting notes and tried to list all such control dewar 'open issues' in this engineering note.

  2. Chimney Open Issues

    SciTech Connect

    Rucinski, R.; /Fermilab

    1993-10-04

    In the process of developing a design for the design report, many side questions or comments arose which were not completely answered or investigated because the work was outside the scope of developing a base design. I have pored over my meeting notes and tried to list all such chimney 'open issues' in this engineering note.

  3. JPRS report proliferation issues

    SciTech Connect

    1991-11-18

    This report contains foreign media information on issues related to worldwide proliferation and transfer activities in nuclear, chemical, and biological weapons, including delivery systems and the transfer of weapons relevant technologies. The following locations are included: (1) China; (2) Indonesia; (3) Bulgaria; (4) Brazil, Cuba; (5) Egypt, India, Iran, Iraq, Israel, Pakistan; (6) Soviet Union; and (7) France, Germany, United Kingdom, Italy, Norway.

  4. Action Learning Issues.

    ERIC Educational Resources Information Center

    1998

    This document contains four papers from a symposium on adult learning issues and human resource development (HRD). "Creating a Systemic Framework for the Transfer of Learning from an Action Learning Experience" (Suzanne D. Butterfield, Kitty Gold, Verna J. Willis) discusses a study of the organizational elements that affect learning and transfer…

  5. Issues in HRD. Symposium.

    ERIC Educational Resources Information Center

    2002

    This document contains four papers on issues in human resource development (HRD). "Employability By Sector of Industry: Taking Account of Supply and Demand Characteristics (Andries de Grip, Jasper B. van Loo, Jos M.A.F. Sanders) reports on development of an Industry Employability Index that integrates both supply and demand determinants of…

  6. Workforce Issues Facing HRD.

    ERIC Educational Resources Information Center

    1999

    This document contains four symposium papers on work force issues facing human resource development (HRD). "Contributing Factors to the Success of Women and People of Color in Leadership Roles: A Message to HRD Professionals" (Jean R. McFarland, Gary Leske, Caroline S. V. Turner) reports the results of a survey in which nonwhite males, nonwhite…

  7. Learning Organization Issues.

    ERIC Educational Resources Information Center

    1999

    This document contains four symposium papers on learning organization issues. "How Action Learning Builds the Learning Organization: A Conceptual Analysis" (Michael Marquardt, Ty Alexander) is a systematic examination of four subsystems of learning organizations (learning dynamics, organization renewal, people empowerment, knowledge management)…

  8. ISSUES. Teacher Curriculum Guide.

    ERIC Educational Resources Information Center

    Mid-Continent Regional Educational Lab., Inc., Kansas City, MO.

    Innovative Social Studies: Urban Elementary Schools, known as ISSUES, is a social studies program actively pursuing the profound social problems of our times by daily student involvement with solutions as part of the curriculum. Upper elementary and junior high students increase their understanding in active participation in community problem…

  9. Chemistry from Issues.

    ERIC Educational Resources Information Center

    Harding, Jan; Donaldson, Jim

    1986-01-01

    Describes the "Chemistry from Issues" project at Chelsea College. Provides the background information, rationale, and overall structure of a proposed course about the importance of chemistry to common culture. Outlines one module about the British steel industry that has been taught at King's College. (TW)

  10. Addressing Student Life Issues.

    ERIC Educational Resources Information Center

    Kolvitz, Marcia, Ed.

    These two conference papers from the Biennial Conference on Postsecondary Education for Persons who are Deaf or Hard of Hearing focus on campus life issues for individuals with deafness or hard of hearing. The first paper, "A Customized Residence Hall Experience for Students Who Are Deaf or Hard of Hearing" (Nancy Kasinski and others), describes…

  11. International Issues in Education

    ERIC Educational Resources Information Center

    Ruggeri, Kai; Diaz, Carmen; Kelley, Karl; Papousek, Ilona; Dempster, Martin; Hanna, Donncha

    2008-01-01

    Anxiety, negative attitudes, and attrition are all issues presented in the teaching of statistics to undergraduates in research-based degrees regardless of location. Previous works have looked at these obstacles, but none have consolidated a multilingual, multinational effort using a consistent method. Over 400 Spanish-, English-, and…

  12. Critical Endowment Policy Issues

    ERIC Educational Resources Information Center

    Lapovsky, Lucie

    2007-01-01

    Governing boards and administrations wrestle with complex endowment policy decisions that will determine current institutional quality and future institutional viability. This chapter presents data from the 2006 NACUBO Endowment Study (published in 2007), divided into the following issues of endowment management: historical returns; endowment…

  13. Women and Performance Issue.

    ERIC Educational Resources Information Center

    Kirby, Michael, Ed.

    1980-01-01

    The diversity of important work being done by women in many aspects of theatrical performance in the United States is illustrated in this journal issue. The nine articles provide discussions of the following: (1) women's careers, images, and movements in the American theatre; (2) the evolution of La Mama, an off-off-Broadway theatre group begun in…

  14. Perspectives on Current Issues.

    ERIC Educational Resources Information Center

    Brown, Hank; And Others

    1995-01-01

    Encapsulates several brief articles providing perspectives from the states, the 104th Congress, the Supreme Court, and the White House. Issues covered include the Unfunded Mandates Reform Act and the White House attempts to reduce the federal workforce. Authors include Hank Brown, Rita G. Koman, James L. Martin, and Joseph R. Marbach. (MJP)

  15. Issues of Gender. Symposium.

    ERIC Educational Resources Information Center

    2002

    This symposium is comprised of three papers on issues of gender in human resource development (HRD). "The Impact of Awareness and Action on the Implementation of a Women's Network" (Laura L. Bierema) reports on research to examine how gender consciousness emerges through the formation of in-company networks to promote corporate women's status. It…

  16. [Theme Issue: Communications Satellites.

    ERIC Educational Resources Information Center

    Howkins, John, Ed.

    1976-01-01

    One section of this journal is devoted to issues involving broadcast satellites. Separate articles discuss the need for international planning of satellite broadcasting, decisions made at the 1971 World Administrative Radio Conference for Space Telecommunications, potential problems in satellite broadcasting, a series of proposals drawn up by the…

  17. Workforce Issues Facing HRD.

    ERIC Educational Resources Information Center

    1995

    These four papers are from a symposium facilitated by Eugene Andette on work force issues facing human resources development (HRD) at the 1995 Academy of Human Resource Development conference. "Meaning Construction and Personal Transformation: Alternative Dimensions of Job Loss" (Terri A. Deems) reports a study conducted to explore the ways…

  18. Individual Learning Issues.

    ERIC Educational Resources Information Center

    1999

    These three papers are from a symposium on individual learning issues. "A Quantitative Examination of the Feelings and Cognitive Processes of a Group of Adults Undertaking a Tertiary HRD [Human Resource Development] Program" (Bryan W. Smith) examines mental and emotional states of adults in a tertiary HRD learning situation by using stimulated…

  19. Evaluation Issues in HRD.

    ERIC Educational Resources Information Center

    1996

    These three papers were presented at a symposium on evaluation issues on human resource development (HRD) moderated by Hallie Preskill at the 1996 conference of the Academy of Human Resource Development. "Designing an Effective 360-Degree Appraisal Feedback Process" (David Antonioni) presents a conceptual model for a 360-degree appraisal feedback…

  20. Randomization and sampling issues

    USGS Publications Warehouse

    Geissler, P.H.

    1996-01-01

    The need for randomly selected routes and other sampling issues have been debated by the Amphibian electronic discussion group. Many excellent comments have been made, pro and con, but we have not reached consensus yet. This paper brings those comments together and attempts a synthesis. I hope that the resulting discussion will bring us closer to a consensus.

  1. Assistive Technologies, Feature Issue.

    ERIC Educational Resources Information Center

    Wobschall, Rachel, Ed.; Lakin, Charlie, Ed.

    1995-01-01

    This feature issue of a newsletter on community integration of individuals with developmental disabilities considers the role of assistive technologies. It describes efforts to utilize consumer direction, public policy, creativity, energy, and professional know-how in the pursuit of technology-based opportunities to enhance community inclusion,…

  2. National Issues Forums

    ERIC Educational Resources Information Center

    Parkins, Leslie

    2006-01-01

    Demonstrating an appreciation for the perspectives of others is now recognized as one of the single most important learning outcomes of a college education. This skill, fundamental to democracy and civic engagement, is honed in college by institutions that provide opportunities for students to interact with their peers and others on issues that…

  3. Issues of HRD. Symposium.

    ERIC Educational Resources Information Center

    2002

    This document contains three papers from a symposium on issues of human resource development (HRD). "The Complex Roots of Human Resource Development" (Monica Lee) discusses the roots of HRD within the framework of the following views of management: (1) classic (the view that managers must be able to create appropriate rules and procedures for…

  4. Issues in Evaluation.

    ERIC Educational Resources Information Center

    Bottomley, A. Keith

    This paper examines practical and theoretical problems and issues that arose during evaluation of an adventure program for young offenders. During 1989-93, the Sail Training Association and the Humberside (England) Probation Service collaborated on a project in which probation clients aged 17-25 made sailing voyages across the North Sea or around…

  5. Columbia Quincentenary. Special Issue.

    ERIC Educational Resources Information Center

    Foard, Douglas, Ed.; Regoli, Michael, Ed.

    1991-01-01

    This special theme issue of the OAH Magazine of History contains articles that present a variety of perspectives on the Columbian Quincentenary--the 500th anniversary of Christopher Columbus's voyages of discovery. The articles include: "Exploring the Columbian Quincentenary through Historiography" (John Hebert); "Science, Religion, and Columbus's…

  6. Measurement Issues in Assessment

    ERIC Educational Resources Information Center

    Volkwein, J. Fredericks; Yin, Alexander C.

    2010-01-01

    This chapter summarizes ten selected issues and common problems that arise in most assessment research projects. These include: (1) the uses of grades in assessment; (2) institutional review boards; (3) research design as a compromise; (4) standardized testing; (5) self-reported measures; (6) missing data; (7) weighting data; (8) conditional…

  7. Current Issues in Reading.

    ERIC Educational Resources Information Center

    French, Michael P., Ed.

    1985-01-01

    Articles in this journal issue focus on reading acquisition and instruction. The titles and authors are as follows: (1) "10 Good Ways to Involve Parents in the Reading Program," by Nickolas Criscuolo; (2) "A Parent Guide for Helping the Child with A Reading Disability," by Frederick Duffelmeyer and Dale Baum; (3) "Promoting a Good Attitude toward…

  8. Issues in Reading Instruction.

    ERIC Educational Resources Information Center

    Ediger, Marlow

    Presently, reading is much discussed by senators, representatives, and state legislatures--the debate is on the following issues in reading instruction: (1) having all students in public school achieve at grade level as a reading minimum; (2) accountability of teachers for student achievement; (3) teachers having high achievement expectations from…

  9. Etude theorique et experimentale des evaporateurs de dioxyde de carbone operant dans des conditions de givrage

    NASA Astrophysics Data System (ADS)

    Bendaoud, Adlane Larbi

    Les evaporateurs de refrigeration sont surtout du type tube a ailettes, appeles serpentins, et fonctionnent dans l'une des conditions suivantes: seche, humide ou avec formation de givre. Il a ete demontre que la formation du givre sur la paroi exterieure de l'echangeur engendre une surconsommation energetique a cause des operations de degivrage puisque 15 a 20% seulement de la chaleur produite sert au degivrage tandis que le reste est dissipee dans l'environnement [1]. Avec l'avenement des nouveaux refrigerants, moins nocifs envers l'environnement, l'industrie du froid se trouve penalisee du fait que peu ou pas de composantes mecaniques (compresseur, pompe, echangeur...etc.) adaptees sont disponibles [3]. Il s'agit pour la communaute des frigoristes de combler ce retard technologique en redeveloppant ces composantes mecaniques afin qu'elles soient adaptees aux nouveaux refrigerants. Dans cette optique, et afin de mieux comprendre le comportement thermique des evaporateurs au CO2 fonctionnant dans des conditions seches, qu'un groupe de chercheurs du CanmetENERGIE avaient lance, en 2000, un programme de R & D. Dans le cadre de programme un outil de simulation des evaporateurs au CO2 a ete developpe et un banc d'essai contenant une boucle secondaire de refrigeration utilisant le CO2 comme refrigerant a ete construit. Comme continuite de ce travail de recherche, en 2006 ce meme groupe de recherche a lance un nouveau projet qui consiste a faire une etude theorique et experimentale des evaporateurs au CO2 operants dans des conditions de givrage. Et, c'est exactement dans le cadre de ce projet que se positionne ce travail de these. Ce travail de recherche a ete entrepris pour mieux comprendre le comportement thermique et hydrodynamique des serpentins fonctionnant dans des conditions de givrage, l'effet des circuits de refrigerant ainsi que celui des parametres geometriques et d'operation. Pour cela, un travail theorique supporte par une etude experimentale a ete effectue

  10. Effets des electrons secondaires sur l'ADN

    NASA Astrophysics Data System (ADS)

    Boudaiffa, Badia

    Les interactions des electrons de basse energie (EBE) representent un element important en sciences des radiations, particulierement, les sequences se produisant immediatement apres l'interaction de la radiation ionisante avec le milieu biologique. Il est bien connu que lorsque ces radiations deposent leur energie dans la cellule, elles produisent un grand nombre d'electrons secondaires (4 x 104/MeV), qui sont crees le long de la trace avec des energies cinetiques initiales bien inferieures a 20 eV. Cependant, il n'y a jamais eu de mesures directes demontrant l'interaction de ces electrons de tres basse energie avec l'ADN, du principalement aux difficultes experimentales imposees par la complexite du milieu biologique. Dans notre laboratoire, les dernieres annees ont ete consacrees a l'etude des phenomenes fondamentaux induits par impact des EBE sur differentes molecules simples (e.g., N2, CO, O2, H2O, NO, C2H 4, C6H6, C2H12) et quelques molecules complexes dans leur phase solide. D'autres travaux effectues recemment sur des bases de l'ADN et des oligonucleotides ont montre que les EBE produisent des bris moleculaires sur les biomolecules. Ces travaux nous ont permis d'elaborer des techniques pour mettre en evidence et comprendre les interactions fondamentales des EBE avec des molecules d'interet biologique, afin d'atteindre notre objectif majeur d'etudier l'effet direct de ces particules sur la molecule d'ADN. Les techniques de sciences des surfaces developpees et utilisees dans les etudes precitees peuvent etre etendues et combinees avec des methodes classiques de biologie pour etudier les dommages de l'ADN induits par l'impact des EBE. Nos experiences ont montre l'efficacite des electrons de 3--20 eV a induire des coupures simple et double brins dans l'ADN. Pour des energies inferieures a 15 eV, ces coupures sont induites par la localisation temporaire d'un electron sur une unite moleculaire de l'ADN, ce qui engendre la formation d'un ion negatif transitoire

  11. Managing Time, Workload and Costs in Distance Education: Findings from a Literature Review of "Distances et Médiations des Savoirs" (Formerly "Distances et Savoirs")

    ERIC Educational Resources Information Center

    Moeglin, Pierre; Vidal, Martine

    2015-01-01

    The purpose of this review, spanning over 12 years of publication of "Distances et Médiations des Savoirs" ("DMS"), formerly "Distance et Savoirs" ("DMS") (2003-2014), is guided by the question why and how French-speaking researchers addressed the issues of time, workload and costs in distance learning, and…

  12. The "Conservatoire National des Arts et Metiers"

    ERIC Educational Resources Information Center

    Kuhn, Gerard

    2004-01-01

    The overall mission of the Conservatoire national des arts et metiers--(CNAM) [National Conservatory of Industrial Arts and Trades] is outlined. One of its centers, the "Centre national de l'entrepreneuriat"--(CNE) [National Center for Entrepreneurship] is described in greater detail. In particular, this center offers various services, notably…

  13. Fiabilité des structures mécaniques adaptatives: effet de la panne des actionneurs ou des capteurs sur la stabilité

    NASA Astrophysics Data System (ADS)

    Fall, H.; Charon, W.; Kouta, R.

    2002-12-01

    Ces dernières décennies, des activités significatives dans le monde étaient dirigées autour du contrôle actif. Le but de ces recherches était essentiellement d'améliorer les performances, la fiabilité et la sécurité des systèmes. Notamment dans le cas des structures soumises à des vibrations aléatoires. D'importants travaux ont été consacré à l'utilisation des “matériaux intelligents” comme capteurs et actionneurs. Cette article propose l'analyse de la fiabilité des systèmes mécaniques en étudiant les pannes des actionneurs ou des capteurs. L'effet de ces pannes sur la stabilité et la performance du système y est démontré. Les méthodologies de conception y sont rappelées. Des exemples numériques sont fournis à travers le contrôle d'un panneau sous chargement dynamique pour illustrer la méthode proposée.

  14. PREFACE: CEWQO Topical Issue CEWQO Topical Issue

    NASA Astrophysics Data System (ADS)

    Bozic, Mirjana; Man'ko, Margarita

    2009-09-01

    This topical issue of Physica Scripta collects selected peer-reviewed contributions based on invited and contributed talks and posters presented at the 15th Central European Workshop on Quantum Optics (CEWQO) which took place in Belgrade 29 May-3 June 2008 (http://cewqo08.phy.bg.ac.yu). On behalf of the whole community took place in Belgrade 29 May-3 June 2008 (http://cewqo08.phy.bg.ac.yu, cewqo08.phy.bg.ac.yu). On behalf of the whole community of the workshop, we thank the referees for their careful reading and useful suggestions which helped to improve all of the submitted papers. A brief description of CEWQO The Central European Workshop on Quantum Optics is a series of conferences started informally in Budapest in 1992. Sometimes small events transform into important conferences, as in the case of CEWQO. Professor Jozsef Janszky, from the Research Institute of Solid State Physics and Optics, is the founder of this series. Margarita Man'ko obtained the following information from Jozsef Janszky during her visit to Budapest, within the framework of cooperation between the Russian and Hungarian Academies of Sciences in 2005. He organized a small workshop on quantum optics in Budapest in 1992 with John Klauder as a main speaker. Then, bearing in mind that a year before Janszky himself was invited by Vladimir Buzek to give a seminar on the same topic in Bratislava, he decided to assign the name 'Central European Workshop on Quantum Optics', considering the seminar in Bratislava to be the first workshop and the one in Budapest the second. The third formal workshop took place in Bratislava in 1993 organized by Vladimir Buzek, then in 1994 (Budapest, by Jozsef Janszky), 1995 and 1996 (Budmerice, Slovakia, by Vladimir Buzek), 1997 (Prague, by Igor Jex), 1999 (Olomouc, Czech Republic, by Zdenek Hradil), 2000 (Balatonfüred, Hungary, by Jozsef Janszky ), 2001 (Prague, by Igor Jex), 2002 (Szeged, Hungary, by Mihaly Benedict), 2003 (Rostock,Germany, by Werner Vogel and

  15. Advertising in This Issue

    NASA Astrophysics Data System (ADS)

    1999-09-01

    If you would like additional information about the products of the advertisers in this issue, the quickest and easiest way is via JCE Online's new service: Ad Index This will take you to the list of advertisers, each conveniently linked to their home page. To get advertising information via mail, fax, or email, refer to the top portion of the Readers Service Card inserted in the print issue. Whatever method of communication you use, be sure to mention to advertisers that you saw their ad in the Journal of Chemical Education. Advertising Representative McNeill Group, Inc. · 301 Oxford Valley Road, Suite 804 Yardley, PA 19067 · phone: 215/321-9662 or 800/275-5084 fax: 215/321-9636; email: jchemed@mcneill-group.com

  16. Advertising in This Issue

    NASA Astrophysics Data System (ADS)

    1999-11-01

    If you would like additional information about the products of the advertisers in this issue, the quickest and easiest way is via JCE Online's new service: Ad Index This will take you to the list of advertisers, each conveniently linked to their home page. To get advertising information via mail, fax, or email, refer to the top portion of the Readers Service Card inserted in the print issue. Whatever method of communication you use, be sure to mention to advertisers that you saw their ad in the Journal of Chemical Education. Advertising Representative McNeill Group, Inc. · 301 Oxford Valley Road, Suite 804 Yardley, PA 19067 · phone: 215/321-9662 or 800/275-5084 fax: 215/321-9636; email: jchemed@mcneill-group.com

  17. Advertising in This Issue

    NASA Astrophysics Data System (ADS)

    1999-10-01

    If you would like additional information about the products of the advertisers in this issue, the quickest and easiest way is via JCE Online's new service: Ad Index This will take you to the list of advertisers, each conveniently linked to their home page. To get advertising information via mail, fax, or email, refer to the top portion of the Readers Service Card inserted in the print issue. Whatever method of communication you use, be sure to mention to advertisers that you saw their ad in the Journal of Chemical Education. Advertising Representative McNeill Group, Inc. · 301 Oxford Valley Road, Suite 804 Yardley, PA 19067 · phone: 215/321-9662 or 800/275-5084 fax: 215/321-9636; email: jchemed@mcneill-group.com

  18. Advertising in This Issue

    NASA Astrophysics Data System (ADS)

    1999-12-01

    If you would like additional information about the products of the advertisers in this issue, the quickest and easiest way is via JCE Online's new service: Ad Index This will take you to the list of advertisers, each conveniently linked to their home page. To get advertising information via mail, fax, or email, refer to the top portion of the Readers Service Card inserted in the print issue. Whatever method of communication you use, be sure to mention to advertisers that you saw their ad in the Journal of Chemical Education. Advertising Representative McNeill Group, Inc. · 301 Oxford Valley Road, Suite 804 Yardley, PA 19067 · phone: 215/321-9662 or 800/275-5084 fax: 215/321-9636; email: jchemed@mcneill-group.com

  19. Spaceport Hawaii - Environmental issues

    SciTech Connect

    Hayward, T.B. )

    1992-03-01

    The geographical, economic, and infrastructural factors of the Island of Hawaii make this island an ideal site for a privately owned and operated commercial launching facility for launching small- to medium-sized payloads into both equatorial and polar orbits. This paper describes the preparation of an environmental impact statement, which was initiated as a prelude to the eventual construction and operation of the commercial launching facility on the Island of Hawaii and which follows the Hawaii State law and the National Environmental Policy Act. The issues discussed are the regional characteristics of the Island of Hawaii, the candidate launch vehicles, the flight safety considerations, the spaceport development issues, and the potential impact of the future spaceport on the Mauna Kea Observatory on the Island of Hawaii.

  20. Issues Management Tool

    Energy Science and Technology Software Center (ESTSC)

    2010-12-31

    IMTool performs the following: • The IMTool can manage issues, actions, and activities from one screen. • Provides enhanced and intuitive searching, sorting, and filtering capabilities. Grids allow for filtering any column instantly by any data heading. • IMTool uses drop-down menus to ensure date is entered accurately with consistency. • User-friendly system – highly utilized commitment tracking screen functions. Information is viewed on the left side of the screen and managed on the right.

  1. JPRS report proliferation issues

    SciTech Connect

    1991-12-13

    This report contains foreign media information on issues related to worldwide proliferation and transfer activities in nuclear, chemical, and biological weapons, including delivery systems and the transfer of weapons relevant technologies. The following locations are included: (1) South Africa; (2) China; (3) North and South Korea, Taiwan; (4) Hungary; (5) Brazil; (6) India, Iran, Israel, Pakistan; (7) Soviet Union; and (8) Austria, Germany, United Kingdom.

  2. JPRS report proliferation issues

    SciTech Connect

    1991-11-07

    This report contains foreign media information on issues related to worldwide proliferation and transfer activities in nuclear, chemical, and biological weapons, including delivery systems and the transfer of weapons relevant technologies. The following locations are included: (1) South Africa; (2) China; (3) North and South Korea, Japan; (4) Bulgaria, Czechoslovakia; (5) Argentina, Brazil; (6) India, Iran, Israel, Pakistan, Libya, Iraq, Egypt; (7) Soviet Union; and (8) Belgium, Germany, United Kingdom, Netherlands, France.

  3. JPRS report proliferation issues

    SciTech Connect

    1991-12-02

    This report contains foreign media information on issues related to worldwide proliferation and transfer activities in nuclear, chemical, and biological weapons, including delivery systems and the transfer of weapons relevant technologies. The following locations are included: (1) South Africa; (2) China; (3) North and South Korea, Taiwan; (4) Hungary, Yugoslavia; (5) Brazil, Argentina; (6) Afghanistan, India, Iran, Iraq, Israel, Pakistan; (7) Soviet Union; and (8) France, Germany, Italy, Switzerland.

  4. JPRS report proliferation issues

    SciTech Connect

    1991-09-27

    This report contains foreign media information on issues related to worldwide proliferation and transfer activities in nuclear, chemical, and biological weapons, including delivery systems and the transfer of weapons relevant technologies. The following locations are included: (1) South Africa, Namibia; (2) China; (3) South Korea, Australia, Indonesia, Japan, Philippines; (4) Yugoslavia; (5) Brazil, Argentina, Cuba; (6) India, Libya, Pakistan; (7) Soviet Union; and (8) France, Germany, Netherlands.

  5. Ethical issues in psychopharmacology

    PubMed Central

    McHenry, L

    2006-01-01

    The marketing of selective serotonin reuptake inhibitors in the psychopharmacological industry presents a serious moral problem for the corporate model of medicine. In this paper I examine ethical issues relating to the efficacy and safety of these drugs. Pharmaceutical companies have a moral obligation to disclose all information in their possession bearing on the true risks and benefits of their drugs. Only then can patients make fully informed decisions about their treatment. PMID:16816041

  6. Neonatal resuscitation: Current issues

    PubMed Central

    Chadha, Indu A

    2010-01-01

    The following guidelines are intended for practitioners responsible for resuscitating neonates. They apply primarily to neonates undergoing transition from intrauterine to extrauterine life. The updated guidelines on Neonatal Resuscitation have assimilated the latest evidence in neonatal resuscitation. Important changes with regard to the old guidelines and recommendations for daily practice are provided. Current controversial issues concerning neonatal resuscitation are reviewed and argued in the context of the ILCOR 2005 consensus. PMID:21189881

  7. Utility terrestrial biodiversity issues

    SciTech Connect

    Breece, G.A.; Ward, B.J.

    1996-11-01

    Results from a survey of power utility biologists indicate that terrestrial biodiversity is considered a major issued by only a few utilities; however, a majority believe it may be a future issue. Over half of the respondents indicated that their company is involved in some management for biodiversity, and nearly all feel that it should be a goal for resource management. Only a few utilities are funding biodiversity research, but a majority felt more research was needed. Generally, larger utilities with extensive land holdings had greater opportunities and resources for biodiversity management. Biodiversity will most likely be a concern with transmission rights-of-way construction and maintenance, endangered species issues and general land resource management, including mining reclamation and hydro relicensing commitments. Over half of the companies surveyed have established voluntary partnerships with management groups, and biodiversity is a goal in nearly all the joint projects. Endangered species management and protection, prevention of forest fragmentation, wetland protection, and habitat creation and protection are the most common partnerships involving utility companies. Common management practices and unique approaches are presented, along with details of the survey. 4 refs.

  8. Profil epidemiologique des brulures d'enfants admis au Centre National des Brules, Maroc

    PubMed Central

    Zahid, A.; Atannaz, J.; Alaoui, M.; Rafik, A.; Ezzoubi, M.; Diouri, M.; Chlihi, A.; Bahechar, N.; Boukind, E.H.

    2011-01-01

    Summary Ce travail rétrospectif analyse les particularités épidémiologiques de 543 cas de brûlures d'enfants, représentant 45,7% des admissions de notre centre, en vue de déterminer les éléments pouvant contribuer à renforcer la prévention, qui reste le traitement de choix de cette pathologie. La moyenne d'âge est de 4,25 ans avec une prédilection pour la tranche d'âge d'un à cinq ans, avec 42,5% des cas. Une atteinte masculine est retrouvée dans 63,5% des cas. La brûlure survient à domicile dans 85,1% et accidentellement dans 95% des cas. Les brûlures thermiques représentent 96,5% des causes dominées par les liquides dans 69,3% des cas. La surface cutanée brûlée est ≥ 20% dans 52,3%. La brûlure intéresse essentiellement les membres supérieurs (79,1%). 56,8% des enfants sont transférés par d'autres hôpitaux et le délai de prise en charge hospitalière est supérieur à 6 heures dans 65,5%. Le taux de mortalité a été de 13,2%. PMID:22639559

  9. Les effets des interfaces sur les proprietes magnetiques et de transport des multicouches nickel/iron et cobalt/silver

    NASA Astrophysics Data System (ADS)

    Veres, Teodor

    Cette these est consacree a l'etude de l'evolution structurale des proprietes magnetiques et de transport des multicouches Ni/Fe et nanostructures a base de Co et de l'Ag. Dans une premiere partie, essentiellement bibliographique, nous introduisons quelques concepts de base relies aux proprietes magnetiques et de transport des multicouches metalliques. Ensuite, nous presentons une breve description des methodes d'analyse des resultats. La deuxieme partie est consacree a l'etude des proprietes magnetiques et de transport des multicouches ferromagnetiques/ferromagnetiques Ni/Fe. Nous montrerons qu'une interpretation coherente de ces proprietes necessite la prise en consideration des effets des interfaces. Nous nous attacherons a mettre en evidence, a evaluer et a etudier les effets de ces interfaces ainsi que leur evolution, et ce, suite a des traitements thermiques tel que le depot a temperature elevee et l'irradiation ionique. Les analyses correlees de la structure et de la magnetoresistance nous permettront d'emettre des conclusions sur l'influence des couches tampons entre l'interface et le substrat ainsi qu'entre les couches elles-memes sur le comportement magnetique des couches F/F. La troisieme partie est consacree aux systemes a Magneto-Resistance Geante (MRG) a base de Co et Ag. Nous allons etudier l'evolution de la microstructure suite a l'irradiation avec des ions Si+ ayant une energie de 1 MeV, ainsi que les effets de ces changements sur le comportement magnetique. Cette partie debutera par l'analyse des proprietes d'une multicouche hybride, intermediaire entre les multicouches et les materiaux granulaires. Nous analyserons a l'aide des mesures de diffraction, de relaxation superparamagnetique et de magnetoresistance, les evolutions structurales produites par l'irradiation ionique. Nous etablirons des modeles qui nous aideront a interpreter les resultats pour une serie des multicouches qui couvrent un large eventail de differents comportements magnetiques

  10. Etude du processus de changement vecu par des familles ayant decide d'adopter volontairement des comportements d'attenuation des changements climatiques

    NASA Astrophysics Data System (ADS)

    Leger, Michel T.

    Les activites humaines energivores telles l'utilisation intensive de l'automobile, la surconsommation de biens et l'usage excessif d'electricite contribuent aux changements climatiques et autres problemes environnementaux. Bien que plusieurs recherches rapportent que l'etre humain est de plus en plus conscient de ses impacts sur le climat de la planete, ces memes recherches indiquent qu'en general, les gens continuent a se comporter de facon non ecologique. Que ce soit a l'ecole ou dans la communaute, plusieurs chercheurs en education relative a l'environnement estiment qu'une personne bien intentionnee est capable d'adopter des comportements plus respectueux de l'environnement. Le but de cette these etait de comprendre le processus d'integration de comportements d'attenuation des changements climatiques dans des familles. A cette fin, nous nous sommes fixe deux objectifs : 1) decrire les competences et les procedes qui favorisent l'adoption de comportements d'attenuation des changements climatiques dans des familles et 2) decrire les facteurs et les dynamiques familiales qui facilitent et limitent l'adoption de comportements d'attenuation des changements climatiques dans des familles. Des familles ont ete invitees a essayer des comportements personnels et collectifs d'attenuation des changements climatiques de sorte a integrer des modes de vie plus ecologiques. Sur une periode de huit mois, nous avons suivi leur experience de changement afin de mieux comprendre comment se produit le processus de changement dans des familles qui decident volontairement d'adopter des comportements d'attenuation des changements climatiques. Apres leur avoir fourni quelques connaissances de base sur les changements climatiques, nous avons observe le vecu de changement des familles durant huit mois d'essais a l'aide de journaux reflexifs, d'entretiens d'explicitation et du journal du chercheur. La these comporte trois articles scientifiques. Dans le premier article, nous presentons une

  11. Measuring Involvement with Social Issues.

    ERIC Educational Resources Information Center

    Nowak, Glen J.; Salmon, Charles T.

    A study applied research concepts from consumer product involvement to test a model for research on involvement with social issues. Issue involvement was defined as the state or level of perceived importance and/or interest evoked by a stimulus (issue) within a specific situation. Attitudes on four social issues--abortion, pornography, the…

  12. In This Issue

    NASA Astrophysics Data System (ADS)

    1996-08-01

    Coda This issue of the Journal, the last to be produced by the editorial staff in Austin, is remarkable only in the sense that each issue of this Journal is remarkable. In it teachers of chemistry share information, advice, and ideas that encompass a range as wide as chemistry itself. The Journal has always been a venue where the only important thread of commonalty was the goal of helping teachers--providing a "living textbook of chemistry", as it was dubbed by its founders. This textbook is different, however--it is written by its own readers and it has a new "edition" each month. This month's edition typifies the range of topics and issues found important by our readers (and authors): information about new ideas and research advances, new ways to look at and present the information we have, experiments and demonstrations to give students a first-hand exposure to chemistry, computer exercises to introduce those things that cannot be (or are too dangerous to be) presented first-hand, and ideas for better teaching techniques and classroom organization. With such a purview, it is no wonder that the articles in this issue range from the second law of thermodynamics (Frohlich, page 716) to building a Tesla coil from a car coil (Hall and Battino, page 817) and touch on such consequential topics as mimicking nature (Dennison and Harrowven, page 697) and the search for a silicon-based LED (Swisher, Richmond, and Sercel, page 738). New information about research is represented by part III of the series on electrospray ionization mass spectrometry (Hop and Bakhtiar, page A162). Senozan and Devore (page 767) look at data already long known about carbon monoxide poisoning and present a more subtle and complex explanation of the process than is usually seen in introductory texts. A really new way of looking at what we already know is the unique approach that Ginebreda (page 708) takes to waste recovery, applying the formalisms of thermodynamics to economic considerations

  13. Community Environmental Response Facilitation Act (CERFA) report. Fort Des Moines, Des Moines, Iowa. Final report

    SciTech Connect

    Young, B.; Rausch, K.; Kang, J.

    1994-04-01

    This report presents the results of the Community Environmental Response Facilitation Act (CERFA) investigation conducted by The Earth Technology Corporation (TETC) at the Fort Des Moines, a U.S. Government property selected for closure by the Base Realignment and Closure (BRAC) Commission. Under CERFA Federal agencies are required to identify real property that can be immediately reused and redeveloped. Satisfying this objective requires the identification of real property where no hazardous substances or petroleum products, regulated by the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), were stored for one year or more, known to have been released, or disposed. Fort Des Moines is a 53.28-acre site located in Polk County, Iowa, within the city limits of Des Moines. The installation's primary mission is to provide support and shelter for the U.S. Army Reserve. Activities associated with the property that have environmental significance are photographic processing, vehicle maintenance, printing, and fuel storage. TETC reviewed existing investigation documents; U.S. Environmental Protection Agency (USEPA), State, and county regulatory records; environmental data bases; and title documents pertaining to Fort Des Moines during this investigation. In addition, TETC conducted interviews and visual inspections of Fort Des Moines as well as visual inspections and data base searches for the surrounding properties. Information in this CERFA Report was current as of April 1994.

  14. AIDS--legal issues.

    PubMed

    Kirby, M

    1988-01-01

    Legal issues worldwide prompted by the AIDS epidemic are discussed, in a general way, since legal systems vary widely in different countries and localities. WHO publishes a tabulation of legal instruments dealing with AIDS and HIV infection. Criminal laws intended to protect people from harm from HIV infection have been enacted, such as a penalty for unprotected sexual intercourse by infected persons, in some Australian states. Knowing spread of HIV already amounts to a crime in many systems. The U.S. Supreme Court has already ruled that states do not violate the constitution for punishing homosexuals for consensual sodomy, nor the Army for discharging homosexuals. Quarantine law is a civil matter, but may provide penalties stricter than criminal penalties, without as much protection. No quarantines against AIDS have been enacted, although some countries require screening of immigrants. Legal issues regarding screening, liability of suppliers of blood products, and tracing of sexual partners are much discussed. Stigmatization of minority and alienated groups such as homosexuals, prostitutes, migrants, drug users and prisoners is a tricky legal problem. The apparent failure of the criminalization of drug users and how to contain the spread of AIDS into the drug free population may prompt drastic new solutions. Other legal issues drawing attention include regulation of health insurance, changes in family law, pre-marriage HIV tests, screening for HIV ostensibly to detect HIV-associated dementia, liability protection for developers and testers of vaccines, and euthanasia and the treatment of the deceased. The legal system tends to lag behind medicine. In the case of AIDS, it cannot afford to delay, therefore effective legal strategies will include effective media presentation of AIDS information to the general public; ready and cheap supply of condoms; and a new approach to illegal drugs. PMID:3147672

  15. Authoring Issues beyond Tools

    NASA Astrophysics Data System (ADS)

    Spierling, Ulrike; Szilas, Nicolas

    Authoring is still considered a bottleneck in successful Interactive Storytelling and Drama. The claim for intuitive authoring tools is high, especially for tools that allow storytellers and artists to define dynamic content that can be run with an AI-based story engine. We explored two concrete authoring processes in depth, using various Interactive Storytelling prototypes, and have provided feedback from the practical steps. The result is a presentation of general issues in authoring Interactive Storytelling, rather than of particular problems with a specific system that could be overcome by 'simply' designing the right interface. Priorities for future developments are also outlined.

