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  1. Un nouveau film conducteur poly(aminoquinone) pour le stockage de l'énergie

    NASA Astrophysics Data System (ADS)

    Piro, B.; Pham, M. C.; Bazzaoui, E. A.; Lacroix, J.-C.; Lacaze, P.-C.; Novak, P.; Hass, O.

    1998-06-01

    The electrooxidation of 5-amino-1,4-naphthoquinone (ANQ) in acetonitrile leads to conducting (10-1 S.cm-1) functionalized polymer films of polyaniline- type bearing one quinone group per ANQ moiety, electroactive in organic or aqueous solvents. The polymer exchanges cations during the redox process of quinones and is therefore interesting for lithium ions batteries devices. The measured specific charge is particularly hight with about 290 Ah/kg. L'oxydation électrochimique du 5-amino-1,4-naphtoquinone (ANQ) dans l'acétonitrile conduit à la formation de films conducteurs (10-1 S.cm-1) fonctionnalisés de structure type polyaniline portant une fonction quinone par motif ANQ, qui sont électroactifs en milieu aqueux comme en milieu organique. Le polymère échange des cations au cours du processus rédox des quinones et est ainsi intéressant pour les applications dans les accumulateurs au lithium. La charge spécifique mesurée de ce polymère est particulièrement élevée avec environ 290 Ah/kg.

  2. Evaluation du potentiel energetique de la biomasse forestiere au Nouveau-Brunswick pour la production de chaleur et d'electricite en cogeneration

    NASA Astrophysics Data System (ADS)

    Bouchard, Stephane

    Ce travail de recherche porte sur l'évaluation du potentiel énergétique de la biomasse forestière au Nouveau-Brunswick. Plus précisément, l'étude cherche à quantifier les puissances thermique et électrique pouvant être générées à partir de cette biomasse lorsque celle-ci est utilisée comme source de combustible dans des centrales de cogénération réparties sur l'ensemble du territoire néo-brunswickois. Dans un premier temps, l'identification de sites pouvant potentiellement accueillir une centrale de cogénération à la biomasse est effectuée à partir de certains critères et lignes directrices. Au total, 17 sites sont retenus. Par la suite, l'aire d'approvisionnement en biomasse forestière de chacun des sites choisis est délimitée selon la distance de transport la plus courte de la biomasse. Dans le même ordre d'idées, des zones de transport sont établies afin de déterminer la distribution spatiale de la biomasse forestière à l'intérieur de chacune des aires d'approvisionnement. En second lieu, les quantités de biomasse forestière pouvant être récoltées annuellement de façon durable sont estimées selon différentes méthodes adaptées aux propriétaires des terres. La biomasse forestière disponible est ensuite allouée aux aires d'approvisionnement selon sa distribution spatiale. En dernier lieu, lorsque les quantités de biomasse forestière disponible annuellement pour chacune des aires d'approvisionnement sont déterminées, les quantités d'énergie (Joules) ainsi que les puissances thermiques (Wth) et électriques (We) pouvant être générées à partir de ces quantités de biomasse sont estimées à l'aide de modèles énergétiques. Les résultats obtenus démontrent, qu'au Nouveau-Brunswick, environ 15.5 million de tonnes métriques vertes de biomasse forestière sont potentiellement disponibles annuellement de façon durable. Répartie selon les trois principales catégories de biomasse forestière, les résultats d

  3. Rachianesthésie pour césarienne: facteurs de risque d'apparition de scores d'Apgar inférieur à 7 chez les nouveau-nés malgaches

    PubMed Central

    Rasolonjatovo, Tsiorintsoa Yvonne; Ravololonirina, Bako Minosoa Gilberthe; Randriamanantany, Zely Arivelo; Raveloson, Nasolotsiry Enintsoa

    2014-01-01

    Introduction La rachianesthésie est courante en obstétrique. L'hypotension artérielle maternelle apparaît dans 50-80%. Elle affecte l’équilibre acido-basique et l’état clinique du nouveau-né. Pour y remédier, l'usage de vasoconstricteurs est incontournable. L’éphédrine était de loin de premier choix en obstétrique. Dans les pays développés, elle est co-administrée avec la phényléphrine. A Madagascar, seule l’éphédrine reste disponible. Notre étude consiste à déterminer les facteurs de risque d'apparition du score d'Apgar inférieur à 7 chez les nouveau-nés. Méthodes Une étude rétrospective transversale, analytique, était effectuée à la Maternité de Befelatanana, Antananarivo Madagascar (Décembre 2010-Décembre 2011). Nous avons inclus 344 césariennes opérées sous rachianesthésie. Le critère principal de jugement était l'observation de score d'Apgar inférieur ou égal à 7 à la première minute. Les données étaient analysées sur logiciel Epi Info version 6.04 (IC à 95%, p bilatéral < 0.05). Résultats Le score d'Apgar était inférieur ou égal à 7 dans 42%. Les facteurs de risque retrouvés étaient la césarienne en urgence, la dose d’éphédrine dépassant 30mg ainsi que la baisse de la pression artérielle diastolique supérieure à 10% par rapport à sa valeur initiale (p respectif <<0.05). Conclusion La précarité de l’état clinique des nouveau-nés à la naissance est multifactorielle. La baisse de la pression artérielle diastolique associée à une dose élevée d’éphédrine est néfaste. De plus, l'augmentation de la catécholaminémie maternelle puis fœtale l'aggrave. PMID:25821536

  4. Elegant Art Nouveau

    ERIC Educational Resources Information Center

    Fontes, Kris

    2005-01-01

    Gustav Klimt (1862-1918), a Viennese painter, was the founder of the Vienna Secession, the Austrian Art Nouveau movement. Art Nouveau is characterised by flowing lines and flat designs based on organic structures. This style is found in the symbolic aspect of Klimt's later work, and in the works of other artists of the late 1890s and early 1900s…

  5. Les transfusions de globules rouges chez le nouveau-né : Des directives révisées

    PubMed Central

    2002-01-01

    En général, depuis dix ans, les professionnels de la santé qui soignent des nouveau-nés à haut risque dans des unités de soins intensifs néonatals sont plus restrictifs dans leur utilisation de transfusions de globules rouges. Le présent énoncé est conçu pour ceux qui soignent des nouveau-nés à haut risque (des prématurés aux nouveau-nés d’un mois). Il vise à fournir des directives pour réduire l’incidence d’anémie chez les nourrissons prématurés et à terme, à repérer des stratégies pour réduire le besoin de transfusions de globules rouges et à limiter l’exposition à des donneurs au sein de cette population. Des recommandations portant sur les transfusions de globules rouges sont incluses.

  6. L’éléphantiasis vulvo-clitoridien: à propos d'un nouveau cas

    PubMed Central

    Sine, Babacar; Bagayogo, Ndeye Aissatou; Thiam, Amath; Sarr, Alioune; Sow, Yaya; Fall, Boubacar; Zakou, Abdou Razak Hamidou; Faye, Samba Thiapato; Diao, Babacar; Fall, Papa Ahmed; Ndoye, Alain khassim; Ba, Mamadou

    2015-01-01

    L’éléphantiasis vulvo-clitoridien d'origine filarienne est une affection très rare. Nous rapportons un nouveau cas chez une femme de 33 ans suivie dans un service de Maladies Infectieuses pour filariose lymphatique. Elle avait une masse vulvo-clitoridienne qui évoluait depuis plus de 10 ans. Une résection clitoridienne et une plastie vulvaire a été réalisée. Les résultats fonctionnels et esthétiques étaient satisfaisants. PMID:26889314

  7. [Art nouveau: pharmacy shops in Nancy].

    PubMed

    Leclerc, Florence; Labrude, Pierre

    2002-01-01

    At the beginning of the 20th century, an important artistic activity develops in Nancy. The "Ecole de Nancy" transforms a provincial city into one of the metropolis of "Art Nouveau". The pharmacists participate at the activity of their town and eight of them choose the new style for their pharmacy. In 1902, Rosfelder is the first to modify his shop, and later, Jacques, Delidon, Mouzin, Godfrin brothers, Monal and Fandre, before, during and after the First World War, have a same step. For the ornament, the artists use plants derived from local medicinal flora. "Art Nouveau", adept of curves, appears to be ideal to symbolize vegetable kingdom. In these pharmacy shops, fine arts join materia medica.

  8. Some Aspects of Art Nouveau in Arts and Letters.

    ERIC Educational Resources Information Center

    Vajda, Gyorgy M.

    1980-01-01

    Examines the background to and the stylistic characteristics of the Art Nouveau movement in its literary and artistic manifestations, emphasizing its nature as a synthesis of various contemporary, artistic, and intellectual trends. (SJL)

  9. Task Group on Computer/Communication Protocols for Bibliographic Data Exchange. Interim Report = Groupe de Travail sur les Protocoles de Communication/Ordinateurs pour l'Exchange de Donnees Bibliographiques. Rapport d'Etape. May 1983.

    ERIC Educational Resources Information Center

    Canadian Network Papers, 1983

    1983-01-01

    This preliminary report describes the work to date of the Task Group on Computer/Communication protocols for Bibliographic Data Interchange, which was formed in 1980 to develop a set of protocol standards to facilitate communication between heterogeneous library and information systems within the framework of Open Systems Interconnection (OSI). A…

  10. MONOX: un nouveau spectrogoniomètre pour le rayonnement X mou et X-UV

    NASA Astrophysics Data System (ADS)

    André, J.-M.; Avila, A.; Barchewitz, R.; Benbalagh, R.; Delaunay, R.; Druart, D.; Fontaine, M.-F.; Ringuenet, H.

    2004-11-01

    Un spectrogoniomètre de laboratoire utilisant comme source un tube émettant des radiations caractéristiques dans le domaine X mou et X-UV a été développé au Laboratoire de Chimie Physique (CNRS/UPMC) dans le cadre de l'Action Coordonnée Optique du CNRS. L'appareil comprend un monochromateur de type “double-cristaux" équipé de miroirs multicouches ou de cristaux de grande période et un goniomètre θ-2θ . Il permet des mesures de pouvoir réflecteur et de diffusion de dispositifs optiques, en particulier de miroirs et réseaux multicouches. Dans un futur proche il sera aussi destiné à la caractérisation de nouvelles sources et de détecteurs X-UV. L'appareil peut aussi être utilisé comme spectromètre à cristal plan si l'anode est remplacée par l'échantillon à analyser. Différents exemples des possibilités offertes par cet instrument opérant en mode “réflectométrie" ou en mode “spectrométrie" sont présentés.

  11. Utilisation de nanoparticules d'oxyde de fer comme nouveau traitement potentiel pour l'atherosclerose

    NASA Astrophysics Data System (ADS)

    Ruellan, Arthur

    Atherosclerosis is a worldwide epidemic related to several factors including lifestyle and genetic predisposition. There are two main approaches to treating atherosclerosis: one that aims lowering levels of low-density lipoprotein (LDL) in the bloodstream to avoid or decrease genesis of atheroma plaques, and the other approach aims to remove atheroma plaques through surgical techniques such as by-pass surgery or stent implantation. As these two approaches are inadapted for outpatients or those who present hypercholesterolemia, it is urgent to develop new drugs and technologies to address these situations. A conventional weapon for lowering the LDL level from bloodstream is the plasmapheresis which it requires long daily hospitalization time and therefore impacts the quality of life of patients. Therefore, this thesis aims to present the application of superparamagnetic iron oxide nanoparticles (SPIONs) as vectors to decrease the levels of free-LDL in the bloodstream. Indeed we present the proof of concept of a potential new treatment for atherosclerosis using the functionalized SPIONs targeting LDL. We have evaluated the biocompatibility of those SPIONs through in vitro cytotoxicity and hemocompatibility tests. Our ability to move these SPIONs, uni-directionally, under a magnetic field, demonstrates the feasibility of using them in an ex-vivo blood circulation system, containing a magnetic trap to gather them once they have fastened to the LDL present in the blood. By ex vivo tests with hypercholesterolemic rabbit blood plasma, we have found that each interaction of SPIONs, at 0.5 mg/mL, decreases the concentration of LDL by at least 34%.

  12. Maladie de kaposi classique avec atteinte surrénalienne: un nouveau cas

    PubMed Central

    Bouzidi, Hanae; Gallouj, Salim; Krich, Sanae; Mernissi, Fatima Zahra

    2014-01-01

    La maladie de kaposi est une pathologie connue généralement dans sa forme épidémique associée au sida ou celle endémique présente dans l'Afrique subsaharienne. La forme classique de cette maladie ou dite également méditerranéenne n'est pas bien connue étant assez rare. Elle touche les hommes âgés HIV séronégatifs originaires de l'Europe centrale, l'Europe de l'Est et les méditerranéens. Elle se manifeste essentiellement par une atteinte cutanée, éventuellement muqueuse mais l'atteinte viscérale reste moins fréquente, dominée par l'atteinte osseuse, pulmonaire et gastrique. La localisation surrénalienne est inhabituelle et très rare. Nous rapportons ce nouveau cas pour mettre le point sur cette pathologie rare et signaler cette localisation atypique. PMID:25170378

  13. Un nouveau cristal laser largement accordable le BOYS dopé à l'ytterbium

    NASA Astrophysics Data System (ADS)

    Chénais, S.; Druon, F.; Balembois, F.; Georges, P.; Gaumé, R.; Aka, G.; Viana, B.; Vivien, D.

    2002-06-01

    Nous avons étudié les performances laser en pompage par diode de puissance d'un nouveau cristal : le Sr3Y(BO3)3 (acronyme : BOYS), dopé à l'ytterbium. Son spectre d'émission particulièrement large en fait un matériau particulièrement prometteur pour la réalisation de lasers femtosecondes directement pompés par diode. Ses performances ont été comparées à celles d'un verre phosphate ainsi qu'à celles du cristal d' Yb:GdCOB dans les mêmes conditions. Nous démontrons que, tant du point de vue de l'efficacité laser que de la tenue aux fortes puissances, GdCOB et BOYS sont supérieurs au verre ; le BOYS est de surcroît plus accordable (sur 50 nm), mais son comportement thermique limite a priori son usage à des puissances de pompe modérées.

  14. Developpement d'outils quantitatifs pour le suivi par imagerie TEP/TDM de la reponse a la chimiotherapie et de sa toxicite

    NASA Astrophysics Data System (ADS)

    Croteau, Etienne

    L'objectif de ce projet de doctorat est de developper des outils quantitatifs pour le suivi des traitements de chimiotherapie pour le cancer du sein et de leurs effets cardiotoxiques a l'aide de l'imagerie TEP dynamique. L'analyse cinetique en TEP dynamique permet l'evaluation de parametres biologiques in vivo. Cette analyse peut etre utilise pour caracteriser la reponse tumorale a la chimiotherapie et les effets secondaires nefastes qui peuvent en resulter. Le premier article de cette these decrit la mise au point des techniques d'analyse cinetique qui utilisent la fonction d'entree d'un radiotraceur derive de l'image dynamique. Des corrections de contamination radioactive externe (epanchement) et de l'effet de volume partiel ont ete necessaires pour standardiser l'analyse cinetique et la rendre quantitative. Le deuxieme article porte sur l'evaluation d'un nouveau radiotraceur myocardique. Le 11C-acetoacetate, un nouveau radiotraceur base sur un corps cetonique, a ete compare au 11C-acetate, couramment utilise en imagerie cardiaque TEP. L'utilisation de 3H-acetate et 14C-acetoacetate ont permis d'elucider la cinetique de ces traceurs depuis la fonction d'entree et la captation par les mitochondries cardiaques qui reflete la consommation en oxygene, jusqu'a la liberation de leurs principaux metabolites reciproques (3H20 et 14CO2). Le troisieme et dernier article de cette these presente l'integration d'un modele qui evalue la reserve cardiaque de perfusion et de consommation en oxygene. Un modele de cardiomyopathie a ete etabli a l'aide d'un agent chimiotherapeutique contre le cancer du sein, la doxorubicine, reconnu comme etant cardiotoxique. Un protocole de repos/effort a permis d'evaluer la capacite d'augmentation de perfusion et de consommation en oxygene par le coeur. La demonstration d'une reserve cardiaque reduite caracterise la cardiotoxicite. La derniere contribution de cette these porte sur la mise au point de methodes peu invasives pour mesurer la

  15. IBA of iridescent Art Nouveau glass - comparative studies

    NASA Astrophysics Data System (ADS)

    Mäder, M.; Jembrih-Simbürger, D.; Neelmeijer, C.; Schreiner, Manfred

    2005-09-01

    Simultaneous PIXE, PIGE, and RBS in air were employed to characterise the surface structure of iridescent Art Nouveau glass artefacts produced around 1900 by Tiffany, USA and Loetz, Austria. Using PIXE and PIGE, the chemical composition of the bulk glass and the overlays was determined in a non-destructive manner. Furthermore, the combination of PIXE and RBS enabled the layer structure of the analysed glasses (bulk, overlays, and iridescent layers) and the thicknesses of the thin layers in the near-surface domain to be determined. The measurement and evaluation procedure is demonstrated on blue iridescent glass fragments of Tiffany and Loetz by way of example. The initial results showing similarities but also differences in the layered glass structure of Tiffany and Loetz objects are presented.

  16. Evaluation d'une approche pedagogique respectant les facons d'apprendre des filles en sciences et en TIC en 9e annee au Nouveau-Brunswick

    NASA Astrophysics Data System (ADS)

    Lirette-Pitre, Nicole T.

    2009-07-01

    La reussite scolaire des filles les amene de plus en plus a poursuivre une formation postsecondaire et a exercer des professions qui demandent un haut niveau de connaissances et d'expertise scientifique. Toutefois, les filles demeurent toujours tres peu nombreuses a envisager une carriere en sciences (chimie et physique), en ingenierie ou en TIC (technologie d'information et de la communication), soit une carriere reliee a la nouvelle economie. Pour plusieurs filles, les sciences et les TIC ne sont pas des matieres scolaires qu'elles trouvent interessantes meme si elles y reussissent tres bien. Ces filles admettent que leurs experiences d'apprentissage en sciences et en TIC ne leur ont pas permis de developper un interet ni de se sentir confiante en leurs habiletes a reussir dans ces matieres. Par consequent, peu de filles choisissent de poursuivre leurs etudes postsecondaires dans ces disciplines. La theorie sociocognitive du choix carriere a ete choisie comme modele theorique pour mieux comprendre quelles variables entrent en jeu lorsque les filles choisissent leur carriere. Notre etude a pour objet la conception et l'evaluation de l'efficacite d'un materiel pedagogique concu specifiquement pour ameliorer les experiences d'apprentissage en sciences et en TIC des filles de 9e annee au Nouveau-Brunswick. L'approche pedagogique privilegiee dans notre materiel a mis en oeuvre des strategies pedagogiques issues des meilleures pratiques que nous avons identifiees et qui visaient particulierement l'augmentation du sentiment d'auto-efficacite et de l'interet des filles pour ces disciplines. Ce materiel disponible par Internet a l'adresse http://www.umoncton.ca/lirettn/scientic est directement en lien avec le programme d'etudes en sciences de la nature de 9e annee du Nouveau-Brunswick. L'evaluation de l'efficacite de notre materiel pedagogique a ete faite selon deux grandes etapes methodologiques: 1) l'evaluation de l'utilisabilite et de la convivialite du materiel et 2

  17. Therapeutic drug monitoring of psychotropic drugs. TDM "nouveau".

    PubMed

    Bengtsson, Finn

    2004-04-01

    TDM applied in psychiatry dates back several decades. The reason for this is that, after the advent of modern clinical psychopharmacology around the middle of the past century, an insight came to common knowledge about the existence of (1) a large interindividual pharmacokinetic (PK) variability for virtually all psychoactive drugs and (2) a worse clinical efficacy not only in inadequate drug concentrations but also in excessively high concentrations. From this concept, the definition of a therapeutic concentration "window" was evidenced for a substantial number of, primarily, antidepressant drugs. However, with the further extensive development of the clinically available pharmacopoeia of psychoactive drugs from the later 1980s until today, the concept of less toxic compounds than before has commonly been launched in the marketing strategies for these newer drugs. This concept also led to the idea that TDM was no longer necessary for the newer types of psychoactive drugs, a position backed up by difficulties in unraveling concentration-effect relationships generally for these drugs in clinical trials. The present survey summarizes the background history for TDM in psychiatry and makes a critical appraisal of why a "lack" of definition of concentration-effect relationships for newer psychoactive drugs is now common. This survey also provides the reader with a novel concept challenging ambient TDM strategies (referred to as TDM "traditionelle") in psychiatry by forwarding a theoretical model called TDM "nouveau." In this model both inter- and intraindividual (over time) PK variation is suggested to be used for dose optimization by TDM in a naturalistic clinical setting. The previous concept of a simple, common concentration "window" existing for all such drugs is questioned by promotion of the use of available PK data merely as "guiding principles" rather than as "reference values" when interpreting the TDM outcome in individual cases.

  18. Transfert radiatif numerique pour un code SPH

    NASA Astrophysics Data System (ADS)

    Viau, Joseph Edmour Serge

    2001-03-01

    Le besoin de reproduire la formation d'etoiles par simulations numeriques s'est fait de plus en plus present au cours des 30 dernieres annees. Depuis Larson (1968), les codes de simulations n'ont eu de cesse de s'ameliorer. D'ailleurs, en 1977, Lucy introduit une autre methode de calcul venant concurrencer la methode par grille. Cette nouvelle facon de calculer utilise en effet des points a defaut d'utiliser des grilles, ce qui est une bien meilleure adaptation aux calculs d'un effondrement gravitationnel. Il restait cependant le probleme d'ajouter le transfert radiatif a un tel code. Malgre la proposition de Brookshaw (1984), qui nous montre une formule permettant d'ajouter le transfert radiatif sous la forme SPH tout en evitant la double sommation genante qu'elle implique, aucun code SPH a ce jour ne contient un transfert radiatif satisfaisant. Cette these presente pour la premiere fois un code SPH muni d'un transfert radiatif adequat. Toutes les difficultes ont pu etre surmontees afin d'obtenir finalement le transfert radiatif "vrai" qui survient dans l'effondrement d'un nuage moleculaire. Pour verifier l'integrite de nos resultats, une comparaison avec le nonisothermal test case de Boss & Myhill (1993) nous revele un resultat fort satisfaisant. En plus de suivre fidelement la courbe de l'evolution de la temperature centrale en fonction de la densite centrale, notre code est exempt de toutes les anomalies rencontrees par les codes par grille. Le test du cas de la conduction thermique nous a lui aussi servit a verifier la fiabilite de notre code. La aussi les resultats sont fort satisfaisants. Faisant suite a ces resultats, le code fut utilise dans deux situations reelles de recherche, ce qui nous a permis de demontrer les nombreuses possibilites que nous donne notre nouveau code. Dans un premier temps, nous avons tudie le comportement de la temperature dans un disque d'accretion durant son evolution. Ensuite nous avons refait en partie une experience de Bonnell

  19. Un nouveau point de départ pour l'histoire de l'Atlantique central

    NASA Astrophysics Data System (ADS)

    Sahabi, Mohamed; Aslanian, Daniel; Olivet, Jean-Louis

    2004-09-01

    The first oceanic crust in the central Atlantic is usually thought to have a Middle Jurassic age. The new interpretation of the two key parameters, the African homologue of the East Coast Magnetic Anomaly and the situation of the Triassic salt basin of Morocco and Novia Scotia, shows that this age was underestimated by about 20 Ma. In our kinematic reconstruction, the first oceanic crust begins at the Late Sinemurian. This difference in age is crucial for the evolution of those margins and we discuss here its consequences. To cite this article: M. Sahabi et al., C. R. Geoscience 336 (2004).

  20. Mise à jour sur le nouveau vaccin 9-valent pour la prévention du virus du papillome humain

    PubMed Central

    Yang, David Yi; Bracken, Keyna

    2016-01-01

    Résumé Objectif Informer les médecins de famille quant à l’efficacité, à l’innocuité, aux effets sur la santé publique et à la rentabilité du vaccin 9-valent contre le virus du papillome humain (VPH). Qualité des données Des articles pertinents publiés dans PubMed jusqu’en mai 2015 ont été examinés et analysés. La plupart des données citées sont de niveau I (essais randomisés et contrôlés et méta-analyses) ou de niveau II (études transversales, cas-témoins et épidémiologiques). Des rapports et recommandations du gouvernement sont aussi cités en référence. Message principal Le vaccin 9-valent contre le VPH, qui offre une protection contre les types 6, 11, 16, 18, 31, 33, 45, 52 et 58 du VPH, est sûr et efficace et réduira encore plus l’incidence des infections à VPH, de même que les cas de cancer lié au VPH. Il peut également protéger indirectement les personnes non immunisées par l’entremise du phénomène d’immunité collective. Un programme d’immunisation efficace peut prévenir la plupart des cancers du col de l’utérus. Les analyses montrent que la rentabilité du vaccin 9-valent chez les femmes est comparable à celle du vaccin quadrivalent original contre le VPH (qui protège contre les types 6, 11, 16 et 18 du VPH) en usage à l’heure actuelle. Toutefois, il faut investiguer plus en profondeur l’utilité d’immuniser les garçons avec le vaccin 9-valent contre le VPH. Conclusion en plus d’être sûr, le vaccin 9-valent protège mieux contre le VPH que le vaccin quadrivalent. Une analyse coûtefficacité en favorise l’emploi, du moins chez les adolescentes. Ainsi, les médecins devraient recommander le vaccin 9-valent à leurs patients plutôt que le vaccin quadrivalent contre le VPH.

  1. Transfert et transport des nouveau-nés en situation de détresse vitale à Yaoundé, Cameroun: analyse situationnelle dans un hôpital de référence

    PubMed Central

    Nlend, Anne Esther Njom; Zeudja, Cécile; Nsoa, Lydie

    2016-01-01

    Introduction Notre objectif était de décrire les caractéristiques du transfert des nouveau-nés en situation de détresse vitale vers le Centre Hospitalier d’ESSOS à Yaoundé, Cameroun. Méthodes Nous avons réalisé une étude transversale prospective d’Octobre 2014 à Janvier 2015. La collecte des données était faite à l’aide d’un questionnaire court auprès de l’opérateur du transfert. Principaux paramètres: moyen de transport, motif du transfert, délai du transfert, nombre de décours (itinéraire avant l’admission) prévalence de l’hypothermie, taux de mortalité néonatale. Résultats Nous avons enregistré 73 transferts durant la période Près de 1/5 (22%) étaient nés au sein du district de santé de la structure de référence. Les nouveau-nés référés venaient de structures tertiaires dans 24/73 (33%). Le principal motif de transfert était la grande prématurité (40%) suivi de l’asphyxie néonatale (26%). Le transfert était médicalisé dans 5/73 (7%) des cas et infirmier interhospitalier dans 10/73 (13,6%) des cas. Le délai moyen de transfert était de 17 heures, 60% avaient été transférés dans les 6 premières heures de vie et 22% (16/73) dans les deux heures. Pour plus de la moitié des nouveau-nés, un détour dans une autre structure avait été réalisé avant l’admission. L’hypothermie (température centrale inférieure à 36°) à l’arrivée était notée dans 20% des cas. 15/73(20,5%) des nouveau-nés transférés sont décédés. la température moyenne à l’arrivée des nouveau-nés décédés étaient de 35°5C vs 37°C chez les non-décédés (p=0,006). Le pourcentage de nouveau-nés ayant subi plus de 2 détours était de 57% chez les décédés versus 30% chez les non-décédés (p=0,02). Conclusion A Yaoundé, les conditions de transferts des nouveau-nés précaires grèvent le pronostic néonatal immédiat à cause d’un itinéraire erratique qui majore le risque d’hypothermie et de d

  2. Evaluating the reliability of a novel neck-strength assessment protocol for healthy adults using self-generated resistance with a hand-held dynamometer.

    PubMed

    Versteegh, Theo; Beaudet, Danielle; Greenbaum, Marla; Hellyer, Leah; Tritton, Amanda; Walton, Dave

    2015-01-01

    Objectif : Évaluer la convergence test-retest intra et intersessionnelle d'un nouveau protocole d'évaluation de la force du cou au moyen d'un dynamomètre portatif. Contexte: Une recension des écrits a révélé un manque de protocoles d'évaluation de la force du cou à la fois portables et fiables. La dynamométrie manuelle est une méthode portable et peu coûteuse d'évaluation de la force musculaire, mais elle n'est pas utilisée couramment pour évaluer la force du cou. Méthodes : On a utilisé un dynamomètre portatif pour évaluer la force du cou chez 30 participants en bonne santé. On a mesuré la force maximale en flexion cervicale, extension, flexion latérale, flexion latérale avec rotation et rotation pure en utilisant la main ipsilatérale pour appliquer une résistance isométrique pendant 3 secondes. On a pris trois mesures en 6 à 8 jours. Résultats : Les coefficients de corrélation intraclasse (CCI) de test-retest ont révélé une grande fiabilité variant de 0,94 à 0,97 dans le cas de toutes les directions vérifiées de l'essai 1 à l'essai 2 (fiabilité intrasessionnelle) [CCI (2,1), absolu]. Les valeurs CCI ont démontré une fiabilité intersessionnelle variant de bonne à élevée, variant de 0,87 à 0,95 dans le cas de toutes les directions mises à l'épreuve de l'essai 1 à l'essai 3 [CCI (2,1), absolu]. Conclusion : Les résultats indiquent qu'il est possible d'appliquer le protocole d'évaluation de la force du cou et du quadrant supérieur par les cinq positions d'essai en utilisant la dynamométrie manuelle, et qu'il produit une fiabilité variant de bonne à élevée.

  3. 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.

  4. Les conjonctivites néonatales dans le canton de Glidji au Sud du Togo: une étude transversale à propos de 159 nouveau-nés

    PubMed Central

    Kokou, Vonor; Nidain, Maneh; Kassoula, Nononsaa Batomguela; Kwassi, Fiaty- Amenouvor; Meba, Banla; Patrice, Balo Komi

    2016-01-01

    Introduction Le but de l’étude était décrire les aspects épidémiologiques des conjonctivites néonatales dans le canton de Glidji au Sud du Togo. Methodes Nous avons mené une étude transversale dans les 4 Unités Sanitaires Périphériques du canton de Glidji du 19 Mars au 13 Mai 2009 soit 8 semaines. Tous les nouveau-nés ont été inclus et la conjonctivite néonatale était définie par la présence chez un nouveau-né d'au moins deux des signes suivants: hyperhémie conjonctivale, œdème palpébral, chémosis, sécrétions purulentes, larmoiement. Les paramètres étudiés étaient l’âge, le sexe, les facteurs de risque, les antécédents, la présence ou non de conjonctivite, les germes en causes et l’évolution sous traitement. Resultats Sur la période, 159 nouveau-nés ont été examinés. L’âge moyen était de 10,9 jours avec des extrêmes de 0 à 28 jours. Il y avait 80 garçons pour 79 filles soit un sex-ratio de 1,01. Sur les 159 nouveau-nés, 7 cas de conjonctivite ont été diagnostiqués soit une prévalence de 4,4%. Les facteurs de risque identifiés étaient l'accouchement par voie basse et la présence d'IST chez la mère pendant la grossesse. Sur les 7 cas de conjonctivite, l'examen cytobactériologique a permis d'isoler le staphylococcus aureus dans 2 cas. L’évolution des cas de conjonctivite sous traitement était favorable avec régression des signes dès le 3è jour. Conclusion Les conjonctivites néonatales avaient une prévalence de 4,4% dans le canton de Glidji au sud du Togo et le staphylocoque doré était le germe en cause. Leur prévention passe par un bon suivi lors de la consultation prénatale et l'instillation de collyre antibiotique à la naissance PMID:27642383

  5. Facteurs associes aux décès des nouveau-nés suspects d'infections bactériennes au Centre Hospitalier Universitaire Pédiatrique Charles de Gaulle de Ouagadougou, Burkina Faso

    PubMed Central

    Ouédraogo, Solange Odile Yugbaré; Méda, Désiré; Dao, Lassina; Kouéta, Fla; Ludovic, Kam; Traoré, Ramata Ouédraogo; Yé, Diarra

    2016-01-01

    Introduction Il s'agit d’étudier les facteurs associés au décès des nouveau-nés suspects d'infections bactériennes au centre hospitalier universitaire pédiatrique Charles de gaulle de Ouagadougou. Méthodes Nous avons mené une étude de cohorte rétrospective du 1er janvier 2009 au 31 décembre 2012 au centre hospitalier universitaire pédiatrique Charles de gaulle de Ouagadougou. Résultats La fréquence hospitalière des nouveau-nés suspects d'infection bactérienne sur était de 62,8%. L’âge médian à l'admission était de trois jours et le sex ratio de 1,1. Parmi ces nouveau-nés, 351 (22,8%) ont bénéficié d'au moins un examen bactériologique, et 28 (8%) ont eu la confirmation de l'origine bactérienne de l'infection. Au cours de la période néonatale, 138(9%) nouveau-nés sont décédés avec un taux de létalité précoce et tardive respectivement de 9,6% et 8,3%. Le lieu de résidence, le mode d'admission, le nombre de consultations prénatales, le poids de naissance, la présence de signes de gravité et l'année d'admission étaient les facteurs de risque indépendants associés au décès. Conclusion Les facteurs associés au décès devraient être pris en compte dans les interventions de santé pour réduire la mortalité néonatale. PMID:27583071

  6. Elaboration de nouvelles approches micromecaniques pour l'optimisation des performances mecaniques des materiaux heterogenes

    NASA Astrophysics Data System (ADS)

    Aboutajeddine, Ahmed

    Les modeles micromecaniques de transition d'echelles qui permettent de determiner les proprietes effectives des materiaux heterogenes a partir de la microstructure sont consideres dans ce travail. L'objectif est la prise en compte de la presence d'une interphase entre la matrice et le renforcement dans les modeles micromecaniques classiques, de meme que la reconsideration des approximations de base de ces modeles, afin de traiter les materiaux multiphasiques. Un nouveau modele micromecanique est alors propose pour tenir compte de la presence d'une interphase elastique mince lors de la determination des proprietes effectives. Ce modele a ete construit grace a l'apport de l'equation integrale, des operateurs interfaciaux de Hill et de la methode de Mori-Tanaka. Les expressions obtenues pour les modules globaux et les champs dans l'enrobage sont de nature analytique. L'approximation de base de ce modele est amelioree par la suite dans un nouveau modele qui s'interesse aux inclusions enrobees avec un enrobage mince ou epais. La resolution utilisee s'appuie sur une double homogeneisation realisee au niveau de l'inclusion enrobee et du materiau. Cette nouvelle demarche, permettra d'apprehender completement les implications des approximations de la modelisation. Les resultats obtenus sont exploites par la suite dans la solution de l'assemblage de Hashin. Ainsi, plusieurs modeles micromecaniques classiques d'origines differentes se voient unifier et rattacher, dans ce travail, a la representation geometrique de Hashin. En plus de pouvoir apprecier completement la pertinence de l'approximation de chaque modele dans cette vision unique, l'extension correcte de ces modeles aux materiaux multiphasiques est rendue possible. Plusieurs modeles analytiques et explicites sont alors proposee suivant des solutions de differents ordres de l'assemblage de Hashin. L'un des modeles explicite apparait comme une correction directe du modele de Mori-Tanaka, dans les cas ou celui ci echoue a

  7. VIEW POURING PLATFORM SHOWING MOLD POURING JACKETS AND WEIGHTS AND, ...

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

    VIEW POURING PLATFORM SHOWING MOLD POURING JACKETS AND WEIGHTS AND, IN THE FOREGROUND, SAND RETURN FROM THE SHAKEOUT ACTUATING A SIMPLE LEVER SYSTEM THAT ADDED FRESH WATER TO THE SAND IN PREPARATION FOR ITS REUSE. - Southern Ductile Casting Company, Centerville Foundry, 101 Airport Road, Centreville, Bibb County, AL

  8. Morbidité et mortalité des nouveau-nés hospitalisés sur 10 années à la Clinique El Fateh-Suka (Ouagadougou, Burkina Faso)

    PubMed Central

    Nagalo, Kisito; Dao, Fousséni; Tall, François Housséini; Yé, Diarra

    2013-01-01

    Introduction La mortalité néonatale demeure un problème majeur de santé publique dans les pays en développement. Notre étude avait pour but de déterminer la morbidité et la mortalité des nouveau-nés à Ouagadougou, Burkina Faso. Méthodes Une étude rétrospective sur 10 années a permis d'inclure tous les nouveau-nés admis dans l'Unité de Néonatologie de la Clinique El Fateh-Suka. Résultats Au total, 697 nouveau-nés étaient hospitalisés sur la période d'étude. Les principaux diagnostics étaient les infections néonatales (23.5%), les anomalies liées à la durée de la gestation et à la croissance du fætus (17.9%) et le paludisme congénital (15.1%). Les 91 (13.1%) décès étaient dus aux anomalies liées à la durée de la grossesse et à la croissance du fætus (46.1%), à l'hypoxie intra-utérine et à l'asphyxie obstétricale (20,9%) et aux infections néonatales (17.6%). Ces décès survenaient dans 81.3% dans les 72 heures, dans 93.4% des cas dans la première semaine d'hospitalisation. Le facteur de risque associé à ces décès était la voie basse d'accouchement (p = 0.02). Conclusion Cette étude a identifié des pathologies évitables déjà décrites comme les principales causes d'hospitalisations et de décès néonatals. La voie basse d'accouchement était le facteur de risque associé à ces décès, ce qui n'avait pas encore été rapporté. Les efforts pour améliorer la qualité des services de soins périnatals doivent être intensifiés afin de réduire la mortalité néonatale dans les pays en développement. PMID:23785558

  9. Conception d'un circuit d'etouffement pour photodiodes a avalanche en mode geiger pour integration heterogene 3d

    NASA Astrophysics Data System (ADS)

    Boisvert, Alexandre

    Le Groupe de Recherche en Appareillage Medical de Sherbrooke (GRAMS) travaille actuellement sur un programme de recherche portant sur des photodiodes a avalanche mono-photoniques (PAMP) operees en mode Geiger en vue d'une application a la tomographie d'emission par positrons (TEP). Pour operer dans ce mode; la PAMP, ou SPAD selon l'acronyme anglais (Single Photon Avalanche Diode), requiert un circuit d'etouffement (CE) pour, d'une part, arreter l'avalanche pouvant causer sa destruction et, d'autre part. la reinitialiser en mode d'attente d'un nouveau photon. Le role de ce CE comprend egalement une electronique de communication vers les etages de traitement avance de signaux. La performance temporelle optimale du CE est realisee lorsqu'il est juxtapose a la PAMP. Cependant, cela entraine une reduction de la surface photosensible ; un element crucial en imagerie. L'integration 3D, a base d'interconnexions verticales, offre une solution elegante et performante a cette problematique par l'empilement de circuits integres possedant differentes fonctions (PAMP, CE et traitement avance de signaux). Dans l'approche proposee, des circuits d'etouffement de 50 pm x 50 pm realises sur une technologie CMOS 130 mn 3D Tezzaron, contenant chacun 112 transistors, sont matrices afin de correspondre a une matrice de PAMP localisee sur une couche electronique superieure. Chaque circuit d'etouffement possede une gigue temporelle de 7,47 ps RMS selon des simulations faites avec le logiciel Cadence. Le CE a la flexibilite d'ajuster les temps d'etouffement et de recharge pour la PAMP tout en presentant une faible consommation de puissance (~ 0,33 mW a 33 Mcps). La conception du PAMP necessite de supporter des tensions superieures aux 3,3 V de la technologie. Pour repondre a ce probleme, des transistors a drain etendu (DEMOS) ont ete realises. En raison de retards de production par Ies fabricants, les circuits n'ont pu etre testes physiquement par des mesures. Les resultats de ce memoire

  10. Large loop conformation sampling using the activation relaxation technique, ART-nouveau method.

    PubMed

    St-Pierre, Jean-François; Mousseau, Normand

    2012-07-01

    We present an adaptation of the ART-nouveau energy surface sampling method to the problem of loop structure prediction. This method, previously used to study protein folding pathways and peptide aggregation, is well suited to the problem of sampling the conformation space of large loops by targeting probable folding pathways instead of sampling exhaustively that space. The number of sampled conformations needed by ART nouveau to find the global energy minimum for a loop was found to scale linearly with the sequence length of the loop for loops between 8 and about 20 amino acids. Considering the linear scaling dependence of the computation cost on the loop sequence length for sampling new conformations, we estimate the total computational cost of sampling larger loops to scale quadratically compared to the exponential scaling of exhaustive search methods.

  11. Syndrome de Chilaiditi chez un nouveau-né, à propos d'un cas

    PubMed Central

    Cedrick, Sangwa Milindi; Maruis, Kitembo Feruzi; Mireille, Kakinga Zabibu; Nelly, Mukonda Sompo; Patience, Muhau Pfutila; Shem, Mapatano; Chamy, Cham Lubamba; Josephine, Monga Kalenga

    2014-01-01

    L'interposition du colon ou du grêle dans l'espace interhepatodiagramatique est une affection rare. Souvent asymptomatique et de découverte fortuite à la radiographie de l'abdomen, elle est plus rencontrée chez l'adulte de sexe masculin. Dans cet article, les auteurs présentent un cas exceptionnel d'un nouveau- né de sexe féminin porteur de cette anomalie. PMID:25848454

  12. L’administration postnatale de corticoïdes pour traiter ou prévenir les affections pulmonaires chroniques chez les prématurés

    PubMed Central

    2002-01-01

    Le présent énoncé est conçu à l’intention des professionnels de la santé qui soignent des nouveau-nés et de jeunes nourrissons. Il vise à examiner les effets à court et à long terme de l’administration postnatale de corticoïdes systémiques et par inhalation pour prévenir ou traiter une affection pulmonaire chronique évolutive ou établie et à faire des recommandations quant à l’usage de corticoïdes chez les nourrissons à très faible poids de naissance. Le recours systématique à la dexaméthasone systémique pour prévenir ou traiter une affection pulmonaire chronique n’est pas recommandé chez les nourrissons à très faible poids de naissance.

  13. When It Rains, It Pours

    ERIC Educational Resources Information Center

    Mills, Linda

    2012-01-01

    "It's raining, it's pouring, the old man is snoring!" "The itsy, bitsy spider crawled up the waterspout, down came the rain and washed the spider out. Out came the sun and dried up all the rain, and the itsy, bitsy spider went up the spout again." What do children's nursery rhymes have to do with the school library? The author begins by telling a…

  14. Association sarcoïdose et cirrhose biliaire primitive: à propos d'un nouveau cas

    PubMed Central

    Aqodad, Nourdin; Loukili, Bouchra; Gallouj, Salim; Harmouch, Taoufik; Amarti, Afaf; Mernissi, FZ; Ibrahimi, Adil

    2014-01-01

    La sarcoïdose est une maladie systémique d’étiologie inconnue. Elle est caractérisée par la présence de lésions granulomateuses, non caséeuses, au niveau des organes atteints. La cirrhose biliaire primitive (CBP) est une hépatopathie cholestatique auto-immune chronique, caractérisée par une destruction des canalicules biliaires et la présence d'anticorps antimitchondries type M2. L'association sarcoïdose et CBP est rare. Nous rapportons un nouveau cas de cette association avec revue de la littérature. PMID:25489373

  15. X-ray fluorescence and ion beam analysis of iridescent Art Nouveau glass - authenticity and technology

    NASA Astrophysics Data System (ADS)

    Jembrih-Simbürger, D.; Neelmeijer, C.; Mäder, M.; Schreiner, M.

    2004-11-01

    EDXRF analysis with subsequent multivariate data analysis proves useful for the determination of the authenticity of iridescent glass artifacts. Thus, clusters of the glass groups investigated were formed which can be associated with the glass manufacturers. By means of ion beam analysis with the external proton beam the producing technology of iridescent glass objects of the Art Nouveau glass manufacturer Loetz/Austria with so-called Papillon pattern was characterised in a non-destructive way. Due to the simultaneous application of PIXE and RBS the glass structure including a sequence of glass layers covered with a SnO 2-layer of approximately 50 nm thickness on the surface could be described.

  16. Communications protocol

    NASA Technical Reports Server (NTRS)

    Zhou, Xiaoming (Inventor); Baras, John S. (Inventor)

    2010-01-01

    The present invention relates to an improved communications protocol which increases the efficiency of transmission in return channels on a multi-channel slotted Alohas system by incorporating advanced error correction algorithms, selective retransmission protocols and the use of reserved channels to satisfy the retransmission requests.

  17. Technique distribuee de gestion de la charge sur le reseau electrique et ring-tree: Un nouveau systeme de communication P2P

    NASA Astrophysics Data System (ADS)

    Ayoub, Simon

    suffisant pour les besoins des applications visees. Les protocoles de communication s'appuient sur un protocole de transport qui peut etre un de ceux utilises sur l'Internet comme TCP ou UDP. Pour valider le fonctionnement de de la technique de controle distribuee et le systeme de communiction Ring-Tree, un simulateur a ete developpe; un modele de chauffe-eau, comme exemple de charge, a ete integre au simulateur. La simulation d'une communaute de chauffe-eaux intelligents a montre que la technique de gestion de la charge combinee avec du stockage d'energie sous forme thermique permet d'obtenir, sans affecter le confort de l'utilisateur, des profils de consommation varies dont un profil de consommation uniforme qui represente un facteur de charge de 100%. Mots-cles : Algorithme Distribue, Demand Response, Gestion de la Charge Electrique, M2M (Machine-to-Machine), P2P (Peer-to-Peer), Reseau Electrique Intelligent, Ring-Tree, Smart Grid

  18. Iridescent Art Nouveau glass - IBA and XPS for the characterisation of thin iridescent layers

    NASA Astrophysics Data System (ADS)

    Jembrih, D.; Neelmeijer, C.; Schreiner, M.; Mäder, M.; Ebel, M.; Svagera, R.; Peev, M.

    2001-07-01

    The external proton beam of the Tandem accelerator of the Research Centre in Rossendorf/Germany was used to carry out non-destructive particle-induced X-ray emission (PIXE) particle-induced gamma-ray emission (PIGE) and Rutherford backscattering (RBS) measurements simultaneously on Art Nouveau artifacts produced around 1900 by Tiffany/USA and Loetz/Austria. These studies should proof the technology of producing an iridescent layer on a glass surface. By means of the yield ratio Y(Si-K)/ Y(Si-γ) of both characteristic X-radiation (Si-K) and γ-radiation (Si-γ) of the element silicon it could be shown that a thin top layer is present on the glass surface due to the treatment of the heated artifacts (about 500°C) with an alcoholic solution of SnCl 2[1]. Combined evaluation of the PIXE and RBS spectra resulted in a thickness of 20-300 nm for this top layer. In addition, a transition region between the iridescent layer and the bulk glass was obtained by RUMP simulations. Approximately 80% of the total amount of the Sn were found to be present in this transition layer and only 10-20% in the outermost surface region. XPS studies showed that the outermost layer consists of SnO 2. The formation of other Sn compounds in the outermost near-surface region based on Sn-Si-O during the manufacturing process can be excluded.

  19. Comparison of Two Hierarchical Routing Protocols for Heterogeneous MANET

    DTIC Science & Technology

    2007-10-01

    révèlent que le protocole H-OLSR est d’un rendement supérieur au protocole H-LANMAR pour la plupart des scénarios de mobilité de groupe qui portent...bien à une topologie de MANET hétérogène du domaine tactique. Nous recourons à des scénarios de mobilité de groupe qui caractérisent l’exploitation

  20. Méningite à streptocoque du groupe A chez le nouveau né: à propos d'un cas

    PubMed Central

    El Youssi, Hind; Touaoussa, Aziz; Deham, Hanouf; Yahyaoui, Ghita; Mahmoud, Mustapha

    2015-01-01

    Bien qu'une augmentation de l'incidence et de la sévérité des infections invasives au streptocoque du groupe A (SGA) durant ces dernières décades ait été constatée par plusieurs auteurs, les méningites dues à cette bactérie restent exceptionnelles chez le nouveau né et leur physiopathologie est encore mal connue. A travers ce travail nous allons rapporter le cas d'une méningite néonatale à SGA diagnostiquée au sein de notre formation, avec revue de la littérature s'intéressant à ces méningites. PMID:26185565

  1. INTERIOR VIEW, LOOKING WEST, WITH CRANE OPERATOR, TED SEALS, POURING ...

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

    INTERIOR VIEW, LOOKING WEST, WITH CRANE OPERATOR, TED SEALS, POURING MOLTEN METAL INTO A 1,300 TON ELECTRIC HOLDING FURNACE OR MIXER. AN ELECTRONIC SCALE RECORDED THAT 50.5 TONS OF METAL WERE POURED INTO THE FURNACE DURING THIS POUR. - American Cast Iron Pipe Company, Mixer Building, 1501 Thirty-first Avenue North, Birmingham, Jefferson County, AL

  2. Efficacité de la prévention de la transmission mère-enfant du Virus de l'Immunodéficience Humaine par le protocole 2010 de l'Organisation Mondiale de la Santé au Centre Médical Saint Camille de Ouagadougou (Burkina Faso)

    PubMed Central

    OuédraogoYugbaré, Solange Odile; Zagré, Nikaise; Koueta, Fla; Dao, Lassina; Kam, Ludovic; Ouattara, Diarra Yé; Simporé, Jacques

    2015-01-01

    L’épidémie du Virus de l'Immunodéficience Humaine en milieu pédiatrique est surtout le résultat de la transmission mère-enfant. Notre étude a pour objectif de décrire l'efficacité de la prévention de la transmission mère-enfant du Virus de l'Immunodéficience Humaine par le protocole OMS 2010 (Option A et trithérapie) au centre médical saint Camille de Ouagadougou. Nous avons mené une étude d'une cohorte d'enfants suivis dans le cadre de la prévention de la transmission mère-enfant du Virus de l'Immunodéficience Humaine au centre médical saint Camille de Ouagadougou sur une période de 2 ans allant du 1er Janvier 2012 au 31 Décembre 2013. Nous avons obtenu l'accord de 4900 femmes enceintes pour le dépistage de l'infection du Virus de l'Immunodéficience Humaine et 238 gestantes ont été diagnostiquées séropositives soit 4,86% de séroprévalence. Les femmes étaient surtout infectées par le Virus de l'Immunodéficience Humaine avec de type I (95,38%)). La majorité était sous trithérapie (74,3%) et (25,7%) sous prophylaxie (option A). Les nouveau-nés (92,5%) ont reçu un traitement antirétroviral à base de névirapine dans les 72 heures après la naissance. L'allaitement sécurisé a été appliquée dans 78% des cas. Le taux global de transmission mère-enfant du VIH était de 3,6% avec 3% de transmission chez les enfants nés de mères sous trithérapie antirétrovirale et 6,3% dans les cas de prophylaxie antirétrovirale. Le facteur de risque de transmission a été le long délai du début d'administration des antirétroviraux chez le nouveau-né. La mortalité infantile à un an était de 3,5%. Cette étude a révélé l'efficacité de l'Option A et conforté celle de la trithérapie, le passage à l'Option B+ serait donc plus bénéfique. PMID:26966499

  3. A Statistical Treatment of Bioassay Pour Fractions

    NASA Technical Reports Server (NTRS)

    Barengoltz, Jack; Hughes, David W.

    2014-01-01

    The binomial probability distribution is used to treat the statistics of a microbiological sample that is split into two parts, with only one part evaluated for spore count. One wishes to estimate the total number of spores in the sample based on the counts obtained from the part that is evaluated (pour fraction). Formally, the binomial distribution is recharacterized as a function of the observed counts (successes), with the total number (trials) an unknown. The pour fraction is the probability of success per spore (trial). This distribution must be renormalized in terms of the total number. Finally, the new renormalized distribution is integrated and mathematically inverted to yield the maximum estimate of the total number as a function of a desired level of confidence ( P(pour fraction. The extension to recovery efficiency corrections is also presented. Now the product of recovery efficiency and pour fraction may be small enough that the likely value may be much larger than the usual calculation: the number of spores divided by that product. The use of this analysis would not be limited to microbiological data.

  4. Lubricating oil containing VII pour depressant

    SciTech Connect

    Hart, W.P.; Mays, D.L.

    1986-08-19

    Lubricating oils for internal combustion engines typically contain a multitude of additives which function as detergents, dispersants, viscosity index improvers, pour depressants, etc. in order to improve the properties of the oil. It is found that it is particularly necessary to improve the properties exhibited by lubricating oil compositions at low temperatures. It is an object of this invention to provide a lubricating oil containing an additive which provides improved properties at low temperatures.

  5. Nanofabrication de boites quantiques laterales pour l'optimisation de qubits de spin

    NASA Astrophysics Data System (ADS)

    Camirand Lemyre, Julien

    On présente dans ce travail un nouveau type de qubit de spin dont les performances reposent sur les propriétés d'un seul électron dans une double boîte quantique. Le fort moment dipolaire de la double boite combiné à une large variation du champ magnétique entre les deux boîtes permettrait de réaliser des opérations logiques plus rapidement que dans une seule boîte quantique. Pour maximiser les variations du champ magnétique, on utilisera un micro-aimant placé le plus près possible d'une des deux boîtes. À cette fin, une hétérostructure de GaAs/A1GaAs sur laquelle sont déposées des grilles d'aluminium a été utilisée pour former une double boite quantique latérale. L'occupation par un seul électron de la double boîte est confirmée par des mesures de transport électrique à basse température ainsi que par l'observation du blocage de spin. De plus, un procédé d'oxydation des grilles par plasma d'oxygène a été développé. Une étude des propriétés de l'oxyde formé par cette méthode montre qu'il est possible de placer un micro-aimant directement sur la surface de l'hétérostructure sans affecter l'isolation électrique entre les grilles. Cette nouvelle approche permet de produire des champs magnétiques encore plus intenses que dans les expériences antérieures, pour lesquelles le micro-aimant est placé beaucoup plus loin de la surface. L'ensemble du procédé de fabrication, de la photolithographie à l'électrolithographie, a été développé au cours de ce travail dans les salles blanches du département de génie électrique et dans les salles propres du département de physique de l'Université de Sherbrooke. Ce travail est une étape importante dans la réalisation de qubits de spin plus performants dans les boîtes quantiques latérales. Mots-clés: Information quantique, Spin, Rotations ultra-rapides, Boîtes quantiques latérales, Micro-aimants, Oxydation plasma, Nanofabrication.

  6. FRONT VIEW OF POURING FROM #61 HOLDING FURNACE AT #02 ...

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

    FRONT VIEW OF POURING FROM #61 HOLDING FURNACE AT #02 STATION INTO THREE VERTICAL MOLDS SUBMERGED IN A WATER-FILLED TANK BELOW THE CASTING FLOOR. THE CASTING CREW'S JOBS DURING THIS PHASE OF THE OPERATION INCLUDE REGULATING THE POURING RATE AND MONITORING THE VALVE RODS THAT CONTROL THE WATER SPRAYS ON THE MOLDS. DIFFERENT ALLOYS REQUIRE SPECIFIC POURING SPEEDS AND WATER PRESSURES. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

  7. A statistical treatment of bioassay pour fractions

    NASA Astrophysics Data System (ADS)

    Barengoltz, Jack; Hughes, David

    A bioassay is a method for estimating the number of bacterial spores on a spacecraft surface for the purpose of demonstrating compliance with planetary protection (PP) requirements (Ref. 1). The details of the process may be seen in the appropriate PP document (e.g., for NASA, Ref. 2). In general, the surface is mechanically sampled with a damp sterile swab or wipe. The completion of the process is colony formation in a growth medium in a plate (Petri dish); the colonies are counted. Consider a set of samples from randomly selected, known areas of one spacecraft surface, for simplicity. One may calculate the mean and standard deviation of the bioburden density, which is the ratio of counts to area sampled. The standard deviation represents an estimate of the variation from place to place of the true bioburden density commingled with the precision of the individual sample counts. The accuracy of individual sample results depends on the equipment used, the collection method, and the culturing method. One aspect that greatly influences the result is the pour fraction, which is the quantity of fluid added to the plates divided by the total fluid used in extracting spores from the sampling equipment. In an analysis of a single sample’s counts due to the pour fraction, one seeks to answer the question: What is the probability that if a certain number of spores are counted with a known pour fraction, that there are an additional number of spores in the part of the rinse not poured. This is given for specific values by the binomial distribution density, where detection (of culturable spores) is success and the probability of success is the pour fraction. A special summation over the binomial distribution, equivalent to adding for all possible values of the true total number of spores, is performed. This distribution when normalized will almost yield the desired quantity. It is the probability that the additional number of spores does not exceed a certain value. Of course

  8. Alternative parallel ring protocols

    NASA Technical Reports Server (NTRS)

    Mukkamala, R.; Foudriat, E. C.; Maly, Kurt J.; Kale, V.

