Academic literature on the topic 'Cure et care'
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Journal articles on the topic "Cure et care"
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Morvillers, Jean-Manuel. "Le care, le caring, le cure et le soignant." Recherche en soins infirmiers N° 122, no. 3 (2015): 77. http://dx.doi.org/10.3917/rsi.122.0077.
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Stolee, Paul, Loretta M. Hillier, Sheila Cook, and Kenneth Rockwood. "Cause, Care, Cure: Research Priorities for Alzheimer’s Disease and Related Dementias." Canadian Journal on Aging / La Revue canadienne du vieillissement 30, no. 4 (November 1, 2011): 657–67. http://dx.doi.org/10.1017/s0714980811000523.
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RÉSUMÉUne partie de la stratégie de l’Ontario sur la maladie d’Alzheimer et les démences connexes (MADC) était de développer les priorités de recherche et de recommander des stratégies pour le renforcement des capacités de recherche. Le processus adopté pour atteindre ces objectifs comprenaient une analyse de l’environnement, des entretiens avec les informateurs clés, des enquêtes et un atelier de consensus ; ce processus a impliqué plus de 100 chercheurs, cliniciens, les personnes atteintes de démence précoce, et les aidants membres de familles. Ce document décrit le processus entrepris, les principaux problèmes identifiés et les recommandations pour les priorités de recherche et de renforcement des capacités de recherche ; il fournit également une orientation stratégique pour la recherche sur la démence en Ontario qui est pertinente pour d’autres juridictions. La recherche MADC dans tous ses aspects est nécessaire pour faire progresser la connaissance des causes de la démence, les soins et la guérison ; des lacunes existent actuellement dans la compréhension des approches efficaces pour les soins et le transfert des connaissances. La capacité pour la recherche de haut calibre reste sur le maintien de plans de carrière attractifs pour les chercheurs, des infrastructures solides et de partenariats forts. Afin que la recherche informera les politiques et pratiques, de meilleurs mécanismes seront nécessaires pour l’échange de connaissances.
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Grinfeld, Anne. "Faut-il vraiment choisir entre le « cure » et le « care » ?" Soins Gérontologie 19, no. 106 (March 2014): 23–26. http://dx.doi.org/10.1016/j.sger.2013.12.007.
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Le Dû, Maï. "Synthèse entre cure et care : les sages-femmes déboussolent le genre." Clio, no. 49 (July 1, 2019): 137–51. http://dx.doi.org/10.4000/clio.16300.
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Fahmy-Eid, Nadia, and Aline Charles. "Savoir contrôlé ou pouvoir confisqué? La formation des filles en technologie médicale, réhabilitation et diététique à l’Université de Montréal (1940-1970)." Recherches féministes 1, no. 1 (April 12, 2005): 5–29. http://dx.doi.org/10.7202/057496ar.
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Cet article analyse la structure et l'évolution des programmes ainsi que la composition du personnel enseignant et administratif relatifs à trois disciplines du paramédical à l'Université de Montréal entre 1940 et 1970: la technologie médicale, la réhabilitation et la diététique. Il s'agit de programmes dont la clientèle est en grande majorité ou en totalité féminine. La problématique des auteures s'inscrit dans le cadre d'une analyse des rapports qui lient entre eux l'univers du « care», qui fait référence à l'acte de soigner, et du « cure», qui renvoie à un acte — médical ou autre — supposant un diagnostic et un traitement axés sur la guérison. À travers l'analyse des trois disciplines mentionnées plus haut, l'hypothèse que cherche à vérifier cette étude est double : 1°) Il existe une hiérarchie entre le « cure » et le « care » dans la mesure où ces notions renvoient à un savoir théorique plus valorisé que le savoir-faire pratique. Surtout lorsque ce savoir théorique se rapporte à la médecine. 2°) Dans la mesure où le savoir théorique médical (institutionnalisé) a été accessible surtout aux hommes-médecins, la hiérarchie des savoirs a débouché sur un rapport de pouvoir défavorable aux femmes.
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Devailly, J. P., and L. Josse. "Organisation et financement de la réadaptation en France. Vers un « pacs » entre cure et care ?" Journal de Réadaptation Médicale : Pratique et Formation en Médecine Physique et de Réadaptation 30, no. 4 (December 2010): 150–59. http://dx.doi.org/10.1016/j.jrm.2010.10.008.