  16. Software Reuse Issues

    NASA Technical Reports Server (NTRS)

    Voigt, Susan J. (Editor); Smith, Kathryn A. (Editor)

    1989-01-01

    NASA Langley Research Center sponsored a Workshop on NASA Research in Software Reuse on November 17-18, 1988 in Melbourne, Florida, hosted by Software Productivity Solutions, Inc. Participants came from four NASA centers and headquarters, eight NASA contractor companies, and three research institutes. Presentations were made on software reuse research at the four NASA centers; on Eli, the reusable software synthesis system designed and currently under development by SPS; on Space Station Freedom plans for reuse; and on other reuse research projects. This publication summarizes the presentations made and the issues discussed during the workshop.

  17. Urinary tuberculosis: modern issues.

    PubMed

    Wise, Gilbert J

    2009-07-01

    Tuberculosis remains an epidemic that affects one third of the world's population. The persistence of this disease is caused by a large pool of immune-compromised and lower socioeconomic populations. The advent of rapid transportation and migration has contributed to the persistence of this disease in developed and less developed nations. The emergence of drug-resistant strains has added an additional factor for the pervasiveness of tuberculosis. The genitourinary system is a primary target for hematogenous infections. This paper reviews the contemporary issues that affect the diagnosis and treatment of urinary tuberculosis. PMID:19570494

  18. Technology transfer issue

    SciTech Connect

    Jacobson, C.

    1982-05-31

    Testimony by Lawrence J. Brady, Commerce Assistant Secretary for Trade Administration, at Congressional hearings on the national security issues of technology transfers to the Soviet Union identified steps the US needs to take to deal effectively with the problem. These steps include an understanding of how the Soviet Union has and will benefit militarily by acquiring Western technology and efforts to work with other countries, counterintelligence agencies, and industries to stem the flow of technological information. Brady outlined changes in technology development that complicate the enforcement of transfer rules, and emphasized the importance of a close relationship between the business community and the Commerce Department. (DCK)

  19. Maintenance simulation: Software issues

    SciTech Connect

    Luk, C.H.; Jette, M.A.

    1995-07-01

    The maintenance of a distributed software system in a production environment involves: (1) maintaining software integrity, (2) maintaining and database integrity, (3) adding new features, and (4) adding new systems. These issues will be discussed in general: what they are and how they are handled. This paper will present our experience with a distributed resource management system that accounts for resources consumed, in real-time, on a network of heterogenous computers. The simulated environments to maintain this system will be presented relate to the four maintenance areas.

  20. [Organ allocation. Ethical issues].

    PubMed

    Cattorini, P

    2010-01-01

    The criteria for allocating organs are one of the most debated ethical issue in the transplantation programs. The article examines some rules and principles followed by "Nord Italia Transplant program", summarized in its Principles' Charter and explained in a recent interdisciplinary book. General theories of justice and their application to individual clinical cases are commented and evaluated, in order to foster a public, democratic, transparent debate among professionals and citizens, scientific associations and customers' organizations. Some specific moral dilemmas are focused regarding the concepts of proportionate treatment, unselfish donation by living persons, promotion of local institutions efficiency. PMID:20677677

  1. The money issue.

    PubMed

    Carpenter, Dave; Haugh, Richard

    2003-06-01

    Volume is rising at a healthy pact. Technology is improving patient care. Many organizations have, out of necessity, strengthened business fundamentals, controlled costs and refined their focus. Yet not-for-profit hospitals are squeezed by a cash crunch that has balance sheets under pressure and credit downgrades outpacing upgrades--the result of shrinking investment income, rising pension obligations, low government reimbursement and other threats to operational stability. N&HN looks at the challenges, including recent fallout from the most pressing issues, how some systems have responded, and the pros and cons of borrowing now. PMID:12838881

  2. Etude des phenomenes de penetration des especes chimiques dans les revetements cathodiques des cuves d'electrolyse de l'aluminium

    NASA Astrophysics Data System (ADS)

    Brisson, Pierre-Yves

    Cette these decrit l'etude effectuee sur les phenomenes d'insertion du sodium et de penetration du bain electrolytique dans les revetements cathodiques des cuves d'electrolyse de l'aluminium. L'etude fut effectuee a l'aide d'un montage permettant d'effectuer l'electrolyse en laboratoire. Trois types de revetement cathodiques furent etudies : des blocs semi-graphitique, des blocs graphitiques et des blocs graphitises. L'insertion du sodium dans les trois differents types de blocs fut etudiee a l'aide de la spectrometrie des photoelectrons X (XPS). L'analyse a permis de mettre en evidence deux formes de sodium dans l'anthracite et la phase liante des materiaux semi-graphitiques et graphitiques, indiquant qu'une fraction du sodium se retrouve sous forme adsorbee dans les micropores des materiaux alors que l'autre fraction est inseree dans la structure cristalline du carbone. Dans les phases graphitiques (materiaux graphitises et graphitiques), seuls les micropores sont occupes par le sodium Ce resultat explique la tendance observee selon laquelle l'ajout de graphite dans les blocs permet d'abaisser le gonflement sodique. Les mecanismes de penetration du bain dans le reseau poreux des materiaux furent etudies en microscopie electronique et en diffraction des rayons X sur des echantillons apres differents temps d'electrolyses et en variant l'atmosphere (soit sous argon ou sous azote). Ces analyses ont permis d'identifier le mecanisme conduisant a la mouillabilite du bain sur le carbone en fonction de l'atmosphere entourant l'electrolyse. Ainsi, sous azote, la formation de NaCN dans les pores des materiaux par reactions entre le sodium et l'azote permet une mouillabilite accrue du bain alors qu'en absence d'azote (sous argon), le carbure d'aluminium, formes a la surface des pores, joue un role similaire. Dans ce dernier cas, la penetration du bain est moins rapide etant donnee la necessite de toujours amener des especes contenant de l'aluminium en tete du front de

  3. EDITORIAL: Special Issue on Physical Units

    NASA Astrophysics Data System (ADS)

    Blackburn, David

    1994-01-01

    the base and derived units of physics still being open to debate. Giving weight and coherence to this issue is the collective experience of the authors. Individually, they have made important contributions to measurement, have taken part in the operations of national standards laboratories and in the work in which such laboratories collaborate. They are members of the committees which negotiate terms for the use and recognition, at national, regional and international level, of the units which industrial laboratories maintain. Just under half of them are members of the Comité Consultatif des Unites (CCU), the committee to which the Comité International des Poids et Mesures (CIPM), itself turns when it looks for advice on issues affecting the use of units. This issue deals with topics which are central to the decisions of the CIPM. This is an appropriate place, therefore, to mention the close interest which two members of the Comité International have taken in Metrologia and the unfailing support they have given it: Professor Dieter Kind and Professor Jan de Boer. As President of the Comité International, Professor Kind greatly influenced the decision that the Bureau International des Poids et Mesures should purchase Metrologia and did much to create the spirit of independent commentary in which the journal operates. Now that his retirement from his principal post as President of the Physikalisch-Technische Bundesanstalt, Braunschweig, approaches, I take this opportunity, on behalf of Metrologia, its readers and its Editorial Board, to wish him a happy retirement and hope that in the future he will still find time to take an interest in the affairs of the journal. Professor de Boer's contribution to measurement is long and distinguished. His membership of the CIPM began in 1954 and he was its Secretary from 1962 to 1989. He thus took part in the debate which resulted in the decision to launch Metrologia in 1965. As the sole person to hold office as President of the

  4. TRANSPLANTATION EN MASSE DES ORGANES ABDOMINAUX

    PubMed Central

    STARZL, T.

    2010-01-01

    Les transplantations multi-organes, comprenant les blocs foie-duodénum-pancréas, foie-estomac-duodénum-pancréas, et foie-intestin sont réalisées avec un succés croissant Ces techniques et leurs combinaisons variées de transplantation monobloc ne sont pas de pratique courante. Les techniques de prélévement, de conservation et de soins post-opératoires sont décrites pour la transplantation multi-organes compléte ainsi que pour les variantes incomplétes. Le probléme particulier à ce type de transplantation est celui de la transplantation intestinale, c’est-à-dire la transplantation d’un organe à composante lymphoréticulaire complexe ce qui peut provoquer un syndrome greffon contre hôte. Par erreur de conception, et un peu par esprit de systéme, les efforts par le passé étaient dirigés sur la modification et la destruction des systémes lymphoréticulaires grâce au traitement préalable du donneur ou des organes transplantés, par médicaments, radiation ou autres moyens. Actuellement, I’idée directrice est de garder intacte les systémes lymphoréticulaires qui deviennent alors le site d’une circulation à double sens aprés transplantation. Avec la puissante immunodépression que fournit le FK 506, les cellules lymphoréticulaires du donneur peuvent circuler chez le receveur sans créer de syndrome du greffon contre hôte clinique et les cellules de la greffe s’assimilent à celles du receveur (chimérisme local) sans provoquer de rejet. Même si I’on évite le rejet ou le syndrome greffon contre hôte, il existe, à côté de ces entités, des relations métaboliques entre les organes greffés ainsi qu’entre les organes greffés et les viscéres du receveur laissés en place, qui peuvent influencer I’avenir soit des organes greffés, soit des organes laissés en place. Parmi les échanges métaboliques les mieux connus actuellement, il y a les facteurs splanchniques hépatotrophes endogénes, dont I’insuline est la mieux

  5. Environmental issues in China

    SciTech Connect

    Travis, P.S.

    1991-10-01

    Global concern about the environment is increasing, and the People's Republic of China (PRC) is not immune from such concerns. The Chinese face issues similar to those of many other developing nations. The US Department of Energy is particularly interested in national and world pollution issues, especially those that may infringe on other countries' economic growth and development. The DOE is also interested in any opportunities that might exist for US technical assistance and equipment in combating environmental problems. Our studies of articles in the China Daily, and English-language daily newspaper published by the Chinese government, show that population, pollution, and energy are major concerns of the Chinese Communist Party. Thus this report emphasizes the official Chinese government view. Supporting data were also obtained from other sources. Regardless of the severity of their various environmental problems, the Chinese will only try to remedy those problems with the greatest negative effects on its developing economy. They will be looking for foreign assistance, financial and informational, to help implement solutions. With the Chinese government seeking assistance, the United States has an opportunity to export basic technical information, especially in the areas of pollution control and monitoring, oil exploration methods, oil drilling technology, water and sewage treatment procedures, hazardous waste and nuclear waste handling techniques, and nuclear power plant safety procedures. In those areas the US has expertise and extensive technical experience, and by exporting the technologies the US would benefit both economically and politically. 59 refs., 3 figs.

  6. Reformulated gasoline quality issues

    SciTech Connect

    Gonzalez, R.G.; Felch, D.E.; Edgar, M.D.

    1995-11-01

    One year ago, a panel of industry experts were interviewed in the November/December 1994 issue of Fuel Reformulation (Vol. 4, No. 6). With the focus then and now on refinery investments, the panelists were asked to forecast which refining processes would grow in importance. It is apparent from their response, and from other articles and discussions throughout the year, that hydroprocessing and catalytic conversion processes are synergistic in the overall refinery design, with flexibility and process objectives varying on a unit-by-unit case. To an extent, future refinery investments in downstream petrochemicals, such as for paraxylene production, are based on available catalytic reforming feedstock. Just a importantly, hydroprocessing units (hydrotreating, hydrocracking) needed for clean fuel production (gasoline, diesel, aviation fuel), are heavily dependent on hydrogen production from the catalytic reformer. Catalytic reforming`s significant influence in the refinery hydrogen balance, as well as its status as a significant naphtha conversion route to higher-quality fuels, make this unit a high-priority issue for engineers and planners striving for flexibility.

  7. A Magellanic origin of the DES dwarfs

    NASA Astrophysics Data System (ADS)

    Jethwa, P.; Erkal, D.; Belokurov, V.

    2016-09-01

    We establish the connection between the Magellanic Clouds (MCs) and the dwarf galaxy candidates discovered in the Dark Energy Survey (DES) by building a dynamical model of the MC satellite populations, based on an extensive suite of tailor-made numerical simulations. Our model takes into account the response of the Galaxy to the MCs infall, the dynamical friction experienced by the MCs and the disruption of the MC satellites by their hosts. The simulation suite samples over the uncertainties in the MC's proper motions, the masses of the MW and the Clouds themselves, and allows for flexibility in the intrinsic volume density distribution of the MC satellites. As a result, we can accurately reproduce the DES satellites' observed positions and kinematics. Assuming that Milky Way (MW) dwarfs follow the distribution of sub-haloes in Λ cold dark matter, we further demonstrate that, of 14 observed satellites, the MW halo contributes fewer than 4(8) of these with 68(95) per cent confidence and that 7(12) DES dwarfs have probabilities greater than 0.7(0.5) of belonging to the Large Magellanic Cloud (LMC). Marginalizing over the entire suite, we constrain the number of Magellanic satellites in the range -7 < MV < -1 which exceed the DES surface brightness threshold at ˜70, and the mass of the LMC around 1011 M⊙. The data also strongly support a first-infall scenario for the LMC. Finally, we give predictions for the line-of-sight velocities and the proper motions of the satellites discovered in the vicinity of the LMC.

  8. Early Results from the DES SN Survey

    NASA Astrophysics Data System (ADS)

    Scolnic, Daniel; Dark Energy Survey

    2016-01-01

    The Dark Energy Survey Supernova program (DES SN) has already discovered over 1000 Type Ia supernovae with well-sampled multi-color light curves in the redshift range 0.1 < z < 1.2. I will present an overview of the survey and show recent advances in our detection, photometry, calibration and spectroscopic follow-up pipelines. I will go over initial results from photometric classification of our sample and discuss methods used to reach measurements of cosmological parameters.

  9. A Magellanic Origin of the DES Dwarfs

    NASA Astrophysics Data System (ADS)

    Jethwa, P.; Erkal, D.; Belokurov, V.

    2016-06-01

    We establish the connection between the Magellanic Clouds (MCs) and the dwarf galaxy candidates discovered in the Dark Energy Survey (DES) by building a dynamical model of the MC satellite populations, based on an extensive suite of tailor-made numerical simulations. Our model takes into account the response of the Galaxy to the MCs infall, the dynamical friction experienced by the MCs and the disruption of the MC satellites by their hosts. The simulation suite samples over the uncertainties in the MC's proper motions, the masses of the MW and the Clouds themselves and allows for flexibility in the intrinsic volume density distribution of the MC satellites. As a result, we can accurately reproduce the DES satellites' observed positions and kinematics. Assuming that Milky Way (MW) dwarfs follow the distribution of subhaloes in ΛCDM, we further demonstrate that, of 14 observed satellites, the MW halo contributes fewer than 4(8) of these with 68(95)% confidence and that 7(12) DES dwarfs have probabilities greater than 0.7(0.5) of belonging to the LMC. Marginalising over the entire suite, we constrain the number of Magellanic satellites in the range -7 < MV < -1 which exceed the DES surface brightness threshold at ˜70, and the mass of the LMC around 1011M⊙. The data also strongly support a first-infall scenario for the LMC. Finally, we give predictions for the line-of-sight velocities and the proper motions of the satellites discovered in the vicinity of the LMC.

  10. Sonderverfahren des Spritzgießens

    NASA Astrophysics Data System (ADS)

    Michaeli, Walther; Lettowsky, Christoph

    Das Spritzgießen ist neben der Extrusion das wichtigste Verarbeitungsverfahren für Kunststoffe [1]. Das Verfahren hat sich seit seinen Ursprüngen Ende des 19. Jahrhunderts bis heute stetig weiterentwickelt [2]. In neuerer Zeit steigt die Anzahl komplexer Anwendungen, die die gezielte Kombination verschiedener Funktionalitäten in einem Formteil erfordern. Das Standard-Spritzgießen kann diese Anforderungen immer weniger befriedigen. Daher gewinnen die Sonderverfahren des Spritzgießens zunehmend an Bedeutung [3]. Ihre Anzahl beträgt inzwischen über 100. Die Aufgabe des Anwenders ist es, aus der Vielzahl der möglichen Verfahren, ein anforderungsgerechtes auszuwählen, das sowohl unter technischen wie wirtschaftlichen Gesichtspunkten die optimale Lösung darstellt. Dies setzt die ständige Auseinandersetzung mit Entwicklungstendenzen im Bereich der Spritzgießtechnologie voraus. Daher soll im folgenden Abschnitt ein Überblick über die wichtigsten Spritzgieß-Sonderverfahren gegeben werden.

  11. Profil anthropometrique des enfants scolarises tananariviens

    PubMed Central

    Razafimanantsoa, Fetralinjiva; Razafindramaro, Notahiana; Raherimandimby, Hasina; Robinson, Annick; RakotoAlson, Olivat; Rasamindrakotroka, Andry

    2013-01-01

    Les enfants tananariviens sont en état de malnutrition chronique. Notre objectif est d’évaluer l'indice de masse corporelle (IMC) pour estimer les enfants apparemment "sains". Une enquête et une mesure de la taille et du poids des enfants scolarisés tananariviens de 6 à 11 ans ont été réalisées. Après leur accord, la taille et l'indice de masse corporelle des 442 enfants tirés au hasard ont été ainsi obtenus. L'analyse de la moyenne de la taille a révélé une différence significative à 8 ans, une différence non évidente sur l'indice de masse corporelle. La comparaison avec les valeurs de référence (OMS 2006) a montré un retard statural de 34% avec une tendance globale à la hausse et un déficit pondéral égal à 5,5% selon le z score. Ainsi, au sein d'une population malnutrie, l'indice de masse corporelle pourrait être utilisé comme un des paramètres à considérer dans l’évaluation de l’état de santé pour classer ces enfants en bonne santé apparente. PMID:24711862

  12. Dermatomyosite et panniculite: place des immunoglobulines

    PubMed Central

    Abdelhafidh, Nadia Ben; Toujeni, Sana; Kefi, Asma; Bousetta, Najeh; Sayhi, Sameh; Gharsallah, Imen; Othmani, Salah

    2016-01-01

    La panniculite est une maladie inflammatoire du tissu adipeux sous-cutané rarement associée à la dermatomyosite. Elle peut survenir avant, après ou en même temps que l'atteinte musculaire. Dans la plupart des cas, l’évolution de la panniculite et des autres atteintes de la dermatomyosite est favorable sous traitement corticoïde et/ou immunosuppresseur. Nous rapportons le cas d'une patiente âgée de 48 ans ayant présenté des lésions de panniculite précédant de 2 mois les signes musculaires. L'atteinte cutanée était résistante au traitement corticoïde associés aux immunosuppresseurs ce qui a nécessité le recours au traitement par Immunoglobulines polyvalentes permettant ainsi une amélioration à la fois de l'atteinte cutanée et musculaire.

  13. Newtons Universum. Materialien zur Geschichte des Kraftbegriffes.

    NASA Astrophysics Data System (ADS)

    Mit einem Vorwort von E. Seibold und einer Einführung von W. Neuser. This book is a selection of 15 articles published in the journal "Spektrum der Wissenschaft". The original English versions of the papers were first published in "Scientific American". Contents: 1. Impetustheorie und Intuition in der Physik (M. McCloskey). 2. Mittelalterliche Ursprünge der industriellen Revolution (T. S. Reynolds). 3. Leonardo da Vincis Beiträge zur theoretischen Mechanik (V. Foley, W. Soedel). 4. Nikolaus Kopernikus und Tycho Brahe (O. Gingerich). 5. Keplers Entdeckung der ersten beiden Planetengesetze (C. Wilson). 6. Galileis Entdeckung des Fallgesetzes (S. Drake). 7. Galileis Beobachtung des Neptun (S. Drake, C. T. Kowal). 8. Galileo Galilei und der Schatten des Giordano Bruno (L. S. Lerner, E. A. Gosselin). 9. Der Fall Galilei (O. Gingerich). 10. Newtons Apfel und Galileis "Dialog" (S. Drake). 11. Newtons Gravitationsgesetz - aus Formeln wird eine Idee (I. B. Cohen). 12. Christopher Wren: Astronom und Architekt (H. Dorn, R. Mark). 13. Atomismus und Kräfte in der Geschichte (L. Holliday). 14. Ein Elitezirkel vor 200 Jahren: Die Lunar Society von Birmingham (L. Ritchie-Calder). 15. Sadi Carnot: Technik und Theorie der Dampfmaschine (S. S. Wilson).

  14. Sécurité au-delà des mythes et des croyances

    ScienceCinema

    None

    2011-10-06

    Présentation orale en français, support visuel en français et en anglais. La pire des failles de sécurité est l'impression de sécurité. Le décalage entre la compréhension que l?on a des technologies utilisées, et leurs potentiels réels, ainsi que l'impact potentiellement négatif qu'elles peuvent avoir sur nos vies, n'est pas toujours compris, ou pris en compte par la plupart d'entre-nous. On se contente de nos perceptions pour ne pas avoir à se confronter à la réalité... Alors qu'en est-il vraiment ? En matière de sécurité qui de l'humain ou des technologies a le contrôle ?

  15. Paternité des articles et intérêts concurrents : une analyse des recommandations aux auteurs des journaux traitant de pratique pharmaceutique

    PubMed Central

    Courbon, Ève; Tanguay, Cynthia; Lebel, Denis; Bussières, Jean-François

    2014-01-01

    RÉSUMÉ Contexte : La présence d’auteurs honorifiques et fantômes ainsi que les intérêts concurrents représentent des difficultés bien documentées, liées à la publication d’articles scientifiques. Il existe des lignes directrices encadrant la rédaction et la publication de manuscrits scientifiques, notamment celles de l’International Committee of Medical Journal Editors (ICMJE). Objectifs : L’objectif principal de cette étude descriptive et transversale visait à recenser les instructions portant sur la paternité des articles et les intérêts concurrents provenant des recommandations aux auteurs des journaux traitant de pratique pharmaceutique. L’objectif secondaire visait à déterminer des mesures correctrices pour une paternité des articles plus transparente. Méthode : La recherche a débuté par l’identification des journaux traitant de pratique pharmaceutique. La consultation des instructions aux auteurs des journaux a permis ensuite de recenser les recommandations destinées à éviter les problèmes de paternité des articles et d’intérêts concurrents. Finalement, les membres de l’équipe de recherche se sont consultés afin de définir des mesures correctrices possibles à l’intention des chercheurs. Résultats : Des 232 journaux traitant de pharmacie, 33 ont été définis comme traitant de pratique pharmaceutique. Un total de 24 (73 %) journaux mentionnaient suivre la politique de l’ICMJE, 14 (42 %) demandaient aux auteurs de remplir un formulaire de déclaration d’intérêts concurrents au moment de la soumission de l’article, 17 (52 %) présentaient une définition de la qualité d’auteur et 5 (15 %) demandaient de détailler les contributions de chaque auteur. Une grille de 40 critères a été élaborée pour définir l’attribution du statut d’auteur. Conclusion : Moins de la moitié des journaux demandait aux auteurs de transmettre un formulaire de déclaration des intérêts concurrents au moment de la

  16. Broadband network selection issues

    NASA Astrophysics Data System (ADS)

    Leimer, Michael E.

    1996-01-01

    Selecting the best network for a given cable or telephone company provider is not as obvious as it appears. The cost and performance trades between Hybrid Fiber Coax (HFC), Fiber to the Curb (FTTC) and Asymmetric Digital Subscriber Line networks lead to very different choices based on the existing plant and the expected interactive subscriber usage model. This paper presents some of the issues and trades that drive network selection. The majority of the Interactive Television trials currently underway or planned are based on HFC networks. As a throw away market trial or a short term strategic incursion into a cable market, HFC may make sense. In the long run, if interactive services see high demand, HFC costs per node and an ever shrinking neighborhood node size to service large numbers of subscribers make FTTC appear attractive. For example, thirty-three 64-QAM modulators are required to fill the 550 MHz to 750 MHz spectrum with compressed video streams in 6 MHz channels. This large amount of hardware at each node drives not only initial build-out costs, but operations and maintenance costs as well. FTTC, with its potential for digitally switching large amounts of bandwidth to an given home, offers the potential to grow with the interactive subscriber base with less downstream cost. Integrated telephony on these networks is an issue that appears to be an afterthought for most of the networks being selected at the present time. The major players seem to be videocentric and include telephony as a simple add-on later. This may be a reasonable view point for the telephone companies that plan to leave their existing phone networks untouched. However, a phone company planning a network upgrade or a cable company jumping into the telephony business needs to carefully weigh the cost and performance issues of the various network choices. Each network type provides varying capability in both upstream and downstream bandwidth for voice channels. The noise characteristics

  17. Modelisation numerique et algebrique des joints labyrinthe des turbines francis

    NASA Astrophysics Data System (ADS)

    Bouderlique, Remi

    There are various types of hydraulic turbines. Regarding the operating conditions, geometries and technologies differ. Hydraulic seals are only used in Francis turbines, which are widely used. The role of hydraulic seals is not to be waterproof. Their main aim is to prevent contact between the rotating and static parts of the turbine. Although necessary, hydraulic seals create energetic losses : some fluid does not flow through the runner (leakage loss) and exerts a torque on the rotor (friction loss). In a context of constant progression towards still more efficient turbines, the optimization of each part of the turbine is necessary. Our study is a part of this research seeking to decrease the losses in turbines as much as possible. In order to understand fully the problem, and to ensure an optimal seal exists, an analytical study has been lead in the first place. It establishes the analytical expressions of the speeds, pressure, losses and optimal seal length for laminar flows in straight seals. Various tests were then lead with the ANSYS CFX solver in order to highlight aspects which necessitate a particular attention. For example, the issues of boundary conditions and dimensionless simulations were adressed. A CFD model has then been validated. The results of the experiences lead in the sixties by Dominion Engineering Works, which later became Andritz Hydro Limited, were used in this process. Even if all the tests were not useable, some of them were reproduced numerically. The CFD model which was used features SST turbulence modeling, 2D axisymmetric geometries, parabolic mesh distributions, smooth walls, and a outlet headloss based on the normal speed. For the various tests which were considered, the average discrepancy between numerical and experimental results is 6.5%. More than 60% of the discrepancies of those simulations are below the empirical uncertainty. That is why this model can be used for numerical experiences : as long as these experiences are in

  18. Traitement des fractures des plateaux externes par vissage percutané assisté par arthroscopie

    PubMed Central

    Abouchane, Merouane; Belmoubarik, Amine; Benameur, Hamza; Haddoun, Ahmed Reda; Nechad, Mohammed

    2015-01-01

    Le but de notre étude est d'évaluer les résultats de fractures des plateaux tibiaux externes traitées par ostéosynthèse percutanée assistée par arthroscopie. Dix patients (8 hommes et 2 femmes) de 32 ans en moyenne ont subi cette intervention afin de réparer des fractures des plateaux tibiaux Schatzker I-III. Après avoir appliqué un garrot pneumatique, nous avons réduit et fixé la fracture au moyen de vis cannelées souschondrales. Lésions associées retrouvent deux lésions partielles du ménisque externe ont été retrouvé, traitées par résection partielle. Une orthèse de genou été de mise à but antalgique et protectrice pendant six semaines avec béquillage et interdiction de l'appui pour une durée de douze semaines avec reprise d'appui partiel au delà. La durée d'hospitalisation été d'une moyenne de cinq jours. La rééducation passive a été commence le lendemain de l'intervention et continuait dans chez un kinésithérapeute à la sortie du patient du service. Le suivi été à J7, J15, 1mois, 3mois, 6 mois puis tous les 6 mois. Neuf de nos patients ont été revu régulièrement sauf un perdu de vue. Le recul moyen de notre série été de 16 mois (10 et 24 mois). Le score de Lysholm a été utilisé pour évaluer les résultats cliniques chez nos neuf patients: excellent chez trois patients bons chez trois moyen chez un seul et mauvais chez deux patients. Tous nos neuf patients ont consolidé (figure 10 contrôle scopique d un article). Aucune gonarthrose n'a été note chez nos neuf patients due essentiellement au recul moyen faible de 16 mois. Le traitement des fractures des plateaux tibiaux externes assisté par arthroscopie produit des résultats satisfaisants et peut être accepté comme solution de rechange efficace au traitement des fractures des plateaux tibiaux causées par un choc de faible énergie. PMID:26587137

  19. Emotion, philosophical issues about.

    PubMed

    Deonna, Julien; Tappolet, Christine; Teroni, Fabrice

    2015-01-01

    We start this overview by discussing the place of emotions within the broader affective domain-how different are emotions from moods, sensations, and affective dispositions? Next, we examine the way emotions relate to their objects, emphasizing in the process their intimate relations to values. We move from this inquiry into the nature of emotion to an inquiry into their epistemology. Do they provide reasons for evaluative judgments and, more generally, do they contribute to our knowledge of values? We then address the question of the social dimension of emotions, explaining how the traditional nature versus nurture contrast applies to them. We finish by exploring the relations between emotions, motivation and action, concluding this overview with a more specific focus on how these relations bear on some central ethical issues. PMID:26263224

  20. Ethical issues and addiction.

    PubMed

    Lambert, Binta; Scheiner, Melissa; Campbell, Deborah

    2010-04-01

    The epidemic of substance abuse continues to pose a significant challenge to clinicians nationwide. Although there is a tendency to simply associate drug abuse with poverty, the problem affects every social stratum gender and race; and pregnant women are no exception. Caring for pregnant, substance-using women and their infants presents complex legal and ethical issues. Debate is ongoing about whether criminal penalties should be imposed on women based solely on their use of alcohol and other drugs during pregnancy. Furthermore, controversies persist about the rights and wishes of pregnant women versus the interests of their fetuses. For health professionals, conflict arises when the pregnant woman chooses behaviors that have the potential to harm the developing fetus. The ethical dilemma arises from competing autonomy-based and beneficence-based obligations to the maternal-fetal dyad. This chapter explores the ethics-based conflicts in the delivery of health care to drug abusing pregnant women. PMID:20407974

  1. Ethical issues in HIV.

    PubMed

    Dhai, Amaboo; Noble, Ray

    2005-04-01

    The number of people with HIV/AIDS continues to increase globally. Women, who represent the subgroup with the fastest rate of increase, are usually informed of their serostatus by the obstetrician/gynaecologist. As treatment of infected women raises a number of ethical issues, an understanding of the theoretical background for ethical decision making is requisite to ensure these problems are resolved within a morally appropriate framework. Vigorous debate has arisen from the tensions between the competing goals of HIV testing, third party disclosure, management of the critically ill HIV-infected woman, infertility management in the background of HIV/AIDS, and gender-based violence as cause or result of acquiring HIV infection. Women may be differently empowered economically, socially and culturally. What may be a satisfactory solution in the context of the USA and Europe may be far from ideal in that of the developing world. PMID:15778114

  2. Methylmercury risk assessment issues

    SciTech Connect

    Lipfert, F.W.; Saroff, L.

    1996-07-01

    This paper reviews the general background of health risks associated with mercury (Hg), primarily methylmercury (MeHg), with a view towards application to advanced technologies that could reduce any contributions from coal combustion. The need for accurate assessment of such risks is discussed, since Hg is now widely dispersed in the environment and cannot easily be eliminated. The primary pathway of MeHg intake is through eating contaminated fish. The issues of concern include identification of critical health outcomes (various neurological indices) and their confounding factors, accurate assessment of MeHg intake rates, and appropriate use of dose-response functions. Ultimately, such information will be used to evaluate alternative coal combustion systems.

  3. Migration issues important -- Mongolia.

    PubMed

    1999-01-01

    Migration and urbanization are issues that require increasing attention in Mongolia. Mr. Sodov Sonin, Minister of Health and Social Welfare, stated at the Forum that fertility has declined, but mortality, in particular the mortality of children and mothers, is still too high. In addition, there is a significant gap between the knowledge of and behaviors concerning reproductive health, which is one of the causes of the country's high abortion rates. However, on the positive side, literacy is high among women--70% of the students in Mongolia's higher educational institutions are female and the State recognizes equal rights for women. Moreover, programs that promote health and education, including the National Program on Reproductive Health, are being implemented; but despite all these, Mongolia still lacks the human and financial resources to implement the ICPD Program of Action satisfactorily. The country also needs dramatic changes in mind-set and in terms of capacity building, given its ongoing socioeconomic transition. PMID:12295512

  4. Feminist issues in development.

    PubMed

    Antrobus, P

    1987-01-01

    The United Nations Decade for the Advancement of Women, from 1975 to 1985, leaves a legacy of a deeper understanding of the issues, and the emergence of new networks with the experience and commitment to work for further changes. However, the role and status of women did not improve. There is a new commitment to struggle for the ending of all oppression, injustice and violence of all kinds at all levels. Feminism is a consciousness of all forms of women's oppression and a commitment to work against them. Feminist critiques illuminate the larger structures that oppress both women and men. New development theories embracing feminism are necessary to understand how patriarchy and economic systems propogate oppression. The production-oriented approach to rural development is flawed n failing to address women's lack of access to land, credit, training and new technologies. Overwhelming household tasks, cultural norms, and traditional attitudes limit women's involvement in training programs and other development activities. The basic needs approach to rural development provides access to vital services to meet a family's basic needs for nutrition, housing and clothing, and allows people's participation in decision making. However, women have little actual role in decision making so their needs, concerns and perspectives are not taken into account. Women are treated as instruments to achieve goals without appreciating their perspective. Project-based approached emphasize short term goals rather than laying the foundation for longterm changes. Few projects address structural issues or empower women. Projects must include education to increase personal growth and self reliance. Development planning can be enormously enhanced by taking gender differences into account and recognizing that people, specially poor women, can promote their own devleopment. Longterm strategies that challenge existing structures, address the existing economic order, and, most of all, recognize

  5. Issues in energy finance

    NASA Astrophysics Data System (ADS)

    Khokher, Zeigham Islam

    As opposed to the well developed and understood equity markets, the energy markets are still in their infancy. The explosion of contracts, of both the primary and derivative types, are testament both to the existing size and the untapped growth potential of this exciting industry. However, because of its relative youth many basic issues in the energy markets remain unresolved. This thesis introduces some interesting questions and provides insights into these issues. Thematically, the chapters of this thesis are linked by an emphasis on valuation and risk management decisions. A contribution of this thesis is to show that subtle differences between the endogenous price process in our general equilibrium setting and the exogenous processes considered in earlier papers can generate significant differences in both financial and real option values. In addition to these valuation concerns there has been much debate about the corporate risk management function. Finance theory suggests that a value maximizing corporation should either be indifferent to hedging or, in the presence of certain imperfections, it should completely hedge all exposures. Both these extremes contradict empirical evidence. We show that existing corporate hedging behaviour is best explained in light of both physical market imperfections and directional predictions on future prices. While these speculative motives may arise from corporate hubris or genuine informational advantages, we argue that it would be difficult to implement private information in the absence of noise traders. Related to the risk management decision is the existence of futures risk premia. These premia have been thought to be cause by covariance with priced factors or due to the hedging demands of consumers and producers. This thesis argues that inventories serve as a signal of available quantity, which coupled with consumers fears regarding stockouts can induce a positive relationship between premia and inventories. In

  6. Drug Abuse on College Campuses: Emerging Issues. Issues in Prevention

    ERIC Educational Resources Information Center

    Higher Education Center for Alcohol, Drug Abuse, and Violence Prevention, 2012

    2012-01-01

    This "Issues in Prevention" focuses on emerging issues concerning drug abuse on college campuses. This issue contains the following articles: (1) Drug Abuse Trends; (2) Q&A With Jim Lange; (3) Bath Salts; (4) Refuse to Abuse; (5) Related Federal Resource; and (6) Higher Education Center Resources.