    1990-01-01

    Communication protocols are know to influence the utilization and performance of communication network. The effect of two token ring protocols on a gigabit network with multiple ring structure is investigated. In the first protocol, a mode sends at most one message on receiving a token. In the second protocol, a mode sends all the waiting messages when a token is received. The behavior of these protocols is shown to be highly dependent on the number of rings as well as the load in the network.

  9. APPARATUS FOR MELTING AND POURING METAL

    DOEpatents

    Harris, F.A.

    1958-02-25

    This patent relates to a crucible for melting and pouring a metal under controlled atmospheric conditions. The crucible has a frangible plug in the bottom and a retaining device to prevent the entrance of the broken portions of the plug into the mold without interfering with the flow of the melt. After the charge has been melted, a knockout rod is lowered through the charge and forced against the frangible plug sufficiently to break off the closure disk along a previously scored line. The disk drops onto a retaining grid large enough to permit the flow of metal around the disk and into the mold below. Thts arrangement elimnates the entry of broken portions of the plug into the mold, thereby elimnating a common cause of imperfect castings.

  10. Internet Protocol Implementation Guide.

    DTIC Science & Technology

    1982-08-01

    Communications Netwv ’rks Reference: (a) USDR&E Memo, lHost-to-Host Protocols for Data Communications Networks," 23 Dec 78 (b) DoD Standard Transmission Control...memorandum is to clarify DOD policy concerning standardization of host-to-host protocols for data communications networks. 2. Tho policy cited in reference...function is intendel Lu paoe inrdased emphasis and Initiative on the Important and currently volatile technology of data communications protocol

  11. Expanding Ring for the DWPF Melter Pour Spout

    SciTech Connect

    Imrich, K.J.

    2002-09-23

    The Materials Technology Section was requested to develop a novel concept, namely that of an expanding ring, to restore the upper knife edge in the DWPF melter pour spout. The expanding ring is a unit that, when deployed in the DPWF pour spout, will self-expand against the inner diameter of the 3-inch section of the pour spout providing a seal against glass leakage and a new knife edge that will mate with a Type 3A insert. This report provides a summary of the final design features of the expanding ring and an overview of its development.

  12. National Sample Assessment Protocols

    ERIC Educational Resources Information Center

    Ministerial Council on Education, Employment, Training and Youth Affairs (NJ1), 2012

    2012-01-01

    These protocols represent a working guide for planning and implementing national sample assessments in connection with the national Key Performance Measures (KPMs). The protocols are intended for agencies involved in planning or conducting national sample assessments and personnel responsible for administering associated tenders or contracts,…

  13. Decodeurs rapides pour codes topologiques quantiques

    NASA Astrophysics Data System (ADS)

    Duclos-Cianci, Guillaume

    L'encodage topologique de l'information quantique a attire beaucoup d'attention, car c'est un modele qui semble propice a resister aux erreurs locales. Tout d'abord, le modele du calcul topologique est base sur la statistique anyonique non-Abelienne universelle et sur son controle. Des anyons indesirables peuvent apparaitre soudainement, en raison de fluctuations thermiques ou de processus virtuels. La presence de ces anyons peut corrompre l'information encodee, il est necessaire de les eliminer: la correction consiste a fusionner les defauts tout en preservant la topologie du systeme. Ensuite, dans le cas des codes topologiques, on doit aussi proteger l'information encodee dans la topologie. En effet, dans ces systemes, on n'a acces qu'a une fraction de l'information decrivant l'erreur. Elle est recueillie par des mesures et peut etre interpretee en termes de particules. Ces defauts peuplent le code et doivent etre annihiles adequatement dans le but de preserver l'information encodee. Dans ce memoire, nous proposons un algorithme efficace, appele decodeur, pouvant etre utilise dans les deux contextes decrits ci-haut. Pour y parvenir, cet algorithme s'inspire de methodes de renormalisation et de propagation de croyance. Il est exponentiellement plus rapide que les methodes deja existantes, etant de complexite O (ℓ2 log ℓ) en serie et, si on parallelise, O (log ℓ) en temps, contre O (ℓ6) pour les autres decodeurs. Le temps etant le facteur limitant dans le probleme du decodage, cette caracteristique est primordiale. De plus, il tolere une plus grande amplitude de bruit que les methodes existantes; il possede un seuil de ˜ 16.5% sur le canal depolarisant surpassant le seuil deja etabli de ˜ 15.5%. Finalement, il est plus versatile. En effet, en etant limite au code de Kitaev, on ne savait pas decoder les codes topologiques de maniere generale (e.g. codes de couleur). Or, le decodeur propose dans ce memoire peut traiter la grande classe des codes

  14. POURING IRON FROM BULL LADLE INTO MOBILE LADLES USED TO ...

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

    POURING IRON FROM BULL LADLE INTO MOBILE LADLES USED TO FILL MOLDS ON CONVEYOR LINES AFTER FERRO-SILICON IS ADDED TO ENHANCE DUCTILITY AND FLUIDITY. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

  15. 42. Casting floor, "B" furnace, pour in progress; mudgun is ...

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

    42. Casting floor, "B" furnace, pour in progress; mudgun is to right of furnace; operator takes temperature of iron in trough during pout. Looking south - Rouge Steel Company, 3001 Miller Road, Dearborn, MI

  16. 41. Casting floor, "B" furnace, pour in progress; mudgun is ...

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

    41. Casting floor, "B" furnace, pour in progress; mudgun is to right of furnace; photo taken from furnace operator's booth. Looking south/southwest - Rouge Steel Company, 3001 Miller Road, Dearborn, MI

  17. 6. VIEW LOOKING WEST FROM THE POURING AISLE OF THE ...

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

    6. VIEW LOOKING WEST FROM THE POURING AISLE OF THE ELECTRIC FURNACE BUILDING AT ELECTRIC FURNACE X-3. - U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

  18. POURING IRON FROM ELECTRIC FURNACE INTO BULL LADLE AFTER MAGNESIUM ...

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

    POURING IRON FROM ELECTRIC FURNACE INTO BULL LADLE AFTER MAGNESIUM HAD BEEN ADDED TO GENERATE DUCTILE IRON WHEN IT COOLS IN THE MOLD. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

  19. 45. EXPOSEDAGGREGATE CONCRETE AT NICHE, NORTH BOUNDARY, SEVERAL TEXTURES POURED ...

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

    45. EXPOSED-AGGREGATE CONCRETE AT NICHE, NORTH BOUNDARY, SEVERAL TEXTURES POURED AT ONE TIME, October 1987 - Meridian Hill Park, Bounded by Fifteenth, Sixteenth, Euclid & W Streets, Northwest, Washington, District of Columbia, DC

  20. 13. MASS OF POURED CONCRETE IN IRREGULAR STEPPED LAYERS AT ...

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

    13. MASS OF POURED CONCRETE IN IRREGULAR STEPPED LAYERS AT THE BASE OF THE LEFT (EAST) BUTTRESS. CAMERA FACING SOUTHWEST. - Salinas Dam, Salinas River near Pozo Road, Santa Margarita, San Luis Obispo County, CA

  1. 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

  2. Montreal protocol: Business opportunites

    SciTech Connect

    1998-12-31

    The Montreal Protocol on Substances that Deplete the Ozone Layer was signed by 24 countries in 1987, establishing measures for controlling the production and consumption of ozone-depleting substances. This publication begins with some background information on ozone depletion and the history of the Protocol. It then describes aspects of the Protocol`s Multilateral Fund, created to assist developing countries to meet Protocol deadlines: Its administration, structure, and how projects are initiated. Names, addresses, and phone/fax numbers of Fund contacts are provided. Canadian projects under the Fund are then reviewed and opportunities for Canadian environmental companies are noted. Finally, information sheets are presented which summarize Fund-related Canadian bilateral projects undertaken to date.

  3. Reliable broadcast protocols

    NASA Technical Reports Server (NTRS)

    Joseph, T. A.; Birman, Kenneth P.

    1989-01-01

    A number of broadcast protocols that are reliable subject to a variety of ordering and delivery guarantees are considered. Developing applications that are distributed over a number of sites and/or must tolerate the failures of some of them becomes a considerably simpler task when such protocols are available for communication. Without such protocols the kinds of distributed applications that can reasonably be built will have a very limited scope. As the trend towards distribution and decentralization continues, it will not be surprising if reliable broadcast protocols have the same role in distributed operating systems of the future that message passing mechanisms have in the operating systems of today. On the other hand, the problems of engineering such a system remain large. For example, deciding which protocol is the most appropriate to use in a certain situation or how to balance the latency-communication-storage costs is not an easy question.

  4. Reliable multicast protocol specifications protocol operations

    NASA Technical Reports Server (NTRS)

    Callahan, John R.; Montgomery, Todd; Whetten, Brian

    1995-01-01

    This appendix contains the complete state tables for Reliable Multicast Protocol (RMP) Normal Operation, Multi-RPC Extensions, Membership Change Extensions, and Reformation Extensions. First the event types are presented. Afterwards, each RMP operation state, normal and extended, is presented individually and its events shown. Events in the RMP specification are one of several things: (1) arriving packets, (2) expired alarms, (3) user events, (4) exceptional conditions.

  5. Protocols — EDRN Public Portal

    Cancer.gov

    EDRN investigators protocols. The following is a list of the EDRN protocols that have been captured and curated. Additional information will be added as it is available. Contact information is provided as part of the detail for each protocol.

  6. Quantum deniable authentication protocol

    NASA Astrophysics Data System (ADS)

    Shi, Wei-Min; Zhou, Yi-Hua; Yang, Yu-Guang

    2014-07-01

    The proposed quantum identity authentication schemes only involved authentication between two communicators, but communications with deniability capability are often desired in electronic applications such as online negotiation and electronic voting. In this paper, we proposed a quantum deniable authentication protocol. According to the property of unitary transformation and quantum one-way function, this protocol can provide that only the specified receiver can identify the true source of a given message and the specified receiver cannot prove the source of the message to a third party by a transcript simulation algorithm. Moreover, the quantum key distribution and quantum encryption algorithm guarantee the unconditional security of this scheme. Security analysis results show that this protocol satisfies the basic security requirements of deniable authentication protocol such as completeness and deniability and can withstand the forgery attack, impersonation attack, inter-resend attack.

  7. Investigation of waste glass pouring behavior over a knife edge

    SciTech Connect

    Ebadian, M.A.

    1998-01-01

    The development of vitrification technology for converting radioactive waste into a glass solid began in the early 1960s. Some problems encountered in the vitrification process are still waiting for a solution. One of them is wicking. During pouring, the glass stream flows down the wall of the pour spout until it reaches an angled cut in the wall. At this point, the stream is supposed to break cleanly away from the wall of the pour spout and fall freely into the canister. However, the glass stream is often pulled toward the wall and does not always fall into the canister, a phenomenon known as wicking. Phase 1 involves the assembly, construction, and testing of a melter capable of supplying molten glass at operational flow rates over a break-off point knife edge. Phase 2 will evaluate the effects of glass and pour spout temperatures as well as glass flow rates on the glass flow behavior over the knife edge. Phase 3 will identify the effects on wicking resulting from varying the knife edge diameter and height as well as changing the back-cut angle of the knife edge. The following tasks were completed in FY97: Design the experimental system for glass melting and pouring; Acquire and assemble the melter system; and Perform initial research work.

  8. Developpement d'un catalyseur nickel-alumine efficace pour le reformage de diesel a la vapeur d'eau et etude du systeme reactionnel

    NASA Astrophysics Data System (ADS)

    Fauteux-Lefebvre, Clemence

    Le developpement de sources d'energie alternatives fiables et efficaces est aujourd'hui une necessite. L' interet dans le reformage d'hydrocarbures liquides est ainsi croissant puisqu'il s'agit d'une voie pour l'alimentation des piles a combustible. Les piles a combustible ont une efficacite pour la conversion d'energie en electricite plus grande que celle des moteurs a combustion et font ainsi partie de la recherche de solution en efficacite energetique. Ces piles consomment de l'hydrogene comme combustible pour produire de l'electricite, d'ou l'interet pour le reformage. En effet, cette reaction permet de produire de l'hydrogene et du monoxyde de carbone (un autre combustible des piles a combustible a electrolyte solide) a partir d'hydrocarbure liquide, notamment le diesel. Les piles pourraient donc etre integrees avec une unite de reformage leur fournissant directement le combustible necessaire a partir de diesel. Dans ce projet de recherche, un nouveau catalyseur de nickel sous forme de spinelle nickel-alumine (spinelle NiAl2O4 sur support d'alumine et de zircone stabilisee avec yttria) a ete developpe et teste en laboratoire pour du reformage de propane, d'hydrocarbures liquides et de diesel, a la vapeur d'eau. Par ailleurs, une methode d'ajout des reactifs novatrice a ete utilisee afin de diminuer la pyrolyse precedant le reformage, en utilisant une emulsion. Les resultats de reformage d'hydrocarbures purs ont montre des concentrations tres pres de l'equilibre thermodynamique et une activite constante sans desactivation du catalyseur ni formation de carbone, et ce avec des ratios H2O/C de moins de 2.5 et des temperatures d'operation variant entre 630 °C et 750 °C. Lors de tests effectues en utilisant du diesel fossile, a 705°C, avec un debit volumique des reactifs de plus de 50 000 cm3gcat-1h-1 et un ratio H2O/C de moins de 2.5, l'activite a ete maintenue pendant plus de 15 heures, malgre une operation en cycles. L'analyse du catalyseur apres cette

  9. Ablation laser pour la microélectronique plastique

    NASA Astrophysics Data System (ADS)

    Alloncle, A.-P.; Thomas, B.; Grojo, D.; Delaporte, Ph.; Sentis, M.; Sanaur, S.; Barret, M.; Collot, Ph.

    2006-12-01

    La microélectronique plastique connaît un développement sans précédent dans le domaine de la recherche. Cette étude s'intéresse à l'utilisation des lasers impulsionnels pour la réalisation de composants organiques sur supports souples. Les deux aspects plus particulièrement étudiés sont d'une part la gravure de polymère pour réaliser un canal entre la source et le drain, et d'autre part le développement d'un procédéde dépôt appelé LIFT pour Laser Induced Forward Transfer. Ce dernier pourrait notamment permettre dedéposer des composés organiques non solubles.

  10. Protocols for quantum binary voting

    NASA Astrophysics Data System (ADS)

    Thapliyal, Kishore; Sharma, Rishi Dutt; Pathak, Anirban

    Two new protocols for quantum binary voting are proposed. One of the proposed protocols is designed using a standard scheme for controlled deterministic secure quantum communication (CDSQC), and the other one is designed using the idea of quantum cryptographic switch, which uses a technique known as permutation of particles. A few possible alternative approaches to accomplish the same task (quantum binary voting) have also been discussed. Security of the proposed protocols is analyzed. Further, the efficiencies of the proposed protocols are computed, and are compared with that of the existing protocols. The comparison has established that the proposed protocols are more efficient than the existing protocols.

  11. Algorithmes et architectures pour ordinateurs quantiques supraconducteurs

    NASA Astrophysics Data System (ADS)

    Blais, A.

    2003-09-01

    'utilisation de qubits basés sur les jonctions Josephson. On présente entre autres une approche originale pour l'interaction entre qubits. Cette approche est très générale puisqu'elle peut être appliquée à différents designs de qubits. Finalement, on s'intéresse à la lecture des qubits supraconducteurs de flux. Le détecteur suggéré ici a l'avantage de pouvoir être découplé du qubit lorsqu'il n'y a pas de mesure en cours.

  12. WOODSTOVE DURABILITY TESTING PROTOCOL

    EPA Science Inventory

    The report discusses the development of an accelerated laboratory test to simulate in-home woodstove aging and degradation. nown as a stress test, the protocol determines the long-term durability of woodstove models in a 1- to 2-week time frame. wo avenues of research have been t...

  13. Simple wavelength assignment protocol

    NASA Astrophysics Data System (ADS)

    Suryaputra, Stephen; Touch, Joseph D.; Bannister, Joseph A.

    2000-10-01

    IP routers can be coupled with wavelength-selective optical cross- connects to support existing Internet infrastructure in a wavelength division multiplexing (WDM) optical network. Because optical wavelength routing is transparent to IP, packets can bypass traditional forwarding and pass directly through the optical cross-connect, resulting in very high throughput and low delay routing. This approach shares features with label switching, but wavelengths are much more scarce resource than labels. Because optical switches have larger switching times than electronic switches, and wavelength conversions are expensive, wavelength label swapping is not easily done. Wavelength label assignments must consider these limitations to be practical in an optical environment. The performance of an instance of this approach, called Packet over Wavelengths (POW) has been simulated and studied. A new signaling protocol, Simple Wavelength Assignment Protocol (SWAP) is devised to be POW signaling protocol. SWAP takes into account the optical device limitations, and is designed to minimize wavelength conversion, utilize wavelengths with the merging of flows, and reduce the reconfiguration of optical switches. SWAP, to our knowledge, is the first approach to combine signaling and wavelength assignment in an on- line protocol. This paper describes high level SWAP design challenges, decision, and overhead.

  14. Advanced Quantum Communication Protocols

    DTIC Science & Technology

    2005-12-17

    theoretically optimal configuration, and compared hyperentangled and multi-pair encoding. Table of Contents: Summary 2 Relativistic Quantum Cryptography ( RQC ...error rates, for 4- and 6-state RQC 4. Intensity pulses to generate uniform time-interval probability distributions 5. Schematic of photon-arrival...Protocols: Scientific Progress and Accomplishments “Relativistic” Quantum Cryptography We have implemented relativistic quantum cryptography ( RQC ) using

  15. What's a Research Protocol?

    ERIC Educational Resources Information Center

    Holloway, Philip J; Mooney, Jeanette A

    2004-01-01

    A clinical trial needs a carefully structured, written plan in order not only to ensure its smooth running and successful conclusion but also to gain the compulsory agreement of an ethical committee. Such a plan is called a protocol. It consists of several stages. These are: (1) An introduction; (2) A statement of aims, objectives, hypotheses and…

  16. The Master Protocol Concept.

    PubMed

    Redman, Mary W; Allegra, Carmen J

    2015-10-01

    During the past decade, biomedical technologies have undergone an explosive evolution-from the publication of the first complete human genome in 2003, after more than a decade of effort and at a cost of hundreds of millions of dollars-to the present time, where a complete genomic sequence can be available in less than a day and at a small fraction of the cost of the original sequence. The widespread availability of next-generation genomic sequencing has opened the door to the development of precision oncology. The need to test multiple new targeted agents both alone and in combination with other targeted therapies, as well as classic cytotoxic agents, demands the development of novel therapeutic platforms (particularly Master Protocols) capable of efficiently and effectively testing multiple targeted agents or targeted therapeutic strategies in relatively small patient subpopulations. Here, we describe the Master Protocol concept, with a focus on the expected gains and complexities of the use of this design. An overview of Master Protocols currently active or in development is provided along with a more extensive discussion of the Lung Master Protocol (Lung-MAP study).

  17. STEEL BEAMS FOR FIRST FLOOR BEING READIED FOR CONCRETE POUR ...

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

    STEEL BEAMS FOR FIRST FLOOR BEING READIED FOR CONCRETE POUR UNDER WEATHER SHELTER DURING COLD WINTER. NOTE ABUNDANCE OF BEAMS; THE FLOOR WILL SUPPORT HEAVY LOADS. INL NEGATIVE NO. 1175. Unknown Photographer, 12/20/1950 - Idaho National Engineering Laboratory, Test Reactor Area, Materials & Engineering Test Reactors, Scoville, Butte County, ID

  18. Le sumatriptan intranasal pour la migraine chez les enfants

    PubMed Central

    Goldman, Ran D.; Meckler, Garth D.

    2015-01-01

    Résumé Question Je vois de plus en plus d’enfants et d’adolescents qui souffrent de céphalées pouvant se classer dans la catégorie des migraines. J’ai fait des lectures sur le sumatriptan par voie intranasale comme thérapie abortive. Est-ce un traitement efficace? Réponse La migraine aiguë chez les enfants et les adolescents est fréquente et difficile à traiter. Le sumatriptan intranasal est une option sûre et généralement efficace pour les enfants et les adolescents. La dose actuellement recommandée est de 20 mg pour les enfants qui pèsent plus de 40 kg et de 10 mg pour ceux dont le poids se situe entre 20 et 39 kg. Il faudrait faire des études de plus grande envergure pour contrecarrer les limitations des échantillons de petite taille et mieux comprendre la faible concentration plasmique et les effets placebo observés dans les études jusqu’à présent.

  19. First Concrete Poured for NSLS-II Ring Building

    SciTech Connect

    2009-07-20

    The first bits of the National Synchrotron Light Source II (NSLS-II) ring building are now taking shape after the concrete-pouring process for the new, world-class facility began on Monday, July 20. Once complete, the 400,000 square-foot building will house the accelerator ring, the largest component of the machine.

  20. Generalized teleportation protocol

    SciTech Connect

    Gordon, Goren; Rigolin, Gustavo

    2006-04-15

    A generalized teleportation protocol (GTP) for N qubits is presented, where the teleportation channels are nonmaximally entangled and all the free parameters of the protocol are considered: Alice's measurement basis, her sets of acceptable results, and Bob's unitary operations. The full range of fidelity (F) of the teleported state and the probability of success (P{sub suc}) to obtain a given fidelity are achieved by changing these free parameters. A channel efficiency bound is found, where one can determine how to divide it between F and P{sub suc}. A one-qubit formulation is presented and then expanded to N qubits. A proposed experimental setup that implements the GTP is given using linear optics.

  1. Protocols for distributive scheduling

    NASA Technical Reports Server (NTRS)

    Richards, Stephen F.; Fox, Barry

    1993-01-01

    The increasing complexity of space operations and the inclusion of interorganizational and international groups in the planning and control of space missions lead to requirements for greater communication, coordination, and cooperation among mission schedulers. These schedulers must jointly allocate scarce shared resources among the various operational and mission oriented activities while adhering to all constraints. This scheduling environment is complicated by such factors as the presence of varying perspectives and conflicting objectives among the schedulers, the need for different schedulers to work in parallel, and limited communication among schedulers. Smooth interaction among schedulers requires the use of protocols that govern such issues as resource sharing, authority to update the schedule, and communication of updates. This paper addresses the development and characteristics of such protocols and their use in a distributed scheduling environment that incorporates computer-aided scheduling tools. An example problem is drawn from the domain of space shuttle mission planning.

  2. Dysphonia risk screening protocol

    PubMed Central

    Nemr, Katia; Simões-Zenari, Marcia; da Trindade Duarte, João Marcos; Lobrigate, Karen Elena; Bagatini, Flavia Alves

    2016-01-01

    OBJECTIVE: To propose and test the applicability of a dysphonia risk screening protocol with score calculation in individuals with and without dysphonia. METHOD: This descriptive cross-sectional study included 365 individuals (41 children, 142 adult women, 91 adult men and 91 seniors) divided into a dysphonic group and a non-dysphonic group. The protocol consisted of 18 questions and a score was calculated using a 10-cm visual analog scale. The measured value on the visual analog scale was added to the overall score, along with other partial scores. Speech samples allowed for analysis/assessment of the overall degree of vocal deviation and initial definition of the respective groups and after six months, the separation of the groups was confirmed using an acoustic analysis. RESULTS: The mean total scores were different between the groups in all samples. Values ranged between 37.0 and 57.85 in the dysphonic group and between 12.95 and 19.28 in the non-dysphonic group, with overall means of 46.09 and 15.55, respectively. High sensitivity and specificity were demonstrated when discriminating between the groups with the following cut-off points: 22.50 (children), 29.25 (adult women), 22.75 (adult men), and 27.10 (seniors). CONCLUSION: The protocol demonstrated high sensitivity and specificity in differentiating groups of individuals with and without dysphonia in different sample groups and is thus an effective instrument for use in voice clinics. PMID:27074171

  3. Satellite Communications Using Commercial Protocols

    NASA Technical Reports Server (NTRS)

    Ivancic, William D.; Griner, James H.; Dimond, Robert; Frantz, Brian D.; Kachmar, Brian; Shell, Dan

    2000-01-01

    NASA Glenn Research Center has been working with industry, academia, and other government agencies in assessing commercial communications protocols for satellite and space-based applications. In addition, NASA Glenn has been developing and advocating new satellite-friendly modifications to existing communications protocol standards. This paper summarizes recent research into the applicability of various commercial standard protocols for use over satellite and space- based communications networks as well as expectations for future protocol development. It serves as a reference point from which the detailed work can be readily accessed. Areas that will be addressed include asynchronous-transfer-mode quality of service; completed and ongoing work of the Internet Engineering Task Force; data-link-layer protocol development for unidirectional link routing; and protocols for aeronautical applications, including mobile Internet protocol routing for wireless/mobile hosts and the aeronautical telecommunications network protocol.

  4. Robust Optimization of Biological Protocols

    PubMed Central

    Flaherty, Patrick; Davis, Ronald W.

    2015-01-01

    When conducting high-throughput biological experiments, it is often necessary to develop a protocol that is both inexpensive and robust. Standard approaches are either not cost-effective or arrive at an optimized protocol that is sensitive to experimental variations. We show here a novel approach that directly minimizes the cost of the protocol while ensuring the protocol is robust to experimental variation. Our approach uses a risk-averse conditional value-at-risk criterion in a robust parameter design framework. We demonstrate this approach on a polymerase chain reaction protocol and show that our improved protocol is less expensive than the standard protocol and more robust than a protocol optimized without consideration of experimental variation. PMID:26417115

  5. Protocols for multisatellite military networks

    NASA Astrophysics Data System (ADS)

    Kolavennu, V. R.; Aronson, M. H.; Sites, M. J.

    The performance of a number of network control protocols applicable to multisatellite networks using single and multiple antenna beams is evaluated. The protocols analyzed include: token passing, polled TDMA, adaptive TDMA, and a reservation assignment with TDMA orderwire. The effects of varying the number of network terminals in the system, message arrival rates and length, propagation delay, and interleaver span-times on the performance of the protocols are investigated. The capabilities of a reservation assignment protocol with slotted-Aloha orderwire and an in-band network control protocol with congestion control and multiple user priorities are examined. It is observed that the token passing protocol is most applicable to an EHF tactical network; the reservation assignment protocol is suited to networks with many terminals requiring short, bursty data communication capability; and the in-band network control protocol is useful for tactical networks that require interoperability.

  6. A Systematic Review of the Free-Pour Assessment: Implications for Research, Assessment and Intervention.

    PubMed

    Schultz, Nicole R; Kohn, Carolynn S; Schmerbauch, Megan; Correia, Christopher J

    2017-03-13

    Excessive alcohol consumption is a major concern. Alcohol consumption data are typically collected via self-report questionnaires. However, research has suggested that individuals are unable to identify a standard drink size and that their self-report may be influenced by certain environmental conditions, calling into question the reliability and validity of self-report. The free-pour is an objective measure that may provide a clearer picture of current alcohol consumption trends, individuals' knowledge of standard drink sizes, and accuracy of self-report. This systematic review of existing free-pour assessment methods suggests that individuals are unable to identify and pour standard drink sizes, with the largest discrepancies occurring for liquor and wine pours and pours into larger and wider glasses. Additional variables that appear to influence pouring behavior are gender, pouring location (e.g., home or laboratory), pouring task (e.g., selecting a line or physically pouring), and drinking history; however, additional research is necessary to better understand the effects of these variables on pouring behavior. These findings have important implications for the accuracy of self-report measures, as well as clinical implications for alcohol use screenings, alcohol education courses, and brief interventions for alcohol use. The systematic review concludes with recommendations for practical applications and future research of the free-pour assessment. (PsycINFO Database Record

  7. Communication complexity protocols for qutrits

    SciTech Connect

    Tamir, Boaz

    2007-03-15

    Consider a function where its entries are distributed among many parties. Suppose each party is allowed to send only a limited amount of information to a referee. The referee can use a classical protocol to compute the value of the global function. Is there a quantum protocol improving the results of all classical protocols? In a recent work Brukner et al. showed the deep connection between such problems and the theory of Bell inequalities. Here we generalize the theory to trits. There, the best classical protocol fails whereas the quantum protocol yields the correct answer.

  8. Influence of delayed pouring on irreversible hydrocolloid properties.

    PubMed

    Rodrigues, Stéfani Becker; Augusto, Carolina Rocha; Leitune, Vicente Castelo Branco; Samuel, Susana Maria Werner; Collares, Fabrício Mezzomo

    2012-01-01

    The aim of this study was to evaluate the physical properties of irreversible hydrocolloid materials poured immediately and after different storage periods. Four alginates were tested: Color Change (Cavex); Hydrogum (Zhermack); Hydrogum 5 (Zhermack); and Hydro Print Premium (Coltene). Their physical properties, including the recovery from deformation (n = 3), compressive strength (n = 3), and detail reproduction and gypsum compatibility (n = 3), were analyzed according to ANSI/ADA specification no. 18. Specimens were stored at 23ºC and humidity and were then poured with gypsum immediately and after 1, 2, 3, 4, and 5 days. The data were analyzed by two-way analysis of variance (ANOVA) and Tukey's test at p < 0.05. All of the alginate impression materials tested exhibited detail reproduction and gypsum compatibility at all times. Hydro Print Premium and Hydrogum 5 showed recovery from deformation, as established by ANSI/ADA specification no. 18, after 5 days of storage. As the storage time increased, the compressive strength values also increased. Considering the properties of compounds' recovery from deformation, compressive strength, and detail reproduction and gypsum compatibility, irreversible hydrocolloids should be poured immediately.

  9. Optical Circuit Switched Protocol

    NASA Technical Reports Server (NTRS)

    Monacos, Steve P. (Inventor)

    2000-01-01

    The present invention is a system and method embodied in an optical circuit switched protocol for the transmission of data through a network. The optical circuit switched protocol is an all-optical circuit switched network and includes novel optical switching nodes for transmitting optical data packets within a network. Each optical switching node comprises a detector for receiving the header, header detection logic for translating the header into routing information and eliminating the header, and a controller for receiving the routing information and configuring an all optical path within the node. The all optical path located within the node is solely an optical path without having electronic storage of the data and without having optical delay of the data. Since electronic storage of the header is not necessary and the initial header is eliminated by the first detector of the first switching node. multiple identical headers are sent throughout the network so that subsequent switching nodes can receive and read the header for setting up an optical data path.

  10. Protocol Architecture Model Report

    NASA Technical Reports Server (NTRS)

    Dhas, Chris

    2000-01-01

    NASA's Glenn Research Center (GRC) defines and develops advanced technology for high priority national needs in communications technologies for application to aeronautics and space. GRC tasked Computer Networks and Software Inc. (CNS) to examine protocols and architectures for an In-Space Internet Node. CNS has developed a methodology for network reference models to support NASA's four mission areas: Earth Science, Space Science, Human Exploration and Development of Space (REDS), Aerospace Technology. This report applies the methodology to three space Internet-based communications scenarios for future missions. CNS has conceptualized, designed, and developed space Internet-based communications protocols and architectures for each of the independent scenarios. The scenarios are: Scenario 1: Unicast communications between a Low-Earth-Orbit (LEO) spacecraft inspace Internet node and a ground terminal Internet node via a Tracking and Data Rela Satellite (TDRS) transfer; Scenario 2: Unicast communications between a Low-Earth-Orbit (LEO) International Space Station and a ground terminal Internet node via a TDRS transfer; Scenario 3: Multicast Communications (or "Multicasting"), 1 Spacecraft to N Ground Receivers, N Ground Transmitters to 1 Ground Receiver via a Spacecraft.

  11. Licklider Transmission Protocol Implementation

    NASA Technical Reports Server (NTRS)

    Burleigh, Scott C.; Krupiarz, Chris

    2011-01-01

    This software is an implementation of the Licklider Transmission Protocol (LTP), a communications protocol intended to support the Bundle Protocol in Delay-Tolerant Network (DTN) operations. LTP is designed to provide retransmission-based reliability over links characterized by extremely long message round-trip times and/or frequent interruptions in connectivity. Communication in interplanetary space is the most prominent example of this sort of environment, and LTP is principally aimed at supporting long-haul reliable transmission over deep-space RF links. Like any reliable transport service employing ARQ (Automatic Repeat re-Quests), LTP is stateful. In order to assure the reception of a block of data it has sent, LTP must retain for possible retransmission all portions of that block which might not have been received yet. In order to do so, it must keep track of which portions of the block are known to have been received so far, and which are not, together with any additional information needed for purposes of retransmitting part, or all, of the block. Long round-trip times mean substantial delay between the transmission of a block of data and the reception of an acknowledgement from the block s destination, signaling arrival of the block. If LTP postponed transmission of additional blocks of data until it received acknowledgement of the arrival of all prior blocks, valuable opportunities to use what little deep space transmission bandwidth is available would be forever lost. For this reason, LTP is based in part on a notion of massive state retention. Any number of requested transmission conversations (sessions) may be concurrently in flight at various displacements along the link between two LTP engines, and the LTP engines must necessarily retain transmission status and retransmission resources for all of them. Moreover, if any of the data of a given block are lost en route, it will be necessary to retain the state of that transmission during an additional

  12. CONCRETE POURS HAVE PRODUCED A REINFORCED SUPPORT BASE FOR MTR ...

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

    CONCRETE POURS HAVE PRODUCED A REINFORCED SUPPORT BASE FOR MTR REACTOR. PIPE TUNNEL IS UNDER CONSTRUCTION AT CENTER OF VIEW. PIPES WILL CARRY RADIOACTIVE WATER FROM REACTOR TO WATER PROCESS BUILDING. CAMERA LOOKS SOUTH INTO TUNNEL ALONG WEST SIDE OF REACTOR BASE. TWO CAISSONS ARE AT LEFT SIDE OF VIEW. NOTE "WINDOW" IN SOUTH FACE OF REACTOR BASE AND ALSO GROUP OF PENETRATIONS TO ITS LEFT. INL NEGATIVE NO. 733. Unknown Photographer, 10/6/1950 - Idaho National Engineering Laboratory, Test Reactor Area, Materials & Engineering Test Reactors, Scoville, Butte County, ID

  13. Space Wire Upper Layer Protocols

    NASA Technical Reports Server (NTRS)

    Rakow, Glenn; Schnurr, Richard; Gilley, Daniel; Parkes, Steve

    2004-01-01

    This viewgraph presentation addresses efforts to provide a streamlined approach for developing SpaceWire Upper layer protocols which allows industry to drive standardized communication solutions for real projects. The presentation proposes a simple packet header that will allow flexibility in implementing a diverse range of protocols.

  14. Distributed simulation of network protocols

    NASA Technical Reports Server (NTRS)

    Paterra, Frank; Overstreet, C. Michael; Maly, Kurt J.

    1990-01-01

    Simulations of high speed network protocols are very CPU intensive operations requiring very long run times. Very high speed network protocols (Gigabit/sec rates) require longer simulation runs in order to reach a steady state, while at the same time requiring additional CPU processing for each unit of time because of the data rates for the traffic being simulated. As protocol development proceeds and simulations provide insights into any problems associated with the protocol, the simulation model often must be changed to generate additional or finer statistical performance information. Iterating on this process is very time consuming due to the required run times for the simulation models. The results of the efforts to distribute a high speed ring network protocol, Carrier Sensed Multiple Access/Ring Network (CSMA/RN), are presented.

  15. Protocols.io: Virtual Communities for Protocol Development and Discussion.

    PubMed

    Teytelman, Leonid; Stoliartchouk, Alexei; Kindler, Lori; Hurwitz, Bonnie L

    2016-08-01

    The detailed know-how to implement research protocols frequently remains restricted to the research group that developed the method or technology. This knowledge often exists at a level that is too detailed for inclusion in the methods section of scientific articles. Consequently, methods are not easily reproduced, leading to a loss of time and effort by other researchers. The challenge is to develop a method-centered collaborative platform to connect with fellow researchers and discover state-of-the-art knowledge. Protocols.io is an open-access platform for detailing, sharing, and discussing molecular and computational protocols that can be useful before, during, and after publication of research results.

  16. [Premature ovarian failure: which protocols?].

    PubMed

    Merviel, P; Lourdel, E; Boulard, V; Cabry, R; Claeys, C; Oliéric, M-F; Sanguinet, P; Brasseur, F; Henri, I; Copin, H

    2008-09-01

    This review shows the results of the various studies concerning the protocols applied to the women presenting a premature ovarian failure. Will be thus analyzed the natural cycles (or semi-natural), the increase in the dose of gonadotrophins, the clomiphene citrate and the anti-aromatases, the protocols with GnRH agonists long, short, stop or microdoses, the protocols with GnRH antagonists and the adjuvant treatments: aspirin, nitric oxyde, recombinant LH recombining, growth hormone and androgens. The interest of several protocols is to collect a sufficient number of oocytes (and thus of embryos to be transferred), making it possible to obtain reasonable rates of pregnancy. However, it arises that the rates of pregnancy observed among these women depend not only on their ovarian reserve and their age, but are also function of the type of infertility, of the cycle number and the uterus.

  17. EPA Protocol Gas Verification Program

    EPA Science Inventory

    Accurate compressed gas calibration standards are needed to calibrate continuous emission monitors (CEMs) and ambient air quality monitors that are being used for regulatory purposes. US Environmental Protection Agency (EPA) established its traceability protocol to ensure that co...

  18. ABM clinical protocol #20: Engorgement.

    PubMed

    Berens, Pam

    2009-06-01

    A central goal of The Academy of Breastfeeding Medicine is the development of clinical protocols for managing common medical problems that may impact breastfeeding success. These protocols serve only as guidelines for the care of breastfeeding mothers and infants and do not delineate an exclusive course of treatment or serve as standards of medical care. Variations in treatment may be appropriate according to the needs of an individual patient.

  19. Treatment Protocols as Hierarchical Structures

    PubMed Central

    Ben-Bassat, Moshe; Carlson, Richard W.; Puri, Vinod K.; Weil, Max Harry

    1978-01-01

    We view a treatment protocol as a hierarchical structure of therapeutic modules. The lowest level of this structure consists of individual therapeutic actions. Combinations of individual actions define higher level modules, which we call routines. Routines are designed to manage limited clinical problems, such as the routine for fluid loading to correct hypovolemia. Combinations of routines and additional actions, together with comments, questions, or precautions organized in a branching logic, in turn, define the treatment protocol for a given disorder. Adoption of this modular approach may facilitate the formulation of treatment protocols, since the physician is not required to prepare complex flowcharts. This hierarchical approach also allows protocols to be updated and modified in a flexible manner. By use of such a standard format, individual components may be fitted together to create protocols for multiple disorders. The technique is suited for computer implementation. We believe that this hierarchical approach may facilitate standarization of patient care as well as aid in clinical teaching. A protocol for acute pancreatitis is used to illustrate this technique.

  20. Caracterisation thermique de modules de refroidissement pour la photovoltaique concentree

    NASA Astrophysics Data System (ADS)

    Collin, Louis-Michel

    Pour rentabiliser la technologie des cellules solaires, une reduction du cout d'exploitation et de fabrication est necessaire. L'utilisation de materiaux photovoltaiques a un impact appreciable sur le prix final par quantite d'energie produite. Une technologie en developpement consiste a concentrer la lumiere sur les cellules solaires afin de reduire cette quantite de materiaux. Or, concentrer la lumiere augmente la temperature de la cellule et diminue ainsi son efficacite. Il faut donc assurer a la cellule un refroidissement efficace. La charge thermique a evacuer de la cellule passe au travers du recepteur, soit la composante soutenant physiquement la cellule. Le recepteur transmet le flux thermique de la cellule a un systeme de refroidissement. L'ensemble recepteur-systeme de refroidissement se nomme module de refroidissement. Habituellement, la surface du recepteur est plus grande que celle de la cellule. La chaleur se propage donc lateralement dans le recepteur au fur et a mesure qu'elle traverse le recepteur. Une telle propagation de la chaleur fournit une plus grande surface effective, reduisant la resistance thermique apparente des interfaces thermiques et du systeme de refroidissement en aval vers le module de refroidissement. Actuellement, aucune installation ni methode ne semble exister afin de caracteriser les performances thermiques des recepteurs. Ce projet traite d'une nouvelle technique de caracterisation pour definir la diffusion thermique du recepteur a l'interieur d'un module de refroidissement. Des indices de performance sont issus de resistances thermiques mesurees experimentalement sur les modules. Une plateforme de caracterisation est realisee afin de mesurer experimentalement les criteres de performance. Cette plateforme injecte un flux thermique controle sur une zone localisee de la surface superieure du recepteur. L'injection de chaleur remplace le flux thermique normalement fourni par la cellule. Un systeme de refroidissement est installe

  1. VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER ...

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

    VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER STATION IN THE CASTING SHOP. (OTHER UNITS MELT BRASS ALLOYS.) THIS IS THE SOUTHERNMOST FURNACE OF THE FOUR PRESENTLY IN SITU. THE CURRENT CASTING SHOP WAS CONSTRUCTED DURING THE EARLY 1970'S, REPLACING THE ORIGINAL PRE-WWI FACILITY. STATIONS #02,03, AND 04 EACH CONSIST OF A HOLDER FLANKED BY A PAIR OF 800 KW ELECTRIC MELTERS. THE HOLDER IS RATED AT 85,000 LBS. SHAKER BOXES, LOCATED AT THE REAR OF EACH MELTER SUPPLY THE MIXTURE OF INGREDIENTS REQUIRED FOR EACH PARTICULAR ALLOY. ONE MEMBER OF THE THREE-MAN CASTING TEAMS IS RESPONSIBLE FOR SHAKING METAL INTO THE MELTERS. IN THE LOWER RIGHT ARE SHOWN THE MOLD STORAGE AREA AND THE FURNACE BUILDERS' AREA FOR CHIPPING AND REBRICKING OFF-LINE UNITS. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

  2. VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER ...

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

    VIEW OF THE #67 HOLDING FURNACE POURING AT #04 COPPER STATION IN THE CASTING SHOP. (OTHER UNITS MELT BRASS ALLOYS.) THIS IS THE SOUTHERNMOST FURNACE OF THE FOUR PRESENTLY IN SITU. THE CURRENT CASTING SHOP WAS CONSTRUCTED DURING THE EARLY 1970'S, REPLACING THE ORIGINAL PRE-WWI FACILITY. STATIONS #02, 03, AND 04 EACH CONSIST OF A HOLDER FLANKED BY A PAIR OF 800 KW ELECTRIC MELTERS. THE HOLDER IS REHEATED AT 85,000 LBS. SHAKER BOX, LOCATED AT THE REAR OF EACH MELTER SUPPLY THE MIXTURE OF INGREDIENTS REQUIRED FOR EACH PARTICULAR ALLOY. ONE MEMBER OF THE THREE-MAN CASTING TEAMS IS RESPONSIBLE FOR SHAKING METAL INTO THE MELTERS. IN THE LOWER RIGHT ARE SHOWN THE MOLD STORAGE AREA AND THE FURNACE BUILDERS' AREA FOR CHIPPING AND REBRICKING OFF-LINE UNITS. - American Brass Foundry, 70 Sayre Street, Buffalo, Erie County, NY

  3. Copolymeric pour-point depressant for diesel fuel

    SciTech Connect

    Ivanov, V.I.; Dadyko, V.A.; Dushechkin, A.P.; Shapkina, L.N.

    1984-03-01

    This article considers the use of a pour-point depressant consisting of a mixture of ethylene with methyl methacrylate (EMMA) and ethylene with vinyl acetate (EVA) to improve the low-temperature indexes of diesel fuels. It is determined that the greatest effect with respect to limiting filterability temperature from the addition of EMMA is achieved with an EVA content of approximately 0.04%. The use of both a copolymer promoting the formation of a large number of crystallization centers (EMMA) and a copolymer that is a good modifier of the wax crystal surface (EVA) leads to a limitation of the crystal growth and preservation of the fine-crystal structure as the fuel temperature is lowered.

  4. Protocols.io: Virtual Communities for Protocol Development and Discussion

    PubMed Central

    Stoliartchouk, Alexei; Kindler, Lori; Hurwitz, Bonnie L.

    2016-01-01

    The detailed know-how to implement research protocols frequently remains restricted to the research group that developed the method or technology. This knowledge often exists at a level that is too detailed for inclusion in the methods section of scientific articles. Consequently, methods are not easily reproduced, leading to a loss of time and effort by other researchers. The challenge is to develop a method-centered collaborative platform to connect with fellow researchers and discover state-of-the-art knowledge. Protocols.io is an open-access platform for detailing, sharing, and discussing molecular and computational protocols that can be useful before, during, and after publication of research results. PMID:27547938

  5. L'effet Peltier appliqué à la conception et la réalisation d'un nouveau capteur de débit massique

    NASA Astrophysics Data System (ADS)

    Wattiau, F.; Gaviot, E.; Thery, P.

    1993-08-01

    éalisation d'un nouveau capteur de débit massique basé sur l'effet Peltier. Le capteur en forme de circuit imprimé bimétallique, comporte plusieurs pistes métalliques continues parallèles entre elles et partiellement recouvertes par un grand nombre de dépôts électrolytiques de nature différente. Un tel circuit se comporte comme un circuit thermoélectrique classique dans lequel les parties homogènes non recouvertes par le dépôt électrolytique constituent le premier conducteur du couple, les parties plaquées constituant le second conducteur. La méthode de mesure consiste à faire passer un courant électrique dans une ou plusieurs pistes constituant le circuit émetteur de façon à générer par effet Peltier des gradients thermiques qui seront détectés par un circuit détecteur identique placé à proximité. Dans le cas particulier d'un fluide au repos, la f.e.m. détectée par le circuit détecteur dépend de la conductivité thermique du fluide. Lorsque le fluide est en mouvement relatif par rapport au circuit, il est possible de détecter une f.e.m. dépendant en grandeur et en signe de la vitesse d'écoulement du fluide. A titre d'application un capteur de débit massique a été réalisé en plaçant les circuits thermoélectriques dans une canalisation parcourue par le fluide en mouvement.

  6. Protocol Handbook - A Guide for the Base Protocol Officer

    DTIC Science & Technology

    1986-04-01

    rotighou I lIme 1.1 ni eml Slates Cioi mm dale of den iii lilt ough press , dent a ml its Ic rri tories and possess ions: U mit- ind io, television, r oil...At an official f unction, thc protocol of fjce:- or aide stands nearest the door and a little to the sine or rhe uln-, and anounces the names of the...Pennsylvania: The Stackpole Company, 1959. 8. Wood, John R. and Serres, Jean. Diplomatic Ceremonial and Protocol. New York: Columbia University Press

  7. Lightweight Distance Bounding Protocol against Relay Attacks

    NASA Astrophysics Data System (ADS)

    Kim, Jin Seok; Cho, Kookrae; Yum, Dae Hyun; Hong, Sung Je; Lee, Pil Joong

    Traditional authentication protocols are based on cryptographic techniques to achieve identity verification. Distance bounding protocols are an enhanced type of authentication protocol built upon both signal traversal time measurement and cryptographic techniques to accomplish distance verification as well as identity verification. A distance bounding protocol is usually designed to defend against the relay attack and the distance fraud attack. As there are applications to which the distance fraud attack is not a serious threat, we propose a streamlined distance bounding protocol that focuses on the relay attack. The proposed protocol is more efficient than previous protocols and has a low false acceptance rate under the relay attack.

  8. A Simple XML Producer-Consumer Protocol

    NASA Technical Reports Server (NTRS)

    Smith, Warren; Gunter, Dan; Quesnel, Darcy

    2000-01-01

    This document describes a simple XML-based protocol that can be used for producers of events to communicate with consumers of events. The protocol described here is not meant to be the most efficient protocol, the most logical protocol, or the best protocol in any way. This protocol was defined quickly and it's intent is to give us a reasonable protocol that we can implement relatively easily and then use to gain experience in distributed event services. This experience will help us evaluate proposals for event representations, XML-based encoding of information, and communication protocols. The next section of this document describes how we represent events in this protocol and then defines the two events that we choose to use for our initial experiments. These definitions are made by example so that they are informal and easy to understand. The following section then proceeds to define the producer-consumer protocol we have agreed upon for our initial experiments.

  9. Developpement et application d'un systeme mobile de laser terrestre pour quantifier le bilan sedimentaire des plages

    NASA Astrophysics Data System (ADS)

    Van-Wierts, Stefanie

    Au Québec maritime, l'érosion côtière est une problématique d'envergure, notamment sur les côtes de formations meubles. Les plages ont un rôle de zone tampon ayant comme fonction naturelle d'absorber l'énergie des vagues et donc d'assurer l'équilibre de certains écosystèmes et le maintien de l'écoumène en réduisant l'érosion de la côte. Les méthodes d'acquisition conventionnelles ne permettent pas de quantifier convenablement les changements morphosédimentaires d'une plage à l'échelle des cellules hydrosédimentaires. Le manque de méthode d'acquisition fiable et de données quantitatives mène à une surestimation ou à une sous-estimation de la disponibilité sédimentaire d'un système côtier. Pour contrer ces lacunes et afin de minimiser les coûts d'acquisition, un nouveau système mobile de LiDAR terrestre a été mis en place, permettant d'acquérir des données topographiques de l'estran, de la haute plage et des falaises. Le système multicapteurs comprend un LiDAR, un système de navigation à haute précision (IMU et D-GPS) et une caméra. L'ensemble des instruments et capteurs sont montés sur un véhicule de type tout-terrain. Le système a été évalué sur la zone côtière de la péninsule de Manicouagan. La comparaison des données LiDAR avec 1 050 points de référence géopositionnés au D-GPS montre une erreur verticale moyenne de 0,1 m sur les secteurs de plage. Les résultats montrent que le volume sédimentaire moyen des plages devant les zones où la ligne de rivage présente un ouvrage de protection en enrochement (12 m 3/m) est plus de trois fois plus faible que devant les secteurs à l'état naturel (35,5 m3/m). La moyenne des secteurs en transition, constituant les segments où une zone artificielle et une zone naturelle se chevauchent présentent un volume moyen de 28 m3/m. Aussi, les plages devant les secteurs anthropisés sont en moyenne près de 2 fois plus étroites (12,7 m) que devant les secteurs naturels (25

  10. Probability Distributions over Cryptographic Protocols

    DTIC Science & Technology

    2009-06-01

    2005-2969: SSL/TLS server implementation flaw in OpenSSL 0.9.7 and 0.9.8,” 2005. The MITRE Corporation. [8] J. A . Clark and J. L . Jacob, “Protocols are...733–736, IEEE Computer Society, 2007. [12] J. A . Clark and J. L . Jacob, “ A Survey of Authentication Protocol Literature, Version 1.0.” Unpublished...Notes in Computer Science, pp. 523–537. Heidelberg, Germany: Springer Berlin, 2007. [14] J. A . Clark and J. L . Jacob, “Searching for a solution

  11. Protocol Writing in Clinical Research

    PubMed Central

    Al-Jundi, Azzam

    2016-01-01

    Writing a research proposal is probably one of the most challenging and difficult task as research is a new area for the majority of postgraduates and new researchers. The purpose of this article is to summarize the most important steps and necessary guidelines for producing a standard research protocol. Academic and administrative success of any project is usually determined by acquiring a grant for the related field of research. Hence, the quality of a protocol is primarily required to achieve success in this scientific competition. PMID:28050522

  12. Developing protocols for obstetric emergencies.

    PubMed

    Roth, Cheryl K; Parfitt, Sheryl E; Hering, Sandra L; Dent, Sarah A

    2014-01-01

    There is potential for important steps to be missed in emergency situations, even in the presence of many health care team members. Developing a clear plan of response for common emergencies can ensure that no tasks are redundant or omitted, and can create a more controlled environment that promotes positive health outcomes. A multidisciplinary team was assembled in a large community hospital to create protocols that would help ensure optimum care and continuity of practice in cases of postpartum hemorrhage, shoulder dystocia, emergency cesarean surgical birth, eclamptic seizure and maternal code. Assignment of team roles and responsibilities led to the evolution of standardized protocols for each emergency situation.

  13. A highly reliable LAN protocol

    NASA Astrophysics Data System (ADS)

    Weaver, A. C.

    1986-10-01

    As a research project for NASA's Langley Research Center, a variation on the military standard for avionics buses was developed to increase fault tolerance. The resulting protocol, called implicit token passing (ITP), replaces an explicit token with brief 'soundoff' messages from all nodes participating on the LAN. ITP features high throughput and bounded message delay, and achieves high reliability through tolerance of failed nodes and automatic resynchronization when failed nodes are revived. The protocol is ideally suited for a bus topology and fiber optic media.

  14. FTP Extensions for Variable Protocol Specification

    NASA Technical Reports Server (NTRS)

    Allman, Mark; Ostermann, Shawn

    2000-01-01

    The specification for the File Transfer Protocol (FTP) assumes that the underlying network protocols use a 32-bit network address and a 16-bit transport address (specifically IP version 4 and TCP). With the deployment of version 6 of the Internet Protocol, network addresses will no longer be 32-bits. This paper species extensions to FTP that will allow the protocol to work over a variety of network and transport protocols.

  15. Fabrication de transistors monoelectroniques pour la detection de charge

    NASA Astrophysics Data System (ADS)

    Richard, Jean-Philippe

    Le transistor monoelectro'nique (SET) est un candidat que l'on croyait avoir la capacite de remplacer le transistor des circuits integres actuel (MOSFET). Pour des raisons de faible gain en voltage, d'impedance de sortie elevee et de sensibilite aux fluctuations de charges, il est considere aujourd'hui qu'un hybride tirant profit des deux technologies est plus avantageux. En exploitant sa lacune d'etre sensible aux variations de charge, le SET est davantage utilise dans des applications ou la detection de charge s'avere indispensable, notamment dans les domaines de la bio-detection et de l'informatique quantique. Ce memoire presente une etude du transistor monoelectronique utilise en tant que detecteur de charge. La methode de fabrication est basee sur le procede nanodamascene developpe par Dubuc et al. [11] permettant au transistor monoelectronique de fonctionner a temperature ambiante. La temperature d'operation etant intimement liee a la geometrie du SET, la cle du procede nanodamascene reside dans le polissage chimico-mecanique (CMP) permettant de reduire l'epaisseur des SET jusqu'a des valeurs de quelques nanametres. Dans ce projet de maitrise, nous avons cependant opte pour que le SET soit opere a temperature cryogenique. Une faible temperature d'operation permet le relachement des contraintes de dimensions des dispositifs. En considerant les variations de procedes normales pouvant survenir lors de la fabrication, la temperature d'operation maximale calculee en conception s'etend de 27 K a 90 K, soit une energie de charge de 78 meV a 23 meV. Le gain du detecteur de charge etant dependant de la distance de couplage, les resultats de simulations demontrent que cette distance doit etre de 200 nm pour que la detection de charge soit optimale. Les designs concus sont ensuite fabriques sur substrat d'oxyde de silicium. Les resultats de fabrication de SET temoignent de la robustesse du procede nanodamascene. En effet, les dimensions atteintes experimentalement s

  16. Ressources pour les personnes atteintes de démence

    PubMed Central

    Frank, Christopher; Feldman, Sid; Schulz, Mary

    2011-01-01

    Résumé Objectif Résumer les services offerts par la Société Alzheimer et discuter des autres sources de soutien et d’information à la disposition des personnes atteintes de démence. Sources de l’information On a fait une recension dans Ovid MEDLINE à l’aide des expressions dementia, Alzheimer disease, community health services utilization et caregiver stress. Message principal Il a été démontré qu’il est bénéfique aux patients et aux aidants si le diagnostic de la démence est posé tôt dans la maladie. Une consultation auprès de la Société Alzheimer peut aider dans la prise en charge non pharmacologique de la démence au moment du diagnostic et en tout temps durant l’évolution de la maladie. Parmi les services offerts, on peut mentionner des renseignements au sujet de la démence, le soutien aux aidants, la coordination des services communautaires et une grande diversité de ressources écrites à l’intention des patients et des aidants. Là où il est offert, le programme Premier lien peut aider avec l’orientation vers des services en minimisant la nécessité pour les patients ou les aidants de communiquer eux-mêmes avec les filiales locales de la Société. On discute aussi d’autres ressources, y compris les soins de répit et les approches technologiques pour prendre en charge l’errance. Conclusion La Société Alzheimer joue un rôle important dans la prise en charge de la démence et les médecins de famille devraient toujours envisager d’y référer leurs patients au moment du diagnostic, quelle que soit la gravité de l’état. Premier lien, quand il est accessible, peut faciliter le contact avec les services. Des ressources comme les soins de répit et les programmes de jour devraient toujours être considérés lorsqu’ils sont disponibles.

  17. Heat transfer modelling of the saltstone pouring and curing process. Task Number: 93-016-0

    SciTech Connect

    Shadday, M.A. Jr.