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Gaudart, Corinne, and Jeanne Thébault. "La place du care dans la transmission des savoirs professionnels entre anciens et nouveaux à l’hôpital." Articles 67, no. 2 (May 4, 2012): 242–62. http://dx.doi.org/10.7202/1009086ar.
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Cet article présente des résultats d’une recherche réalisée en France et portant sur la transmission des savoirs professionnels entre anciennes et nouvelles, infirmières et aides-soignantes. Le secteur hospitalier est soumis à des transformations démographiques qui pointent l’accueil et la formation des nouveaux comme un enjeu important. Par ailleurs, il connaît des transformations organisationnelles fortes, relatives à la réduction des dépenses de soin, qui touchent les métiers des personnels soignants, notamment dans l’articulation du cure et du care. À partir de l’analyse ergonomique de trois situations de transmission, cet article examine la place du care dans la transmission et questionne ses déterminants organisationnels, individuels et collectifs. Il propose de considérer la transmission comme une activité nodale. C’est en effet une activité qui permet de tisser le métier et d’en débattre entre des personnels de différentes anciennetés, de différents parcours ; c’est aussi un lieu de tensions entre les exigences de l’organisation et celles portées par le métier, notamment dans l’articulation du cure et du care. Son absence de prise en charge concrète par l’hôpital en fait une tâche discrétionnaire pour les anciennes. Les contenus transmis et la dimension collective de la transmission sont donc variables et dépendent fortement des ressources et des contraintes immédiates. Au final, un des enjeux forts de la transmission réside dans la possibilité, pour les anciens comme pour les nouveaux, de travailler en santé et en qualité.
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Brau, Jacqueline, and Madeleine Moulin. "To care or to cure : un défi pour les soignantes auprès des âgés en institution." International Review of Community Development, no. 28 (October 27, 2015): 107–18. http://dx.doi.org/10.7202/1033808ar.
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Proposant un décloisonnement des registres et des temps de la vie sociale, ce texte s’interroge, selon une perspective croisée — historique et sociologique, micro- et macrosociale — sur les justifications des lignes de démarcation entre lecareet lecureen ce qu’elles renvoient immanquablement tant à la division sexuelle des tâches qu’à l’appareil idéologique qui préside implicitement à la légitimation des politiques sociales. Les institutions de soins pour personnes âgées constituent un laboratoire d’analyse où émergent de nouvelles modalités du travail infirmier et de nouvelles formes de professionnalisme du personnel soignant. La pratique professionnelle de femmes (souvent) âgées auprès de personnes âgées (souvent des femmes) dans un milieu où il s’agit plus de prendre soin que de soigner renvoie à une triple problématique, qui traverse toute l’interrogation éthique et politique à propos du lien social : les limites de définition et d’acceptabilité du travail domestique sous toutes ses formes, la valorisation du travail non technique, le statut du travail relationnel, par nature non comptabilisé car non comptabilisable.
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Pichonnaz, Lauriane. "La difficile reconnaissance des compétences des ambulanciers : entre care, cure et force physique." Travailler 26, no. 2 (2011): 17. http://dx.doi.org/10.3917/trav.026.0017.
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Dubé, Karine, Laurie Sylla, and Lynda Dee. "Reply to Commentary: “Are HIV-Infected Candidates for Participation in Risky Cure-Related Studies Otherwise Healthy?”." Journal of Empirical Research on Human Research Ethics 13, no. 1 (November 28, 2017): 23–25. http://dx.doi.org/10.1177/1556264617741715.
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We respond to Eyal et al.’s commentary focusing on how people living with HIV participating in HIV cure-related studies are defined. We argue that the types of participants enrolled in research cannot be dissociated from the study interventions, the types of anticipated risks, and the background standard of care. As the field of HIV cure research advances, more nuance and granularity will be needed to define research criteria and acceptable risk/benefit ratios for cure study participants, as well as specific tiered protocol designs that serve to protect various participant populations from untoward risks, especially in very early phase research with interventions known to have potentially serious toxicities. We highlight key lessons from the ACTIVATE study involving a latency-reversing agent, Panobinostat, for HIV cure study design involving “otherwise healthy volunteers”.
Dissertations / Theses on the topic "Cure et care"
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Guillo, Jocelyn. "Du don de soi dans les soins : la dynamique vocationnelle et l' engagement dans la profession infirmière." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCH023.