  7. Etude des phenomenes dynamiques ultrarapides et des caracteristiques impulsionnelles d'emission terahertz du supraconducteur YBCO

    NASA Astrophysics Data System (ADS)

    Savard, Stephane

    Les premieres etudes d'antennes a base de supraconducteurs a haute temperature critique emettant une impulsion electromagnetique dont le contenu en frequence se situe dans le domaine terahertz remontent a 1996. Une antenne supraconductrice est formee d'un micro-pont d'une couche mince supraconductrice sur lequel un courant continu est applique. Un faisceau laser dans le visible est focalise sur le micro-pont et place le supraconducteur dans un etat hors-equilibre ou des paires sont brisees. Grace a la relaxation des quasiparticules en surplus et eventuellement de la reformation des paires supraconductrices, nous pouvons etudier la nature de la supraconductivite. L'analyse de la cinetique temporelle du champ electromagnetique emis par une telle antenne terahertz supraconductrice s'est averee utile pour decrire qualitativement les caracteristiques de celle-ci en fonction des parametres d'operation tels que le courant applique, la temperature et la puissance d'excitation. La comprehension de l'etat hors-equilibre est la cle pour comprendre le fonctionnement des antennes terahertz supraconductrices a haute temperature critique. Dans le but de comprendre ultimement cet etat hors-equilibre, nous avions besoin d'une methode et d'un modele pour extraire de facon plus systematique les proprietes intrinseques du materiau qui compose l'antenne terahertz a partir des caracteristiques d'emission de celle-ci. Nous avons developpe une procedure pour calibrer le spectrometre dans le domaine temporel en utilisant des antennes terahertz de GaAs bombarde aux protons H+ comme emetteur et detecteur. Une fois le montage calibre, nous y avons insere une antenne emettrice dipolaire de YBa 2Cu3O7-delta . Un modele avec des fonctions exponentielles de montee et de descente du signal est utilise pour lisser le spectre du champ electromagnetique de l'antenne de YBa 2Cu3O7-delta, ce qui nous permet d'extraire les proprietes intrinseques de ce dernier. Pour confirmer la validite du modele

  8. Stock Issues in Aristotle's Rhetoric

    ERIC Educational Resources Information Center

    Harpine, Bill

    1977-01-01

    Defines "stock issue" by the manner in which they function in Aristotle's theory, reviews examples of modern theories of stock issues, examines previous investigations of the "Rhetoric," and analyzes Aristotle's approach to this aspect of argumentation. (MH)

  9. ERCMExpress. Volume 3, Issue 1

    ERIC Educational Resources Information Center

    Kahn, Gina

    2007-01-01

    The Emergency Response and Crisis Management (ERCM) Technical Assistance Center's newsletter, "ERCMExpress," provides comprehensive information on key issues in school emergency management. This issue of "ERCMExpress" discusses "Tapping into Nontraditional Community Partners for Emergency Management." Collaboration by schools with community…

  10. Launch Services Program EMC Issues

    NASA Technical Reports Server (NTRS)

    trout, Dawn

    2004-01-01

    Presentation covers these issues: (1) Vehicles of the Launch Services Program, (2) RF Environment, (3) Common EMC Launch Vehicle Payload Integration Issues, (4) RF Sensitive Missions and (5) Lightning Monitoring,

  11. In This Issue

    NASA Astrophysics Data System (ADS)

    1996-07-01

    Composing the Curriculum For your summer reading pleasure this month's issue provides a wide range of subjects and activities. Our lead article is a tribute to a chemist-composer, Lejaren A. Hiller, Jr., as well as an examination of the interesting relationship between chemistry (and science) and music. Like Hiller, Wamser and Wamser (page 601) love both chemistry and music, and this comes through loud and clear in their historical perspective on Hiller's work. Much of the rest of the issue impinges on the chemistry curriculum in one form or another. Rettich, Bailey, Frank, and Frick (page 638) describe an integrated first- and second-year curriculum being developed at Illinois Wesleyan University that includes all subdisciplines of chemistry. They describe ways to teach topics such as acids and bases so that the perspectives of (for example) organic and inorganic chemistry are integrated and contemporaneous. Those contemplating a popular reform, group work or cooperative learning, will be interested in Birk and Kurtz's program (page 615) for training teaching assistants using cooperative learning. Surely TAs who have participated in cooperative groups to develop their own techniques for handling discussion and lab sessions will be able to use group learning to better advantage. Several years ago the ACS Division of Chemical Education set up a Task Force on the General Chemistry Curriculum. With support from the National Science Foundation and others, the task force has been quite active. In addition to the summative reports published here (pages 617-636) on four areas in which general chemistry teaching can be improved, they have contributed many Forum columns in earlier issues of the Journal and have published much of their work in New Directions for General Chemistry: A Resource for Curricular Change; Baird W. Lloyd, ed. Our current approach to teaching electron configurations of the atoms is largely based on quantum theory Because of the mathematics required

  12. Optimisation structurelle des systemes energetiques

    NASA Astrophysics Data System (ADS)

    Saloux, Etienne

    The development of renewable energies is growing over the last decade to face environmental issues due to the world fossil fuel consumption increase. These energies are highly involved in houses and commercial buildings and numerous systems have been proposed to meet their energy demand. Therefore, improving both efficiency and use of systems, i.e. improving energy management, appears essential to limit the ecological footprint of humanity on the planet. However, system integration yields a very complex problem to be solved due to the large number of units and theirs technology, size, working conditions and interconnections. This situation highlights the lack of systematic analysis for comparing integrated system performance and for correctly pointing out their potential. As a result, the objective of this thesis is to develop and to present such a method, in other words the structural optimization of energy systems. It will be helpful to choose the optimal equipment by identifying all the possibilities of system arrangements and for comparing their performance. Combinations have then been subjected to environmental (climate), structural (available area) and economical constrains while assessment criteria have considered both energy, economic and ecological aspects. For that reason, as well as energy and economic analyses, the exergy concept has also been applied to the equipment. Nevertheless, the high degree of complexity of integrated systems and the tedious numerical calculations make the resolution by using standard software very difficult. It is clear that the whole optimization project would be considerable and the aim is to develop models and optimization tools. First of all, an exhaustive review of energy equipment including photovoltaic panels, solar collectors, heat pumps and thermal energy storage systems, has been performed. Afterwards, energy and exergy models have been developed and tested for two specific energy scenarios: a) a solar assisted heat

  13. Children's Literature: An Issues Approach.

    ERIC Educational Resources Information Center

    Rudman, Masha Kabakow

    Meant as a reference and guide to critical evaluation of the way issues are treated in children's books, each of the nine chapters in this book can be used independently. Each chapter contains a discussion of an issue, a section that relates how particular books handle that issue, at least two suggestions for activities that teachers can use to…

  14. Hunger and Development [Issue Packet].

    ERIC Educational Resources Information Center

    American Freedom from Hunger Foundation, Washington, DC.

    A variety of informational materials is compiled in this issue packet concentrating on hunger and development. They have been assembled to understand the issues associated with the facts of world hunger and to try to invent new forms of action and thought necessary to find the possibilities hidden in the hunger issue. Items include: (1) a fact and…

  15. Critical Issues Facing School Principals

    ERIC Educational Resources Information Center

    Styron, Ronald A., Jr.; Styron, Jennifer L.

    2011-01-01

    The purpose of this study was to further extend research initially conducted in 2003 pertaining to the critical issues K-12 principals address on a daily basis. The study involved surveying school principals within the state of Mississippi to discover the critical issues they identified, the significance level of these issues, and the rationale…

  16. Population and Development [Issue Packet].

    ERIC Educational Resources Information Center

    American Freedom from Hunger Foundation, Washington, DC.

    A variety of informational materials is compiled in this issue packet concentrating on population and development. The materials have been assembled to understand the issues associated with the facts of the world's population and to try to invent new forms of action and thought necessary to find the possibilities hidden in the population issue.…

  17. Teaching Ethical Issues in Science.

    ERIC Educational Resources Information Center

    Levinson, Ralph

    This paper presents a study that investigates the teaching and learning aspects of controversial issues in science education. Teaching ethical issues is mandatory for science teachers in England; however, teachers may experience difficulties in exploring contemporary issues in science due to rapid and unpredictable changes. The study carries an…

  18. Six Crucial Issues in Education.

    ERIC Educational Resources Information Center

    Tronsgard, David T., Ed.

    This book contains six essays organized under (1) Three Issues of Governance and (2) Three Issues of Curricula. In the first section, Richard A. Rossmiller identifies some of the trends that have led to widespread interest in full State funding, indicates some of the associated problems and issues, describes some ways of achieving full State…

  19. Bilingual Education: Issues and Strategies.

    ERIC Educational Resources Information Center

    Padilla, Amado M., Ed.; And Others

    This collection of 16 studies examines the wide variety of issues surrounding bilingual education and reviews program design, evaluation, and classroom strategies. The following chapters review the 20-year history of bilingual education and concomitant political issues: (1) "Bilingual Education: Issues and Perspectives" (A. M. Padilla); and (2)…

  20. Innovations: Issue 3, Spring 2007

    ERIC Educational Resources Information Center

    Educational Testing Service, 2007

    2007-01-01

    Innovations, Educational Testing Service (ETS's) corporate magazine, provides information on educational assessment for educators, school leaders, researchers and policymakers around the world. Each issue focuses on a particular theme in assessment. This issue explores the question, "What makes a great teacher?" Articles in this issue include: (1)…

  1. Education Studies: Issues & Critical Perspectives

    ERIC Educational Resources Information Center

    Kassem, Derek; Mufti, Emmanuel; Robinson, John

    2006-01-01

    This major text for Education Studies students provides a critical account of key issues in education today. The text features: (1) A critical analysis of key issues in Education Studies to encourage students' thinking about education in the broadest terms; (2) Themed sections with introductions to link the issues discussed in each chapter; (3)…

  2. Nanofluids Research: Key Issues

    PubMed Central

    2010-01-01

    Nanofluids are a new class of fluids engineered by dispersing nanometer-size structures (particles, fibers, tubes, droplets) in base fluids. The very essence of nanofluids research and development is to enhance fluid macroscopic and megascale properties such as thermal conductivity through manipulating microscopic physics (structures, properties and activities). Therefore, the success of nanofluid technology depends very much on how well we can address issues like effective means of microscale manipulation, interplays among physics at different scales and optimization of microscale physics for the optimal megascale properties. In this work, we take heat-conduction nanofluids as examples to review methodologies available to effectively tackle these key but difficult problems and identify the future research needs as well. The reviewed techniques include nanofluids synthesis through liquid-phase chemical reactions in continuous-flow microfluidic microreactors, scaling-up by the volume averaging and constructal design with the constructal theory. The identified areas of future research contain microfluidic nanofluids, thermal waves and constructal nanofluids. PMID:20676214

  3. Laser Propulsion Standardization Issues

    SciTech Connect

    Scharring, Stefan; Eckel, Hans-Albert; Roeser, Hans-Peter; Sinko, John E.; Sasoh, Akihiro

    2010-10-08

    It is a relevant issue in the research on laser propulsion that experimental results are treated seriously and that meaningful scientific comparison is possible between groups using different equipment and measurement techniques. However, critical aspects of experimental measurements are sparsely addressed in the literature. In addition, few studies so far have the benefit of independent confirmation by other laser propulsion groups. In this paper, we recommend several approaches towards standardization of published laser propulsion experiments. Such standards are particularly important for the measurement of laser ablation pulse energy, laser spot area, imparted impulse or thrust, and mass removal during ablation. Related examples are presented from experiences of an actual scientific cooperation between NU and DLR. On the basis of a given standardization, researchers may better understand and contribute their findings more clearly in the future, and compare those findings confidently with those already published in the laser propulsion literature. Relevant ISO standards are analyzed, and revised formats are recommended for application to laser propulsion studies.

  4. Technical issues: logistics. AAMC.

    PubMed

    Stillman, P L

    1993-06-01

    The author states that she became interested in standardized patients (SPs) around 20 years ago as a means of developing a more uniform and effective way to provide instruction and evaluation of basic clinical skills. She reflects upon in detail: (1) the logistics of using SPs in teaching; (2) how SPs are used in assessment; (3) what aspects of performance SPs can be trained to record and evaluate; (4) issues concerning checklists; (5) evaluation of interviewing skills; (6) evaluation of written communication skills; (7) importance of defining what is being tested; (8) various kinds and uses of inter-station exercises and problems of scoring them; (9) case development and the various sources for case material; (10) ways to generate scores; (11) selecting and training SPs; (12) role of the faculty and primary importance of bedside training with real patients; and (13) pros and cons of national versus single-school efforts to use SPs. She concludes by cautioning that further research must be done before SPs can be used for high-stakes certifying and licensing examinations. PMID:8507311

  5. Reagan issues mineral policy

    NASA Astrophysics Data System (ADS)

    The National Materials and Minerals Program plan and report that President Reagan sent to Congress on April 5 aims to ‘decrease America's minerals vulnerability’ while reducing future dependence on potentially unstable foreign sources of minerals. These goals would be accomplished by taking inventory of federal lands to determine mineral potential; by meeting the stockpile goals set by the Strategic and Critical Material Stockpiling Act; and by establishing a business and political climate that would encourage private-sector research and development on minerals.Now that the Administration has issued its plan, the Subcommittee on Mines and Mining of the House Committee on Interior and Insular Affairs will consider the National Minerals Security Act (NMSA), which was introduced 1 year ago by subcommittee chairman Jim Santini (D-Nev.) [Eos, May 19, 1981, p. 497]. The bill calls for establishing a three-member White-House-level council to coordinate the development of a national minerals policy; amending tax laws to assist the mining industry to make capital investments to locate and produce strategic materials; and creating a revolving fund for the sale and purchase of strategic minerals. In addition, the NMSA bill would allow the secretary of the interior to make previously withdrawn public lands available for mineral development. The subcommittee will hold a hearing on the Administration's plan on May 11. Interior Secretary James Watt has been invited to testify.

  6. Maglev guideway design issues

    SciTech Connect

    Plotkin, D.; Kim, S.

    1997-05-01

    This paper reports results from guideway analyses conducted as part of the National Maglev Initiative (NMI), a government-industry effort from 1989 to 1994, formed to encourage the development of US maglev technology and to assess its potential application within the US transportation system. Covered here are some key guideway design issues that were common to the designs assessed for the NMI, and to maglev guideways in general. They represent aspects that will need additional attention in future efforts to produce structurally sound and economical maglev guideways. These recommendations come from the analyses conducted by a team from the US Army Construction Engineering Research Laboratories, the Civil Engineering Department of the University of Illinois, and Alfred Benesch and Company. The recommendations focus on design philosophy and the development of general design criteria, guideway maintenance and the provision for future alignment adjustment in both the guideway and the magnets, foundation design, and the long-term performance of guideway materials and reinforcement. Generally, one of the main challenges to guideway designers is to produce a structure that will be easily maintainable to the narrow tolerances and precise alignment required for practical high-speed maglev operation.

  7. Psychological issues in IVF.

    PubMed

    Dennerstein, L; Morse, C

    1985-12-01

    The role of psychological factors in IVF is complex. Psychological issues intertwine with physical ones, often with additive effects. The very diagnosis of infertility is likely to cause stress. In addition, the many investigations and procedures may have compounded distress. There are probably a small number of patients in whom psychological factors may induce infertility. But in the majority, psychological factors may exacerbate infertility and influence the patient's and partner's responses. Mental, sexual, marital and social adjustment may all be affected. The procedure of IVF is likely to have a further impact. A pilot study of couples entering an IVF programme revealed the women to be highly anxious and to conform strongly to feminine stereotypes. Many had received psychiatric help in the past. The idiopathic group appeared to cope less well with stress and had higher anxiety and neuroticism scores. Follow-up revealed that IVF had a profound impact on many of the women. Most had received no counselling in the interim. In those who completed questionnaires at follow-up, a differential effect was observed between the organic and idiopathic groups. State anxiety fell in the idiopathic group but so did marital adjustment. The clinician is advised to incorporate consideration of the psychological aspects of IVF into every aspect of the programme. The addition of a psycho-social team may assist the gynaecologist in this and help the couple to make an optimal adjustment. PMID:3833441

  8. Solid propellant environmental issues

    SciTech Connect

    Le, M.D.

    1998-07-01

    The objective of the Solid Propellant Environmental Issues (SPEI) project is to demonstrate environmentally acceptable technologies that will enhance the continued production of solid rocket motors (SRMs) by complying with current and anticipated environmental regulations. Phase 1 of the project identifies current and anticipated environmental regulations that may affect SRMs manufacturing in the future and identify emerging process technologies which comply with these regulations. Phase 2 of the project established a baseline database by fabricating a 363 kg motor using the current manufacturing process. In Phase 3, environmentally acceptable process technologies were evaluated, ranked, and selected for demonstration using criteria developed by the team. The results for Phase 1--3 have previously been presented. This paper will present data obtained to date on Phase 4. In Phase 4, the alternate process technologies were evaluated for compatibility, cleaning effectiveness, and waste minimization/pollution prevention. The best performing candidate for each application area was selected for demonstration. The selected process technologies will be inserted into the baseline manufacturing process from Phase 2. The new manufacturing process will be demonstrated and evaluated through the scale-up and fabrication of two 363 kg solid rocket motors.

  9. Les neuropeptides gastro-intestinaux cibles des effets des rayonnements ionisants : altérations fonctionnelles

    NASA Astrophysics Data System (ADS)

    Linard, C.; Esposito, V.; Wysocki, J.; Griffiths, N. M.

    1998-04-01

    The symptoms associated with exposure to ionizing radiation are nausea, vomiting, diarrhoea. The response of the gut is complex involving modifications of motility and fluid and electrolyte transport. Gastrointestinal regulatory peptides have an important role in these functions. This study showed that radiation-induced tissue variations of neuropeptides have some repercussions on intestinal biological activity of these peptides soon after irradiation. In addition such modifications are also seen a few years after irradiation. Les symptômes associés à l'exposition aux rayonnements ionisants sont des nausées, vomissements et diarrhées. La réponse du système digestif est complexe, impliquant des modifications de la motilité et du transport d'eau et d'électrolytes. les neuropeptides gastro-intestinaux ont un rôle important dans ces fonctions. Cette étude montre que les variations tissulaires de ces neuropeptides induites par l'irradiation ont des répercussions sur l'activité biologique intestinale pour des temps précoces mais que ces perturbations sont encore visibles quelques années après l'irradiation.

  10. Vers des boites quantiques a base de graphene

    NASA Astrophysics Data System (ADS)

    Branchaud, Simon

    Le graphene est un materiau a base de carbone qui est etudie largement depuis 2004. De tres nombreux articles ont ete publies tant sur les proprietes electroniques, qu'optiques ou mecaniques de ce materiel. Cet ouvrage porte sur l'etude des fluctuations de conductance dans le graphene, et sur la fabrication et la caracterisation de nanostructures gravees dans des feuilles de ce cristal 2D. Des mesures de magnetoresistance a basse temperature ont ete faites pres du point de neutralite de charge (PNC) ainsi qu'a haute densite electronique. On trouve deux origines aux fluctuations de conductance pres du PNC, soit des oscillations mesoscopiques provenant de l'interference quantique, et des fluctuations dites Hall quantique apparaissant a plus haut champ (>0.5T), semblant suivre les facteurs de remplissage associes aux monocouches de graphene. Ces dernieres fluctuations sont attribuees a la charge d'etats localises, et revelent un precurseur a l'effet Hall quantique, qui lui, ne se manifeste pas avant 2T. On arrive a extraire les parametres caracterisant l'echantillon a partir de ces donnees. A la fin de cet ouvrage, on effectue des mesures de transport dans des constrictions et ilots de graphene, ou des boites quantiques sont formees. A partir de ces mesures, on extrait les parametres importants de ces boites quantiques, comme leur taille et leur energie de charge.

  11. Peste des Petits Ruminants Virus in Heilongjiang Province, China, 2014

    PubMed Central

    Wang, Miao; Wang, Shida; Liu, Zaisi; Shen, Nan; Si, Wei; Sun, Gang; Drewe, Julian A.; Cai, Xuehui

    2015-01-01

    During March 25–May 5, 2014, we investigated 11 outbreaks of peste des petits ruminants in Heilongjiang Province, China. We found that the most likely source of the outbreaks was animals from livestock markets in Shandong. Peste des petits ruminants viruses belonging to lineages II and IV were detected in sick animals. PMID:25811935

  12. Altération des sulfures des granulats dans les chaussées

    NASA Astrophysics Data System (ADS)

    Jigorel, A.; Jauberthie, R.

    2002-07-01

    Sulfides present in hornsfeld aggregates, used in light pavanent construction in contact with humid air alter rapidly. Crystallisation of sulfates at the interface of bitumastic material and sub-base creates serious problems (intumescence and crazing) that can lead to a total reconstruction of the project (roads, sidewalks, sports areas, etc). The sulfides in the aggregates and the sulfates produced due to alteration are studied by SEM and XRD. The results show that the intensity of this phenomenon is linked to the nature and the crystallinity of the sulfides. The evolution of the sulfates formed during this alteration process is slow and complex. In new pavements (3 years) the sulfates have a pulverised appearance and consist mostly of epsomite, associated with pickeringite and halotrichite. In older pavements (20 years) the sulfates form a fibrous concretion consisting of pickeringite and small quantities of halotrichite. Les sulfures présents dans les granulats élaborés à partir de cornéen nes s'altèrent rapidement dans les chaussées légères en présence d'air humide. La cristallisation des sulfates à l'interface enrobé-couche de fondation crée des désordres si importants (intumescences, faiençage) qu'il est bien souvent nécessaire d'assurer la réfection totale des ouvrages (routes, trottoirs, plateaux sportifs...). Les sulfures des granulats et les sulfates issus du processus d'altération ont été étudiés par diffractométrie X et examen su Microscope Electronique à Balayage équipé de microanalyse X. Les résultats montrent que !intensité des désordres est liée à la nature et à la cristallinité des sulfures. Les sulfates formés évoluent su cours du processus d'altération qui est long et complexe. Dans les chaussées récentes (3 ans) ils ont un aspect pulvérulent et sont constitués d'epsomite dominante associée à de la pickeringite et à de l'halotrichite. Dans les chaussées plus anciennes (20 ans) ils forment des concr

  13. Fissuration en relaxation des aciers inoxydables austénitiques au voisinage des soudures

    NASA Astrophysics Data System (ADS)

    Auzoux, Q.; Allais, L.; Gourgues, A. F.; Pineau, A.

    2003-03-01

    Des fissures intergranulaires peuvent se développer au voisinage des soudures des aciers inoxydables austénitiques lorsqu'ils sont réchauffés dans le domaine de température compris entre 500^{circ}C et 700^{circ}C. A ces températures, les contraintes résiduelles post-soudage se relaxent par déformation viscoplastique. Il peut arriver que ces zones proches de la soudure soient tellement fragiles, qu'elles ne puissent accommoder cette faible déformation. Afin de préciser quelles peuvent être les modifications microstructurales qui conduisent à une telle fragilisation, on a examiné les microstructures de ces zones et révélé ainsi un écrouissage résiduel, responsable d'une forte élévation de la dureté. On a pu reproduire par hypertrempe puis laminage entre 400^{circ}C et 600^{circ}C une microstructure similaire. Des essais mécaniques (traction, fluage, relaxation, sur éprouvettes lisses et pré-fissurées) ont été réalisés à 550^{circ}C et à 600^{circ}C sur ces zones affectées simulées et sur un état de référence hypertrempé. Ils ont montré que l'écrouissage diminuait la ductilité dans le domaine de rupture intergranulaire, sans modifier qualitativement le mécanisme d'endommagement. Pendant la pré-déformation les incompatibilités de déformation entre grains conduiraient à l'existence de contraintes locales élevées qui favoriseraient la germination des cavités intergranulaires.

  14. In This Issue

    NASA Astrophysics Data System (ADS)

    1996-06-01

    Organic Chemistry--New Challenges Perhaps more than any other of the chemical subdisciplines, the scope and focus of organic chemistry has been changed by modern technology and theoretical advances, and these changes have had an equally striking effect on the undergraduate curriculum. The main challenge in organic chemistry classes has shifted, in less than a generation, from memorizing all the groups, naming conventions, and classes of reactions to understanding complex interactions at the structural and electronic orbital level. As biochemistry and polymer chemistry have grown from being the purview of a few specialists to full-blown disciplines of their own, they have also migrated from interesting, but optional, chapters at the back of the book to separate courses in the curriculum. The availability of inexpensive instrumentation means undergraduates routinely use NMR and mass spec instead of melting points to identify their products. And the changes are continuing: segments of biochemistry are metamorphizing into molecular biology and polymer chemistry is finding interconnections with materials science. In fact, as our understanding of chemical reactions at molecular and electronic levels expands, it becomes more and more difficult to decide on demarcations between the subdisciplines. Organic chemistry is an organizational construct that once was useful for segregating certain topics into a coherent two-semester introductory course. Today, it covers so much territory that no one who is an "organic chemist" can know even a small fraction of the territory and faces unique challenges when designing and teaching undergraduate courses. In a wide spectrum of articles in this issue that fall under the "organic" umbrella--from environmental chemistry to new polymer products--teachers share their specific experiences and creative solutions to these challenges, providing their colleagues with new ideas, processes, and pedagogic approaches. To start off, we can examine

  15. Mars Surface Environmental Issues

    NASA Technical Reports Server (NTRS)

    Charles, John

    2002-01-01

    Planetary exploration by astronauts will require extended periods of habitation on a planet's surface, under the influence of environmental factors that are different from those of Earth and the spacecraft that delivered the crew to the planet. Human exploration of Mars, a possible near-term planetary objective, can be considered a challenging scenario. Mission scenarios currently under consideration call for surface habitation periods of from 1 to 18 months on even the earliest expeditions. Methods: Environmental issues associated with Mars exploration have been investigated by NASA and the National Space Biomedical Research Institute (NSBRI) as part of the Bioastronautics Critical Path Roadmap Project (see http ://criticalpath.jsc.nasa.gov). Results: Arrival on Mars will immediately expose the crew to gravity only 38% of that at Earth's surface in possibly the first prolonged exposure to gravity other than the 1G of Earth's surface and the zero G of weightless space flight, with yet unknown effects on crew physiology. The radiation at Mars' surface is not well documented, although the planet's bulk and even its thin atmosphere may moderate the influx of galactic cosmic radiation and energetic protons from solar flares. Secondary radiation from activated components of the soil must also be considered. Ultrafine and larger respirable and nonrespirable particles in Martian dust introduced into the habitat after surface excursions may induce pulmonary inflammation exacerbated by the additive reactive and oxidizing nature of the dust. Stringent decontamination cannot eliminate mechanical and corrosive effects of the dust on pressure suits and exposed machinery. The biohazard potential of putative indigenous Martian microorganisms may be assessed by comparison with analog environments on Earth. Even in their absence, human microorganisms, if not properly controlled, can be a threat to the crew's health. Conclusions: Mars' surface offers a substantial challenge to the

  16. Geo Issue Tracking System

    NASA Astrophysics Data System (ADS)

    Khakpour, Mohammad; Paulik, Christoph; Hahn, Sebastian

    2016-04-01

    Communication about remote sensing data quality between data providers and users as well as between the users is often difficult. The users have a hard time figuring out if a product has known problems over their region of interest and data providers have to spend a lot of effort to make this information available, if it exists. Scientific publications are one tool for communicating with the users base but they are static and mostly one way. As a data provider it is also often difficult to make feedback, received from users, available to the complete user base. The Geo Issue Tracking System (GeoITS) is an Open Source Web Application which has been developed to mitigate these problems. GeoITS combines a mapping interface (Google Maps) with a simple wiki platform. It allows users to give region specific feedback on a remote sensing product by drawing a polygon on the map and describing the problems they had using the remote sensing product in this area. These geolocated wiki entries are then viewable by other users as well as the data providers which can modify and extend the entries. In this way the conversations between the users and the data provider are no longer hidden in e.g. emails but open for all users of the dataset. This new kind of communication platform can enable better cooperation between users and data providers. It will also provide data providers with the ability to track problems their dataset might have in certain areas and resolve them with new product releases. The source code is available via http://github.com/TUW-GEO/geoits_dev A running instance can be tried at https://geoits.herokuapp.com/

  17. Issues in focus.

    PubMed

    1994-08-01

    The issues worldwide that deserve attention pertain to international migration, the education of women, family planning, missing female children, and prevention and control of AIDS cases. Migration outside country borders has been increasing due to economic and social disparities, and uncounted and unrecognized refugees are fleeing environmental disasters. The educational status of women has increased over the past 30 years. For example, female illiteracy has declined among women aged 20-24 years from 19% to 8% in Latin America, from 38% to 12% in eastern and western Asia, and from 80% to 49% in Africa. These improvements are significant, but the problem remains, where, for instance in Africa, there is still extensive illiteracy (75% of females aged under 25 years). A 1993 Population Action International Report states that low female educational levels and weak family planning and health programs are related to large family size and high child death rates. During the 1980s family planning was linked with ecological concerns. Progress has been made in the increase in contraceptive users in developing countries from 14% to 53% during 1965-70. Fertility has declined from 6.1 children per woman in the 1950s to 3.7. Kenya is a good example of a country with high fertility that reduced fertility through its emphasis on family planning. Obstacles to increased prevalence of contraception still remain. In Mexico more than 50% of public birth control services are provided to women in secret due to fear of their husband's abuse. Population pressure can result in the loss of girl children through higher mortality, better nutrition, neglect, or gender preference in the early fetal stages. The challenge of AIDS will be in caring for the sick and adjusting to social changes due to the expected increases in orphaned children. PMID:12318864

  18. In This Issue

    NASA Astrophysics Data System (ADS)

    1996-04-01

    Advanced Instrumentation in the Educational Laboratory The instruments that chemists use in their research have changed dramatically in the past decades. The explosion in new techniques and their instrumental counterparts has been made possible by two significant advances. The rapid propagation of computer chips and circuitry provides opportunities to collect more specialized and refined data than ever before. Computer-controlled instruments can detect events that a human researcher would never perceive and can record hundreds of data points in the time that a person could only observe one or two. Coupled with these advances in technology are advances in theory that allow more sophisticated interpretation of data. A hundred years ago a sophisticated instrument was a balance that could weigh minute quantities. Today a sophisticated instrument is one that can identify the composition of that minute sample, determine its molecular weight, or reveal a great deal about its energy states and bonding. This bonanza of new instruments is wonderful for the research chemist but a curricular headache for the chemistry teacher. It takes more time to learn how to run an NMR than to use a balance, and more sophistication on the part of the student is needed to interpret the data. And yet many courses that only a generation ago sported an expensive analytical balance as its prize instrument now require students to understand and operate a whole panoply of complex tools. Teachers faced with accommodating these curricular changes will find several articles in this issue helpful--either providing information on new techniques or descriptions of how to incorporate them into the classroom. Electrospray ionization mass spectrometry is one of the newest tools that has been added to the analytical arsenal. It is an extension of mass spectrometry that overcomes the old barrier that allowed only analysis of low molecular weight, volatile compounds. It is now possible to use MS for

  19. Hans Bethe : Des etoiles a la bombe

    NASA Astrophysics Data System (ADS)

    Bonnet-Bidaud, J. M.

    1996-06-01

    Il comprit le premier comment brillent les etoiles. Il fut aussi de cette poignee de scientifiques qui, dans le secret de Los Alamos, mirent au point la tristement celebre bombe atomique. Hans Bethe est l'un des derniers geants qui auront marque la physique de ce siecle d'une empreinte indelebile. C'est dans le bureau 01 du prestigieux laboratoire Kellog de l'institut Caltech qu'il a bien voulu retracer pour nous son impressionnante carriere, et revenir sur les motivations qui ont guide ses pas.

  20. Le traitement familial des enfants et des adolescents anorexiques : Des lignes directrices pour le médecin communautaire

    PubMed Central

    Findlay, S; Pinzon, J; Taddeo, D; Katzman, DK

    2010-01-01

    L’anorexie mentale (AM) est une maladie grave qui met la vie en danger et qui fait généralement son apparition pendant l’adolescence. Les données probantes au sujet du traitement optimal de l’AM chez les enfants et les adolescents sont en croissance, mais il reste beaucoup à apprendre. Même si les démarches thérapeutiques actuelles varient au Canada et ailleurs, les données jusqu’à présent indiquent que le traitement familial (TF) est le plus efficace pour les enfants et les adolescents anorexiques. Un élément essentiel du modèle de TF, c’est que les parents sont investis de la responsabilité de rétablir la santé physique de leur enfant et de s’assurer de la reprise complète de son poids. Le médecin qui comprend les principes fondamentaux et la philosophie du TF peut mettre en place les éléments de cette intervention fondée sur des faits probants auprès des jeunes patients anorexiques et de leur famille.

  1. The hydrogen issue.

    PubMed

    Armaroli, Nicola; Balzani, Vincenzo

    2011-01-17

    Hydrogen is often proposed as the fuel of the future, but the transformation from the present fossil fuel economy to a hydrogen economy will need the solution of numerous complex scientific and technological issues, which will require several decades to be accomplished. Hydrogen is not an alternative fuel, but an energy carrier that has to be produced by using energy, starting from hydrogen-rich compounds. Production from gasoline or natural gas does not offer any advantage over the direct use of such fuels. Production from coal by gasification techniques with capture and sequestration of CO₂ could be an interim solution. Water splitting by artificial photosynthesis, photobiological methods based on algae, and high temperatures obtained by nuclear or concentrated solar power plants are promising approaches, but still far from practical applications. In the next decades, the development of the hydrogen economy will most likely rely on water electrolysis by using enormous amounts of electric power, which in its turn has to be generated. Producing electricity by burning fossil fuels, of course, cannot be a rational solution. Hydroelectric power can give but a very modest contribution. Therefore, it will be necessary to generate large amounts of electric power by nuclear energy of by renewable energies. A hydrogen economy based on nuclear electricity would imply the construction of thousands of fission reactors, thereby magnifying all the problems related to the use of nuclear energy (e.g., safe disposal of radioactive waste, nuclear proliferation, plant decommissioning, uranium shortage). In principle, wind, photovoltaic, and concentrated solar power have the potential to produce enormous amounts of electric power, but, except for wind, such technologies are too underdeveloped and expensive to tackle such a big task in a short period of time. A full development of a hydrogen economy needs also improvement in hydrogen storage, transportation and distribution

  2. Ethical issues in neuroprosthetics

    NASA Astrophysics Data System (ADS)

    Glannon, Walter

    2016-04-01

    Objective. Neuroprosthetics are artificial devices or systems designed to generate, restore or modulate a range of neurally mediated functions. These include sensorimotor, visual, auditory, cognitive affective and volitional functions that have been impaired or lost from congenital anomalies, traumatic brain injury, infection, amputation or neurodevelopmental and neurodegenerative disorders. Cochlear implants, visual prosthetics, deep brain stimulation, brain-computer interfaces, brain-to-brain interfaces and hippocampal prosthetics can bypass, replace or compensate for dysfunctional neural circuits, brain injury and limb loss. They can enable people with these conditions to gain or regain varying degrees of control of thought and behavior. These direct and indirect interventions in the brain raise general ethical questions about weighing the potential benefit of altering neural circuits against the potential harm from neurophysiological and psychological sequelae. Other ethical questions are more specific to the therapeutic goals of particular neuroprosthetics and the conditions for which they are indicated. These include informed consent, agency, autonomy (free will) and identity. Approach. This review is an analysis and discussion of these questions. It also includes consideration of social justice issues such as how to establish and implement fair selection criteria in providing access to neuroprosthetic research and balancing technological innovation with patients’ best interests. Main results. Neuroprosthetics can restore or improve motor and mental functions in bypassing areas of injury or modulating dysregulation in neural circuits. As enabling devices that integrate with these circuits, neuroprosthetics can restore varying degrees of autonomous agency for people affected by neurological and psychiatric disorders. They can also re-establish the connectedness and continuity of the psychological properties they had before injury or disease onset and thereby

  3. Employee Assistance Program Issues

    NASA Technical Reports Server (NTRS)

    Gettleman, Alan G.; McGuire, William

    1999-01-01

    Employee Assistance Program (EAP) officers, as well as personnel in other disciplines from eight NASA Centers, attended this breakout session. Ms. Brenda Blair, MA, CEAP, a guest speaker at the conference, also attended as a consultant. Representatives from the NASA Centers introduced themselves and spoke briefly about their programs. In a discussion related to the conference theme on benchmarking, quality control issues within the EAP community and adequate documentation of cases were addressed. Disposition and provision for quality assurance checks for EAP providers in single person offices were also discussed. Ms. Blair presented methods for consulting with other NASA personnel in single person EAP offices as a quality control measure. EAP intervention in critical incidents was discussed. The question of whether EAP assistance is an asset or a potential liability in those situations was addressed. Suggestions were made of topics for future EAP video-teleconference topics. A program on EAP ethics was planned for a September video teleconference. Each person was asked to provide intake forms they use to Mr. Gettleman or Ms. Blair. Ms. Blair said she would review the forms to ensure that adequate notification is provided to the client for confidentiality. She would also review them to ensure they have adequate limits of confidentiality--a topic for future video teleconferencing. Mr. Gettleman described the NASA initiative to reduce stresses in the workplace, and the activities of an ad-hoc EAP group that will make recommendations to NASA senior management. Alternative training methods were discussed for reaching target audiences such as employees at risk, supervisors, and others. Pfc. David A. Pendleton, Victim Assistance Coordinator, U.S. Capitol Police. U.S. House of Representatives made a special presentation. Pfc. Pendleton was on duty during the tragic shooting of two Federal guards at the U.S. Capitol. He related the events immediately after the incident. He

  4. Children with health issues.

    PubMed

    Schuster, Mark A; Chung, Paul J; Vestal, Katherine D

    2011-01-01

    All children, even the healthiest, have preventive and acute health care needs. Moreover, a growing number of children are chronically ill, with preventive, acute, and ongoing care needs that may be much more demanding than those for healthy children. Because children are unable to care for themselves, their parents are expected to provide a range of health care services without which the current health care system for children would not function. Under this "shadow health care system," parents or parent surrogates often need to be with the child, a requirement that can create difficulties for working parents, particularly for those whose children are chronically ill. How federal, state, and employer policies and practices mesh with the child health care needs of families is therefore a central issue in any discussion about work and family balance. In this article Mark Schuster, Paul Chung, and Katherine Vestal describe the health care needs of children; the essential health care responsibilities of parents; the perspective of employers; and the existing network of federal, state, and local family leave benefits that employed parents can access. They also identify current gaps in policies that leave unmet the needs of both parents and their employers. The authors suggest the outlines of a national family leave policy that would protect the interests of parents and employers. In essence, such a policy would build on the federal Family and Medical Leave Act, which gives some workers time off with no advance notice required and no loss of job or health insurance. But it would also include elements of California's Paid Family Leave Insurance, which expands coverage to more workers and provides partial pay during leave. Employers could be given some financial protections as well as protections against employee fraud and abuse. Such a policy, the authors conclude, would help to provide security to parents, minimize effects on employers, raise societal expectations for

  5. Mega-constellations Issues

    NASA Astrophysics Data System (ADS)

    Bastida Virgili, Benjamin; Krag, Holger

    2016-07-01

    increase drastically. In this study, we report the detected issues of such a mega-constellation traffic, and we analyse the response of the space object population to the introduction of a large constellation conforming to the post-mission disposal guideline with differing levels of success and with different disposal orbit options.