    1993-11-01

    A byproduct of the in tank precipitation, ITP, process will be 25 million gallons of low-level salt solution. This salt solution will be mixed with cement and a flyash/slag mixture and solidified in surface vaults in the Z-area Saltstone Facility. The curing process of saltstone involves exothermic reactions, and there is a maximum temperature limit of 90{degree}C for the curing saltstone. If this temperature limit is exceeded, the physical properties of the saltstone can be degraded. A heat transfer model of the saltstone pouring and curing process has been developed that predicts transient temperature distributions in the curing saltstone. The purpose of this model is to predict peak temperatures as functions of the several independent variables in this process: pour temperature, the pour schedule, and seasonal variations in the ambient temperature. The peak temperature of the saltstone is very sensitive to the internal heat generation that accompanies the curing process. Most of the energy is released over a short period of several hours, and the balance is released slowly over a period of time that can be in excess of a month. This long term low level internal heat generation is difficult to measure in laboratory calorimetry tests, and it can significantly influence the peak temperature in the saltstone. Due to the low thermal conductivity of the saltstone, the central region of the poured saltstone will essentially heat up adiabatically. The time dependence of the internal heat generation rate was determined from an analysis of the 1991 pilot pour test. With a pour schedule of eight hours a day and five days a week in the summer, the model predicts that the saltstone will have a peak temperature of 98 C with a pour temperature of 45 C, and a peak temperature of 88 C with a pour temperature of 30 C. With a pour schedule of three days a week, the peak temperature will be 88{degree}C with a pour temperature of 45 C, and 80 C with a pour temperature of 30 C.

  18. FIELD SAMPLING PROTOCOLS AND ANALYSIS

    EPA Science Inventory

    I have been asked to speak again to the environmental science class regarding actual research scenarios related to my work at Kerr Lab. I plan to discuss sampling protocols along with various field analyses performed during sampling activities. Many of the students have never see...

  19. U.S. prebreathe protocol.

    PubMed

    McBarron JW 2nd

    1994-01-01

    This paper identifies and describes the prebreathe protocol currently used by the U.S. Space Shuttle Program to provide astronauts the capability to safely perform extravehicular activity. A comparison of planned vs actual prebreathe experience through the STS-37 Mission is also provided.

  20. Metabolomics protocols for filamentous fungi.

    PubMed

    Gummer, Joel P A; Krill, Christian; Du Fall, Lauren; Waters, Ormonde D C; Trengove, Robert D; Oliver, Richard P; Solomon, Peter S

    2012-01-01

    Proteomics and transcriptomics are established functional genomics tools commonly used to study filamentous fungi. Metabolomics has recently emerged as another option to complement existing techniques and provide detailed information on metabolic regulation and secondary metabolism. Here, we describe broad generic protocols that can be used to undertake metabolomics studies in filamentous fungi.

  1. A Student Teamwork Induction Protocol

    ERIC Educational Resources Information Center

    Kamau, Caroline; Spong, Abigail

    2015-01-01

    Faulty group processes have harmful effects on performance but there is little research about intervention protocols to pre-empt them in higher education. This naturalistic experiment compared a control cohort with an inducted cohort. The inducted cohort attended a workshop, consultations, elected a leader and used tools (a group log and group…

  2. Bundle Security Protocol for ION

    NASA Technical Reports Server (NTRS)

    Burleigh, Scott C.; Birrane, Edward J.; Krupiarz, Christopher

    2011-01-01

    This software implements bundle authentication, conforming to the Delay-Tolerant Networking (DTN) Internet Draft on Bundle Security Protocol (BSP), for the Interplanetary Overlay Network (ION) implementation of DTN. This is the only implementation of BSP that is integrated with ION.

  3. Refinement of primary Si grains in Al-20%Si alloy slurry through serpentine channel pouring process

    NASA Astrophysics Data System (ADS)

    Zheng, Zhi-kai; Mao, Wei-min; Liu, Zhi-yong; Wang, Dong; Yue, Rui

    2016-05-01

    In this study, a serpentine channel pouring process was used to prepare the semi-solid Al-20%Si alloy slurry and refine primary Si grains in the alloy. The effects of the pouring temperature, number of curves in the serpentine channel, and material of the serpentine channel on the size of primary Si grains in the semi-solid Al-20%Si alloy slurry were investigated. The results showed that the pouring temperature, number of the curves, and material of the channel strongly affected the size and distribution of the primary Si grains. The pouring temperature exerted the strongest effect, followed by the number of the curves and then the material of the channel. Under experimental conditions of a four-curve copper channel and a pouring temperature of 701°C, primary Si grains in the semi-solid Al-20%Si alloy slurry were refined to the greatest extent, and the lath-like grains were changed into granular grains. Moreover, the equivalent grain diameter and the average shape coefficient of primary Si grains in the satisfactory semi-solid Al-20%Si alloy slurry were 24.4 μm and 0.89, respectively. Finally, the refinement mechanism and distribution rule of primary Si grains in the slurry prepared through the serpentine channel pouring process were analyzed and discussed.

  4. Solution saline hypertonique pour la bronchiolite chez les bébés

    PubMed Central

    Grewal, Simran; Goldman, Ran D.

    2015-01-01

    Résumé Question J’ai récemment reçu le rapport du congé de l’hôpital d’un patient de 1 an admis pour une bronchiolite. On y indiquait qu’il avait été traité, entre autres, avec une solution saline hypertonique inhalée. Cette thérapie est-elle recommandée pour les enfants en milieu de soins aigus? Réponse La bronchiolite, causée principalement par le virus respiratoire syncytial, est très commune en hiver. C’est la cause la plus fréquente d’hospitalisation durant l’enfance. Plusieurs bonnes études ont été effectuées au cours de la dernière décennie sur l’utilisation d’une solution saline hypertonique nébulisée pour la prise en charge de la bronchiolite; toutefois, leurs résultats sont conflictuels. Quoiqu’il puisse y avoir un rôle pour la solution saline hypertonique nébulisée chez les enfants hospitalisés pour une bronchiolite pendant plus de 3 jours, ce traitement dans d’autres milieux ne confère pas suffisamment de bienfaits pour recommander son utilisation.

  5. Accuracy of Multiple Pour Cast from Various Elastomer Impression Methods.

    PubMed

    Haralur, Satheesh B; Saad Toman, Majed; Ali Al-Shahrani, Abdullah; Ali Al-Qarni, Abdullah

    2016-01-01

    The accurate duplicate cast obtained from a single impression reduces the profession clinical time, patient inconvenience, and extra material cost. The stainless steel working cast model assembly consisting of two abutments and one pontic area was fabricated. Two sets of six each custom aluminum trays were fabricated, with five mm spacer and two mm spacer. The impression methods evaluated during the study were additional silicone putty reline (two steps), heavy-light body (one step), monophase (one step), and polyether (one step). Type IV gypsum casts were poured at the interval of one hour, 12 hours, 24 hours, and 48 hours. The resultant cast was measured with traveling microscope for the comparative dimensional accuracy. The data obtained were subjected to Analysis of Variance test at significance level <0.05. The die obtained from two-step putty reline impression techniques had the percentage of variation for the height -0.36 to -0.97%, while diameter was increased by 0.40-0.90%. The values for one-step heavy-light body impression dies, additional silicone monophase impressions, and polyether were -0.73 to -1.21%, -1.34%, and -1.46% for the height and 0.50-0.80%, 1.20%, and -1.30% for the width, respectively.

  6. Accuracy of Multiple Pour Cast from Various Elastomer Impression Methods

    PubMed Central

    Saad Toman, Majed; Ali Al-Shahrani, Abdullah; Ali Al-Qarni, Abdullah

    2016-01-01

    The accurate duplicate cast obtained from a single impression reduces the profession clinical time, patient inconvenience, and extra material cost. The stainless steel working cast model assembly consisting of two abutments and one pontic area was fabricated. Two sets of six each custom aluminum trays were fabricated, with five mm spacer and two mm spacer. The impression methods evaluated during the study were additional silicone putty reline (two steps), heavy-light body (one step), monophase (one step), and polyether (one step). Type IV gypsum casts were poured at the interval of one hour, 12 hours, 24 hours, and 48 hours. The resultant cast was measured with traveling microscope for the comparative dimensional accuracy. The data obtained were subjected to Analysis of Variance test at significance level <0.05. The die obtained from two-step putty reline impression techniques had the percentage of variation for the height −0.36 to −0.97%, while diameter was increased by 0.40–0.90%. The values for one-step heavy-light body impression dies, additional silicone monophase impressions, and polyether were −0.73 to −1.21%, −1.34%, and −1.46% for the height and 0.50–0.80%, 1.20%, and −1.30% for the width, respectively. PMID:28096815

  7. Implementation and evaluation of a protocol management system for automated review of CT protocols.

    PubMed

    Grimes, Joshua; Leng, Shuai; Zhang, Yi; Vrieze, Thomas; McCollough, Cynthia

    2016-09-08

    Protocol review is important to decrease the risk of patient injury and increase the consistency of CT image quality. A large volume of CT protocols makes manual review labor-intensive, error-prone, and costly. To address these challenges, we have developed a software system for automatically managing and monitoring CT proto-cols on a frequent basis. This article describes our experiences in the implementation and evaluation of this protocol monitoring system. In particular, we discuss various strategies for addressing each of the steps in our protocol-monitoring workflow, which are: maintaining an accurate set of master protocols, retrieving protocols from the scanners, comparing scanner protocols to master protocols, reviewing flagged differences between the scanner and master protocols, and updating the scanner and/or master protocols. In our initial evaluation focusing only on abdo-men and pelvis protocols, we detected 309 modified protocols in a 24-week trial period. About one-quarter of these modified protocols were determined to contain inappropriate (i.e., erroneous) protocol parameter modifications that needed to be corrected on the scanner. The most frequently affected parameter was the series description, which was inappropriately modified 47 times. Two inappropriate modifications were made to the tube current, which is particularly important to flag as this parameter impacts both radiation dose and image quality. The CT protocol changes detected in this work provide strong motivation for the use of an automated CT protocol quality control system to ensure protocol accuracy and consistency.

  8. Chapter 14: Chiller Evaluation Protocol

    SciTech Connect

    Tiessen, A.

    2014-09-01

    This protocol defines a chiller measure as a project that directly impacts equipment within the boundary of a chiller plant. A chiller plant encompasses a chiller--or multiple chillers--and associated auxiliary equipment. This protocol primarily covers electric-driven chillers and chiller plants. It does not include thermal energy storage and absorption chillers fired by natural gas or steam, although a similar methodology may be applicable to these chilled water system components. Chillers provide mechanical cooling for commercial, institutional, multiunit residential, and industrial facilities. Cooling may be required for facility heating, ventilation, and air conditioning systems or for process cooling loads (e.g., data centers, manufacturing process cooling). The vapor compression cycle, or refrigeration cycle, cools water in the chilled water loop by absorbing heat and rejecting it to either a condensing water loop (water cooled chillers) or to the ambient air (air-cooled chillers).

  9. Building America House Simulation Protocols

    SciTech Connect

    Hendron, Robert; Engebrecht, Cheryn

    2010-09-01

    The House Simulation Protocol document was developed to track and manage progress toward Building America's multi-year, average whole-building energy reduction research goals for new construction and existing homes, using a consistent analytical reference point. This report summarizes the guidelines for developing and reporting these analytical results in a consistent and meaningful manner for all home energy uses using standard operating conditions.

  10. Multiple protocol fluorometer and method

    DOEpatents

    Kolber, Zbigniew S.; Falkowski, Paul G.

    2000-09-19

    A multiple protocol fluorometer measures photosynthetic parameters of phytoplankton and higher plants using actively stimulated fluorescence protocols. The measured parameters include spectrally-resolved functional and optical absorption cross sections of PSII, extent of energy transfer between reaction centers of PSII, F.sub.0 (minimal), F.sub.m (maximal) and F.sub.v (variable) components of PSII fluorescence, photochemical and non-photochemical quenching, size of the plastoquinone (PQ) pool, and the kinetics of electron transport between Q.sub.a and PQ pool and between PQ pool and PSI. The multiple protocol fluorometer, in one embodiment, is equipped with an excitation source having a controlled spectral output range between 420 nm and 555 nm and capable of generating flashlets having a duration of 0.125-32 .mu.s, an interval between 0.5 .mu.s and 2 seconds, and peak optical power of up to 2 W/cm.sup.2. The excitation source is also capable of generating, simultaneous with the flashlets, a controlled continuous, background illumination.

  11. Integrating protocol schedules with patients' personal calendars.

    PubMed

    Civan, Andrea; Gennari, John H; Pratt, Wanda

    2006-01-01

    We propose a new approach for integrating protocol care schedules into patients' personal calendars. This approach could provide patients with greater control over their current and future scheduling demands as they seek and receive protocol-based care.

  12. The reliable multicast protocol application programming interface

    NASA Technical Reports Server (NTRS)

    Montgomery , Todd; Whetten, Brian

    1995-01-01

    The Application Programming Interface for the Berkeley/WVU implementation of the Reliable Multicast Protocol is described. This transport layer protocol is implemented as a user library that applications and software buses link against.

  13. Post-quantum key exchange protocols

    NASA Astrophysics Data System (ADS)

    Li, Xiangdong; Leung, Lin; Kwan, Andis Chi-Tung; Zhang, Xiaowen; Kahanda, Dammika; Anshel, Michael

    2006-05-01

    If an eavesdropper Eve is equipped with quantum computers, she can easily break the public key exchange protocols used today. In this paper we will discuss the post-quantum Diffie-Hellman key exchange and private key exchange protocols.

  14. Matériaux pour la combustion catalytique

    NASA Astrophysics Data System (ADS)

    Lunot, C.

    2002-04-01

    La combustion catalytique est l'une des technologies les plus prometteuses pour réaliser une combustion ultra-propre des hydrocarbures et notamment du gaz naturel. Aujourd'hui, cependant, les produits commerciaux utilisant cette technologie sont peu nombreux et le plus souvent réservés à des applications basse température (500-700°C) à cause de la limitation liée à la durée de vie des catalyseurs utilisés (métaux précieux). Le développement de cette technologie est donc intimement lié à des défis “matériaux”, et notamment à l'obtention de catalyseurs actifs et durables au moins plusieurs milliers d'heures à des températures comprises entre 700 et 1 100°C. Or les catalyseurs de type métaux précieux, très actifs y compris à basse température, ont une durée de vie (maintien de leur activité catalytique dans le temps) d'autant plus limitée que la température de l'application est élevée. A l'inverse, les catalyseurs de type pérovskite ou hexaaluminate, dont la durée de vie à haute température est satisfaisante, présentent une activité plus faible qui rend notamment l'amorçage de la combustion catalytique délicate. C'est pourquoi les solutions potentielles sont à rechercher non seulement du côté matériaux de catalyseurs mais aussi du côté ingénierie et conception des matériels associés.

  15. Protocols using Anonymous Connections: Mobile Applications

    DTIC Science & Technology

    1997-01-01

    Protocols using Anonymous Connections: Mobile Applications Michael G. Reed, Paul F. Syverson, and David M. Goldschlag ? Naval Research Laboratory...Abstract. This paper describes security protocols that use anonymous channels as primitive, much in the way that key distribution protocols take...encryption as primitive. This abstraction allows us to focus on high level anonymity goals of these protocols much as abstracting away from encryption clari

  16. 21 CFR 1301.18 - Research protocols.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... describing the new research and omitting information in the supplemental protocol which has been stated in... 21 Food and Drugs 9 2011-04-01 2011-04-01 false Research protocols. 1301.18 Section 1301.18 Food..., DISTRIBUTORS, AND DISPENSERS OF CONTROLLED SUBSTANCES Registration § 1301.18 Research protocols. (a) A...

  17. 40 CFR 160.120 - Protocol.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... PRACTICE STANDARDS Protocol for and Conduct of a Study § 160.120 Protocol. (a) Each study shall have an... study. The protocol shall contain but shall not necessarily be limited to the following information: (1) A descriptive title and statement of the purpose of the study. (2) Identification of the...

  18. 40 CFR 160.120 - Protocol.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... PRACTICE STANDARDS Protocol for and Conduct of a Study § 160.120 Protocol. (a) Each study shall have an... study. The protocol shall contain but shall not necessarily be limited to the following information: (1) A descriptive title and statement of the purpose of the study. (2) Identification of the...

  19. 40 CFR 792.120 - Protocol.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... dated signature of the study director. (15) A statement of the proposed statistical method. (b) All...) GOOD LABORATORY PRACTICE STANDARDS Protocol for and Conduct of A Study § 792.120 Protocol. (a) Each study shall have an approved written protocol that clearly indicates the objectives and all methods...

  20. 21 CFR 58.120 - Protocol.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... sponsor and the dated signature of the study director. (12) A statement of the proposed statistical... FOR NONCLINICAL LABORATORY STUDIES Protocol for and Conduct of a Nonclinical Laboratory Study § 58.120 Protocol. (a) Each study shall have an approved written protocol that clearly indicates the objectives...

  1. 40 CFR 160.120 - Protocol.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... PRACTICE STANDARDS Protocol for and Conduct of a Study § 160.120 Protocol. (a) Each study shall have an... study. The protocol shall contain but shall not necessarily be limited to the following information: (1) A descriptive title and statement of the purpose of the study. (2) Identification of the...

  2. 40 CFR 160.120 - Protocol.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... PRACTICE STANDARDS Protocol for and Conduct of a Study § 160.120 Protocol. (a) Each study shall have an... study. The protocol shall contain but shall not necessarily be limited to the following information: (1) A descriptive title and statement of the purpose of the study. (2) Identification of the...

  3. 40 CFR 792.120 - Protocol.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... dated signature of the study director. (15) A statement of the proposed statistical method. (b) All...) GOOD LABORATORY PRACTICE STANDARDS Protocol for and Conduct of A Study § 792.120 Protocol. (a) Each study shall have an approved written protocol that clearly indicates the objectives and all methods...

  4. 21 CFR 312.83 - Treatment protocols.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 5 2010-04-01 2010-04-01 false Treatment protocols. 312.83 Section 312.83 Food...-debilitating Illnesses § 312.83 Treatment protocols. If the preliminary analysis of phase 2 test results appears promising, FDA may ask the sponsor to submit a treatment protocol to be reviewed under...

  5. 21 CFR 1301.18 - Research protocols.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 9 2010-04-01 2010-04-01 false Research protocols. 1301.18 Section 1301.18 Food..., DISTRIBUTORS, AND DISPENSERS OF CONTROLLED SUBSTANCES Registration § 1301.18 Research protocols. (a) A protocol to conduct research with controlled substances listed in Schedule I shall be in the following...

  6. Cryptanalysis on Cheng et al. protocol

    NASA Astrophysics Data System (ADS)

    Thakur, Tejeshwari

    2016-06-01

    Deployment of new node in any wireless sensor network is a sensitive task. This is the reason why, an Access Control Protocol is required in WSN. In this paper, we demonstrate that Access Control Protocol proposed by Cheng et al.[1] for Wireless Sensor Network is insecure. The reason is that this protocol fails to resist the active attack.

  7. 40 CFR 161.70 - Acceptable protocols.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... ingredient, mixture, or product. Accordingly, failure to follow a suggested protocol will not invalidate a.... Accordingly, questions concerning protocols should be directed, preferably in writing, to the Product Manager... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Acceptable protocols. 161.70...

  8. 40 CFR 161.70 - Acceptable protocols.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... ingredient, mixture, or product. Accordingly, failure to follow a suggested protocol will not invalidate a.... Accordingly, questions concerning protocols should be directed, preferably in writing, to the Product Manager... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Acceptable protocols. 161.70...

  9. 21 CFR 1301.18 - Research protocols.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 9 2014-04-01 2014-04-01 false Research protocols. 1301.18 Section 1301.18 Food..., DISTRIBUTORS, AND DISPENSERS OF CONTROLLED SUBSTANCES Registration § 1301.18 Research protocols. (a) A protocol to conduct research with controlled substances listed in Schedule I shall be in the following...

  10. 21 CFR 1301.18 - Research protocols.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 9 2013-04-01 2013-04-01 false Research protocols. 1301.18 Section 1301.18 Food..., DISTRIBUTORS, AND DISPENSERS OF CONTROLLED SUBSTANCES Registration § 1301.18 Research protocols. (a) A protocol to conduct research with controlled substances listed in Schedule I shall be in the following...

  11. Preparation of semi-solid aluminum alloy slurry poured through a water-cooled serpentine channel

    NASA Astrophysics Data System (ADS)

    Chen, Zheng-Zhou; Mao, Wei-Min; Wu, Zong-Chuang

    2012-01-01

    A water-cooled serpentine channel pouring process was invented to produce semi-solid A356 aluminum alloy slurry for rheocasting, and the effects of pouring temperature and circulating cooling water flux on the microstructure of the slurry were investigated. The results show that at the pouring temperature of 640-680°C and the circulating cooling water flux of 0.9 m3/h, the semi-solid A356 aluminum alloy slurry with spherical primary α(Al) grains can be obtained, whose shape factors are between 0.78 and 0.86 and the grain diameter can reach 48-68 μm. When the pouring temperatures are at 660-680°C, only a very thin solidified shell remains inside the serpentine channel and can be removed easily. When the serpentine channel is cooled with circulating water, the microstructure of the semi-solid slurry can be improved, and the serpentine channel is quickly cooled to room temperature after the completion of one pouring. In terms of the productivity of the special equipment, the water-cooled serpentine channel is economical and efficient.

  12. Nonblocking and orphan free message logging protocols

    NASA Technical Reports Server (NTRS)

    Alvisi, Lorenzo; Hoppe, Bruce; Marzullo, Keith

    1992-01-01

    Currently existing message logging protocols demonstrate a classic pessimistic vs. optimistic tradeoff. We show that the optimistic-pessimistic tradeoff is not inherent to the problem of message logging. We construct a message-logging protocol that has the positive features of both optimistic and pessimistic protocol: our protocol prevents orphans and allows simple failure recovery; however, it requires no blocking in failure-free runs. Furthermore, this protocol does not introduce any additional message overhead as compared to one implemented for a system in which messages may be lost but processes do not crash.

  13. Un nouveau vaccin conjugué contre le méningocoque: Que devraient faire et savoir les médecins?

    PubMed Central

    Bortolussi, R; Salvadori, M

    2009-01-01

    Un vaccin conjugué quadrivalent contre le méningocoque de séro-groupes A, C, Y et W135 (MCV4 [Menactra, sanofi pasteur, Canada]) a été lancé au Canada en 2007 pour les personnes de deux ans ou plus. Le MCV4 ajoute trois sérogroupes aux vaccins conjugués contre le méningocoque de sérogroupe C, utilisé depuis plusieurs années. Les taux de méningococcies invasives du sérogroupe C ont fléchi depuis dix ans grâce au vaccin conjugué contre le méningocoque de séro-groupe C. Cependant, l’incidence d’infection causée par les séro-groupes A, B, Y et W135 n’a pas tellement changé. Le vaccin MCV4 induit la production d’anticorps protecteurs contre les sérogroupes A, C, Y et W135 chez les adultes et les enfants de plus de deux ans. Les effets indésirables graves du vaccin MCV4 sont peu fréquents. Étant donné l’efficacité des vaccins conjugués contre le méningocoque de sérogroupe C administrés aux jeunes nourrissons et le nombre élevé de méningococcies du sérogroupe C au Canada par le passé, les médecins devraient favoriser et promouvoir les programmes de vaccination sub-ventionnés par le gouvernement entrepris dès l’âge de deux mois. Le vaccin MCV4 devrait également être administré aux enfants de deux ans plus vulnérables à une méningococcie. On peut également envisager de l’administrer aux enfants positifs au VIH de deux ans ou plus. Il faut offrir une dose de rappel du vaccin MCV4 ou d’un vaccin conjugué contre le méningocoque de sérogroupe C à tous les adolescents vers l’âge de 12 ans. D’ordinaire, ces vaccins sont sécuritaires et bien tolérés.

  14. INEEL AIR MODELING PROTOCOL ext

    SciTech Connect

    C. S. Staley; M. L. Abbott; P. D. Ritter

    2004-12-01

    Various laws stemming from the Clean Air Act of 1970 and the Clean Air Act amendments of 1990 require air emissions modeling. Modeling is used to ensure that air emissions from new projects and from modifications to existing facilities do not exceed certain standards. For radionuclides, any new airborne release must be modeled to show that downwind receptors do not receive exposures exceeding the dose limits and to determine the requirements for emissions monitoring. For criteria and toxic pollutants, emissions usually must first exceed threshold values before modeling of downwind concentrations is required. This document was prepared to provide guidance for performing environmental compliance-driven air modeling of emissions from Idaho National Engineering and Environmental Laboratory facilities. This document assumes that the user has experience in air modeling and dose and risk assessment. It is not intended to be a "cookbook," nor should all recommendations herein be construed as requirements. However, there are certain procedures that are required by law, and these are pointed out. It is also important to understand that air emissions modeling is a constantly evolving process. This document should, therefore, be reviewed periodically and revised as needed. The document is divided into two parts. Part A is the protocol for radiological assessments, and Part B is for nonradiological assessments. This document is an update of and supersedes document INEEL/INT-98-00236, Rev. 0, INEEL Air Modeling Protocol. This updated document incorporates changes in some of the rules, procedures, and air modeling codes that have occurred since the protocol was first published in 1998.

  15. Planetary Protection Alternate Protocol Certification

    NASA Astrophysics Data System (ADS)

    Baker, Amy; Barengoltz, Jack; Tisdale, David

    The talk presents a standardized approach for new method certification or alterative testing protocol (ATP) certification against the existing U.S. Planetary Protection Standards. In consideration of new method certification there are two phases of activities that are relevant to the certification process. The first is sample acquisition which typically incorporates swab or wipes sampling on relevant hardware, associated facilities and ground support equipment. The sampling methods introduce considerations of field sampling efficiency as it relates to spore distribution on the spacecraft, spacecraft material influences on the ability of the swab or wipe to remove spores from the hardware, the types of swabs and wipes used (polyester, cotton, macrofoam), and human sampling influences. The second portion of a new protocol certification looks specifically at the lab work-up or analysis of the samples provided to the laboratory. Variables in this process include selection of appropriate biomarkers, extraction efficiencies (removal of spores or constituents of interest from the sampling device), and a method's ability to accurately determine the number of spores present in the sample with a statistically valid level of confidence as described by parameters such as precision, accuracy, robustness, specificity and sensitivity. Considerations for alternative testing protocols such as those which utilize bioburden reduction techniques include selection of appropriate biomarkers for testing, test materials and a defined statistical approach that provides sufficient scientific data to support the modification of an existing NASA specification or the generation of a new NASA specification. Synergies between the U.S. and European Space Agency approaches will also be discussed.

  16. Dispositifs semi-conducteurs pour biodetection photonique et imagerie hyperspectrale

    NASA Astrophysics Data System (ADS)

    Lepage, Dominic

    La creation d'un microsysteme d'analyse biochimique, capable de livrer des diagnostics preliminaires sur la quantification d'elements pathogenes, est un defi multidisciplinaire ayant un impact potentiel important sur la majorite des activites humaines en sante et securite. En effet, un dispositif integre, peu dispendieux et livrant des resultats facilement interpretables, permettrait une vulgarisation des capacites de biodetection a travers differents domaines d'applications societaires et industriels. Le present document se concentre sur l'integration monolithique d'une methode de biocaracterisation dans le but de generer un transducteur miniaturise et efficace, element central d'un microsysteme de detection. Le projet de recherche ici presente vise l'etude de l'applicabilite d'un capteur plasmonique integre par l'entremise de nanostructures semi-conductrices aux proprietes quantiques et luminescentes. L'approche presentee est globale; c'est-a-dire qu'on vise a repondre aux questions fondamentales impliquant la comprehension des phenomenes photoniques, le developpement et la fabrication des dispositifs, les methodes de caracterisations possibles ainsi que l'application d'un transducteur SPR integre a la biodetection. En d'autres termes : dans quelles circonstances et comment un transducteur plasmonique integre doit-il etre realise pour l'application a la detection delocalisee d'elements pathogenes? Dans le but d'engendrer un instrument simple a l'echelle de l'usager, l'integration de la connaissance a l'echelle du design est donc effectuee. Ainsi, des capteurs plasmoniques monolithiques sont concus a l'aide de modeles theoriques ici presentes. Un instrument de mesure hyperspectrale conjuguee permettant de cartographier directement la relation de dispersion des plasmons diffractes a ete construit et teste. Cet instrument est employe a la cartographie d'elements de diffusion. Finalement, une demonstration du fonctionnement du dispositif, appliquee a la

  17. Effective Protocols for Mobile Communications and Networking

    SciTech Connect

    Espinoza, J.; Sholander, P.; Van Leeuwen, B,

    1998-12-01

    This report examines methods of mobile communications with an emphasis on mobile computing and wireless communications. Many of the advances in communications involve the use of Internet Protocol (IP), Asynchronous Transfer Mode (ATM), and ad hoc network protocols. However, many of the advances in these protocols have been focused on wired communications. Recently much focus has been directed at advancing communication technology in the area of mobile wireless networks. This report discusses various protocols used in mobile communications and proposes a number of extensions to existing protocols. A detailed discussion is also included on desirable protocol characteristics and evaluation criteria. In addition, the report includes a discussion on several network simulation tools that maybe used to evaluate network protocols.

  18. Enabling protocol-based medical critiquing.

    PubMed

    Sips, Robert-Jan; Braun, Loes; Roos, Nico

    2006-01-01

    This paper investigates the combination of expert critiquing systems and formal medical protocols. Medical protocols might serve as a suitable basis for an expert critiquing system because of the ongoing acceptance of medical protocols and the rise of both evidence-based practice and evidence-based protocols. A prerequisite for a critiquing system based on medical protocols is the ability to match the actions a physician performs in practice to actions prescribed by a protocol. Previous research has shown that this is quite difficult, due to the fact that computerized systems are unable to handle deviations from a protocol, which are common in the medical domain. Our solution to this problem is based on extracting the intention underlying a physician's action and uses the intention as the basis for matching performed actions to prescribed actions. We propose an algorithm for the intention-based matching process and we evaluate the matching algorithm on 12 cases of hyperbilirubinemia in healthy term newborns.

  19. Optical protocols for terabit networks

    NASA Technical Reports Server (NTRS)

    Chua, P. L.; Lambert, J. L.; Morookian, J. M.; Bergman, L. A.

    1991-01-01

    This paper describes a new fiber-optic local area network technology providing 100X improvement over current technology, has full crossbar funtionality, and inherent data security. Based on optical code-division multiple access (CDMA), using spectral phase encoding/decoding of optical pulses, networking protocols are implemented entirely in the optical domain and thus conventional networking bottlenecks are avoided. Component and system issues for a proof-of-concept demonstration are discussed, as well as issues for a more practical and commercially exploitable system. Possible terrestrial and aerospace applications of this technology, and its impact on other technologies are explored. Some initial results toward realization of this concept are also included.

  20. Mars Sample Quarantine Protocol Workshop

    NASA Technical Reports Server (NTRS)

    DeVincenzi, Donald L. (Editor); Bagby, John (Editor); Race, Margaret (Editor); Rummel, John (Editor)

    1999-01-01

    The Mars Sample Quarantine Protocol (QP) Workshop was convened to deal with three specific aspects of the initial handling of a returned Mars sample: 1) biocontainment, to prevent uncontrolled release of sample material into the terrestrial environment; 2) life detection, to examine the sample for evidence of live organisms; and 3) biohazard testing, to determine if the sample poses any threat to terrestrial life forms and the Earth's biosphere. During the first part of the Workshop, several tutorials were presented on topics related to the workshop in order to give all participants a common basis in the technical areas necessary to achieve the objectives of the Workshop.

  1. A structured data transfer protocol

    NASA Technical Reports Server (NTRS)

    Barrett, P.; Rots, A.

    1992-01-01

    The transfer of data between different computers and programs can be a major obstacle during data analysis. We present a new data transfer protocol which is based on a simple structure containing a value, an error, and a unit. Each of these members can be arrays or another structure. The ability to nest structures allows for the concept of objects. When using an object-oriented language such as C++, reference can be made to the object name instead of each element explicitly. Prototype code has been written which implements the basic design with enhancements planned for the future.

  2. Experimental quantum multiparty communication protocols

    NASA Astrophysics Data System (ADS)

    Smania, Massimiliano; Elhassan, Ashraf M.; Tavakoli, Armin; Bourennane, Mohamed

    2016-06-01

    Quantum information science breaks limitations of conventional information transfer, cryptography and computation by using quantum superpositions or entanglement as resources for information processing. Here we report on the experimental realisation of three-party quantum communication protocols using single three-level quantum system (qutrit) communication: secret-sharing, detectable Byzantine agreement and communication complexity reduction for a three-valued function. We have implemented these three schemes using the same optical fibre interferometric setup. Our realisation is easily scalable without compromising on detection efficiency or generating extremely complex many-particle entangled states.

  3. Spectroscopie pompe-sonde pour la détection de bioaérosols

    NASA Astrophysics Data System (ADS)

    Guyon, L.; Courvoisier, F.; Wood, V.; Boutou, V.; Bartelt, A.; Roth, M.; Rabitz, H.; Wolf, J. P.

    2006-10-01

    La fluorescence du Tryptophane excité par une impulsion ultra-brève à 270 nm peut être diminuée d'un facteur deux par une seconde impulsion à 800 nm, à l'aide d'un dispositif pompe-sonde. Cette décroissance est aussi observée pour les bactéries vivantes, dont le Tryptophane est l'un des fluorophores, tandis qu'aucune décroissance n'est observée pour d'autres molécules organiques comme le naphtalène ou le gazole, malgré des spectres d'absorption et de fluorescence similaires. Cette différence remarquable est très prometteuse pour la distinction d'aérosols biologiques et organiques.

  4. Miroirs multicouches C/SI a incidence normale pour la region spectrale 25-40 nanometres

    NASA Astrophysics Data System (ADS)

    Grigonis, Marius

    Nous avons propose la nouvelle combinaison de materiaux, C/Si, pour la fabrication de miroirs multicouches a incidence normale dans la region spectrale 25-40 nm. Les resultats experimentaux montrent que cette combinaison possede une reflectivite d'environ ~25% dans la region spectrale 25-33 nm et une reflectivite d'environ ~23% dans la region spectrale 33-40 nm. Ces valeurs de reflectivite sont les plus grandes obtenues jusqu'a maintenant dans la region spectrale 25-40 nm. Les miroirs multicouches ont ete par la suite caracterises par microscopie electronique a transmission, par diverses techniques de diffraction des rayons X et par spectroscopies d'electrons AES et ESCA. La resistance des miroirs aux temperatures elevees a ete egalement etudiee. Les resultats fournis par les methodes de caracterisation indiquent que cette combinaison possede des caracteristiques tres prometteuses pour son application comme miroir pour les rayons X mous.

  5. Analyzing the effect of routing protocols on media access control protocols in radio networks

    SciTech Connect

    Barrett, C. L.; Drozda, M.; Marathe, A.; Marathe, M. V.

    2002-01-01

    We study the effect of routing protocols on the performance of media access control (MAC) protocols in wireless radio networks. Three well known MAC protocols: 802.11, CSMA, and MACA are considered. Similarly three recently proposed routing protocols: AODV, DSR and LAR scheme 1 are considered. The experimental analysis was carried out using GloMoSim: a tool for simulating wireless networks. The main focus of our experiments was to study how the routing protocols affect the performance of the MAC protocols when the underlying network and traffic parameters are varied. The performance of the protocols was measured w.r.t. five important parameters: (i) number of received packets, (ii) average latency of each packet, (iii) throughput (iv) long term fairness and (v) number of control packets at the MAC layer level. Our results show that combinations of routing and MAC protocols yield varying performance under varying network topology and traffic situations. The result has an important implication; no combination of routing protocol and MAC protocol is the best over all situations. Also, the performance analysis of protocols at a given level in the protocol stack needs to be studied not locally in isolation but as a part of the complete protocol stack. A novel aspect of our work is the use of statistical technique, ANOVA (Analysis of Variance) to characterize the effect of routing protocols on MAC protocols. This technique is of independent interest and can be utilized in several other simulation and empirical studies.

  6. An internationally standardised antisaccade protocol.

    PubMed

    Antoniades, Chrystalina; Ettinger, Ulrich; Gaymard, Bertrand; Gilchrist, Iain; Kristjánsson, Arni; Kennard, Christopher; John Leigh, R; Noorani, Imran; Pouget, Pierre; Smyrnis, Nikolaos; Tarnowski, Adam; Zee, David S; Carpenter, R H S

    2013-05-24

    Detailed measurements of saccadic latency--the time taken to make an eye movement to a suddenly-presented visual target--have proved a valuable source of detailed and quantitative information in a wide range of neurological conditions, as well as shedding light on the mechanisms of decision, currently of intense interest to cognitive neuroscientists. However, there is no doubt that more complex oculomotor tasks, and in particular the antisaccade task in which a participant must make a saccade in the opposite direction to the target, are potentially more sensitive indicators of neurological dysfunction, particularly in neurodegenerative conditions. But two obstacles currently hinder their widespread adoption for this purpose. First, that much of the potential information from antisaccade experiments, notably about latency distribution and amplitude, is typically thrown away. Second, that there is no standardised protocol for carrying out antisaccade experiments, so that results from one laboratory cannot easily be compared with those from another. This paper, the outcome of a recent international meeting of oculomotor scientists and clinicians with an unusually wide experience of such measurements, sets out a proposed protocol for clinical antisaccade trials: its adoption will greatly enhance the clinical and scientific benefits of making these kinds of measurements.

  7. New rapid multicolor PRINS protocol.

    PubMed

    Yan, Ju; Gadji, Macoura; Krabchi, Kada; Drouin, Régen

    2006-01-01

    In the multiple-color primed in situ labeling (multi-PRINS) technique, using ddNTPs between two PRINS reactions can block the free 3'-end generated in the previous PRINS reaction, thus avoiding the next PRINS reaction, using it as a primer to perform spurious elongation at nondesired sites. However, by omitting the blocking step and taking advantage of the color mixing, we developed a simple and rapid multi-PRINS technique to simultaneously detect three chromosomes in the same cell. With this protocol, one can create a third color using the two most common forms of labeled dUTP (biotin- and digoxigenin-labeled dUTP) and two fluorochromes (fluorescein and rhodamine). The signals at the centromeres of three different chromosomes displayed perfect yellow, red, and green colors, respectively. The entire procedure could be completed in less than 90 min because the blocking step was omitted. This protocol is practical and efficient for multi-PRINS so that even more than three chromosome targets could be detected in the same cell.

  8. Analysis Of The Sludge Batch 7b (Macrobatch 9) DWPF Pour Stream Glass Sample

    SciTech Connect

    Johnson, F. C.; Crawford, C. L.; Pareizs, J. M.

    2013-11-18

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 7b (SB7b), also referred to as Macrobatch 9 (MB9), in January 2012. SB7b is a blend of the heel of Tank 40 from Sludge Batch 7a (SB7a) and the SB7b material that was transferred to Tank 40 from Tank 51. SB7b was processed using Frit 418. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP), which is governed by the DWPF Waste Form Compliance Plan, and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. Two pour stream glass samples were collected while processing SB7b. The samples were transferred to the Savannah River National Laboratory (SRNL) where one was analyzed and the other was archived. The following conclusions were drawn from the analytical results provided in this report: The sum of oxides for the official SB7b pour stream glass is within the Product Composition Control System (PCCS) limits (95-105 wt%); The average calculated Waste Dilution Factor (WDF) for SB7b is 2.3. In general, the measured radionuclide content of the official SB7b pour stream glass is in good agreement with the calculated values from the Tank 40 dried sludge results from the SB7b Waste Acceptance Program Specification (WAPS) sample; As in previous pour stream samples, ruthenium and rhodium inclusions were detected by Scanning Electron Microscopy-Electron Dispersive Spectroscopy (SEM-EDS) in the SB7b pour stream sample; The Product Consistency Test (PCT) results indicate that the official SB7b pour stream glass meets the waste acceptance criteria for durability with a normalized boron release of 0.8 g/L, which is an order of magnitude less than the Environmental Assessment (EA) glass; The measured density of the SB7b pour stream glass was 2.70 g/cm{sup 3}; The Fe{sup 2+}/ΣFe ratio of the SB7b pour stream samples was 0.07.

  9. Is the Glass Half Full or Half Empty? How to Reverse the Effect of Glass Elongation on the Volume Poured

    PubMed Central

    Caljouw, Simone R.; van Wijck, Ruud

    2014-01-01

    To reduce the volume of drinks and the risk of overconsumption, health professionals recommend the use of tall skinny instead of short wide glasses. Yet the results of the present study contradict this health advice. Participants who generously filled up a glass with lemonade served 9% more in tall narrow compared with short wide glasses (p<0.05). In addition, when pouring a small amount (i.e., a shot), participants poured 3% more in a short wide than in a tall narrow glass (p<0.05). Elongation may bias the perceived volume that is poured but also the perceived volume of the free space in the glass. We hypothesised that shifting attention from the bottom to the brim of the glass when filling it close to capacity might reverse the glass elongation effect on the quantity poured. This hypothesis was tested, by investigating two pouring tasks that differed in the required focus of attention. When the instruction was to match a reference volume, participants poured more liquid in the short wide compared with the tall narrow glass (p<0.05). The effect of glass elongation on poured volume was the opposite when the instruction was to leave space in the glasses for the reference volume. It seems likely that task and individual factors affect the pourer's viewing strategy and thus may determine the direction of the glass elongation effect on the volume poured. PMID:25343252

  10. Amelioration de l'efficacite energetique du procede d'electrolyse de l'aluminium conception d'un nouveau bloc cathodique

    NASA Astrophysics Data System (ADS)

    Blais, Mathieu

    . Ceci a permis d'evaluer les benefices faits a partir d'un bloc modifie par rapport au bloc de reference. Plusieurs parametres geometriques du bloc sont variables sur un domaine realiste et l'integration d'un composant en materiau plus conducteur y a egalement ete etudiee. Utilisant des outils mathematiques d'optimisation, un design de bloc optimal a pu etre trouve. Les resultats demontrent qu'il est possible de generer des economies a partir de la modification du bloc. Il est egalement prouve que l'uniformisation de la densite de courant a travers le bloc peut apporter de grands avantages economiques et environnementaux dans le procede d'electrolyse de l'aluminium. Les resultats de cette etude serviront d'arguments pour les chercheurs dans l'industrie a savoir s'il vaut la peine d'investir ou non dans la fabrication d'un prototype experimental souvent tres couteux. Mots-cles : Efficacite energetique, electrolyse de l'aluminium, cathode, simulation thermoelectrique, uniformisation de la densite de courant, optimisation.

  11. Mode-bifurcation upon pouring water into a cup that depends on the shape of the cup

    NASA Astrophysics Data System (ADS)

    Nakata, Satoshi; Yamada, Akiko; Kitahata, Hiroyuki

    2005-05-01

    Mode-bifurcation that included hysteresis was investigated when water was poured into a cup via a water faucet. Three modes, i.e., accumulation flow (mode I), scattering flow (mode II), and open and shut oscillatory flow (mode III), could be produced by laterally changing the distance between the center of the cup and the landing point of water poured at a constant flow rate. Hysteresis in mode-bifurcation was observed when the distance was changed depending on the initial location of the water poured into the cup. Pendulum flow was also observed when water was poured into a shallow cell. The essential features of this mode-switching were reproduced by a numerical calculation as a function of the landing point of the poured water using two-variable (the size of the water hollow and the pressure on the water surface) differential equations that included the nature of reversed flow.

  12. EVALUATION OF THE IMPACT OF THIN POURS ON SALTSTONE PROPERTIES

    SciTech Connect

    Cozzi, A.; Langton, C.; Fox, K.

    2012-10-02

    The proposed Saltstone Disposal Unit 6 (SDU6) is a larger structure than the SDU4 cells and larger than the disposal units (SDU2, SDU3, and SDU5) currently in use or under construction. The additional capacity provided by SDU6 is desired to reduce life cycle costs and support site accelerated closure goals. The larger size of the planned SDU6 could result in saltstone being placed in thinner lifts as the unit is filled. This study was performed to determine whether thinner layers of saltstone negatively impact the performance of the waste form. A larger number of cold joints could potentially result in increased drying, salt deposition, and surface oxidation. A matrix of samples was prepared to simulate thin pours ranging from 0.5 to 6 inches thick. Each sample was cured for at least 28 days prior to further characterization. Leachability results showed that there is no obvious impact of the number of grout layers on the Leachability Index values for Na and NO{sub 3}. The concentrations of Cr, NO{sub 2}, and C{sub 2}O{sub 4} were below detection limits for all of the leachates. No attempt was made to evaluate the oxidation of these samples since no measureable Cr was leached, although this would appear to indicate that Cr in the samples remained reduced for cold joints with surfaces exposed for approximately four days. The results of hydraulic conductivity measurements showed that the number of cold joints in the samples did not have a significant impact on the measured values for the vertical lift orientation (i.e., when the flow path is perpendicular to the cold joints). For the horizontal lift orientation (i.e., when the flow path is parallel to the cold joints), the number of cold joints in the samples also did not appear to have a significant impact on hydraulic conductivity. The measured hydraulic conductivity was faster when the flow path was parallel to the cold joints as compared to when the flow path was perpendicular to the cold joints. Percolation

  13. A Unified Fault-Tolerance Protocol

    NASA Technical Reports Server (NTRS)

    Miner, Paul; Gedser, Alfons; Pike, Lee; Maddalon, Jeffrey

    2004-01-01

    Davies and Wakerly show that Byzantine fault tolerance can be achieved by a cascade of broadcasts and middle value select functions. We present an extension of the Davies and Wakerly protocol, the unified protocol, and its proof of correctness. We prove that it satisfies validity and agreement properties for communication of exact values. We then introduce bounded communication error into the model. Inexact communication is inherent for clock synchronization protocols. We prove that validity and agreement properties hold for inexact communication, and that exact communication is a special case. As a running example, we illustrate the unified protocol using the SPIDER family of fault-tolerant architectures. In particular we demonstrate that the SPIDER interactive consistency, distributed diagnosis, and clock synchronization protocols are instances of the unified protocol.

  14. Developing practice protocols for advanced practice nursing.

    PubMed

    Paul, S

    1999-08-01

    In most states, the role of an advanced practice nurse is dependent on practice protocols that provide an organized method for analyzing and managing a disease or major symptom. They are also used to control the process of medical care and to specify steps in the delivery of that care. Creating appropriate practice protocols is one of the most important precursors to implementing the advanced practice role, because they virtually drive the clinician's ability to treat or manage clinical situations or disease states. This article outlines the steps involved in developing practice protocols and discusses the content that should be included in a protocol, providing an example of narrative and algorithm format protocols. Pros and cons, as well as legal issues related to practice protocols, are also presented.

  15. A novel interactive electronic protocol review system.

    PubMed

    Lewis, T W; Herbert, J H; Barrett, J; Lamprecht, E G

    2001-09-01

    This report describes a new protocol review system which was designed as a Lotus Notes database. This system encompasses all elements of investigator protocol generation, review and approval by the laboratory animal veterinarian and institutional animal care and use committee (IACUC), and notification of approval to personnel responsible for animal ordering. Unique features of the system are interactive dialog between IACUC members and the investigator and confidential protocol discussion among IACUC members. The advantages of the system are multiple: 1. it allows for interactive protocol discussion online; 2. it is an essentially paperless process; 3. inclusion of the outside IACUC member is easily accomplished by using an offsite personal computer and secure remote local-area network access; 4. the time required for protocol generation, review, and approval is streamlined due to the automatic features of the database and the speed of e-mail; and 5. all documentation relating to the protocol and the approval process is archived online.

  16. [The research protocol. Part I].

    PubMed

    Miranda-Novales, María Guadalupe; Villasís-Keever, Miguel Ángel

    2015-01-01

    One of the principal aims in research is the publication of the study in scientific journals. This implies two challenges: the first one, the election of an adequate research design, and the second one, the concrete and simple wording of the results for the study to be accepted in the most appropriate journal according to the scope. Despite numerous supporting documents are available for both issues, the publication process is long, tiresome, and can discourage the most enthusiastic researcher. This is the first of a series of articles with the objective to describe the steps from the research question to the publication of the study. First of all, the importance of the research design will be addressed. The structure of the protocol is essential to achieve the objectives, and provides a way to organize the investigation in a logic, comprehensible and efficient manner.

  17. [Climate change and Kyoto protocol].

    PubMed

    Ergasti, G; Pippia, V; Murzilli, G; De Luca D'Alessandro, E

    2009-01-01

    Due to industrial revolution and the heavy use of fossil fuels, the concentration of greenhouse gases in the atmosphere has increased dramatically during the last hundred years, and this has lead to an increase in mean global temperature. The environmental consequences of this are: the melting of the ice caps, an increase in mean sea-levels, catastrophic events such as floodings, hurricanes and earthquakes, changes to the animal and vegetable kingdoms, a growth in vectors and bacteria in water thus increasing the risk of infectious diseases and damage to agriculture. The toxic effects of the pollution on human health are both acute and chronic. The Kyoto Protocol is an important step in the campaign against climatic changes but it is not sufficient. A possible solution might be for the States which produce the most of pollution to adopt a better political stance for the environment and to use renewable resources for the production of energy.

  18. An Argument for Soft Layering of Protocols.

    DTIC Science & Technology

    1983-05-01

    protocols. A protocol is the means by which two cooperating processes1 communicate . It consists of a set of agreements governing the form of the data ...that is sent over the communications channel, and the conventions for what data is to be sent under what circumstances. Put simply, a protocol...the FIFO nature of the underlying communications requires that the entity catch up with the monitoring station before it can receive the latest data

  19. Quantitative Microbial Risk Assessment Tutorial: Pour Point Analysis of Land-applied Microbial Loadings and Comparison of Simulated and Gaging Station Results

    EPA Science Inventory

    This tutorial demonstrates a pour point analysis • Initiates execution of the SDMPB.• Navigates the SDMPB.• Chooses a pour point within a watershed, delineates the sub-area that contributes to that pour point, and collects data for it.• Considers land applicat...

  20. Status Report on the UNIDROIT Space Protocol

    NASA Astrophysics Data System (ADS)

    Larsen, Paul B.

    2002-01-01

    In my status report on the UNIDROIT Space Protocol I will describe the history and purpose of the Space Protocol; I will state the Protocol's relationship to the UNIDROIT Convention on International Interests in Mobile Equipment in particular after the 2001 Cape Town Diplomatic Conference on the Convention. I will describe the COPUOS study of possible conflicts with the existing space law treaties and explain UNIDROIT's objective of avoiding conflicts between existing space law and the Space Protocol. Finally I will describe future steps to be taken.

  1. Quelle place pour l’anesthésie locorégionale chez les brûlés?

    PubMed Central

    Chaibdraa, A.; Medjelekh, M.S.; Saouli, A.; Bentakouk, M.C.

    2015-01-01

    Summary La pratique de l’anesthésie locorégionale chez les brûlés est limitée par de nombreux facteurs. Elle est considérée comme marginale dans l’approche multimodale du traitement de la douleur par excès de nociception. Ce travail rétrospectif, sur une période de 3 années, porte sur les anesthésies locorégionales (ALR) réalisées. Les résultats obtenus vont permettre, en regard de la rareté des données de la littérature, de formuler quelques suggestions sur la place de cette technique. Il a été recensé 634 ALR, dont 96% chez des adultes. Les membres inférieurs sont les plus concernés (76%). Des anesthésies rachidiennes ont été pratiquées chez 32 patients dont 4 enfants. Les incidents sont peu fréquents (3%) et sans gravité. L’ALR peut représenter une option utile dans la stratégie multimodale de prise en charge de la douleur, la réhabilitation passive précoce et la chirurgie de recouvrement par la greffe de peau. Elle mérite d’être explorée en ambulatoire, dans la mesure où 95% des brûlés ne sont pas hospitalisés. La place de l’anesthésie-locorégionale chez les brûlés devrait susciter plus d’intérêts, pour permettre d’établir des protocoles fondés sur une réflexion pluridisciplinaire. PMID:27279806

  2. Prediction du transfert thermique parietal pour la chambre de combustion d'une turbine a gaz

    NASA Astrophysics Data System (ADS)

    Gosselin, Pierre

    Des travaux ont demontre que la temperature de paroi pouvait etre predite avec precision (+/-6 a 10%) pour une chambre de combustion a pleine-echelle. Pour les resultats obtenus d'une autre chambre, aussi identique mais de plus petit diametre, la prediction de temperature de paroi n'offrait pas la meme precision de calcul. Cette etude est limitee aux turbines aeronautiques. L'objectif a ete de reevaluer globalement la prediction de la temperature de paroi d'une chambre de combustion de type GHOST a la lumiere des resultats obtenus des programmes experimentaux, tout en prenant en consideration l'influence des differents types de carburants. Par l'analyse du grand nombre de donnees experimentales, des modifications furent apportees a la methode de prediction utilisee pour les chambres a pleine echelle afin de reduire l'erreur de prediction pour les echelles a 1:2 (basse pression), 1:3 (basse pression) et 1:3 (haute pression). Une modelisation de la chambre de combustion a ete effectuee. L'analyse numerique nous a demontree que le code FLUENT/UNS predisait tres bien l'ecoulement a froid a l'interieur de la chambre de combustion GHOST echelle 1:1. La prediction etait acceptable au niveau des profils de temperature a l'interieur de la chambre. Cependant, une lacune a ete observee au niveau du modele d'evaporation du code.

  3. Salicylate de bismuth pour la diarrhée chez l’enfant

    PubMed Central

    Goldman, Ran D.

    2013-01-01

    Résumé Question J’ai reçu récemment un patient de 5 ans à qui, lors d’un voyage en Amérique du Sud, un médecin de famille local a prescrit du sous-salicylate de bismuth pour une diarrhée. Est-ce une pratique que nous devrions encourager? Réponse La recherche réalisée dans les pays en développement a fait valoir que l’utilisation du sous-salicylate de bismuth était efficace pour raccourcir la durée de la diarrhée. En dépit de ces constatations, son efficacité limitée, des préoccupations à propos du fait qu’il pourrait potentiellement causer le syndrome de Reye, les problèmes d’observance et son coût sont les principales raisons pour lesquelles on ne le recommande pas systématiquement pour les enfants.

  4. Matériaux pour la production d'hydrogène

    NASA Astrophysics Data System (ADS)

    Saint-Just, J.

    2002-04-01

    L'émergence des piles à combustible et l'apparition de l'hydrogène comme carburant dans des véhicules grand public comme les autobus, suscitent un élan fort pour la mise au point de technologies nouvelles pour la production d'hydrogène décentralisée et à petite échelle. Du fait de sa richesse en hydrogène. des réserves disponibles et de son infrastructure de distribution, le gaz naturel est considéré comme la ressource majeure pouvant fournir les quantités d'hydrogène nécessaires pour un passage progressif vers une économie de l'hydrogène dans les décennies immédiates en attendant que progressivement les énergies renouvelables prennent le relais. Des solutions innovantes, incluant de nouveaux matériaux, sont nécessaires pour la mise au point des petits générateurs d'hydrogène efficaces et bon marché alimenté au gaz naturel qui sont attendus par les fabricants (le piles à combustible, les acteurs de l'énergie et les fabricants de véhicules.

  5. Evaluation of a Pour-Through Water Treatment Device for Use as Microbiological Purifier

    EPA Science Inventory

    The United States Environmental Protection Agency (EPA) Office of Research and Development has evaluated the performance of a Point-of-Use (POU) pour-through device designed for use in India, developing and emerging market (D&E) countries, and under emergency situations in the Un...

  6. [Reconstruction of a fire homicide after pouring denatured alcohol on the victim].

    PubMed

    Bohnert, Michael; Lehmann, Rainer; Simon, Karl-Heinz; Wehner, Frank

    2009-01-01

    A 48-year-old man died from extensive burns suffered especially on the upper part of the body during a dispute with his ex-wife, who had poured spirit or a spirit-water mixture over him. For initially unknown reasons, the man's clothing caught fire. Whereas the public prosecutor assumed that the woman had intentionally poured a larger amount of spirit over her ex-husband before setting fire to him, the defendant first claimed to have poured the rest of a water-spirit mixture left over from cleaning the windows over the man and that his clothing caught fire on lighting a cigarette. To clarify the course of events, fire tests with spirit in various dilutions were conducted, which showed that even with undiluted spirit a direct contact with the flame of at least 1 second is necessary to start a fire. There is no deflagration, if spirit is used as a fire accelerant. In the trial, the defendant made a confession and admitted to have poured a mixture of 75% spirit and 25% water over her ex-husband and set fire to his right sleeve with the intention to kill him.