  6. In This Issue

    NASA Astrophysics Data System (ADS)

    1996-06-01

    Organic Chemistry--New Challenges Perhaps more than any other of the chemical subdisciplines, the scope and focus of organic chemistry has been changed by modern technology and theoretical advances, and these changes have had an equally striking effect on the undergraduate curriculum. The main challenge in organic chemistry classes has shifted, in less than a generation, from memorizing all the groups, naming conventions, and classes of reactions to understanding complex interactions at the structural and electronic orbital level. As biochemistry and polymer chemistry have grown from being the purview of a few specialists to full-blown disciplines of their own, they have also migrated from interesting, but optional, chapters at the back of the book to separate courses in the curriculum. The availability of inexpensive instrumentation means undergraduates routinely use NMR and mass spec instead of melting points to identify their products. And the changes are continuing: segments of biochemistry are metamorphizing into molecular biology and polymer chemistry is finding interconnections with materials science. In fact, as our understanding of chemical reactions at molecular and electronic levels expands, it becomes more and more difficult to decide on demarcations between the subdisciplines. Organic chemistry is an organizational construct that once was useful for segregating certain topics into a coherent two-semester introductory course. Today, it covers so much territory that no one who is an "organic chemist" can know even a small fraction of the territory and faces unique challenges when designing and teaching undergraduate courses. In a wide spectrum of articles in this issue that fall under the "organic" umbrella--from environmental chemistry to new polymer products--teachers share their specific experiences and creative solutions to these challenges, providing their colleagues with new ideas, processes, and pedagogic approaches. To start off, we can examine

  7. Economic perspectives on key issues

    SciTech Connect

    Johnson, P.; Thomas, B.

    1985-01-01

    This book is about the contribution that economics can make to the understanding of some of today's key issues. The twelve topics discussed are representative of a very wide range of concerns. The first three chapters (on nuclear deterrence, the Palestinian problem, and sanctions against South Africa) are all issues associated with international relations. Later chapters consider the environment, poverty, technology, and the role of government. Family, crime, comprehensive education and youth unemployment issues are also addressed. All of the topics included illustrate issues which are of concern to many different societies. However, it is important to examine these issues in specific contexts rather than to rely on a purely general treatment using stylised facts. In a number of chapters the issues are therefore presented in the context of the UK and sometimes particular case studies are discussed.

  8. In This Issue

    NASA Astrophysics Data System (ADS)

    1996-02-01

    Computational Chemistry for the Masses Not long ago, chemical computation was considered a specialty area requiring extensive computer knowledge, power, and time. Over the past decade, however, it has changed from the arcane pursuit of a few advanced university researchers in the area of physical chemistry to a familiar tool used by a wide range of chemists. Nevertheless, it has required its practitioners to have extensive knowledge of computer programming and a thorough understanding of theoretical chemical concepts and as a result usually was reserved for the graduate curriculum. Now a further metamorphosis is in progress, as computational chemistry moves into the undergraduate curriculum, often using off-the-shelf software--commercial packages or adaptations of them that are readily shared by their creators. As we put this issue together, we realized that many of the articles involved sophisticated computations that would not have been possible a few years ago in the courses described. Further, the hard and software used was widely available at a reasonable cost. Some of the articles focus on the teaching of computational methods and others simply incorporate it as a facet in their overall strategy; however, taken together, they reflect a strong trend to utilize a diverse set of readily available methods and products in the undergraduate curriculum. The most familiar recent use of computational chemistry is the computer design of molecules in organic, medicinal, and biochemistry. However, computational chemistry is useful for inorganic chemists as well and is now migrating to undergraduate courses. Lipkowitz, Pearl, Robertson, and Schultz (page 105) make a strong case for its inclusion and present a two-week component they have developed for their senior-level laboratory course. Comba and Zimmer (page 108) offer a review of inorganic molecular mechanics calculations, which is designed for the novice and includes the basic equations, their application to

  9. Men's health issues in Asia.

    PubMed

    Ho, Christopher C K; Tan, Hui Meng

    2013-09-01

    Men's health has gained prominence over the past few years but it is still not on par with the attention or funding that women and child health is getting. In Asia, this issue is even more conspicuous. With westernization of lifestyle, Asian men's problems emulate their Western counterparts but there are certain issues unique to Asian men due to cultural differences. This review will discuss the health issues affecting Asian men and suggest measures that can be taken to overcome them. PMID:23822757

  10. Current issues with research support

    SciTech Connect

    Russell, W.T.

    1996-03-01

    It would be difficult to condense current issues in nuclear reactor regulation to just a few minutes. So, let me start off by saying that I have not tried to give a comprehensive listing of issues that are currently facing the reactor program, but rather to select those that I thought were relevant as they relate to research activities. Use of probabilistic risk assessment in regulatory decisions; materials aging issues concerning steam generators and reactor vessels; high burnup fuels; accident management; and digital instrumentation and control, are just a sampling of the important issues that I want to talk about.

  11. Breast cancer. Selected legal issues.

    PubMed

    Wynstra, N A

    1994-07-01

    Several legal and ethical issues may arise during the course of screening for and diagnosis and treatment of breast cancer. Among the most active legal areas are reimbursement for therapies deemed experimental by certain insurance companies, such as high dose chemotherapy/autologous bone marrow transplantation (HDCT/ABMT) and off-label drug use; these reimbursement issues are discussed. Legal issues in mammography screening and insurance coverage and legal issues relative to informed consent in breast cancer treatment also are discussed. PMID:8004625

  12. Étude des perturbations conduites et rayonnées dans une cellule de commutation

    NASA Astrophysics Data System (ADS)

    Costa, F.; Forest, F.; Puzo, A.; Rojat, G.

    1993-12-01

    The principles used in static conversion and the rise of the performances of the new switching devices contribue to increase the level of electromagnetic noises emitted by electronic converters. We have studied the way how these perturbations are created and coupled through their environment in conducted and radiated mode by a switching cell. This one can work in hard switching, zero current or voltage switching modes. We first outline the general problems of electromagnetic pollution and their metrology in converters. Then we describe the experimental environment. We analyse the mechanisms of generation of parasitic signals in a switching cell related to the electrical constraints and its switching mode. The simulated results, issued of the analytical models obtained, are confronted with the experimental ones. Then we show a method to calculate analytically the E and H near fields. It has been confirmed by experimental results. At last, we present, in a synthetic manner, the main results obtained, relative to the switching mode and the electrical constraints, using a new characterizing method. Theses results will allow the designer to incorporate the electromagnetic considerations in the conception of a converter. Les principes de commutation employés en conversion statique, l'évolution des performances statiques et dynamiques des composants, contribuent à faire des dispositifs de conversion statique de puissants générateurs de perturbations conduites et rayonnées. Nous nous sommes attachés à étudier les mécanismes de génération et de couplage des perturbations, tant en mode conduit que rayonné dans des structures à une seule cellule de commutation et fonctionnant selon les trois principaux modes de commutation : commutation forcée, à zéro de courant (ZCS), et à zéro de tension (ZVS). Après la mise en évidence de la problématique de pollution électromagnétique dans les structures et leur métrologie, nous décrivons l'environnement exp

  13. OzDES Spectroscopic Classification of DES13X3woy

    NASA Astrophysics Data System (ADS)

    Yuan, F.; Childress, M.; Sharp, R.; Lidman, C.; Parkinson, D.; Mould, J.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; D'Andrea, C.; Nichol, R.; Papadopoulos, A.; Sullivan, M.; Maartens, R.; Smith, M.; Barbary, K.; Bernstein, J. P.; Biswas, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Bloom, J. S.; Goldstein, D.; Kim, A.; Nugent, P.; Perlmutter, S.; Thomas, R. C.; Foley, R. J.; Desai, S.; Paech, K.; Smith, R. C.; Schubnell, M.; Kessler, R.; Covarrubias, R. A.; Cane, R.; Fischer, J. A.; Gladney, L.; March, M.; Sako, M.

    2014-01-01

    We report spectroscopic classification by OzDES of a supernova discovered by the Dark Energy Survey (ATel #4668). The spectrum (370-885nm) was obtained with the AAOmega Spectrograph (Saunders et al. 2004, SPIE, 5492, 389) and the 2dF fibre positioner at the Anglo-Australian Telescope (AAT). Object classification was performed using superfit (Howell and Wang, 2002, BAAS, 34, 1256), the details of which are reported in the table below.

  14. Concrete Masonry Designs: Educational Issue.

    ERIC Educational Resources Information Center

    Hertzberg, Randi, Ed.

    2001-01-01

    This special journal issue addresses concrete masonry in educational facilities construction. The issue's feature articles are: (1) "It Takes a Village To Construct a Massachusetts Middle School," describing a middle school constructed almost entirely of concrete masonry and modeled after a typical small New England village; (2) "Lessons Learned,"…

  15. Computer Technology and Social Issues.

    ERIC Educational Resources Information Center

    Garson, G. David

    Computing involves social issues and political choices. Issues such as privacy, computer crime, gender inequity, disemployment, and electronic democracy versus "Big Brother" are addressed in the context of efforts to develop a national public policy for information technology. A broad range of research and case studies are examined in an attempt…

  16. Current Issues Survey Report, 2007

    ERIC Educational Resources Information Center

    Camp, John S.; DeBlois, Peter B.

    2007-01-01

    The Eighth Annual EDUCAUSE Current Issues Survey asked campus information technology leaders to rate the most critical IT challenges facing them, their campuses, and/or their systems. Four findings associated with all respondents to this year's survey merit special mention. First, for the 2007 survey, the CIC decided to split a key issue choice…

  17. Traffic Calming: A Social Issue

    ERIC Educational Resources Information Center

    Crouse, David W.

    2004-01-01

    Substantial urban growth fueled by a strong economy often results in heavy traffic thus making streets less hospitable. Traffic calming is one response to the pervasiveness of the automobile. The issues concern built environments and involve multiple actors reflecting different interests. The issues are rarely technical and involve combinations of…

  18. Ethical Issues in Online Education

    ERIC Educational Resources Information Center

    Anderson, Bill; Simpson, Mary

    2007-01-01

    Teaching at a distance raises ethical issues particular to the distance context. When distance teaching is also online teaching, the situation is even more complex. Online teaching environments amplify the ethical issues faced by instructors and students. Online sites support complex discourses and multiple relationships; they cross physical,…

  19. Population. Global Issues Education Packet.

    ERIC Educational Resources Information Center

    Holm, Amy E.

    One of the most critical issues that faces humanity is the world population boom. The high rate of population growth can directly affect sensitive issues such as the state of the environment, economic development, health, resource uses, and consumption. Though we have achieved the capability to override many of nature's limitations, we live in a…

  20. Ethnic Studies: Issues and Approaches.

    ERIC Educational Resources Information Center

    Yang, Philip Q.

    This book offers a comprehensive definition of the field of ethnic studies, covering both major issues in the field and its theoretical and methodological approaches. It traces the origins and evolution of the discipline in the United States and maps its domain. Some of the current issues addressed include affirmative action, illegal/legal…

  1. Trustee Quarterly, 1990 (Four Issues).

    ERIC Educational Resources Information Center

    Trustee Quarterly, 1990

    1990-01-01

    This document consists of the four issues of the "Trustee Quarterly" for 1990. This series covers topics of current concern to community college trustees. The winter 1990 issue contains articles examining the pros and cons of board standing committees, the role of boards in planning and institutional effectiveness, innovative fund raising in…

  2. Self-Advocacy. Feature Issue.

    ERIC Educational Resources Information Center

    Hayden, Mary F., Ed.; Ward, Nancy, Ed.

    1994-01-01

    This feature issue newsletter looks at issues the self-advocacy movement is raising and the contributions it is making to the lives of people with developmental disabilities. Articles by self-advocates and advisors to self-advocacy organizations talk about their self-advocacy experiences, barriers to self-advocacy, and ways to support it. Primary…

  3. China and Japan (Theme Issue).

    ERIC Educational Resources Information Center

    Kiernan, Henry, Ed.; Pyne, John, Ed.

    1993-01-01

    This serial issue is devoted to the theme "China and Japan" and contains six articles that focus on educational, political, and cultural issues in the two Asian countries. In the first article, "China and Japan: A New Era in Relations with the United States," Henry Kiernan and John Pyne provide a brief overview of the history of United States'…

  4. Teaching Gender Issues through Literature.

    ERIC Educational Resources Information Center

    McClish, Glen

    The issues of empiricism and theory-building can be used in practical terms to discuss how literary texts can be used to elucidate gender issues in the classroom. For instance, two literary texts written early in this century--Thornton Wilder's "Our Town" and Ernest Hemingway's short story "Up in Michigan"--can illustrate important principles of…

  5. Drugs. Social Issues Resources Series.

    ERIC Educational Resources Information Center

    Goldstein, Eleanor C.; And Others

    The Social Issues Resources Series (SIRS) is a set of loose leaf units each of which is addressed to a different social issue. Each unit consists of articles which have been reproduced from newspapers, magazines, journals and government publications representing the prevailing spectrum of opinion, emphasis and complexity. Sixty articles are…

  6. Theoretical Issues in Family Research.

    ERIC Educational Resources Information Center

    Krauss, Marty Wyngaarden

    This presentation describes research on families with mentally retarded children, focusing on trends since 1983, the year that family research issues were reconceptualized in a paper titled "A Model of Stress, Coping, and Family Ecology" by Keith Crnic and others. The trend analysis concentrates on four issues: (1) the magnitude of the impact of…

  7. ERCMExpress. Volume 3, Issue 4

    ERIC Educational Resources Information Center

    Taymans, Mary Frances; McDonald, Dale

    2007-01-01

    The Emergency Response and Crisis Management (ERCM) Technical Assistance Center's "ERCMExpress" is a newsletter that provides comprehensive information on key issues in school emergency management. This issue, entitled "Emergency Management Opportunities and Challenges for Non-Public Schools," examines integrating non-public schools into emergency…

  8. Gender Issues in Art Education.

    ERIC Educational Resources Information Center

    McCoubrey, Sharon, Ed.

    2000-01-01

    The expectation of educators for more than a decade has been that they would be aware of and attend to gender issues. The British Columbia Visual Arts Curricula states "Gender-equitable education will initially focus on girls in order to redress historical inequities." However, it is important to be informed about the issues that adversely affect…

  9. Security Issues of Academic Libraries.

    ERIC Educational Resources Information Center

    Lorenzen, Michael G.

    This study examines and evaluates security issues in academic libraries and examines how educators in institutions of higher learning deal with them. Security issues include: the theft of library materials, the mutilation or vandalism of library materials, dealing with deranged and/or disruptive patrons, and assaults on library patrons and staff.…

  10. RESEARCH INTO EMERGING WASTE ISSUES

    EPA Science Inventory

    The purpose of this project is to investigate emerging waste issues. In particular, 2 issues have been raised in the last year that have major implications for the waste disposal industry: 1) waste gasification; and 2) proliferation of electronics waste.

    APPCD loaned a h...

  11. Issues in Communication. Number 1.

    ERIC Educational Resources Information Center

    International Inst. of Communications, London (England).

    Based on the papers and discussions of the 1977 Annual Conference of the International Institute of Communications, this publication provides a survey of major issues in communication. It deals with a variety of topics, including issues facing the 1979 World Administrative Radio Conference; news values and social priorities; the media in…

  12. ERCMExpress. Volume 3, Issue 2

    ERIC Educational Resources Information Center

    Schonfeld, David J.

    2007-01-01

    The Emergency Response and Crisis Management (ERCM) Technical Assistance Center's newsletter, "ERCMExpress," provides comprehensive information on key issues in school emergency management. This issue of "ERCMExpress," titled "Coping with the Death of a Student or Staff Member," highlights the range of impact death can have on a school community;…

  13. Issues in Designing Magnet Schools.

    ERIC Educational Resources Information Center

    Metz, Mary Haywood

    This paper, based loosely on findings presented in the other papers collected with it in a single volume, discusses general issues in designing magnet schools, focusing on three main themes: (1) the interdependence of program design and recruitment issues; (2) school level practices which help to turn racial desegregation into racial integration;…

  14. Issue Brief on Teacher Assistants

    ERIC Educational Resources Information Center

    Canadian Teachers' Federation (NJ1), 2009

    2009-01-01

    Generally speaking, teacher assistants provide needed support to teachers by carrying out a range of non-professional tasks in classrooms and schools. The growing use of teacher assistants in Canadian public schools is an issue that is embedded in a complex mix of related issues, policies and trends--class size in conjunction with class…

  15. Prise en compte des ``courants de London'' dans la modélisation des supraconducteurs

    NASA Astrophysics Data System (ADS)

    Bossavit, Alain

    1997-10-01

    A model is given, in variational form, in which volumic “Bean currents”, ruled by Bean's law, and surface “London currents” coexist. This macroscopic model generalizes Bean's one, by appending to the critical density j_c a second parameter, with the dimension of a length, similar to London's depth λ. The one-dimensional version of the model is investigated, in order to link this parameter with the standard observable H-M characteristics On propose un modèle, sous forme variationnelle, associant des “courants de Bean” volumiques, décrits par la loi de Bean, et des “courants de London”, surfaciques. Ce modèle macroscopique généralise celui de Bean, caractérisé par le courant critique j_c, et fait intervenir un second paramètre, homogène à une longueur, analogue au λ de London. La version unidimensionnelle du modèle est étudiée en détail de manière à relier ce paramètre à l'observation des caractéristiques H-M usuelles.

  16. La physique des bulles de champagne Une première approche des processus physico-chimiques liés à l'effervescence des vins de Champagne

    NASA Astrophysics Data System (ADS)

    Liger-Belair, G.

    2002-07-01

    bubble interface continuously increases and therefore continuously offers newly created surface to the adsorbed surface-active materials (around 5 mg/l, mostly composed of proteins and glycoproteins). Champagne bubbles experience an interesting competition between two opposing effects. Our results suggest that the bubble growth during ascent approximately balance the adsorption rate of surface-active compounds on the rising bubble. We also compared the behaviour of champagne bubbles with that of beer bubbles. It was found that beer bubbles showed a behaviour, very close to that of rigid spheres. This is not a surprising result, since beer contains much higher amounts of surface-active molecules (of order of several hundreds mg/l) likely to be adsorbed at a bubble interface. Furthermore, since the gas content is lower in beer, growth rates of beer bubbles are lower than those of champagne. As a result, the dilution effect due to the rate of dilatation of the bubble area may be too weak to avoid the rigidification of the beer bubble interface. In a third set of experiments, we used instantaneous high-speed photography techniques to freeze the dynamics of bubbles collapsing at the free surface of a glass poured with champagne. The process following bubble collapse and leading to the projection of a high-speed liquid jet above the free surface was captured. A structural analogy between the liquid jet following a bubble collapse and the liquid jet following a drop impact was presented. By drawing a parallel between the fizz in champagne wines and the “fizz of the ocean", we also suggested that droplets issued from champagne bursting bubbles contain much higher amounts of surface-active and potentially aromatic materials than the liquid bulk. The bursting of champagne bubbles is thus expected to play a major role in flavour release. Otherwise, since the first photographic investigation were published about fifty years ago, numerous experiments have been conducted with single

  17. Characterization of the Glycosyltransferase DesVII and Its Auxiliary Partner Protein DesVIII in the Methymycin/Pikromycin Biosynthetic Pathway†

    PubMed Central

    Borisova, Svetlana A.; Liu, Hung-wen

    2010-01-01

    The in vitro characterization of the catalytic activity of DesVII, the glycosyltransferase involved in the biosynthesis of the macrolide antibiotics methymycin, neomethymycin, narbomycin, and pikromycin in Streptomyces venezuelae, is described. DesVII is unique among glycosyltransferases in that it requires an additional protein component, DesVIII, for activity. Characterization of the metabolites produced by a S. venezuelae mutant lacking desVIII gene confirmed that desVIII is important for the biosynthesis of glycosylated macrolides, but can be replaced by at least one of the homologous genes from other pathways. The addition of recombinant DesVIII protein significantly improves the glycosylation efficiency of DesVII in the in vitro assay. When affinity-tagged DesVII and DesVIII proteins were co-produced in E. coli, they formed a tight (αβ)3 complex that is at least 103-fold more active than DesVII alone. The formation of the DesVII/DesVIII complex requires co-expression of both genes in vivo and cannot be fully achieved by mixing the individual protein components in vitro. The ability of DesVII/DesVIII system to catalyze the reverse reaction with the formation of TDP-desosamine was also demonstrated in a transglycosylation experiment. Taken together, our data suggest that DesVIII assists the folding of DesVII during protein production and remains tightly bound during catalysis. This requirement must be taken into consideration in the design of combinatorial biosynthetic experiments of new glycosylated macrolides. PMID:20695498

  18. Organisation des gesundheitlichen Verbraucherschutzes auf Bundesebene

    NASA Astrophysics Data System (ADS)

    Tschiersky-Schöneburg, Helmut; Büttner, Antje

    Zahlreiche Krisen wie Dioxin belastete Futtermittel, die missbräuchliche Verwendung von Antibiotika in der Schweinemast und nicht zuletzt das Auftreten von BSE in Deutschland erschütterten Ende der neunziger Jahre das Vertrauen der Bürger in die Sicherheit der Lebensmittel. Mit dem Weißbuch zur Lebensmittelsicherheit, das im Januar 2000 herausgegeben wurde, hatte die Europäische Kommission ihre Erfahrungen aus dem BSE-Geschehen in ein neues Konzept für den Verbraucherschutz eingearbeitet. Kernstücke des Konzepts sind die ganzheitliche Betrachtung der Lebensmittelsicherheit von der landwirtschaftlichen Erzeugung bis zum Verzehr und der Anspruch nach Transparenz und Unabhängigkeit der Risikobewertung.

  19. Formation et Evolution des Quasars et Contraintes cosmologiques

    NASA Astrophysics Data System (ADS)

    Hatziminaoglou, Evanthia

    2000-06-01

    Cette thèse porte sur l'étude de l'évolution des quasars. Elle en aborde certains aspects théoriques et observationnels, ainsi que la construction des grands échantillons de quasars dans le but à long terme de combiner le tout dans un test cosmologique géométrique pour déterminer les valeurs des paramètres cosmologiques Omega et Lambda. Les paramètres cosmologiques Omegaspan>et Lambdaspan>décrivent la géométrie globale de l'Univers. En faisant des hypothèses raisonnables sur la distribution spatiale et l'évolution des objets astrophysiques (galaxies, amas des galaxies, quasars), on peut déterminer les valeurs de ces paramètres qui sont cohérentes avec ces hypothèses. Les tests cosmologiques traditionnels ont besoin de ''chandelles standards'', objets dont les propriétés intrinsèques sont indépendantes des distances. De tels objets sont probablement fictifs. Néanmoins, certains de ces tests cosmologiques peuvent être adaptés si l'évolution individuelle, ou au moins l'évolution statistique d'une population d'objets est connue. La question de la nature de l'évolution des quasars a très vite été posée et des réponses ''phénoménologiques'' ont d'abord été données. Ces réponses ne faisaient que donner une forme mathématique à l'évolution mais n'expliquaient rien de la physique duphénomène. Les premières tentatives de construction d'un modèle physique, liées au processus d'accrétion sur un trou noir et à la théorie de la formation de l'Univers ont commencé à la fin des années 80. Depuis, des dizaines de modèles tentent d'expliquer les observations, qui sont les résultats de l'étude d'objets de plus en plus nombreux. Au cours de cette thèse, le test V/Vmax a été appliqué sur l'échantillon du Large Bright Quasar Survey en montrant 1) que l'échantillon était biaisé à cause des critères de sélection et 2) que la (simple) loi de Pure Evolution en Luminosité n'était pas une bonne approximation à tout

  20. Discovery and Classification of DES15S2kqw

    NASA Astrophysics Data System (ADS)

    Kasai, E.; Bassett, B.; Crawford, S.; Kniazev, A.; Childress, M.; D'Andrea, C.; Smith, M.; Sullivan, M.; Maartens, R.; Gupta, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.; Ahn, E.; Finley, D. A.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Kim, A. G.; Thomas, R. C.; Barbary, K.; Bloom, J. S.; Goldstein, D.; Nugent, P.; Perlmutter, S.; Foley, R. J.; Casas, R.; Castander, F. J.; Desai, S.; Paech, K.; Smith, R. C.; Schubnell, M.; Kessler, R.; Lasker, J.; Scolnic, D.; Brout, D. J.; Gladney, L.; Sako, M.; Wolf, R. C.; Brown, P. J.; Krisciunas, K.; Suntzeff, N.; Nichol, R.; Papadopoulos, A.

    2015-10-01

    We report optical spectroscopy of DES15S2kqw discovered by the Dark Energy Survey. The spectrum (380-820nm) was obtained using the Robert Stobie Spectrograph (RSS) on the South African Large Telescope (SALT).

  1. La détermination des distances: Sol, Hipparcos, GAIA.

    NASA Astrophysics Data System (ADS)

    Turon, C.

    Les parallaxes trigonométriques des étoiles les plus proches du soleil sont la base de la détermination des distances dans l'Univers. Elles permettent, par la calibration en luminosité des différents indicateurs de distance d'étalonner les distances d'abord dans notre Galaxie, puis dans les galaxies du Groupe Local, puis pour les galaxies plus lointaines. Cette base est, actuellement, très mince, et peu de types d'étoiles y sont représentés. Hipparcos va déjà apporter une amélioration sensible. Avec GAIA une révision complète des calibrations de luminosité de tous les indicateurs "primaires" serait directement possible.

  2. Current Issues: Critical Issues Confronting the Nation and the World [and] Current Issues Teacher's Guide.

    ERIC Educational Resources Information Center

    Whittaker, Lynn Page

    1991-01-01

    This annual publication contains reading materials designed to help students understand the complexities of the domestic and foreign policy issues facing the United States. The first portion of the book features background reading on the structure of the Federal Government. Next, 10 domestic policy issues are covered: the economy, education, civil…

  3. Issues in workforce composition analysis

    SciTech Connect

    Koeck, D.C.; Rogers, J.D.

    1996-05-01

    An issue of paramount interest to US industry is the supply and quality of human resources available for this country`s scientific and technological activities. The changing composition of the workforce and the responsibility that an organization has to assure equal opportunity, give rise to various issues. This paper discusses some of the issues associated with the scientific and technical workforce. Specifically, it explores some of the questions pertaining to workforce composition and measures of workforce composition. This paper should be useful to those responsible for personnel policies.

  4. Sequence analysis of peste des petits ruminants virus from ibexes in Xinjiang, China.

    PubMed

    Xia, J; Zheng, X G; Adili, G Z; Wei, Y R; Ma, W G; Xue, X M; Mi, X Y; Yi, Z; Chen, S J; Du, W; Muhan, M; Duhaxi, C; Han, T; Gudai, B; Huang, J

    2016-01-01

    Peste des petits ruminants (PPR) is an infectious disease caused by peste des petits ruminants virus (PPRV). While PPR mainly affects domestic goats and sheep, it also affects wild ungulates such as ibex, blue sheep, and gazelle, although there are few reports regarding PPRV infection in wild animals. Between January 2015 and February 2015, it was found for the first time that wild ibexes died from PPRV infection in Bazhou, Xinjiang, China, where a total of 38 ibexes (including young and adult ibexes) were found to have died abnormally from PPR-related issues. First, we tested for the presence of the F gene of PPRV by RT-PCR. Then, we compared the sequence of the isolated F gene from the ibex strain, termed PPRV Xinjiang/Ibex/2015, with those previously identified from small domestic ruminants from local areas near where the reported isolate was collected as well as those from other regions. The current sequence was phylogenetically classified as a lineage IV virus, and shared a high level of sequence identity (99.7%) with a previously described Xinjiang PPRV isolate. PMID:27323119

  5. Special Issue of Teaching Ideas.

    ERIC Educational Resources Information Center

    Health Education (Washington D.C.), 1986

    1986-01-01

    This special issue contains teaching strategies and suggestions for health-related activities at all educational levels. A few of the topics addressed by the 21 articles are heart disease, testicular cancer, hospital stress, family life, and sexual responsibility. (MT)

  6. Major Issues in School Finance

    ERIC Educational Resources Information Center

    McLure, William P.

    1969-01-01

    Interprets the contemporary issues in school finance as functions of three phenomena: (1) Educational needs of individuals and society, (2) governance, and (3) ecological characteristics of the population. (DE)

  7. Petroleum 1996: Issues and Trends

    EIA Publications

    1997-01-01

    Examines historical trends and focuses on major petroleum issues and the events they represent. It analyzes different dimensions of the petroleum industry and related markets in terms of how they relate to the volatility in petroleum markets.

  8. Cannabis: The Issue is Control.

    PubMed

    Lyman, Donald O

    2016-01-01

    Where is the national issue of cannabis (marijuana) regulation going? Recent actions at the State level are moving to guide us to a national perspective on how to control this new marketplace. PMID:26800184

  9. ECOLOGICAL CLASSIFICATION ISSUES AND RESEARCH

    EPA Science Inventory

    Purposes and need for ecological classification will be discussed. Some brief examples will highlight regional and watershed approaches, general issues of extrapolation and classification helpful to monitoring/assessment design for larger aquatic systems, and some specific concep...

  10. Physical characteristics of stream subbasins in the Des Moines River, Upper Des Moines River, and East Fork Des Moines River basins, southern Minnesota and northern Iowa

    USGS Publications Warehouse

    Sanocki, Christopher A.

    2000-01-01

    Data that describe the physical characteristics of stream subbasins upstream from selected sites on streams in the Des Moines River, Upper Des Moines River, and East Fork Des Moines River Basins, located in southwestern Minnesota, and northwestern Iowa, are presented in this report. The physical characteristics are the drainage area of the subbasin, the percentage area of the subbasin covered only by lakes, the percentage area of the subbasin covered by both lakes and wetlands, the main-channel length, and the main-channel slope. Stream sites include outlets of subbasins of at least 5 square miles, and locations of U.S. Geological Survey high-flow, and continuous-record gaging stations.

  11. Rôle des hyrates dans la formation de Titan et des satellites réguliers

    NASA Astrophysics Data System (ADS)

    Mousis, O.

    2001-12-01

    Cette these est dediee a l'etude de l'origine de Titan et de son atmosphere. Dans l'hypothese ou la subnebuleuse de Saturne etait geometriquement mince, le modele de disque turbulent utilise, derive des travaux de Dubrulle (1993), est moins dense que le modele de Prinn et Fegley (1981). De ce fait, les conversions de Co en CH4 et de N2 en NH3 ont ete inhibees dans la subnebuleuse, contrairement a ce qui est couramment admis pour interpreter la presence du methane dans l'atmosphere de Titan. C'est pourquoi nous avons developpe un nouveau scenario de la formation de titan, qui tient compte simultanement des contraintes resultant de la chimie de la subnebuleuse et des abondances de CH4, N2 et CH3D mesurees dans l'atmosphere du satellite. Nous faisons l'hypothese que ces gaz proviennent initialement de la vaporisation du nuage presolaire, qui s'effondra et forma le Soleil et son disque environnant. Lors du refroidissement de la nebuleuse, les volatils auraient ete pieges sous formes de clathrates d'hydrates dans les grains, puis dans les planetesimaux qu'ils formerent. Les planetesimaux hydrates a l'origine de la formation de Titan seraient alors des rescapes de l'effondrement hydsrodynamique de la feeding zone de Saturne. Ce scenario a ete applique aux subnebuleuses de Jupiter et d'Uranus, et a apporte un certain nombre de contraintes sur la formation des satellites reguliers de ces planetes. Le temps et la zone de formation des grains cometaires ont egalement ete estimes dans la nebuleuse solaire. Enfin, l'etude experimentale de la temperature de fusion du dihydrate d'ammoniac dans la gamme des hautes pressions a apporte des nouvelles donnees thermodynamiques qui permettront d'ameliorer les modeles de l'interieur de Titan.

  12. Characterizing Sleep Issues Using Twitter

    PubMed Central

    Chunara, Rumi; Chatterjee, Arnaub K; Bhandari, Aman; Fitzgerald, Timothy P; Jain, Sachin H; Brownstein, John S

    2015-01-01

    Background Sleep issues such as insomnia affect over 50 million Americans and can lead to serious health problems, including depression and obesity, and can increase risk of injury. Social media platforms such as Twitter offer exciting potential for their use in studying and identifying both diseases and social phenomenon. Objective Our aim was to determine whether social media can be used as a method to conduct research focusing on sleep issues. Methods Twitter posts were collected and curated to determine whether a user exhibited signs of sleep issues based on the presence of several keywords in tweets such as insomnia, “can’t sleep”, Ambien, and others. Users whose tweets contain any of the keywords were designated as having self-identified sleep issues (sleep group). Users who did not have self-identified sleep issues (non-sleep group) were selected from tweets that did not contain pre-defined words or phrases used as a proxy for sleep issues. Results User data such as number of tweets, friends, followers, and location were collected, as well as the time and date of tweets. Additionally, the sentiment of each tweet and average sentiment of each user were determined to investigate differences between non-sleep and sleep groups. It was found that sleep group users were significantly less active on Twitter (P=.04), had fewer friends (P<.001), and fewer followers (P<.001) compared to others, after adjusting for the length of time each user's account has been active. Sleep group users were more active during typical sleeping hours than others, which may suggest they were having difficulty sleeping. Sleep group users also had significantly lower sentiment in their tweets (P<.001), indicating a possible relationship between sleep and pyschosocial issues. Conclusions We have demonstrated a novel method for studying sleep issues that allows for fast, cost-effective, and customizable data to be gathered. PMID:26054530

  13. Commentary: Cultural Issues in Decisionmaking.

    PubMed

    Muaygil, Ruaim

    2016-04-01

    This case presents several fundamental ethical issues. The first issue is the patient's refusal of treatment (a nasogastric tube [NGT] insertion). Second, the patient's refusal of a seemingly beneficial treatment, combined with her medical history, ultimately necessitates an assessment of her decisionmaking capacity. Third, the sister's reluctance to participate in decisionmaking requires a discussion of appropriate surrogate decisionmakers. Finally, the main ethical component to this case is a cultural one, which should be addressed appropriately. PMID:26957460

  14. Les sarcomes des tissus mous: à propos de 33 cas

    PubMed Central

    Abdou, Jiddou; Elkabous, Mustapha; M'rabti, Hind; Errihani, Hassan

    2015-01-01

    L'objectif de cette étude est de rapporter les particularités épidémiologiques, cliniques, histologiques, thérapeutiques et évolutives des sarcomes des tissus mous à l'Institut National d'Oncologie et de définir les facteurs influençant la survie des patients. C'est une étude rétrospective de 33 cas de sarcome des tissus mous, colligés entre janvier 2008 et décembre 2010. Les critères d’éligibilité étaient un âge supérieur à 16 ans, une épreuve histologique d'un sarcome des tissus mous à l'exclusion des tumeurs stromales gastro-intestinales (GIST). Les items recueillis étaient: épidémiologiques, cliniques, histologiques, Radiologiques, et thérapeutiques. Des analyses univariées puis multivariées ont été réalisées à la recherche de facteurs influençant la survie à 2 ans. Il s'agit de 33 cas, 17 Hommes et 16 Femmes, l’âge moyen était de 43,21 ans (Extrêmes= 18-76 ans). La tumeur était localisée aux extrémités dans 24 cas (72,72%). Le type histologique prédominant était le Liposarcome dans 9 cas (27,27%). Le stade tumoral était localisé dans 25 cas (75,8%), métastatique dans 8 cas (24,2%). Vingt-cinq tumeurs ont été traitées chirurgicalement dont 21 cas (84%) de chirurgie conservatrice et 4 cas (16%) de chirurgie radicale. La radiothérapie a été réalisée chez 10 patients (30,3%). La chimiothérapie a été faite chez 20 patients. En analyse univariée les facteurs pronostiques étaient l’âge (p=0,03) et le stade tumoral (p=0,09). L’âge et le stade tumoral sont des facteurs pronostiques influençant la survie des sarcomes des tissus mous. PMID:27022434

  15. Peste des petits ruminants vaccine and vaccination in India: sharing experience with disease endemic countries.

    PubMed

    Singh, R P; Bandyopadhyay, S K

    2015-12-01

    Peste des petits ruminants, a viral disease of small ruminants, the control of which is important for poverty alleviation and to ensure livelihood security in Asia, Middle East and Africa. In recognition of these issues, we developed and applied vaccine and diagnostics to demonstrate effective control of PPR during preceding 6 years in a sub-population of small ruminants in India. Two south Indian states, namely Andhra Pradesh and Karnataka, strongly indicated possibility of PPR control with more than 90 % reduction in number of reported outbreaks of PPR, mostly through mass vaccination. Similarly, the situation at the national level also demonstrated a decline of more than 75 % in the number of reported outbreaks. Sharing these experiences may motivate other countries for similar initiatives leading to progressive control of PPR, which is in line with the initiatives of the organizations like FAO/OIE and the recent platforms on global PPR research alliance. PMID:26645031

  16. Caractérisation des convertisseurs matriciels : II. Synthèse des fonctions de connexion

    NASA Astrophysics Data System (ADS)

    François, B.; Cambronne, J. P.; Hautier, J. P.