  7. Numerical simulation of multi-mini-pot pouring process of a 13-ton steel ingot

    NASA Astrophysics Data System (ADS)

    Li, Jun; Ge, Honghao; Wang, Bin; Wu, Menghuai; Li, Jianguo

    2015-06-01

    Heavy ingots up to several hundred tons for power plant forgings exhibit large scale grain size and morphology differences, which are harmful to the design of forging parameters, and severe macrosegregation, which could not be eliminated during the subsequent forging and heat treatment processing. To cast these ingots with more homogeneity, a multi-mini-pot (MMP) poring technique is proposed, in which liquid metal is poured by multi-mini-pot (MMP) with intermission between each pot and solidification occurs step by step. In this paper, we are focus on the prediction of macrosegregation in MMP pouring process. A three-phase model is employed to study the MMP pouring process for a 13-ton heavy ingot. The main features of this three-phases model in such a heavy ingot can be quantitatively modelled: growth of columnar dendrite trunks; nucleation, growth and sedimentation of equiaxed crystals; thermosolutal convection of the melt; solute transport by both convection and crystal sedimentation; and the columnar-to-equiaxed transition (CET). The results shown that the MMP pouring technique tend to decrease the macrosegregation significantly by compared with the conventional method.

  8. Coprological evaluation of pour-on and injectable formulation of moxidectin in beef cattle

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Two, 28 day(d) studies were conducted with naturally infected beef calves to assess the effect of allo-grooming behavior on fecal egg count (FEG)reductions and coproculture counts following treatment with pour-on or injectable moxidectin. The first study was conducted at the USDA Southern Plains Ex...

  9. GENERIC VERIFICATION PROTOCOL: DISTRIBUTED GENERATION AND COMBINED HEAT AND POWER FIELD TESTING PROTOCOL

    EPA Science Inventory

    This report is a generic verification protocol by which EPA’s Environmental Technology Verification program tests newly developed equipment for distributed generation of electric power, usually micro-turbine generators and internal combustion engine generators. The protocol will ...

  10. Transformation a Echelle Fixe et Groupe de Renormalisation pour les Objets Fractals et Multifractals

    NASA Astrophysics Data System (ADS)

    Tremblay, Real

    Dans un premier temps, la description mathematique des fractals et des multifractais est resumee. Une description de quelques-uns des principaux systemes ou apparaissent des spectres d'exposants multifractals est presentee. L'accent est mis sur deux archetypes, le modele de percolation et le modele de rupture dielectrique. Un modele original de cascade multifractale avec interactions inspire des modeles phenomenologiques de la turbulence est presente et son spectre d'exposants calcule analytiquement. Ce travail elargit la classe de modeles pour lesquels on connait le spectre d'exposants exactement. Dans la seconde partie, on trouve une analyse critique de la transformation a echelle fixe. Sont discutees plus particulierement les proprietes que doivent posseder les diagrammes de base pour obtenir une transformation invariante d'echelle. Les differentes hypotheses arbitraires de la theorie sont mises en evidence. L'une de ces hypotheses concerne le traitement auto-coherent des conditions aux frontieres. Considerant cette hypothese comme valable, la theorie utilise la distribution de trous dans un ensemble de Cantor aleatoire. Un calcul exact de cette distribution est donne ici. Enfin, en troisieme et dernier lieu, on retrouve une analyse exhaustive du probleme du crossover dans le modele de percolation avec une resistance non-nulle pour les liens normalement isolants. A l'aide du groupe de renormalisation de Migdal-Kadanoff, on montre qu'il existe un seul exposant de crossover et une seule longueur de coherence. D'autres longueurs de correlation peuvent etre definies, mais elles demeurent dans un rapport fixe le long des axes propres du groupe de renormalisation. La multifractalite est donc, pour ce modele et ceux qui peuvent etre formules de facon analogue, compatible avec l'existence d'une seule longueur de coherence. Ces resultats sont d'application directe pour les proprietes electriques des milieux desordonnes.

  11. Quality Assurance for Consumers of Private Training Programs. Findings and Recommendations from the Consultation on the Regulation and Support of Training Providers in New Brunswick = Assurance de la qualite pour les consommateurs de programmes de formation du secteur prive. Resultats et recommandations a la suite des consultations relativement a la reglementation et au soutien des fournisseurs de cours de formation au Nouveau-Brunswick.

    ERIC Educational Resources Information Center

    New Brunswick Labour Force Development Board, Fredericton.

    Eighteen key individuals from the business, labor, and training sectors and other organizations concerned with the purchase of private training programs were consulted in an effort to determine the role of Canada's federal government and New Brunswick's provincial government in quality assurance for consumers of private training programs. There…

  12. Evaluation du potentiel radiosensibilisateur ou radioprotecteur/antioxydant de quelques composes selectionnes par dosimetrie par gel de polyacrylamide et dosimetre de Fricke, et utilisation de la filamentation par impulsion laser infrarouge fenitoseconde comme un nouveau et puissant faisceau pour la radiotherapie du cancer

    NASA Astrophysics Data System (ADS)

    Meesat, Ridthee

    In radiation treatment, a sufficiently high radiation dose must be delivered to the tissue volumes containing the tumor cells while the lowest possible dose should be deposited in surrounding healthy tissue. We developed an original approach that is fast and easy to implement for the early assessment of the efficiency of radiation sensitizers and protectors. In addition, we characterized a new femtosecond laser pulse irradiation technique. We are able to deposit a considerable dose with a very high dose rate inside a well-controlled macroscopic volume without deposition of energy in front or behind the target volume. The radioprotective efficiency was measured by irradiation of the Fricke solution incorporating a compound under study and measuring the corresponding production of ferric ions G(Fe3+). The production of ferric ions is most sensitive to the radical species produced in the radiolysis of water. We studied experimentally and simulated with a full Monte-Carlo computer code the radiation-induced chemistry of Fricke/cystamine solutions. Results clearly indicate that the protective effect of cystamine originates from its radical-capturing ability, which allows this compound to compete with the ferrous ions for the various free radicals - especially ·OH radicals and H· atoms - formed during irradiation of the surrounding water. The sensitizing capacity of radiation sensitizers was measured by irradiation of a polyacrylamide gel (PAG) dosimeter incorporating a compound under study and measuring the corresponding increase in the gradient between spin-spin relaxation rate (R2) and absorbed dose. We measured an irradiation energy-dependent increase in R 2-dose sensitivity for halogenated compounds or a decrease for radioprotectors. Finally, we studied a novel laser irradiation method called "filamentation". We showed that this phenomenon results in an unprecedented deposition of energy and the dose rate thus achieved exceeds by orders of magnitude values previously reported for the most intense clinical radiotherapy systems. Moreover, the length of the dose-free entrance region was adjusted by selecting the duration of femtosecond laser pulses. In addition, we provided evidence that the biological damage caused by this irradiation was similar to other ionizing radiation sources. Keywords: Radiotherapy, radiosensitization, radioprotection, laser, filamentation, dosimetry.

  13. Comment on "flexible protocol for quantum private query based on B92 protocol"

    NASA Astrophysics Data System (ADS)

    Chang, Yan; Zhang, Shi-Bin; Zhu, Jing-Min

    2017-03-01

    In a recent paper (Quantum Inf Process 13:805-813, 2014), a flexible quantum private query (QPQ) protocol based on B92 protocol is presented. Here we point out that the B92-based QPQ protocol is insecure in database security when the channel has loss, that is, the user (Alice) will know more records in Bob's database compared with she has bought.

  14. Utilisation de l'essai comete et du biomarqueur gamma-H2AX pour detecter les dommages induits a l'ADN cellulaire par le 5-bromodeoxyuridine post-irradiation

    NASA Astrophysics Data System (ADS)

    La Madeleine, Carole

    Ce memoire est presente a la Faculte de medecine et des sciences de la sante de l'Universite de Sherbrooke en vue de l'obtention du grade de maitre es sciences (M.Sc.) en radiobiologie (2009). Un jury a revise les informations contenues dans ce memoire. Il etait compose de professeurs de la Faculte de medecine et des sciences de la sante soit : Darel Hunting PhD, directeur de recherche (departement de medecine nucleaire et radiobiologie), Leon Sanche PhD, directeur de recherche (departement de medecine nucleaire et radiobiologie), Richard Wagner PhD, membre du programme (departement de medecine nucleaire et radiobiologie) et Guylain Boissonneault PhD, membre exterieur au programme (departement de biochimie). Le 5-bromodeoxyuridine (BrdU), un analogue halogene de la thymidine reconnu depuis les annees 60 comme etant un excellent radiosensibilisateur. L'hypothese la plus repandue au sujet de l'effet radio sensibilisant du BrdU est qu'il augmente le nombre de cassures simple et double brin lorsqu'il est incorpore dans l'ADN de la cellule et expose aux radiations ionisantes. Toutefois, de nouvelles recherches semblent remettre en question les observations precedentes. Ces dernieres etudes ont confirme que le BrdU est un bon radiosensibilisateur, car il augmente les dommages radio-induits dans l'ADN. Mais, c'est en etant incorpore dans une region simple brin que le BrdU radiosensibilise l'ADN. Ces recherches ont egalement revele pour la premiere fois un nouveau type de dommages produits lors de l'irradiation de l'ADN contenant du BrdU : les dimeres interbrins. Le but de ces travaux de recherche est de determiner si la presence de bromodeoxyuridine dans l'ADN augmente l'induction de bris simple et / ou double brin chez les cellules irradiees en utilisant de nouvelles techniques plus sensibles et specifiques que celles utilisees auparavant. Pour ce faire, les essais cometes et la detection des foci H2AX phosphorylee pourraient permettre d'etablir les effets engendres par

  15. MTP: An atomic multicast transport protocol

    NASA Technical Reports Server (NTRS)

    Freier, Alan O.; Marzullo, Keith

    1990-01-01

    Multicast transport protocol (MTP); a reliable transport protocol that utilizes the multicast strategy of applicable lower layer network architectures is described. In addition to transporting data reliably and efficiently, MTP provides the client synchronization necessary for agreement on the receipt of data and the joining of the group of communicants.

  16. Delay Tolerant Networking - Bundle Protocol Simulation

    NASA Technical Reports Server (NTRS)

    SeGui, John; Jenning, Esther

    2006-01-01

    In this paper, we report on the addition of MACHETE models needed to support DTN, namely: the Bundle Protocol (BP) model. To illustrate the useof MACHETE with the additional DTN model, we provide an example simulation to benchmark its performance. We demonstrate the use of the DTN protocol and discuss statistics gathered concerning the total time needed to simulate numerous bundle transmissions.

  17. STANDARD MEASUREMENT PROTOCOLS - FLORIDA RADON RESEARCH PROGRAM

    EPA Science Inventory

    The manual, in support of the Florida Radon Research Program, contains standard protocols for key measurements where data quality is vital to the program. t contains two sections. he first section, soil measurements, contains field sampling protocols for soil gas permeability and...

  18. Communication protocol standards for space data systems

    NASA Technical Reports Server (NTRS)

    Hooke, Adrian J.; Desjardins, Richard

    1990-01-01

    The main elements and requirements of advanced space data networks are identified. The communication protocol standards for use on space missions during the coming decades are described. In particular, the blending of high-performance space-unique data transmission techniques with off-the-shelf open systems interconnection (OSI) protocols is described.

  19. 16 CFR 1210.4 - Test protocol.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 2 2012-01-01 2012-01-01 false Test protocol. 1210.4 Section 1210.4... STANDARD FOR CIGARETTE LIGHTERS Requirements for Child Resistance § 1210.4 Test protocol. (a) Child test panel. (1) The test to determine if a lighter is resistant to successful operation by children uses...

  20. 16 CFR 1212.4 - Test protocol.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 2 2012-01-01 2012-01-01 false Test protocol. 1212.4 Section 1212.4... STANDARD FOR MULTI-PURPOSE LIGHTERS Requirements for Child-Resistance § 1212.4 Test protocol. (a) Child test panel. (1) The test to determine if a multi-purpose lighter is resistant to successful...

  1. Massive transfusion and massive transfusion protocol

    PubMed Central

    Patil, Vijaya; Shetmahajan, Madhavi

    2014-01-01

    Haemorrhage remains a major cause of potentially preventable deaths. Rapid transfusion of large volumes of blood products is required in patients with haemorrhagic shock which may lead to a unique set of complications. Recently, protocol based management of these patients using massive transfusion protocol have shown improved outcomes. This section discusses in detail both management and complications of massive blood transfusion. PMID:25535421

  2. A Simple XML Producer-Consumer Protocol

    NASA Technical Reports Server (NTRS)

    Smith, Warren; Gunter, Dan; Quesnel, Darcy; Biegel, Bryan (Technical Monitor)

    2001-01-01

    There are many different projects from government, academia, and industry that provide services for delivering events in distributed environments. The problem with these event services is that they are not general enough to support all uses and they speak different protocols so that they cannot interoperate. We require such interoperability when we, for example, wish to analyze the performance of an application in a distributed environment. Such an analysis might require performance information from the application, computer systems, networks, and scientific instruments. In this work we propose and evaluate a standard XML-based protocol for the transmission of events in distributed systems. One recent trend in government and academic research is the development and deployment of computational grids. Computational grids are large-scale distributed systems that typically consist of high-performance compute, storage, and networking resources. Examples of such computational grids are the DOE Science Grid, the NASA Information Power Grid (IPG), and the NSF Partnerships for Advanced Computing Infrastructure (PACIs). The major effort to deploy these grids is in the area of developing the software services to allow users to execute applications on these large and diverse sets of resources. These services include security, execution of remote applications, managing remote data, access to information about resources and services, and so on. There are several toolkits for providing these services such as Globus, Legion, and Condor. As part of these efforts to develop computational grids, the Global Grid Forum is working to standardize the protocols and APIs used by various grid services. This standardization will allow interoperability between the client and server software of the toolkits that are providing the grid services. The goal of the Performance Working Group of the Grid Forum is to standardize protocols and representations related to the storage and distribution of

  3. ANALYSIS OF DWPF SLUDGE BATCH 6 (MACROBATCH 7) POUR STREAM GLASS SAMPLES

    SciTech Connect

    Johnson, F.

    2012-01-20

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 6 (SB6), also referred to as Macrobatch 7 (MB7), in June 2010. SB6 is a blend of the heel of Tank 40 from Sludge Batch 5 (SB5), H-Canyon Np transfers and SB6 that was transferred to Tank 40 from Tank 51.1 SB6 was processed using Frit 418. Sludge is received into the DWPF Chemical Processing Cell (CPC) and is processed through the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator Tank (SME). The treated sludge slurry is then transferred to the Melter Feed Tank (MFT) and fed to the melter. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP) and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. The DWPF requested various analyses of radioactive glass samples obtained from the melter pour stream during processing of SB6 as well as reduction/oxidation (REDOX) analysis of MFT samples to determine the impact of Argon bubbling. Sample analysis followed the Task Technical and Quality Assurance Plan (TTQAP) and an Analytical Study Plan (ASP). Four Pour Stream (PS) glass samples and two MFT slurry samples were delivered to the Savannah River National Laboratory (SRNL) from the DWPF. Table 1-1 lists the sample information for each pour stream glass sample. SB6 PS3 (S03472) was selected as the official pour stream sample for SB6 and full analysis was requested. This report details the visual observations of the as-received SB6 PS No.3 glass sample as well as results for the chemical composition, Product Consistency Test (PCT), radionuclide content, noble metals, and glass density. REDOX results will be provided for all four pour stream samples and vitrified samples of MFT-558 and MFT-568A. Where appropriate, data from other pour stream samples will be provided.

  4. STANDARD OPERATING PROTOCOLS FOR DECOMMISSIONING

    SciTech Connect

    Foss, D. L.; Stevens, J. L.; Gerdeman, F. W.

    2002-02-25

    Decommissioning projects at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) sites are conducted under project-specific decision documents, which involve extensive preparation time, public comment periods, and regulatory approvals. Often, the decision documents must be initiated at least one year before commencing the decommissioning project, and they are expensive and time consuming to prepare. The Rocky Flats Environmental Technology Site (RFETS) is a former nuclear weapons production plant at which hazardous substances and wastes were released or disposed during operations. As a result of the releases, RFETS was placed on the National Priorities List in 1989, and is conducting cleanup activities under a federal facilities compliance agreement. Working closely with interested stakeholders and state and federal regulatory agencies, RFETS has developed and implemented an improved process for obtaining the approvals. The key to streamlining the approval process has been the development of sitewide decision documents called Rocky Flats Cleanup Agreement Standard Operating Protocols or ''RSOPs.'' RSOPs have broad applicability, and could be used instead of project-specific documents. Although no two decommissioning projects are exactly the same and they may vary widely in contamination and other hazards, the basic steps taken for cleanup are usually similar. Because of this, using RSOPs is more efficient than preparing a separate project-specific decision documents for each cleanup action. Over the Rocky Flats cleanup life cycle, using RSOPs has the potential to: (1) Save over 5 million dollars and 6 months on the site closure schedule; (2) Eliminate preparing one hundred and twenty project-specific decision documents; and (3) Eliminate writing seventy-five closure description documents for hazardous waste unit closure and corrective actions.

  5. Analyse de la prise en charge du nouveau-né dans le cadre de la stratégie nationale de subvention des accouchements et des soins obstétricaux et néonatals d'urgence au Centre Hospitalier Universitaire Pédiatrique Charles de Gaulle, Ouagadougou (Burkina Faso)

    PubMed Central

    Ouédraogo, Solange Odile Yugbaré; Yougbaré, Nestor; Kouéta, Fla; Dao; Ouédraogo, Moussa; Lougué, Claudine; Ludovic, Kam; Traoré, Ramata Ouédraogo; Yé, Diarra

    2015-01-01

    Introduction Il s'agit d'analyser la prise en charge du nouveau-né dans le cadre de la stratégie na-tionale de subvention des accouchements et des soins obstétricaux et néonatals d'urgence mis en place par le gouvernement du Burkina Faso en 2006. Méthodes Nous avons menée une étude à visée descriptive et analytique comportant un volet ré-trospectif du 01 janvier 2006 au 31 décembre 2010 portant sur les paramètres épidémiologiques, cliniques des nouveau-nés hospitalisés et un volet prospectif du 3 octobre 2011 au 29 février 2012 par une entrevue des accompagnateurs des nouveau-nés et des prestataires des services de santé. Résultats Les hospitalisations ont augmenté de 43,65% entre 2006 à 2010 Le taux de mortalité néo-natale hospitalière qui était de 11,04% a connu une réduction moyenne annuelle de 3,95%. L'entrevue a porté sur 110 accompagnateurs et 76 prestataires. La majorité des prestataires (97,44%) et des ac-compagnateurs (88,18%) étaient informés de la stratégie mais n'avait pas une connaissance exacte de sa définition. Les prestataires (94,74%) ont signalé des ruptures de médicaments, consommables médicaux et des pannes d’ appareils de laboratoire et d'imagerie. Parmi les accompagnateurs (89%) disaient être satisfaits des services offerts et (72,89%) trouvaient les coûts abordables mais évoquaient les difficultés du transport. Conclusion: La subvention a amélioré la prise en charge du nou-veau-né mais son optimisation nécessiterait une meilleur information et implication de tous les acteurs. Conclusion La subvention a amélioré la prise en charge du nouveau-né mais son optimisation nécessiterait une meilleur information et implication de tous les acteurs. PMID:26161166

  6. Snakebite management in Iran: Devising a protocol

    PubMed Central

    Monzavi, Seyed Mostafa; Dadpour, Bita; Afshari, Reza

    2014-01-01

    Background: Snakebite in Iran has been a health concern. However, management of snakebite is not standardized and varies from center to center. This study is aimed at devising an evidence-based comprehensive protocol for snakebite management in Iran, to reduce unnecessary variations in practice. Materials and Methods: A narrative search in electronic databases was performed. Fifty peer-reviewed articles, guidelines, and textbooks were reviewed and practical details were extracted. Our currently used protocol in the Mashhad Toxicology Center was supplemented with this information. Consequently an improved wide-range protocol was developed. The protocol was then discussed and amended within a focus group comprised of medical toxicologists and internal medicine specialists. The amended version was finally discussed with expert physicians specialized in different areas of medicine, to be optimized by supplementing other specific considerations. Results: During a one-year process, the protocol was finalized. The final version of the protocol, which was designed in six steps, comprised of three components: A schematic algorithm, a severity grading scale, and instructions for supportive and adjunctive treatments. The algorithm pertains to both Viperidae and Elapidae snakebite envenomations and consists of a planned course of action and dosing of antivenom, based on the severity of the envenomation. Conclusion: Snakebite envenomation is a clinical toxicologic emergency, which needs to be treated in a timely and organized manner. Hence, a multi-aspect protocol was designed to improve the clinical outcomes, reduce unnecessary administration of antivenom, and help physicians make more proper clinical judgments. PMID:24778670

  7. Le domaine des co-infections et des maladies concomitantes du Réseau canadien pour les essais VIH des IRSC : lignes directrices canadiennes pour la prise en charge et le traitement de la co-infection par le VIH et l’hépatite C chez les adultes

    PubMed Central

    Hull, Mark; Giguère, Pierre; Klein, Marina; Shafran, Stephen; Tseng, Alice; Côté, Pierre; Poliquin, Marc; Cooper, Curtis

    2014-01-01

    HISTORIQUE : De 20 % à 30 % des Canadiens qui vivent avec le VIH sont co-infectés par le virus de l’hépatite C (VHC), lequel est responsable d’une morbidité et d’une mortalité importantes. La prise en charge du VIH et du VHC est plus complexe en raison de l’évolution accélérée de la maladie hépatique, du choix et des critères d’initiation de la thérapie antirétrovirale et du traitement anti-VHC, de la prise en charge de la santé mentale et des toxicomanies, des obstacles socioéconomiques et des interactions entre les nouvelles thérapies antivirales à action directe du VHC et les antirétroviraux OBJECTIF : Élaborer des normes nationales de prise en charge des adultes co-infectés par le VHC et le VIH dans le contexte canadien. MÉTHODOLOGIE : Le Réseau canadien pour les essais VIH des Instituts de recherche en santé du Canada a réuni un groupe d’experts possédant des compétences cliniques en co-infection par le VIH et le VHC pour réviser les publications à jour ainsi que les lignes directrices et les protocoles en place. Après une vaste sollicitation afin d’obtenir des points de vue, le groupe de travail a approuvé des recommandations consensuelles, qu’il a caractérisées au moyen d’une échelle de qualité des preuves fondée sur la classe (bienfaits par rapport aux préjudices) et sur la catégorie (degré de certitude). RÉSULTATS : Toutes les personnes co-infectées par le VIH et le VHC devraient subir une évaluation en vue de recevoir un traitement du VHC. Les personnes qui ne sont pas en mesure d’entreprendre un traitement du VHC devraient être soignées pour le VIH afin de ralentir l’évolution de la maladie hépatique. La norme de traitement du VHC de génotype 1 est un régime comprenant de l’interféron pégylé et de la ribavirine dosée en fonction du poids, associés à un inhibiteur de la protéase du VHC. Pour les génotypes 2 ou 3, une bithérapie classique est recommandée pendant 24 semaines s

  8. Overview of the InterGroup protocols

    SciTech Connect

    Berket, Karlo; Agarwal, Deborah A.; Melliar-Smith, P. Michael; Moser, Louise E.

    2001-03-01

    Existing reliable ordered group communication protocols have been developed for local-area networks and do not, in general, scale well to large numbers of nodes and wide-area networks. The InterGroup suite of protocols is a scalable group communication system that introduces a novel approach to handling group membership, and supports a receiver-oriented selection of service. The protocols are intended for a wide-area network, with a large number of nodes, that has highly variable delays and a high message loss rate, such as the Internet. The levels of the message delivery service range from unreliable unordered to reliable group timestamp ordered.

  9. Effects of pouring temperature and slurry viscosity on heat transfer and surface roughness in lost foam casting

    NASA Astrophysics Data System (ADS)

    Shayganpour, A.; Idris, M. H.; Izman, S.; Farahany, S.

    2012-06-01

    The effects of pouring temperature and slurry viscosity in terms of heat transfer on surface roughness during lost foam casting (LFC) of LM6 alloy were investigated experimentally. Heat transfer of molten materials is an important factors to changes the microstructure which is considered in the present study. It is primarily dependent on the pouring temperature, casting thickness, mould material, mould temperature and surrounding medium. The pouring temperature changed from 700 to740°C and slurry viscosity altered from 20 to 36 sec. A full 2-level factorial design experimental technique was used to identify the significant factors that effect on surface roughness of castings. The results show that surface roughness improved by lower pouring temperature, whereas slurry viscosity has less influence on the quality of surface.

  10. Numerical Study of Impingement Location of Liquid Jet Poured from a Tilting Ladle with Lip Spout

    NASA Astrophysics Data System (ADS)

    Castilla, R.; Gamez-Montero, P. J.; Raush, G.; Khamashta, M.; Codina, E.

    2017-04-01

    A new approach for simulating liquid poured from a tilting lip spout is presented, using neither a dynamic mesh nor the moving solid solution method. In this case only the tilting ladle is moving, so we propose to rotate the gravitational acceleration at an angular velocity prescribed by a geometrical and dynamical calculation to keep the poured flow rate constant. This angular velocity is applied to modify the orientation of the gravity vector in computational fluid dynamics (CFD) simulations using the OpenFOAM® toolbox. Also, fictitious forces are considered. The modified solver is used to calculate the impingement location for six spout geometries and compare the jet dispersion there. This method could offer an inexpensive tool to calculate optimal spout geometries to reduce sprue size in the metal casting industry.

  11. Effect of Storage Time of Extended-Pour and Conventional Alginate Impressions on Dimensional Accuracy of Casts

    PubMed Central

    Rohanian, Ahmad; Ommati Shabestari, Ghasem; Zeighami, Somayeh; Samadi, Mohammad Javad; Shamshiri, Ahmad Reza

    2014-01-01

    Objectives: Some manufacturers claim to have produced new irreversible hydro-colloids that are able to maintain their dimensional stability during storage. The present study evaluated the effect of storage time on dimensional stability of three alginates: Hydrogum 5, Tropicalgin and Alginoplast. Materials and Methods: In this experimental in-vitro trial, a total of 90 alginate impressions were made from a Dentoform model using Hydrogum 5, Tropicalgin and Alginoplast alginates. The impressions were stored in a sealed plastic bag without a damp paper towel for 0, 24, 48, 72 and 120 hours and then poured with type III dental stone. Cross-arch (facial of 6 to facial of 6 on the opposite side) and antero-posterior (distal of right first molar to the ipsilateral central incisor) measurements were made with a digital caliper on the casts. Data were analyzed by two-way and one-way ANOVA and Tukey’s post-hoc test (P<0.05). Results: Alginate type and the pouring time significantly affected the dimensional stability of alginate impressions (both Ps<0.001). Pouring of Hydrogum 5 impressions can be delayed for up to 120 hours without significant dimensional changes. Alginoplast impressions may be poured after 72 hours, but Tropicalgin should be poured immediately and the storage time should not be more than 24 hours. Conclusion: Immediate pouring of alginate impressions provides the highest accuracy in reproducing the teeth and adjacent tissues; however, this study demonstrated that pouring may be delayed for up to five days using extended-pour (Hydrogum 5) alginates. PMID:25628695

  12. A new portable vibrator for plaster pouring: effect on the marginal fit at cylinder-abutment

    PubMed Central

    de ANDRADE, Pâmela Cândida Aires Ribas; LUTHI, Leonardo Flores; STANLEY, Kyle; CARDOSO, Antônio Carlos

    2012-01-01

    Objective The aim of this study was to test a new portable vibrator for plaster pouring (developed for this purpose), comparing the effect of its use on the accuracy of working cast of implant-supported restorations to the conventional vibrator. Material and methods From a master cast with 2 implants, 30 transfer moldings were made randomly and divided into three groups: Group I (GI): pouring performed in an outsourced dental laboratory with conventional plaster vibrator (10 casts), Group II (GII): pouring performed in the laboratory of the Federal University of Santa Catarina (UFSC) with conventional plaster vibrator (10 casts) and Group III (GIII): pouring performed with the portable vibrator fabricated for this study (10 casts). The position of the analogue and marginal adaptation of the infrastructure were verified by testing the single screw on the master model and on the working model. The measurement of misfit was blindly performed with a precision microscope and analyzing unit, Quadra-Check 200. The data were statistically analyzed by analysis of variance (ANOVA) and the Holm-Sidak test (α=0.05). Results Means±standard deviations were as follows: GI: 19.19±4.73 µm; GII: 21.72±5.41 µm; GIII: 13.5±2.39 µm (P<0.05), with GIII significantly lower as compared to the other groups. Conclusion Within the limitations of this study, it was concluded that a greater accuracy of working cast was achieved when a portable vibrator was used for casting molds. PMID:23138736

  13. Accuracy of Gypsum Casts after Different Impression Techniques and Double Pouring

    PubMed Central

    Silva, Stephania Caroline Rodolfo; Messias, Aion Mangino; Abi-Rached, Filipe de Oliveira; de Souza, Raphael Freitas; Reis, José Maurício dos Santos Nunes

    2016-01-01

    This study evaluated the accuracy of gypsum casts after different impression techniques and double pouring. Ten patients were selected and for each one it was obtained 5 partial putty/wash impressions with vinyl polysiloxane (VPS) material from teeth #13 to #16 with partial metal stock trays. The following techniques were performed: (1) one-step; two-step relief with: (2) PVC film; (3) slow-speed tungsten carbide bur and scalpel blade, (4) small movements of the tray and (5) without relief—negative control. The impressions were disinfected with 0.5% sodium hypochlorite for 10 minutes and stored during 110 and 230 minutes for the first and second pouring, respectively, with type IV gypsum. Three intra-oral lateral photographs of each patient were taken using a tripod and a customized radiographic positioner. The images were imported into ImageJ software and the total area of the buccal surface from teeth #13 to #16 was measured. A 4.0% coefficient of variance was criterion for using these measurements as Baseline values. The casts were photographed and analyzed using the same standardization for the clinical images. The area (mm2) obtained from the difference between the measurements of each gypsum cast and the Baseline value of the respective patient were calculated and analyzed by repeated-measures two way-ANOVA and Mauchly’s Sphericity test (α = 0.05). No significant effect was observed for Impression technique (P = 0.23), Second pouring (P = 0.99) and their interaction (P = 0.25). The impression techniques and double pouring did not influence the accuracy of the gypsum casts. PMID:27736967

  14. Accuracy of Gypsum Casts after Different Impression Techniques and Double Pouring.

    PubMed

    Silva, Stephania Caroline Rodolfo; Messias, Aion Mangino; Abi-Rached, Filipe de Oliveira; de Souza, Raphael Freitas; Reis, José Maurício Dos Santos Nunes

    2016-01-01

    This study evaluated the accuracy of gypsum casts after different impression techniques and double pouring. Ten patients were selected and for each one it was obtained 5 partial putty/wash impressions with vinyl polysiloxane (VPS) material from teeth #13 to #16 with partial metal stock trays. The following techniques were performed: (1) one-step; two-step relief with: (2) PVC film; (3) slow-speed tungsten carbide bur and scalpel blade, (4) small movements of the tray and (5) without relief-negative control. The impressions were disinfected with 0.5% sodium hypochlorite for 10 minutes and stored during 110 and 230 minutes for the first and second pouring, respectively, with type IV gypsum. Three intra-oral lateral photographs of each patient were taken using a tripod and a customized radiographic positioner. The images were imported into ImageJ software and the total area of the buccal surface from teeth #13 to #16 was measured. A 4.0% coefficient of variance was criterion for using these measurements as Baseline values. The casts were photographed and analyzed using the same standardization for the clinical images. The area (mm2) obtained from the difference between the measurements of each gypsum cast and the Baseline value of the respective patient were calculated and analyzed by repeated-measures two way-ANOVA and Mauchly's Sphericity test (α = 0.05). No significant effect was observed for Impression technique (P = 0.23), Second pouring (P = 0.99) and their interaction (P = 0.25). The impression techniques and double pouring did not influence the accuracy of the gypsum casts.

  15. Methodologies nouvelles pour la realisation d'essais dans la soufflerie Price-Paidoussis

    NASA Astrophysics Data System (ADS)

    Flores Salinas, Manuel

    Le present memoire en genie de la production automatisee vise a decrire le travail effectue dans la soufflerie Price-Paidoussis du laboratoire LARCASE pour trouver les methodologies experimentales et les procedures de tests, qui seront utilisees avec les modeles d'ailes actuellement au laboratoire. Les methodologies et procedures presentees ici vont permettre de preparer les tests en soufflerie du projet MDO-505 Architectures et technologies deformables pour l'amelioration des performances des ailes, qui se derouleront durant l'annee 2015. D'abord, un bref historique des souffleries subsoniques sera fait. Les differentes sections de la soufflerie Price-Paidoussis seront decrites en mettant l'emphase sur leur influence dans la qualite de l'ecoulement qui se retrouve dans la chambre d'essai. Ensuite, une introduction a la pression, a sa mesure lors de tests en soufflerie et les instruments utilises pour les tests en soufflerie au laboratoire LARCASE sera presente, en particulier le capteur piezoelectrique XCQ-062. Une attention particuliere sera portee au mode de fonctionnement, a son installation, a la mesure et a la detection des frequences et aux sources d'erreurs lorsqu'on utilise des capteurs de haute precision comme la serie XCQ-062 du fournisseur Kulite. Finalement, les procedures et les methodologies elaborees pour les tests dans la soufflerie Price-Paidoussis seront utilisees sur quatre types d'ailes differentes. L'article New methodology for wind tunnel calibration using neural networks - EGD approch portant sur une nouvelle facon de predire les caracteristiques de l'ecoulement a l'interieur de la soufflerie Price-Paidoussis se trouve dans l'annexe 2 de ce document. Cet article porte sur la creation d'un reseau de neurones multicouche et sur l'entrainement des neurones, Ensuite, une comparaison des resultats du reseau de neurones a ete fait avec des valeurs simules avec le logiciel Fluent.

  16. Investigation of the Pour Point Depression Ability of Polyalkyl Acrylate Additives After Sonication

    NASA Astrophysics Data System (ADS)

    Volkova, G. I.; Anufriev, R. V.; Yudina, N. V.; Tchaikovskaya, O. N.

    2016-12-01

    Effect of ultrasonic treatment on the molecular parameters of polymeric additives based on polyalkyl acrylate is investigated. The viscosity, temperature, and energy characteristics of high-wax crude oil and solutions of petroleum wax in decane and aviation fuel TS-1 in the presence of initial and ultrasonified additives are determined. Results obtained indicate that the pour point depression ability of the additives is not reduced after treatment in an ultrasonic field.

  17. SPERTI Reactor Pit Building (PER605) under construction. Poured concrete foundation ...

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

    SPERT-I Reactor Pit Building (PER-605) under construction. Poured concrete foundation will enclosure a "Pit" into which the reactor vessel will be placed. Steel framework has been erected. To left of view is instrument cell (PER-606), constructed of concrete block. Photographer: R.G. Larsen. Date: April 22, 1955. INEEL negative no. 55-1000 - Idaho National Engineering Laboratory, SPERT-I & Power Burst Facility Area, Scoville, Butte County, ID

  18. Un accumulateur echangeur de chaleur hybride pour la gestion simultanee des energies solaire et electrique

    NASA Astrophysics Data System (ADS)

    Ait Hammou, Zouhair

    Cette etude porte sur la conception d'un accumulateur echangeur de chaleur hybride (AECH) pour la gestion simultanee des energies solaire et electrique. Un modele mathematique reposant sur les equations de conservation de la quantite d'energie est expose. Il est developpe pour tester differents materiaux de stockage, entre autres, les materiaux a changement de phase (solide/liquide) et les materiaux de stockage sensible. Un code de calcul est mis en eeuvre sur ordinateur, puis valide a l'aide des resultats analytiques et numeriques de la litterature. En parallele, un prototype experimental a echelle reduite est concu au laboratoire afin de valider le code de calcul. Des simulations sont effectuees pour etudier les effets des parametres de conception et des materiaux de stockage sur le comportement thermique de l'AECH et sur la consommation d'energie electrique. Les resultats des simulations sur quatre mois d'hiver montrent que la paraffine n-octadecane et l'acide caprique sont deux candidats souhaitables pour le stockage d'energie destine au chauffage des habitats. L'utilisation de ces deux materiaux dans l'AECH permet de reduire la consommation d'energie electrique de 32% et d'aplanir le probleme de pointe electrique puisque 90% de l'energie electrique est consommee durant les heures creuses. En plus, en adoptant un tarif preferentiel, le calcul des couts lies a la consommation d'energie electrique montre que le consommateur adoptant ce systeme beneficie d'une reduction de 50% de la facture d'electricite.

  19. Protocol Gas Verification Program Audit Reports

    EPA Pesticide Factsheets

    View the full reports from 2010 and 2013 of the PGVP audits, which tested the EPA Protocol gases that are used to calibrate continuous emission monitoring systems (CEMS), and the instruments used in EPA reference methods.

  20. A practical quantum bit commitment protocol

    NASA Astrophysics Data System (ADS)

    Arash Sheikholeslam, S.; Aaron Gulliver, T.

    2012-01-01

    In this paper, we introduce a new quantum bit commitment protocol which is secure against entanglement attacks. A general cheating strategy is examined and shown to be practically ineffective against the proposed approach.

  1. Entanglement distillation protocols and number theory

    NASA Astrophysics Data System (ADS)

    Bombin, H.; Martin-Delgado, M. A.

    2005-09-01

    We show that the analysis of entanglement distillation protocols for qudits of arbitrary dimension D benefits from applying basic concepts from number theory, since the set ZDn associated with Bell diagonal states is a module rather than a vector space. We find that a partition of ZDn into divisor classes characterizes the invariant properties of mixed Bell diagonal states under local permutations. We construct a very general class of recursion protocols by means of unitary operations implementing these local permutations. We study these distillation protocols depending on whether we use twirling operations in the intermediate steps or not, and we study them both analytically and numerically with Monte Carlo methods. In the absence of twirling operations, we construct extensions of the quantum privacy algorithms valid for secure communications with qudits of any dimension D . When D is a prime number, we show that distillation protocols are optimal both qualitatively and quantitatively.

  2. Authentication Protocol using Quantum Superposition States

    SciTech Connect

    Kanamori, Yoshito; Yoo, Seong-Moo; Gregory, Don A.; Sheldon, Frederick T

    2009-01-01

    When it became known that quantum computers could break the RSA (named for its creators - Rivest, Shamir, and Adleman) encryption algorithm within a polynomial-time, quantum cryptography began to be actively studied. Other classical cryptographic algorithms are only secure when malicious users do not have sufficient computational power to break security within a practical amount of time. Recently, many quantum authentication protocols sharing quantum entangled particles between communicators have been proposed, providing unconditional security. An issue caused by sharing quantum entangled particles is that it may not be simple to apply these protocols to authenticate a specific user in a group of many users. An authentication protocol using quantum superposition states instead of quantum entangled particles is proposed. The random number shared between a sender and a receiver can be used for classical encryption after the authentication has succeeded. The proposed protocol can be implemented with the current technologies we introduce in this paper.

  3. Evolution of Natural Attenuation Evaluation Protocols

    EPA Science Inventory

    Traditionally the evaluation of the efficacy of natural attenuation was based on changes in contaminant concentrations and mass reduction. Statistical tools and models such as Bioscreen provided evaluation protocols which now are being approached via other vehicles including m...

  4. Putting the Human Back in the Protocol

    NASA Astrophysics Data System (ADS)

    Christianson, Bruce

    Hello, everyone, and welcome to the 14th International Security Protocols Workshop. I’m going to start with a quotation from someone who, at least in principle, is in charge of a very different security community than ours:

  5. 16 CFR 1210.4 - Test protocol.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... STANDARD FOR CIGARETTE LIGHTERS Requirements for Child Resistance § 1210.4 Test protocol. (a) Child test... operating components that could affect child resistance to verify that they are within reasonable...

  6. 16 CFR 1212.4 - Test protocol.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... STANDARD FOR MULTI-PURPOSE LIGHTERS Requirements for Child-Resistance § 1212.4 Test protocol. (a) Child... could affect child resistance to verify that they are within reasonable operating tolerances for...

  7. 16 CFR 1212.4 - Test protocol.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... STANDARD FOR MULTI-PURPOSE LIGHTERS Requirements for Child-Resistance § 1212.4 Test protocol. (a) Child... could affect child resistance to verify that they are within reasonable operating tolerances for...

  8. 16 CFR 1210.4 - Test protocol.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... STANDARD FOR CIGARETTE LIGHTERS Requirements for Child Resistance § 1210.4 Test protocol. (a) Child test... operating components that could affect child resistance to verify that they are within reasonable...

  9. A Look Back at the Montreal Protocol

    NASA Video Gallery

    The Montreal Protocol is an international treaty designed to protect the ozone layer. This video takes a look back at how scientists, industry leaders, and policy makers came together to regulate C...

  10. A Demand Access Protocol for Space Applications

    NASA Technical Reports Server (NTRS)

    Gao, Jay L.; Leang, Dee

    2007-01-01

    This paper describes a demand access protocol for space communications, which is a messaging procedure that facilitates the exchange of resource requests and grants between users and service providers. A minimal set of operational and environmental needs and constraints are assumed since the intent is to keep the protocol flexible and efficient for a wide-range of envisioned NASA robotic and human exploration missions. The protocol described in this document defines the message format and procedures used to ensure proper and correct functioning of a demand access communications system, which must operate under customized resource management policies applied by the users and service providers. This protocol also assumes a minimal set of capabilities from the underlying communications system so that no unique requirements are imposed on the communications sub-systems.

  11. Routing Protocols in Wireless Sensor Networks

    PubMed Central

    Villalba, Luis Javier García; Orozco, Ana Lucila Sandoval; Cabrera, Alicia Triviño; Abbas, Cláudia Jacy Barenco

    2009-01-01

    The applications of wireless sensor networks comprise a wide variety of scenarios. In most of them, the network is composed of a significant number of nodes deployed in an extensive area in which not all nodes are directly connected. Then, the data exchange is supported by multihop communications. Routing protocols are in charge of discovering and maintaining the routes in the network. However, the appropriateness of a particular routing protocol mainly depends on the capabilities of the nodes and on the application requirements. This paper presents a review of the main routing protocols proposed for wireless sensor networks. Additionally, the paper includes the efforts carried out by Spanish universities on developing optimization techniques in the area of routing protocols for wireless sensor networks. PMID:22291515

  12. NREL Test-to-Failure Protocol (Presentation)

    SciTech Connect

    Hacke, P.

    2012-03-01

    The presentation describes the test-to-failure protocol that was developed and piloted at NREL, stressing PV modules with multiple applications of damp heat (with bias) and thermal cycling until they fail.

  13. Hybrid protocol of remote implementations of quantum operations

    NASA Astrophysics Data System (ADS)

    Zhao, Ning Bo; Wang, An Min

    2007-12-01

    We propose a protocol of remote implementations of quantum operations by hybridizing bidirectional quantum-state teleportation (BQST) [Huelga , Phys. Rev. A 63, 042303 (2001)] and the Wang protocol [Wang, Phys. Rev. A 74, 032317 (2006)]. The protocol is available for remote implementations of quantum operations in the restricted sets specified in the paper. We also give a proof of the protocol and point out its optimization. As an extension, this hybrid protocol can be reduced to the BQST and Wang protocols.

  14. Field Monitoring Protocol. Heat Pump Water Heaters

    SciTech Connect

    Sparn, B.; Earle, L.; Christensen, D.; Maguire, J.; Wilson, E.; Hancock, C. E.

    2013-02-01

    This document provides a standard field monitoring protocol for evaluating the installed performance of Heat Pump Water Heaters in residential buildings. The report is organized to be consistent with the chronology of field test planning and execution. Research questions are identified first, followed by a discussion of analysis methods, and then the details of measuring the required information are laid out. A field validation of the protocol at a house near the NREL campus is included for reference.

  15. Protocol for communications in potentially noisy environments

    DOEpatents

    Boyd, Gerlad M.; Farrow, Jeffrey

    2016-02-09

    A communications protocol that is designed for transmission of data in networks that are subjected to harsh conditions is described herein. A network includes a plurality of devices, where the devices comprise respective nodes. The nodes are in communication with one another by way of a central network hub. The protocol causes the nodes to transmit data over a network bus at different data rates depending upon whether the nodes are operating normally or an arbitration procedure has been invoked.

  16. ABM Clinical Protocol #20: Engorgement, Revised 2016.

    PubMed

    Berens, Pamela; Brodribb, Wendy

    2016-05-01

    A central goal of The Academy of Breastfeeding Medicine is the development of clinical protocols for managing common medical problems that may impact breastfeeding success. These protocols serve only as guidelines for the care of breastfeeding mothers and infants and do not delineate an exclusive course of treatment or serve as standards of medical care. Variations in treatment may be appropriate according to the needs of an individual patient.

  17. ABM clinical protocol #13: contraception during breastfeeding.

    PubMed

    2006-01-01

    A central goal of the Academy of Breastfeeding Medicine is the development of clinical protocols for managing common medical problems that may influence breastfeeding success. These protocols serve only as guidelines for the care of breastfeeding mothers and infants and do not delineate an exclusive course of treatment or serve as standards of medical care. Variations in treatment may be appropriate according to the needs of an individual patient.

  18. Protocol Development | Division of Cancer Prevention

    Cancer.gov

    The chemoprevention Phase I and II consortia must submit Letters of Intent for review and approval prior to the submission and review of the protocol. Letter of Intent (LOI) Process The chemoprevention Phase I and II consortia must submit Letters of Intent for review and approval prior to the submission and review of the protocol. DCP will solicit Letters of Intent from investigators who want to conduct clinical trials with specific agents. |

  19. Field Monitoring Protocol: Heat Pump Water Heaters

    SciTech Connect

    Sparn, B.; Earle, L.; Christensen, D.; Maguire, J.; Wilson, E.; Hancock, E.

    2013-02-01

    This document provides a standard field monitoring protocol for evaluating the installed performance of Heat Pump Water Heaters in residential buildings. The report is organized to be consistent with the chronology of field test planning and execution. Research questions are identified first, followed by a discussion of analysis methods, and then the details of measuring the required information are laid out. A field validation of the protocol at a house near the NREL campus is included for reference.

  20. CT protocol management: simplifying the process by using a master protocol concept.

    PubMed

    Szczykutowicz, Timothy P; Bour, Robert K; Rubert, Nicholas; Wendt, Gary; Pozniak, Myron; Ranallo, Frank N

    2015-07-08

    This article explains a method for creating CT protocols for a wide range of patient body sizes and clinical indications, using detailed tube current information from a small set of commonly used protocols. Analytical expressions were created relating CT technical acquisition parameters which can be used to create new CT protocols on a given scanner or customize protocols from one scanner to another. Plots of mA as a function of patient size for specific anatomical regions were generated and used to identify the tube output needs for patients as a function of size for a single master protocol. Tube output data were obtained from the DICOM header of clinical images from our PACS and patient size was measured from CT localizer radiographs under IRB approval. This master protocol was then used to create 11 additional master protocols. The 12 master protocols were further combined to create 39 single and multiphase clinical protocols. Radiologist acceptance rate of exams scanned using the clinical protocols was monitored for 12,857 patients to analyze the effectiveness of the presented protocol management methods using a two-tailed Fisher's exact test. A single routine adult abdominal protocol was used as the master protocol to create 11 additional master abdominal protocols of varying dose and beam energy. Situations in which the maximum tube current would have been exceeded are presented, and the trade-offs between increasing the effective tube output via 1) decreasing pitch, 2) increasing the scan time, or 3) increasing the kV are discussed. Out of 12 master protocols customized across three different scanners, only one had a statistically significant acceptance rate that differed from the scanner it was customized from. The difference, however, was only 1% and was judged to be negligible. All other master protocols differed in acceptance rate insignificantly between scanners. The methodology described in this paper allows a small set of master protocols to be

  1. CT protocol management: simplifying the process by using a master protocol concept.

    PubMed

    Szczykutowicz, Timothy P; Bour, Robert K; Rubert, Nicholas; Wendt, Gary; Pozniak, Myron; Ranallo, Frank N

    2015-07-01

    This article explains a method for creating CT protocols for a wide range of patient body sizes and clinical indications, using detailed tube current information from a small set of commonly used protocols. Analytical expressions were created relating CT technical acquisition parameters which can be used to create new CT protocols on a given scanner or customize protocols from one scanner to another. Plots of mA as a function of patient size for specific anatomical regions were generated and used to identify the tube output needs for patients as a function of size for a single master protocol. Tube output data were obtained from the DICOM header of clinical images from our PACS and patient size was measured from CT localizer radiographs under IRB approval. This master protocol was then used to create 11 additional master protocols. The 12 master protocols were further combined to create 39 single and multiphase clinical protocols. Radiologist acceptance rate of exams scanned using the clinical protocols was monitored for 12,857 patients to analyze the effectiveness of the presented protocol management methods using a two-tailed Fisher's exact test. A single routine adult abdominal protocol was used as the master protocol to create 11 additional master abdominal protocols of varying dose and beam energy. Situations in which the maximum tube current would have been exceeded are presented, and the trade-offs between increasing the effective tube output via 1) decreasing pitch, 2) increasing the scan time, or 3) increasing the kV are discussed. Out of 12 master protocols customized across three different scanners, only one had a statistically significant acceptance rate that differed from the scanner it was customized from. The difference, however, was only 1% and was judged to be negligible. All other master protocols differed in acceptance rate insignificantly between scanners. The methodology described in this paper allows a small set of master protocols to be

  2. Magnesium Sulphate for Eclampsia and Fetal Neuroprotection: A Comparative Analysis of Protocols Across Canadian Tertiary Perinatal Centres.

    PubMed

    De Silva, Dane A; Sawchuck, Diane; von Dadelszen, Peter; Basso, Melanie; Synnes, Anne R; Liston, Robert M; Magee, Laura A

    2015-11-01

    Contexte : L’utilisation de sulfate de magnésium (MgSO4) a été recommandée à des fins de neuroprotection fœtale dans le but de prévenir l’infirmité motrice cérébrale; des sociétés nationales adoptent d’ailleurs de nouvelles lignes directrices quant à son utilisation. Un projet de transfert des connaissances visant la mise en œuvre des lignes directrices canadiennes est en cours. Le rôle du MgSO4 en ce qui concerne la neuroprotection fœtale ne peut être abordé sans que l’on mentionne son utilisation dans le cadre de la prophylaxie et de la prise en charge de l’éclampsie. Ainsi, pour explorer la standardisation de l’utilisation de MgSO4 au Canada, nous avons cherché à comparer les protocoles locaux qui en régissent l’utilisation en matière d’éclampsie et de neuroprotection fœtale dans les centres périnataux tertiaires. Méthodes : Nous avons demandé à 25 centres périnataux tertiaires canadiens de nous soumettre leurs protocoles quant à l’utilisation du MgSO4 aux fins de la neuroprotection fœtale et de la prophylaxie / prise en charge de l’éclampsie. Les renseignements que nous avons tirés de ces protocoles comprenaient la date du protocole, les définitions des indications de traitement, les détails de l’administration du MgSO4, le monitorage maternel et fœtal, l’antidote pour contrer la toxicité et les symptômes anormaux nécessitant l’offre de soins médicaux. Des analyses descriptives ont été utilisées pour comparer les protocoles de ces centres aux définitions connues de la prééclampsie. Des données issues du Réseau périnatal canadien (RPC) ont été utilisées pour vérifier ce qui se faisait dans le cadre de la pratique clinique. Résultats : Vingt-deux des 25 centres nous ont soumis leurs protocoles de prévention / prise en charge de l’éclampsie. Onze de ces centres nous ont fourni une définition de ce qui était considéré comme une prééclampsie justifiant une prise en

  3. Instrumentation pour la spectroscopie laser sur faisceau d'ions rapides

    NASA Astrophysics Data System (ADS)

    Bazin, Marc

    Devant l'emergence des technologies exploitant l'infiniment petit, la spectroscopie atomique et moleculaire devient de plus en plus incontournable pour comprendre precisement les mecanismes quantiques impliques dans l'interaction des molecules. C'est le cas notamment de la nanotechnologie, de la dynamique reactionnelle des gaz a effet de serre ou simplement de l'identification des molecules constituant certains objets de l'astrophysique. Bien qu'un travail considerable soit deja accompli pour comprendre la dissociation ou la formation des molecules simples, il reste a vaincre la complexite des mecanismes impliques lorsque les molecules possedent plus de trois noyaux. Parmi les rares techniques de spectroscopie a tres haute resolution (jusqu'a la structure hyperfine), la spectroscopie laser sur faisceaux d'ions rapides est une methode experimentale eprouvee depuis trois decennies environ. Cette methode spectroscopique fournit des resultats comptant parmi les meilleurs pour obtenir des constantes moleculaires precises et permettre la reduction du spectre moleculaire. Une particularite remarquable de notre instrument est la possibilite d'enregistrer le signal de fragmentation moleculaire par laser via les etats de predissociation de la molecule etudiee. Notre contribution a ete d'ameliorer et de moderniser l'equipement existant. Nous avons augmente la resolution spectrale de notre instrument. Nous avons atteint notre principal objectif, a savoir, la possibilite d'acquerir des spectres selon deux modes : par detection du signal synchronisee sur le faisceau laser module en frequence ou par detection du signal directement par comptage. Cette derniere methode est une premiere sur ce type d'instrument et son principal interet a ete d'obtenir une meilleure mesure de l'elargissement de raie. Nous sommes parvenus a mettre clairement en evidence l'elargissement de raie avec la puissance laser en utilisant la methode de detection par comptage direct. La fluorescence induite par

  4. Modelisation frequentielle de la permittivite du beton pour le controle non destructif par georadar

    NASA Astrophysics Data System (ADS)

    Bourdi, Taoufik

    Le georadar (Ground Penetrating Radar (GPR)) constitue une technique de controle non destructif (CND) interessante pour la mesure des epaisseurs des dalles de beton et la caracterisation des fractures, en raison de ses caracteristiques de resolution et de profondeur de penetration. Les equipements georadar sont de plus en plus faciles a utiliser et les logiciels d'interpretation sont en train de devenir plus aisement accessibles. Cependant, il est ressorti dans plusieurs conferences et ateliers sur l'application du georadar en genie civil qu'il fallait poursuivre les recherches, en particulier sur la modelisation et les techniques de mesure des proprietes electriques du beton. En obtenant de meilleures informations sur les proprietes electriques du beton aux frequences du georadar, l'instrumentation et les techniques d'interpretation pourraient etre perfectionnees plus efficacement. Le modele de Jonscher est un modele qui a montre son efficacite dans le domaine geophysique. Pour la premiere fois, son utilisation dans le domaine genie civil est presentee. Dans un premier temps, nous avons valide l'application du modele de Jonscher pour la caracterisation de la permittivite dielectrique du beton. Les resultats ont montre clairement que ce modele est capable de reproduire fidelement la variation de la permittivite de differents types de beton sur la bande de frequence georadar (100 MHz-2 GHz). Dans un deuxieme temps, nous avons montre l'interet du modele de Jonscher en le comparant a d'autres modeles (Debye et Debye-etendu) deja utilises dans le domaine genie civil. Nous avons montre aussi comment le modele de Jonscher peut presenter une aide a la prediction de l'efficacite de blindage et a l'interpretation des ondes de la technique GPR. Il a ete determine que le modele de Jonscher permet de donner une bonne presentation de la variation de la permittivite du beton dans la gamme de frequence georadar consideree. De plus, cette modelisation est valable pour differents

  5. Value of Antiquity in the Restoration Process of the Art Nouveau Villa Duelfer in Barlinek/ Wartość Dawności W Procesie Renowacji Secesyjnej Willi Architekta W Barlinku

    NASA Astrophysics Data System (ADS)

    Rutyna, Halina

    2015-06-01

    The value assigned to time-worn objects and buildings seems crucial to a conservator's theoretical beliefs. The notion of antiquity is almost imprinted in the structure of the building itself, as well as in the concept of the time that has lapsed since the erection of the building. The head of the restoration project of the 1908 art nouveau Villa Duelfer, in Barlinek, which gradually fell into ruin after the war, presents how, in practice, this idea of antiquity was respected in that project. On the hundredth anniversary of the construction of the villa, the building, commonly referred to as the `Pałacyk Cebulowy`, has lived to see its revival by sustaining its primary residential function, its architectural form and its historic values, in an urban context. Kluczowa dla poglądów konserwatora zabytków architektury jawi się idea wartości dawności. Jest ona niejako odciśnięta w strukturze budowli i w wyobrażeniu o czasie, jaki upłynął od chwili powstania. Dobrym przykładem ilustrującym zagadnienie dawności zabytku jest ostatnia renowacja Willi Duelfera w Barlinku, wzniesionej w 1908 roku i potocznie zwanej "Pałacykiem Cebulowym". Po wojnie popadającej w ruinę, W 2008 roku w wyniku konsultacji z konserwatorem zabytków właściciel postanowił przywrócić jej symetrię i dobudować z lewej strony dodatkowe pomieszczenie. Podjęto także rozbudowę wilii od strony zachodniej poprzez dostawienie klatki schodowej i dodanie balkonu opartego na kolumnach na wzór elewacji wschodniej. Dokonano również renowacji zdobień elewacji i odtworzono brakujące elementy od frontu i z tyłu obiektu. Prace przebiegały w szybkim tempie i trwały zaledwie dwa lata, choć budynek był bardzo zniszczony.