    1996-05-01

    Knowing the wished conversion levels (-1,0,1) of a power converter, this paper describes a particular method for setting the corresponding states of switches into the matrix converter. In a first step, a mathematical analysis establishes the relations linking the states of switches with the conversion functions. Afterwards, the presented method gives the inverse relations which constitute the sequential part of the converter control. The turn-on and the turn-off sequences are designed by considering the on-line wished level conversions. This general method enhances the idea that a converter functionnality must be defined by its structure and its control. Cet article propose une méthode originale pour définir la séquence de commande d'un convertisseur à partir de la fonction de conversion globalement souhaitée. Les auteurs procèdent d'abord à une analyse mathématique précise des relations qui existent entre les états des interrupteurs et les fonctions de conversion obtenues. À partir de cette analyse, la méthode developpée permet d'établir systématiquement les relations inverses qui constituent alors le module séquentiel de la commande rapprochée du convertisseur. Les ordres d'ouverture et de fermeture des interrupteurs sont élaborés en considérant à tout instant les niveaux de conversion souhaités pour les grandeurs électriques. Cette méthode générale renforce l'idée que la fonction remplie par un convertisseur moderne doit être définie à la fois par sa structure et sa commande.

  17. La planification préalable des soins pour les patients en pédiatrie

    PubMed Central

    2008-01-01

    RÉSUMÉ Les progrès médicaux et technologiques ont permis d’ac-croître les taux de survie et d’améliorer la qualité de vie des nourrissons, des enfants et des adolescents ayant des maladies chroniques mettant la vie en danger. La planifi-cation préalable des soins inclut le processus relié aux discussions sur les traitements essentiels au maintien de la survie et la détermination des objectifs des soins de longue durée. Les dispensateurs de soins pédiatriques ont l’obligation éthique d’assimiler cet aspect des soins médicaux. Le présent document de principes vise à aider les dispensateurs de soins à discuter de la planification préalable des soins des patients pédiatriques dans diverses situations. La planification préalable des soins exige des communications efficaces afin de clarifier les objectifs des soins et de s’entendre sur les traitements pertinents ou non pour réaliser ces objectifs, y compris les mesures de réanimation et les mesures palliatives.

  18. De l'importance des orbites periodiques: Detection et applications

    NASA Astrophysics Data System (ADS)

    Doyon, Bernard

    L'ensemble des Orbites Periodiques Instables (OPIs) d'un systeme chaotique est intimement relie a ses proprietes dynamiques. A partir de l'ensemble (en principe infini) d'OPIs cachees dans l'espace des phases, on peut obtenir des quantites dynamiques importantes telles les exposants de Lyapunov, la mesure invariante, l'entropie topologique et la dimension fractale. En chaos quantique (i.e. l'etude de systemes quantiques qui ont un equivalent chaotique dans la limite classique), ces memes OPIs permettent de faire le pont entre le comportement classique et quantique de systemes non-integrables. La localisation de ces cycles fondamentaux est un probleme complexe. Cette these aborde dans un premier temps le probleme de la detection des OPIs dans les systemes chaotiques. Une etude comparative de deux algorithmes recents est presentee. Nous approfondissons ces deux methodes afin de les utiliser sur differents systemes dont des flots continus dissipatifs et conservatifs. Une analyse du taux de convergence des algorithmes est aussi realisee afin de degager les forces et les limites de ces schemes numeriques. Les methodes de detection que nous utilisons reposent sur une transformation particuliere de la dynamique initiale. Cette astuce nous a inspire une methode alternative pour cibler et stabiliser une orbite periodique quelconque dans un systeme chaotique. Le ciblage est en general combine aux methodes de controle pour stabiliser rapidement un cycle donne. En general, il faut connaitre la position et la stabilite du cycle en question. La nouvelle methode de ciblage que nous presentons ne demande pas de connaitre a priori la position et la stabilite des orbites periodiques. Elle pourrait etre un outil complementaire aux methodes de ciblage et de controle actuelles.

  19. Catalog Production for the DES Blind Cosmology Challenge

    NASA Astrophysics Data System (ADS)

    Busha, Michael T.; Wechsler, R. H.; Becker, M. R.; Erickson, B.; Evrard, A. E.

    2013-01-01

    The Blind Cosmology Challenge (BCC) is an effort by the Dark Energy Survey (DES) to test analysis tools for extracting cosmological information using a set of detailed synthetic galaxy catalogs. Here, we describe the creation of these synthetic sky catalogs based on requirements of the optical (DES) and the near-IR VISTA Hemisphere Survey, producing catalogs covering a quarter of the sky to z ˜ 2, with sources complete to r ˜ 25. Starting with a nested set of lightcone outputs of large, N-body simulation, galaxies are assigned to the dark matter distribution using an empirical algorithm that is tunable to match observed evolution of low-order galaxy population properties (counts and spatial clustering) in luminosity-color-density space. Galaxies are lensed by matter along the line of sight (including magnification, shape distortion, and multiple images), using a new algorithm that calculates shear with 3.22 arcsec resolution at galaxy positions in the full catalog. The catalog is well suited to support DES+VISTA joint studies of galaxy clustering, groups and clusters of galaxies, and gravitational lensing, and we highlight their application to the ongoing DES BBCC. Catalogs include ˜320 million galaxies and ˜150 million stars, with realistic colors, shapes and photometric errors. Using the expected DES photometric errors, three independent photometric redshift codes are run on the catalog, two of which produce full probability distributions. The synthetic observable catalog includes object position, magnitudes in the DES and VISTA bands, photometric errors, photometric redshifts, size, ellipticity, for each of ˜ 500 million objects. The galaxy distribution is additionally masked appropriately for the 5000 square degree DES footprint, including the impact of bright stars. In addition, we offer separate catalogs with magnitudes for additional existing and planned surveys, including SDSS, CFHTLS, HSC, LSST, and Euclid.

  20. Public participation in environmental issues

    SciTech Connect

    Pilot, J.

    1998-12-31

    The need for public participation in environmental issues has grown in the past five years. The Responsible Care{reg_sign} Program, developed by the chemical industry, as well as government requirements for citizens` input into regulatory review have initiated public committees for environmental management issues. This paper will discuss three programs that have been implemented in Ontario to assist in public participation in environmental issues covering the following: 1. Great Waste Management Debate held in co-operation with Government, Boards of Trade, Industry, and Youth; 2. Public Liaison committee for Ontario`s Resource Recovery -- Waste to Energy Facility operating in the Region of Peel, the role they have played in its operation with the community; and 3. Brampton Environmental Community Advisory Panel, initiated by the Brampton Chemical Association`s need under Responsible Care for a public program to address concern related to company`s environmental issues in the community. As Chair of all three Committees, the paper will cover the benefits of the committees for public input and review of environmental issues related to environmental management.

  1. Ethical issues in exercise psychology.

    PubMed

    Pauline, Jeffrey S; Pauline, Gina A; Johnson, Scott R; Gamble, Kelly M

    2006-01-01

    Exercise psychology encompasses the disciplines of psychiatry, clinical and counseling psychology, health promotion, and the movement sciences. This emerging field involves diverse mental health issues, theories, and general information related to physical activity and exercise. Numerous research investigations across the past 20 years have shown both physical and psychological benefits from physical activity and exercise. Exercise psychology offers many opportunities for growth while positively influencing the mental and physical health of individuals, communities, and society. However, the exercise psychology literature has not addressed ethical issues or dilemmas faced by mental health professionals providing exercise psychology services. This initial discussion of ethical issues in exercise psychology is an important step in continuing to move the field forward. Specifically, this article will address the emergence of exercise psychology and current health behaviors and offer an overview of ethics and ethical issues, education/training and professional competency, cultural and ethnic diversity, multiple-role relationships and conflicts of interest, dependency issues, confidentiality and recording keeping, and advertisement and self-promotion. PMID:17036424

  2. Intellectually Gifted Students: Issues and Policy Implications. Policy Issues.

    ERIC Educational Resources Information Center

    Howley, Craig B.

    The paper examines policy issues in the area of gifted education. The first section reviews the problem area including definitions of giftedness and aims of gifted education. The next section briefly outlines major research influences which focus on learning rate, socialization, school achievement, and life achievement. The third section reviews…

  3. Critical Issues in Adult Probation: Issues in Probation Management.

    ERIC Educational Resources Information Center

    Carlson, Eric W.; Parks, Evalyn C.

    These materials, gathered through an intensive review of computer searches in sociopsychological and criminal justice databases, library holdings at Ohio State University, publications from the National Criminal Justice Reference Service, and telephone/mail contacts with state and country probation systems, examine issues in probation management…

  4. Ethical & Legal Issues in School Counseling. Chapter 6: Special Issues.

    ERIC Educational Resources Information Center

    Sampson, James P., Jr.; And Others

    This document contains chapter 6 (5 articles) of a collection of 35 articles primarily from American Association for Counseling and Development (AACD) publications on the most important legal and ethical topics about which all school counselors need to be informed. "Ethical Issues Involved With the Use of Computer-Assisted Counseling, Testing, and…

  5. Policy Issues and Process. Issues in Education for Adults, #1.

    ERIC Educational Resources Information Center

    Whaples, Gene C., Comp.; Rivera, William M., Comp.

    This publication, the first of a planned series, is intended to advance discussion by professionals and, hopefully, the public about education for adults--its purposes, control, and programs. Four essays are included, each with a distinct theme and purpose. However, all the essays relate to the major issues in adult education, national policy,…

  6. Issues in Perspective. Critical Issues Papers 1-17.

    ERIC Educational Resources Information Center

    Duttweiler, Patricia Cloud

    The papers in this collection are based on the document "Perspectives on Performance-Based Incentive Plans" and offer brief overviews of the following critical issues in education: (1) performance-based incentive plans; (2) needed organizational changes; (3) successful and unsuccessful teacher incentive plans; (4) compensation strategies and…

  7. Contributions a l'etude des lidars a champs visuels multiples

    NASA Astrophysics Data System (ADS)

    Roy, Gilles

    On presente un modele, base sur la diffraction et l'optique geometrique, liant les signaux lidar a champs multiples a la densite de distribution de la taille des particules. On ecrit la relation sous forme matricielle ce qui permet d'obtenir la densite de distribution apparente de la taille des particules par inversion matricielle avec contrainte. On interprete la perturbation causee par la contribution de l'optique geometrique au signal lidar comme de la diffraction causee par une particule de diametre d'environ un micron. La densite de distribution apparente est corrigee a posteriori en calculant la contribution relative des differents ordres de diffusion a l'elargissement de la fonction de phase des particules. La validite du modele est supportee par des simulations Monte Carlo et par des resultats experimentaux obtenus sous des conditions controlees. Finalement, on applique avec succes, la technique d'inversion aux mesures lidar multichamps obtenues sur des nuages.

  8. Ethical issues in livestock cloning.

    PubMed

    Thompson, P B

    1999-01-01

    Although cloning may eventually become an important technology for livestock production, four ethical issues must be addressed before the practice becomes widespread. First, researchers must establish that the procedure is not detrimental to the health or well-being of affected animals. Second, animal research institutions should evaluate the net social benefits to livestock producers by weighing the benefits to producers against the opportunity cost of research capacity lost to biomedical projects. Third, scientists should consider the indirect effects of cloning research on the larger ethical issues surrounding human cloning. Finally, the market structure for products of cloned animals should protect individual choice, and should recognize that many individuals find the prospect of cloning (or consuming cloned animals) repugnant. Analysis of these four issues is complicated by spurious arguments alleging that cloning will have a negative impact on environment and genetic diversity. PMID:15719505

  9. Sports medicine: some ethical issues.

    PubMed

    Sim, J

    1993-06-01

    The ethical aspects of sports medicine have hitherto received little scrutiny, in contrast to its legal implications, which have recently been subject to much greater discussion. However, the differences that are apparent between sports medicine and 'mainstream' areas of clinical practice can shed new light on a number of the central issues within health-care ethics. By means of hypothetical case studies, this paper seeks to examine some of these issues within a sports medicine context. Specific attention will be paid to the concepts of autonomy and paternalism, issues to do with truthfulness, and the question of conflicting professional loyalties. It is suggested that the ethics of sports medicine warrant further and more detailed examination. PMID:8358592

  10. Ruby on Rails Issue Tracker

    NASA Technical Reports Server (NTRS)

    Rodriguez, Juan Jared

    2014-01-01

    The purpose of this report is to detail the tasks accomplished as a NASA NIFS intern for the summer 2014 session. This internship opportunity is to develop an issue tracker Ruby on Rails web application to improve the communication of developmental anomalies between the Support Software Computer Software Configuration Item (CSCI) teams, System Build and Information Architecture. As many may know software development is an arduous, time consuming, collaborative effort. It involves nearly as much work designing, planning, collaborating, discussing, and resolving issues as effort expended in actual development. This internship opportunity was put in place to help alleviate the amount of time spent discussing issues such as bugs, missing tests, new requirements, and usability concerns that arise during development and throughout the life cycle of software applications once in production.

  11. Surpoids et obésité dans la population générale de 5 à 19 ans en milieu urbain bamakois (Mali)

    PubMed Central

    Oumar Bâ, Hamidou; Menta, Ichaka; Camara, Youssouf; Doumbia, Plutôt Seydou; Diarra, Mamadou Bocary

    2014-01-01

    Introduction Déterminer la prévalence du surpoids et de l'obésité dans la population âgée de 5 à 19 ans et fournir des données de référence pour de futures études. Méthodes Notre échantillon est issu de la première étude sur les pathologies cardiovasculaires basée sur l'approche STEP de l'Organisation Mondiale de la Santé (OMS) en sélectionnant tous les sujets âgés de 5 à 19 ans. Nous avons utilisé les méthodes de l'OMS et de l'International Obesity Task Force (IOTF) pour déterminer la prévalence du surpoids et de l'obésité dans la population générale. Résultats La moyenne d’âge était de 11,75 ans ± 4,387 et le sex-ratio M:F était de 0,79. les moyennes pour le poids et la taille étaient de 36,85 kg et 143,48 cm. Selon les critères OMS 1,61% des garçons et 3,28% des filles étaient en surpoids et 0,92% des garçons contre 1,46% des filles obèses. Selon les critères de l'IOTF 4,10% des garçons et 5,94% des filles étaient en surpoids tandis que 0,72% des garçons et 2,68% des filles étaient obèses. Conclusion Malgré sa faible prévalence le surpoids et l'obésité doivent être régulièrement étudiés pour reconnaître des tendances et prendre des mesures adéquates de prévention. Les 2 méthodes utilisées ont permis d'avoir des données de référence pour de futures études au Mali et ailleurs. PMID:25932064

  12. Workplace bullying: an emergent issue.

    PubMed

    Essen, S Donovan; Esquivel, Cynthia; Jha, Pankaj

    2014-09-01

    All companies, including dentists, rely on their staff to represent their firms in the most positive and effective manner. Today's managers face a multitude of issues, and as such, they must walk a fine line of fostering a productive, harmonious and safe working environment for their employees. Over the last several decades it is apparent that on the- job sexual harassment is no longer the leading issue of employee complaints. Rather, the organization issue which was investigated is workplace bullying, also commonly referred to as employee harassment. Risk management is no longer limited to avoiding malpractice issues but also preventing litigation created by poor organizational behavior. The primary purpose of this paper is to explore the background of workplace bullying and how it affects today's managers and their employees, customers and suppliers. In other words, the scope of this paper will feature research on past studies, results and conclusions. Since workplace bullying affects all levels of a corporation, it must be stated that the concern and focus of this paper is for today's manager to understand the background and history of workplace bullying, and what they can do to foster a safe working environment and prevent the bully from creating mental and physical harm to their employees. This paper details the history of workplace bullying and how management, employees and suppliers deal with and address the issue. Lastly, this treatise looks at risk management from a manger/dentist's perspective, the assessment/conclusion summarizes the implications for managers regarding how they must handle the issue or risk harm to the employee and/or serious legal ramifications. PMID:25284567

  13. Liquid metal heat transfer issues

    SciTech Connect

    Hoffman, H.W.; Yoder, G.L.

    1984-01-01

    An alkali liquid metal cooled nuclear reactor coupled with an alkali metal Rankine cycle provides a practicable option for space systems/missions requiring power in the 1 to 100 MW(e) range. Thermal issues relative to the use of alkali liquid metals for this purpose are identified as these result from the nature of the alkali metal fluid itself, from uncertainties in the available heat transfer correlations, and from design and performance requirements for system components operating in the earth orbital microgravity environment. It is noted that, while these issues require further attention to achieve optimum system performance, none are of such magnitude as to invalidate this particular space power concept.

  14. Issues in the standard model

    SciTech Connect

    Gaillard, M.K.

    1983-04-01

    Focussing on the standard electroweak model, we examine physics issues which may be addressed with the help of intense beams of strange particles. I have collected miscellany of issues, starting with some philosophical remarks on how things stand and where we should go from here. I will then focus on a case study: the decay K/sup +/ ..-->.. ..pi../sup +/ + nothing observable, which provides a nice illustration of the type of physics that can be probed through rare decays. Other topics I will mention are CP violation in K-decays, hyperon and anti-hyperon physics, and a few random comments on other relevant phenomena.

  15. Ethical Issues in Cardiac Surgery

    PubMed Central

    Kavarana, Minoo N.; Sade, Robert M.

    2012-01-01

    While ethical behavior has always been part of cardiac surgical practice, ethical deliberation has only recently become an important component of cardiac surgical practice. Issues such as informed consent, conflict of interest, and professional self-regulation, among many others, have increasingly attracted the attention of cardiac surgeons. This review covers several broad topics of interest to cardiac surgeons and cardiologists, and treats several other topics more briefly. There is much uncertainty about what the future holds for cardiac surgical practice, research, and culture, and we discuss the background of ethical issues to serve as a platform for envisioning what is to come. PMID:22642634

  16. Reproductive issues in anorexia nervosa

    PubMed Central

    Hoffman, Elizabeth R; Zerwas, Stephanie C; Bulik, Cynthia M

    2011-01-01

    Despite a high prevalence of menstrual irregularities, women with anorexia nervosa are becoming pregnant. The physical and psychological demands of pregnancy and motherhood can represent an immense challenge for women already struggling with the medical and psychological stress of an eating disorder. This article summarizes key issues related to reproduction in women with anorexia nervosa, highlighting the importance of preconception counseling, adequate gestational weight gain, and sufficient pre- and post-natal nutrition. Postpartum issues including eating disorder symptom relapse, weight loss, breastfeeding, and risk of perinatal depression and anxiety are also discussed. PMID:22003362

  17. Issues in Shuttle System Instrumentation

    NASA Technical Reports Server (NTRS)

    James, George

    2004-01-01

    The purose: a) Customer's perspective on Space Shuttle Return to Flight instrumentation; b) Focus on the difficult instrumentation issues; and c) Enable a discussion of new technologies (i.e.- NANO/MEMS/Small Tech) that could enhance Shuttle instrumentation posture. The T-10 Umbilical allows the vehicle instruments to be monitored and recorded prior to each launch and retract during launch.Launch Complex Instrumentation are instruments needed for assessment of Launch Commit Criteria (LCC) Salt-air and launch environments are issues. Instrumentation (Drag-On Instrumentation) can be added as needed to the vehicle for non-flight use. The current Roll-out Fatigue Testing is a primary example.

  18. Regles de fusion en theorie des champs conformes

    NASA Astrophysics Data System (ADS)

    Begin, Luc

    1999-10-01

    Les théories de champs conformes constituent un domaine de recherche très actif avec de nombreuses applications en physique statistique, en matière condensée, en théorie des cordes, en mathématiques, etc. Nous analysons ici le calcul des règles de fusion dans les modèles Wess- Zumino-Witten par des méthodes positives. Les règles de fusion sont des quantités importantes puisqu'elles indiquent comment se combinent les champs primaires de la théorie. L'approche présentée est basée sur l'hypothèse que les règles de fusion sont décrites par un système d'inéquations linéaire et homogène et mène au concept original de «base de fusion». Cette approche simple et générale permet d'utiliser les méthodes combinatoires et de programmation linéaire pour construire les fonctions génératrices et les bases de fusion. Cette méthode permet d'obtenir des résultats originaux et explicites pour les algèbres su (3), su (4) et sp (4).

  19. Problemes en enseignement fonctionnel des langues (Problems in the Functional Teaching of Languages). Publication B-103.

    ERIC Educational Resources Information Center

    Alvarez, Gerardo, Ed.; Huot, Diane, Ed.

    Articles include: (1) "L'elaboration du materiel pedagogique pour des publics adultes" (The Elaboration of Teaching Materials for the Adult Public) by G. Painchaud-Leblanc, (2) "L'elaboration d'un programme d'etudes en francais langue seconde a partir des donnees recentes en didactique des langues" (The Elaboration of a Program of Study in French…

  20. Family Economic Issues & Public Policy.

    ERIC Educational Resources Information Center

    Kimsey, Peggy Poling; Paynter, Mary Ann

    Emerging from two graduate seminars designed to increase the involvement of home economists in public policy, this publication includes course outlines, models, and papers on selected issues concerning family-related government policy. The structure and requirements of the two seminars, held in 1978 at the University of Kentucky, are described. A…

  1. Demographics and Issues of Retention

    ERIC Educational Resources Information Center

    Arnold, Richard E.

    2004-01-01

    Higher education academicians are concerned with issues of enrollment management; distance education; virtual classrooms; international education; and diversity. However, in this new society, producing quality students remains the central focus. To fulfill this responsibility, the university must: Provide students with opportunities that encourage…

  2. Migrant Health Issues. Monograph Series.

    ERIC Educational Resources Information Center

    National Center for Farmworker Health, Inc., Austin, TX.

    This document contains 10 short monographs on priority issues relevant to the health and well-being of migrant and seasonal farmworkers and their families. An introduction by Daniel Hawkins discusses the important role of migrant health centers in providing primary and preventive health care services to this disadvantaged and underserved…

  3. Psychosocial Issues in Learning Disabilities.

    ERIC Educational Resources Information Center

    Heisler, Alice B.

    1983-01-01

    Emotional development from infancy to adolescence is traced and the effects of psychosocial issues on a child with a learning disability are considered for five of E. Erikson's seven proposed stages (trust, autonomy, initiative, industry, adolescence). The need for intervention and parent counseling at each state is emphasized. (CL)

  4. ERCMExpress. Volume 2, Issue 7

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of ERCMExpress presents the topic "Schools Respond to Infectious Disease." Every year, schools confront a range of infectious diseases such as chicken pox, lice, ringworm and seasonal influenza. In response, faculty and staff work together to control the outbreak, quell fears and dispel rumors. For example, school administrators may…

  5. An Intellectual Freedom Theme Issue.

    ERIC Educational Resources Information Center

    Bolner, Myrtle Smith, Ed.

    1986-01-01

    Prepared by an intellectual freedom committee, this issue is intended to aid librarians in thinking about intellectual freedom when confronted with the current creationism controversy. A manual containing documents and resources on intellectual freedom, a bibliography of pro- and anti-creationism materials, and results of a censorship survey are…

  6. Current Issues in Flexibility Fitness.

    ERIC Educational Resources Information Center

    Knudson, Duane V.; Magnusson, Peter; McHugh, Malachy

    2000-01-01

    Physical activity is extremely important in maintaining good health. Activity is not possible without a certain amount of flexibility. This report discusses issues related to flexibility fitness. Flexibility is a property of the musculoskeletal system that determines the range of motion achievable without injury to the joints. Static flexibility…

  7. Legal Issues in Integrity Testing.

    ERIC Educational Resources Information Center

    Arnold, David W.

    Legal issues at the state and constitutional levels and associated misconceptions related to written preemployment integrity tests are addressed. Common misconceptions include the beliefs that: (1) such tests fall within the purview of state antipolygraph statutes; (2) unfair discrimination doctrines are violated by integrity testing; and (3)…

  8. Household Waste. Issues and Opportunities.

    ERIC Educational Resources Information Center

    Knaus, Andy; And Others

    The purpose of this booklet is to provide citizens with information about household waste and to indicate how they can contribute to its reduction. Information indicates how each individual can reduce waste by adopting new habits, making informed choices, and becoming involved in community action. Discussed are: (1) specific issues of general and…

  9. Educational Issues in Childhood Cancer.

    ERIC Educational Resources Information Center

    Armstrong, Daniel F.; Horn, Marianna

    1995-01-01

    Describes school issues for children with cancer. Presents the relationship between school performance and both the acute and long-term consequences of the type of cancer, radiation therapy, and chemotherapy. Reviews the results of the studies of the cognitive and academic effects of cranial radiation and chemotherapy, and a developmental model…

  10. State Issues Digest. First Edition.

    ERIC Educational Resources Information Center

    Reindl, Travis

    This report is intended to provide current information and integrated analysis of state-level higher education policy developments. Part 1 considers state funding support in the following categories: changing rules, effects of changing rules, survival in a changing game, and the growth industry of higher education. Part 2 examines issues concerned…

  11. Menopause: Salient Issues for Counselors.

    ERIC Educational Resources Information Center

    Patterson, Marilyn M.; Lynch, Ann Q.

    1988-01-01

    Discusses issues surrounding menopause, with the idea that counselors are in an ideal position to help change attitudes toward viewing menopause as a time of positive change rather than a time of psychological distress. Reviews historical, sociological, psychological, and attitudinal factors that account for negative responses associated with…

  12. Mentoring: Contemporary Principles and Issues.

    ERIC Educational Resources Information Center

    Bey, Theresa M., Ed.; Holmes, C. Thomas, Ed.

    In the spirit of educational reform efforts, an initiative exists to restructure the education of teachers through collaborative action, using mentoring to build alliances. This monograph, based on contemporary principles and issues of mentoring, presents ways to conceptualize the professional preparation and development of teachers. Following a…

  13. Introduction to the Special Issue.

    ERIC Educational Resources Information Center

    Petrosino, Anthony

    2003-01-01

    Introduces the articles of this special issue focusing on randomized field trials in criminology. In spite of the overall lack of randomized field trials in criminology, some agencies and individuals are able to mount an impressive number of field trials, and these articles focus on their experiences. (SLD)

  14. Current Issues in Child Development.

    ERIC Educational Resources Information Center

    Scott, Myrtle, Ed.; Grimmett, Sadie, Ed.

    This book includes papers presented at Indiana University's International Conference on Young Children, which focused on basic research, early education programming and sociopolitical issues, relating all three to policymaking. Among the presenters were Basil Bernstein, Nicholas Anastasiow, Sara Smilansky, Virginia Shipman, Bettye Caldwell and Ira…

  15. Environmental issues affecting CCT development

    SciTech Connect

    Wainman, B.

    1997-12-31

    The author discusses her thoughts on prospects for an energy policy from this Congress. She doesn`t believe the country will see any big sweeping energy policy acts or even utility deregulation in the next two years. Education on the issues is necessary. The author discusses the impacts for clean coal technologies and recommends continued aggressive work on deployment.

  16. Complicating Issues in Holocaust Education

    ERIC Educational Resources Information Center

    Lindquist, David H.

    2010-01-01

    Confronting the Holocaust in a classroom setting involves a complex undertaking that demands careful planning as educators develop and present curricula on the subject to their students. This article explores another problematic factor involved in teaching the Shoah, that is, several issues that exist outside the content/pedagogical framework but…

  17. Providers issue brief: alternative providers.

    PubMed

    Rothouse, M

    1999-06-29

    Access by managed care plan enrollees, scope of practice issues and fee reimbursement by Medicaid and third parties such as insurance carriers is the engine that drives legislation recognizing alternative health care providers--chiropractors, acupuncturists, physical therapists, naturopaths, massage therapists, homeopaths, and dietitians and nutritionists. PMID:11073386

  18. "Love" and Math. Issue Brief

    ERIC Educational Resources Information Center

    Jerald, Craig D.

    2006-01-01

    This is the first in a series of issue briefs to be written for The Center for Comprehensive School Reform and Improvement during 2006. A longstanding tenet of American education--one built into the very fabric of teacher training and licensure--is that elementary teachers need only general teaching skills and that having a caring personality is…

  19. Rewarding Teachers: Issues and Incentives.

    ERIC Educational Resources Information Center

    Newcombe, Ellen

    This paper discusses some of the issues behind the current debate on merit pay for teachers. A brief history is presented of performance-based compensation systems. The difficulties in arriving at a consensus on a valid definition of merit pay are pointed out, and examples are presented of various merit plans, such as master teaching plans, career…

  20. Self-Determination. Feature Issue.

    ERIC Educational Resources Information Center

    IMPACT, 1994

    1994-01-01

    This theme issue explores the relevance of self-determination for persons with developmental disabilities across the life span, ways in which it is or can be expressed, and obstacles to its exercise. The articles show the futility of enhancing self-determination by teaching choice-making skills if environments offer no opportunities to exercise…

  1. ERCMExpress. Volume 2, Issue 2

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of the Emergency Response and Crisis Management (ERCM) Technical Assistance Center's "ERCMExpress" introduces the National Clearinghouse for Educational Facilities (NCEF), a free public service that provides information on planning, designing, funding, building, improving and maintaining safe, healthy, high-performance schools. NCEF is…

  2. Management Issues & Innovation. Chapter 10.

    ERIC Educational Resources Information Center

    Acampora, Alfonso P., Ed.; Nebelkopf, Ethan, Ed.

    This document contains 11 papers from the ninth World Conference of Therapeutic Communities (TCs) that deal with management issues and innovations within TCs. Papers include: (1) "Support or Restriction of TCs: Governmental Interation vs. Self-Reliance" (Richard Pruss); (2) "Governmental Support: A Swedish Perspective" (Lars Bremberg); (3)…

  3. Commentary: Indigenous Health Special Issue

    ERIC Educational Resources Information Center

    Tonmyr, Lil; Blackstock, Cindy

    2010-01-01

    This commentary highlights indigenous public health research from a special issue of the International Journal of Mental Health and Addiction dealing with child maltreatment, mental health, substance abuse and gambling. We focus on the emerging and growing research movement in Indigenous research through three important themes: 1) worldview and…

  4. Invidious Discrimination: Second Generation Issues

    ERIC Educational Resources Information Center

    Simpson, Robert J.; Dee, Paul

    1976-01-01

    Discusses school law issues dealing with various forms of invidious discrimination. Considers discrimination based on forms of involuntary association (ethnicity, economic status, primary language, and maturity) and forms of voluntary association (sexual proclivity, marital status, pregnancy and parenthood, self-expression and appearance, religion…

  5. Key Issues in Hadronic Physics

    SciTech Connect

    Simon Capstick; et. Al.

    2000-12-01

    A group of fifty physicists met in Duck, NC, Nov. 6-9 to discuss the current status and future goals of hadronic physics. The main purpose of the meeting was to define the field by identifying its key issues, challenges, and opportunities. The conclusions, incorporating considerable input from the community at large, are presented in this white paper.

  6. ERCMExpress. Volume 2, Issue 1

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of the Emergency Response and Crisis Management (ERCM) Technical Assistance Center's "ERCMExpress" focuses on integrating students with special needs and disabilities into emergency response and crisis management planning. Meeting the needs of students with disabilities and special needs in the event of an emergency does not have to be…

  7. Resolving Ethical Issues at School

    ERIC Educational Resources Information Center

    Benninga, Jacques S.

    2013-01-01

    Although ethical dilemmas are a constant in teachers' lives, the profession has offered little in the way of training to help teachers address such issues. This paper presents a framework, based on developmental theory, for resolving professional ethical dilemmas. The Four-Component Model of Moral Maturity, when used in conjunction with a…

  8. Issues for the 1990s.

    ERIC Educational Resources Information Center

    Weiner, Edith; Brown, Arnold

    1986-01-01

    Discussed are the issues now emerging that seem likely to dominate thinking, planning, and decision-making in the United States and elsewhere during the next decade. These include campus unrest, China as a world economic force, controlling health-care, birth defects, role of the computer in education, and human language/computer language. (RM)

  9. Photovoltaics radiometric issues and needs

    SciTech Connect

    Myers, D.R.

    1995-11-01

    This paper presents a summary of issues discussed at the photovoltaic radiometric measurements workshop. Topics included radiometric measurements guides, the need for well-defined goals, documentation, calibration checks, accreditation of testing laboratories and methods, the need for less expensive radiometric instrumentation, data correlations, and quality assurance.

  10. Ethical issues in rare diseases.

    PubMed

    Borski, Krzysztof

    2015-01-01

    Scientific, technical and medical advances continue to raise consequential ethical questions and dilemmas also in the field of rare diseases. Difficult and complex issues of medical ethics in rare diseases are presented and several different ethical problems, like those regarding inborn errors of metabolism, are discussed. PMID:26982768

  11. Ethical Issues Related to Restructuring.

    ERIC Educational Resources Information Center

    Mielke, Patricia L.; Schuh, John H.

    1995-01-01

    Offers a framework for thinking about ethical principles through the use of codes of ethics. Examines the ethical issues of restructuring and discusses specific ethical dilemmas. Specifically outlines ethics related to resources allocation and management, and details critical points in restructuring. Argues that ethical guidelines help shape…

  12. Food & Environment. Teaching Global Issues.

    ERIC Educational Resources Information Center

    Gage, Susan

    1989-01-01

    Through articles and activities designed for the senior secondary level, students examine the food production system in British Columbia and the world and explore creative, sustainable alternatives for food production. A description of raising food in the first world with the critical issues of energy use and environmental degradation precedes a…

  13. ERCMExpress. Volume 2, Issue 3

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of the Emergency Response and Crisis Management (ERCM) Technical Assistance Center's "ERCMExpress" promotes emergency exercises as an effective way to validate school safety plans. Simulations of emergency situations, or emergency exercises, are integral to a sound school safety plan. They offer opportunities for district and schools to…

  14. Video Display Terminals: Radiation Issues.

    ERIC Educational Resources Information Center

    Murray, William E.

    1985-01-01

    Discusses information gathered in past few years related to health effects of video display terminals (VDTs) with particular emphasis given to issues raised by VDT users. Topics covered include radiation emissions, health concerns, radiation surveys, occupational radiation exposure standards, and long-term risks. (17 references) (EJS)

  15. Focus issue: signaling across membranes.

    PubMed

    Gough, Nancy R

    2005-12-01

    This week's issues of Science and Science's STKE focus on movement of molecules and information across cellular membranes. Science highlights the mechanisms by which proteins, ions, and DNA cross the membranes of eukaryotic and prokaryotic cells. STKE addresses how information is transmitted across cell membranes to allow cells to communicate with each other and to respond to signals in their environments. PMID:16333016

  16. Capacity Issue Looms for Vouchers

    ERIC Educational Resources Information Center

    Zehr, Mary Ann

    2011-01-01

    State-level momentum in support of vouchers and tax credits that help students go to private schools highlights what has been a largely theoretical issue: private school capacity to support voucher-financed enrollment. Academics say the national supply of seats in secular and religious private schools is sufficient to meet short-term demand from…

  17. Cybernetics and Education (Special Issue)

    ERIC Educational Resources Information Center

    Kopstein, Felix F., Ed.

    1977-01-01

    This is a special issue examining the potential of cybernetics in educational technology. Articles discuss: cybernetic methods, algorithms, feedback learning theory, a structural approach to behavioral objectives and criterion-referenced testing, task specifications and diagnosis, teacher-child interaction, educational development, teaching…

  18. Privacy Issues and New Technologies.

    ERIC Educational Resources Information Center

    Colman, Sue

    1997-01-01

    Issues of privacy, anonymity, and computer security emerging with advancing information technology are outlined, and implications for universities are discussed. Emphasis is on the Australian context and on Australian government and international initiatives concerning privacy. Sensitive information categories are identified, and measures…

  19. Consumer Controlled Housing. Feature Issue.

    ERIC Educational Resources Information Center

    Skarnulis, Edward, Ed.; Lakin, K. Charlie, Ed.