  6. Protocol for Communication Networking for Formation Flying

    NASA Technical Reports Server (NTRS)

    Jennings, Esther; Okino, Clayton; Gao, Jay; Clare, Loren

    2009-01-01

    An application-layer protocol and a network architecture have been proposed for data communications among multiple autonomous spacecraft that are required to fly in a precise formation in order to perform scientific observations. The protocol could also be applied to other autonomous vehicles operating in formation, including robotic aircraft, robotic land vehicles, and robotic underwater vehicles. A group of spacecraft or other vehicles to which the protocol applies could be characterized as a precision-formation- flying (PFF) network, and each vehicle could be characterized as a node in the PFF network. In order to support precise formation flying, it would be necessary to establish a corresponding communication network, through which the vehicles could exchange position and orientation data and formation-control commands. The communication network must enable communication during early phases of a mission, when little positional knowledge is available. Particularly during early mission phases, the distances among vehicles may be so large that communication could be achieved only by relaying across multiple links. The large distances and need for omnidirectional coverage would limit communication links to operation at low bandwidth during these mission phases. Once the vehicles were in formation and distances were shorter, the communication network would be required to provide high-bandwidth, low-jitter service to support tight formation-control loops. The proposed protocol and architecture, intended to satisfy the aforementioned and other requirements, are based on a standard layered-reference-model concept. The proposed application protocol would be used in conjunction with conventional network, data-link, and physical-layer protocols. The proposed protocol includes the ubiquitous Institute of Electrical and Electronics Engineers (IEEE) 802.11 medium access control (MAC) protocol to be used in the datalink layer. In addition to its widespread and proven use in

  7. Capteurs monopodes pour mesures accélérométriques

    NASA Astrophysics Data System (ADS)

    Delaite, R.; Valentin, J.-P.

    1993-08-01

    A new design for accelerometric measurements sensors is described. It uses a plate vibrating in thickness shear mode, maintained by the means of a single holder located at the crystal edge. This mounting does cancel the mechanical and thermal stresses which generally modify the sensor output signal. So the ratio signal/noise of a thickness shear accelerometer is improved and the intrinsic sensitivity is multiplied by a factor 40, by comparison with the sensitivity of a thickness shear plate bonded by the means of two opposite holders. Un nouveau dispositif destiné aux mesures d'accélération est présenté. Il met en œuvre une lame vibrant en cisaillement d'épaisseur, fixée à sa structure de maintien par l'intermédiaire d'une unique liaison. Ce montage permet d'éliminer les contraintes mécaniques et thermiques qui perturbent habituellement le signal de mesure, et qui sont liées soit au montage des éléments du capteur, soit aux variations rapides de température qui interviennent lors de la mise en fonctionnement du capteur. Le rapport signal/bruit d'un accéléromètre à lame vibrant en cisaillement d'épaisseur s'en trouve amélioré et la sensibilité à l'accélération est multipliée par un facteur 40, comparée à celle d'un capteur qui serait constitué d'une lame vibrant en cisaillement d'épaisseur, fixée par deux liaisons diamétralement opposées.

  8. WDM network and multicasting protocol strategies.

    PubMed

    Kirci, Pinar; Zaim, Abdul Halim

    2014-01-01

    Optical technology gains extensive attention and ever increasing improvement because of the huge amount of network traffic caused by the growing number of internet users and their rising demands. However, with wavelength division multiplexing (WDM), it is easier to take the advantage of optical networks and optical burst switching (OBS) and to construct WDM networks with low delay rates and better data transparency these technologies are the best choices. Furthermore, multicasting in WDM is an urgent solution for bandwidth-intensive applications. In the paper, a new multicasting protocol with OBS is proposed. The protocol depends on a leaf initiated structure. The network is composed of source, ingress switches, intermediate switches, edge switches, and client nodes. The performance of the protocol is examined with Just Enough Time (JET) and Just In Time (JIT) reservation protocols. Also, the paper involves most of the recent advances about WDM multicasting in optical networks. WDM multicasting in optical networks is given as three common subtitles: Broadcast and-select networks, wavelength-routed networks, and OBS networks. Also, in the paper, multicast routing protocols are briefly summarized and optical burst switched WDM networks are investigated with the proposed multicast schemes.

  9. The Space Communications Protocol Standards Program

    NASA Technical Reports Server (NTRS)

    Jeffries, Alan; Hooke, Adrian J.

    1994-01-01

    In the fall of 1992 NASA and the Department of Defense chartered a technical team to explore the possibility of developing a common set of space data communications standards for potential dual-use across the U.S. national space mission support infrastructure. The team focused on the data communications needs of those activities associated with on-lined control of civil and military aircraft. A two-pronged approach was adopted: a top-down survey of representative civil and military space data communications requirements was conducted; and a bottom-up analysis of available standard data communications protocols was performed. A striking intersection of civil and military space mission requirements emerged, and an equally striking consensus on the approach towards joint civil and military space protocol development was reached. The team concluded that wide segments of the U.S. civil and military space communities have common needs for: (1) an efficient file transfer protocol; (2) various flavors of underlying data transport service; (3) an optional data protection mechanism to assure end-to-end security of message exchange; and (4) an efficient internetworking protocol. These recommendations led to initiating a program to develop a suite of protocols based on these findings. This paper describes the current status of this program.

  10. The Space Communications Protocol Standards Program

    NASA Astrophysics Data System (ADS)

    Jeffries, Alan; Hooke, Adrian J.

    1994-11-01

    In the fall of 1992 NASA and the Department of Defense chartered a technical team to explore the possibility of developing a common set of space data communications standards for potential dual-use across the U.S. national space mission support infrastructure. The team focused on the data communications needs of those activities associated with on-lined control of civil and military aircraft. A two-pronged approach was adopted: a top-down survey of representative civil and military space data communications requirements was conducted; and a bottom-up analysis of available standard data communications protocols was performed. A striking intersection of civil and military space mission requirements emerged, and an equally striking consensus on the approach towards joint civil and military space protocol development was reached. The team concluded that wide segments of the U.S. civil and military space communities have common needs for: (1) an efficient file transfer protocol; (2) various flavors of underlying data transport service; (3) an optional data protection mechanism to assure end-to-end security of message exchange; and (4) an efficient internetworking protocol. These recommendations led to initiating a program to develop a suite of protocols based on these findings. This paper describes the current status of this program.

  11. Processing Protocol for Soil Samples Potentially ...

    EPA Pesticide Factsheets

    Method Operating Procedures This protocol describes the processing steps for 45 g and 9 g soil samples potentially contaminated with Bacillus anthracis spores. The protocol is designed to separate and concentrate the spores from bulk soil down to a pellet that can be used for further analysis. Soil extraction solution and mechanical shaking are used to disrupt soil particle aggregates and to aid in the separation of spores from soil particles. Soil samples are washed twice with soil extraction solution to maximize recovery. Differential centrifugation is used to separate spores from the majority of the soil material. The 45 g protocol has been demonstrated by two laboratories using both loamy and sandy soil types. There were no significant differences overall between the two laboratories for either soil type, suggesting that the processing protocol would be robust enough to use at multiple laboratories while achieving comparable recoveries. The 45 g protocol has demonstrated a matrix limit of detection at 14 spores/gram of soil for loamy and sandy soils.

  12. Standardized North American marsh bird monitoring protocol

    USGS Publications Warehouse

    Conway, Courtney J.

    2011-01-01

    Little is known about the population status of many marsh-dependent birds in North America but recent efforts have focused on collecting more reliable information and estimates of population trends. As part of that effort, a standardized survey protocol was developed in 1999 that provided guidance for conducting marsh bird surveys throughout North America such that data would be consistent among locations. The original survey protocol has been revised to provide greater clarification on many issues as the number of individuals using the protocol has grown. The Standardized North American Marsh Bird Monitoring Protocol instructs surveyors to conduct an initial 5-minute passive point-count survey followed by a series of 1-minute segments during which marsh bird calls are broadcast into the marsh following a standardized approach. Surveyors are instructed to record each individual bird from the suite of 26 focal species that are present in their local area on separate lines of a datasheet and estimate the distance to each bird. Also, surveyors are required to record whether each individual bird was detected within each 1-minute subsegment of the survey. These data allow analysts to use several different approaches for estimating detection probability. The Standardized North American Marsh Bird Monitoring Protocol provides detailed instructions that explain the field methods used to monitor marsh birds in North America.

  13. Instructor Handbook for the Protocol Modules on Classroom Management. Utah Protocol Materials Project.

    ERIC Educational Resources Information Center

    Langer, Philip; Borg, Walter R.

    This handbook is designed to acquaint the teacher educator with the training materials in classroom management prepared by the Utah State University Protocol Training Project. It deals with the protocol materials generally and with each module specifically, and includes the following sections: (a) an introduction to and rationale for protocol…

  14. Approche en soins primaires pour les problèmes de consommation de cannabis

    PubMed Central

    Turner, Suzanne D.; Spithoff, Sheryl; Kahan, Meldon

    2014-01-01

    Résumé Objectif Étudier les caractéristiques et complications cliniques de la consommation à risque de cannabis et du trouble de consommation de cannabis, et présenter un protocole en cabinet pour le dépistage, l’identification et la prise en charge de ces problèmes. Sources des données Une recherche des essais contrôlés, des études d’observation et des révisions sur l’usage de cannabis par les adolescents et les jeunes adultes; les méfaits psychiatriques et médicaux liés au cannabis; le trouble de consommation de cannabis et son traitement; et les lignes directrices sur la consommation à faible risque de cannabis a été effectuée dans PubMed. Message principal Les médecins doivent questionner tous leurs patients quant à leur usage de cannabis. Ils doivent questionner plus souvent les adolescents et jeunes adultes de même que les personnes qui présentent un risque élevé de problèmes liés au cannabis (qui ont un trouble psychiatrique ou de consommation de drogue concomitant). Les problèmes pouvant être causés par le cannabis, comme les troubles de l’humeur, la psychose et les symptômes respiratoires, devraient susciter des questions sur la consommation de cannabis. Aux patients qui rapportent un usage de cannabis, les médecins devraient poser des questions sur la fréquence et la quantité consommée, la présence de symptômes de tolérance ou de sevrage, les tentatives de réduire leur consommation et la présence de problèmes liés au cannabis. Les usagers à faible risque fument, inhalent ou ingèrent le cannabis occasionnellement sans aucun signe de dysfonctionnement scolaire, professionnel ou social; les personnes dont l’usage est problématique consomment tous les jours ou presque tous les jours, ont de la difficulté à réduire leur consommation et leur fonctionnement scolaire, professionnel et social est perturbé. Les médecins devraient offrir à tous les patients dont l’usage est problématique des conseils

  15. Incorporating ethical principles into clinical research protocols: a tool for protocol writers and ethics committees

    PubMed Central

    Li, Rebecca H; Wacholtz, Mary C; Barnes, Mark; Boggs, Liam; Callery-D'Amico, Susan; Davis, Amy; Digilova, Alla; Forster, David; Heffernan, Kate; Luthin, Maeve; Lynch, Holly Fernandez; McNair, Lindsay; Miller, Jennifer E; Murphy, Jacquelyn; Van Campen, Luann; Wilenzick, Mark; Wolf, Delia; Woolston, Cris; Aldinger, Carmen; Bierer, Barbara E

    2016-01-01

    A novel Protocol Ethics Tool Kit (‘Ethics Tool Kit’) has been developed by a multi-stakeholder group of the Multi-Regional Clinical Trials Center of Brigham and Women's Hospital and Harvard. The purpose of the Ethics Tool Kit is to facilitate effective recognition, consideration and deliberation of critical ethical issues in clinical trial protocols. The Ethics Tool Kit may be used by investigators and sponsors to develop a dedicated Ethics Section within a protocol to improve the consistency and transparency between clinical trial protocols and research ethics committee reviews. It may also streamline ethics review and may facilitate and expedite the review process by anticipating the concerns of ethics committee reviewers. Specific attention was given to issues arising in multinational settings. With the use of this Tool Kit, researchers have the opportunity to address critical research ethics issues proactively, potentially speeding the time and easing the process to final protocol approval. PMID:26811365

  16. Incorporating ethical principles into clinical research protocols: a tool for protocol writers and ethics committees.

    PubMed

    Li, Rebecca H; Wacholtz, Mary C; Barnes, Mark; Boggs, Liam; Callery-D'Amico, Susan; Davis, Amy; Digilova, Alla; Forster, David; Heffernan, Kate; Luthin, Maeve; Lynch, Holly Fernandez; McNair, Lindsay; Miller, Jennifer E; Murphy, Jacquelyn; Van Campen, Luann; Wilenzick, Mark; Wolf, Delia; Woolston, Cris; Aldinger, Carmen; Bierer, Barbara E

    2016-04-01

    A novel Protocol Ethics Tool Kit ('Ethics Tool Kit') has been developed by a multi-stakeholder group of the Multi-Regional Clinical Trials Center of Brigham and Women's Hospital and Harvard. The purpose of the Ethics Tool Kit is to facilitate effective recognition, consideration and deliberation of critical ethical issues in clinical trial protocols. The Ethics Tool Kit may be used by investigators and sponsors to develop a dedicated Ethics Section within a protocol to improve the consistency and transparency between clinical trial protocols and research ethics committee reviews. It may also streamline ethics review and may facilitate and expedite the review process by anticipating the concerns of ethics committee reviewers. Specific attention was given to issues arising in multinational settings. With the use of this Tool Kit, researchers have the opportunity to address critical research ethics issues proactively, potentially speeding the time and easing the process to final protocol approval.

  17. Chapter 15: Commercial New Construction Protocol

    SciTech Connect

    Keates, S.

    2014-09-01

    This protocol is intended to describe the recommended method when evaluating the whole-building performance of new construction projects in the commercial sector. The protocol focuses on energy conservation measures (ECMs) measures (or packages of measures) where evaluators can best analyze impacts using building simulation. These ECMs typically require the use of calibrated building simulations under Option D of the International Performance Measurement and Verification Protocol. Examples of such measures include Leadership in Energy and Environmental Design building certification, novel and/or efficient heating, ventilation, and air conditioning system designs, and extensive building controls systems. In general, it is best to evaluate any ECM (or set of measures) expected to significantly interact with other systems within the building and with savings sensitive to seasonal variations in weather.

  18. Network protocols for real-time applications

    NASA Technical Reports Server (NTRS)

    Johnson, Marjory J.

    1987-01-01

    The Fiber Distributed Data Interface (FDDI) and the SAE AE-9B High Speed Ring Bus (HSRB) are emerging standards for high-performance token ring local area networks. FDDI was designed to be a general-purpose high-performance network. HSRB was designed specifically for military real-time applications. A workshop was conducted at NASA Ames Research Center in January, 1987 to compare and contrast these protocols with respect to their ability to support real-time applications. This report summarizes workshop presentations and includes an independent comparison of the two protocols. A conclusion reached at the workshop was that current protocols for the upper layers of the Open Systems Interconnection (OSI) network model are inadequate for real-time applications.

  19. Protocol for emergency EPR dosimetry in fingernails.

    PubMed

    Trompier, F; Kornak, L; Calas, C; Romanyukha, A; Leblanc, B; Mitchell, C A; Swartz, H M; Clairand, I

    2007-08-01

    There is an increased need for after-the-fact dosimetry because of the high risk of radiation exposures due to terrorism or accidents. In case of such an event, a method is needed to make measurements of dose in a large number of individuals rapidly and with sufficient accuracy to facilitate effective medical triage. Dosimetry based on EPR measurements of fingernails potentially could be an effective tool for this purpose. This paper presents the first operational protocols for EPR fingernail dosimetry, including guidelines for collection and storage of samples, parameters for EPR measurements, and the method of dose assessment. In a blinded test of this protocol application was carried out on nails freshly sampled and irradiated to 4 and 20 Gy; this protocol gave dose estimates with an error of less than 30%.

  20. Chapter 22: Compressed Air Evaluation Protocol

    SciTech Connect

    Benton, N.

    2014-11-01

    Compressed-air systems are used widely throughout industry for many operations, including pneumatic tools, packaging and automation equipment, conveyors, and other industrial process operations. Compressed-air systems are defined as a group of subsystems composed of air compressors, air treatment equipment, controls, piping, pneumatic tools, pneumatically powered machinery, and process applications using compressed air. A compressed-air system has three primary functional subsystems: supply, distribution, and demand. Air compressors are the primary energy consumers in a compressed-air system and are the primary focus of this protocol. The two compressed-air energy efficiency measures specifically addressed in this protocol are: high-efficiency/variable speed drive (VSD) compressor replacing modulating compressor; compressed-air leak survey and repairs. This protocol provides direction on how to reliably verify savings from these two measures using a consistent approach for each.

  1. Objective and automated protocols for the evaluation of biomedical search engines using No Title Evaluation protocols

    PubMed Central

    Campagne, Fabien

    2008-01-01

    Background The evaluation of information retrieval techniques has traditionally relied on human judges to determine which documents are relevant to a query and which are not. This protocol is used in the Text Retrieval Evaluation Conference (TREC), organized annually for the past 15 years, to support the unbiased evaluation of novel information retrieval approaches. The TREC Genomics Track has recently been introduced to measure the performance of information retrieval for biomedical applications. Results We describe two protocols for evaluating biomedical information retrieval techniques without human relevance judgments. We call these protocols No Title Evaluation (NT Evaluation). The first protocol measures performance for focused searches, where only one relevant document exists for each query. The second protocol measures performance for queries expected to have potentially many relevant documents per query (high-recall searches). Both protocols take advantage of the clear separation of titles and abstracts found in Medline. We compare the performance obtained with these evaluation protocols to results obtained by reusing the relevance judgments produced in the 2004 and 2005 TREC Genomics Track and observe significant correlations between performance rankings generated by our approach and TREC. Spearman's correlation coefficients in the range of 0.79–0.92 are observed comparing bpref measured with NT Evaluation or with TREC evaluations. For comparison, coefficients in the range 0.86–0.94 can be observed when evaluating the same set of methods with data from two independent TREC Genomics Track evaluations. We discuss the advantages of NT Evaluation over the TRels and the data fusion evaluation protocols introduced recently. Conclusion Our results suggest that the NT Evaluation protocols described here could be used to optimize some search engine parameters before human evaluation. Further research is needed to determine if NT Evaluation or variants of these

  2. Comparison of a kayaking ergometer protocol with an arm crank protocol for evaluating peak oxygen consumption.

    PubMed

    Forbes, Scott C; Chilibeck, Philip D

    2007-11-01

    The purpose of this study was to compare a kayak ergometer protocol with an arm crank protocol for determining peak oxygen consumption (V(.-)O2). On separate days in random order, 10 men and 5 women (16-24 years old) with kayaking experience completed the kayak ergometer protocol and a standardized arm crank protocol. The kayak protocol began at 70 strokes per minute and increased by 10 strokes per minute every 2 minutes until volitional fatigue. The arm crank protocol consisted of a crank rate of 70 revolutions per minute, initial loading of 35 W and subsequent increases of 35 W every 2 minutes until volitional fatigue. The results showed a significant difference (p < 0.01) between the kayak ergometer and the arm crank protocols for relative peak V(.-)O2 (47.5 +/- 3.9 ml x kg(-1) x min(-1) vs. 44.2 +/- 6.2 ml x kg(-1) x min(-1)) and absolute peak V(.-)O2 (3.38 L x min(-1) +/- 0.53 vs. 3.14 +/- 0.64 L x min(-1)). The correlation between kayak and arm crank protocol was 0.79 and 0.90, for relative and absolute V(.-)O2 peak, respectively (both p < 0.01). The higher peak V(.-)O2 on the kayak ergometer may be due to the greater muscle mass involved compared to the arm crank ergometer. The kayak ergometer protocol may therefore be more specific to the sport of kayaking than an arm crank protocol.

  3. A Protocol for Evaluating Contextual Design Principles

    PubMed Central

    Stamps, Arthur

    2014-01-01

    This paper explains how scientific data can be incorporated into urban design decisions, such as evaluating contextual design principles. The recommended protocols are based on the Cochrane Reviews that have been widely used in medical research. The major concepts of a Cochrane Review are explained, as well as the underlying mathematics. The underlying math is meta-analysis. Data are reported for three applications and seven contextual design policies. It is suggested that use of the Cochrane protocols will be of great assistance to planners by providing scientific data that can be used to evaluate the efficacies of contextual design policies prior to implementing those policies. PMID:25431448

  4. Building multiservice Internet protocol virtual private networks

    NASA Astrophysics Data System (ADS)

    Cheung, William

    1999-11-01

    Multiservice Internet Protocol-based Virtual Private Networks (MIP- VPNs) with Quality of Service (QoS) are becoming a reality due to the availability of new standards from the Internet Engineering Task Force (IETF). This paper describes how components including security models, IP tunneling protocols, and service differentiation schemes fit together in order to construct such a VPN. First, the concept and rationale of VPN is presented, followed by a discussion of its supporting components. A comparison is made among the various VPN technologies.

  5. Optimal protocols for slowly driven quantum systems

    NASA Astrophysics Data System (ADS)

    Zulkowski, Patrick R.; DeWeese, Michael R.

    2015-09-01

    The design of efficient quantum information processing will rely on optimal nonequilibrium transitions of driven quantum systems. Building on a recently developed geometric framework for computing optimal protocols for classical systems driven in finite time, we construct a general framework for optimizing the average information entropy for driven quantum systems. Geodesics on the parameter manifold endowed with a positive semidefinite metric correspond to protocols that minimize the average information entropy production in finite time. We use this framework to explicitly compute the optimal entropy production for a simple two-state quantum system coupled to a heat bath of bosonic oscillators, which has applications to quantum annealing.

  6. A molecular protocol for diagnosing myotonic dystrophy.

    PubMed

    Guida, M; Marger, R S; Papp, A C; Snyder, P J; Sedra, M S; Kissel, J T; Mendell, J R; Prior, T W

    1995-01-01

    Myotonic dystrophy (DM) is an autosomal dominant genetic disease caused by an unstable CTG repeat sequence in the 3' untranslated region of the myotonin protein kinase gene. The CTG repeat is present 5-30 times in the normal population, whereas DM patients have CTG expansions of 50 to several thousand repeats. The age of onset of the disorder and the severity of the phenotype is roughly correlated with the size of the CTG expansion. We developed a molecular protocol for the diagnosis of DM based on an initial polymerase chain reaction screen to detect normal-sized alleles and small expansions, followed by an improved Southern protocol to detect larger expansions.

  7. Cryptanalysis of the Quantum Group Signature Protocols

    NASA Astrophysics Data System (ADS)

    Zhang, Ke-Jia; Sun, Ying; Song, Ting-Ting; Zuo, Hui-Juan

    2013-11-01

    Recently, the researches of quantum group signature (QGS) have attracted a lot of attentions and some typical protocols have been designed for e-payment system, e-government, e-business, etc. In this paper, we analyze the security of the quantum group signature with the example of two novel protocols. It can be seen that both of them cannot be implemented securely since the arbitrator cannot solve the disputes fairly. In order to show that, some possible attack strategies, which can be used by the malicious participants, are proposed. Moreover, the further discussions of QGS are presented finally, including some insecurity factors and improved ideas.

  8. On Alarm Protocol in Wireless Sensor Networks

    NASA Astrophysics Data System (ADS)

    Cichoń, Jacek; Kapelko, Rafał; Lemiesz, Jakub; Zawada, Marcin

    We consider the problem of efficient alarm protocol for ad-hoc radio networks consisting of devices that try to gain access for transmission through a shared radio communication channel. The problem arise in tasks that sensors have to quickly inform the target user about an alert situation such as presence of fire, dangerous radiation, seismic vibrations, and more. In this paper, we present a protocol which uses O(logn) time slots and show that Ω(logn/loglogn) is a lower bound for used time slots.

  9. The covert channel over HTTP protocol

    NASA Astrophysics Data System (ADS)

    Graniszewski, Waldemar; Krupski, Jacek; Szczypiorski, Krzysztof

    2016-09-01

    The paper presents a new steganographic method - the covert channel is created over HTTP protocol header, i.e. trailer field. HTTP protocol is one of the most frequently used in the Internet. The popularity of the Web servers and network traffic from, and to them, is one of the requirements for undetectable message exchange. To study this kind of the information hiding technique an application in Javascript language based on the Node.js framework was written. The results of the experiment that was performed to send a message in the covert channel are also presented.

  10. The Kyoto Protocol: A business perspective

    SciTech Connect

    Malin, C.B.

    1998-01-19

    Governments have made a tentative start in responding to climate change. In marathon negotiating sessions that extended into an extra day Dec. 1--11 in Kyoto, Japan, representatives from more than 160 governments hammered out the Kyoto Protocol to the United Nations Framework Convention on Climate Change (FCCC). The protocol calls for developed countries to reduce emissions of greenhouse gases (GHGs) on averaged by 5.2% below 1990 levels by the years 2008--2012. Developing countries have no new obligations. The paper discusses the agreement, ratification, future questions, business role, and the challenge.

  11. Point-to-Point Multicast Communications Protocol

    NASA Technical Reports Server (NTRS)

    Byrd, Gregory T.; Nakano, Russell; Delagi, Bruce A.

    1987-01-01

    This paper describes a protocol to support point-to-point interprocessor communications with multicast. Dynamic, cut-through routing with local flow control is used to provide a high-throughput, low-latency communications path between processors. In addition multicast transmissions are available, in which copies of a packet are sent to multiple destinations using common resources as much as possible. Special packet terminators and selective buffering are introduced to avoid a deadlock during multicasts. A simulated implementation of the protocol is also described.

  12. Quantum Private Comparison Protocol with Linear Optics

    NASA Astrophysics Data System (ADS)

    Luo, Qing-bin; Yang, Guo-wu; She, Kun; Li, Xiaoyu

    2016-12-01

    In this paper, we propose an innovative quantum private comparison(QPC) protocol based on partial Bell-state measurement from the view of linear optics, which enabling two parties to compare the equality of their private information with the help of a semi-honest third party. Partial Bell-state measurement has been realized by using only linear optical elements in experimental measurement-device-independent quantum key distribution(MDI-QKD) schemes, which makes us believe that our protocol can be realized in the near future. The security analysis shows that the participants will not leak their private information.

  13. Development of a complex type of pour point-viscosity depressant and infrared spectrum research

    SciTech Connect

    Zhang Fusheng; Wang Biao

    1995-11-01

    EMS, a complex type of pour point-viscosity depressant for crudes, is composed of EVA, MVA [molecular structure shown for both in the paper] and Surfactant. After adding EMS into the crudes, a very nice result in reducing pour point and viscosity for Daqing, Jianghan and Jidong crudes was obtained. From the research result of infrared spectroscopy of the interactions between EMS or its components and wax or mixture of resin and asphaltene isolated from three crudes, it has been shown that the area ratio of the double absorption peaks of 719 cm{sup {minus}1} and 729 cm{sup {minus}1} or 1,368 cm{sup {minus}1} and 1,378 cm{sup {minus}1} changed remarkably after EMS or its components were added into wax. It can be inferred that the cocrystallization probably happened between the EMS or its components and the wax. The position of the 4,000--3,000 cm{sup {minus}1} infrared absorption peak of the mixture of resin and asphaltene moved to the lower wavenumber, and the ratio of the area of 1,373 cm{sup {minus}1} absorption peak (methyl) to the combination area of 748, 810 and 871 cm{sup {minus}1} absorption peak (aromatics) increased remarkably. It can be inferred that the pour point-viscosity depressant molecules destroyed the original hydrogen bonds and overlapping of the aromatic ring planes among resin and asphaltene molecules to form a new cubic molecular structure and new hydrogen bonds with the results the viscosity of crude oil will be reduced.

  14. Plasma Sprayed Pour Tubes and Other Melt Handling Components for Use in Gas Atomization

    SciTech Connect

    Byrd, David; Rieken, Joel; Heidloff, Andy; Besser, Matthew; Anderson, Iver

    2011-04-01

    Ames Laboratory has successfully used plasma sprayed ceramic components made from yttria stabilized zirconia as melt pouring tubes for gas atomization for many years. These tubes have proven to be strong, thermal shock resistant and versatile. Various configurations are possible both internally and externally. Accurate dimensions are achieved internally with a machined fugitive graphite mandrel and externally by diamond grinding. The previous study of the effect of spray parameters on density was extended to determine the effect of the resulting density on the thermal shock characteristics on down-quenching and up-quenching. Encouraging results also prompted investigation of the use of plasma spraying as a method to construct a melt pour exit stopper that is mechanically robust, thermal shock resistant, and not susceptible to attack by reactive melt additions. The Ames Laboratory operates two close-coupled high pressure gas atomizers. These two atomizers are designed to produce fine and coarse spherical metal powders (5{mu} to 500{mu} diameter) of many different metals and alloys. The systems vary in size, but generally the smaller atomizer can produce up to 5 kg of powder whereas the larger can produce up to 25 kg depending on the charge form and density. In order to make powders of such varying compositions, it is necessary to have melt systems capable of heating and containing the liquid charge to the desired superheat temperature prior to pouring through the atomization nozzle. For some metals and alloys this is not a problem; however for some more reactive and/or high melting materials this can pose unique challenges. Figure 1 is a schematic that illustrates the atomization system and its components.

  15. Evaluation de l'intergiciel de communication DDS pour son utilisation dans le domaine avionique

    NASA Astrophysics Data System (ADS)

    Levesque-Landry, Kevin

    Les aeronefs modernes doivent combler de plus en plus de fonctionnalites afin de satisfaire les besoins de la clientele. De ce fait, les besoins en communications des systemes avioniques sont grandissants. De plus, la portabilite et la reutilisabilite des applications sont des defis d'actualite dans le domaine avionique. De ce fait, ce projet de recherche vise a faire une evaluation de la technologie d'intergiciel de service de distribution de donnees (DDS) pour son utilisation dans le domaine avionique. Cette technologie permettrait de reduire la complexite des communications et faciliter la portabilite et reutilisabilite des applications grâce a son interface standardisee. Dans ce projet de recherche, la norme DDS est tout d'abord etudiee pour cibler les fonctionnalites qui sont utiles au domaine avionique. Les differentes polices de qualite de services sont ainsi etudiees et denotent la flexibilite de la technologie DDS. Un intergiciel DDS est egalement evalue dans un environnement de laboratoire afin de mesurer l'impact de l'utilisation de cette technologie sur les performances de latence ainsi que sur l'utilisation de la bande passante. Les resultats montrent une faible augmentation de la latence moyenne lorsque l'intergiciel DDS est utilise. L'intergiciel DDS est egalement utilise dans une etude de cas avec un AFCS (automatic flight control system) afin de quantifier les effets de son utilisation sur une application avionique. Les resultats montrent que l'utilisation de l'intergiciel DDS n'empeche pas l'AFCS d'atteindre la stabilite, mais qu'elle ralentit l'atteinte de cette derniere. Finalement, une etude de cas est effectuee afin de valider que la technologie DDS peut etre utilisee pour construire des systemes redondants. Les resultats montrent que l'intergiciel DDS permet de faire de la redondance de reserve sans avoir un impact visible sur les performances du systeme redondant.

  16. Interpolation of recurrence and hashing entanglement distillation protocols

    SciTech Connect

    Vollbrecht, Karl Gerd H.; Verstraete, Frank

    2005-06-15

    We construct interesting entanglement distillation protocols by interpolating between the recurrence and hashing protocols. This leads to asymptotic two-way distillation protocols, resulting in an improvement of the distillation rate for all mixed Bell diagonal entangled states, even for the ones with very high fidelity. We also present a method for how entanglement-assisted distillation protocol can be converted into nonentanglement-assisted protocols with the same yield.

  17. Insecticide and Repellent Mixture Pour-On Protects Cattle against Animal Trypanosomosis

    PubMed Central

    Abdoulmoumini, Mamoudou; Zoli, Andre; Cene, Bylah; Adakal, Hassane; Bouyer, Jérémy

    2016-01-01

    Background African animal trypanosomosis (AAT), transmitted by tsetse flies and tick-borne diseases are the main constraints to livestock production in sub-Saharan Africa. Vector control methods such as pour-on offer individual protection against ticks but not against tsetse so far, for which protection has always been communal, through a reduction of their density. The latter requires the treatment of a large part of the herd in a given landscape and is not instantaneous. Methodology/Principal Findings Two prospective surveys were conducted to evaluate the efficacy and persistence of a pour-on formulation composed of cypermetrhin, chlorpyrifos, piperonyl butoxid and citronella (Vectoclor, CEVA Santé Animal). In experimental conditions, tsetse flies were exposed to treated and control cattle. Flies knockdown and engorgement rates were determined and the product persistence was assessed as the time for these parameters to drop below 50% (T50). T50 was 37 days (95%CI: [33–41] days) and 46 days (95%CI: [39–56] days) for the knockdown and engorgement rates respectively. In field conditions, two cattle herds were monitored following a case-control experimental design, in the Adamaoua region of Cameroon. One herd was treated once with Vectoclor pour-on (treated group) and the second used as a control group (not treated). Ticks infestation rate, trypanosomosis prevalence and packed-cell volume were measured over the two months following treatment. The treatment was highly effective against ticks with a complete elimination three days after application in the treated group. Trypanosomosis prevalence was also significantly reduced during the study (by 4, P<0.001) and PCV of the treated group increased significantly in the same time (P<0.001), contrary to the control group. Conclusions/Significance The protection of this new pour-on against tsetse bites and trypanosomosis is demonstrated here for the first time. Moreover, this insecticide and repellent mixture offer a

  18. Explorer : des clés pour mieux comprendre la matière

    ScienceCinema

    None

    2016-07-12

    Le LHC va-t-il bouleverser les théories de l'infiniment petit ? Les physiciens aimeraient que l'accélérateur fasse trembler le modèle standard. Cette théorie des particules élémentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expériences ont été conçus pour les éclairer.

  19. High Speed Transport Protocols: An Attempt to Find the Best Solution

    DTIC Science & Technology

    1994-03-01

    19 4. Internet Control Message Protocol (ICMP) ............................. 19 5. Internet Group Management Protocol ( IGMP ...specific tasks, as IGMP and ARP (TABLE 1). Later, in this section, each of these protocols will be explained in more detail. In addition to the basic... IGMP Internet Group Management Protocol ARP Address Resolution Protocol 1. Internet Protocol (IP) Internet Protocol is one of the two major protocols

  20. Reengineering Archival Access through the OAI Protocols.

    ERIC Educational Resources Information Center

    Prom, Christopher J.

    2003-01-01

    The Open Archives Initiative (OAI) Protocol for Metadata Harvesting program presents a method by which metadata regarding archives and manuscripts can be shared and made more interoperable with metadata from other sources. Outlines a method for exposing hierarchical metadata from encoded archival description (EAD) files and assesses some…

  1. Reliable multicasting in the Xpress Transport Protocol

    SciTech Connect

    Atwood, J.W.; Catrina, O.; Fenton, J.; Strayer, W.T.

    1996-12-01

    The Xpress Transport Protocol (XTP) is designed to meet the needs of distributed, real-time, and multimedia systems. This paper describes the genesis of recent improvements to XTP that provide mechanisms for reliable management of multicast groups, and gives details of the mechanisms used.

  2. The Vocational Assessment Protocol: Development and Validation.

    ERIC Educational Resources Information Center

    Thomas, Dale F.; Menz, Fredrick E.

    This report describes a 48-month project which developed, field tested, and evaluated the utility of the Vocational Assessment Protocol (VAP) for use with persons with traumatic brain injury resulting in a severe and persistent disability. The VAP is intended to assist in the community-based vocational rehabilitation of these individuals. The VAP…

  3. An acid-catalyzed macrolactonization protocol.

    PubMed

    Trost, Barry M; Chisholm, John D

    2002-10-17

    [reaction: see text] An efficient macrolactonization protocol devoid of any base was developed derived from the use of vinyl esters in transesterification. Subjecting a hydroxy acid and ethoxyacetylene to 2 mol % [RuCl(2)(p-cymene)](2) in toluene followed by addition of camphorsulfonic acid or inverse addition provided macrolactones in good yields.

  4. 21 CFR 58.120 - Protocol.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL GOOD LABORATORY PRACTICE... for acceptable levels of contaminants that are reasonably expected to be present in the dietary... methods to be used. (b) All changes in or revisions of an approved protocol and the reasons...

  5. British Columbia/Alberta Transfer System Protocol

    ERIC Educational Resources Information Center

    British Columbia Council on Admissions and Transfer, 2007

    2007-01-01

    The purpose of this agreement is to provide assurance to students that they will receive transfer credit for courses or programs they have successfully completed where the content/outcomes are demonstrably equivalent to those offered at the institution to which they transfer. This protocol is undertaken by the British Columbia Council on…

  6. 21 CFR 312.30 - Protocol amendments.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 5 2010-04-01 2010-04-01 false Protocol amendments. 312.30 Section 312.30 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS FOR HUMAN USE INVESTIGATIONAL NEW DRUG APPLICATION Investigational New Drug Application (IND) §...

  7. A comprehensive protocol to test instrumented treadmills.

    PubMed

    Sloot, L H; Houdijk, H; Harlaar, J

    2015-06-01

    Instrumented treadmills are becoming more common in gait analysis. Due to their large and compliant structure, errors in force measurements are expected to be higher compared with conventional force plates. There is, however, no consistency in the literature on testing the performance of these treadmills. Therefore, we propose a standard protocol to assess and report error sources in instrumented treadmills. The first part of this protocol consists of assessment of the accuracy of forces and center of pressure (COP), including non-linearity, hysteresis and crosstalk. The second part consists of (novel) instrumented resonance testing and belt speed variability tests. The third part focuses on measurement variability over time, including drift, warming of the system and noise. The performance of two in-house instrumented treadmills with different dynamics was measured. Differences were found between the treadmills in COP accuracy (4.0 mm versus 6.5 mm), lowest eigen frequency (35 Hz versus 23 Hz) and noise level at 5 km/h (10 N versus 29 N). The loaded treadmills both showed a 3.3% belt speed variability at 5 km/h. Thus, the protocol was able to characterize strong and weak characteristics of the treadmills and allowed for a proper judgement on the validity of the instruments and their application in the domain of gait analysis. We propose to use this protocol when testing and reporting the performance of instrumented treadmills.

  8. Preparing Protocols for Institutional Review Boards.

    ERIC Educational Resources Information Center

    Lyons, Charles M.

    1983-01-01

    Introduces the process by which Institutional Review Boards (IRBs) review proposals for research involving human subjects. Describes the composition of IRBs. Presents the Nuremberg code, the elements of informed consent, the judging criteria for proposals, and a sample protocol format. References newly published regulations governing research with…

  9. 2017 EPA Protocol Gas Verification Program Participants

    EPA Pesticide Factsheets

    A list of participants for 2016 EPA's Protocol Gas Verification Program (PGVP) for stationary source monitoring. The list also has vendor IDs, which are production site-specific, and are the same ones used in the PGVP for ambient air monitoring.

  10. Formal Requirements for Key Distribution Protocols

    DTIC Science & Technology

    1994-01-01

    the agent of the action, where a round number local to a principal identi es all actions pertaining to a single session as far as that principal is...be used for more than the length of a single session these protocols provide reauthentication with fewer messages than the number required for initial

  11. A Geographical Heuristic Routing Protocol for VANETs

    PubMed Central

    Urquiza-Aguiar, Luis; Tripp-Barba, Carolina; Aguilar Igartua, Mónica

    2016-01-01

    Vehicular ad hoc networks (VANETs) leverage the communication system of Intelligent Transportation Systems (ITS). Recently, Delay-Tolerant Network (DTN) routing protocols have increased their popularity among the research community for being used in non-safety VANET applications and services like traffic reporting. Vehicular DTN protocols use geographical and local information to make forwarding decisions. However, current proposals only consider the selection of the best candidate based on a local-search. In this paper, we propose a generic Geographical Heuristic Routing (GHR) protocol that can be applied to any DTN geographical routing protocol that makes forwarding decisions hop by hop. GHR includes in its operation adaptations simulated annealing and Tabu-search meta-heuristics, which have largely been used to improve local-search results in discrete optimization. We include a complete performance evaluation of GHR in a multi-hop VANET simulation scenario for a reporting service. Our study analyzes all of the meaningful configurations of GHR and offers a statistical analysis of our findings by means of MANOVA tests. Our results indicate that the use of a Tabu list contributes to improving the packet delivery ratio by around 5% to 10%. Moreover, if Tabu is used, then the simulated annealing routing strategy gets a better performance than the selection of the best node used with carry and forwarding (default operation). PMID:27669254

  12. Plant Fungal Pathogens: Methods and Protocols

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Over the course of evolution, fungi have adapted to occupy specific niches, from symbiotically inhabiting the flora of the intestinal tract of mammals to saprophytic growth on leaf litter resting on the forest floor. In plant Fungal Pathogens: Methods and Protocols, expert researchers in the field ...

  13. Leaf tissue sampling and DNA extraction protocols.

    PubMed

    Semagn, Kassa

    2014-01-01

    Taxonomists must be familiar with a number of issues in collecting and transporting samples using freezing methods (liquid nitrogen and dry ice), desiccants (silica gel and blotter paper), and preservatives (CTAB, ethanol, and isopropanol), with each method having its own merits and limitations. For most molecular studies, a reasonably good quality and quantity of DNA is required, which can only be obtained using standard DNA extraction protocols. There are many DNA extraction protocols that vary from simple and quick ones that yield low-quality DNA but good enough for routine analyses to the laborious and time-consuming standard methods that usually produce high quality and quantities of DNA. The protocol to be chosen will depend on the quality and quantity of DNA needed, the nature of samples, and the presence of natural substances that may interfere with the extraction and subsequent analysis. The protocol described in this chapter has been tested for extracting DNA from eight species and provided very good quality and quantity of DNA for different applications, including those genotyping methods that use restriction enzymes.

  14. 21 CFR 312.83 - Treatment protocols.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 5 2013-04-01 2013-04-01 false Treatment protocols. 312.83 Section 312.83 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS FOR HUMAN USE INVESTIGATIONAL NEW DRUG APPLICATION Drugs Intended to Treat Life-threatening and...

  15. Domain Name Server Security (DNSSEC) Protocol Deployment

    DTIC Science & Technology

    2014-10-01

    PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE ( DD -MM-YYYY) OCT 2014 2. REPORT TYPE FINAL TECHNICAL REPORT 3. DATES COVERED...Transfer Protocol SOHO Small-Office/Home Office SPF Sender Policy Framework SSL Secure Sockets Layer APPROVED FOR PUBLIC RELEASE; DISTRIBUTION

  16. Verbal Protocol Patterns of College Dormitory Counselors

    ERIC Educational Resources Information Center

    Bozarth, J.; And Others

    1970-01-01

    This study examines the degree of relationship of certain verbal protocol patterns of college resident counselors to the variables of Accurate Empathy and Warmth (Truax and Carkhuff). Findings suggest that more reflective, nonjudgmental counselors were rated as providing a better counseling relationship when the measures of the relationship were…

  17. Unlinkable Serial Transactions: Protocols and Applications

    DTIC Science & Technology

    1999-11-01

    Verification Additional Key Words and Phrases: Anonymity , blinding, cryptographic protocols, unlinkable serial transactions A preliminary version of...typically one for each vendor [Chaum 1981]. Customers maintain anonymity by conducting transactions using anonymous elec- tronic cash (e-cash). But...vendors are able to protect their interests by maintaining a profile on each anonymous customer. In this paper we present, effectively, the opposite

  18. Clean Quantum and Classical Communication Protocols

    NASA Astrophysics Data System (ADS)

    Buhrman, Harry; Christandl, Matthias; Perry, Christopher; Zuiddam, Jeroen

    2016-12-01

    By how much must the communication complexity of a function increase if we demand that the parties not only correctly compute the function but also return all registers (other than the one containing the answer) to their initial states at the end of the communication protocol? Protocols that achieve this are referred to as clean and the associated cost as the clean communication complexity. Here we present clean protocols for calculating the inner product of two n -bit strings, showing that (in the absence of preshared entanglement) at most n +3 qubits or n +O (√{n }) bits of communication are required. The quantum protocol provides inspiration for obtaining the optimal method to implement distributed cnot gates in parallel while minimizing the amount of quantum communication. For more general functions, we show that nearly all Boolean functions require close to 2 n bits of classical communication to compute and close to n qubits if the parties have access to preshared entanglement. Both of these values are maximal for their respective paradigms.

  19. A Geographical Heuristic Routing Protocol for VANETs.

    PubMed

    Urquiza-Aguiar, Luis; Tripp-Barba, Carolina; Aguilar Igartua, Mónica

    2016-09-23

    Vehicular ad hoc networks (VANETs) leverage the communication system of Intelligent Transportation Systems (ITS). Recently, Delay-Tolerant Network (DTN) routing protocols have increased their popularity among the research community for being used in non-safety VANET applications and services like traffic reporting. Vehicular DTN protocols use geographical and local information to make forwarding decisions. However, current proposals only consider the selection of the best candidate based on a local-search. In this paper, we propose a generic Geographical Heuristic Routing (GHR) protocol that can be applied to any DTN geographical routing protocol that makes forwarding decisions hop by hop. GHR includes in its operation adaptations simulated annealing and Tabu-search meta-heuristics, which have largely been used to improve local-search results in discrete optimization. We include a complete performance evaluation of GHR in a multi-hop VANET simulation scenario for a reporting service. Our study analyzes all of the meaningful configurations of GHR and offers a statistical analysis of our findings by means of MANOVA tests. Our results indicate that the use of a Tabu list contributes to improving the packet delivery ratio by around 5% to 10%. Moreover, if Tabu is used, then the simulated annealing routing strategy gets a better performance than the selection of the best node used with carry and forwarding (default operation).

  20. Teledermatology protocol for screening of Skin Cancer*

    PubMed Central

    Piccoli, Maria Fernanda; Amorim, Bruna Dücker Bastos; Wagner, Harley Miguel; Nunes, Daniel Holthausen

    2015-01-01

    BACKGROUND Telemedicine refers to the use of technology as improvement of healthcare delivery to places where distance becomes an obstacle. Its use represents a great potential for dermatology, a specialty whose visual analysis phase is essential in diagnosis. OBJECTIVES To analyze the compatibility index of skin cancer diagnoses between primary care and teledermatology, and to validate a protocol for standardization of digital imaging to obtain the reports in teledermatology. METHODS An observational cross-sectional study developed through the census of 333 examination requests, received between January/2012 and July/2012, in the Center for Telemedicine and Telehealth of SES-SC. We used a protocol for photographic lesion standardization, consisting of three steps (panoramic photo, close-up with ruler and dermoscopy). After collection, the data were sent to a virtual site on the Internet, and recorded with the use of an electronic health record containing the images, the skin phototype and demographic characteristics. RESULTS The level of compatibility between the diagnosis of skin cancer in Santa Catarina's primary care and the diagnosis proposed by teledermatology was 19.02%. Proportionally, it was 21.21% for BCC, 44.44% for SCC and 6.98% for MM. The protocol was statistically significant (p <0.05), with an OR of 38.77. CONCLUSION The rate of diagnostic compatibility of skin cancer was low and the use of the protocol optimized the chance of validating requests for examination. PMID:25830990

  1. 50 CFR 600.757 - Operational protocols.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 12 2013-10-01 2013-10-01 false Operational protocols. 600.757 Section 600.757 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MAGNUSON-STEVENS ACT PROVISIONS Fishery Negotiation Panels §...

  2. Student Performances in Various Learning Protocols

    ERIC Educational Resources Information Center

    Gregorius, Roberto

    2011-01-01

    A comparison was made between students' overall performance, as measured by overall grade, in different teaching and learning protocols: (1) traditional textbook and lecture along with standard examinations; (2) lectures with online augmentation and PowerPoint lecture notes along with standard examinations; (3) similar to "(2)" but with…

  3. Benefits of Computer Assisted Translation to Information Managers and End-Users (L’Interet de la Traduction Assistee par Ordinateur Pour les Responsables de Centres d’Information et Pour Les Utilisateurs Finaux)

    DTIC Science & Technology

    1990-06-01

    couramment en anglais, tine analyse purement utitisis, lermetlant tinc utiLisation - grammaticale L’aisse subsister ban nombre interactive avec tine...l’indust’riaLisation pour de texte et autres outits Linguistiques se placer dans tin environne ment utiLises pour La TAO scront de toute facon op eritiannet...Llindexation automatique des textes en angtala ou en fran~ais, Ainsi Le texte-peut provenir d’une bande L’aLimentation automatique d’une base de magnetique

  4. Nouvelle stratégie pour l'amélioration de la brillance d'une source VUV nanoseconde

    NASA Astrophysics Data System (ADS)

    Chénais, S.; Castex, M.-C.

    2006-10-01

    Nous présentons une technique simple pour améliorer d'un à deux ordres de grandeur l'énergie d'un rayonnement cohérent à 125 nm, obtenu par somme de fréquence résonante dans une vapeur de mercure à température ambiante. En focalisant sur la surface de mercure un laser ArF à 193 nm, le signal VUV est multiplié par 6, facteur qui peut s'élever jusqu'à ˜ 60 lorsque l'intensité des faisceaux fondamentaux est réduite. Cette expérience de validation ouvre de nombreuses opportunités d'amélioration pour une source VUV de forte brillance, applicable à la nanostructuration de matériaux pour l'optique.

  5. Protocol for determining bull trout presence

    USGS Publications Warehouse

    Peterson, James; Dunham, Jason B.; Howell, Philip; Thurow, Russell; Bonar, Scott

    2002-01-01

    The Western Division of the American Fisheries Society was requested to develop protocols for determining presence/absence and potential habitat suitability for bull trout. The general approach adopted is similar to the process for the marbled murrelet, whereby interim guidelines are initially used, and the protocols are subsequently refined as data are collected. Current data were considered inadequate to precisely identify suitable habitat but could be useful in stratifying sampling units for presence/absence surveys. The presence/absence protocol builds on previous approaches (Hillman and Platts 1993; Bonar et al. 1997), except it uses the variation in observed bull trout densities instead of a minimum threshold density and adjusts for measured differences in sampling efficiency due to gear types and habitat characteristics. The protocol consists of: 1. recommended sample sizes with 80% and 95% detection probabilities for juvenile and resident adult bull trout for day and night snorkeling and electrofishing adjusted for varying habitat characteristics for 50m and 100m sampling units, 2. sampling design considerations, including possible habitat characteristics for stratification, 3. habitat variables to be measured in the sampling units, and 3. guidelines for training sampling crews. Criteria for habitat strata consist of coarse, watershed-scale characteristics (e.g., mean annual air temperature) and fine-scale, reach and habitat-specific features (e.g., water temperature, channel width). The protocols will be revised in the future using data from ongoing presence/absence surveys, additional research on sampling efficiencies, and development of models of habitat/species occurrence.

  6. Bayesian adaptive survey protocols for resource management

    USGS Publications Warehouse

    Halstead, Brian J.; Wylie, Glenn D.; Coates, Peter S.; Casazza, Michael L.

    2011-01-01

    Transparency in resource management decisions requires a proper accounting of uncertainty at multiple stages of the decision-making process. As information becomes available, periodic review and updating of resource management protocols reduces uncertainty and improves management decisions. One of the most basic steps to mitigating anthropogenic effects on populations is determining if a population of a species occurs in an area that will be affected by human activity. Species are rarely detected with certainty, however, and falsely declaring a species absent can cause improper conservation decisions or even extirpation of populations. We propose a method to design survey protocols for imperfectly detected species that accounts for multiple sources of uncertainty in the detection process, is capable of quantitatively incorporating expert opinion into the decision-making process, allows periodic updates to the protocol, and permits resource managers to weigh the severity of consequences if the species is falsely declared absent. We developed our method using the giant gartersnake (Thamnophis gigas), a threatened species precinctive to the Central Valley of California, as a case study. Survey date was negatively related to the probability of detecting the giant gartersnake, and water temperature was positively related to the probability of detecting the giant gartersnake at a sampled location. Reporting sampling effort, timing and duration of surveys, and water temperatures would allow resource managers to evaluate the probability that the giant gartersnake occurs at sampled sites where it is not detected. This information would also allow periodic updates and quantitative evaluation of changes to the giant gartersnake survey protocol. Because it naturally allows multiple sources of information and is predicated upon the idea of updating information, Bayesian analysis is well-suited to solving the problem of developing efficient sampling protocols for species of

  7. Temporal knowledge representation for scheduling tasks in clinical trial protocols.

    PubMed Central

    Weng, Chunhua; Kahn, Michael; Gennari, John

    2002-01-01

    Clinical trial protocols include detailed temporal constraints on treatment and associated tasks. Unlike health-care guidelines, protocols are highly prescriptive. Therefore, informatics applications that enforce such temporal constraints are more directly useful with protocols than with guidelines. Although there are some temporal knowledge representation efforts for health-care guidelines, we find these to be insufficiently expressive for clinical trial protocols. In this paper, we focus on temporal knowledge representation for clinical trial protocols and the task of patient-specific scheduling in protocols. We define a temporal ontology, use it to encode clinical trial protocols, and describe a prototype tool to carry out patient-specific scheduling for the tasks in protocols. We predict that an expressive temporal knowledge representation can support a number of scheduling and management tasks for protocol-based care. PMID:12463951

  8. Efficacy of oral, injectable and pour-on formulations of moxidectin against gastrointestinal nematodes in cattle in New Zealand.

    PubMed

    Leathwick, D M; Miller, C M

    2013-01-31

    The efficacy of moxidectin administered by different routes, against naturally acquired infections of gastrointestinal nematode parasites of cattle, was compared using faecal egg count reduction tests on 14 commercial farms throughout New Zealand. On each farm, groups of 15 calves were sampled for faecal nematode egg count and then treated with ivermectin administered orally, or with moxidectin administered either by the oral, subcutaneous injection or topical (pour-on) route. Samples were again collected 14 days after treatment and efficacy was calculated as the percentage reduction in-group mean egg count between the pre- and post-treatment samples. In addition, efficacy was calculated for individual animals, in order to compare the variability of the different treatments. On four farms untreated control groups were run and five animals from each of the control and all of the moxidectin-treated groups were bled over time to estimate plasma-moxidectin concentrations. Averaged across all tests, the reduction in faecal egg count was significantly greater after treatment with moxidectin oral (91.1%) than following treatment with moxidectin injection (55.5%) or with moxidectin pour-on (51.3%). Low efficacies were invariably against Cooperia oncophora. The oral treatments were significantly less variable in efficacy than the injection and pour-on treatments. Moxidectin concentrations in plasma were highest following subcutaneous injection and lowest following pour-on administration. Plasma levels following oral administration were intermediate, being significantly lower than post-injection and significantly higher than post-pour-on. There was no evidence of transfer of moxidectin to untreated animals through licking. Based on these results, along with those of other studies, it is proposed that oral administration of macrocyclic lactone anthelmintics results in higher concentrations of active reaching the target worms in the gastrointestinal tract than following either

  9. A kind of universal quantum secret sharing protocol

    NASA Astrophysics Data System (ADS)

    Chen, Xiu-Bo; Dou, Zhao; Xu, Gang; He, Xiao-Yu; Yang, Yi-Xian

    2017-01-01

    Universality is an important feature, but less researched in quantum communication protocols. In this paper, a kind of universal quantum secret sharing protocol is investigated. Firstly, we design a quantum secret sharing protocol based on the Borras-Plastino-Batle (BPB) state. Departing from previous research, our protocol has a salient feature in that participants in our protocol only need projective measurement instead of any unitary operations. It makes our protocol more flexible. Secondly, universality of quantum communication protocols is studied for the first time. More specifically, module division of quantum communication protocols and coupling between different modules are discussed. Our aforementioned protocol is analyzed as an example. On one hand, plenty of quantum states (the BPB-class states and the BPB-like-class states, which are proposed in this paper) could be used as carrier to perform our protocol. On the other hand, our protocol also could be regarded as a quantum private comparison protocol with a little revision. These features are rare for quantum communication protocols, and make our protocol more robust. Thirdly, entanglements of the BPB-class states are calculated in the Appendix.