    1990-01-01

    This "feature issue" reports on consumer-controlled housing for persons with developmental disabilities, and explores housing and service options that empower individuals with disabilities to live their lives with independence, privacy, and freedom of choice. It includes an excerpt from the Association for Retarded Citizens position statement on…

  20. Socioscientific Issues: Theory and Practice

    ERIC Educational Resources Information Center

    Zeidler, Dana L.; Nichols, Bryan H.

    2009-01-01

    Drawing upon recent research, this article reviews the theory underlying the use of socioscientific issues (SSI) in science education. We begin with a definition and rationale for SSI and note the importance of SSI for advancing functional scientific literacy. We then examine the various roles of context, teachers, and students in SSI lessons as…

  1. SUPERFUND GROUNDWATER ISSUE - FACILITATED TRANSPORT

    EPA Science Inventory

    The Regional Superfund Ground Water Forum is a group of ground-water scientists representing EPA's Regional Superfund Offices, organized to exchange up to date information related to ground-water remediation at Superfund sites. Facilitated transport is an issue identified by the ...

  2. ERCMExpress, Volume 2, Issue 5

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of ERCMExpress presents food safety and food defense for schools. Many schools and school districts across the country have established emergency management plans; however, these plans are often not comprehensive, practiced regularly or written in collaboration with the local community. It is recommended that schools adopt a…

  3. Issues in Coastal Zone Management.

    ERIC Educational Resources Information Center

    Davis, Derrin

    1992-01-01

    Addresses the following issues relevant to coastal zone management: overcrowding, resource exploitation, pollution, agriculture, fisheries, industrial, and other uses. Describes conflicts and trade-offs in management typified by fragmented agency decision making. Discusses implications of the greenhouse effect, sustainable development, and the…

  4. ERCMExpress. Volume 3, Issue 3

    ERIC Educational Resources Information Center

    Paine, Cathy

    2007-01-01

    The Emergency Response and Crisis Management (ERCM) Technical Assistance Center's newsletter, "ERCMExpress," provides comprehensive information on key issues in school emergency management. Memorials are deeply rooted in our culture and remind us of a person who has died or an event in which people died, and they provide a place for people to…

  5. Defamation Issues in Higher Education.

    ERIC Educational Resources Information Center

    Bazluke, Francine Tilewick

    This monograph reviews the law applying to defamation issues, cites various judicial decisions that affect colleges and universities, and offers guidance for minimizing the risk of defamation liability. It defines the two subclasses of defamatory statements: first, libel, which is a recorded or printed statement, and second, slander, which is…

  6. Social Issues Resources Series. Pollution.

    ERIC Educational Resources Information Center

    Goldstein, Eleanor C.

    The Social Issues Resources Series (described more fully in SO 003 775) was developed to: 1) Create a continuous flow of resources for the teacher and student with which to apply the methods of inquiry, problem-solving, and creative research; 2) provide resources of diverse scope and comprehensiveness; 3) encourage the study of contemporary issues…

  7. Coding Issues in Grounded Theory

    ERIC Educational Resources Information Center

    Moghaddam, Alireza

    2006-01-01

    This paper discusses grounded theory as one of the qualitative research designs. It describes how grounded theory generates from data. Three phases of grounded theory--open coding, axial coding, and selective coding--are discussed, along with some of the issues which are the source of debate among grounded theorists, especially between its…

  8. Canadian Environmental Issues in Perspective.

    ERIC Educational Resources Information Center

    Jaakson, Reiner, Ed.

    1984-01-01

    Traces Canada's conservation practices and environmental concerns from settlement to the present. The relationship between Canada and the United States on several issues is discussed. Acid rain, water resources, toxic substances, natural resource management, energy consciousness, environmental impact statements, and increased public awareness are…

  9. Psychology of Sport. Issues & Insights.

    ERIC Educational Resources Information Center

    Fisher, A. Craig, Ed.

    This book is designed to provide instructors and students in sport psychology courses with a learning instrument that combines the continuity of a textbook with the range of opinion, in-depth treatment of selected issues, and insight into research methods of a book of readings. The subject is divided into four topical categories. Under the heading…

  10. Catalyst. Issue 1, Spring 2008

    ERIC Educational Resources Information Center

    Hawkins, B. Denise, Ed.

    2008-01-01

    Catalyst, a quarterly newsletter from the Institute's Communications Office, contains news, information, and features about the programs and services of the National Institute for Literacy. This issue contains the following articles: (1) Spanish-Language Publication for Parents of Young Readers Among the Institute's New Titles; (2) Director's…

  11. Systemic Educational Policy. Education Issues.

    ERIC Educational Resources Information Center

    Clune, William H.

    Issues in systemic educational policy are discussed in this paper, with a focus on improving student achievement. First, the limitations of the current educational policy as a means to improve student achievement are described, and a conceptual framework for systemic educational policy is presented. The advantages and disadvantages of centralized…

  12. Policy issues in space analogues

    NASA Astrophysics Data System (ADS)

    Auger, Robin N.; Facktor, Debra D.

    Space mission planning is increasingly focusing on destinations beyond Earth orbit. Advancements in technology will inevitably be required to enable long-duration human spaceflight missions, and breakthroughs in the policy arena will also be needed to achieve success in such missions. By exploring how policy issues have been addressed in analogous extreme environments, policymakers can develop a framework for addressing these issues as they apply to long-term human spaceflight. Policy issues that need to be addressed include: crew selection, training, organization, and activities, medical testing, illness, injury, and death; communication; legal accountability and liability; mission safety and risk management; and environmental contamination. This paper outlines the approach of a study underway by The George Washington University and ANSER to examine how these policy issues have been addressed in several analogues and how the experiences of these analogues can help formulate policies for long-duration human spaceflight missions. Analogues being studied include Antarctic bases, submarine voyages, undersea stations, Biosphere 2, and the U.S. Skylab and Russian Mir space stations.

  13. Noise issues in Kanagawa Prefecture

    NASA Astrophysics Data System (ADS)

    Yokoshima, Shigenori; Tamura, Akihiro

    2001-05-01

    In Kanagawa Prefecture, bordering Tokyo Metropolis and the third most densely populated prefecture in Japan, various noises have caused serious problems in terms of living environment preservation and human health protection. This paper describes present states of noise issues in Kanagawa. Road traffic noise, remaining one of serious pollution issues, was monitored at a total 217 sites along trunk roads in Kanagawa from fiscal year 2000 to 2002. The percentage of the sites that achieve environmental quality standards for road traffic noise was approximately 20%. Noise caused by Tokaido Shinkansen trains, of which the total daily number is 287, also has negative impacts on inhabitants along the railway. As a result of the noise measurement from fiscal year 1994 to 2002, about 80% of the measurement sites exceeded environmental quality standards for Shinkansen railway noise during the years. In the areas surrounding the Atsugi Base, noise generated by training flights damagingly affects inhabitants' daily life. The number of complaints due to the noise was largest among noise issues. Moreover, neighborhood noises, noises emitted during the nighttime operation of bars, restaurants and shops, and noises produced by work in out-of-door yards have recently provoked social issues.

  14. ERCMExpress. Volume 3, Issue 5

    ERIC Educational Resources Information Center

    Taylor, Matt

    2007-01-01

    The Emergency Response and Crisis Management (ECRM) Technical Assistance Center's newsletter "ERCMExpress" provides comprehensive information on key issues in school emergency management. Many nontraditional schools across the United States, such as storefront schools, rural schools, and alternative education facilities, face challenges in…

  15. ERCMExpress. Volume 2, Issue 6

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of ERCMExpress presents "The National Incident Management System" (NIMS) is the United States' uniform system for managing domestic incidents and is suitable for schools to implement in the four phases of their crisis planning: (1) prevention-mitigation; (2) preparedness; (4) recovery. The NIMS is a comprehensive approach to crisis…

  16. ERCMExpress. Volume 2, Issue 4

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of ERCMExpress alerts readers of the All-Hazard NOAA weather radio (NWR) network upgrade. In 2004, The National Oceanic and Atmospheric Administration NOAA and the U.S. Department of Homeland Security (DHS) collaborated to enable DHS to disseminate homeland security-related information over the NWR network. DHS's goal was to produce an…

  17. Crucial Issues in Secondary Education

    ERIC Educational Resources Information Center

    Van Til, William

    1976-01-01

    Nine crucial issues in secondary education are identified: (1) self-actualization skills, (2) humane values, (3) social survival skills, (4) transfer of social heritage, (5) utilization of total environment, (6) program content, (7) organizational renewal, (8) optimum resource usage, (9) societal participation in educational improvement. (MB)

  18. Classroom Implementation. Issues in Assessment.

    ERIC Educational Resources Information Center

    Malinowski, Patricia A., Ed.

    This booklet, second in a series on issues in assessment, seeks to describe an initiative supported by Finger Lakes Community College (New York) to use classroom assessment techniques (CATs) in different academic areas and to present an overview of some assessment approaches that have been used in the classroom. Papers include: (1) "Enhancing…

  19. ERCMExpress. Volume 1, Issue 1

    ERIC Educational Resources Information Center

    US Department of Education, 2005

    2005-01-01

    This is the inaugural issue of the Emergency Response and Crisis Management (ERCM) Technical Assistance Center's "ERCMExpress," and it focuses on the new technical assistance center. The center will support 243 grantees funded under the Emergency Response and Crisis Management program in managing and implementing their projects, and in sustaining…

  20. ETS Research Spotlight: Issue 2

    ERIC Educational Resources Information Center

    Johnson, Jeff, Ed.

    2009-01-01

    In four articles adapted from the Educational Testing Service (ETS) Research Report Series, Issue 2 of ETS Research Spotlight provides a small taste of the range of assessment-related research capabilities of the ETS Research and Development Division. Those articles cover assessment-related research aimed at developing models of student learning,…

  1. Malaysian Serials: Issues and Problems.

    ERIC Educational Resources Information Center

    Bahri, Che Norma

    This paper analyzes the issues and problems while looking at the trends and developments of serials publishing in Malaysia. The first section provides background; topics addressed include the country and people of Malaysia, the history of serials publishing in Malaysia, categories and formats of serials publishing, academic publications,…

  2. The Issue of Mandatory Retirement

    ERIC Educational Resources Information Center

    Sheppard, Harold L.

    1978-01-01

    The emerging issue will center on costs to the total economy of early retirement for a growing population whose life expectancy is continuing to rise. Available from The American Academy of Political and Social Science, 3937 Chestnut St., Philadelphia, Pennsylvania 19104; $18.00 annually. (Author/IRT)

  3. Staff Selection and Certification Issues.

    ERIC Educational Resources Information Center

    Blee, Myron R.

    1983-01-01

    Considers issues and relationships involved in the development of a system under which each of Florida's community colleges could define criteria for the selection, evaluation, and retention of personnel. Underscores the value of missions statements for particular positions and the identification of functions and needed skills. Outlines steps in…

  4. Current issues in European migration.

    PubMed

    Straubhaar, T; Wolter, A

    1996-01-01

    The authors examine recent migration patterns into and within the European Union. Issues involving asylum and migration policy are discussed, and problems caused by differing naturalization practices in different countries are considered. Skill patterns of migrants and problems in labor markets are also investigated. PMID:12321414

  5. Vocational Education Today: Topical Issues.

    ERIC Educational Resources Information Center

    Kenway, Jane, Ed.; Tregenza, Karen, Ed.; Watkins, Peter, Ed.

    This book contains 13 papers examining topical issues in vocational education and training (VET) in Victoria, Australia. The following papers are included: "Vocational Education and Schooling: The Changing Scene" (Jane Kenway, Sue Willis, Peter Watkins, Karen Tregenza); "The Enterprise Approach" (James Mulraney); "VET Programs at James Harrison…

  6. A Higher Education Issues Study.

    ERIC Educational Resources Information Center

    Balm, Gerald J.; Blomberg, Robert

    1987-01-01

    As part of a strategic planning effort guiding community socioeconomic development through 2000, the citizens of Rochester, Minnesota, tackled the problem of providing equitable, accessible, and accountable higher education. Studying external factors and developing an internal situation analysis led to a set of higher education issues and…

  7. Adult Literacy Issues in Canada.

    ERIC Educational Resources Information Center

    Burnaby, Barbara

    1991-01-01

    Literacy issues are discussed that affect Canadians age 15 and older who are barely literate in any language. Topics include the following: definitions of literacy; policy overviews and surveys; the impact of literacy on Canadian institutions; access for literacy learners; adult learning and classroom practice; and the plain language movement. (76…

  8. Ethics Issues Snare School Leaders

    ERIC Educational Resources Information Center

    Borja, Rhea R.

    2005-01-01

    This article reports on ethics issues involving school leaders. Some superintendents have landed in murky ethical waters for their ties to for-profit companies, highlighting the temptations administrators face as industry and education increasingly intersect. Some questionable judgments by superintendents--from accepting company-paid trips to…

  9. Unresolved Issues of Cooperative Learning.

    ERIC Educational Resources Information Center

    Cook, Stuart W.

    Proposals to use interracial/cross-ethnic learning teams in desegregated classrooms raise issues from research that demonstrate the complicated nature of the relationship between learning teams and classroom interracial relations. According to the research, relationships are affected by the characteristics of learning teams, namely…

  10. Online Catalogs: Issues and Concerns.

    ERIC Educational Resources Information Center

    Bausser, Jaye

    This document explores the various issues and concerns related to the development of online systems in libraries and, in particular, online catalogs. Following a preface, foreword, and introduction, chapters are devoted to each of the following topics: (l) providing for special interests including the disabled; (2) authority control; (3) subject…

  11. Telematics Simulation: Recent Developments & Issues.

    ERIC Educational Resources Information Center

    Sutherland, Janet; Ekker, Knut; Morgan, Konrad; Crookall, David; Carbonell, Amparo Garcia

    Recent developments in Internet technologies have enabled new, more flexible forms of telematic simulation and have raised issues that were not considered in the early days of networked learning. Ultimately, these questions revolve around: (1) the learning cost-effectiveness of telematic simulation (quality and quantity of learning as opposed to…

  12. Addressing Transgender Issues in Schools

    ERIC Educational Resources Information Center

    Cavanagh, Marian

    2016-01-01

    As mainstream media focus more attention on transgender issues, and as anti-discrimination laws evolve, a shift is taking place on campuses. Many schools now include gender identity and expression in their inclusivity work and seek to establish policies and procedures to support transgender students and their families. It's not an easy task. In…

  13. Information Technology Issues. Transition Series.

    ERIC Educational Resources Information Center

    Comptroller General of the U.S., Washington, DC.

    Addressed to the new administration and the Congress, this summary report on Federal Government information management and technology issues begins by describing the environment in which information technology has been managed. Arguing that effective government depends directly on effective automation to support programs and initiatives, the…

  14. ERCMExpress. Volume 2, Issue 8

    ERIC Educational Resources Information Center

    US Department of Education, 2006

    2006-01-01

    This issue of ERCMExpress provides direction to schools and school districts in "Creating Emergency Management Plans." To ensure the safety of students, faculty and staff, schools and school districts nationwide should create comprehensive, multi-hazard emergency management plans that focus on the four phases of emergency management--…

  15. Educational Dimensions, Issue Five--1985.

    ERIC Educational Resources Information Center

    Green, Judith, Ed.; And Others

    Designed as a forum for issues pertinent to education at the two-year college level, this journal contains articles and dissertation abstracts by professionals at community colleges in New York. The articles are: (1) "Imagery, Visualizations, and Music: Implications for Learning Using the Right Hemisphere," by Shirley Aaronson; (2) "The Impact of…

  16. Debating Real-World Issues.

    ERIC Educational Resources Information Center

    Koenig, Maureen

    2001-01-01

    Presents three different scientific issues to students and uses debate as a way of gaining information. Involves information collection on the topic, team preparation, and debate between teams. Includes debate format and presentation guidelines, suggestions for debate questions, information on areas to explore when preparing to debate the question…

  17. Professional Issues for Primary Teachers

    ERIC Educational Resources Information Center

    Browne, Ann, Ed.; Haylock, Derek, Ed.

    2004-01-01

    This book is intended to be a contribution to raising the awareness of primary teachers and trainee teachers as to what is involved in all the different professional dimensions of their work in schools. The book deals with the key professional issues in primary teaching that are addressed in primary teacher training courses. The book aims to…

  18. Political Issues in Gifted Education

    ERIC Educational Resources Information Center

    Gallagher, James J.

    2015-01-01

    In this article, James J. Gallagher proposes that understanding the political issues and the debate surrounding the education of gifted students is based on the recognition that education policy (including rules, regulations, financial allocations, etc.) reflects social policy. Hence, society prioritizes needs so that the most important of these…

  19. Sexual Harassment: A Hidden Issue.

    ERIC Educational Resources Information Center

    Association of American Colleges, Washington, DC. Project on the Status and Education of Women.

    A discussion of sexual harassment on college and university campuses addresses a number of questions and issues: myths of sexual harassment; what is sexual harassment, how widespread is it, and why are women reluctant to talk about it?; sexual harassment and the law; is harassment a violation of Title VII of the Civil Rights Act (for employees) or…

  20. Death Outlook and Social Issues.

    ERIC Educational Resources Information Center

    Feifel, Herman; Schag, Daniel

    1980-01-01

    Examined the hypothesis that there is a relationship between outlook on death and orientation toward mercy killing, abortion, suicide, and euthanasia. Some relationships between death attitudes and perspectives on the social issues emphasized the need to consider specific circumstances as well as abstract concepts. (Author)

  1. Catalyst. Issue 2, Fall 2008

    ERIC Educational Resources Information Center

    Hawkins, B. Denise, Ed.

    2008-01-01

    Catalyst, a quarterly newsletter from the Institute's Communications Office, contains news, information, and features about the programs and services of the National Institute for Literacy. Contents of this issue include: (1) Shanahan on the National Early Literacy Panel Report: What's in Store; (2) Director's Message; (3) Representative Fattah to…

  2. Good Health Is a Global Issue

    MedlinePlus

    ... Past Issues Special Section Good Health Is a Global Issue Past Issues / Spring 2008 Table of Contents ... reasons, many of the research efforts related to global health must now deal with these non-communicable ...

  3. Using Online Databases in Corporate Issues Management.

    ERIC Educational Resources Information Center

    Thomsen, Steven R.

    1995-01-01

    Finds that corporate public relations practitioners felt they were able, using online database and information services, to intercept issues earlier in the "issue cycle" and thus enable their organizations to develop more "proactionary" or "catalytic" issues management repose strategies. (SR)

  4. Spectroscopic confirmation of DES12S2a

    NASA Astrophysics Data System (ADS)

    Brown, P. J.; Krisciunas, K.; Marshall, J.; Suntzeff, N.; Ahn, E.; Finley, D.; Frieman, J.; Marriner, J.; Wester, W.; Aldering, G.; Bloom, J. S.; Kim, A.; Nugent, P.; Perlmutter, S.; Thomas, R. C.; Desai, S.; Paech, K.; Smith, R. C.; Kessler, R.; Covarrubias, R. A.; Cane, R.; Fischer, J. A.; Gilhool, S.; Gladney, L.; Gupta, R.; Mosher, J.; Sako, M.; Campbell, H.; D'Andrea, C.; Nichol, R.; Papadopoulos, A.; Sullivan, M.; March, M.; Smith, M.; Barbary, K.; Bernstein, J. P.; Biswas, R.; Kovacs, E.; Kuhlmann, S.; Spinka, H.

    2013-02-01

    We report optical spectroscopy of a supernova (SN) candidate discovered by the Dark Energy Supernova Survey (ATel #4668). The spectrum (450-1000 nm) of DES12S2a was obtained with the 9.2-m Hobby-Eberly Telescope (+Marcario Low-Resolution Spectrograph) by J. Caldwell. The spectrum shows a blue continuum with a narrow H-alpha emission feature atop a broader component indicative of a type IIn SN. The phase at the date of the spectrum given below is based on the DES light curves.

  5. Comparison des donnees simulees des capteurs de SPOT et landsat-D: Application a une region agricole

    NASA Astrophysics Data System (ADS)

    Saint, Gilbert; Podaire, Alain

    La modélisation de la luminance spectrale des objets observés en télédétection permet d'effectuer des simulations de différents capteurs à partir de données obtenues au moyen d'un scanneur DAEDALUS aéroporté : les qualités radiométrique et géométrique ont pu être évaluées par une comparaison avec des données Landsat réelles. L'analyse sur une zone agricole met surtout en évidence le rôle important de l'accroissement de la résolution.

  6. Analyse des facteurs prédictifs de malignité des goitres nodulaires : à propos de 500 cas

    PubMed Central

    Bouaity, Brahim; Darouassi, Youssef; Chihani, Mehdi; Touati, Mohamed Mliha; Ammar, Haddou

    2016-01-01

    Les nodules thyroïdiens sont très fréquents et moins de 10% d'entre eux sont malin. Ils posent un véritable problème diagnostique et thérapeutique surtout par rapport à leur nature bénigne ou maligne. L’étude de certains facteurs cliniques et paracliniques de présomption de malignité permet de bien codifier la stratégie thérapeutique. Le but de ce travail est d’étudier les facteurs prédictifs de malignité des goitres nodulaires et comparer nos résultats à ceux de la littérature. Il s'agit d'une étude rétrospective à propos de 500 cas de goitres nodulaires opérés au service d'Oto-rhino-laryngologie (ORL) et Chirurgie cervico-faciale (CCF) de l'hôpital militaire Avicenne de Marrakech entre 2006 et 2012. Le pourcentage de cancers a été de 6,8%. L’âge moyen de nos patients était de 46 ans, avec une sex-ratio de 5 (F/H). A la palpation cervicale; le caractère dure du nodule a été constaté dans 94,4% des cas de cancer, avec des limites irrégulières dans 64,70% des cas de cancer. Trois nodules étaient fixes et ils étaient tous malins. Les adénopathies cervicales ont été constatées chez 8 malades dont 7 présentaient des cancers. A l’échographie, 61,8% des nodules malins présentaient un aspect hypoéchogène, avec des contours flous dans 88,24% des cas. La vascularisation intra nodulaire était présente dans 35,3% de ces cas des cancers avec des microcalcifications chez 55,9% d'entre eux. Le halo hypoéchogene périnodulaire était incomplet dans 73,5% des cas de cancer. Nos patients étaient en euthyroïdie dans 84,6% des cas. Les facteurs prédictifs de malignité d'un goitre nodulaire, étaient donc dans notre étude d'abord cliniques: l’âge supérieur à 60 ans, la consistance dure du nodule, sa fixité, son caractère irrégulier et mal limité à la palpation, ainsi que la présence d'adénopathie(s) cervicale(s) à l'examen; et échographiques: le caractère hypoéchogène, les limites floues, la présence de

  7. Issues in recycling galvanized scrap

    SciTech Connect

    Koros, P.J.; Hellickson, D.A.; Dudek, F.J.

    1995-02-10

    The quality of the steel used for most galvanizing (and tinplate) applications makes scrap derived from their production and use a premier solid charge material for steelmaking. In 1989 the AISI created a Task Force to define the issues and to recommend technologically and economically sound approaches to assure continued, unhindered recyclability of the growing volume of galvanized scrap. The AISI program addressed the treatment of full-sized industrial bales of scrap. The current, on-going MRI (US)--Argonne National Laboratory program is focused on ``loose`` scrap from industrial and post-consumer sources. Results from these programs, issues of scrap management from source to steel melting, the choices for handling zinc in iron and steelmaking and the benefits/costs for removal of zinc (and lead) from scrap prior to melting in BOF and foundry operations are reviewed in this paper.

  8. Ethical issues in organ transplantation.

    PubMed

    Freeman, Richard B; Bernat, James L

    2012-01-01

    We discuss ethical issues of organ transplantation including the stewardship tension between physicians' duty to do everything possible for their patients and their duty to serve society by encouraging organ donation. We emphasize consideration of the role of the principles of justice, utility and equity in the just distribution of transplantable organ as scarce resources. We then consider ethical issues of determining death of the organ donor including the remaining controversies in brain death determination and the new controversies raised by circulatory death determination. We need uniformity in standards of death determination, agreement on the duration of asystole before death is declared, and consensus on the allowable circulatory interventions on the newly declared organ donor that are intended to improve organ function. We discuss the importance of maintaining the dead donor rule, despite the argument of some scholars to abandon it. PMID:23217432

  9. Design Issues in Transgender Studies

    PubMed Central

    Emel, Lynda; Hanscom, Brett; Zangeneh, Sahar

    2016-01-01

    Abstract: Transgender individuals constitute an important focus for HIV prevention, but studies in this population present some unique methodologic and operational challenges. We consider issues related to sampling, sample size, number of sites, and trial cost. We discuss relevant design issues for evaluating interventions in both HIV-negative and HIV-infected transgender populations, as well as a method for assessing the impact of an intervention on population HIV incidence. We find that HIV-endpoint studies of transgender individuals will likely require fewer participants but more sites and have higher operational costs than HIV prevention trials in other populations. Because any intervention targeted to transgender individuals will likely include antiretroviral drugs, small scale studies looking at potential interactions between antiretroviral therapy and hormone therapy are recommended. Finally, assessing the impact of an intervention targeted to transgender individuals will require better information on the contribution of such individuals to the population HIV incidence. PMID:27429191

  10. Design Issues in Transgender Studies.

    PubMed

    Hughes, James P; Emel, Lynda; Hanscom, Brett; Zangeneh, Sahar

    2016-08-15

    Transgender individuals constitute an important focus for HIV prevention, but studies in this population present some unique methodologic and operational challenges. We consider issues related to sampling, sample size, number of sites, and trial cost. We discuss relevant design issues for evaluating interventions in both HIV-negative and HIV-infected transgender populations, as well as a method for assessing the impact of an intervention on population HIV incidence. We find that HIV-endpoint studies of transgender individuals will likely require fewer participants but more sites and have higher operational costs than HIV prevention trials in other populations. Because any intervention targeted to transgender individuals will likely include antiretroviral drugs, small scale studies looking at potential interactions between antiretroviral therapy and hormone therapy are recommended. Finally, assessing the impact of an intervention targeted to transgender individuals will require better information on the contribution of such individuals to the population HIV incidence. PMID:27429191

  11. Environmental issues affecting CCT development

    SciTech Connect

    Reidy, M.

    1997-12-31

    While no final legislative schedule has been set for the new Congress, two issues with strong environmental ramifications which are likely to affect the coal industry seem to top the list of closely watched debates in Washington -- the Environmental Protection Agency`s proposed new ozone and particulate matter standards and utility restructuring. The paper discusses the background of the proposed standards, public comment, the Congressional review of regulations, other legislative options, and utility restructuring.

  12. Nuclear economics: Issues and facts

    SciTech Connect

    Hudson, C.R.

    1993-12-31

    Nuclear economics has become on the more prominent topics related to nuclear power. Beyond the subjects of nuclear safety and waste disposal, questions and concerns of nuclear power economics have emerged with growing frequency in utility board rooms, in state and federal regulatory proceedings, and in the media. What has caused nuclear power economics to become such a popular topic? This paper addresses issues and facts related to historical nuclear plant costs, new nuclear plant projections, and warning signals for future plants.

  13. Legal issues in child maltreatment.

    PubMed

    Narang, Sandeep K; Melville, John D

    2014-10-01

    The most common medicolegal issues include reporting child maltreatment, the presentation of ethical and effective expert testimony, informed consent in child maltreatment cases, and various liability risks related to child maltreatment cases. The health care professional who remains knowledgeable about the laws within their jurisdiction, the mandates of their professional society and state medical board, and the local resources (eg, child abuse pediatrician and hospital counsel) available to them minimizes medicolegal risk. PMID:25242715

  14. Surrogacy: ethical and legal issues.

    PubMed

    Saxena, Pikee; Mishra, Archana; Malik, Sonia

    2012-10-01

    Surrogacy refers to a contract in which a woman carries a pregnancy "for" another couple. Number of infertile couples from all over the World approach India where commercial surrogacy is legal. Although this arrangement appears to be beneficial for all parties concerned,there are certain delicate issues which need to be addressed through carefully framed laws in order to protect the rights of the surrogate mother and the intended parents. PMID:23293432

  15. Accelerator Availability and Reliability Issues

    SciTech Connect

    Steve Suhring

    2003-05-01

    Maintaining reliable machine operations for existing machines as well as planning for future machines' operability present significant challenges to those responsible for system performance and improvement. Changes to machine requirements and beam specifications often reduce overall machine availability in an effort to meet user needs. Accelerator reliability issues from around the world will be presented, followed by a discussion of the major factors influencing machine availability.

  16. Policy issues in interconnecting networks

    NASA Technical Reports Server (NTRS)

    Leiner, Barry M.

    1989-01-01

    To support the activities of the Federal Research Coordinating Committee (FRICC) in creating an interconnected set of networks to serve the research community, two workshops were held to address the technical support of policy issues that arise when interconnecting such networks. The workshops addressed the required and feasible technologies and architectures that could be used to satisfy the desired policies for interconnection. The results of the workshop are documented.

  17. [DEONTOLOGICAL ISSUES IN RAILWAY HYGIENE].

    PubMed

    Kaptsov, V A

    2015-01-01

    There are presented the main ethical and deontological problems encountered in practice and research activities of the hygienist in transport. There is shown the importance of strict compliance with hygienic standards, disregard for the principle of "technical attainability", the necessity of continuous training, improvement of skills of sanitary-educational activity and readiness to solve emerging ethical issues in connection with the development of scientific and technical progress. PMID:26302557

  18. Surrogacy: Ethical and Legal Issues

    PubMed Central

    Saxena, Pikee; Mishra, Archana; Malik, Sonia

    2012-01-01

    Surrogacy refers to a contract in which a woman carries a pregnancy “for” another couple. Number of infertile couples from all over the World approach India where commercial surrogacy is legal. Although this arrangement appears to be beneficial for all parties concerned,there are certain delicate issues which need to be addressed through carefully framed laws in order to protect the rights of the surrogate mother and the intended parents. PMID:23293432

  19. Transport de paires EPR dans des structures mesoscopiques

    NASA Astrophysics Data System (ADS)

    Dupont, Emilie

    Dans cette these, nous nous sommes particulierement interesses a la propagation de paires EPR1 delocalisees et localisees, et a l'influence d'un supraconducteur sur le transport de ces paires. Apres une introduction de cette etude, ainsi que du cadre scientifique qu'est l'informatique quantique dans lequel elle s'inscrit, nous allons dans le chapitre 1 faire un rappel sur le systeme constitue de deux points quantiques normaux entoures de deux fils supraconducteurs. Cela nous permettra d'introduire une methode de calcul qui sera reutilisee par la suite, et de trouver egalement le courant Josephson produit par ce systeme transforme en SQUID-dc par l'ajout d'une jonction auxiliaire. Le SQUID permet de mesurer l'etat de spin (singulet ou triplet), et peut etre forme a partir d'autres systemes que nous etudierons ensuite. Dans le chapitre 2, nous rappellerons l'etude detaillee d'un intricateur d'Andreev faite par un groupe de Bale. La matrice T, permettant d'obtenir le courant dans les cas ou les electrons sont separes spatialement ou non, sera etudiee en detail afin d'en faire usage au chapitre suivant. Le chapitre 3 est consacre a l'etude de l'influence du bruit sur le fonctionnement de l'intricateur d'Andreev. Ce bruit modifie la forme du courant jusqu'a aboutir a d'autres conditions de fonctionnement de l'intricateur. En effet, le bruit present sur les points quantiques peut perturber le transport des paires EPR par l'intermediaire des degres de liberte. Nous montrerons que, du fait de l'"intrication" entre la charge de la paire et le bruit, la paire est detruite pour des temps longs. Cependant, le resultat le plus important sera que le bruit perturbe plus le transport des paires delocalisees, qui implique une resonance de Breit-Wigner a deux particules. Le transport parasite n'implique pour sa part qu'une resonance de Breit-Wigner a une particule. Dans le chapitre 4, nous reviendrons au systeme constitue de deux points quantiques entoures de deux fils

  20. Symetries et integrabilite des equations aux differences finies

    NASA Astrophysics Data System (ADS)

    Lafortune, Stephane

    2000-09-01

    La présente thèse porte sur l'étude des symétries et des propriétés d'intégrabilité des équations aux différences finies. Dans le chapitre 1, le groupe de symétrie ponctuelle d'un système couplé à deux équations différentielles aux différences est étudié. On montre que dans certains cas, la dimension du groupe peut être infinie. Les équations peuvent décrire l'interaction de deux longues chaînes moléculaires, chacune étant composée d'atomes d'un même type. Dans le chapitre 2, une classe de théories de champs avec interaction exponentielle est introduite. L'interaction dépend de deux matrices de ``couplage'' et est suffisamment générale pour inclure toutes les théories de champs de Toda existant dans la littérature. Les symétries de Lie ponctuelles sont obtenues pour les cas où l'on a un nombre fini, infini ou semi-infini de champs. Une attention spéciale est accordée à la présence de l'invariance conforme. Dans le chapitre 3, nous procédons à la classification et à l'étude d'équations linéarisables. Nous examinons tout d'abord l'équation de Gambier continue qui contient, comme réductions, toutes les équations de deuxième ordre intégrables par linéarisation. Nous introduisons par la suite la forme discrète de cette équation et obtenons les conditions d'intégrabilité à l'aide du confinement des singularités. Nous étudions aussi les différentes réductions du cas discret. De plus, nous obtenons des transformations de Schlesinger pour les équations de Gambier discrète et continue. Dans la dernière partie du chapitre, nous étudions une famille d'équations discrètes du deuxième ordre incluant des équations résolubles par linéarisation. Plusieurs cas intégrables sont obtenus. Dans le cas discret, l'étude de l'intégrabilité est faite à l'aide du confinement des singularités. Dans le chapitre 4, nous étudions un autre critère d'intégrabilité: l'entropie algébrique. Nous montrons que les r

  1. Open Issues in Evolutionary Robotics.

    PubMed

    Silva, Fernando; Duarte, Miguel; Correia, Luís; Oliveira, Sancho Moura; Christensen, Anders Lyhne

    2016-01-01

    One of the long-term goals in evolutionary robotics is to be able to automatically synthesize controllers for real autonomous robots based only on a task specification. While a number of studies have shown the applicability of evolutionary robotics techniques for the synthesis of behavioral control, researchers have consistently been faced with a number of issues preventing the widespread adoption of evolutionary robotics for engineering purposes. In this article, we review and discuss the open issues in evolutionary robotics. First, we analyze the benefits and challenges of simulation-based evolution and subsequent deployment of controllers versus evolution on real robotic hardware. Second, we discuss specific evolutionary computation issues that have plagued evolutionary robotics: (1) the bootstrap problem, (2) deception, and (3) the role of genomic encoding and genotype-phenotype mapping in the evolution of controllers for complex tasks. Finally, we address the absence of standard research practices in the field. We also discuss promising avenues of research. Our underlying motivation is the reduction of the current gap between evolutionary robotics and mainstream robotics, and the establishment of evolutionary robotics as a canonical approach for the engineering of autonomous robots. PMID:26581015

  2. Women offenders and reentry issues.

    PubMed

    Taylor, S D

    1996-01-01

    Women parallel men in their profile of physical disease, psychosocial configuration, addictive patterns, and criminal deviance. For women offenders in particular, the prison environment reinforces a victim role that originated in childhood and adolescence. In addition, such settings discourage both emotional expression (except for aggression) and responsibility, since basic needs such as food, lodging, and clothing are provided. Incarcerated women have significant treatment issues, including the lack of social and vocational role definition, psychological dependence and psychic craving, poorly developed social skills, and conflicts in social, family, and intimate relationships. This article describes the unique psychoeducational and skills-training needs of women offenders as they adjust to community living, and outlines specific treatment interventions that have proven to effect successful patient outcomes. Case studies are used to illustrate the reentry experiences of three women offenders with distinct backgrounds. One example illustrates how a woman who had been involved in the criminal justice system for 24 years overcame her addiction and self-confidence issues. A second case study profiles an offender with three children who had experienced sexual trauma during her childhood and adult years. A third case reports on an African-American woman whose crack-cocaine addiction resulted in the birth of a drug-exposed son. The treatment model tested in all three cases emphasized the practical and often overlooked treatment issues of incarcerated women. PMID:8714337

  3. Special issue on transient plasmas

    NASA Astrophysics Data System (ADS)

    Bailey, James; Hoarty, David; Mancini, Roberto; Yoneda, Hitoki

    2015-11-01

    This special issue of Journal of Physics B: Atomic, Molecular and Optical Physics is dedicated to the "spectroscopy of transient plasmas" covering plasma conditions produced by a range of pulsed laboratory sources including short and long pulse lasers, pulsed power devices, and free electron lasers (FELs). The full range of plasma spectroscopy up to high energy bremsstrahlung radiation, including line broadening analysis for application to data recorded with the ChemCam instrument on the Mars Science Laboratory rover Curiosity, is covered. This issue is timely as advances in optical lasers and x-ray FELs (XFEL) are enabling transient plasma to be probed at higher energies and shorter durations than ever before. New XFEL facilities being commissioned in Europe and Asia are adding to those operating in the US and Japan and the ELI high power laser project in Europe, due to open this year, will provide short pulse lasers of unprecedented power. This special issue represents a snapshot of the theoretical and experimental research in dense plasmas, electron kinetics, laser-induced breakdown spectroscopy of low temperature plasmas, inertial confinement fusion and non-equilibrium atomic physics using spectroscopy to diagnose plasmas produced by optical lasers, XFELs and pulsed-power machines.