  10. A kind of universal quantum secret sharing protocol.

    PubMed

    Chen, Xiu-Bo; Dou, Zhao; Xu, Gang; He, Xiao-Yu; Yang, Yi-Xian

    2017-01-12

    Universality is an important feature, but less researched in quantum communication protocols. In this paper, a kind of universal quantum secret sharing protocol is investigated. Firstly, we design a quantum secret sharing protocol based on the Borras-Plastino-Batle (BPB) state. Departing from previous research, our protocol has a salient feature in that participants in our protocol only need projective measurement instead of any unitary operations. It makes our protocol more flexible. Secondly, universality of quantum communication protocols is studied for the first time. More specifically, module division of quantum communication protocols and coupling between different modules are discussed. Our aforementioned protocol is analyzed as an example. On one hand, plenty of quantum states (the BPB-class states and the BPB-like-class states, which are proposed in this paper) could be used as carrier to perform our protocol. On the other hand, our protocol also could be regarded as a quantum private comparison protocol with a little revision. These features are rare for quantum communication protocols, and make our protocol more robust. Thirdly, entanglements of the BPB-class states are calculated in the Appendix.

  11. A kind of universal quantum secret sharing protocol

    PubMed Central

    Chen, Xiu-Bo; Dou, Zhao; Xu, Gang; He, Xiao-Yu; Yang, Yi-Xian

    2017-01-01

    Universality is an important feature, but less researched in quantum communication protocols. In this paper, a kind of universal quantum secret sharing protocol is investigated. Firstly, we design a quantum secret sharing protocol based on the Borras-Plastino-Batle (BPB) state. Departing from previous research, our protocol has a salient feature in that participants in our protocol only need projective measurement instead of any unitary operations. It makes our protocol more flexible. Secondly, universality of quantum communication protocols is studied for the first time. More specifically, module division of quantum communication protocols and coupling between different modules are discussed. Our aforementioned protocol is analyzed as an example. On one hand, plenty of quantum states (the BPB-class states and the BPB-like-class states, which are proposed in this paper) could be used as carrier to perform our protocol. On the other hand, our protocol also could be regarded as a quantum private comparison protocol with a little revision. These features are rare for quantum communication protocols, and make our protocol more robust. Thirdly, entanglements of the BPB-class states are calculated in the Appendix. PMID:28079109

  12. Développement de matériaux pour les piles à combustibles SOFC

    NASA Astrophysics Data System (ADS)

    Dubourdieu, G.; Gauthier, G.; Henry, J. Y.; Sanchette, F.; Delépine, J.; Lefebvre-Joud, F.

    2002-04-01

    Dans le cadre des nouveaux programmes du CEA dédiés aux Nouvelles Technologies pour l'Energie, l'un des axes concerne les piles à combustible haute température et tout solide (SOFC). Deux voies de recherche sont présentées ici ; l'une traite de l'élaboration d'électrolytes connus - de type zircone yttriée - en couche mince, par des techniques de dépôt PVD ou CVD à injection, ceci dans le but d'un fonctionnement à plus basse température. L'autre a trait au développement de matériaux d'anode compatibles avec l'utilisation directe du méthane à la place de l'hydrogène. Les chromates de lanthane substitué par le strontium, dont une méthode de synthèse sous forme de poudres très divisées est présentée ici, semblent être des matériaux prometteurs pour cette application, à condition qu'ils ne subissent pas de dégradation en fonctionnement.

  13. Suppléments de zinc pour la gastroentérite aiguë

    PubMed Central

    Goldman, Ran D.

    2013-01-01

    Résumé Question La gastroentérite accompagnée de diarrhée est un problème fréquent chez les enfants et peut entraîner une déshydratation, de la morbidité et, dans certains pays, une mortalité importantes. Y a-t-il lieu de donner des suppléments de zinc dans de tels cas? Réponse Le zinc se retrouve dans divers aliments et, au Canada, certains sont enrichis de zinc. Les suppléments de zinc sont éprouvés comme étant une mesure sûre et efficace pour raccourcir la durée des maladies accompagnées de diarrhée et possiblement réduire d’autres complications, dont la mort. Quoique l’Organisation mondiale de la Santé recommande une dose quotidienne de zinc pendant 10 à 14 jours pour prendre en charge la diarrhée aiguë chez l’enfant, les enfants canadiens qui s’alimentent normalement n’ont pas besoin de tels suppléments.

  14. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2004-12-01

    EF Phobos; L'astéroïde ivre; Bonne nouvelle pour Pluton; Titan; Uranus; Éclipse de lunes triple; IRS13E; J1148+5251; Distances cosmiques; Image gamma; Un impact de plus pour l'extinction K-T?; Un nouveau compagnon pour la Voie Lactée; Supernovae de Lucy et de Tycho; Amas globulaire

  15. Enumeration of bacteria in clinically significant blood cultures in neutropenic and non-neutropenic patients using a pour plate method.

    PubMed

    Rice, P; Spencer, R C

    1991-03-01

    A 3-year review of clinically significant positive blood cultures was undertaken to assess any differences in the blood bacterial count between haematological neutropenic and other non-neutropenic patients. The pour-plate method was used. In Gram-positive infections the pour plate contained colonies in 61% of haematological patients and in 41% of others. In Gram-negative infection the figures were 54% and 25% respectively. The mean numbers of bacteria per ml of blood were increased in haematological patients compared with the others for both groups of organisms.

  16. Canadian Forces Education and Training for Interagency Operational Contexts (Education et Instruction des Forces Canadiennes Pour les Contextes Operationnels Interorganisationnels)

    DTIC Science & Technology

    2009-11-01

    psychologiques de la confiance et de la collaboration interorganisationnelles . Ce PRA exige notamment d’établir une base de référence pour les efforts...et programmes actuels d’éducation et d’instruction des FC afin de pouvoir travailler dans un contexte opérationnel interorganisationnel . À cette fin... interorganisationnel ; 2) avec l’aide des EM, examiner les compétences potentielles de base qui seraient exigées d’une personne pour qu’elle puisse travailler dans

  17. Environmentally Safe and Effective Processes for Paint Removal (Les Procedes Efficaces et Ecologiques pour l’Enlevement des Peintures)

    DTIC Science & Technology

    1993-03-01

    Efficaces et Ecologiques pour l’Enlevement des Peintures ) Papers presented at the 75th Meeting of’the AGARD Structures and Materials Panel, held in Lindau...pour I’Enl1,ement des Peintures ) Dist, Ibution/1 Availability Codes Avail and / or Dist Special h-/ t Papers presented at the 75th Meeting...Priface Dens Ie pussE, In peinture des adronef.% dtAlt enlevde mu moyen do produits chimiques dE&,apants. Coin mdthodes falsalent appall i des ingr~dients

  18. La dermoscopie pour la détection des mélanomes en pratique familiale

    PubMed Central

    Herschorn, Andrea

    2012-01-01

    Résumé Objectif Évaluer l’exactitude diagnostique et l’utilité clinique de la dermoscopie pour la détection de mélanomes en pratique familiale. Sources des données Nous avons fait une recension dans les bases de données Ovid MEDLINE (de 1946 à juin 2011), EMBASE, PubMed et Cochrane à l’aide des expressions suivantes en anglais: dermoscopy, dermatoscopy, epiluminescence microscopy, family practice, general practice, primary health care, melanoma, skin neoplasms et pigmented nevus. Pour être prises en considération, les études devaient être des articles de recherche primaire ayant pour sujets des médecins de famille, ainsi que la formation en dermoscopie et son utilisation en tant qu’intervention. La recherche a produit 4 articles qui répondaient aux critères d’inclusion et présentaient des données probantes de niveau I selon la définition du Groupe d’étude canadien sur les soins de santé préventifs. Message principal Dans le milieu de la pratique familiale, la dermoscopie a une sensibilité plus élevée que l’examen à l’œil nu pour la détection des mélanomes sans avoir, généralement, une spécificité moins grande. La dermoscopie aide aussi à accroître le degré de confiance des médecins de famille dans leur diagnostic préliminaire des lésions. L’utilisation de la dermoscopie plutôt que l’examen à l’œil nu augmente la probabilité qu’une lésion jugée cancéreuse le soit de fait et qu’une lésion jugée bénigne le soit en réalité. Conclusion Il est démontré que la dermoscopie est un outil utile et relativement peu coûteux pour la détection des mélanomes en pratique familiale. Cette technique rend les médecins de famille plus confiants dans l’exactitude de leurs demandes de consultations auprès de dermatologues et contribue à diminuer les biopsies inutiles. La dermoscopie peut se révéler plus particulièrement utile dans l’examen des patients à risque élevé de mélanomes, étant donn

  19. An Evaluation of Protocol Enhancing Proxies and File Transport Protocols for Satellite Communication

    NASA Technical Reports Server (NTRS)

    Finch, Patrick Eugene; Sullivan, Donald; Ivancic, William D.

    2012-01-01

    NASA is utilizing Global Hawk aircraft in high-altitude, long-duration Earth science missions. Communications with the onboard research equipment and sensors (the science payload) is via Ku-Band radio utilizing satellites in geostationary orbits. All payload communications use standard Internet Protocols and routing, and much of the data to be transferred is comprised of very large files. The science community is interested in fully utilizing these communication links to retrieve data as quickly and reliably as possible. A test bed was developed at NASA Ames to evaluate modern transport protocols as well as Protocol Enhancing Proxies (PEPs) to determine what tools best fit the needs of the science community. This paper describes the test bed used, the protocols, the PEPs that were evaluated, the particular tests performed and the results and conclusions.

  20. Implications of Multilingual Interoperability of Speech Technology for Military Use (Les implications de l’interoperabilite multilingue des technologies vocales pour applications militaires)

    DTIC Science & Technology

    2004-09-01

    tant pour les produits du commerce (COTS), que pour le développement de nouvelles technologies. L’atelier a été organisé en 4 sessions, à savoir...publication sont souhaitables. Si vous souhaitez recevoir une notification électronique de la disponibilité des rapports de la RTO au fur et à mesure de leur

  1. Hybrid protocol of remote implementations of quantum operations

    SciTech Connect

    Zhao Ningbo; Wang Anmin

    2007-12-15

    We propose a protocol of remote implementations of quantum operations by hybridizing bidirectional quantum-state teleportation (BQST) [Huelga et al., Phys. Rev. A 63, 042303 (2001)] and the Wang protocol [Wang, Phys. Rev. A 74, 032317 (2006)]. The protocol is available for remote implementations of quantum operations in the restricted sets specified in the paper. We also give a proof of the protocol and point out its optimization. As an extension, this hybrid protocol can be reduced to the BQST and Wang protocols.

  2. DoD Message Protocol Report. Volume II. Message Transfer Protocol Requirements Analysis.

    DTIC Science & Technology

    1981-12-15

    transmission instructions. This assurance can, in principle, be provided by either the message service (where a message is prepared) or by the message...transfer protocol. This document does not assume it is always practical for a message service to assure message correctness and so prescribes... assure service and speed to urgent messages. The protocol must also ensure aginst unauthorized access to high precedence service . When a message

  3. Protocol Interoperability Between DDN and ISO (Defense Data Network and International Organization for Standardization) Protocols

    DTIC Science & Technology

    1988-08-01

    Service 44 Network Layer: DIS 8208 X.25 Packet Level Protocol for Data Terminal Equipment DIS 8348 Network Service Definition IS 8473 Protocol for...established One TC established for collision (one way) given pair of socket Addressing Any possible structure Static length Expedited data Yes, negotiable by...Explicit or implicit Explicit jReloas Phase: Orderly release No Yes Abrupt release Yes Yes 68 15.3.1 TC Establish Phase Connection Collision . In TCP, if the

  4. UV impacts avoided by the Montreal Protocol.

    PubMed

    Newman, Paul A; McKenzie, Richard

    2011-07-01

    Temporal and geographical variabilities in the future "world expected" UV environment are compared with the "world avoided", which would have occurred without the Montreal Protocol on Substances That Deplete the Ozone Layer and its subsequent amendments and adjustments. Based on calculations of clear-sky UV irradiances, the effects of the Montreal Protocol have been hugely beneficial to avoid the health risks, such as skin cancer, which are associated with high UV, while there is only a small increase in health risks, such as vitamin D deficiency, that are associated with low UV. However, interactions with climate change may lead to changes in cloud and albedo, and possibly behavioural changes that could also be important.

  5. New protocol for lentiviral vector mass production.

    PubMed

    Segura, María Mercedes; Garnier, Alain; Durocher, Yves; Ansorge, Sven; Kamen, Amine

    2010-01-01

    Multiplasmid transient transfection is the most widely used technique for the generation of lentiviral vectors. However, traditional transient transfection protocols using 293 T adherent cells and calcium phosphate/DNA co-precipitation followed by ultracentrifugation are tedious, time-consuming, and difficult to scale up. This chapter describes a streamlined protocol for the fast mass production of lentiviral vectors and their purification by affinity chromatography. Lentiviral particles are generated by transient transfection of suspension growing HEK 293 cells in serum-free medium using polyethylenimine (PEI) as transfection reagent. Lentiviral vector production is carried out in Erlenmeyer flasks agitated on orbital shakers requiring minimum supplementary laboratory equipment. Alternatively, the method can be easily scaled up to generate larger volumes of vector stocks in bioreactors. Heparin affinity chromatography allows for selective concentration and purification of lentiviral particles in a singlestep directly from vector supernatants. The method is suitable for the production and purification of different vector pseudotypes.

  6. UV Impacts Avoided by the Montreal Protocol

    NASA Technical Reports Server (NTRS)

    Newman, Paul; McKenzie, Richard

    2010-01-01

    Temporal and geographical variabilities in the future "World Expected" UV environment are compared with the "World Avoided", which would have occurred without the Montreal Protocol on protection of the ozone layer and its subsequent amendments and adjustments. Based on calculations of clear-sky UV irradiances, the effects of the Montreal Protocol have been hugely beneficial to avoid the health risks, such as skin cancer, which are associated with high UV, while there is only a small increase in health risks, such as vitamin D deficiency, that are associated with low UV. However, interactions with climate change may lead to changes in cloud and albedo, and possibly behavioural changes which could also be important.

  7. Protocol independent adaptive route update for VANET.

    PubMed

    Rasheed, Asim; Ajmal, Sana; Qayyum, Amir

    2014-01-01

    High relative node velocity and high active node density have presented challenges to existing routing approaches within highly scaled ad hoc wireless networks, such as Vehicular Ad hoc Networks (VANET). Efficient routing requires finding optimum route with minimum delay, updating it on availability of a better one, and repairing it on link breakages. Current routing protocols are generally focused on finding and maintaining an efficient route, with very less emphasis on route update. Adaptive route update usually becomes impractical for dense networks due to large routing overheads. This paper presents an adaptive route update approach which can provide solution for any baseline routing protocol. The proposed adaptation eliminates the classification of reactive and proactive by categorizing them as logical conditions to find and update the route.

  8. Protocol Independent Adaptive Route Update for VANET

    PubMed Central

    Rasheed, Asim; Qayyum, Amir

    2014-01-01

    High relative node velocity and high active node density have presented challenges to existing routing approaches within highly scaled ad hoc wireless networks, such as Vehicular Ad hoc Networks (VANET). Efficient routing requires finding optimum route with minimum delay, updating it on availability of a better one, and repairing it on link breakages. Current routing protocols are generally focused on finding and maintaining an efficient route, with very less emphasis on route update. Adaptive route update usually becomes impractical for dense networks due to large routing overheads. This paper presents an adaptive route update approach which can provide solution for any baseline routing protocol. The proposed adaptation eliminates the classification of reactive and proactive by categorizing them as logical conditions to find and update the route. PMID:24723807

  9. An Evaluation of UDP Transport Protocols

    SciTech Connect

    Carter, S

    2004-12-21

    Although the speed of LAN and WAN networking is growing at an exponential rate, the applications that use those networks have not followed suit. With fiber optic interconnects, gigahertz processor speeds, and 10 gigabit per second network interface cards, hardware does not seem to be the limiting factor. It is becoming increasingly obvious that the protocols that are the basis of networking today are ill-suited to a new generation of networking technology. For this reason, Oak Ridge National Laboratory is particularly interested in improving bulk transfers over high-bandwidth, high-latency networks because of its involvement in storage and in the transfer of data for cutting-edge scientific applications. This report summarizes our evaluation of a new group of protocols specifically designed to get more useful bandwidth from today's high speed, wide area networks.

  10. Approximation techniques of a selective ARQ protocol

    NASA Astrophysics Data System (ADS)

    Kim, B. G.

    Approximations to the performance of selective automatic repeat request (ARQ) protocol with lengthy acknowledgement delays are presented. The discussion is limited to packet-switched communication systems in a single-hop environment such as found with satellite systems. It is noted that retransmission of errors after ARQ is a common situation. ARQ techniques, e.g., stop-and-wait and continuous, are outlined. A simplified queueing analysis of the selective ARQ protocol shows that exact solutions with long delays are not feasible. Two approximation models are formulated, based on known exact behavior of a system with short delays. The buffer size requirements at both ends of a communication channel are cited as significant factor for accurate analysis, and further examinations of buffer overflow and buffer lock-out probability and avoidance are recommended.

  11. D-RATS 2011: RAFT Protocol Overview

    NASA Technical Reports Server (NTRS)

    Utz, Hans

    2011-01-01

    A brief overview presentation on the protocol used during the D-RATS2011 field test for file transfer from the field-test robots at Black Point Lava Flow AZ to Johnson Space Center, Houston TX over a simulated time-delay. The file transfer actually uses a commercial implementation of an open communications standard. The focus of the work lies on how to make the state of the distributed system observable.

  12. Building America House Simulation Protocols (Revised)

    SciTech Connect

    Hendron, R.; Engebrecht, C.

    2010-10-01

    The House Simulation Protocol document was developed to track and manage progress toward Building America's multi-year, average whole-building energy reduction research goals for new construction and existing homes, using a consistent analytical reference point. This report summarizes the guidelines for developing and reporting these analytical results in a consistent and meaningful manner for all home energy uses using standard operating conditions.

  13. CREATION OF THE MODEL ADDITIONAL PROTOCOL

    SciTech Connect

    Houck, F.; Rosenthal, M.; Wulf, N.

    2010-05-25

    In 1991, the international nuclear nonproliferation community was dismayed to discover that the implementation of safeguards by the International Atomic Energy Agency (IAEA) under its NPT INFCIRC/153 safeguards agreement with Iraq had failed to detect Iraq's nuclear weapon program. It was now clear that ensuring that states were fulfilling their obligations under the NPT would require not just detecting diversion but also the ability to detect undeclared materials and activities. To achieve this, the IAEA initiated what would turn out to be a five-year effort to reappraise the NPT safeguards system. The effort engaged the IAEA and its Member States and led to agreement in 1997 on a new safeguards agreement, the Model Protocol Additional to the Agreement(s) between States and the International Atomic Energy Agency for the Application of Safeguards. The Model Protocol makes explicit that one IAEA goal is to provide assurance of the absence of undeclared nuclear material and activities. The Model Protocol requires an expanded declaration that identifies a State's nuclear potential, empowers the IAEA to raise questions about the correctness and completeness of the State's declaration, and, if needed, allows IAEA access to locations. The information required and the locations available for access are much broader than those provided for under INFCIRC/153. The negotiation was completed in quite a short time because it started with a relatively complete draft of an agreement prepared by the IAEA Secretariat. This paper describes how the Model Protocol was constructed and reviews key decisions that were made both during the five-year period and in the actual negotiation.

  14. [Cooperation protocols, which concept for nursing care?].

    PubMed

    Le Boeuf, Dominique

    2010-12-01

    The implementation of cooperation protocols as provided for by the "Hospital, patients, health and regions" Law may greatly alter the organisation of healthcare practices. But an excessively limited vision, focused on the medical act to be delegated, might remove the clinical aspect of the nurse's role and reduce it to merely executing prescriptions. The French National Order of Nurses, through the opinions it will give to national health Authorities, wishes to prevent this danger.

  15. Instability Free Routing: Beyond One Protocol Instance

    DTIC Science & Technology

    2008-12-01

    assigned a Rout- ing Information Base (RIB) [13]. This database is used to store the routing information related to the routing process (e.g., routes...presents routing anomalies that can derive from route selection by itself, i.e., without any route redis - tribution configured between the routing... redis - tributed into the RIP protocol, all RIP messages received from the neighbors are in fact discarded independently of the AD values. This

  16. Mars Sample Handling Protocol Workshop Series

    NASA Technical Reports Server (NTRS)

    Rummel, John D. (Editor); Race, Margaret S. (Editor); Acevedo, Sara (Technical Monitor)

    2000-01-01

    This document is the report resulting from the first workshop of the series on development of the criteria for a Mars sample handling protocol. Workshop 1 was held in Bethesda, Maryland on March 20-22, 2000. This report serves to document the proceedings of Workshop 1; it summarizes relevant background information, provides an overview of the deliberations to date, and helps frame issues that will need further attention or resolution in upcoming workshops. Specific recommendations are not part of this report.

  17. The Groningen Protocol - the Jewish perspective.

    PubMed

    Gesundheit, Benjamin; Steinberg, Avraham; Blazer, Shraga; Jotkowitz, Alan

    2009-01-01

    Despite significant advances in neonatology, there will always be newborns with serious life-threatening conditions creating most difficult bioethical dilemmas. Active euthanasia for adult patients is one of the most controversial bioethical questions; for severely ill neonates, the issue is even more complex, due to their inability to take part in any decision concerning their future. The Groningen Protocol introduced in 2005 by P.J. Sauer proposes criteria allowing active euthanasia for severely ill, not necessarily terminal, newborns with incurable conditions and poor quality of life in order to spare them unbearable suffering. We discuss the ethical dilemma and ideological foundations of the protocol, the opinions of its defenders and critics, and the dangers involved. The Jewish perspective relating to the subject is presented based on classical Jewish sources, which we trust may enrich modern bioethical debates. In Jewish law, the fetus acquires full legal status only after birth. However, while the lives of terminally ill neonates must in no way be actively destroyed or shortened, there is no obligation to make extraordinary efforts to prolong their lives. Accurate preimplantation or prenatal diagnosis might significantly reduce the incidence of nonviable births, but active killing of infants violates the basic foundations of Jewish law, and opens the 'slippery slope' for uncontrolled abuse. Therefore, we call upon the international medical and bioethical community to reject the Groningen Protocol that permits euthanization and to develop ethical guidelines for the optimal care of severely compromised neonates.

  18. Analysis of Security Protocols for Mobile Healthcare.

    PubMed

    Wazid, Mohammad; Zeadally, Sherali; Das, Ashok Kumar; Odelu, Vanga

    2016-11-01

    Mobile Healthcare (mHealth) continues to improve because of significant improvements and the decreasing costs of Information Communication Technologies (ICTs). mHealth is a medical and public health practice, which is supported by mobile devices (for example, smartphones) and, patient monitoring devices (for example, various types of wearable sensors, etc.). An mHealth system enables healthcare experts and professionals to have ubiquitous access to a patient's health data along with providing any ongoing medical treatment at any time, any place, and from any device. It also helps the patient requiring continuous medical monitoring to stay in touch with the appropriate medical staff and healthcare experts remotely. Thus, mHealth has become a major driving force in improving the health of citizens today. First, we discuss the security requirements, issues and threats to the mHealth system. We then present a taxonomy of recently proposed security protocols for mHealth system based on features supported and possible attacks, computation cost and communication cost. Our detailed taxonomy demonstrates the strength and weaknesses of recently proposed security protocols for the mHealth system. Finally, we identify some of the challenges in the area of security protocols for mHealth systems that still need to be addressed in the future to enable cost-effective, secure and robust mHealth systems.

  19. Anaerobic protocol for assessing industrial waste treatability

    SciTech Connect

    Young, J.C.; Khandaker, N.R.

    1996-11-01

    Recent promulgation of strict standards for industrial waste pretreatment has greatly increased the number of wastewaters that are candidates for anaerobic treatment. The challenge with industrial wastes is to determine the potential for anaerobic biodegradation prior to investing large amounts of time and expense in design and field investigation. Various methods have been used to assess the treatability of industrial wastewaters, but the methodology has varied significantly. In response to the need for a consistent procedure for determining the treatability of different industrial wastewaters by anaerobic processes, Young developed an anaerobic treatability screening protocol. The purpose of this paper is to describe the protocol and to report a number of case studies in which the test protocol was used to determine the feasibility of using anaerobic processes for treating specific industrial wastes. Specific examples include food processing wastes, chemical production wastes, petroleum wastes, and landfill leachate. Treatability was based on assessment of the rate and extent of biodegradation, identification of the presence of toxic substances, and dilution effects.

  20. Large family of quantum weak coin-flipping protocols

    SciTech Connect

    Mochon, Carlos

    2005-08-15

    Each classical public-coin protocol for coin flipping is naturally associated with a quantum protocol for weak coin flipping. The quantum protocol is obtained by replacing classical randomness with quantum entanglement and by adding a cheat detection test in the last round that verifies the integrity of this entanglement. The set of such protocols defines a family which contains the protocol with bias 0.192 previously found by the author, as well as protocols with bias as low as 1/6 described herein. The family is analyzed by identifying a set of optimal protocols for every number of messages. In the end, tight lower bounds for the bias are obtained which prove that 1/6 is optimal for all protocols within the family.

  1. 21 CFR 814.19 - Product development protocol (PDP).

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES General § 814.19 Product development protocol (PDP). A class III device for which a product development protocol has been declared completed by FDA...

  2. SPIRIT 2013 Statement: defining standard protocol items for clinical trials.

    PubMed

    Chan, An-Wen; Tetzlaff, Jennifer M; Altman, Douglas G; Laupacis, Andreas; Gøtzsche, Peter C; Krle A-Jerić, Karmela; Hrobjartsson, Asbjørn; Mann, Howard; Dickersin, Kay; Berlin, Jesse A; Dore, Caroline J; Parulekar, Wendy R; Summerskill, William S M; Groves, Trish; Schulz, Kenneth F; Sox, Harold C; Rockhold, Frank W; Rennie, Drummond; Moher, David

    2015-12-01

    The protocol of a clinical trial serves as the foundation for study planning, conduct, reporting, and appraisal. However, trial protocols and existing protocol guidelines vary greatly in content and quality. This article describes the systematic development and scope of SPIRIT (Standard Protocol Items: Recommendations for Interventional Trials) 2013, a guideline for the minimum content of a clinical trial protocol. The 33-item SPIRIT checklist applies to protocols for all clinical trials and focuses on content rather than format. The checklist recommends a full description of what is planned; it does not prescribe how to design or conduct a trial. By providing guidance for key content, the SPIRIT recommendations aim to facilitate the drafting of high-quality protocols. Adherence to SPIRIT would also enhance the transparency and completeness of trial protocols for the benefit of investigators, trial participants, patients, sponsors, funders, research ethics committees or institutional review boards, peer reviewers, journals, trial registries, policymakers, regulators, and other key stakeholders.

  3. TOXICITY REDUCTION EVALUATION PROTOCOL FOR MUNICIPAL WASTEWATER TREATMENT PLANTS

    EPA Science Inventory

    This document presents a generalized protocol for conducting a Toxicity Reduction evaluation (TRE) at a municipal wastewater treatment plant (WWTP). This protocol is designed to provide guidance to municipalities in preparing TRE plans, evaluating the information generated durin...

  4. Novel protocols for P300-based brain-computer interfaces.

    PubMed

    Salvaris, Mathew; Cinel, Caterina; Citi, Luca; Poli, Riccardo

    2012-01-01

    The oddball protocol is often used in brain-computer interfaces (BCIs) to induce P300 ERPs, although, recently, some issues have been shown to detrimentally effect its performance. In this paper, we study a new periodic protocol and explore whether it can compete with the standard oddball protocol within the context of a BCI mouse. We found that the new protocol consistently and significantly outperforms the standard oddball protocol in relation to information transfer rates (33 bits/min for the former and 22 bits/min for the latter, measured at 90% accuracy) as well as P300 amplitudes. Furthermore, we performed a comparison of two periodic protocols with two less conventional oddball-like protocols that reveals the importance of the interactions between task and sequence in determining the success of a protocol.

  5. METHODS AND ANALYSES FOR IMPLEMENTING NATURAL ATTENUATION PROTOCOLS

    EPA Science Inventory

    Technical protocols for evaluating natural attenuation at petroleum hydrocarbon and chlorinated solvent contaminated sites specify the analysis of electron acceptors and metabolic by-products for identifying and quantifying natural attenuation processes. However, these protocols ...

  6. SPIRIT 2013 statement: defining standard protocol items for clinical trials.

    PubMed

    Chan, An-Wen; Tetzlaff, Jennifer M; Altman, Douglas G; Laupacis, Andreas; Gøtzsche, Peter C; Krleža-Jerić, Karmela; Hróbjartsson, Asbjørn; Mann, Howard; Dickersin, Kay; Berlin, Jesse A; Doré, Caroline J; Parulekar, Wendy R; Summerskill, William S M; Groves, Trish; Schulz, Kenneth F; Sox, Harold C; Rockhold, Frank W; Rennie, Drummond; Moher, David

    2013-02-05

    The protocol of a clinical trial serves as the foundation for study planning, conduct, reporting, and appraisal. However, trial protocols and existing protocol guidelines vary greatly in content and quality. This article describes the systematic development and scope of SPIRIT (Standard Protocol Items: Recommendations for Interventional Trials) 2013, a guideline for the minimum content of a clinical trial protocol.The 33-item SPIRIT checklist applies to protocols for all clinical trials and focuses on content rather than format. The checklist recommends a full description of what is planned; it does not prescribe how to design or conduct a trial. By providing guidance for key content, the SPIRIT recommendations aim to facilitate the drafting of high-quality protocols. Adherence to SPIRIT would also enhance the transparency and completeness of trial protocols for the benefit of investigators, trial participants, patients, sponsors, funders, research ethics committees or institutional review boards, peer reviewers, journals, trial registries, policymakers, regulators, and other key stakeholders.

  7. Hernie inguinale en Afrique subsaharienne: quelle place pour la technique de Shouldice?

    PubMed Central

    Traoré, Drissa; Diarra, Lasseny; Coulibaly, Bréhima; Bengaly, Brehima; Togola, Birama; Traoré, Alhassane; Traoré, Hamady; Ongoïba, Nouhoum; Sissoko, Filifing; Koumaré, Abdel Karim

    2015-01-01

    L'objectif était d’étudier l'aspect épidémio-clinique et thérapeutique de la hernie inguinale selon la technique de Shouldice. Nous avons réalisé une étude rétrospective, portant sur les patients opérés pour hernie inguinale selon la technique de Shouldice dans le service de chirurgie B du CHU du Point G, Bamako, Mali. Il a été enregistré 225patients opérés selon la technique de Shouldice. L’âge moyen était de 49 ans +/- 17,7. Il y avait 90,7% (204) hommes soit un sex-ratio de 9,7. Les cultivateurs, les ménagères et les ouvriers ont représenté 51,1% (115). Dans 75,2% (169) les patients ont consulté pour tuméfaction inguinale. En pré opératoire, la hernie était compliquée chez 82 (36,4%) patients dont 24 cas de récidive. L’étranglement herniaire a été la principale complication pré opératoire 58,5% (48/82). Les suites opératoires à un an ont été simples chez 94,2%(210) des patients; elles étaient marquées par 8 cas de récidive, 4 cas de névralgie, 2 cas d'atrophie testiculaire, 1 cas de chéloïde. La technique de Shouldice est la technique de choix pour la cure de la hernie inguinale dans les pays en voie de développement à cause du bon résultat et son coût peu onéreux par rapport aux autres techniques utilisant des dispositifs médicaux. PMID:26664551

  8. A Model Based Security Testing Method for Protocol Implementation

    PubMed Central

    Fu, Yu Long; Xin, Xiao Long

    2014-01-01

    The security of protocol implementation is important and hard to be verified. Since the penetration testing is usually based on the experience of the security tester and the specific protocol specifications, a formal and automatic verification method is always required. In this paper, we propose an extended model of IOLTS to describe the legal roles and intruders of security protocol implementations, and then combine them together to generate the suitable test cases to verify the security of protocol implementation. PMID:25105163

  9. Two Quantum Direct Communication Protocols Based on Quantum Search Algorithm

    NASA Astrophysics Data System (ADS)

    Xu, Shu-Jiang; Chen, Xiu-Bo; Wang, Lian-Hai; Niu, Xin-Xin; Yang, Yi-Xian

    2015-07-01

    Based on the properties of two-qubit Grover's quantum search algorithm, we propose two quantum direct communication protocols, including a deterministic secure quantum communication and a quantum secure direct communication protocol. Secret messages can be directly sent from the sender to the receiver by using two-qubit unitary operations and the single photon measurement with one of the proposed protocols. Theoretical analysis shows that the security of the proposed protocols can be highly ensured.

  10. Single-Photon Secure Quantum Dialogue Protocol Without Information Leakage

    NASA Astrophysics Data System (ADS)

    Zhou, Nan-Run; Hua, Tian-Xiang; Wu, Gui-Tong; He, Chao-Sheng; Zhang, Ye

    2014-11-01

    Combining the idea of ping-pong protocol with Controlled-NOT operation, we propose a secure quantum dialogue protocol based on single-photonss. Bob obtains the information of the encrypted quantum state by performing Controlled-NOT operation on the auxiliary particle and the encrypted single-photonss. Unlike the previous quantum dialogue protocols based on single-photonss, the proposed protocol not only overcomes information leakage but also possesses an acceptable efficiency.

  11. Identity-Based Authenticated Key Agreement Protocols without Bilinear Pairings

    NASA Astrophysics Data System (ADS)

    Cao, Xuefei; Kou, Weidong; Yu, Yong; Sun, Rong

    This letter proposes an identity-based authenticated key agreement protocol. Different from available comparable ones, the new protocol realizes implicit authentication without bilinear pairings which makes it more efficient. The security of proposed protocol can be reduced to the standard Computational Diffie-Hellman problem. Two variants of the protocol are also given, with one achieving the security-efficiency trade-off and the other providing authenticated key agreement between users of different domains.

  12. Prete-moi Ton Logiciel pour Ecrire un Mot (Lend Me Your Software Program So I Can Write a Letter).

    ERIC Educational Resources Information Center

    Mangenot, Francois

    1993-01-01

    A brief discussion and description of one commercially available software package ("Pour Ecrire un Mot") for writing letters of various types uses the love letter as an example of the software's functioning. Answers to the prompting questions on the screen determine the few variable parameters of the text to be generated. (four…

  13. Approche pour les comportements sexuels inappropriés chez des personnes atteintes de démence

    PubMed Central

    Joller, Petra; Gupta, Neeraj; Seitz, Dallas P.; Frank, Christopher; Gibson, Michelle; Gill, Sudeep S.

    2013-01-01

    Résumé Objectif Présenter aux médecins de famille une mise à jour sur l’approche au diagnostic et à la prise en charge des comportements sexuels inappropriés (CSI) chez les personnes atteintes de démence. Sources des données On a fait une recherche dans MEDLINE et EMBASE pour cerner des articles pertinents publiés avant juin 2012. On n’a trouvé aucune étude de niveau I; la plupart des articles fournissaient des données probantes de niveau III. Message principal Les comportements sexuels inappropriés sont fréquents chez les personnes atteintes de démence. Divers facteurs (p. ex., culturels, religieux, perspectives sociétales de la sexualité gériatrique, questions médicolégales) pourraient compliquer l’évaluation de tels comportements et doivent être pris en compte pour permettre une prise en charge appropriée à chaque patient. Il existe des outils pour documenter les CSI. Des interventions créatives non pharmacologiques pour les CSI pourraient être efficaces quand elles sont adaptées à chaque patient. Certaines pharmacothérapies (p. ex., antidépresseurs, antiandrogènes, antipsychotiques et anticonvulsifs) ont été proposées pour les symptômes qui ne répondent pas aux interventions non pharmacologiques. Par ailleurs, les données probantes à l’appui des traitements à l’aide de médicaments sont limitées, les effets secondaires demeurent un aspect important à considérer et il est incertain s’ils devraient être utilisés comme traitement de première ou de deuxième intention. Conclusion Quoiqu’il n’y ait pas d’algorithme de traitements empiriquement établi pour les CSI reliés à la démence, les ouvrages actuels offrent certaines données probantes concernant diverses thérapies pharmacologiques et non pharmacologiques. Des recherches de grande qualité plus approfondies sont nécessaires de toute urgence pour guider les médecins de famille qui prennent en charge des patients qui ont des CSI reliés à la

  14. Going Online with Protocols: New Tools for Teaching and Learning

    ERIC Educational Resources Information Center

    McDonald, Joseph P.; Zydney, Janet Mannheimer; Dichter, Alan; McDonald, Elizabeth C.

    2012-01-01

    Many users of the popular professional development book, "The Power of Protocols," discovered that protocols are also very useful for online teaching. This new book, by three of the same authors, focuses on using protocols to enhance learning with their students in multiple environments including online--a growing sector of the educational world.…

  15. Implementation of Siemens USS protocol into LabVIEW.

    PubMed

    Hosek, P; Diblik, M

    2011-10-01

    This article gives basic overview of the USS protocol as a communication interface to drive Siemens frequency inverters. It presents our implementation of this protocol into LabVIEW, as there was permanent demand from the community of the users to have native LabVIEW implementation of the USS protocol. It also states encountered problems and their solutions.

  16. Choosing and applying cryopreservation protocols to new species or tissues

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Some have proposed that it is necessary to develop new cryopreservation protocols for each new plant or tissue. We have found that standard protocols can be applied to many plants with few if any changes. Screening of groups of plants in a genus show that many protocols are easily applied to large ...

  17. The Interlibrary Loan Protocol: An OSI Solution to ILL Messaging.

    ERIC Educational Resources Information Center

    Turner, Fay

    1990-01-01

    Discusses the interlibrary loan (ILL) protocol, a standard based on the principles of the Open Systems Interconnection (OSI) Reference Model. Benefits derived from protocol use are described, the status of the protocol as an international standard is reviewed, and steps taken by the National Library of Canada to facilitate migration to an ILL…

  18. On the Security of RFID Group Scanning Protocols

    NASA Astrophysics Data System (ADS)

    Dang, Duc Nguyen; Kim, Kwangjo

    A RFID group scanning protocol enables a RFID reader to produce a proof of co-existence of multiple RFID tags. This type of protocol is also referred to as yoking-proof, grouping-proof and co-existence proof. In this letter, we show that all of the previous group scanning protocols are vulnerable to relay attack.

  19. DEVELOPMENT OF MODELING PROTOCOLS FOR USE IN DETERMINING SEDIMENT TMDLS

    EPA Science Inventory

    Modeling protocols for use in determining sediment TMDLs are being developed to provide the Office of Water, Regions and the States with assistance in determining TMDLs for sediment impaired water bodies. These protocols will supplement the protocols developed by the Office of W...

  20. Coping with threats of terrorism: a protocol for group intervention.

    PubMed

    Ottenstein, Richard J

    2003-01-01

    This article presents a group protocol designed to assist people in coping with direct and ongoing threats of terrorism. The protocol is intended to enable participants to address the psychological issues necessary to cope during periods of extreme threat. A step-by-step description of the protocol is provided.

  1. 21 CFR 814.19 - Product development protocol (PDP).

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Product development protocol (PDP). 814.19 Section...) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES General § 814.19 Product development protocol (PDP). A class III device for which a product development protocol has been declared completed by FDA...

  2. 21 CFR 814.19 - Product development protocol (PDP).

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Product development protocol (PDP). 814.19 Section...) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES General § 814.19 Product development protocol (PDP). A class III device for which a product development protocol has been declared completed by FDA...

  3. Spacelab system analysis: The modified free access protocol: An access protocol for communication systems with periodic and Poisson traffic

    NASA Technical Reports Server (NTRS)

    Ingels, Frank; Owens, John; Daniel, Steven

    1989-01-01

    The protocol definition and terminal hardware for the modified free access protocol, a communications protocol similar to Ethernet, are developed. A MFA protocol simulator and a CSMA/CD math model are also developed. The protocol is tailored to communication systems where the total traffic may be divided into scheduled traffic and Poisson traffic. The scheduled traffic should occur on a periodic basis but may occur after a given event such as a request for data from a large number of stations. The Poisson traffic will include alarms and other random traffic. The purpose of the protocol is to guarantee that scheduled packets will be delivered without collision. This is required in many control and data collection systems. The protocol uses standard Ethernet hardware and software requiring minimum modifications to an existing system. The modification to the protocol only affects the Ethernet transmission privileges and does not effect the Ethernet receiver.

  4. Characteristics of Anorthite-Pyroxene Ceramics Made from Hot-Poured Steelmaking Slag

    NASA Astrophysics Data System (ADS)

    Li, Bowen; He, Mingsheng; Hwang, Jiann-Yang; Gan, Wangui

    2017-02-01

    Steelmaking slag is an alkaline byproduct generated from the steelmaking process. It consists mainly of oxides of calcium, iron, silicon, magnesium, and aluminum. It has a volumetric production in the steelmaking industry which has made a great impact on environment remediation. In this study, anorthite-pyroxene ceramic was prepared with hot-poured steelmaking slag, kaolin, and quartz with a sintering process. The ceramic products can be well sintered by heating at 1200°C, but they melted at 1300°C. The major mineral phases were anorthite, pyroxene, and spinel when sintering at 1150°C, while the characteristic peaks of belite, alite, and quartz in raw materials disappeared. The major mineral components of the ceramic become anorthite and pyroxene at 1200°C. The additional mixed wollastonite was involved in a sintering reaction when the temperature increased to 1200°C. The newly crystalized grains were uniformly formed and distributed.

  5. Fabrication et etude de cristaux photoniques pour les longueurs d'onde de telecommunication optique

    NASA Astrophysics Data System (ADS)

    Aboudihab, Ismail

    Nous avons fabrique et etudie des cristaux photoniques bidimensionnels et tridimensionnels. Les cristaux 3D sont constitues de microbilles de polystyrene autoassemblees. La structure inverse en BaTiO3 a ete aussi fabriquee, ou l'on remplace l'espace entre les microbilles par du BaTiO3, alors que les microbilles sont eliminees. Nous avons essaye en particulier de comprendre les differents phenomenes qui influencent la cristallisation de ces structures afin d'obtenir des films de meilleure qualite. Les cristaux bidimensionnels, constitues de cylindres vides imbibes dans un semiconducteur (As2S3 ou Si), sont obtenus par holographie laser. Nous avons montre que cette technique est tres interessante pour la production en serie de ces structures. Des guides d'ondes, des coupleurs, et des jonctions Y, imbibes dans des cristaux photoniques bidimensionnels, ont aussi ete fabriques. Des mesures optiques et des simulations numeriques ont ete menees dans le but de caracteriser ces structures.

  6. Efficacy of moxidectin pour-on against nematode infections in cattle.

    PubMed

    Hubert, J; Kerboueuf, D; Le Stang, J P; Cardinaud, B; Blond, F

    1995-06-24

    Three groups of eight calves, naturally infected with gastrointestinal nematodes and artificially infected with Dictyocaulus viviparus were used to evaluate the efficacy of moxidectin pour-on at dose rates of 0.35 mg/kg and 0.5 mg/kg bodyweight. With both doses the efficacy was 100 per cent against adult D viviparus, Trichostrongylus axei, Ostertagia species and Nematodirus helvetianus. It was more than 99 per cent against Ostertagia and Nematodirus species fourth stage larvae. A small number of Cooperia species were found after treatment, and for this parasite, the efficacy of moxidectin ranged from 97.6 per cent against the larval stages to 98.8 per cent against the adults. No adverse reactions to the moxidectin treatment were observed.

  7. Soft Drink “Pouring Rights”: Marketing Empty Calories to Children

    PubMed Central

    Nestle, Marion

    2000-01-01

    Healthy People 2010 objectives call for meals and snacks served in schools to contribute to overall diets that meet federal dietary guidelines. Sales in schools of foods and drinks high in calories and low in nutrients undermine this health objective, as well as participation in the more nutritious, federally sponsored, school lunch programs. Competitive foods also undermine nutrition information taught in the classroom. Lucrative contracts between school districts and soft drink companies for exclusive rights to sell one brand are the latest development in the increasing commercialization of school food. These contracts, intended to elicit brand loyalty among young children who have a lifetime of purchases ahead of them, are especially questionable because they place schools in the position of “pushing” soft drink consumption. “Pouring rights” contracts deserve attention from public health professionals concerned about the nutritional quality of children's diets. Imagesp308-ap313-a PMID:11059423

  8. Efficacy of alphacypermetrin pour-on against natural Werneckiella equi infestation on donkeys (Equus asinus).

    PubMed

    Veneziano, Vincenzo; Neglia, Gianluca; Galietti, Alfredo; Rufrano, Domenico; Bassini, Andrea; Mariani, Ugo; Gokbulut, Cengiz

    2012-09-01

    The chewing louse Werneckiella equi is an ectoparasite of donkeys and other equids. Alphacypermethrin (ACYP) is a pyrethroid insecticide commonly used for the control of insects of veterinary and public health concerns. A trial was conducted to assess the efficacy of ACYP against W. equi on naturally infested donkeys. Parasitological investigations were performed on 13 animals. On day 0, the donkeys received ACYP pour-on at the manufacturer's recommended dose rate for cattle. Louse counts were performed on days -1, 7, 14, 21, 28, 35, 42, 49, and 56 at seven predilection sites on the skin of each donkey. ACYP was completely effective (100 %) from day 7, until the end of the study. ACYP was well tolerated by all animals as there were no observed clinical adverse reactions. ACYP was highly effective, safe, user-friendly, and considered to be suitable for the treatment of donkeys for W. equi infestation.

  9. Lasers ''aquamarine" pour la spectroscopie de I{2} et la métrologie

    NASA Astrophysics Data System (ADS)

    Jacquemet, M.; Balembois, F.; Georges, P.; Ferrand, B.

    2006-10-01

    Nous présentons ici les performances de deux sources lasers monomodes longitudinales émettant dans le bleu-vert à 501,7 nm et visant des applications métrologiques et de spectroscopie de l'iode. Ces sources utilisent deux cristaux laser dopés ytterbium dont l'émission dans l'infrarouge est doublée en fréquence intracavité avec un cristal de KNbO3 pour émettre dans le visible. Les meilleures performances dans le visible sont obtenues avec un cristal de Yb:YSO produisant 60 mW à 501,7 nm. Le cristal de Yb:KYW permet lui l'émission simultanée de 35 mW de bleu-vert et de 500 mW d'infrarouge à 1003,4 nm.

  10. Une nouvelle voie pour la conception des implants intervertébraux

    NASA Astrophysics Data System (ADS)

    Gradel, T.; Tabourot, L.; Arrieux, R.; Balland, P.

    2002-12-01

    L'objectif de notre travail est la conception d'une nouvelle génération d'implants intersomatiques qui s'adapte parfaitement à la géométrie des plateaux vertébraux en se déformant. Pour cela, nous avons utilisé une nouvelle démarche qui consiste à simuler entièrement le procédé de fabrication en l'occurrence l'emboutissage, Cette simulation, en concervant l'historique des sollicitations exercées sur le matériau lors de sa mise en œuvre permet de valider très précisément sa résistance mécanique en fin de cycle. Au cours de cette étude, nous avons mené en parallèle deux analyses dites “ coopératives ” : l'une fondée sur un modèle phénoménologique de type HILL et l'autre sur un modèle multi-échelles prenant en compte des phénomènes plus physiques afin d'acquérir une bonne connaissance du comportement du matériau lors de la déformation. C'est pour sa bonne résistance, sa biocompatibilité et ses propriétés radiologiques que nous avons choisi le T40 (titane pur) comme matériau.

  11. Protocol design for mobile radio group communications over satellite

    NASA Astrophysics Data System (ADS)

    Leung, Victor C. M.

    1992-10-01

    The protocol design for a mobile radio service supporting half-duplex push-to-talk voice communications over mobile satellite systems is presented. Two types of protocols are considered, namely, a demand assignment multiple access protocol to assign channels only to those user groups in active sessions of conversations and a signaling protocol to arbitrate contentions among members of the same user group within an assigned channel. It is concluded that the proposed access control protocol makes it possible to improve the throughput capacity of the assigned channel by 65 or 18 percent compared to manual carrier-sensed access without or with collisoin detection, respectively.

  12. An Efficient Password Authenticated Key Exchange Protocol with Bilinear Parings

    NASA Astrophysics Data System (ADS)

    Ding, Xiaofei; Wei, Fushan; Ma, Chuangui; Chen, Shumin

    In recent years, many password authenticated key exchange (PAKE) protocols have been proposed. However, many of them have been broken or have no security proof. In this paper, we propose an efficient password authenticated key exchange protocol using bilinear pairings. Compared with previous PAKE protocol using bilinear pairings, our protocol is quite efficient both in communication cost and computational cost. Moreover, this paper proves that the novel protocol is forward secrecy under the Bilinear Diffie-Hellman (BDH) assumption in the random oracle model.

  13. Bell Inequalities, Experimental Protocols and Contextuality

    NASA Astrophysics Data System (ADS)

    Kupczynski, Marian

    2015-07-01

    In this paper we give additional arguments in favor of the point of view that the violation of Bell, CHSH and CH inequalities is not due to a mysterious non locality of nature. We concentrate on an intimate relation between a protocol of a random experiment and a probabilistic model which is used to describe it. We discuss in a simple way differences between attributive joint probability distributions and generalized joint probability distributions of outcomes from distant experiments which depend on how the pairing of these outcomes is defined. We analyze in detail experimental protocols implied by local realistic and stochastic hidden variable models and show that they are incompatible with the protocols used in spin polarization correlation experiments. We discuss also the meaning of "free will", differences between quantum and classical filters, contextuality of Kolmogorov models, contextuality of quantum theory (QT) and show how this contextuality has to be taken into account in probabilistic models trying to explain in an intuitive way the predictions of QT. The long range imperfect correlations between the clicks of distant detectors can be explained by partially preserved correlations between the signals created by a source. These correlations can only be preserved if the clicks are produced in a local and deterministic way depending on intrinsic parameters describing signals and measuring devices in the moment of the measurement. If an act of a measurement was irreducibly random they would be destroyed. It seems to indicate that QT may be in fact emerging from some underlying more detailed theory of physical phenomena. If this was a case then there is a chance to find in time series of experimental data some fine structures not predicted by QT. This would be a major discovery because it would not only prove that QT does not provide a complete description of individual physical systems but it would prove that it is not predictably complete.

  14. Towards a formalism for conversation protocols using joint intention theory

    SciTech Connect

    Kumar, Sanjeev; Huber, Marcus J.; Cohen, Philip R.; McGee, David R. )

    2001-12-01

    Conversation protocols are meant to achieve certain tasks or to bring about certain state of affairs in the world. Therefore, one may identify the landmarks or the state of affairs that must be brought about during the execution of a protocol in order to achieve its goal. Accordingly, the most important aspect of protocols is these landmarks rather than the communicative actions needed to achieve the landmarks. We show that families of conversation protocols can be expressed formally as partially ordered landmarks where each landmark is characterized by propositions that are true in the state represented by that landmark. Dialogue in natural languages is regarded as joint activity. Conversation protocols in multi-agent systems are treated as dialogue templates and are composed using speech acts from natural language dialogues. As such, we treat conversation protocols as joint action expressions and gainfully apply existing formal theories of dialogue, specifically the Joint Intention Theory, to protocols and their compositions. Conversation protocols may require agents to communicate with groups as well as individuals. However, most contemporary agent communication languages, notably FIPA and KQML, have either no provision or no well-defined semantics for group communication. Furthermore, the research on protocols so far does not correctly incorporate groups into the protocols. We give a formal semantics to group communicative acts and use it to handle group communication in a formal treatment of protocols.

  15. Efficient model checking of network authentication protocol based on SPIN

    NASA Astrophysics Data System (ADS)

    Tan, Zhi-hua; Zhang, Da-fang; Miao, Li; Zhao, Dan

    2013-03-01

    Model checking is a very useful technique for verifying the network authentication protocols. In order to improve the efficiency of modeling and verification on the protocols with the model checking technology, this paper first proposes a universal formalization description method of the protocol. Combined with the model checker SPIN, the method can expediently verify the properties of the protocol. By some modeling simplified strategies, this paper can model several protocols efficiently, and reduce the states space of the model. Compared with the previous literature, this paper achieves higher degree of automation, and better efficiency of verification. Finally based on the method described in the paper, we model and verify the Privacy and Key Management (PKM) authentication protocol. The experimental results show that the method of model checking is effective, which is useful for the other authentication protocols.

  16. Formal Analysis of Two Buyer-Seller Watermarking Protocols

    NASA Astrophysics Data System (ADS)

    Williams, David M.; Treharne, Helen; Ho, Anthony T. S.; Waller, Adrian

    In this paper we demonstrate how the formal model constructed in our previous work [1], can be modified in order to analyse additional Buyer-Seller Watermarking Protocols, identifying which specific sections of the CSP scripts remain identical and which require modification. First, we model the protocol proposed by Memon and Wong [2], an examplar of the Offline Watermarking Authority (OFWA) Model, defined in the framework by Poh and Martin [3]. Second, we model the Shao protocol [4] as an example of a protocol fitting the Online Watermarking Authority (ONWA) Model. Our analysis of the protocols reaffirms the unbinding attack described by Lei et al.[5] on the Memon and Wong protocol and we identify a new unbinding attack on the protocol proposed by Shao.

  17. A secure key agreement protocol based on chaotic maps

    NASA Astrophysics Data System (ADS)

    Wang, Xing-Yuan; Luan, Da-Peng

    2013-11-01

    To guarantee the security of communication in the public channel, many key agreement protocols have been proposed. Recently, Gong et al. proposed a key agreement protocol based on chaotic maps with password sharing. In this paper, Gong et al.'s protocol is analyzed, and we find that this protocol exhibits key management issues and potential security problems. Furthermore, the paper presents a new key agreement protocol based on enhanced Chebyshev polynomials to overcome these problems. Through our analysis, our key agreement protocol not only provides mutual authentication and the ability to resist a variety of common attacks, but also solve the problems of key management and security issues existing in Gong et al.'s protocol.

  18. SPP: A data base processor data communications protocol

    NASA Technical Reports Server (NTRS)

    Fishwick, P. A.

    1983-01-01

    The design and implementation of a data communications protocol for the Intel Data Base Processor (DBP) is defined. The protocol is termed SPP (Service Port Protocol) since it enables data transfer between the host computer and the DBP service port. The protocol implementation is extensible in that it is explicitly layered and the protocol functionality is hierarchically organized. Extensive trace and performance capabilities have been supplied with the protocol software to permit optional efficient monitoring of the data transfer between the host and the Intel data base processor. Machine independence was considered to be an important attribute during the design and implementation of SPP. The protocol source is fully commented and is included in Appendix A of this report.

  19. An Gen2 Based Security Authentication Protocol for RFID System

    NASA Astrophysics Data System (ADS)

    Yi, Xiaoluo; Wang, Liangmin; Mao, Dongmei; Zhan, Yongzhao

    EPC Class-1 Generation-2 specification(Gen2 in brief) has been accepted as the standard for RFID tags under grant number ISO18000-6C. However, Gen2 does not pay due attention to security. For this reason, a Gen2 based security authentication protocol is developed in this paper. In details, we study the security requirements presented in the current Gen2 based RFID authentication protocols[7-13]. Then we point out the security flaws of Chien's mutual authentication protocol[7], and improve the protocol based on a 11 security requirements. Our improved protocol merely uses CRC and PRNG operations supported by Gen2 and meets the 11 security requirements. In contrast to the similar work [14,15] on Chien's protocol or other Gen2 based schemes, our protocol is more secure and our security analysis is much more comprehensive and qualitative.

  20. Protocol for aquatic hazard assessment of selenium

    SciTech Connect

    Lemly, A.D.

    1995-05-24

    A procedure is described for conducting an aquatic hazard assessment of selenium. Hazard is characterized in terms of the potential for food-chain bioaccumulation and reproductive impairment in fish and aquatic birds, which are the most sensitive biological responses for estimating ecosystem-level impacts of selenium contamination. Five degrees of hazard are possible depemding on the expected environmental concentrations of selenium, exposure of fish and aquatic birds to toxic concentrations, and resultant potential for reproductive impairment. An example is given to illustrate how the protocol is applied to selenium data from a typical contaminant monitoring program.

  1. 2014 Building America House Simulation Protocols

    SciTech Connect

    Wilson, E.; Engebrecht, C. Metzger; Horowitz, S.; Hendron, R.