  4. Ethical issues in family law.

    PubMed

    Zaidel, S

    1993-01-01

    This article focuses on a few key ethical issues which arise in the context of family law. One of the issues faces mental health practitioners who are often engaged as expert witnesses in family law disputes. In another realm, family law attorneys face several fundamental ethical dilemmas in the course of their work. The client's right to appropriate treatment will be considered in the light of multidisciplinary services. On a broader level, the courts need to examine the ethical implications of the commonly used guideline in judicial process, 'the best interests of the child'. When these ethical issues are considered, it becomes clear what changes need to be made in individual practice, professional standards and social policy. The underlying premise is based on the knowledge we have gained in recent years through research and clinical experience with divorcing families. It is suggested that a radically different approach to society's handling of divorce is needed. Denmark's administrative handling of these problems is presented as a working alternative model. PMID:8231692

  5. Opération multimode transverse des OPOs: des structures classiques aux corrélations quantiques

    NASA Astrophysics Data System (ADS)

    Martinelli, M.; Ducci, S.; Gigan, S.; Treps, N.; Maître, A.; Fabre, C.

    2002-06-01

    Nous démontrons la formation de structures transverses sur les faisceaux émis par un oscillateur paramétrique optique (OPO) de type II en configuration confocale. D'un point de vue classique nous mettons en évidence le caractère multimode transverse de telles structures. A travers l'étude des corrélations spatiales des faisceaux générés nous montrons que ces structures sont également multimodes d'un point de vue quantique.

  6. Apport des moyens endoscopiques dans la dilatation des sténoses caustiques de l’œsophage

    PubMed Central

    Seydou, Togo; Abdoulaye, Ouattara Moussa; xing, Li; Zi, Sanogo Zimogo; sekou, Koumaré; Wen, Yang Shang; Ibrahim, Sankare; Sekou, Toure Cheik Ahmed; Boubacar, Maiga Ibrahim; Saye, Jacque; Jerome, Dakouo Dodino; Dantoumé, Toure Ousmane; Sadio, Yena

    2016-01-01

    Introduction Toutes les sténoses symptomatiques de l’œsophage peuvent être dilatées par voie endoscopique. Nous évaluons l'apport des moyens endoscopiques dans la prise en charge de la dilatation œsophagienne pour sténose caustique de l’œsophage (SCO) au Mali. Méthodes IL s'agissait d'une étude descriptive et prospective réalisée dans le service de chirurgie thoracique à l'hôpital du Mali. Au total 46 dossiers cliniques de patients on été enregistrés et subdivisés en 4 groupes en fonction de la topographie des lésions cicatricielles. Le nombre de cas d'assistance endoscopique réalisé a été déterminé afin de comprendre l'apport des moyens endoscopiques dans le succès de la dilatation des SCO. Pour les 2 différentes méthodes de dilatation utilisées, le résultat du traitement et le coût ont comparés. Résultats La FOGD a été utilisée dans 19 cas (41.30%) de dilatation avec la bougie de Savary Guillard et dans 47.82% des cas dans la dilatation de Lerut. La vidéo-laryngoscopie a été utilisé 58.69% des cas de dilatation à la bougie de Lerut. Le passage de guide métallique et / ou de fil-guide a été réalisée dans 39.13% avec la vidéo laryngoscopie et dans 58.68% avec la FOGD. Dans la comparaison des deux méthodes, il existe une différence significative dans la survenue des complications (p=0.04075), l'anesthésie générale (p=0.02287), l'accessibilité à la méthode (p=0.04805) et la mortalité (p=0.00402). Conclusion La SCO est une pathologie grave et sous évaluée au Mali. Les moyens endoscopiques contribuent considérablement au succès de la dilatation œsophagienne pour sténose caustique dans les différentes méthodes utilisées. PMID:27200129

  7. Régimes transitoires des photopiles: durée de vie des porteurs et vitesse de recombinaison

    NASA Astrophysics Data System (ADS)

    Mialhe, P.; Sissoko, G.; Pelanchon, F.; Salagnon, J. M.

    1992-12-01

    A detailed analysis of a new experimental practice of the open circuit voltage decay method and of the short circuit current decay method for determining the base minority carrier lifetime and the back surface recombination velocity in solar cells has been performed. The measurements have been made by using the monitoring of a single transient of an operating cell at any level of injection; no power supply is required and a constant illumination level imposes the carrier injection level for normal operating conditions. The theory considers the complete continuity equation including generation and recombination rates of carriers. Precision and sensitivity of the method have been compared. The necessity of a precise knowledge of cell structural parameters have been shown to impose a limitation of the practical use of short-circuit current decay method, to low illumination levels. Cette étude développe une nouvelle méthode expérimentale pour mesurer la durée de vie des porteurs minoritaires dans la base d'une photopile ainsi que la vitesse de recombinaison à son interface arrière. Au cours de la mesure, la photopile est maintenue sous un éclairement constant qui impose le niveau d'injection souhaité. Cette méthode permet d'éliminer les effets néfastes à la mesure, provenant des impédances, propres au composant. Un régime transitoire, provoqué par une variation d'impédance, est étudié au cours de fonctionnements dans des conditions de court-circuit ou de circuit ouvert. L'étude théorique souligne la prise en compte de l'ensemble des phénomènes de recombinaison. L'obtention d'une bonne précision des mesures nécessite, avec une expérimentation rigoureuse, une connaissance précise des paramètres de structure de la photopile étudié. Pour la mesure de la durée de vie des porteurs, la plus grande sensibilité de la méthode en régime transitoire de court-circuit, comparée au régime de circuit ouvert, impose des mesures sous faible

  8. Top-Ten IT Issues, 2010

    ERIC Educational Resources Information Center

    Ingerman, Bret L.; Yang, Catherine

    2010-01-01

    The eleventh annual EDUCAUSE Current Issues Survey shows some very familiar themes among the top-ten IT issues of strategic importance to technology leaders in higher education. Indeed, all ten of the issues from the 2009 survey are back, albeit in a slightly different order. In addition, Strategic Planning returns as an issue of renewed…

  9. Copyright, the Internet, and Other Legal Issues.

    ERIC Educational Resources Information Center

    Gasaway, Laura N.

    1998-01-01

    Copyright and other intellectual property issues have dominated discussions of legal issues surrounding the Internet. There are other issues of considerable importance that also attract attention. Five legal issues affecting the Internet are addressed: copyright, online service-provider liability, database protection, obscenity, and privacy. Cited…

  10. 5 CFR 511.607 - Nonappealable issues.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Nonappealable issues. 511.607 Section 511... UNDER THE GENERAL SCHEDULE Classification Appeals § 511.607 Nonappealable issues. (a) The following issues are not appealable to the Office under this subpart. Such issues may be reviewed...

  11. 20 CFR 410.646 - Consolidated issues.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Consolidated issues. 410.646 Section 410.646..., Finality of Decisions, and Representation of Parties § 410.646 Consolidated issues. When one or more additional issues are raised by the Administrative Law Judge pursuant to § 410.637, such issues may, in...

  12. Simulations of the OzDES AGN reverberation mapping project

    NASA Astrophysics Data System (ADS)

    King, Anthea L.; Martini, Paul; Davis, Tamara M.; Denney, K. D.; Kochanek, C. S.; Peterson, Bradley M.; Skielboe, Andreas; Vestergaard, Marianne; Huff, Eric; Watson, Darach; Banerji, Manda; McMahon, Richard; Sharp, Rob; Lidman, C.

    2015-10-01

    As part of the Australian spectroscopic dark energy survey (OzDES) we are carrying out a large-scale reverberation mapping study of ≥500 quasars over five years in the 30 deg2 area of the Dark Energy Survey (DES) supernova fields. These quasars have redshifts ranging up to 4 and have apparent AB magnitudes between 16.8 mag < r < 22.5 mag. The aim of the survey is to measure time lags between fluctuations in the quasar continuum and broad emission-line fluxes of individual objects in order to measure black hole masses for a broad range of active galactic nuclei (AGN) and constrain the radius-luminosity (R-L) relationship. Here we investigate the expected efficiency of the OzDES reverberation mapping campaign and its possible extensions. We expect to recover lags for ˜35-45 per cent of the quasars. AGN with shorter lags and greater variability are more likely to yield a lag measurement, and objects with lags ≲6 months or ˜1 yr are expected to be recovered the most accurately. The baseline OzDES reverberation mapping campaign is predicted to produce an unbiased measurement of the R-L relationship parameters for H β, Mg II λ2798, and C IV λ1549. Extending the baseline survey by either increasing the spectroscopic cadence, extending the survey season, or improving the emission-line flux measurement accuracy will significantly improve the R-L parameter constraints for all broad emission lines.

  13. The Des Moines Plan: A Plan for Student Success.

    ERIC Educational Resources Information Center

    Castelda, Sharon; Wagner, Mary

    The Des Moines Plan (DMP) is described, which is a comprehensive kindergarten through grade 12 program designed to improve and strengthen students' reading, writing, and mathematics skills. The program was implemented during the fall semester of the 1986-87 school year. The DMP adopted the instructional model implemented by the Chapter 1 program…

  14. Die Gasultrazentrifuge als mediale Projektion des Kalten Krieges

    NASA Astrophysics Data System (ADS)

    Helmbold, Bernd

    Studien der letzten Dekaden nach der Wiedervereinigung von BRD und DDR erweitern die Perspektive der Wissenschaftsgeschichte vom Fokus des Big Science und der technisch-militärisch-industriellen Auseinandersetzung zwischen den zwei Blöcken zu einer globalen Transformation im Konflikt der Supermächte geprägt durch lokale und auch interne Ausformungen.

  15. Mechanistic Enzymology of the Radical SAM Enzyme DesII

    PubMed Central

    2016-01-01

    DesII is a member of the radical SAM family of enzymes that catalyzes radical-mediated transformations of TDP-4-amino-4,6-didexoy-D-glucose as well as other sugar nucleotide diphosphates. Like nearly all radical SAM enzymes, the reactions begin with the reductive homolysis of SAM to produce a 5′-deoxyadenosyl radical which is followed by regiospecific hydrogen atom abstraction from the substrate. What happens next, however, depends on the nature of the substrate radical so produced. In the case of the biosynthetically relevant substrate, a radical-mediated deamination ensues; however, when this amino group is replaced with a hydroxyl, one instead observes dehydrogenation. The factors that govern the fate of the initially generated substrate radical as well as the mechanistic details underlying these transformations have been a key focus of research into the chemistry of DesII. This review will discuss recent discoveries pertaining to the enzymology of DesII, how it may relate to understanding other radical-mediated lyases and dehydrogenases and the working hypotheses currently being investigated regarding the mechanism of DesII catalysis.

  16. Simulations of the OzDES AGN reverberation mapping project

    SciTech Connect

    King, Anthea L.; Martini, Paul; Davis, Tamara M.; Denney, K. D.; Kochanek, C. S.; Peterson, Bradley M.; Skielboe, Andreas; Vestergaard, Marianne; Huff, Eric; Watson, Darach; Banerji, Manda; McMahon, Richard; Sharp, Rob; Lidman, C.

    2015-08-26

    As part of the Australian spectroscopic dark energy survey (OzDES) we are carrying out a large-scale reverberation mapping study of ~500 quasars over five years in the 30 deg2 area of the Dark Energy Survey (DES) supernova fields. These quasars have redshifts ranging up to 4 and have apparent AB magnitudes between 16.8 mag < r < 22.5 mag. The aim of the survey is to measure time lags between fluctuations in the quasar continuum and broad emission-line fluxes of individual objects in order to measure black hole masses for a broad range of active galactic nuclei (AGN) and constrain the radius–luminosity (R–L) relationship. Here we investigate the expected efficiency of the OzDES reverberation mapping campaign and its possible extensions. We expect to recover lags for ~35–45 % of the quasars. AGN with shorter lags and greater variability are more likely to yield a lag measurement, and objects with lags ≲6 months or ~1 yr are expected to be recovered the most accurately. The baseline OzDES reverberation mapping campaign is predicted to produce an unbiased measurement of the R–L relationship parameters for Hβ, MgIIλ2798, and C IVλ1549. As a result, extending the baseline survey by either increasing the spectroscopic cadence, extending the survey season, or improving the emission-line flux measurement accuracy will significantly improve the R–L parameter constraints for all broad emission lines.

  17. 75 FR 63714 - Drawbridge Operation Regulation; Des Allemands Bayou, LA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-18

    ... Burlington Northern Santa Fe Railway swing bridge across Des Allemands Bayou, mile 14.0, in St. Charles and Lafourche Parishes, Louisiana. The deviation is necessary to perform extensive rehabilitation to the bridge. This deviation allows the bridge to remain closed to navigation completely from January 18,...

  18. L'Infection Nosocomiale en Reanimation des Brules

    PubMed Central

    Siah, S.; Belefqih, R.; Elouennass, M.; Fouadi, F.E.; Ihrai, I.

    2009-01-01

    Summary L'infection nosocomiale bactérienne étant l'une des principales causes de morbidité et de mortalité chez le brûlé, nous avons réalisé une étude rétrospective portant sur 84 patients hospitalisés au sein du service de réanimation des brûlés de l'Hôpital Militaire d'Instruction Mohammed V de Rabat, sur une période de 3 ans, du premier janvier 2001 au 31 décembre 2003. Les critères d'infection nosocomiale étaient ceux du Center for Disease Control d'Atlanta de 1988. Les taux d'incidence ont été calculés. La population infectée a été comparée à celle non infectée. L'écologie bactérienne du service a été décrite comme aussi l'antibiotype. Il ressort de cette étude la survenue de 87 infections nosocomiales chez 27 patients. L'incidence cumulative était de 103 infections pour 1000 jours de traitement. Pour ce qui est des caractéristiques des infections bactériennes, les sites infectés étaient la peau (77%), le sang (13,8%), les voies urinaires (8%) et les poumons (1,1%). Les principaux germes étaient: Staphylococcus sp. (33,3%), Pseudomonas aeruginosa (23%), Enterococcus faecalis et Acinetobacter (8%). Les staphylocoques étaient méticillo-résistants dans 22,2% des cas. Le Pseudomonas et l'Acinetobacter étaient multirésistants (60%). Dans notre étude les facteurs prédictifs de survenue des infections nosocomiales que nous avons retenus après l'étude comparative des populations infectées et non infectées ont été l'âge, le body mass index, l'abbreviated burn severity index et le remplissage initial. En isolant ces paramètres, nous avons pu établir une équation à valeur prédictive de survenue d'infection nosocomiale chez le patient brûlé. PMID:21991158

  19. Gender relations and economic issues.

    PubMed

    Elson, D

    1993-10-01

    While most discussions of economic issues pay no explicit attention to gender relations, most economic policy is marked by male bias which provides women with an unequal access to resources. This situation exists because most economists, officials, and business managers lack the imagination to see the gender impact of economic issues and most women's groups and researchers lack the language to portray this connection. This article explores some aspects of this gap and aims to provide women with the ability to effectively discuss economic issues. After an introduction, the article considers the basic problem caused by the fact that the economy is defined primarily in terms of money-making activities. This leads to a male bias since much of women's work occurs outside of the monetary sphere. The next section looks at how a failure to understand the significance of gender relations will interfere with the fulfillment of policy objectives. This discussion is followed by a description of how cutbacks in government expenditures increase the burden on women who must replace the services. Problems with the option of the private-sector replacing government services, such as the fact that increasing disposable income in households does not guarantee that unpaid labor will be reduced and the fact that the private sector may fail to expand in a productive way, are covered. The article then touches on the new emphasis placed by some economists and policy makers on cooperative and interactive solutions to these problems and ends by mentioning three new initiatives which seek to build capacity for gender-aware economic analysis: the development of a training program at Manchester University in the UK, coordination of an international research workshop by the University of Utah in the US, and development of an international association for feminist economics based in the US. PMID:12320735

  20. Optical Issues in Measuring Strabismus.

    PubMed

    Irsch, Kristina

    2015-01-01

    Potential errors and complications during examination and treatment of strabismic patients can be reduced by recognition of certain optical issues. This articles reviews basic as well as guiding principles of prism optics and optics of the eye to equip the reader with the necessary know-how to avoid pitfalls that are commonly encountered when using prisms to measure ocular deviations (e.g., during cover testing), and when observing the corneal light reflex to estimate ocular deviations (e.g., during Hirschberg or Krimsky testing in patients who do not allow for cover testing using prisms). PMID:26180462

  1. Ethical issues in transfusion medicine.

    PubMed

    Elhence, Priti

    2006-01-01

    The practice of transfusion medicine involves a number of ethical issues because blood comes from human beings and is a precious resource with a limited shelf life. In 1980 the International Society of Blood Transfusion endorsed its first formal code of ethics, which was adopted by the World Health Organisation and the League of Red Crescent Societies. A revised code of ethics for donation and transfusion was endorsed in 2000. Blood donation as a gift, donor confidentiality, donor notification and donor consent, consent for transfusion, the right to refuse blood transfusion, the right to be informed if harmed, and ethical principles for establishments, are discussed in the international and Indian contexts. PMID:17223681

  2. Cloud Computing Security Issue: Survey

    NASA Astrophysics Data System (ADS)

    Kamal, Shailza; Kaur, Rajpreet

    2011-12-01

    Cloud computing is the growing field in IT industry since 2007 proposed by IBM. Another company like Google, Amazon, and Microsoft provides further products to cloud computing. The cloud computing is the internet based computing that shared recourses, information on demand. It provides the services like SaaS, IaaS and PaaS. The services and recourses are shared by virtualization that run multiple operation applications on cloud computing. This discussion gives the survey on the challenges on security issues during cloud computing and describes some standards and protocols that presents how security can be managed.

  3. Issues in sabotage vulnerability assessments

    SciTech Connect

    Edmunds, T.A.; Fortney, D.S.

    1993-07-01

    Recent changes in DOE policy have led to requirements and guidance for conducting more comprehensive, integrated assessments of the risks of radiological and toxicological sabotage. Under the new policy, sites are required to follow an eight step procedure for ranking targets, evaluating release scenarios, and selecting risk reduction options for sabotage events that have off-site or on-site consequences. In this paper, we highlight issues that must be addressed in performing the analysis and suggest some approaches for their resolution. We also outline automated approaches for ranking sabotage targets and for selection of system upgrades.

  4. Evolving issues in surrogate motherhood.

    PubMed

    Erlen, J A; Holzman, I R

    1990-01-01

    Surrogate mothering is an arrangement whereby a woman who gives birth to an infant intends--through a contractual agreement--to give that baby to another couple. The recent Baby M case in the United States has raised numerous legal concerns causing many legislative bodies to consider possible statutes to regulate or prohibit surrogacy. The competing interests among and between the individuals involved in this relationship (i.e., the surrogate mother, the couple, the baby, and society) suggest various ethical issues related to benefits, risks, and autonomy. Legal and ethical concerns surrounding the technologically possible procedure of surrogate motherhood are discussed. PMID:2391288

  5. Productivity issues at organizational interfaces

    NASA Technical Reports Server (NTRS)

    Holland, A. W.

    1985-01-01

    The need for close interdependence between large numbers of diverse and specialized work groups makes the Space Program extremely vulnerable to loss of productivity at organizational interfaces. Trends within the program also suggest that the number and diversity of interfaces will grow in the near term. Continued maintenance of R&D excellence will require that interface performance issues be included in any future productivity improvement effort. The types and characteristics of organizational interfaces are briefly presented, followed by a review of factors which impact their productivity. Approaches to assessing and improving interface effectiveness are also discussed.

  6. Gastrointestinal Issues in Liver Disease.

    PubMed

    Olson, Jody C; Saeian, Kia

    2016-07-01

    Gastrointestinal (GI) complications of cirrhosis are frequent in patients who require intensive care support and are often the primary indication for intensive care unit (ICU) admission. Perhaps the most worrisome GI complication for the intensivist is variceal hemorrhage. Bleeding from esophageal or gastric varices represents a life-threatening event for cirrhotic patients and provides management challenges for the ICU team. Nonvariceal GI bleeding, impaired GI motility, and malnutrition also provide significant challenges for the intensivist. This article reviews GI issues that present in critically ill cirrhotic patients and their management in the acute setting. PMID:27339677

  7. Existential issues in group psychotherapy.

    PubMed

    Frankel, Bernard

    2002-04-01

    Existential issues in group psychotherapy derive from existential thought both as a philosophy and as a value system. Its origins derive from the weakening of traditional values and the growing alienation of man from himself. The unique features of existentialism can be applied to all forms of therapy. These features are universal to humankind. They are finiteness, aloneness, guilt, responsibility, and freedom. In including existential concerns as part of group psychotherapy, therapist and patients move more closely to bilateral relationships and subjective interactions. PMID:11928200

  8. Manned Mars mission psychological issues

    NASA Technical Reports Server (NTRS)

    Santy, Patricia A.

    1986-01-01

    The research on isolated environments over the last thirty years suggests that psychological factors associated with such environments will lead to negative changes in individual and group performance. A mission to Mars will be the greatest undertaking ever devised by the human species. The members of such a mission will be in an environment whose potential dangers are not even completely known at this time. The psychological factors generated by such an environment, and which might adversely affect accomplishment of mission goals, can be minimized or planned for in advance. It is hoped that these issues will not be ignored in planning for this great adventure.

  9. Plants and gravity. Special issue

    NASA Technical Reports Server (NTRS)

    Kiss, J. Z. (Principal Investigator)

    2002-01-01

    This issue of the Journal of Plant Growth Regulation explores the effects of gravity on plant growth and development from several perspectives. Most of the review papers consider plants and gravity from the viewpoint of ground-based laboratory research, and several papers consider gravitropism, the directed growth in response to gravity, in some detail. However, another approach to study the effects of gravity on plant is to effectively remove the force due to gravity. A very dramatic way to accomplish this goal is through the free-fall conditions achieved by spacecraft in low Earth orbit, so some of the authors have reviewed recent advances in spaceflight research with plant systems.

  10. Psychological issues in pediatric obesity

    PubMed Central

    Kalra, Gurvinder; De Sousa, Avinash; Sonavane, Sushma; Shah, Nilesh

    2012-01-01

    Pediatric obesity is a major health problem and has reached epidemiological proportions today. The present paper reviews major psychological issues in pediatric obesity from a developmental perspective. Research and literature has shown that a number of developmental, family, maternal and child factors are responsible in the genesis of pediatric obesity. Family food habits, early developmental lifestyle of the child, parenting, early family relationships and harmony all contribute towards the growth and development of a child. The present review focuses on the role of developmental psychological factors in the pathogenesis of pediatric obesity and highlights the developmental factors that must be kept in mind when evaluating a case of pediatric obesity. PMID:23766572

  11. Lignes directrices canadiennes sur l’utilisation sécuritaire et efficace des opioïdes pour la douleur chronique non cancéreuse

    PubMed Central

    Kahan, Meldon; Wilson, Lynn; Mailis-Gagnon, Angela; Srivastava, Anita

    2011-01-01

    Résumé Objectif Présenter aux médecins de famille un résumé clinique pratique sur la prescription d’opioïdes à des populations particulières en se fondant sur les recommandations faites dans les lignes directrices canadiennes sur l’utilisation sécuritaire et efficace des opioïdes pour la douleur chronique non cancéreuse. Qualité des données Pour produire les lignes directrices, les chercheurs ont effectué une synthèse critique de la littérature médicale en insistant plus précisément sur les études de l’efficacité et de la sécurité des opioïdes dans des populations particulières. Message principal Les médecins de famille peuvent atténuer les risques de surdose, de sédation, d’usage abusif et de dépendance grâce à des stratégies adaptées à l’âge et à l’état de santé des patients. Dans le cas de patients à risque de dépendance, on devrait réserver les opioïdes aux douleurs nociceptives ou neuropathiques bien définies qui n’ont pas répondu aux traitements de première intention. Il faut procéder lentement au titrage des opioïdes, avec des dispensations fréquentes et une étroite surveillance pour dépister tout signe d’usage abusif. Une dépendance aux opioïdes suspectée est prise en charge au moyen d’une thérapie structurée aux opioïdes, d’un traitement à la méthadone ou à la buprénorphine ou encore d’un traitement fondé sur l’abstinence. Les patients souffrant de troubles de l’humeur ou d’anxiété ont tendance à avoir une réponse analgésique atténuée aux opioïdes, sont à risque plus élevé d’usage abusif et prennent souvent des sédatifs qui interagissent défavorablement avec les opioïdes. Il faut prendre des précautions semblables à celles utilisées avec d’autres patients à risque élevé. Il faut faire un sevrage progressif si la douleur du patient demeure sévère même avec un essai adéquat de thérapie aux opioïdes. Chez les personnes âgées, la s

  12. Les reseaux de politique publique comme facteur d'influence du choix des instruments de politique energetique canadienne a des fins environnementales de 1993 a nos jours

    NASA Astrophysics Data System (ADS)

    Fathy El Dessouky, Naglaa

    Au cours de la derniere decennie, les modes de la gouvernance ont pris place dans un contexte totalement different de celui qu'ils avaient auparavant. Les gouvernements modernes se rendent compte qu'ils perdent de plus en plus leur capacite a elaborer et a gerer les changements d'une maniere autonome. Ainsi, les fonctions et les activites traditionnellement accomplies exclusivement par le gouvernement engagent de nos jours une gamme d'acteurs etatiques et non etatiques. A l'encontre du concept traditionnel de l'Etat controleur, la gouvernance contemporaine est ainsi devenue moins une question d'offre de service et davantage une gestion indirecte des reseaux de politique publique. Dans cette entreprise, les gouvernements contemporains, cherchant plus d'information, de soutien et de legitimite en matiere de formulation des decisions, ont besoin d'etablir des relations avec les divers groupes d'interet qui, a leur tour, voulaient plus de promotion et de protection en faveur de leurs interets a travers leur implication au processus de l'elaboration et de la mise en oeuvre des politiques publiques. Ainsi, l'approche des reseaux de politique publique represente aujourd'hui un courant considerable au sein du champ d'analyse des politiques publiques. Toutefois, les preoccupations des chercheurs pour cette approche, dans le domaine des politiques energetiques a des fins environnementales, semblent recentes, et les etudes realisees sont encore trop peu nombreuses. Au Canada, au debut des annees 1990, le gouvernement ainsi que plusieurs groupes d'interets, des differents secteurs energetique, industriel et environnemental, ont commence a intensifier leurs efforts pour s'attaquer au probleme du changement climatique d'origine energetique, genere surtout par le secteur de l'industrie. Au cours de la derniere decennie, la question touchant plutot le sujet du developpement energetique durable represente le plus important domaine des politiques publiques ayant surgi recemment dans

  13. Relation entre les caractéristiques des table-bancs et les mesures anthropométriques des écoliers au Benin

    PubMed Central

    Falola, Stève Marjelin; Gouthon, Polycarpe; Falola, Jean-Marie; Fiogbe, Michel Armand; Nigan, Issiako Bio

    2014-01-01

    Introduction Le mobilier scolaire et la posture assise en classe sont souvent impliqués dans l'apparition des douleurs rachidiennes, influant de fait sur la qualité des tâches réalisées par les apprenants. Aucune étude n'a encore vérifié le degré d'adéquation entre les caractéristiques du mobilier et celles des écoliers au Bénin. L'objectif de cette étude transversale est donc de déterminer la relation entre les dimensions des table-bancs utilisées en classe et les mesures anthropométriques des écoliers au Bénin. Methods Elle a été réalisée avec un échantillon probabiliste de 678 écoliers, âgés de 4 à 17 ans. Les mesures anthropométriques des écoliers et les mensurations relatives aux longueurs, largeurs et hauteurs des table-bancs ont été mesurées, puis intégrées aux équations proposées dans la littérature. Les pourcentages des valeurs situées hors des limitesacceptables, dérivées de l'application des équations ont été calculés. Results La largeur et la hauteur des table-bancs utilisées par les écoliers étaient plus élevées (p < 0,05) que les valeurs de référence recommandées par les structures officielles de contrôle et de production des mobiliers scolaires au Bénin. Quel que soit le sexe, il y avait une inadéquation entre la largeur du banc et la longueur fesse-poplité, puis entre la hauteur de la table et la distance coude-bancdes écoliers. Conclusion Les résultats suggèrent de prendre en compte l’évolution des mesures anthropométriques des écoliers dans la confection des table-bancs, afin de promouvoir de bonnes postures assises en classe et de réduire le risque de troubles du rachis. PMID:25317232

  14. Malformations vasculaires au cours du syndrome de Williams-Beuren: à propos de trois nouvelles observations

    PubMed Central

    Sator, Hicham; Rhouni, Fatima Ezzahra; Benjouad, Ibitihale; Rhouni, Fatima Ezzahra; Benjouad, Ibitihale; Dafiri, Rachida; Chat, Latifa

    2016-01-01

    Le syndrome de Williams-Beuren est une maladie génétique rare, il associe classiquement une dysmorphie faciale assez spécifique, des malformations cardiovasculaires et un profil neuropsychologique particulier. Nous rapportons les observations de trois enfants atteints du syndrome de Williams-Beuren en insistant surtout sur les anomalies vasculaires observées sur l'angio-scanner et angio-IRM. PMID:27200143

  15. Optimisation des proprietes fonctionnelles des alliages a memoire de forme suite a l'application de traitements thermomecaniques

    NASA Astrophysics Data System (ADS)

    Demers, Vincent

    L'objectif de ce projet est de determiner les conditions de laminage et la temperature de traitement thermique maximisant les proprietes fonctionnelles de l'alliage a memoire de forme Ti-Ni. Les specimens sont caracterises par des mesures de calorimetrie, de microscopie optique, de gene ration de contrainte, de deformation recuperable et des essais mecaniques. Pour un cycle unique, l'utilisation d'un taux d'ecrouissage e=1.5 obtenu avec l'application d'une force de tension FT = 0.1sigma y et d'une huile minerale resulte en un echantillon droit, sans microfissure et qui apres un recuit a 400°C, produit un materiau nanostructure manifestant des proprietes fonctionnelles deux fois plus grandes que le meme materiau ayant une structure polygonisee. Pour des cycles repetes, les memes conditions de laminage sont valables mais le niveau de deformation optimal est situe entre e=0.75-2, et depend particulierement du mode de sollicitation, du niveau de stabilisation et du nombre de cycles a la rupture requis par l'application.

  16. Myomas: anatomy and related issues.

    PubMed

    Tinelli, Andrea; Sparic, Radmila; Kadija, Saša; Babovic, Ivana; Tinelli, Raffaele; Mynbaev, Ospan A; Malvasi, Antonio

    2016-06-01

    Myomas are the most common disorder of the female genital organs, occurring more frequently throughout women's reproductive years. Myomas are a major health issue all over the world. They develop as a monoclonal tumor from cells influenced by ovarian steroids, and mediated by surrounding myometrial cells by paracrine mechanisms. During its growth, a myoma compresses the surrounding tissue, causing the formation of a pseudocapsule, encapsulating the myoma. The mechanical properties of myomas are a key factor which can contribute to their growth. While myomas are essentially rigid, their pseudocapsule is more elastic, and this allows uterine adaptation to the growing myoma. Hence, the pseudocapsule induces displacement on the myometrium, which is not destructive since the integrity and contractility of uterine structure is maintained. Extensive research conducted on the myoma and its pseudocapsule has produced important data. Scientific research is still trying to clarify some of the evidence regarding the influence of myomas on infertility, especially in the case of intramural myomas. During fertility-sparing myoma surgery, data suggest that during myoma removal the pseudocapsule should be preserved. However, unsolved issues still exist on the cesarean myomectomy technique, since the age of pregnancy has been increasing in the new millennium, so patients present with myomas which should be removed before and during the cesarean section, or prior to applying for medically-assisted reproduction. PMID:26785282

  17. KSC Electrostatic Discharge (ESD) Issues

    NASA Technical Reports Server (NTRS)

    Buhler, Charles

    2008-01-01

    Discussion of key electrostatic issues that have arisen during the past few years at KSC that the Electrostatics Laboratory has studied. The lab has studied in depth the Space Shuttle's Thermal Control System Blankets, the International Space Station Thermal Blanket, the Pan/Tilt Camera Blankets, the Kapton Purge Barrier Curtain, the Aclar Purge Barrier Curtain, the Thrust Vector Controller Blankets, the Tyvek Reaction Control System covers, the AID-PAK and FLU-9 pyro inflatable devices, the Velostat Solid Rocket Booster mats, and the SCAPE suits. In many cases these materials are insulating meaning that they might be a source of unsafe levels of electrostatic discharge (ESD). For each, the lab provided in-depth testing of each material within its current configuration to ensure that it does not cause an ESD concern that may violate the safety of the astronauts, the workers and equipment for NASA. For example the lab provides unique solutions and testing such as Spark Incendivity Testing that checks whether a material is capable of generating a spark strong enough to ignite a flammable gas. The lab makes recommendations to changes in specifications, procedures, and material if necessary. The lab also consults with a variety of non-safety related ESD issues for the agency.

  18. Controversial issues: female genital mutilation.

    PubMed

    Richards, D

    2000-01-01

    As immigrant women from African countries enter the U.S., Canada, Australia, and Western Europe, western health care providers are beginning to see patients affected by the cultural practice of Female Genital Mutilation (FGM). Unfamiliar with the practice, either medically or culturally, these providers are turning to medical librarians for information. Complicating the issue are the strong negative feelings most western health care workers have about FGM, which appears to them to be both barbaric and cruel. These feelings may conflict strongly with those of their immigrant patients, who regard the practice as normal and desirable. Both medical and cultural information are needed for the professional to provide treatment of medical conditions, while also establishing a good relationship with the FGM affected patient. This article identifies and describes the most important refereed journal article databases, available now over the Internet, providing both medical and cultural information on FGM, and the most useful Web sites for health professionals, librarians, and interested laypersons who need information about this difficult multicultural issue. PMID:11299679

  19. Surrogate mothers: the legal issues.

    PubMed

    Mady, T M

    1981-01-01

    Increasing numbers of couples have benefitted from, or may be considering use of, the surrogate mother procedure. In this procedure, a couple, usually a husband and wife, enters into a contract with a surrogate mother. Under the terms of the contract, the surrogate mother is artificially inseminated, bears a child, and relinquishes all rights regarding that child to the semen donor and his wife. In exchange for bearing a child, the surrogate mother often receives a fee. In light of such increased use of the procedure, the issue of whether or not the arrangement is legal has particular importance. Questions of legality involve possible violations of criminal baby-selling statutes. Issues of whether adoption is necessary and whether the child is legitimate also are inherent in the surrogate mother arrangement. This Note argues that these questions should be resolved in favor of finding no impediment to the use of the surrogate mother procedure, at least within certain guidelines. However, even in the absence of legal impediment, detailed contracts and thorough medical screening for genetic, physical and psychological problems would further eliminate ambiguities regarding liability. In addition, the Note concludes that legislation should be enacted to deal with the legal ambiguities of the surrogate mother arrangement. This legislation should regulate the parties that enter into such an arrangement and the rights and responsibilities of these parties. PMID:7332012

  20. Hot gas filtration technical issues

    SciTech Connect

    Pontius, D.H.

    1995-11-01

    The primary objective of this research has been to provide an understanding of factors pertinent to the development of an effective filtration system for removing particles from high-temperature, high-pressure gas streams in advanced power generation systems under development by the Department of Energy. Information used to define the filtration system issues was compiled from the Morgantown Energy Technology Center (METC) Contractors Conferences, specific tasks assigned to Southern Research Institute, meetings with METC personnel and contractors, and other conferences and workshops organized by METC. Initial research and pilot scale installations have shown that there are some potential problem areas. Thick ash deposits have formed, bridging from passive surfaces to the filter material and between filter candles. A great number of ceramic filters have broken in various experimental and demonstration devices, especially during long-term testing. This paper reviews particulate characteristics (effects on filtration processes, conventional fly ash, gasifier char, PFBC ash, and detailed studies of PFBC ash) and ceramic filter materials (general issues, thermal stress, clay-bonded SiC filter materials, and monolithic ceramic materials).

  1. Human Mars Mission Contamination Issues

    NASA Technical Reports Server (NTRS)

    Lupisella, M. L.