    2014-03-01

    As Building America has grown to include a large and diverse cross-section of the home building and retrofit industries, it has become more important to develop accurate, consistent analysis techniques to measure progress towards the program's goals. The House Simulation Protocol (HSP) document provides guidance to program partners and managers so they can compare energy savings for new construction and retrofit projects. The HSP provides the program with analysis methods that are proven to be effective and reliable in investigating the energy use of advanced energy systems and of entire houses.

  2. 2014 Building America House Simulation Protocols

    SciTech Connect

    Wilson, E.; Engebrecht-Metzger, C.; Horowitz, S.; Hendron, R.

    2014-03-01

    As BA has grown to include a large and diverse cross-section of the home building and retrofit industries, it has become more important to develop accurate, consistent analysis techniques to measure progress towards the program's goals. The House Simulation Protocol (HSP) document provides guidance to program partners and managers so they can compare energy savings for new construction and retrofit projects. The HSP provides the program with analysis methods that are proven to be effective and reliable in investigating the energy use of advanced energy systems and of entire houses.

  3. Modelisation de photodetecteurs a base de matrices de diodes avalanche monophotoniques pour tomographie d'emission par positrons

    NASA Astrophysics Data System (ADS)

    Corbeil Therrien, Audrey

    La tomographie d'emission par positrons (TEP) est un outil precieux en recherche preclinique et pour le diagnostic medical. Cette technique permet d'obtenir une image quantitative de fonctions metaboliques specifiques par la detection de photons d'annihilation. La detection des ces photons se fait a l'aide de deux composantes. D'abord, un scintillateur convertit l'energie du photon 511 keV en photons du spectre visible. Ensuite, un photodetecteur convertit l'energie lumineuse en signal electrique. Recemment, les photodiodes avalanche monophotoniques (PAMP) disposees en matrice suscitent beaucoup d'interet pour la TEP. Ces matrices forment des detecteurs sensibles, robustes, compacts et avec une resolution en temps hors pair. Ces qualites en font un photodetecteur prometteur pour la TEP, mais il faut optimiser les parametres de la matrice et de l'electronique de lecture afin d'atteindre les performances optimales pour la TEP. L'optimisation de la matrice devient rapidement une operation difficile, car les differents parametres interagissent de maniere complexe avec les processus d'avalanche et de generation de bruit. Enfin, l'electronique de lecture pour les matrices de PAMP demeure encore rudimentaire et il serait profitable d'analyser differentes strategies de lecture. Pour repondre a cette question, la solution la plus economique est d'utiliser un simulateur pour converger vers la configuration donnant les meilleures performances. Les travaux de ce memoire presentent le developpement d'un tel simulateur. Celui-ci modelise le comportement d'une matrice de PAMP en se basant sur les equations de physique des semiconducteurs et des modeles probabilistes. Il inclut les trois principales sources de bruit, soit le bruit thermique, les declenchements intempestifs correles et la diaphonie optique. Le simulateur permet aussi de tester et de comparer de nouvelles approches pour l'electronique de lecture plus adaptees a ce type de detecteur. Au final, le simulateur vise a

  4. Realisation de guides d'onde plans faibles pertes en nitrure de silicium pour un biocapteur integre

    NASA Astrophysics Data System (ADS)

    Gorin, Arnaud

    Le nitrure de silicium est un materiau tres utilise en microelectronique et en optique integree due a l'excellente homogeneite et reproductibilite de son epaisseur et de son indice de refraction. De plus, l'indice de refraction eleve du nitrure de silicium est particulierement interessant pour les applications en biophotonique. En effet, ces dernieres annees les biocapteurs a champ evanescent ont demontre une augmentation de la sensibilite avec l'utilisation de guides d'onde plans a haut indice de refraction. La sensibilite pourrait etre encore amelioree en integrant sur un meme substrat l'ensemble des composants passifs et actifs (Lab-on-a-chip) qui composent le biocapteur a champ evanescent. L'integration des differents composants optiques passe par la fabrication d'un guide d'onde plan dans le visible qui soit realise avec des procedes a basse temperature, faible epaisseur, faible perte et haut indice de refraction. Meme si les couches d'oxyde metallique (TiO2, Ta2O5 par exemple), generalement utilisees pour ce type d'application, permettent d'obtenir de bonnes proprietes optiques, elles ne permettent pas d'atteindre la qualite des couches en nitrure de silicium notamment en termes de rugosite de surface pour de faibles epaisseurs. Dans le cadre de ces travaux de doctorat, les parametres du guide d'onde sont optimises pour une application utilisant des fluorophores a points quantiques emettant a 650 nm et excites avec une source laser a 532 nm. Une epaisseur de 80 nm est determinee comme optimale pour l'excitation, la collection de la fluorescence et le couplage fibre-guide. Le developpement d'un guide d'onde capable d'atteindre cette epaisseur et conservant des bonnes proprietes optiques est necessaire. A notre connaissance aucun travail n'a ete realise pour optimiser les pertes dans le visible des guides de nitrure de silicium, en fonction des parametres du procede PECVD. Dans ce travail de these, des guides d'onde sont fabriques pour la premiere fois en

  5. A Contextuality Based Quantum Key Distribution Protocol

    NASA Astrophysics Data System (ADS)

    Troupe, James

    In 2005 Spekkens presented a generalization of noncontextuality that applies to imperfect measurements (POVMs) by allowing the underlying hidden variable model to be indeterministic. In addition, unlike traditional Bell-Kochen-Specker noncontextuality, HV models of a single qubit were shown to be contextual under this definition. Thus, not all single qubit POVM measurement outcomes can be modeled classically. Recently M. Pusey showed that, under certain conditions, exhibiting an anomalous weak value (i.e. values outside the eigenspectrum of the observable) implies contextuality. We will present a new single qubit prepare and measure QKD protocol that uses observation of anomalous weak values of particular observables to estimate the quantum channel error rate and certify the security of the channel. We also argue that it is the ``degree'' of contextuality of the noisy qubits exiting the channel that fundamentally determine the secure key rate. A benefit of this approach is that the security does not depend on the fair sampling assumption, and so is not compromised by Eve controlling Bob's measurement devices. Thus, it retains much of the benefit of ``Measurement Device Independent'' QKD protocols while only using single photon preparations and measurements. Supported by the Office of Naval Research under Grant N00014-15-1-2225.

  6. Research Protocol: Collections Related to Synthetic Turf ...

    EPA Pesticide Factsheets

    The “Federal Research Action Plan on Recycled Tire Crumb Used on Playing Fields and Playgrounds” (referred to subsequently as the Federal Research Action Plan or FRAP) was finalized in February 2016. The U.S. EPA and CDC/ATSDR, in collaboration with CPSC, have prepared this research protocol to implement portions of the research activities outlined under the FRAP. Specifically, this research protocol is designed to implement three of the research elements described in the Federal Research Action Plan: Conduct a literature review and data gaps analysis; Perform tire crumb rubber characterization research; Perform human exposure characterization research. Concerns have been raised by the public about the safety of recycled tire crumb rubber used in synthetic turf fields and playgrounds in the United States. Several studies have been identified that examine exposure to tire crumb rubber infill in these settings. While, in general, these studies have not provided evidence for these health concerns, the existing studies do not comprehensively evaluate all aspects of exposure associated with these use scenarios. Additional research is needed to help fill important data gaps that will lead to improved exposure assessment and risk evaluation for children and adults using synthetic turf fields and playgrounds with tire crumb rubber. In response, the U.S. Environmental Protection Agency (EPA), the Centers for Disease Control and Prevention/Agency for Toxic Su

  7. Internet Protocol Enhanced over Satellite Networks

    NASA Technical Reports Server (NTRS)

    Ivancic, William D.

    1999-01-01

    Extensive research conducted by the Satellite Networks and Architectures Branch of the NASA Lewis Research Center led to an experimental change to the Internet's Transmission Control Protocol (TCP) that will increase performance over satellite channels. The change raises the size of the initial burst of data TCP can send from 1 packet to 4 packets or roughly 4 kilobytes (kB), whichever is less. TCP is used daily by everyone on the Internet for e-mail and World Wide Web access, as well as other services. TCP is one of the feature protocols used in computer communications for reliable data delivery and file transfer. Increasing TCP's initial data burst from the previously specified single segment to approximately 4 kB may improve data transfer rates by up to 27 percent for very small files. This is significant because most file transfers in wide-area networks today are small files, 4 kilobytes or less. In addition, because data transfers over geostationary satellites can take 5 to 20 times longer than over typical terrestrial connections, increasing the initial burst of data that can be sent is extremely important. This research along with research from other institutions has led to the release of two new Request for Comments from the Internet Engineering Task Force (IETF, the international body that sets Internet standards). In addition, two studies of the implications of this mechanism were also funded by NASA Lewis.

  8. A high performance totally ordered multicast protocol

    NASA Technical Reports Server (NTRS)

    Montgomery, Todd; Whetten, Brian; Kaplan, Simon

    1995-01-01

    This paper presents the Reliable Multicast Protocol (RMP). RMP provides a totally ordered, reliable, atomic multicast service on top of an unreliable multicast datagram service such as IP Multicasting. RMP is fully and symmetrically distributed so that no site bears un undue portion of the communication load. RMP provides a wide range of guarantees, from unreliable delivery to totally ordered delivery, to K-resilient, majority resilient, and totally resilient atomic delivery. These QoS guarantees are selectable on a per packet basis. RMP provides many communication options, including virtual synchrony, a publisher/subscriber model of message delivery, an implicit naming service, mutually exclusive handlers for messages, and mutually exclusive locks. It has commonly been held that a large performance penalty must be paid in order to implement total ordering -- RMP discounts this. On SparcStation 10's on a 1250 KB/sec Ethernet, RMP provides totally ordered packet delivery to one destination at 842 KB/sec throughput and with 3.1 ms packet latency. The performance stays roughly constant independent of the number of destinations. For two or more destinations on a LAN, RMP provides higher throughput than any protocol that does not use multicast or broadcast.

  9. Chapter 18: Variable Frequency Drive Evaluation Protocol

    SciTech Connect

    Romberger, J.

    2014-11-01

    An adjustable-speed drive (ASD) includes all devices that vary the speed of a rotating load, including those that vary the motor speed and linkage devices that allow constant motor speed while varying the load speed. The Variable Frequency Drive Evaluation Protocol presented here addresses evaluation issues for variable-frequency drives (VFDs) installed on commercial and industrial motor-driven centrifugal fans and pumps for which torque varies with speed. Constant torque load applications, such as those for positive displacement pumps, are not covered by this protocol. Other ASD devices, such as magnetic drive, eddy current drives, variable belt sheave drives, or direct current motor variable voltage drives, are also not addressed. The VFD is by far the most common type of ASD hardware. With VFD speed control on a centrifugal fan or pump motor, energy use follows the affinity laws, which state that the motor electricity demand is a cubic relationship to speed under ideal conditions. Therefore, if the motor runs at 75% speed, the motor demand will ideally be reduced to 42% of full load power; however, with other losses it is about 49% of full load power.

  10. Advantages of a leveled commitment contracting protocol

    SciTech Connect

    Sandholm, T.W.; Lesser, V.R.

    1996-12-31

    In automated negotiation systems consisting of self-interested agents, contracts have traditionally been binding. Such contracts do not allow agents to efficiently accommodate future events. Game theory has proposed contingency contracts to solve this problem. Among computational agents, contingency contracts are often impractical due to large numbers of interdependent and unanticipated future events to be conditioned on, and because some events are not mutually observable. This paper proposes a leveled commitment contracting protocol that allows self-interested agents to efficiently accommodate future events by having the possibility of unilaterally decommitting from a contract based on local reasoning. A decommitment penalty is assigned to both agents in a contract: to be freed from the contract, an agent only pays this penalty to the other party. It is shown through formal analysis of several contracting settings that this leveled commitment feature in a contracting protocol increases Pareto efficiency of deals and can make contracts individually rational when no full commitment contract can. This advantage holds even if the agents decommit manipulatively.

  11. Protocol for cardiac assessment of recreational athletes.

    PubMed

    Chinea, Ana M; Lollett, Carlos; Herrera, Hector; Passariello, Gianfranco; Wong, Sara

    2012-01-01

    In this work, the development of a database on physical fitness is presented. As initial population to fill this database, people who practice recreational sports at the Universidad Simon Bolivar (USB) were chosen. The goal was studying individual physical fitness in order to structure exercise routines that gives certain benefits without risking the individual health, promoting a less sedentary way of life. Before the study, a low-cost noninvasive protocol was designed to determine the level of physical fitness. The methodology consisted of four steps: a) A review of existing protocols to propose a set of physical fitness (International Physical Activity Questionnaire (IPAQ)), cardiovascular (heart rate variability, heart rate recovery time and arterial blood pressure), anthropomorphic, aerobic (maximum oxygen consumption) and mood state (Profile of Mood State (POMS)) measurements, which allow sketching a complete profile on the sportsman physical fitness. b) Instrumental data collection. c) Electrocardiographic signal processing. d) Data post-processing using multivariate analysis. The database was composed of 26 subject from USB. Ten subjects were soccer players, ten were mountain climbers and six were sedentary people. Results showed that the heart rate recover time after 2-3 min, IPAQ and maximum oxygen consumption have higher weights for classifying individuals according to their habitual physical activity. Heart rate variability, as well as, POMS did not contribute greatly for discriminating recreational sport from sedentary persons.

  12. La diffraction des neutrons et des rayons X pour l'étude structurale des liquides et des verres

    NASA Astrophysics Data System (ADS)

    Fischer, H. E.; Salmon, P. S.; Barnes, A. C.

    2003-02-01

    La compréhension de mainte propriété physique d'un verre ou d'un liquide nécessite la connaissance des facteurs de structure partiels (PSFs) qui décrivent chacun la distribution d'une espèce atomique autour d'une autre. La technique de diffraction des neutrons avec substitution isotopique (NDIS) [1,2,3], ayant bien réussi a déterminer les PSFs de certains composés [4,5], est pourtant restreinte aux isotopes présentant un contraste suffisant en longueur de diffusion. D'un autre cote, la technique de diffusion anomale des rayons X (AXS ou AXD) [6] permet de faire varier la longueur de diffusion d'une espèce atomique pourvu que son énergie d'absorption soit à la fois accessible et suffisamment élevée pour donner un assez grand transfert du moment. La combinaison des techniques de diffraction des neutrons (avec ou sans substitution isotopique) et de diffraction des rayons X (avec ou sans diffusion anomale) peut donc permettre d'obtenir un meilleur contraste en longueurs de diffusion pour un système donné, mais exige une analyse de données plus soignée pour pouvoir bien tenir compte des erreurs systématiques qui sont différentes pour les 2 techniques [7]. Pour les atomes ayant des distributions électroniques quasi-sphériques, e.g. dans le cas d'un alliage liquide, la combinaison des techniques de NDIS et de diffraction des rayons X s'est déjà montrée très avantageuse pour la détermination des PSFs [8,9]. Dans le cas des verres ayant d'importantes liaisons covalentes, l'effective combinaison des 2 techniques peut être moins directe mais facilitée lorsqu'il s'agit des atomes de grand Z [10,11]. Nous présentons ici un sommaire du méthode et quelques exemples des résultats.

  13. Detectability of testosterone esters and estradiol benzoate in bovine hair and plasma following pour-on treatment.

    PubMed

    Stolker, A A M; Groot, M J; Lasaroms, J J P; Nijrolder, A W J M; Blokland, M H; Riedmaier, I; Becker, C; Meyer, H H D; Nielen, M W F

    2009-10-01

    The abuse of synthetic esters of natural steroids such as testosterone and estradiol in cattle fattening and sports is hard to detect via routine urine testing. The esters are rapidly hydrolysed in vivo into substances which are also endogenously present in urine. An interesting alternative can be provided by the analysis of the administered synthetic steroids themselves, i.e., the analysis of intact steroid esters in hair by liquid chromatography tandem mass spectrometry (LC/MS/MS). However, retrospective estimation of the application date following a non-compliant finding is hindered by the complexity of the kinetics of the incorporation of steroid esters in hair. In this study, the incorporation of intact steroid esters in hair following pour-on treatment has been studied and critically compared with results from intramuscular treatment. To this end animals were pour-on treated with a hormone cocktail containing testosterone cypionate, testosterone decanoate and estradiol benzoate in different carriers. The animals were either treated using injection and pour-on application once or three times having 1 week between treatments using injection and pour-on application. Animals were slaughtered from 10-12 weeks after the last treatment. Both hair and blood plasma samples were collected and analysed by LC/MS/MS. From the results, it is concluded that after single treatment the levels of steroid esters in hair drop to CCbeta levels (5-20 microg/kg) after 5-7 weeks. When treatment is repeated two times, the CCbeta levels are reached after 9-11 weeks. Furthermore, in plasma, no steroid esters were detected; not even at the low microgramme per litre level but--in contrast with the pour-on application--after i.m. injection, significant increase of 17beta-testosterone and 17beta-estradiol were observed. These observations suggest that transport of steroid esters after pour-on application is not only performed by blood but also by alternative fluids in the animal so

  14. OIL SPILL DISPERSANT EFFECTIVENESS PROTOCOL. II: PERFORMANCE OF THE REVISED PROTOCOL

    EPA Science Inventory

    The current U.S. Environmental Protection Agency (EPA) protocol for testing the effectiveness of dispersants for use in treating oil spills on the open water, the swirling flask test (SFT), has been found to give widely varying results in the hands of different testing laborator...

  15. Unified Protocol for the Transdiagnostic Treatment of Emotional Disorders: Protocol Development and Initial Outcome Data

    ERIC Educational Resources Information Center

    Ellard, Kristen K.; Fairholme, Christopher P.; Boisseau, Christina L.; Farchione, Todd J.; Barlow, David H.

    2010-01-01

    The Unified Protocol (UP) is a transdiagnostic, emotion-focused cognitive-behavioral treatment developed to be applicable across the emotional disorders. The UP consists of 4 core modules: increasing emotional awareness, facilitating flexibility in appraisals, identifying and preventing behavioral and emotional avoidance, and situational and…

  16. A Survey on Underwater Acoustic Sensor Network Routing Protocols

    PubMed Central

    Li, Ning; Martínez, José-Fernán; Meneses Chaus, Juan Manuel; Eckert, Martina

    2016-01-01

    Underwater acoustic sensor networks (UASNs) have become more and more important in ocean exploration applications, such as ocean monitoring, pollution detection, ocean resource management, underwater device maintenance, etc. In underwater acoustic sensor networks, since the routing protocol guarantees reliable and effective data transmission from the source node to the destination node, routing protocol design is an attractive topic for researchers. There are many routing algorithms have been proposed in recent years. To present the current state of development of UASN routing protocols, we review herein the UASN routing protocol designs reported in recent years. In this paper, all the routing protocols have been classified into different groups according to their characteristics and routing algorithms, such as the non-cross-layer design routing protocol, the traditional cross-layer design routing protocol, and the intelligent algorithm based routing protocol. This is also the first paper that introduces intelligent algorithm-based UASN routing protocols. In addition, in this paper, we investigate the development trends of UASN routing protocols, which can provide researchers with clear and direct insights for further research. PMID:27011193

  17. The Quantum Steganography Protocol via Quantum Noisy Channels

    NASA Astrophysics Data System (ADS)

    Wei, Zhan-Hong; Chen, Xiu-Bo; Niu, Xin-Xin; Yang, Yi-Xian

    2015-08-01

    As a promising branch of quantum information hiding, Quantum steganography aims to transmit secret messages covertly in public quantum channels. But due to environment noise and decoherence, quantum states easily decay and change. Therefore, it is very meaningful to make a quantum information hiding protocol apply to quantum noisy channels. In this paper, we make the further research on a quantum steganography protocol for quantum noisy channels. The paper proved that the protocol can apply to transmit secret message covertly in quantum noisy channels, and explicity showed quantum steganography protocol. In the protocol, without publishing the cover data, legal receivers can extract the secret message with a certain probability, which make the protocol have a good secrecy. Moreover, our protocol owns the independent security, and can be used in general quantum communications. The communication, which happen in our protocol, do not need entangled states, so our protocol can be used without the limitation of entanglement resource. More importantly, the protocol apply to quantum noisy channels, and can be used widely in the future quantum communication.

  18. A Survey on Underwater Acoustic Sensor Network Routing Protocols.

    PubMed

    Li, Ning; Martínez, José-Fernán; Meneses Chaus, Juan Manuel; Eckert, Martina

    2016-03-22

    Underwater acoustic sensor networks (UASNs) have become more and more important in ocean exploration applications, such as ocean monitoring, pollution detection, ocean resource management, underwater device maintenance, etc. In underwater acoustic sensor networks, since the routing protocol guarantees reliable and effective data transmission from the source node to the destination node, routing protocol design is an attractive topic for researchers. There are many routing algorithms have been proposed in recent years. To present the current state of development of UASN routing protocols, we review herein the UASN routing protocol designs reported in recent years. In this paper, all the routing protocols have been classified into different groups according to their characteristics and routing algorithms, such as the non-cross-layer design routing protocol, the traditional cross-layer design routing protocol, and the intelligent algorithm based routing protocol. This is also the first paper that introduces intelligent algorithm-based UASN routing protocols. In addition, in this paper, we investigate the development trends of UASN routing protocols, which can provide researchers with clear and direct insights for further research.

  19. Three-step semiquantum secure direct communication protocol

    NASA Astrophysics Data System (ADS)

    Zou, XiangFu; Qiu, DaoWen

    2014-09-01

    Quantum secure direct communication is the direct communication of secret messages without need for establishing a shared secret key first. In the existing schemes, quantum secure direct communication is possible only when both parties are quantum. In this paper, we construct a three-step semiquantum secure direct communication (SQSDC) protocol based on single photon sources in which the sender Alice is classical. In a semiquantum protocol, a person is termed classical if he (she) can measure, prepare and send quantum states only with the fixed orthogonal quantum basis {|0>, |1>}. The security of the proposed SQSDC protocol is guaranteed by the complete robustness of semiquantum key distribution protocols and the unconditional security of classical one-time pad encryption. Therefore, the proposed SQSDC protocol is also completely robust. Complete robustness indicates that nonzero information acquired by an eavesdropper Eve on the secret message implies the nonzero probability that the legitimate participants can find errors on the bits tested by this protocol. In the proposed protocol, we suggest a method to check Eves disturbing in the doves returning phase such that Alice does not need to announce publicly any position or their coded bits value after the photons transmission is completed. Moreover, the proposed SQSDC protocol can be implemented with the existing techniques. Compared with many quantum secure direct communication protocols, the proposed SQSDC protocol has two merits: firstly the sender only needs classical capabilities; secondly to check Eves disturbing after the transmission of quantum states, no additional classical information is needed.

  20. Recommandations pour le dépistage de l’hypertension chez les adultes canadiens

    PubMed Central

    Lindsay, Patrice; Gorber, Sarah Connor; Joffres, Michel; Birtwhistle, Richard; McKay, Donald; Cloutier, Lyne

    2013-01-01

    Résumé Objectif Présenter des recommandations concernant le dépistage de l’hypertension chez les adultes de 18 ans et plus qui n’ont pas reçu antérieurement de diagnostic d’hypertension. Qualité des données Les données probantes sont tirées d’une recension systématique dans MEDLINE, EMBASE et la base de données des synthèses systématiques de la Collaboration Cochrane (EBM Reviews), de janvier 1985 à septembre 2011. Les types d’études retenues se limitaient aux études randomisées contrôlées, aux synthèses systématiques et aux études observationnelles avec groupes témoins. Message principal Trois fortes recommandations se sont dégagées de données probantes de qualité modérée. Il est recommandé de mesurer la pression artérielle à toutes les consultations appropriées en soins primaires, conformément aux techniques actuelles décrites dans les recommandations du Programme éducatif canadien sur l’hypertension pour la mesure de la pression artérielle en cabinet et en soins ambulatoires. Les critères du Programme éducatif canadien sur l’hypertension pour l’évaluation et le diagnostic de l’hypertension devraient s’appliquer aux personnes chez qui on observe une pression artérielle élevée. Conclusion À la suite d’un examen des plus récentes données probantes, le Groupe d’étude canadien sur les soins de santé préventifs continue de recommander la mesure de la pression artérielle lors des consultations périodiques auprès du médecin.

  1. Realisation d'un detecteur de radioactivite pour un systeme microfluidique

    NASA Astrophysics Data System (ADS)

    Girard Baril, Frederique

    Pour etablir le comportement pharmacocinetique de nouveaux radiotraceurs en imagerie moleculaire, il est necessaire d'approfondir l'analyse realisee a partir d'une image par l'ajout d'une mesure dynamique de la radioactivite dans le sang. L'Universite de Sherbrooke developpe presentement une plateforme microfluidique d'echantillonnage et d'analyse permettant la mesure de la radioactivite du plasma en temps reel. L'objectif du present projet de maitrise etait de realiser le composant optoelectronique responsable de la detection des positrons et de l'integrer a la puce microfluidique. L'option retenue a ete l'utilisation de photodiodes PIN en silicium. Un procede de fabrication, ainsi qu'une serie de photomasques ont ete developpes afin de produire une premiere iteration de prototypes. Les detecteurs ont ete concus de maniere a optimiser leur sensibilite en fonction du type de rayonnement a detecter. En effet, la region de detection doit etre suffisamment epaisse et sensible pour absorber le maximum de particules energetiques. Egalement, il est essentiel de minimiser le courant de fuite en noirceur afin d'obtenir un photocourant directement proportionnel a l'energie des radiations incidentes. Les caracteristiques electriques obtenues avec les premiers detecteurs ont ete demontrees proches des performances de detecteurs commerciaux similaires. De plus, il a ete possible d'integrer un canal microfluidique au substrat contenant les photodiodes et d'en realiser l'encapsulation sans alterer les performances electriques initiales des detecteurs. Une courbe de l'activite radioactive du 18F a ete mesuree, celle-ci se comparant a l'activite theorique associee a ce radioisotope communement utilise en TEP. Enfin, un spectre en energie des emissions radiatives du 18F a ete mesure et compare aux performances de systemes utilisant des photodiodes commerciales. Il a ete demontre que le prototype offrait un rapport signal sur bruit similaire aux systemes bases sur des photodiodes

  2. Êtes-vous prêt pour un code bleu en cabinet?

    PubMed Central

    Moore, Simon

    2015-01-01

    Résumé Problème traité Les urgences médicales sont fréquentes dans le cabinet des médecins de famille, mais nombreux sont ceux qui ne sont pas préparés à répondre aux urgences. Une vidéo éducative en ligne traitant des urgences en cabinet pourrait améliorer la réponse des médecins et de leur personnel aux urgences. Un outil comme celui-là n’a jamais été décrit auparavant. Objectif du programme Utiliser les pratiques fondées sur les données probantes pour produire une vidéo éducative expliquant comment se préparer à parer à une urgence dans un cabinet médical, disséminer la vidéo en ligne et évaluer l’attitude des médecins et de leur personnel à l’égard de la vidéo. Description du programme Une vidéo de 6 minutes a été produite en s’appuyant sur une revue de la littérature récente et des politiques des organismes réglementaires canadiens. La vidéo décrit l’équipement d’urgence recommandé, l’amélioration de la réponse à l’urgence et la formation du personnel en cabinet. Les médecins et leur personnel ont été invités à visualiser la vidéo en ligne à www.OfficeEmergencies.ca. L’opinion de l’auditoire sur le format de la vidéo et son contenu a été évaluée par l’entremise d’un sondage (N = 275). Conclusion Les résultats du sondage indiquent que la vidéo était pertinente et bien présentée, et le format en ligne était pratique et satisfaisant. Les participants s’inscriraient à d’autres formations ayant recours à cette technologie et étaient d’accord pour dire que ce programme améliorerait les soins aux patients.

  3. New Routing Metrics for ADHOC Network Routing Protocols

    NASA Astrophysics Data System (ADS)

    Reddy, P. C.

    2014-12-01

    The performance and reliability of Internet is measured using different quantities. When the quantities measured are essential and have wide range of acceptance then they are called metrics. Performance metrics enable comparison and selection among the alternatives. In computer networks, metrics are used to evaluate an application, protocol etc. Routing in adhoc networks is nontrivial. Routing protocols for adhoc networks are still evolving and there is need for continuous evaluation of them. In the literature existing, several routing protocols are evaluated using standard metrics under different conditions. This paper proposes new metrics for evaluation of routing protocols and uses them to evaluate the adhoc network routing protocols AODV, DSR, DSDV and TORA. Simulation environment is created using NS-2 simulator. Typical range of speeds, pause times and data rates are used. The results provide new insights in to the working of the routing protocols.

  4. Use of YouScope to implement systematic microscopy protocols.

    PubMed

    Lang, Moritz; Rudolf, Fabian; Stelling, Jörg

    2012-04-01

    Complex microscopy protocols, e.g., to dynamically track multiple signals in living cells under different conditions, are becoming more common. However, the implementation of complex protocols on modern, motorized microscopes often requires their reformulation into low-level machine language. This recoding is a time-consuming and error-prone task that often requires advanced programming skills. This unit describes how to use the high level, open-source microscope control platform YouScope to implement complex measurement protocols. Three protocols detail how to install and configure YouScope on a motorized microscope, how to use YouScope to quickly assess the quality of a sample, and how to set up imaging protocols for cells in a microplate. In addition to these protocols, descriptions are given for the use of various other tools YouScope provides to successfully accomplish various microscopy tasks.

  5. Synthesizing Existing CSMA and TDMA Based MAC Protocols for VANETs

    PubMed Central

    Huang, Jiawei; Li, Qi; Zhong, Shaohua; Liu, Lianhai; Zhong, Ping; Wang, Jianxin; Ye, Jin

    2017-01-01

    Many Carrier Sense Multiple Access (CSMA) and Time Division Multiple Access (TDMA) based medium access control (MAC) protocols for vehicular ad hoc networks (VANETs) have been proposed recently. Contrary to the common perception that they are competitors, we argue that the underlying strategies used in these MAC protocols are complementary. Based on this insight, we design CTMAC, a MAC protocol that synthesizes existing strategies; namely, random accessing channel (used in CSMA-style protocols) and arbitral reserving channel (used in TDMA-based protocols). CTMAC swiftly changes its strategy according to the vehicle density, and its performance is better than the state-of-the-art protocols. We evaluate CTMAC using at-scale simulations. Our results show that CTMAC reduces the channel completion time and increases the network goodput by 45% for a wide range of application workloads and network settings. PMID:28208590

  6. Synthesizing Existing CSMA and TDMA Based MAC Protocols for VANETs.

    PubMed

    Huang, Jiawei; Li, Qi; Zhong, Shaohua; Liu, Lianhai; Zhong, Ping; Wang, Jianxin; Ye, Jin

    2017-02-10

    Many Carrier Sense Multiple Access (CSMA) and Time Division Multiple Access (TDMA) based medium access control (MAC) protocols for vehicular ad hoc networks (VANETs) have been proposed recently. Contrary to the common perception that they are competitors, we argue that the underlying strategies used in these MAC protocols are complementary. Based on this insight, we design CTMAC, a MAC protocol that synthesizes existing strategies; namely, random accessing channel (used in CSMA-style protocols) and arbitral reserving channel (used in TDMA-based protocols). CTMAC swiftly changes its strategy according to the vehicle density, and its performance is better than the state-of-the-art protocols. We evaluate CTMAC using at-scale simulations. Our results show that CTMAC reduces the channel completion time and increases the network goodput by 45% for a wide range of application workloads and network settings.

  7. A Secure RFID Authentication Protocol Adopting Error Correction Code

    PubMed Central

    Zheng, Xinying; Chen, Pei-Yu

    2014-01-01

    RFID technology has become popular in many applications; however, most of the RFID products lack security related functionality due to the hardware limitation of the low-cost RFID tags. In this paper, we propose a lightweight mutual authentication protocol adopting error correction code for RFID. Besides, we also propose an advanced version of our protocol to provide key updating. Based on the secrecy of shared keys, the reader and the tag can establish a mutual authenticity relationship. Further analysis of the protocol showed that it also satisfies integrity, forward secrecy, anonymity, and untraceability. Compared with other lightweight protocols, the proposed protocol provides stronger resistance to tracing attacks, compromising attacks and replay attacks. We also compare our protocol with previous works in terms of performance. PMID:24959619

  8. Etude d'un systeme de recuperation et de stockage de chaleur pour un systeme eolien-diesel avec stockage d'air comprime

    NASA Astrophysics Data System (ADS)

    Remillon, Thibaut

    La recherche presentee dans ce memoire porte sur les systemes hybrides eolien-diesel avec stockage d'air comprime (SHEDAC) adaptes a la production d'electricite en sites isoles, et plus precisement sur l'apport d'un systeme de recuperation et de stockage de chaleur (TES) au fonctionnement de ces systemes. Le principe de fonctionnement est le suivant. Quand la puissance eolienne est excedentaire par rapport aux besoins de la charge, le surplus d'energie est utilise pour comprimer de l'air. De ce processus resulte un rechauffement de l'air, on choisit d'extraire et de stocker la chaleur separement. Lors de la phase de restitution d'energie, l'air comprime utilise pour suralimenter le moteur thermique est rechauffe en utili sant la chaleur stockee precedemment. Tout au long de l'etude, nous avons seulement pris en compte la chaleur provenant du processus de compression de l'air, et neglige en tous points du systeme les echanges de chaleur avec le milieu exterieur. Pour quantifier l'apport du systeme de stockage de chaleur, nous avons tout d'abord mene une etude bibliographique sur ces systemes, pour identifier les meilleures solutions disponibles. Ensuite, on a modelise une de ces solutions sous Simulink pour etudier son fonctionnement de maniere plus precise. D'autre part, on a modelise un systeme de stockage de chaleur ideal pour quantifier l'apport maximal d'un TES sur les performances du SHEDAC. Nous avons conclu que les TES les plus adaptes aux systemes SHEDAC etaient les solutions actives directes a deux reservoirs, et que, pour beneficier au maximum du systeme de stockage de chaleur, il etait interessant de realiser la detente de l'air comprime stocke dans un moteur a air comprime, pour maximiser la recuperation d'energie mecanique.

  9. 2010 Coalition Battle Management Language Workshop (Atelier 2010 sur le langage de gestion du champ de bataille pour les operations en coalition)

    DTIC Science & Technology

    2010-02-01

    Feb 2010 2010 Coalition Battle Management Language Workshop (Atelier 2010 sur le langage de gestion du champ de bataille pour les opérations en...RTO MEETING PROCEEDINGS MP-MSG-079 2010 Coalition Battle Management Language Workshop (Atelier 2010 sur le langage de gestion du champ de...RTO-MP-MSG-079 ES - 3 Atelier 2010 sur le langage de gestion du champ de bataille pour les opérations en coalition (RTO-MP-MSG-079

  10. Protocols for Handling Messages Between Simulation Computers

    NASA Technical Reports Server (NTRS)

    Balcerowski, John P.; Dunnam, Milton

    2006-01-01

    Practical Simulator Network (PSimNet) is a set of data-communication protocols designed especially for use in handling messages between computers that are engaging cooperatively in real-time or nearly-real-time training simulations. In a typical application, computers that provide individualized training at widely dispersed locations would communicate, by use of PSimNet, with a central host computer that would provide a common computational- simulation environment and common data. Originally intended for use in supporting interfaces between training computers and computers that simulate the responses of spacecraft scientific payloads, PSimNet could be especially well suited for a variety of other applications -- for example, group automobile-driver training in a classroom. Another potential application might lie in networking of automobile-diagnostic computers at repair facilities to a central computer that would compile the expertise of numerous technicians and engineers and act as an expert consulting technician.

  11. Phenology monitoring protocol: Northeast Temperate Network

    USGS Publications Warehouse

    Tierney, Geri; Mitchell, Brian; Miller-Rushing, Abraham J.; Katz, Jonathan; Denny, Ellen; Brauer, Corinne; Donovan, Therese; Richardson, Andrew D.; Toomey, Michael; Kozlowski, Adam; Weltzin, Jake F.; Gerst, Kathy; Sharron, Ed; Sonnentag, Oliver; Dieffenbach, Fred

    2013-01-01

    historical parks and national historic sites in the northeastern US. This protocol was developed in collaboration with and relies upon the procedures and infrastructure of the USA National Phenology Network (USA-NPN), including Nature’s Notebook, USA-NPN’s online plant and animal phenology observation program (www.nn.usanpn.org). Organized in 2007, USA-NPN is a nation-wide partnership among federal agencies, schools and universities, citizen volunteers, and others to monitor and understand the influence of seasonal cycles on the nation’s biological resources. The overall goal of NETN’s phenology monitoring program is to determine trends in the phenology of key species in order to assist park managers with the detection and mitigation of the effects of climate change on park resources. An additional programmatic goal is to interest and educate park visitors and staff, as well as a cadre of volunteer monitors.

  12. Morton's interdigital neuroma: a comprehensive treatment protocol.

    PubMed

    Bennett, G L; Graham, C E; Mauldin, D M

    1995-12-01

    One hundred fifteen patients with signs and symptoms of Mortons' interdigital neuroma were studied in an attempt to evaluate the efficacy of a staged treatment program. The first stage consisted of patient education, footwear modifications, and metatarsal head relief. The second stage consisted of a steroid/local anesthetic injection into the affected interspace. The third stage was surgical excision of the inflamed interdigital nerve. Overall, 97 of 115 patients (85%) believed that they had improved with the treatment program. Twenty-four patients (21%) eventually required surgical excision of the nerve and 23 of 24 patients (96%) had satisfactory results. The results of the staged treatment protocol were very satisfactory and patient satisfaction was high.

  13. Fault recovery in the reliable multicast protocol

    NASA Technical Reports Server (NTRS)

    Callahan, John R.; Montgomery, Todd L.; Whetten, Brian

    1995-01-01

    The Reliable Multicast Protocol (RMP) provides a unique, group-based model for distributed programs that need to handle reconfiguration events at the application layer. This model, called membership views, provides an abstraction in which events such as site failures, network partitions, and normal join-leave events are viewed as group reformations. RMP provides access to this model through an application programming interface (API) that notifies an application when a group is reformed as the result of a some event. RMP provides applications with reliable delivery of messages using an underlying IP Multicast (12, 5) media to other group members in a distributed environment even in the case of reformations. A distributed application can use various Quality of Service (QoS) levels provided by RMP to tolerate group reformations. This paper explores the implementation details of the mechanisms in RMP that provide distributed applications with membership view information and fault recovery capabilities.

  14. Collaborative lymphoedema management: developing a clinical protocol.

    PubMed

    Thomson, Mary; Walker, Jackie

    2011-05-01

    Lymphoedema is a very distressing chronic condition prevalent in some metastatic cancers. Conservative treatment of lymphoedema in palliative care involves complete/complex decongestive therapy (CDT) using manual lymphatic drainage (MLD), compression therapy (bandaging and/or garments), skincare, and remedial exercises, adapted to the needs of the patient. The aim of this service development project was to identify current practice in a hospice palliative care service, develop new assessment tools, and implement a collaborative clinical protocol to improve access to lymphoedema management for patients in the hospice. Two audits provided new evidence about patient profiles, patient assessment, and treatment outcomes for cancer- and non-cancer-related lymphoedema. This project had a quality-improvement effect on service delivery and developed an effective partnership approach to lymphoedema management between local district nursing services and the specialist lymphoedema physiotherapist.

  15. Optical protocols for advanced spacecraft networks

    NASA Technical Reports Server (NTRS)

    Bergman, Larry A.

    1991-01-01

    Most present day fiber optic networks are in fact extensions of copper wire networks. As a result, their speed is still limited by electronics even though optics is capable of running three orders of magnitude faster. Also, the fact that photons do not interact with one another (as electrons do) provides optical communication systems with some unique properties or new functionality that is not readily taken advantage of with conventional approaches. Some of the motivation for implementing network protocols in the optical domain, a few possible approaches including optical code-division multiple-access (CDMA), and how this class of networks can extend the technology life cycle of the Space Station Freedom (SSF) with increased performance and functionality are described.

  16. Designing an Exploration Atmosphere Prebreathe Protocol

    NASA Technical Reports Server (NTRS)

    Conkin, Johnny; Feiveson, A. H.; Gernhardt, M. L.; Norcross, J. R.; Wessel, J. H., III

    2015-01-01

    Extravehicular activities (EVAs) at remote locations must maximize limited resources such as oxygen (O2) and also minimize the risk of decompression sickness (DCS). A proposed remote denitrogenation (prebreathe) protocol requires astronauts to live in a mildly hypoxic atmosphere at 8.2 psia while periodically performing EVAs at 4.3 psia. Empirical data are required to confirm that the protocol meets the current accept requirements: less than or equal to 15% incidence of Type I DCS, less than or equal to 20% incidence of Grade IV venous gas emboli (VGE), both at 95% statistical confidence, with no Type II DCS symptom during the validation trial. METHODS: A repeated measures statistical design is proposed in which groups of 6 subjects with physical characteristics similar to active-duty astronauts would first become equilibrated to an 8.2 psia atmosphere in a hypobaric chamber containing 34% O2 and 66% N2, over 48 h, and then perform 4 simulated EVAs at 4.3 psia over the next 9 days. In the equilibration phase, subjects undergo a 3-h 100% O2 mask prebreathe prior to and during a 5-min ascent to 8.2 psia to prevent significant tissue N2 supersaturation on reaching 8.2 psia. Masks would be removed once 34% O2 is established at 8.2 psia, and subjects would then equilibrate to this atmosphere for 48 h. The hypoxia is equivalent to breathing air at 1,220 meters (4,000 ft) altitude, just as was experienced in the shuttle 10.2 psia - 26.5% O2 staged denitrogenation protocol and the current ISS campout denitrogenation protocol. For simulated EVAs, each subject dons a mask and breathes 85% O2 and 15% N2 during a 3-min depressurization to 6.0 psia, holds for 15 min, and then completes a 3-min depressurization to 4.3 psia. The simulated EVA period starts when 6.0 psia is reached and continues for a total of 240 min (222 min at 4.3 psia). During this time, subjects will follow a prescribed repetitive activity against loads in the upper and lower body with mean metabolic rate

  17. Melanins and melanogenesis: methods, standards, protocols.

    PubMed

    d'Ischia, Marco; Wakamatsu, Kazumasa; Napolitano, Alessandra; Briganti, Stefania; Garcia-Borron, José-Carlos; Kovacs, Daniela; Meredith, Paul; Pezzella, Alessandro; Picardo, Mauro; Sarna, Tadeusz; Simon, John D; Ito, Shosuke

    2013-09-01

    Despite considerable advances in the past decade, melanin research still suffers from the lack of universally accepted and shared nomenclature, methodologies, and structural models. This paper stems from the joint efforts of chemists, biochemists, physicists, biologists, and physicians with recognized and consolidated expertise in the field of melanins and melanogenesis, who critically reviewed and experimentally revisited methods, standards, and protocols to provide for the first time a consensus set of recommended procedures to be adopted and shared by researchers involved in pigment cell research. The aim of the paper was to define an unprecedented frame of reference built on cutting-edge knowledge and state-of-the-art methodology, to enable reliable comparison of results among laboratories and new progress in the field based on standardized methods and shared information.

  18. Hamstring Muscle Injuries, a Rehabilitation Protocol Purpose

    PubMed Central

    Valle, Xavier; L.Tol, Johannes; Hamilton, Bruce; Rodas, Gil; Malliaras, Peter; Malliaropoulos, Nikos; Rizo, Vicenc; Moreno, Marcel; Jardi, Jaume

    2015-01-01

    Context: Hamstring acute muscle injuries are prevalent in several sports including AFL football (Australian Football League), sprinting and soccer, and are often associated with prolonged time away from sport. Evidence Acquisition: In response to this, research into prevention and management of hamstring injury has increased, but epidemiological data shows no decline in injury and re-injury rates, suggesting that rehabilitation programs and return to play (RTP) criteria have to be improved. There continues to be a lack of consensus regarding how to assess performance, recovery and readiness to RTP, following hamstring strain injury. Results: The aim of this paper was to propose rehabilitation protocol for hamstring muscle injuries based on current basic science and research knowledge regarding injury demographics and management options. Conclusions: Criteria-based (subjective and objective) progression through the rehabilitation program will be outlined along with exercises for each phase, from initial injury to RTP. PMID:26715969

  19. Neonatal euthanasia: lessons from the Groningen Protocol.

    PubMed

    Eduard Verhagen, A A

    2014-10-01

    Decisions about neonatal end-of-life care have been studied intensely over the last 20 years in The Netherlands. Nationwide surveys were done to quantify these decisions, provide details and monitor the effect of guidelines, new regulations and other interventions. One of those interventions was the Groningen Protocol for newborn euthanasia in severely ill newborns, published in 2005. Before publication, an estimated 20 cases of euthanasia per year were performed. After publication, only two cases in five years were reported. Studies suggested that this might be partly caused by the lack of consensus about the dividing line between euthanasia and palliative care. New recommendations about paralytic medication use in dying newborns were issued to increase transparency and to improve reporting of euthanasia. New surveys will be needed to measure the effects of these interventions. This cycle of interventions and measurements seems useful for continuous improvement of end-of-life care in newborns.

  20. Tactical medicine -- the Israeli revised protocol.

    PubMed

    Waldman, Maor; Richman, Aaron; Shapira, Shmuel C

    2012-01-01

    Limited conflicts and the war against terrorism, in particular, have changed the emphasis in the present trend from preparing to cope with full-scale wars to the need to combat in limited conflicts. This shift has affected significantly medical units' preparations. Law enforcement organizations have come together with medical first responders in a combined new model. This model is supposed to be adopted and utilized in combat and evolved from the civilian model toward a modus operandi that combines the tactical and medical protocols into a single algorithm, the "Tactical Combat Casualty Care" (TCCC). This TCCC model is believed to enhance the mutual understanding and cooperation of tactical and medical forces in combat and especially amongst special military units. Utilizing the model will be achieved by the development of well-matched standard operating procedures and sharing drills. All these acts are hoped to improve safety of the participating units and hopefully also the medical outcomes.

  1. Security Verification of Secure MANET Routing Protocols

    DTIC Science & Technology

    2012-03-22

    Approved: L1 FEB 12.. Maj Todd R . Andel, PhD (Chairman) Date ~~ Rb 12 Date Date Abstract Secure mobile ad hoc network (MANET) routing protocols are...topology, T=5. 17 Listing 2.1: MPR Selection Algorithm [16]. 1 s e t N2 [ n ] , n e i g h b o r ; 2 3 s e t MPR Selec t ion ( s e t ans , i n t s r c...4 s e l e c t e e = ∅ ; / ∗ ( i ) Remove a l l e n t r i e s from s e l e c t e e ∗ / 5 ans = ans \\ i d ; / ∗ ( i i ) Exc lude y o u r s e l f from

  2. Intermittent kangaroo mother care: a NICU protocol.

    PubMed

    Davanzo, Riccardo; Brovedani, Pierpaolo; Travan, Laura; Kennedy, Jacqueline; Crocetta, Anna; Sanesi, Cecilia; Strajn, Tamara; De Cunto, Angela

    2013-08-01

    The practice of kangaroo mother care (KMC) is steadily increasing in high-tech settings due to its proven benefits for both infants and parents. In spite of that, clear guidelines about how to implement this method of care are lacking, and as a consequence, some restrictions are applied in many neonatal intensive care units (NICUs), preventing its practice. Based on recommendations from the Expert Group of the International Network on Kangaroo Mother Care, we developed a hospital protocol in the neonatal unit of the Institute for Maternal and Child Health in Trieste, Italy, a level 3 unit, aimed to facilitate and promote KMC implementation in high-tech settings. Our guideline is therefore proposed, based both on current scientific literature and on practical considerations and experience. Future adjustments and improvements would be considered based on increasing clinical KMC use and further knowledge.

  3. Suitable Learning Styles for Intelligent Tutoring Technologies (Styles d’Apprentissage Appropries pour les Technologies Tuteurs Intelligents)

    DTIC Science & Technology

    2010-05-01

    des tuteurs intelligents. Pour rendre la technologie efficace dans un environnement de formation à distance, les styles d’apprentissage de chaque...psychometric test itself found that the internal consistency and factorial validity of the categories, properties and boundaries of the modeled...circumstances where reliability has not been confirmed ( internally or by independent reviewers), a discussion on its constructs and factors’ validity is

  4. Extraction and anonymity protocol of medical file.

    PubMed Central

    Bouzelat, H.; Quantin, C.; Dusserre, L.

    1996-01-01

    To carry out the epidemiological study of patients suffering from a given cancer, the Department of Medical Informatics (DIM) has to link information coming from different hospitals and medical laboratories in the Burgundy region. Demands from the French department for computerized information security (Commission Nationale de l'Informatique et des Libertés: CNIL), in regard to abiding by the law of January 6, 1978, completed by the law of July 1st, 1994 on nominal data processing in the framework of medical research have to be taken into account. Notably, the CNIL advised to render anonymous patient identities before the extraction of each establishment file. This paper describes a recently implemented protocol, registered with the French department for computerized information security (Service Central de la Sécurité des Systèmes d'information : SCSSI) whose purpose is to render anonymous medical files in view of their extraction. Once rendered anonymous, these files will be exportable so as to be merged with other files and used in a framework of epidemiological studies. Therefore, this protocol uses the Standard Hash Algorithm (SHA) which allows the replacement of identities by their imprints while ensuring a minimal collision rate in order to allow a correct linkage of the different information concerning the same patient. A first evaluation of the extraction and anonymity software with regard to the purpose of an epidemiological survey is described here. In this paper, we also show how it would be possible to implement this system by means of the Internet communication network. PMID:8947681

  5. Outcome analysis of individualized vestibular rehabilitation protocols

    NASA Technical Reports Server (NTRS)

    Black, F. O.; Angel, C. R.; Pesznecker, S. C.; Gianna, C.

    2000-01-01

    OBJECTIVE: To determine the outcome of vestibular rehabilitation protocols in subjects with peripheral vestibular disorders compared with normal and abnormal control subjects. STUDY DESIGN: Prospective study using repeated measure, matched control design. Subjects were solicited consecutively according to these criteria: vestibular disorder subjects who had abnormal results of computerized dynamic posturography (CDP) sensory organization tests (SOTs) 5 and 6 and underwent rehabilitation; vestibular disorder subjects who had abnormal results of SOTs 5 and 6 and did not undergo rehabilitation; and normal subjects (normal SOTs). SETTING: Tertiary neurotology clinic. SUBJECTS: Men and women over age 18 with chronic vestibular disorders and chief complaints of unsteadiness, imbalance, and/or motion intolerance, and normal subjects. INTERVENTIONS: Pre- and post-rehabilitation assessment included CDP, vestibular disability, and activities of daily living questionnaires. Individualized rehabilitation plans were designed and implemented to address the subject's specific complaints and functional deficits. Supervised sessions were held at weekly intervals, and self-administered programs were devised for daily home use. MAIN OUTCOME MEASURES: CDP composite and SOT scores, number of falls on CDP, and self-assessment questionnaire results. RESULTS: Subjects who underwent rehabilitation (Group A) showed statistically significant improvements in SOTs, overall composite score, and reduction in falls compared with abnormal (Group B) control groups. Group A's performances after rehabilitation were not significantly different from those of normal subjects (Group C) in SOTs 3 through 6, and close to normal on SOTs 1 and 2. Subjects in Group A also reported statistically significant symptomatic improvement. CONCLUSIONS: Outcome measures of vestibular protocol physical therapy confirmed objective and subjective improvement in subjects with chronic peripheral vestibular disorders. These

  6. Interplanetary Overlay Network Bundle Protocol Implementation

    NASA Technical Reports Server (NTRS)

    Burleigh, Scott C.

    2011-01-01

    The Interplanetary Overlay Network (ION) system's BP package, an implementation of the Delay-Tolerant Networking (DTN) Bundle Protocol (BP) and supporting services, has been specifically designed to be suitable for use on deep-space robotic vehicles. Although the ION BP implementation is unique in its use of zero-copy objects for high performance, and in its use of resource-sensitive rate control, it is fully interoperable with other implementations of the BP specification (Internet RFC 5050). The ION BP implementation is built using the same software infrastructure that underlies the implementation of the CCSDS (Consultative Committee for Space Data Systems) File Delivery Protocol (CFDP) built into the flight software of Deep Impact. It is designed to minimize resource consumption, while maximizing operational robustness. For example, no dynamic allocation of system memory is required. Like all the other ION packages, ION's BP implementation is designed to port readily between Linux and Solaris (for easy development and for ground system operations) and VxWorks (for flight systems operations). The exact same source code is exercised in both environments. Initially included in the ION BP implementations are the following: libraries of functions used in constructing bundle forwarders and convergence-layer (CL) input and output adapters; a simple prototype bundle forwarder and associated CL adapters designed to run over an IPbased local area network; administrative tools for managing a simple DTN infrastructure built from these components; a background daemon process that silently destroys bundles whose time-to-live intervals have expired; a library of functions exposed to applications, enabling them to issue and receive data encapsulated in DTN bundles; and some simple applications that can be used for system checkout and benchmarking.

  7. Protocol of Blood Serum Eye Drops.

    PubMed

    Katsakoulas, Ioannis; Lougovoi, Claudia; Paraskevopoulou, Penelope; Vougioukas, Nikolaos

    2015-01-01

    Keratoconjunctivitis sicca is one of the most frequent diagnoses for seeking eye care. Accumulated evidence over the past three decades has revealed a significant contribution of several molecules contained in tears at the homeostasis of the epithelium of the ocular surface. Therefore, autologous blood serum in the form of eye drops can provide substantial help in the management of keratoconjunctivitis sicca. Also making this a favorable treatment for keratoconjunctivitis sicca is the fact that this approach has become an insurance-covered benefit in some countries. This report demonstrates a formulation of blood serum eye drops with the purpose of providing an alternative to the marked absence of a universally established protocol. Exclusion criteria, equipment, preservation, dosage, duration, and guidelines for patients are described. Also included are details on the treatment of one representative embodiment. All (pre-/post-)analytical considerations and the total cost are addressed. Outcome measures such as Schirmer' s test, break up time, and Ocular Surface Disease Index score are recorded before treatment, at 1 and 2 months, ideally as monotherapy with 100% serum q.i.d. Blood serum isolated under aseptic conditions maintained throughout is delivered as a ready-to-use formulation to the patient. Serum eye drops should be included in the modern armamentarium against keratoconjunctivitis sicca, and, hopefully, their eventual widespread application will result in coverage by most if not all insurance funds. The implementation described contributes to the hopeful establishment of a standardized protocol and provides a potentially benefit of a low-cost, applicable treatment of the ocular epithelium without side effects.

  8. Quantum protocol for cheat-sensitive weak coin flipping.

    PubMed

    Spekkens, R W; Rudolph, Terry

    2002-11-25

    We present a quantum protocol for the task of weak coin flipping. We find that, for one choice of parameters in the protocol, the maximum probability of a dishonest party winning the coin flip if the other party is honest is 1/sqrt[2]. We also show that if parties restrict themselves to strategies wherein they cannot be caught cheating, their maximum probability of winning can be even smaller. As such, the protocol offers additional security in the form of cheat sensitivity.

  9. TRIGA: Telecommunications Protocol Processing Subsystem Using Reconfigurable Interoperable Gate Arrays

    NASA Technical Reports Server (NTRS)

    Pang, Jackson; Pingree, Paula J.; Torgerson, J. Leigh

    2006-01-01

    We present the Telecommunications protocol processing subsystem using Reconfigurable Interoperable Gate Arrays (TRIGA), a novel approach that unifies fault tolerance, error correction coding and interplanetary communication protocol off-loading to implement CCSDS File Delivery Protocol and Datalink layers. The new reconfigurable architecture offers more than one order of magnitude throughput increase while reducing footprint requirements in memory, command and data handling processor utilization, communication system interconnects and power consumption.

  10. Transfer With SNR High-Speed Transport Protocol.

    DTIC Science & Technology

    1995-12-01

    To validate SNR as a high speed transport protocol, efficient means of transferring large data files are required. The problem is that no file...transfer program is currently implemented for SNR . The SNR protocol was described in IEEE Transactions on Communications 91 Vol. 38 #11. The approach taken...was to modify the Trivial File Transfer Protocol (TFTP) and use it with the SNR Receiver and Transmitter implementations in both the FDDI and Ethernet

  11. Lignes directrices pour le suivi des cardiostimulateurs au canada : consensus du groupe de travail canadien sur la cardiostimulation

    PubMed

    D Fraser JD; M Gillis AM; Irwin; Nishimura; Tyers; Philippon

    2000-03-01

    Un sondage sur les pratiques de cardiostimulation au Canada effectue en 1997 a revele un profond desir pour des lignes directrices nationales sur le suivi des cardiostimulateurs. Ces lignes directrices sur le suivi des cardiostimulateurs representent une declaration de consensus du Groupe de travail canadien sur la cardiostimulation. Le suivi des patients en personne plutot que par moyens transtelephoniques est preferable. Les patients devraient etre examines au minimum dans les 72 heures suivant l'implantation, 2 a 12 semaines et 6 mois apres l'implantation, et annuellement par la suite. Des examens plus frequents peuvent etre requis pour certains patients. Ceci dependra des problemes cardiovasculaires associes et des appareils en particulier. Une visite de suivi typique devrait comprendre un examen cardiovasculaire oriente, l'interrogation du systeme de cardiostimulation et une revue des donnees de telemetrie, un examen du rythme sous-jacent, un examen des seuils de stimulation et de detection et une reprogrammation adequate des parametres pour optimaliser le fonctionnement et la longevite de l'appareil.

  12. Appel pour une allocation intelligente dans le financement du système de santé au Cameroun

    PubMed Central

    Sieleunou, Isidore

    2011-01-01

    Le Cameroun utilise un système de budgétisation historique et une approche «top-down» pour allouer ses ressources de santé publique. Cependant, le pays compte 175 districts de santé dont les fortes disparités de nature épidémiologique, économique, géographique et culturelle, devraient être prises en compte pour réduire les iniquités en matière de sante publique. Comment comprendre alors que dans ces conditions, le budget des administrations publiques alloué aux différents districts de santé au Cameroun soit quasi identique alors que les défis sont si différents? L'inefficience allocative (mauvaise attribution du budget) générée par un tel système conduit vraisemblablement à une inefficience technique (mauvaise utilisation du budget). Pour la marche vers l'atteinte des objectifs du millénaire en matière de sante, il est impératif et urgent que les décideurs du secteur de la santé allouent de manière intelligente les ressources dans le système de santé. PMID:22355420

  13. Effects of Mold Temperature and Pouring Temperature on the Hot Tearing of Cast Al-Cu Alloys

    NASA Astrophysics Data System (ADS)

    Li, Shimin; Sadayappan, Kumar; Apelian, Diran

    2016-10-01

    The effects of mold temperature and pouring temperature on hot tearing formation and contraction behavior of a modified Al-Cu alloy 206 (M206) have been studied. The experiments were conducted using a newly developed Constrained Rod Mold, which simultaneously measures the contraction force/time/temperature during solidification for the restrained casting or linear contraction/time/temperature for a relaxed casting. Three mold temperatures [473 K, 573 K, and 643 K (200 °C, 300 °C, and 370 °C)] and three pouring temperatures [superheat of 50 K, 100 K, and 150 K (50 °C, 100 °C, and 150 °C)] were studied, and alloy A356 was used as reference for comparison. The results confirm that alloy A356 has high resistance to hot tearing. Hot tearing did not occur for the three mold temperatures evaluated, whereas alloy M206 exhibited significant hot tearing for the same casting and mold temperature conditions. Hot tearing severity and linear contraction in alloy 206 decreased significantly with increasing mold temperature. Increasing pouring temperature increases hot tearing in alloy M206, but the effect is not as significant as that of mold temperature. The results and underlying mechanism of these effects are discussed in correlation with the thermomechanical properties and microstructures.

  14. Ictères pathologiques du nouveau-né à l'hôpital Bonzola de Mbuji-Mayi, République Démocratique du Congo

    PubMed Central

    Mutombo, André Kabamba; Mukuku, Olivier; Kabulo, Benjamin Kasongo; Mutombo, Augustin Mulangu; Ngeleka, Alain Mutombo; Mutombo, Junior Dibwe; Kabuya, Maguy Sangaji; Kayembe, Celestin Mukoko; Luboya, Oscar Numbi

    2014-01-01

    L'ictère néonatal, bien qu'il soit souvent très banal, ne doit pas pour autant être négligé car il peut relever des étiologies variées et avoir des significations différentes au point de devenir pathologique. Au cours d'une étude rétro-prospective descriptive, les auteurs analysent les aspects épidemio-cliniques, thérapeutiques et évolutifs des ictères néonataux pathologiques à l'Unité des Urgences Néonatales de Bonzola à Mbuji-Mayi (RD Congo) sur une période de 5 ans. La fréquence est de 4,9% avec une incidence annuelle de 24 cas/an. La prédominance masculine est notée avec un sexe ratio de 1,1. Ces ictères sont précoces (31,1%) et tardif (17,5%). Les principales causes sont dans 81,6% des cas dominées par les infections (42,5%) et, incompatibilité fœto-maternelle (39,1%). La symptomatologie habituelle est notée: ictère franc et pâleur cutanéo-muqueuse (100%), urines jaunes foncées (62,5%), signes neurologiques (42,5%) et généraux (47,5%). Le traitement était à la fois étiologique (60%) et symptomatique ou d'appoint (40%) et a consisté dans l'association antibiotiques avec transfusion et/ou exsanguino-transfusion (24,2%), antibiothérapie seule (35,8%), inducteurs enzymatiques (35%) et photothérapie (5%). L’évolution a été bonne dans 82,3% des cas contre 9,3% des décès. PMID:25883730

  15. The Protocol of Choice for Treatment of Snake Bite

    PubMed Central

    Mohammad Alizadeh, Afshin; Rahimi, Mitra; Erfantalab, Peyman; Ostadi, Ali

    2016-01-01

    The aim of the current study is to compare three different methods of treatment of snake bite to determine the most efficient one. To unify the protocol of snake bite treatment in our center, we retrospectively reviewed files of the snake-bitten patients who had been referred to us between 2010 and 2014. They were contacted for follow-up using phone calls. Demographic and on-arrival characteristics, protocol used for treatment (WHO/Haddad/GF), and outcome/complications were evaluated. Patients were entered into one of the protocol groups and compared. Of a total of 63 patients, 56 (89%) were males. Five, 19, and 28 patients were managed by Haddad, WHO, or GF protocols, respectively. Eleven patients had fallen into both GF and WHO protocols and were excluded. Serum sickness was significantly more common when WHO protocol was used while 100% of the compartment syndromes and 71% of deformities had been reported after GF protocol. The most important complications were considered to be deformity, compartment syndrome, and amputation and were more frequent after the use of WHO and GF protocols (23.1% versus 76.9%; none in Haddad; P = NS). Haddad protocol seems to be the best for treatment of snake-bitten patients in our region. However, this cannot be strictly concluded because of the limited sample size and nonsignificant P values. PMID:27738653

  16. The Xpress Transfer Protocol (XTP): A tutorial (expanded version)

    NASA Technical Reports Server (NTRS)

    Sanders, Robert M.; Weaver, Alfred C.

    1990-01-01

    The Xpress Transfer Protocol (XTP) is a reliable, real-time, light weight transfer layer protocol. Current transport layer protocols such as DoD's Transmission Control Protocol (TCP) and ISO's Transport Protocol (TP) were not designed for the next generation of high speed, interconnected reliable networks such as fiber distributed data interface (FDDI) and the gigabit/second wide area networks. Unlike all previous transport layer protocols, XTP is being designed to be implemented in hardware as a VLSI chip set. By streamlining the protocol, combining the transport and network layers and utilizing the increased speed and parallelization possible with a VLSI implementation, XTP will be able to provide the end-to-end data transmission rates demanded in high speed networks without compromising reliability and functionality. This paper describes the operation of the XTP protocol and in particular, its error, flow and rate control; inter-networking addressing mechanisms; and multicast support features, as defined in the XTP Protocol Definition Revision 3.4.

  17. The Xpress Transfer Protocol (XTP): A tutorial (short version)

    NASA Technical Reports Server (NTRS)

    Sanders, Robert M.; Weaver, Alfred C.

    1990-01-01

    The Xpress Transfer Protocol (XTP) is a reliable, light weight transfer layer protocol. Current transport layer protocols such as DoD's Transmission Control Protocol (TCP) and ISO's Transport Protocol (TP) were not designed for the next generation of high speed, interconnected reliable networks such as fiber distributed data interface (FDDI) and the gigabit/second wide area networks. Unlike all previous transport layer protocols, XTP is being designed to be implemented in hardware as a VLSI chip set. By streamlining the protocol, combining the transport and network layers, and utilizing the increased speed and parallelization possible with a VLSI implementation, XTP will be able to provide the end-to-end data transmission rates demanded in the high speed networks without compromising reliability and functionality. This tutorial briefly describes the operation of the XTP protocol and in particular, its error, flow and rate control; inter-networking addressing mechanisms; and multicast support features, as defined in the XTP Protocol Definition Revision 3.4.

  18. NEMVP: North American energy measurement and verification protocol

    SciTech Connect

    1996-03-01

    This measurement and verification protocol discusses procedures that,when implemented, allow buyers, sellers, and financiers of energy projects to quantify energy conservation measure performance and savings.

  19. 48 CFR 3439.701 - Internet Protocol version 6.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... ACQUISITION REGULATION SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Department Requirements for Acquisition of Information Technology 3439.701 Internet Protocol version 6. The...

  20. 48 CFR 3439.701 - Internet Protocol version 6.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... ACQUISITION REGULATION SPECIAL CATEGORIES OF CONTRACTING ACQUISITION OF INFORMATION TECHNOLOGY Department Requirements for Acquisition of Information Technology 3439.701 Internet Protocol version 6. The...

  1. The classification of quantum symmetric-key encryption protocols

    NASA Astrophysics Data System (ADS)

    Xiang, Chong; Yang, Li; Peng, Yong; Chen, Dongqing

    2014-11-01

    The classification of quantum symmetric-key encryption protocol is presented. According to five elements of a quantum symmetric-key encryption protocol: plaintext, ciphertext, key, encryption algorithm and decryption algorithm, there are 32 different kinds of them. Among them, 5 kinds of protocols have already been constructed and studied, and 21 kinds of them are proved to be impossible to construct, the last 6 kinds of them are not yet presented effectively. That means the research on quantum symmetric-key encryption protocol only needs to consider with 5 kinds of them nowadays.

  2. Biometrics based authentication scheme for session initiation protocol.

    PubMed

    Xie, Qi; Tang, Zhixiong

    2016-01-01

    Many two-factor challenge-response based session initiation protocol (SIP) has been proposed, but most of them are vulnerable to smart card stolen attacks and password guessing attacks. In this paper, we propose a novel three-factor SIP authentication scheme using biometrics, password and smart card, and utilize the pi calculus-based formal verification tool ProVerif to prove that the proposed protocol achieves security and authentication. Furthermore, our protocol is highly efficient when compared to other related protocols.

  3. A Flexible CSMA based MAC Protocol for Software Defined Radios

    NASA Astrophysics Data System (ADS)

    Puschmann, André; Kalil, Mohamed A.; Mitschele-Thiel, Andreas

    2012-09-01

    In this article, we propose a flexible CSMA based MAC protocol which facilitates research and experimentation using software define radios. The modular architecture allows to employ the protocol on platforms with heterogeneous hardware capabilities and provides the freedom to exchange or adapt the spectrum sensing mechanism without modifying the MAC protocol internals. We discuss the architecture of the protocol and provide structural details of its main components. Furthermore, we present throughput measurements that have been obtained on an example system using host-based spectrum sensing.

  4. A fast and mild decellularization protocol for obtaining extracellular matrix.

    PubMed

    Mirzarafie, Ariana; Grainger, Rhian K; Thomas, Ben; Bains, William; Ustok, Fatma I; Lowe, Chris R

    2014-04-01

    Degradation of extracellular matrix (ECM) function with age is a major cause of loss of tissue function with age that we would wish to reverse. Tissue engineering to provide replacement tissue requires an ECM-mimicking scaffold for cell organization. The standard protocols for achieving this take 10 days and include steps that may change the protein structure of the ECM. Here we describe a much shorter protocol for decellularizing chicken muscle, skin, and tendon samples that achieves the same efficiency as the original protocol without protein cross-link interference. Our protocol can be completed in 72 hr.

  5. A Secure and Efficient Handover Authentication Protocol for Wireless Networks

    PubMed Central

    Wang, Weijia; Hu, Lei

    2014-01-01

    Handover authentication protocol is a promising access control technology in the fields of WLANs and mobile wireless sensor networks. In this paper, we firstly review an efficient handover authentication protocol, named PairHand, and its existing security attacks and improvements. Then, we present an improved key recovery attack by using the linearly combining method and reanalyze its feasibility on the improved PairHand protocol. Finally, we present a new handover authentication protocol, which not only achieves the same desirable efficiency features of PairHand, but enjoys the provable security in the random oracle model. PMID:24971471

  6. An improved key agreement protocol based on chaos

    NASA Astrophysics Data System (ADS)

    Wang, Xingyuan; Zhao, Jianfeng

    2010-12-01

    Cryptography based on chaos theory has developed fast in the past few years, but most of the researches focus on secret key cryptography. There are few public key encryption algorithms and cryptographic protocols based on chaos, which are also of great importance for network security. We introduce an enhanced key agreement protocol based on Chebyshev chaotic map. Utilizing the semi-group property of Chebyshev polynomials, the proposed key exchange algorithm works like Diffie-Hellman algorithm. The improved protocol overcomes the drawbacks of several previously proposed chaotic key agreement protocols. Both analytical and experimental results show that it is effective and secure.

  7. Protocol for a Delay-Tolerant Data-Communication Network

    NASA Technical Reports Server (NTRS)

    Torgerson, Jordan; Hooke, Adrian; Burleigh, Scott; Fall, Kevin

    2004-01-01

    As its name partly indicates, the Delay-Tolerant Networking (DTN) Bundle Protocol is a protocol for delay-tolerant transmission of data via communication networks. This protocol was conceived as a result of studies of how to adapt Internet protocols so that Internet-like services could be provided across interplanetary distances in support of deep-space exploration. The protocol, and software to implement the protocol, is being developed in collaboration among experts at NASA's Jet Propulsion Laboratory and other institutions. No current Internet protocols can accommodate long transmission delay times or intermittent link connectivity. The DTN Bundle Protocol represents a departure from the standard Internet assumption that a continuous path is available from a host computer to a client computer: It provides for routing of data through networks that may be disjointed and may be characterized by long transmission delays. In addition to networks that include deepspace communication links, examples of such networks include terrestrial ones within which branches are temporarily disconnected. The protocol is based partly on the definition of a message-based overlay above the transport layers of the networks on which it is hosted.

  8. Optimal channel access protocol with multiple reception capacity

    NASA Astrophysics Data System (ADS)

    Chlamtac, Imrica; Farago, Andras

    1994-04-01

    A multiple access packet communication model is analyzed in which the users can receive packets on more than one common channel. For this type of system, a new channel access protocol is presented. We prove that under heavy homogeneous load the protocol guarantees the maximum achievable throughput among all possible protocols. The general model can be applied to different systems, according to various realizations of the logical channels. For example, in packet radio networks the channels can be realized by different carrier frequencies (FDMA) or by different codes (CDMA). The simplicity and optimality of the protocol make it attractive for practical applications.

  9. A Weak Value Based QKD Protocol Robust Against Detector Attacks

    NASA Astrophysics Data System (ADS)

    Troupe, James

    2015-03-01

    We propose a variation of the BB84 quantum key distribution protocol that utilizes the properties of weak values to insure the validity of the quantum bit error rate estimates used to detect an eavesdropper. The protocol is shown theoretically to be secure against recently demonstrated attacks utilizing detector blinding and control and should also be robust against all detector based hacking. Importantly, the new protocol promises to achieve this additional security without negatively impacting the secure key generation rate as compared to that originally promised by the standard BB84 scheme. Implementation of the weak measurements needed by the protocol should be very feasible using standard quantum optical techniques.

  10. Letter Report. Defense Waste Processing Facility Pour Spout Heaters - Conceptual Designs and Modeling

    SciTech Connect

    SK Sundaram; JM Perez, Jr.

    2000-09-06

    The Tanks Focus Area (TFA) identified a major task to address performance limitations and deficiencies of the Defense Waste Processing Facility (DWPF) now in its sixth year of operation. Design, installation, testing, monitoring, operability, and a number of other characteristics were studied by research personnel collaboratively at a number of facilities: Savannah River Technology Center (SRTC), Clemson Environmental Technologies Laboratory (CETL), Pacific Northwest National Laboratory (PNNL), and the Idaho National Engineering and Environmental Laboratory (INEEL). Because the potential limiting feature to the DWPF was identified as the pour spout/riser heater, researches on alternative design concepts originally proposed in the past were revisited. In the original works, finite element modeling was performed to evaluate temperature distribution and stress of the design currently used at the DWPF. Studies were also made to define the requirements of the design and to consider the approaches for remote removal/replacement. Their heater type/location, their remotely replaceable thermocouples, and their capabilities for remote handling characterized the five alternative designs proposed. Review comments on the alternative designs indicated a relatively wide range of advantages and disadvantages of the designs. The present report provides an overview of the design criteria, modeling results, and alternative designs. Based on a review of the past design optimization activities and an assessment of recent experience, recommendations are proposed for future consideration and improvement.

  11. Des recommandations pour prévenir l’ophtalmie néonatale

    PubMed Central

    2002-01-01

    Malgré la prévalence décroissante de Neisseria gonorrhoeae au Canada, la Société canadienne de pédiatrie recommande que, le plus tôt possible après la naissance, tous les nourrissons reçoivent un traitement prophylactique de nitrate d’argent, de tétracycline ou d’érythromycine, afin de réduire le risque d’ophtalmie néonatale causée par cet organisme. Le recours à ces agents peut également se révéler bénéfique pour prévenir l’ophtalmie causée par d’autres organismes. De plus, la Société canadienne de pédiatrie appuie le dépistage prénatal systématique de N gonorrhoeae et de Chlamydia trachomatis, de même que le traitement des infections dépistées pendant la grossesse.

  12. Lambeaux autofermants pour le traitement des brulures electriques du scalp par haut voltage

    PubMed Central

    Hafidi, J.; El Mazouz, S.; El Mejatti, H.; Fejjal, N.; Gharib, N.E.; Abbassi, A.; Belmahi, A.M.

    2011-01-01

    Summary Les brûlures électriques par haut voltage sont responsables de gros dégâts tissulaires en immédiat et dans les jours suivant l’accident du fait de la chaleur importante dégagée par effet joule et de la thrombose microvasculaire évolutive. Les pertes de substances du scalp secondaires à ces brûlures nécessitent une couverture par lambeaux vu la destruction du périoste et du calvarium en regard. De juin 1997 à juin 2008, 15 patients ont été traités pour des pertes de substance du scalp secondaires à des brûlures électriques par haut voltage de diamètre allant de 8 à 11 cm et siégeant dans la région tonsurale. Ces patients ont été opérés dans la première semaine suivant l’accident. Les pertes de substance du scalp de taille moyenne secondaires à ces brûlures peuvent être couvertes per primam de façon fiable par des lambeaux locaux axialisés et multiples. Nous relatons l’expérience du Service de Chirurgie Plastique du Centre Hospitalier Universitaire Ibn-Sina, Rabat, Maroc, dans la gestion et la prise en charge de ces brûlures. PMID:22262963

  13. QUELS FUTURS TRAITEMENTS POUR LA DEPENDANCE AU TABAC ET AU CANNABIS?

    PubMed Central

    LE FOLL, Bernard; JUSTINOVA, Zuzana; TANDA, Gianlugi; GOLDBERG, Steven R.

    2009-01-01

    RESUME Plus de trois millions de morts sont attribués au tabagisme dans le monde par an, et l’usage de tabac est en progression dans les pays en voie de développement. L’usage de tabac est donc une des rares causes de mortalité qui augmente, avec une prévision de plus de 10 millions de morts par an dans 30–40 ans. Le cannabis ou marijuana est la drogue illicite la plus consommée dans le monde et il n’y a actuellement pas de traitement disponible. Bien que les systèmes dopaminergiques jouent un rôle central dans les effets renforçants des drogues, d’autres systèmes sont impliqués. Nous présentons ici des résultats récents obtenus avec des antagonistes des récepteurs cannabinoides CB1, des récepteurs D3 de la dopamine et des récepteurs opioïdes. Ces antagonistes qui modulent de façon directe ou indirecte la transmission dopaminergique cérébrale représentent des approches prometteuses pour le traitement du tabagisme ou de la dépendance au cannabis. Ces approches sont à valider dans des essais cliniques. PMID:18663981

  14. Uranyl nitrate pouring solution for producing nuclear fuel particles and a method for its preparation

    SciTech Connect

    Hein, K.

    1983-05-24

    Sorbitol, or another polyalcohol such as erythritol, dulcitol or xylitol, is added to a solution containing uranyl nitrate which may also contain another heavy metal, such as thorium or plutonium, prior to preneutralization with ammonia in order to provide a highly viscous solution that can be preneutralized to a great extent without premature precipitation of uranium. The high viscosity makes possible the formation of favorably large drops when the solution is dripped into an ammonia containing bath for external gelification of the drops. According to the pouring apparatus used, the particles after washing, drying and sintering have a diameter between 0.6 and 1.5 mm. The polyalcohol is added to a hydrosol containing from 1.5 to 2 moles per liter of heavy metal, the polyalcohol being added until concentration of onethird mole of polyalcohol per mole of heavy metal is reached. In certain cases up to four moles of ammonium nitrate per liter are added. The solution so produced can be preneutralized with up to 90% of the amount of ammonia stoichiometrically necessary for T separation of uranium without the formation of any precipitate, preferably by first adding ammonia gas under strong stirring and then adding ammonium bicarbonate in excess, which decomposes to liberate ammonia to an extent determined by the temperature, which is to be precisely controlled. It is possible to obtain this way a solution of predetermined viscosity from which the excess ammonium bicarbonate can readily be separated.

  15. 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.

  16. ANALYTICAL RESULTS OF MOX COLEMANITE CONCRETE SAMPLES POURED AUGUST 29, 2012

    SciTech Connect

    Best, D.; Cozzi, A.; Reigel, M.

    2012-12-20

    The Mixed Oxide Fuel Fabrication Facility (MFFF) will use colemanite bearing concrete neutron absorber panels credited with attenuating neutron flux in the criticality design analyses and shielding operators from radiation. The Savannah River National Laboratory is tasked with measuring the total density, partial hydrogen density, and partial boron density of the colemanite concrete. Samples poured 8/29/12 were received on 9/20/2012 and analyzed. The average total density of each of the samples measured by the ASTM method C 642 was within the lower bound of 1.88 g/cm{sup 3}. The average partial hydrogen density of samples 8.6.1, 8.7.1, and 8.5.3 as measured using method ASTM E 1311 met the lower bound of 6.04E-02 g/cm{sup 3}. The average measured partial boron density of each sample met the lower bound of 1.65E-01 g/cm{sup 3} measured by the ASTM C 1301 method. The average partial hydrogen density of samples 8.5.1, 8.6.3, and 8.7.3 did not meet the lower bound. The samples, as received, were not wrapped in a moist towel as previous samples and appeared to be somewhat drier. This may explain the lower hydrogen partial density with respect to previous samples.

  17. ANALYTICAL RESULTS OF MOX COLEMANITE CONCRETE SAMPLES POURED AUGUST 29, 2012

    SciTech Connect

    Cozzi, A.; Best, D.; Reigel, M.

    2012-10-30

    The Mixed Oxide Fuel Fabrication Facility (MFFF) will use colemanite bearing concrete neutron absorber panels credited with attenuating neutron flux in the criticality design analyses and shielding operators from radiation. The Savannah River National Laboratory is tasked with measuring the total density, partial hydrogen density, and partial boron density of the colemanite concrete. Samples poured 8/29/12 were received on 9/20/2012 and analyzed. The average total density of each of the samples measured by the ASTM method C 642 was within the lower bound of 1.88 g/cm{sup 3}. The average partial hydrogen density of samples 8.6.1, 8.7.1, and 8.5.3 as measured using method ASTM E 1311 met the lower bound of 6.04E-02 g/cm{sup 3}. The average measured partial boron density of each sample met the lower bound of 1.65E-01 g/cm{sup 3} measured by the ASTM C 1301 method. The average partial hydrogen density of samples 8.5.1, 8.6.3, and 8.7.3 did not meet the lower bound. The samples, as received, were not wrapped in a moist towel as previous samples and appeared to be somewhat drier. This may explain the lower hydrogen partial density with respect to previous samples.

  18. Sondes radicalaires pour l'imagerie RPE et PDN stables dans les fluides biologiques

    NASA Astrophysics Data System (ADS)

    Guiberteau, T.; Marx, L.; Rassat, A.; Grucker, D.

    1999-10-01

    Electron paramagnetic resonance and dynamic nuclear polarisation are two techniques that allow the detection of free radicals. They can also be used for in vivo studies for oximetry in blood or tissues. One of the main problems for the development of these techniques is the need of free radicals that are stable in biological media. We present in this communication a study by EPR and DNP of two free radicals that can be suitable for in vivo applications. La résonance paramagnétique électronique et la polarisation dynamique nucléaire sont deux techniques qui permettent de détecter les radicaux libres dans divers systèmes. Elles peuvent également être utilisées in vivo et permettre ainsi de mesurer la concentration en oxygène dans le sang ou dans les tissus. Un des problèmes de ces techniques est l'utilisation de sondes radicalaires suffisamment stables dans les milieux biologiques. Nous présentons une étude comparative par RPE et PDN de deux radicaux libres de type nitroxydes dérivés de l'isoindoline. Un des radicaux possédant quatre groupements éthyle semble être intéressant pour le développement de la RPE et la PDN in vivo.

  19. Analysis Of DWPF Sludge Batch 7a (Macrobatch 8) Pour Stream Samples

    SciTech Connect

    Johnson, F. C.; Pareizs, J. M.

    2012-10-24

    The Defense Waste Processing Facility (DWPF) began processing Sludge Batch 7a (SB7a), also referred to as Macrobatch 8 (MB8), in June 2011. SB7a is a blend of the heel of Tank 40 from Sludge Batch 6 (SB6) and the SB7a material that was transferred to Tank 40 from Tank 51. SB7a was processed using Frit 418. During processing of each sludge batch, the DWPF is required to take at least one glass sample to meet the objectives of the Glass Product Control Program (GPCP), which is governed by the DWPF Waste Compliance Plan, and to complete the necessary Production Records so that the final glass product may be disposed of at a Federal Repository. Three pour stream glass samples and two Melter Feed Tank (MFT) slurry samples were collected while processing SB7a. These additional samples were taken during SB7a to understand the impact of antifoam and the melter bubblers on glass redox chemistry. The samples were transferred to the Savannah River National Laboratory (SRNL) where they were analyzed.

  20. DDN (Defense Data Network) Protocol Handbook. Volume 1. DoD Military Standard Protocols

    DTIC Science & Technology

    1985-12-01

    development of O-M standards and strengthening the feedback from field users to t’*j standards development process. Otta Protocol Standarte ...interface are definei in this document. 1.3 The following terminology will be used in this document. Units of information at the link level will...69 Background and terminology - 69 Sequence numbers- 69 Numbering scheue 70 Connection sequence variables ------ 70 Send variables 70

  1. Etude de la transition tribologique entre le fretting et le meso-fretting pour des materiaux de contact electrique

    NASA Astrophysics Data System (ADS)

    Gagnon, Daniel

    Dans les installations electriques, les contacts sont toujours soumis a des contraintes alternees ou a des micro-deplacements. Il en resulte une corrosion par fretting, phenomene defini comme un type de deterioration de la surface qui se produit lorsque deux materiaux en contact sont soumis a des mouvements microscopiques d'oscillations de tres faible amplitude (0 a 100 mum). Ceci a pour effet de provoquer une degradation de la resistance de contact et une interruption du passage du courant. Ce phenomene a des repercussions considerables sur le plan pratique puisque les micro-deplacements de pieces en contact peuvent etre causes par la dilatation thermique differentielle des metaux, par des vibrations mecaniques, par la relaxation des contraintes ou par l'echauffement des contacts lorsqu'on interrompt et retablit le courant. Nous avons donc dans le cadre de cette these etudie plusieurs aspects du fretting (0--100 mum) et du meso-fretting (100 a 1000 mum) pour differents materiaux de contact electrique. Des travaux experimentaux ont ete realises a partir de deux montages reproduisant divers aspects de la degradation par le fretting. Un premier montage de fretting de type bille-plaque a ete entierement developpe a l'ETS et un second montage, de type fil-plaque a ete utilise en collaboration avec Hydro Quebec IREQ a Varennes. Plusieurs techniques de mesures et d'analyse relevant tant du domaine de la mecanique du contact que de la metallurgie ont ete utilisees pour traiter les resultats. L'influence du courant sur le taux d'usure et la force de friction a ete examinee pour divers materiaux de contacts. Des essais de fatigue thermique et electrique ont ete realises sur divers materiaux et lubrifiants de contact. Il a ete demontre que pour le domaine entre 100 mum et 1000 mum, le taux d'usure n'est pas le meme de 0 a 100 mum et au dela de 1000 mum. La plupart des materiaux evalues montrent un stade de comportement intermediaire dont le debut se situe entre 100 mum et

  2. Prise en charge des complications des fistules artério-veineuses pour hémodialyse chronique

    PubMed Central

    Jiber, Hamid; Zrihni, Youssef; Zaghloul, Rachid; Hajji, Rita; Zizi, Othman; Bouarhroum, Abdellatif

    2015-01-01

    La fistule artério-veineuse native est l'accès vasculaire de choix pour l'hémodialyse chronique en raison de sa longévité, son taux faible de complication et de mortalité par rapport aux pontages artério-veineux et aux cathéters. Cependant, il arrive assez souvent que l'on assiste à des complications qui sont dominées par la sténose et la thrombose. C'est une étude rétrospective des complications ayants survenues pour 31 fistules artério-veineuses pour hémodialyse chronique des 200 fistules réalisées chez 200 patients au sein du service de chirurgie vasculaire du CHU Hassan II de Fès sur une période de trois ans, étendue de Janvier 2007 à Décembre 2009. Ces complications ont été présentés par les thromboses dans 14 cas soit 45,15% de l'ensemble des complications, les sténoses dans 4 cas (12,90%,) les anévrismes dans 4 cas (12,90%), les complications ischémiques dans 3 cas (9,67%), l'infection dans 3 cas (9,67%), l'hémorragie dans 2 cas (6,45%) et l’ hyperdébit dans un seul cas soit 3,22%. On a pu conserver 22 fistules soit 70,96% par traitement chirurgical ou endovasculaire, on a confectionné une nouvelle fistule dans 8 cas soit 25,80%, et on a adressé une patiente (3,22%) pour pose d'un cathéter veineux tunnelisé permanent. Les complications des fistules artério-veineuses pour l'hémodialyse chronique sont la principale cause de morbidité chez les patients hémodialysés, il est donc important de s'impliquer lors de leur création, et de donner un maximum d'attention quand ils sont manipulés. Ceci suggère la mise en place d'un programme de surveillance de ces fistules en raison de l'impact des complications sur la morbi-mortalité du patient hémodialysé et sur le plan financier. PMID:26113933

  3. A Security Analysis of the 802.11s Wireless Mesh Network Routing Protocol and Its Secure Routing Protocols

    PubMed Central

    Tan, Whye Kit; Lee, Sang-Gon; Lam, Jun Huy; Yoo, Seong-Moo

    2013-01-01

    Wireless mesh networks (WMNs) can act as a scalable backbone by connecting separate sensor networks and even by connecting WMNs to a wired network. The Hybrid Wireless Mesh Protocol (HWMP) is the default routing protocol for the 802.11s WMN. The routing protocol is one of the most important parts of the network, and it requires protection, especially in the wireless environment. The existing security protocols, such as the Broadcast Integrity Protocol (BIP), Counter with cipher block chaining message authentication code protocol (CCMP), Secure Hybrid Wireless Mesh Protocol (SHWMP), Identity Based Cryptography HWMP (IBC-HWMP), Elliptic Curve Digital Signature Algorithm HWMP (ECDSA-HWMP), and Watchdog-HWMP aim to protect the HWMP frames. In this paper, we have analyzed the vulnerabilities of the HWMP and developed security requirements to protect these identified vulnerabilities. We applied the security requirements to analyze the existing secure schemes for HWMP. The results of our analysis indicate that none of these protocols is able to satisfy all of the security requirements. We also present a quantitative complexity comparison among the protocols and an example of a security scheme for HWMP to demonstrate how the result of our research can be utilized. Our research results thus provide a tool for designing secure schemes for the HWMP. PMID:24002231

  4. A security analysis of the 802.11s wireless mesh network routing protocol and its secure routing protocols.

    PubMed

    Tan, Whye Kit; Lee, Sang-Gon; Lam, Jun Huy; Yoo, Seong-Moo

    2013-09-02

    Wireless mesh networks (WMNs) can act as a scalable backbone by connecting separate sensor networks and even by connecting WMNs to a wired network. The Hybrid Wireless Mesh Protocol (HWMP) is the default routing protocol for the 802.11s WMN. The routing protocol is one of the most important parts of the network, and it requires protection, especially in the wireless environment. The existing security protocols, such as the Broadcast Integrity Protocol (BIP), Counter with cipher block chaining message authentication code protocol (CCMP), Secure Hybrid Wireless Mesh Protocol (SHWMP), Identity Based Cryptography HWMP (IBC-HWMP), Elliptic Curve Digital Signature Algorithm HWMP (ECDSA-HWMP), and Watchdog-HWMP aim to protect the HWMP frames. In this paper, we have analyzed the vulnerabilities of the HWMP and developed security requirements to protect these identified vulnerabilities. We applied the security requirements to analyze the existing secure schemes for HWMP. The results of our analysis indicate that none of these protocols is able to satisfy all of the security requirements. We also present a quantitative complexity comparison among the protocols and an example of a security scheme for HWMP to demonstrate how the result of our research can be utilized. Our research results thus provide a tool for designing secure schemes for the HWMP.

  5. Exploring Shared Memory Protocols in FLASH

    SciTech Connect

    Horowitz, Mark; Kunz, Robert; Hall, Mary; Lucas, Robert; Chame, Jacqueline

    2007-04-01

    ABSTRACT The goal of this project was to improve the performance of large scientific and engineering applications through collaborative hardware and software mechanisms to manage the memory hierarchy of non-uniform memory access time (NUMA) shared-memory machines, as well as their component individual processors. In spite of the programming advantages of shared-memory platforms, obtaining good performance for large scientific and engineering applications on such machines can be challenging. Because communication between processors is managed implicitly by the hardware, rather than expressed by the programmer, application performance may suffer from unintended communication – communication that the programmer did not consider when developing his/her application. In this project, we developed and evaluated a collection of hardware, compiler, languages and performance monitoring tools to obtain high performance on scientific and engineering applications on NUMA platforms by managing communication through alternative coherence mechanisms. Alternative coherence mechanisms have often been discussed as a means for reducing unintended communication, although architecture implementations of such mechanisms are quite rare. This report describes an actual implementation of a set of coherence protocols that support coherent, non-coherent and write-update accesses for a CC-NUMA shared-memory architecture, the Stanford FLASH machine. Such an approach has the advantages of using alternative coherence only where it is beneficial, and also provides an evolutionary migration path for improving application performance. We present data on two computations, RandomAccess from the HPC Challenge benchmarks and a forward solver derived from LS-DYNA, showing the performance advantages of the alternative coherence mechanisms. For RandomAccess, the non-coherent and write-update versions can outperform the coherent version by factors of 5 and 2.5, respectively. In LS-DYNA, we obtain

  6. The Strong-Inference Protocol: Not Just for Grant Proposals

    ERIC Educational Resources Information Center

    Hiebert, Sara M.

    2007-01-01

    The strong-inference protocol puts into action the important concepts in Platt's often-assigned, classic paper on the strong-inference method (10). Yet, perhaps because students are frequently performing experiments with known outcomes, the protocols they write as undergraduates are usually little more than step-by-step instructions for performing…

  7. Modifications to the Standard Sit-and-Reach Flexibility Protocol.

    ERIC Educational Resources Information Center

    Holt, Laurence E.; Burke, Darren G.; Pelham, Thomas W.

    1999-01-01

    Describes several modifications of the standard sit-and-reach flexibility protocol using a new device called the multitest flexometer (MTF). Using the MTF, researchers could take six flexibility measures beyond the stand-and-reach test. The modified protocol allowed the indirect assessment of the influence of the four major muscle groups that…

  8. PACIFIC NORTHWEST SIDE-BY-SIDE PROTOCOL COMPARISON TEST

    EPA Science Inventory

    Eleven state, tribal, and federal agencies participated during summer 2005 in a side-by-side comparison of protocols used to measure common in-stream physical attributes to help determine which protocols are best for determining status and trend of stream/watershed condition. Th...

  9. The Geneva Protocol of 1925: Past and Present.

    ERIC Educational Resources Information Center

    Harbison, John L.

    1982-01-01

    Presents a position paper for use in high school social studies class debates on the Geneva Protocol of 1925. The Protocol was an international agreement to restrict chemical and biological warfare (CBW). The author traces the history of U.S. policies dealing with CBW since 1925. (AM)

  10. A Protocol Validator for the SCM and CFSM Models

    DTIC Science & Technology

    1993-06-01

    first program automates either the system state analysis (Smart Mushroom), or the full global analysis ( Big Mushroom) for a protocol specified by the...analysis (Smart Mushroom), or the full global analysis ( Big Mushroom) for a protocol specified by the SCM model. The second program called Simple...REACHABILITY ANALYSIS ................................... 22 D . OUTPUT .................................................... 25 IV. SMART AND BIG MUSHROOM: A

  11. Detailed analysis of routing protocols with different network limitations

    NASA Astrophysics Data System (ADS)

    Masood, Mohsin; Abuhelala, Mohamed; Glesk, Ivan

    2016-12-01

    In network communication field, routing protocols have got a significant role which are not only used in networks to handle the user data but also to monitor the different network environments. Dynamic routing protocols such as OSPF, EIGRP and RIP are used for forwarding user data to its destination by instantly detecting the dynamic changes across the network. The dynamic changes in the network can be in the form of topological changes, congestions, links failure etc. Therefore, it becomes a challenge to develop and implement dynamic routing protocols that fulfills the network requirements. Hence, each routing protocol has its own characteristics such as convergence activity, routing metric, routing table etc. and will perform differently in various network environments. This paper presents a comprehensive study of static and dynamic routing, along with dynamic routing protocols. Experiments that are conducted under various network limitations are presented using the OPNET tool. The performance of each of dynamic routing protocols are monitored and explained in the form of simulated results using network parameters. The results are analyzed, in order to provide a clear understanding of each protocol performance for the selection of the proper protocol for a given network environment.

  12. An auditable protocol for treating attention deficit/hyperactivity disorder

    PubMed Central

    Hill, P; Taylor, E

    2001-01-01

    We present an auditable protocol for attention deficit/hyperactivity disorder (ADHD) or hyperkinetic disorder. The protocol is derived from standard recommendations and evidence, and is intended for outpatient medical clinic practice in secondary care. Suggested side effect rating scales are included.

 PMID:11316683

  13. Simulation and Analysis of a Wireless Mac Protocol: MACAW.

    DTIC Science & Technology

    1996-09-01

    MACAW (Medium Access Collision Avoidance Wireless) is a new MAC protocol for wireless LANs proposed by Bharghavan et al. Ref. 2 based on Karn’s MACA...performance of the MACAW protocol occurs at approximately 50% channel load. We have also shown the importance of the backoff algorithm, and finally, we have

  14. 48 CFR 3439.701 - Internet Protocol version 6.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 48 Federal Acquisition Regulations System 7 2013-10-01 2012-10-01 true Internet Protocol version 6. 3439.701 Section 3439.701 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION ACQUISITION... for Acquisition of Information Technology 3439.701 Internet Protocol version 6. The...

  15. 48 CFR 3439.701 - Internet Protocol version 6.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 7 2014-10-01 2014-10-01 false Internet Protocol version 6. 3439.701 Section 3439.701 Federal Acquisition Regulations System DEPARTMENT OF EDUCATION... Requirements for Acquisition of Information Technology 3439.701 Internet Protocol version 6. The...

  16. Wireless Protocol Security: To Simulate or not Simulate

    DTIC Science & Technology

    2006-01-01

    protocols under various Byzantine attacks [11]. acceptable, since outliers or statistical anomalies do not These include black hole , flood rushing, and... wormhole noticeably affect general protocol performance. Conversely, attacks in wireless networks in which all nodes are security must focus on "worst case

  17. Power Tools for Talking: Custom Protocols Enrich Coaching Conversations

    ERIC Educational Resources Information Center

    Pomerantz, Francesca; Ippolito, Jacy

    2015-01-01

    Discussion-based protocols--an "agreed upon set of discussion or observation rules that guide coach/teacher/student work, discussion, and interactions" (Ippolito & Lieberman, 2012, p. 79)--can help focus and structure productive professional learning discussions. However, while protocols are slowly growing into essential elements of…

  18. Clinicians as Communication Partners: Developing a Mediated Discourse Elicitation Protocol

    ERIC Educational Resources Information Center

    Hengst, Julie A.; Duff, Melissa C.

    2007-01-01

    This article presents the development and piloting of a mediated discourse elicitation protocol. Grounded in situated theories of communication and informed by mediated discourse analysis, this protocol selectively samples familiar discourse types in a manner designed to preserve interactional aspects of communication. Critically, the mediated…

  19. 42 CFR 438.352 - External quality review protocols.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... quality review protocols. Each protocol must specify— (a) The data to be gathered; (b) The sources of the data; (c) The activities and steps to be followed in collecting the data to promote its accuracy, validity, and reliability; (d) The proposed method or methods for validly analyzing and interpreting...

  20. 42 CFR 438.352 - External quality review protocols.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... quality review protocols. Each protocol must specify— (a) The data to be gathered; (b) The sources of the data; (c) The activities and steps to be followed in collecting the data to promote its accuracy, validity, and reliability; (d) The proposed method or methods for validly analyzing and interpreting...

  1. 42 CFR 438.352 - External quality review protocols.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... quality review protocols. Each protocol must specify— (a) The data to be gathered; (b) The sources of the data; (c) The activities and steps to be followed in collecting the data to promote its accuracy, validity, and reliability; (d) The proposed method or methods for validly analyzing and interpreting...

  2. 42 CFR 438.352 - External quality review protocols.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... quality review protocols. Each protocol must specify— (a) The data to be gathered; (b) The sources of the data; (c) The activities and steps to be followed in collecting the data to promote its accuracy, validity, and reliability; (d) The proposed method or methods for validly analyzing and interpreting...

  3. 21 CFR 312.320 - Treatment IND or treatment protocol.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 5 2010-04-01 2010-04-01 false Treatment IND or treatment protocol. 312.320... for Treatment Use § 312.320 Treatment IND or treatment protocol. Under this section, FDA may permit an investigational drug to be used for widespread treatment use. (a) Criteria. The criteria in § 312.305(a) must...

  4. Experimental eavesdropping attack against Ekert's protocol based on Wigner's inequality

    SciTech Connect

    Bovino, F. A.; Colla, A. M.; Castagnoli, G.; Castelletto, S.; Degiovanni, I. P.; Rastello, M. L.

    2003-09-01

    We experimentally implemented an eavesdropping attack against the Ekert protocol for quantum key distribution based on the Wigner inequality. We demonstrate a serious lack of security of this protocol when the eavesdropper gains total control of the source. In addition we tested a modified Wigner inequality which should guarantee a secure quantum key distribution.

  5. ENVIRONMENTAL TECHNOLOGY VERIFICATION TEST PROTOCOL, GENERAL VENTILATION FILTERS

    EPA Science Inventory

    The Environmental Technology Verification Test Protocol, General Ventilation Filters provides guidance for verification tests.

    Reference is made in the protocol to the ASHRAE 52.2P "Method of Testing General Ventilation Air-cleaning Devices for Removal Efficiency by P...

  6. SDLIP + STARTS = SDARTS: A Protocol and Toolkit for Metasearching.

    ERIC Educational Resources Information Center

    Green, Noah; Ipeirotis, Panagiotis G.; Gravano, Luis

    This paper describes how SDLIP and STARTS, two complementary protocols for searching over distributed document collections, were combined. The resulting protocol, called SDARTS, is simple yet expressible enough to enable building sophisticated metasearch engines. SDARTS can be viewed as an instantiation of SDLIP with metasearch-specific elements…

  7. A Priority Protocol for Token-Ring Networks

    NASA Technical Reports Server (NTRS)

    Liu, H. T.

    1986-01-01

    New priority protocol controls access to token-ring local-area network (LAN) of digital-communication stations over widely ranging mix of low- and high-priority traffic. Protocol, called round-robin priority scheme (RRPS), introduces only small overhead and therefore degrades system performance only minimally. Key messages guaranteed access to local-area network during peak loads.

  8. Judges' Agreement and Disagreement Patterns When Encoding Verbal Protocols.

    ERIC Educational Resources Information Center

    Schael, Jocelyne; Dionne, Jean-Paul

    The basis of agreement or disagreement among judges/evaluators when applying a coding scheme to concurrent verbal protocols was studied. The sample included 20 university graduates, from varied backgrounds; 10 subjects had and 10 subjects did not have experience in protocol analysis. The total sample was divided into four balanced groups according…

  9. An efficient sampling protocol for sagebrush/grassland monitoring

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Monitoring the health and condition of rangeland vegetation can be very time consuming and costly. An efficiency but rigorous sampling protocol is needed for monitoring sagebrush/grassland vegetation. A randomized sampling protocol was presented for geo-referenced, nadir photographs acquired using...

  10. Concurrent Think-Aloud Protocol as a Socially Situated Construct

    ERIC Educational Resources Information Center

    Sasaki, Tomomi

    2008-01-01

    Verbal report protocols have been considered as direct representations of individual cognitive processes. The present study examined the social nature of verbal reports, particularly focusing on whether and in what ways concurrent think-aloud (TA) protocol data are recipient-designed. The results of this study suggest that verbal reports elicited…

  11. Microbiological Research Under the Nagoya Protocol: Facts and Fiction.

    PubMed

    Overmann, Jörg; Scholz, Amber Hartman

    2017-02-01

    The Nagoya Protocol is based on concepts of biological diversity that are hardly applicable to microorganisms. Because of this incongruence, the Nagoya Protocol threatens future microbial research, potentially defeating its original purpose. Countries with appropriate regulations can promote science and their bioeconomy through international collaboration and simultaneously gain a competitive advantage.

  12. Transceiving protocol design for a free space optical communication system

    NASA Astrophysics Data System (ADS)

    Wang, Hualong; Su, Wanxin; Xing, Zhongbao

    2008-12-01

    A new transceiving protocol is demonstrated for a Free Space Optical (FSO) communication system, and it's discussed in two parts: the transmitting protocol and the receiving protocol. During the discussion of these two parts, the cooperation of them is also discussed. Different from wired communication, an FSO system modulates the data on a narrow beam of laser transmitting through the free space or the atmosphere, and the protocol presented in this paper is mainly optimized for terrestrial Free Space Optical links, in which the signal channel of the system is mainly the atmosphere. Due to the complex composition and activity of the atmosphere, this signal channel brings in great influence on the transmitting laser in it, for example, the absorption and scattering of the atmosphere molecules and aerosols, the scintillation of received laser power caused by the turbulence of the atmosphere, all of which results in a much higher Bit Error Rate (BER) of the communication system. Thus in designing a protocol for an FSO system, more effort should be taken in the encoding of the data stream, the synchronization of the data stream, error checking and exception handling. The main function of the transmitting protocol includes interfacing the outer input data with a parallel port, buffering the input data, encoding the input data stream, serializing the parallel data and output the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The main function of the receiving protocol includes filtering and synchronizing the input serial data stream, paralleling the serial data stream, decoding the input data, error checking, exception handling and interfacing the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces

  13. Protocols for growing plant symbioses; rhizobia.

    PubMed

    Gourion, Benjamin; Bourcy, Marie; Cosson, Viviane; Ratet, Pascal

    2013-01-01

    Legume plants are used as a protein source for human and animal nutrition. The high protein content of legume plants is achieved via the establishment of a root symbiosis with rhizobia that allows the reduction of atmospheric nitrogen. In recent years, M. truncatula has been used as a legume model in view of its small, diploid genome, self-fertility, and short life cycle, as well as availability of various genomic and genetic tools. The choice and use of this model legume plant in parallel with the other model legume Lotus japonicus for molecular studies has triggered extensive studies that have now identified the molecular actors corresponding to the first steps of the plant-bacterial interaction. The use of this plant as model in an increasing number of laboratories has resulted in the development of numerous protocols to study the establishment of the symbiosis. The media and growth conditions used in our laboratory to nodulate wild-type or transgenic plants as well as wild-type plants with transgenic hairy root system are described below.

  14. Cyberspace modernization. An interest protocol planning advisory

    SciTech Connect

    Keliiaa, Curtis M.; McLane, Victor N.

    2014-07-01

    A common challenge across the communications and information technology (IT) sectors is Internet + modernization + complexity + risk + cost. Cyberspace modernization and cyber security risks, issues, and concerns impact service providers, their customers, and the industry at large. Public and private sectors are struggling to solve the problem. New service opportunities lie in mobile voice, video, and data, and machine-to-machine (M2M) information and communication technologies that are migrating not only to predominant Internet Protocol (IP) communications, but also concurrently integrating IP, version 4 (IPv4) and IP, version 6 (IPv6). With reference to the Second Internet and the Internet of Things, next generation information services portend business survivability in the changing global market. The planning, architecture, and design information herein is intended to increase infrastructure preparedness, security, interoperability, resilience, and trust in the midst of such unprecedented change and opportunity. This document is a product of Sandia National Laboratories Tribal Cyber and IPv6 project work. It is a Cyberspace Modernization objective advisory in support of bridging the digital divide through strategic partnership and an informed path forward.

  15. Data Provenance in Photogrammetry Through Documentation Protocols

    NASA Astrophysics Data System (ADS)

    Carboni, N.; Bruseker, G.; Guillem, A.; Bellido Castañeda, D.; Coughenour, C.; Domajnko, M.; de Kramer, M.; Ramos Calles, M. M.; Stathopoulou, E. K.; Suma, R.

    2016-06-01

    Documenting the relevant aspects in digitisation processes such as photogrammetry in order to provide a robust provenance for their products continues to present a challenge. The creation of a product that can be re-used scientifically requires a framework for consistent, standardised documentation of the entire digitisation pipeline. This article provides an analysis of the problems inherent to such goals and presents a series of protocols to document the various steps of a photogrammetric workflow. We propose this pipeline, with descriptors to track all phases of digital product creation in order to assure data provenance and enable the validation of the operations from an analytic and production perspective. The approach aims to support adopters of the workflow to define procedures with a long term perspective. The conceptual schema we present is founded on an analysis of information and actor exchanges in the digitisation process. The metadata were defined through the synthesis of previous proposals in this area and were tested on a case study. We performed the digitisation of a set of cultural heritage artefacts from an Iron Age burial in Ilmendorf, Germany. The objects were captured and processed using different techniques, including a comparison of different imaging tools and algorithms. This augmented the complexity of the process allowing us to test the flexibility of the schema for documenting complex scenarios. Although we have only presented a photogrammetry digitisation scenario, we claim that our schema is easily applicable to a multitude of 3D documentation processes.

  16. Repeatable assessment protocol for electromagnetic trackers

    NASA Astrophysics Data System (ADS)

    Haidegger, Tamas; Sirokai, Beáta; Fenyvesi, Gábor; Kovács, Levente; Benyó, Balázs; Benyó, Zoltán

    2012-02-01

    In the past decades, many new trends appeared in interventional medicine. One of the most groundbreaking ones is Image-Guided Surgery (IGS). The main benefit of IGS procedures is the reduction of the patient's pain and collateral damage through improved accuracy and targeting. Electromagnetic Tracking (EMT) has been introduced to medical applications as an effective tool for navigation. However, magnetic fields can be severely distorted by ferromagnetic materials and electronic equipment, which is a major barrier towards their wider application. The focus of the study is to determine and compensate the inherent errors of the different types of EMTs, in order to improve their accuracy. Our aim is to develop a standardized, simple and repeatable assessment protocol; to determine tracking errors with sub-millimeter accuracy, hence increasing the measurement precision and reliability. For initial experiments, the NDI Aurora and the Ascension medSAFE systems were used in a standard laboratory environment. We aim to advance to the state-of-the art by describing and disseminating an easily reproducible calibration method, publishing the CAD files of the accuracy phantom and the source of the evaluation data. This should allow the wider spread of the technique, and eventually lead to the repeatable and comparable assessment of EMT systems.

  17. A Design Protocol to Develop Radiology Dashboards

    PubMed Central

    Karami, Mahtab

    2014-01-01

    ABSTRACT Aim: The main objective of this descriptive and development research was to introduce a design protocol to develop radiology dashboards. Material and methods: The first step was to determine key performance indicators for radiology department. The second step was to determine required infrastructure for implementation of radiology dashboards. Infrastructure was extracted from both data and technology perspectives. The third step was to determine main features of the radiology dashboards. The fourth step was to determine the key criteria for evaluating the dashboards. In all these steps, non-probability sampling methods including convenience and purposive were employed and sample size determined based on a persuasion model. Results: Results showed that there are 92 KPIs, 10 main features for designing dashboards and 53 key criteria for dashboards evaluation. As well as, a Prototype of radiology management dashboards in four aspects including services, clients, personnel and cost-income were implemented and evaluated. Applying such dashboards could help managers to enhance performance, productivity and quality of services in radiology department. PMID:25568585

  18. Design issues for floor control protocols

    NASA Astrophysics Data System (ADS)

    Dommel, Hans-Peter; Garcia-Luna-Aceves, Jose J.

    1995-03-01

    Floor control allows users of networked multimedia applications to remotely share resources like cursors, data views, video and audio channels, or entire applications without access conflicts. Floors are mutually exclusive permissions, granted dynamically to collaborating users, mitigating race conditions and guaranteeing fair and deadlock- free resource access. Although floor control is an early concept within computer-supported cooperative work, no framework exists and current floor control mechanisms are often limited to simple objects. While small-scale collaboration can be facilitated by social conventions, the importance of floors becomes evident for large-scale application sharing and teleconferencing orchestration. In this paper, the concept of a scalable session protocol is enhanced with floor control. Characteristics of collaborative environments are discussed, and session and floor control are discerned. The system's and user's requirements perspectives are discussed, including distributed storage policies, packet structure and user-interface design for floor presentation, manipulation, and triggering conditions for floor migration. Interaction stages between users, and scenarios of participant withdrawal, late joins, and establishment of subgroups are elicited with respect to floor generation, bookkeeping, and passing. An API is proposed to standardize and integrate floor control among shared applications. Finally, a concise classification for existing systems with a notion of floor control is introduced.

  19. RADCAL Operations Manual Radiation Calibration Laboratory Protocol

    SciTech Connect

    Bogard, J.S.

    1998-12-01

    The Life Sciences Division (LSD) of Oak Ridge National Laboratory (ORNL) has a long record of radiation dosimetry research, primarily using the Health Physics Research Reactor (HPRR) and the Radiation Calibration Laboratory (RADCAL) in its Dosimetry Applications Research (DOSAR) Program. These facilities have been used by a broad segment of the research community to perform a variety of experiments in areas including, but not limited to, radiobiology, radiation dosimeter and instrumentation development and calibration, and the testing of materials in a variety of radiation environments. Operations of the HPRR were terminated in 1987 and the reactor was moved to storage at the Oak Ridge Y-12 Plant; however, RADCAL will continue to be operated in accordance with the guidelines of the National Institute of Standards and Technology (NIST) Secondary Calibration Laboratory program and will meet all requirements for testing dosimeters under the National Voluntary Laboratory Accreditation Program (NVLAP). This manual is to serve as the primary instruction and operation manual for the Oak Ridge National Laboratory's RADCAL facility. Its purpose is to (1) provide operating protocols for the RADCAL facility, (2) outline the organizational structure, (3) define the Quality Assurance Action Plan, and (4) describe all the procedures, operations, and responsibilities for the safe and proper operation of all routine aspects of the calibration facility.

  20. A 2-Round Anonymous Veto Protocol

    NASA Astrophysics Data System (ADS)

    Hao, Feng; Zieliński, Piotr

    The dining cryptographers network (or DC-net) is a seminal technique devised by Chaum to solve the dining cryptographers problem — namely, how to send a boolean-OR bit anonymously from a group of participants. In this paper, we investigate the weaknesses of DC-nets, study alternative methods and propose a new way to tackle this problem. Our protocol, Anonymous Veto Network (or AV-net), overcomes all the major limitations of DC-nets, including the complex key setup, message collisions and susceptibility to disruptions. While DC-nets are unconditionally secure, AV-nets are computationally secure under the Decision Diffie-Hellman (DDH) assumption. An AV-net is more efficient than other techniques based on the same public-key primitives. It requires only two rounds of broadcast and the least computational load and bandwidth usage per participant. Furthermore, it provides the strongest protection against collusion — only full collusion can breach the anonymity of message senders.