    2001-01-01

    A potential challenge for a human Mars mission is that while humans are by most measures the obvious best way to search for life on Mars, we may also be the most problematic in that we could unduly compromise the search for life by contaminating relevant environments and/or possibly adversely and irreversibly affecting indigenous life. Perhaps more problematic is the fundamental epistemic challenge of the "one data point" limitation which could decrease confidence in applying terrestrially based research to extraterrestrial life issues in general. An informal decision tree is presented as one way to begin thinking about contamination issues. There are many sub-questions and distinctions not shown such as biological vs. nonbiological (but biologically relevant) contamination, viable vs. dead organisms, masking indigenous organisms vs. merely making the search more difficult, and independent origin vs. panspermia distinctions. While it may be unlikely that terrestrial microbes could survive on Mars, let alone reproduce and unduly compromise the search for life, the unpredictable potential for microbial life to survive, grow exponentially, evolve and modify (and sometimes destroy) environments, warrants focusing carefully on biologically relevant contamination as we prepare to send humans to the first planet that may have indigenous life-forms.

  2. Information superhighway: Issues affecting development

    NASA Astrophysics Data System (ADS)

    1994-09-01

    Technological advances in the transmission of voice, video, and data are fostering fundamental changes in the telecommunications industry. For example, large local telephone companies plan to offer video services in competition with cable and broadcast television, while cable television companies plan to offer local telephone service over their wires in competition with the local telephone companies. The administration believes that these technological changes provide the opportunity to develop an 'Information Superhighway' that could provide every element of society with ready access to data, voice, and video communications. Concurrently, the Congress is considering sweeping changes to telecommunications regulations to keep pace with this dynamic industry. GAO prepared this report to serve as an overview of three key issues that decisionmakers may face as they deliberate telecommunications legislation; it focuses on three pivotal issues they face in formulating new telecommunications legislation: (1) managing the transition to a more competitive local telecommunications marketplace; (2) ensuring that all consumers have access to affordable telecommunications as competition develops; and (3) ensuring that the Information Superhighway provides adequate security, privacy, reliability, and interoperability.

  3. Strategic defense initiative: critical issues

    SciTech Connect

    Nuckolls, J.H.

    1985-06-01

    The objectives of the Strategic Defense Initiative (SDI) as outlined by President Reagan are discussed. The principal objective for SDI is as a defense against ballistic missiles. Soviet objections and a summary of US-USSR dialogue on the subject are reviewed. Most US studies have been critical of SDI. Four critical issues are addressed in depth: are defense weapons technologically feasible which have high economic leverage relative to offensive ballistic missiles; would the defense feasibility and leverage be degraded or enhanced in the technological race between weapons innovation and countermeasures; could stability be achieved during and after the transition to the defense dominated world envisioned by SDI proponents; would the deployment of high leverage defensive weapons increase or decrease the security of NATO Europe, and the probability of major conventional or nuclear wars. The issue of SDI may lead to a paradox that contains the seeds of catastrophe. The author concludes by warning that nuclear disarmament may eliminate the highly successful deterrent mechanism for avoiding another major world war. In a world made safe for major conventional wars by the apparent ''elimination'' of nuclear weapons, the leaders in a conventional World War III - involving unimaginable suffering, hatred, terror, and death - would be strongly motivated to introduce nuclear weapons in the crucial decisive battles. Even if diplomacy could ''eliminate'' nuclear weapons, man's knowledge of nuclear weapons can never be eliminated. The paradox is the attempt to eliminate nuclear weapons may maximize the probability of their use. (DMC)

  4. Recuperation d'energie issue des deformations de structures aeronautiques a l'aide de materiaux piezoelectriques

    NASA Astrophysics Data System (ADS)

    Debeaux, Sebastien

    Aerospace structural maintenance (fuselage, wings) is a major component of operational costs which requires aircraft to be grounded and some of its parts to be dismantled in order to proceed to inspection. In order to allow in situ monitoring, Structural Health Monitoring (SHM) has been proposed where sensors and actuators are integrated on the structure. To avoid extensive wiring of the nodes, wireless sensors and actuators are attractive but should be self powered to fully benefit from them. One idea is to convert the mechanical energy (vibrations) available all over an aircraft into electricity using piezoelectric materials. This work investigates the potential of strain-based energy harvesters (as opposed to inertial harvesters) to supply wireless nodes on typical aircraft structures. A simple model is used to describe typical dynamic behavior of aircraft components: a beam representing the whole wing subjected to aerodynamic loading and a plate representing a fuselage panel subjected to pressure fields (jet noise and turbulent boundary layer). Various configurations of piezoelectric materials are tested such as bulk PZT, PZT fiber composite and Polyvinylidene Fluoride (PVDF) in order to evaluate the influence of their characteristics (size, polarization, electrodes' shape, capacitance...) on the harvested power. The results show that for a typical aerospace excitation of the beam (10 Hz and 56 μdef), the energy produced is up to 40 mJ with bulk PZT for a 7 minutes loading time. From the literature, this appears sufficient for RF transmission (25 μJ). For other excitation sources (for instance jet noise), the energy produced is up to only 1 mJ with bulk PZT for a 25 minutes loading time. The drawback is that we should wait for several seconds in order to charge the harvester's battery. And, considering that many other components than the RF transceiver will require energy in the meantime, the time laps between two' measures could increase to several minutes. Therefore, strain-based energy harvester could be used for supplying wireless sensor nodes but they would not allow real time measurement. However this approach is a simple and convenient way to scavenge energy compared to other kinds of harvesters (inertial, solar...) since it amounts to bonding a piezoelectric material on a flexible surface. Some design advices are eventually proposed for this kind of harvesters. They could be used for designing a harvester able to produce desired power from a known excitation. Keywords: Power harvesting, piezoelectric, piezoelectric fiber composite, vibration energy, structural health monitoring.

  5. EDITORIAL: 50th anniversary issue

    NASA Astrophysics Data System (ADS)

    Beddoe, Alun H.

    2006-07-01

    In July 1956, 50 years ago, the first issue of Physics in Medicine and Biology (PMB) was published. It was subtitled The Journal of the Hospital Physicists' Association and published in association with the Philosophical Magazine by Taylor and Francis. Subscriptions were £1 per part or £3 10s for an annual subscription. The Editor, Professor J E Roberts, prefaced the first issue with a cautious editorial noting: The appearance of a new journal is usually greeted with mixed feelings by scientific workers, a common response being that there are far too many journals already. Justification for a new publication is only possible if there is a clearly defined gap in the publishing facilities available to workers in a particular scientific field.... Professor Roberts ended by seeking support from the scientific community for the new venture. He certainly got it! From a tentative few hundred pages in four issues a year for the first few years, the journal is now issued twice monthly with nearly 8000 pages expected in volume 51. In this anniversary issue we have invited some 28 senior authors to submit papers on a range of subjects spanning the discipline. We decided that to be an author one had to be old, but age was not to be the only criterion! Indeed readers will recognize all names as major contributors to both the development of medical physics and the success of PMB. Authors were not asked to write formal topical reviews of the state-of-the-art of the sub-disciplines which make up medical physics, but rather to present short historical reviews, didactic in style, perhaps highlighting the role of PMB in the development of their fields. Nevertheless, other than a page limit (which many subsequently ignored!) no formal format was imposed on authors, so what follows is a range of contributions from the almost conversational, personal statement to the more formal and familiar scientific paper. Whatever the writing style we are confident that readers will gain some

  6. Ethical issues in organ transplantation.

    PubMed

    Abouna, George M

    2003-01-01

    Clinical organ transplantation has been recognized as one of the most gripping medical advances of the century as it provides a way of giving the gift of life to patients with terminal failure of vital organs, which requires the participation of other fellow human beings and of society by donating organs from deceased or living individuals. The increasing incidence of vital organ failure and the inadequate supply of organs, especially from cadavers, has created a wide gap between organ supply and organ demand, which has resulted in very long waiting times to receive an organ as well as an increasing number of deaths while waiting. These events have raised many ethical, moral and societal issues regarding supply, the methods of organ allocation, the use of living donors as volunteers including minors. It has also led to the practice of organ sale by entrepreneurs for financial gains in some parts the world through exploitation of the poor, for the benefit of the wealthy. The current advances in immunology and tissue engineering and the use of animal organs, xenotransplantation, while offering very promising solutions to many of these problems, also raise additional ethical and medical issues which must be considered by the medical profession as well as society. This review deals with the ethical and moral issues generated by the current advances in organ transplantation, the problem of organ supply versus organ demand and the appropriate allocation of available organs. It deals with the risks and benefits of organ donation from living donors, the appropriate and acceptable methods to increase organ donation from the deceased through the adoption of the principle of 'presumed consent', the right methods of providing acceptable appreciation and compensation for the family of the deceased as well as volunteer and altruistic donors, and the duties and responsibilities of the medical profession and society to help fellow humans. The review also deals with the appropriate

  7. Critical Issues in Plasma Accelerator

    NASA Astrophysics Data System (ADS)

    Uesaka, M.; Hosokai, T.

    2004-10-01

    Updated achievements and critical issues in plasma accelerators are summarized. As to laser plasma accelerators, we cover the results of plasma cathodes by U.Michigan, LBNL, LOA and U.Tokyo. Although many new results of accelerated electrons have been reported, the electrons do not yet form a bunch with narrow energy spread. Several injection schemes and measurements to verify ultrashort bunch (tens fs) with narrow energy spread, low emittance and many charges are planned. E-162 experiments by UCLA / USC / SLAC and a newly proposed experiment on density transition trapping are introduced for electron beam driven plasma accelerators. Their main purpose is realization of GeV plasma accelerator, but application to pump-and-probe analysis for investigation of ultrafast quantum phenomena is also promising.

  8. Psychohistory and Slavery: Preliminary Issues.

    PubMed

    Adams, Kenneth Alan

    2015-01-01

    "Psychohistory and Slavery: Preliminary Issues," begins an examination of slavery in the antebellum South. The paper suggests that how slavery and the group-fantasy of white male supremacy were perpetuated among slaveholders is a question of fundamental importance for psychohistorians. The family and childrearing are the focus of attention. Given the ferocity of slavery, it is argued that the psychological and emotional consequences of this barbarism were not limited to the slaves themselves, but had significant impact on the slaveholders as well-their parenting, their children, and their children's parenting of the next generation. In each generation the trauma of slavery was injected into slaveholder children and became a fundamental component of elite Southern personality. PMID:26462403

  9. Quality Issues of Research Antibodies

    PubMed Central

    Weller, Michael G.

    2016-01-01

    According to several recent studies, an unexpectedly high number of landmark papers seem to be not reproducible by independent laboratories. Nontherapeutic antibodies used for research, diagnostic, food analytical, environmental, and other purposes play a significant role in this matter. Although some papers have been published offering suggestions to improve the situation, they do not seem to be comprehensive enough to cover the full complexity of this issue. In addition, no obvious improvements could be noticed in the field as yet. This article tries to consolidate the remarkable variety of conclusions and suggested activities into a more coherent conception. It is concluded that funding agencies and journal publishers need to take first and immediate measures to resolve these problems and lead the way to a more sustainable way of bioanalytical research, on which all can rely with confidence. PMID:27013861

  10. Issues of Rural Light Pollution

    NASA Astrophysics Data System (ADS)

    Osborn, W. H.; Hammer, R. L.; Hammer, A.

    2001-12-01

    Light pollution is generally considered mostly an urban problem. Common sources of light pollution are poorly designed lighting of streets, parking lots, businesses and advertizing signs and for security. These sources, and the amount of light pollution generated, increase with population density. Nevertheless, light pollution can also be significant in rural areas. Rural light pollution differs from that in urban settings, both in the types of pollution and in the means that must be employed to control it. In the country the offending sources are often isolated lights such as from farm barns, vacation cottages, radio and cell phone towers, and road intersections. A culture of strong property rights and privacy rights affects attempts to control rural light pollution. We describe how some of these issues may be addressed based on the results from an Eagle Scout project carried out in central Michigan.

  11. Theoretical issues in Spheromak research

    SciTech Connect

    Cohen, R. H.; Hooper, E. B.; LoDestro, L. L.; Mattor, N.; Pearlstein, L. D.; Ryutov, D. D.

    1997-04-01

    This report summarizes the state of theoretical knowledge of several physics issues important to the spheromak. It was prepared as part of the preparation for the Sustained Spheromak Physics Experiment (SSPX), which addresses these goals: energy confinement and the physics which determines it; the physics of transition from a short-pulsed experiment, in which the equilibrium and stability are determined by a conducting wall (``flux conserver``) to one in which the equilibrium is supported by external coils. Physics is examined in this report in four important areas. The status of present theoretical understanding is reviewed, physics which needs to be addressed more fully is identified, and tools which are available or require more development are described. Specifically, the topics include: MHD equilibrium and design, review of MHD stability, spheromak dynamo, and edge plasma in spheromaks.

  12. Psychiatric Issues in Cognitive Impairment

    PubMed Central

    Aarsland, Dag; Taylor, John-Paul; Weintraub, Daniel

    2015-01-01

    Neuropsychiatric symptoms (NPS) such as depression, hallucinations and apathy commonly occur in Parkinson’s disease (PD) and have major clinical consequences including a negative impact on quality of life. This review discusses the epidemiology, clinical features, diagnostic procedures and treatment issues of NPS in PD and related disorders in the perspective of cognitive impairment, focusing on depression, anxiety, visual hallucinations, apathy, sleep disturbances, impulse control disorder and non-motor fluctuations. The majority of NPS are more common in PD patients with dementia, possibly related to shared underlying pathologies. Recent studies also suggest that NPS are associated with mild cognitive impairment in PD, in particular with the amnestic type. Accurate diagnosis of NPS is important but can be difficult, due to overlapping symptoms and similar appearance of symptoms of motor symptoms of parkinsonism, cognitive impairment, mood disorders and apathy. There are few systematic studies focusing on the management of NPS in PD with cognitive impairment. PMID:24757113

  13. Final RQ adjustments rule issued

    SciTech Connect

    Bergeson, L.L.

    1995-08-01

    On June 12, 1995, the US Environmental Protection Agency (EPA) issued its long awaited final rule adjusting certain reportable quantities (RQs) for hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). The rule: revises the table of hazardous substances to add 47 individual Clean Air Act (CAA) hazardous air pollutants (HAPs); adjustments their statutory one-pound RQs; adds five other CAA HAPs that are categories of substances and assigns no RQ to the categories; and adjusts RQs for 11 Resource Conservation and Recovery Act (RCRA) listed hazardous wastes. EPA made conforming changes to the Clean Water Act table of hazardous substances and the Emergency Planning and Community Right-to-Know Act (EPCRA) table of extremely hazardous substances. The rule became effective July 12, 1995.

  14. Ethical issues in integrative oncology.

    PubMed

    Ben-Arye, Eran; Schiff, Elad; Golan, Ofra

    2008-08-01

    Integrative oncology relates to an emerging dialog between complementary and alternative medicine (CAM) scholars, oncologists, family practitioners, and other health care providers who envision an extended and holistic patient-centered approach to oncology care. The multiple commitments of integrative oncology to a medical humanistic approach and to a strong evidence-based foundation may impose considerable ethical concerns and dilemmas. The authors use narrative ethics to present a case study that exemplifies the ethical challenges confronting physicians and health care providers who wish to provide an integrative approach for their patients. An ethical analysis of the narrative is provided to help clarify the ethical issues and conflicts within it. Finally, a framework that may transform ethical constraints to a communication tool is proposed. PMID:18638699

  15. Measurement issues in environmental epidemiology.

    PubMed Central

    Hatch, M; Thomas, D

    1993-01-01

    This paper deals with the area of environmental epidemiology involving measurement of exposure and dose, health outcomes, and important confounding and modifying variables (including genotype and psychosocial factors). Using examples, we illustrate strategies for increasing the accuracy of exposure and dose measurement that include dosimetry algorithms, pharmacokinetic models, biologic markers, and use of multiple measures. Some limitations of these methods are described and suggestions are made about where formal evaluation might be helpful. We go on to discuss methods for assessing the inaccuracies in exposure or dose measurements, including sensitivity analysis and validation studies. In relation to measurement of health outcomes, we discuss some definitional issues and cover, among other topics, biologic effect markers and other early indicators of disease. Because measurement error in covariates is also important, we consider the problems in measurement of common confounders and effect modifiers. Finally, we cite some general methodologic research needs. PMID:8206042

  16. Special Issue: Honey Bee Viruses

    PubMed Central

    Gisder, Sebastian; Genersch, Elke

    2015-01-01

    Pollination of flowering plants is an important ecosystem service provided by wild insect pollinators and managed honey bees. Hence, losses and declines of pollinating insect species threaten human food security and are of major concern not only for apiculture or agriculture but for human society in general. Honey bee colony losses and bumblebee declines have attracted intensive research interest over the last decade and although the problem is far from being solved we now know that viruses are among the key players of many of these bee losses and bumblebee declines. With this special issue on bee viruses we, therefore, aimed to collect high quality original papers reflecting the current state of bee virus research. To this end, we focused on newly discovered viruses (Lake Sinai viruses, bee macula-like virus), or a so far neglected virus species (Apis mellifera filamentous virus), and cutting edge technologies (mass spectrometry, RNAi approach) applied in the field. PMID:26702462

  17. Environmental issues in operations management

    NASA Astrophysics Data System (ADS)

    Muthulingam, Suresh

    Adoption of sustainable operating practices is becoming an increasingly important issue for many organizations in the world today. In this dissertation, I use empirical methods to investigate factors that influence the adoption of sustainable practices and also identify issues that may hinder the adoption of such practices. I explore these issues in two diverse settings. In Chapter 1, I investigate the adoption and non-adoption of energy efficiency initiatives using a database of over 100,000 recommendations provided to more than 13,000 small and medium sized manufacturing firms. Even though the average payback across all recommendations is just over one year, many of these profitable opportunities are not implemented. Using a probit instrumental variable model, I identify four biases in the adoption of these recommendations. First, managers are myopic as they miss out on many profitable opportunities. Second, managers are more influenced by upfront costs than by net benefits when evaluating such initiatives. Third, adoption of a recommendation depends not only on its characteristics but also on the sequence in which the recommendations are presented. Adoption rates are higher for initiatives appearing early in a list of recommendations. Finally, adoption is not influenced by the number of options provided to decision makers. This contributes to the debate about whether or not choice overload occurs. We highlight decision biases previously unobserved in the Operations Management literature using field data rather than experimental data. We draw implications for enhancing adoption of energy efficiency initiatives and for other decision contexts where a collection of process improvement recommendations are made to firms. In Chapter 2, I examine the depth of adoption of the voluntary LEED (Leadership in Energy and Environmental Design) standards for green buildings. Depth of adoption refers to the extent to which the buildings adopt practices related to the standard

  18. Solar thermal electric hybridization issues

    SciTech Connect

    Williams, T A; Bohn, M S; Price, H W

    1994-10-01

    Solar thermal electric systems have an advantage over many other renewable energy technologies because the former use heat as an intermediate energy carrier. This is an advantage as it allows for a relatively simple method of hybridization by using heat from fossil-fuel. Hybridization of solar thermal electric systems is a topic that has recently generated significant interest and controversy and has led to many diverse opinions. This paper discusses many of the issues associated with hybridization of solar thermal electric systems such as what role hybridization should play; how it should be implemented; what are the efficiency, environmental, and cost implications; what solar fraction is appropriate; how hybrid systems compete with solar-only systems; and how hybridization can impact commercialization efforts for solar thermal electric systems.

  19. Simulation Issues for RF Photoinjectors

    SciTech Connect

    Colby, E.; Ivanov, V.; Li, Z.; Limborg, C.; /SLAC

    2005-09-26

    Accurate simulation of radiofrequency photoinjector performance remains a challenge in predicting the performance of future linear colliders and next-generation light sources. Calculated performance consistently and significantly exceeds measured performance. This discrepancy can be traced to two principal sources: measurement uncertainty and unrealistic assumptions and approximations made in the numerical calculations. The dynamics involved make the calculation challenging: electrons are accelerated from rest to relativistic velocities in millimeters. Strong wakefield and space charge effects require that fields be accurately represented on very small distance scales over large volumes. These issues will be discussed, the results of detailed code-to-code comparisons for tracking and particle-in-cell codes will be shown, and recommendations for further tests and improvements will be made.

  20. Psychologic issues in palliative care.

    PubMed

    Gibson, Christopher A; Lichtenthal, Wendy; Berg, Amy; Breitbart, William

    2006-03-01

    As medical science progresses and the life spans of patients with serious illnesses increase, the process that leads to death is becoming more feared than death itself. This fear is particularly intense in technologically advanced cultures with access to advanced medical care. The lives of patients who previously would have died rapidly are now often extended. As a result, images of suffering, such as dying in isolation and experiencing great pain, often are at the forefront of concerns about those struggling with terminal illnesses. This article provides medical practitioners with an overview of the issues and symptoms common in terminal illness, to help them work most effectively with their mental health colleagues. PMID:16487896

  1. Therapeutic cloning: promises and issues

    PubMed Central

    Kfoury, Charlotte

    2007-01-01

    Advances in biotechnology necessitate both an understanding of scientific principles and ethical implications to be clinically applicable in medicine. In this regard, therapeutic cloning offers significant potential in regenerative medicine by circumventing immunorejection, and in the cure of genetic disorders when used in conjunction with gene therapy. Therapeutic cloning in the context of cell replacement therapy holds a huge potential for de novo organogenesis and the permanent treatment of Parkinson’s disease, Duchenne muscular dystrophy, and diabetes mellitus as shown by in vivo studies. Scientific roadblocks impeding advancement in therapeutic cloning are tumorigenicity, epigenetic reprogramming, mitochondrial heteroplasmy, interspecies pathogen transfer, low oocyte availability. Therapeutic cloning is also often tied to ethical considerations concerning the source, destruction and moral status of IVF embryos based on the argument of potential. Legislative and funding issues are also addressed. Future considerations would include a distinction between therapeutic and reproductive cloning in legislative formulations. PMID:18523539

  2. Special Issue: The Silicon Age

    NASA Astrophysics Data System (ADS)

    Kittler, Martin; Yang, Deren

    2006-03-01

    The present issue of physica status solidi (a) contains a collection of articles about different aspects of current silicon research and applications, ranging from basic investigations of mono- and polycrystalline silicon materials and nanostructures to technologies for device fabrication in silicon photovoltaics, micro- and optoelectronics. Guest Editors are Martin Kittler and Deren Yang, the organizers of a recent Sino-German symposium held in Cottbus, Germany, 19-24 September 2005.The cover picture shows four examples of The Silicon Age: the structure of a thin film solar cell on low-cost SSP (silicon sheet from powder) substrate (upper left image) [1], a high-resolution transmission electron microscopy image and diffraction pattern of a single-crystalline Si nanowire (upper right) [2], a carrier lifetime map from an n-type multicrystalline silicon wafer after gettering by a grain boundary (lower left) [3], and a scanning acoustic microscopy image of a bonded 150 mm diameter wafer pair (upper right) [4].

  3. Petroleum 1996 - issues and trends

    SciTech Connect

    1997-09-01

    Increasingly, users of the Energy Information Administration`s petroleum data and analytical reports have expressed an interest in a recurring report that takes a broad view of the petroleum sector. What is sought is some perspective on the complex interrelationships that comprise an industry and markets accounting for 40 percent of the energy consumed in the United States and ranging from the drilling rig in the oil field to the pump at the local gasoline station. This report comprehensively examines historical trends, and selectively focuses on major issues and the events they represent. It analyzes different dimensions of the industry and related markets in terms of how they relate to a common theme, in this case, the volatility in petroleum markets.

  4. Ethical issues involving the internet

    SciTech Connect

    Scott, T.J.; Kallman, E.A.; Lelewer, D.

    1994-12-31

    During the 90`s, the {open_quotes}Information Superhighway{close_quotes} has received widespread publicity. Many campuses have participated in this drive to an information based society by becoming participating nodes on the Internet. As an information provider, the Internet has the potential to change the college experience in many ways, both good and bad. It also poses a number of problems for college students in areas such as privacy, access, and honesty. It provides professors with a dynamic information storage and retrieval tool that offers the opportunity to modernize both curriculum experiences and pedagogical approaches. On some campuses, Internet access and capability has become so important that course modules and whole courses are being built. The panelists will each discuss a different issue involved with making the Internet more integral to the collegiate environment. The first panelist will consider risks and threats that an institution of higher learning must consider as it approaches Internet use will be presented. The steps an institution took to build policies and deal with {open_quotes}inevitable incidents{close_quotes} that will occur as the Internet is opened to full use by both students and faculty. The second panelist will present four computer ethics Each module uses the abundance and dynamism of Internet information to provide challenging {open_quotes}Ethics in the Computer Workplace{close_quotes} experiences that could not easily be done by traditional means. The third panelist will discuss a course module that explores both the positive and negative potential of the Internet. The costs and ease of Internet access, as well as normally available Internet tools, are also presented. This module has been used in a course called {open_quotes}Ethical and Social Issues in Computer Science{close_quotes} and will be used in a general-education course to be offered beginning in 1994-95.

  5. Syndrome Keratitis-Ichtyosis-Deafness (KID) chez un enfant togolais issu d'un mariage consanguin

    PubMed Central

    Kombaté, Koussak; Saka, Bayaki; Landoh, Dadja Essoya; Mouhari-Toure, Abass; Akakpo, Séfako; Belei, Eric; Gnassingbé, Wanguena; Djibril, Mohaman Awalou; Tchangaï-Walla, Kissem; Pitché, Palokinam

    2015-01-01

    Le syndrome KID est une affection génétique rare associant kératite, ichtyose et surdité. Nous rapportons un cas dont la surdité s'est compliquée de mutisme chez un enfant togolais issu d'un mariage consanguin.Il s'agissait d'une fillette de 9 ans admise en dermatologie pour une peau sèche et une kératodermie palmoplantaire évoluant depuis l'enfance, une surdité sévère et un mutisme total évoluant depuis la naissance. Il n'y avait pas d'histoire familiale connue de syndrome KID. Les parents de cet enfant sont des cousins germains. A l'examen, on notait une kératodermie palmoplantaire typique en cuir grossier, une peau sèche ichtyosiforme finement squameuse avec un aspect pachydermique aux genoux et un aspect arlequin aux jambes. L'examen ophtalmologique avait noté une blépharo-conjonctivite, une xérophtalmie, une photophobie et une absence de sourcils. L'examen ORL avait objectivé une hypotrophie des pavillons des oreilles, une surdité sévère et un mutisme total. La particularité de cette observation réside dans la sévérité de l'atteinte auditive qui s'est compliquée de mutisme. Notre enfant étant née de parents consanguins sains, sans histoire familiale de KID, nous pensons que le mode de transmission est probablement sporadique. Une étude moléculaire du cas index et de ses parents, non réalisée à cause de notre plateau technique limité aurait pu le confirmer. PMID:26664520

  6. FOREWORD: Special issue on density

    NASA Astrophysics Data System (ADS)

    Fujii, Kenichi

    2004-04-01

    This special issue on density was undertaken to provide readers with an overview of the present state of the density standards for solids, liquids and gases, as well as the technologies developed for measuring density. This issue also includes topics on the refractive index of gases and on techniques used for calibrating hydrometers so that almost all areas concerned with density standards are covered in four review articles and seven original articles, most of which describe current research being conducted at national metrology institutes (NMIs). A review article was invited from the Ruhr-Universität Bochum to highlight research on the magnetic suspension densimeters. In metrology, the determinations of the volume of a weight and the density of air are of primary importance in establishing a mass standard because the effect of the buoyancy force of air acting on the weight must be known accurately to determine the mass of the weight. A density standard has therefore been developed at many NMIs with a close relation to the mass standard. Hydrostatic weighing is widely used to measure the volume of a solid. The most conventional hydrostatic weighing method uses water as a primary density standard for measuring the volume of a solid. A brief history of the determination of the density of water is therefore given in a review article, as well as a recommended value for the density of water with a specified isotopic abundance. The most modern technique for hydrostatic weighing uses a solid density standard instead of water. For this purpose, optical interferometers for measuring the diameters of silicon spheres have been developed to convert the length standard into the volume standard with a small uncertainty. A review article is therefore dedicated to describing the state-of-the-art optical interferometers developed for silicon spheres. Relative combined standard uncertainties of several parts in 108 have been achieved today for measuring the volume and density of

  7. Comportement rhéologique des systèmes mixtes biopolymères / protéines

    NASA Astrophysics Data System (ADS)

    Rebiha, M.; Moulai-Mostefa, N.; Sadok, A. Hadj; Sabri, N.

    2005-05-01

    Dans ce travail, on s'est intéressé à l'étude des effets du caséinate de sodium et du xanthane sur les propriétés rhéologiques des solutions aqueuses, préparées suivant un plan d'expériences. Les caractéristiques mécaniques obtenues sont traduites par les coefficients du modèle rhéologique de Casson, en l'occurrence la contrainte seuil, τ 0, et la viscosité plastique, η _c. Ainsi, à l'issue de la modélisation en surface de réponses, il apparaît une interaction répulsive à l'échelle structurale entre le caséinate de sodium et le xanthane, traduite par un abaissement considérable de τ 0. Cet baissement de la rigidité peut conduire à une séparation de phases, phénomène conditionné par la viscosité limite de Casson,η _c.

  8. Étude expérimentale et modélisation du comportement en compression des structures nid d'abeille

    NASA Astrophysics Data System (ADS)

    Aminanda, Y.; Castanié, B.; Barrau, J. J.; Thévenet, P.; Guedra-Degeorges, D.

    2002-12-01

    Dans le domaine aéronautique les impacts, même de faible énergie, sur des structures sandwichs à âme nid d'abeille posent des problèmes majeurs en terme de résistance résiduelle. La modélisation de l'endom magement dû à l'impact nécessite la connaissance préliminaire du comportement du nid d'abeille en compression. Des essais réalisés en compression quasi-statique uniforme sur des pains de nids d'abeille en différents matériaux (Nomex, Aluminium et Canson) permettent de décomposer la séquence de formation du pli et les facteurs influents. Ces essais tendent à montrer que la force de compression transite essentiellement par les arêtes verticales du nida. Des essais complémentaires sur un motif d'arête confirme cette analyse. La modélisation issue de cette analyse propose, pour connaître la réponse d'une structure nid d'abeille en compression ou indentation, de déterminer la réponse individuelle d'une arête verticale par un essai de compression uniforme. A partir de la loi expérimentale obtenue, la réponse à l'indentation de la structure sandwich est la superposition de la réponse des arêtes pour la forme d'indenteur et la profondeur d'indentation considérée. Une bonne corrélation essais/calcul est obtenue lors d'essais de validation sur nida Nomex avec diverses formes d'indenteurs. La méthode proposée est générale et peut être étendue à divers matériaux cellulaires.

  9. Children Procedures and Treatment (Fertility Issues)

    MedlinePlus Videos and Cool Tools

    ... do to protect her fertility? What can a boy's cancer doctor do to protect his fertility? How ... families? What are the legal issues for young boys undergoing fertility preservation? What are the legal issues ...

  10. INSTABILITY ISSUES AT THE SNS STORAGE RING

    SciTech Connect

    ZHANG,S.Y.

    1999-06-28

    The impedance and beam instability issues of the SNS storage ring is reviewed, and the effort toward solutions at the BNL is reported. Some unsettled issues are raised, indicating the direction of planned works.

  11. Strategies for Involvement in Wildlife Issues.

    ERIC Educational Resources Information Center

    Kennedy, Carolyn L.; Nye, Donna I.

    1984-01-01

    Highlights a workshop with children focusing on the treatment of controversial issues and guidelines typically provided by school districts or organizations. Activities designed to stimulate discussion on three issues (endangered species, acid rain, and predator control) are included. (BC)

  12. Open Cast Mining: An Environmental Issue.

    ERIC Educational Resources Information Center

    McPartland, Michael

    1993-01-01

    Presents a case study in which students investigate the environmental issue of open cast coal mining. Students examine the issue from different perspectives; interpret the available evidence; draw appropriate conclusions; and evaluate such conclusions. (MDH)

  13. Issues in Midterm Analysis and Forecasting

    EIA Publications

    1999-01-01

    Final issue of this report. Presents a series of eight papers, which cover topics in analysis and modeling that underlie the Annual Energy Outlook 1999, as well as other significant issues in midterm energy markets.

  14. 2 CFR 1.110 - Issuing authorities.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... THE CODE OF FEDERAL REGULATIONS AND SUBTITLE A Introduction to Title 2 of the CFR § 1.110 Issuing authorities. OMB issues this subtitle. Each Federal agency that has a chapter in subtitle B of this...

  15. 2 CFR 1.110 - Issuing authorities.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... THE CODE OF FEDERAL REGULATIONS AND SUBTITLE A Introduction to Title 2 of the CFR § 1.110 Issuing authorities. OMB issues this subtitle. Each Federal agency that has a chapter in subtitle B of this...

  16. 2 CFR 1.110 - Issuing authorities.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... THE CODE OF FEDERAL REGULATIONS AND SUBTITLE A Introduction to Title 2 of the CFR § 1.110 Issuing authorities. OMB issues this subtitle. Each Federal agency that has a chapter in subtitle B of this...

  17. 2 CFR 1.110 - Issuing authorities.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... THE CODE OF FEDERAL REGULATIONS AND SUBTITLE A Introduction to Title 2 of the CFR § 1.110 Issuing authorities. OMB issues this subtitle. Each Federal agency that has a chapter in subtitle B of this...

  18. Ear, Nose & Throat Issues & Down Syndrome

    MedlinePlus

    ... Throat Issues & Down Syndrome Ear, Nose & Throat Issues & Down Syndrome Ear, nose, and throat (ENT) problems are common ... What ENT Problems Are Common in Children With Down Syndrome? External Ear Canal Stenosis Stenotic ear canals (narrow ...

  19. FOREWORD: Special issue on density

    NASA Astrophysics Data System (ADS)

    Fujii, Kenichi

    2004-04-01

    This special issue on density was undertaken to provide readers with an overview of the present state of the density standards for solids, liquids and gases, as well as the technologies developed for measuring density. This issue also includes topics on the refractive index of gases and on techniques used for calibrating hydrometers so that almost all areas concerned with density standards are covered in four review articles and seven original articles, most of which describe current research being conducted at national metrology institutes (NMIs). A review article was invited from the Ruhr-Universität Bochum to highlight research on the magnetic suspension densimeters. In metrology, the determinations of the volume of a weight and the density of air are of primary importance in establishing a mass standard because the effect of the buoyancy force of air acting on the weight must be known accurately to determine the mass of the weight. A density standard has therefore been developed at many NMIs with a close relation to the mass standard. Hydrostatic weighing is widely used to measure the volume of a solid. The most conventional hydrostatic weighing method uses water as a primary density standard for measuring the volume of a solid. A brief history of the determination of the density of water is therefore given in a review article, as well as a recommended value for the density of water with a specified isotopic abundance. The most modern technique for hydrostatic weighing uses a solid density standard instead of water. For this purpose, optical interferometers for measuring the diameters of silicon spheres have been developed to convert the length standard into the volume standard with a small uncertainty. A review article is therefore dedicated to describing the state-of-the-art optical interferometers developed for silicon spheres. Relative combined standard uncertainties of several parts in 108 have been achieved today for measuring the volume and density of

  20. Modélisation du bruit des jets turbulents libres et subsoniques à température ambiante

    NASA Astrophysics Data System (ADS)

    Béchara, W.; Lafon, P.; Candel, S. M.

    1993-03-01

    Based on the theoretical model of Goldstein for a round free jet, we establish analytical expressions (G_a model) for the noise radiation from a turbulent jet, depending on the local statistical properties of the flow. These characteristics are calculated by solving the Reynolds average Navier-Stokes equations with a numerical code based on a K - \\varepsilon turbulence closure model. A comparison between the numerical results and the experimental data for a simple jet and two coaxial jets shows that this model correctly predicts the evolution of the acoustic radiation. The G_a model developed in the case of axisymmetric turbulence superimposed over a mean flow is found to be more suitable than the Ribner model associated to an isotropic turbulence. A comparison between differents models issued from Lighthill theory, shows that the G_a model yields the best directivity of the acoustic intensity at high jet exit velocities. À partir du modèle théorique proposé initialement par Goldstein pour un jet libre turbulent circulaire, on établit des expressions analytiques (modèle G_a) permettant le calcul du bruit émis à partir des grandeurs statistiques locales du jet turbulent. Ces grandeurs sont estimées par résolution des équations de Navier-Stokes moyennées à l'aide d'un code numérique de turbulence utilisant un modèle de fermeture de type K - \\varepsilon. La comparaison entre les résultats numériques obtenus et les données expérimentales, pour un jet simple et deux jets coaxiaux, montre que ce modèle estime correctement l'évolution des grandeurs acoustiques étudiées. Les calculs indiquent que le modèle G_a développé pour une turbulence axisymétrique convectée par un écoulement moyen est mieux adapté que celui de Ribner associé à une turbulence isotrope. De plus, une comparaison entre différents modèles basés sur la théorie de Lighthill indique que le modèle G_a donne la meilleure directivité de l'intensité acoustique aux