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L’objet de cette recherche porte sur le don de soi dans les soins et plus particulièrement sur la vocation comme source d’engagement dans la profession infirmière. Nous cherchons à connaitre ce qui anime les individus à exercer cette profession exposée à ce que la société refoule de nos jours : La vulnérabilité, la vieillesse, la maladie et la mort. Le point d’entrée de notre recherche a démarré autour d’une terminologie : la vocation, pour aboutir au postulat que l’engagement dans les soins infirmiers nécessite une forme « d’amour » particulière qui pousse l’individu à porter secours, attention et soin à la personne vulnérable. Nous savons qu’appréhender cet engagement, c’est accepter de se frotter à la complexité. Nous sommes face à un enchevêtrement de volontés, de demandes, de choix, de désirs, de rêves, de représentations idéalisées, de recherche d’explications, de sens. Cet ensemble constitue le socle sur lequel les acteurs s’engagent. Dans ce travail, nous nous sommes intéressés à l’engagement « initial ». Dans une démarche compréhensive, nous avons questionné des étudiantes infirmières et des infirmières à propos de ce moment où elles ont décidées de franchir le pas et fait le choix de s’engager dans la profession. L’enquête nous a permis de recueillir, un certain nombre de données et de verbatim, ceux-ci croisés avec nos données personnelles, ont permis d’explorer ce processus. Nous avons confronté les données recueillis à la théorie du don de Marcel Mauss. Un faisceau d’orientations entre liberté et contrainte, gratuité et intérêt, nous ont servi d’axe sur lequel s’est mobilisée toute notre démonstration. Nous sommes allés chercher les modes de signification et d’incarnation de l’engagement infirmier au prisme de la cartographie conceptuelle de la tétralogie du don.Mots clés : soins, engagement, infirmière, vocation, image médiatique, don, reconnaissanceOur study focuses self-sacrifice on nursing care and more specifically about the calling in nurse profession. As the work wore on, we search to know how people decided to become a nurseWe seek to know what motivates individuals to practice this profession exposed to what society is driving back today: vulnerability, old age, illness and death. The point of entry of our research has started around a terminology: the calling or vocation, to arrive at the postulate that the commitment in nursing requires a particular form of "love" which urges us to bring relief, attention and care to the vulnerable person. We know that to grasp this commitment is to accept the complexity. For nurses, we are confronted with an entanglement of wills, demands, choices, desires, dreams, idealistic representations, search for explanations, meaning that constitutes the basis on which actors engage. In this work, we looked at the initial commitment. In a comprehensive approach, we questioned nursing students and nurses about the time when they decided to take the plunge and chose to engage in the profession. The survey allowed us to collect a number of data and verbatim, which crossed with our personal data, allowed to explore this process. We compared the data collected with Marcel Mauss's theory of the gift. A cluster of orientations between freedom and constraint, gratuitousness and interest, have served us as the axis on which our whole demonstration has been mobilized. We went to seek the modes of meaning and incarnation of the nursing commitment to the prism of the conceptual mapping of the tetralogy of the gift.Keywords: to care, to cure, involvement, nurse, vocation, media visuals, gift, thankfulness
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Cléau, Hélène. "Savoirs et soin. L'interaction patient-médecin dans le cadre du traitement du cancer de la prostate." Thesis, Besançon, 2012. http://www.theses.fr/2012BESA1023.
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Les traitements du cancer de la prostate permettent d’analyser les savoirs tels qu’ils sont élaborés actuellement en cancérologie. Les propositions de traitement découlent des savoirs scientifiques. La participation du patient au choix du soin s’en trouve questionnée. Le patient est une figure socialement construite et médicalement produite qui n’a de sens qu’au regard du rôle professionnel du médecin. La relation entre ces deux acteurs s’inscrit dans une structure de soin. Cette situation sociale est instituée autour de la nécessité du soin, entendue comme réponse à la souffrance de l’autre. Notre analyse montre les tensions qui traversent le groupe professionnel des médecins sur la question des recommandations thérapeutiques. Les questions de légitimité et d’expertise permettent de mettre à jour la concurrence entre les urologues et les oncologues-radiothérapeutes. Cette concurrence se joue à travers les traitements proposés. Les savoirs mobilisés pour justifier de la légitimité ne sont pas les mêmes et ne sont pas uniquement scientifiques. Ils s’organisent selon une priorité accordée à la sur-vie. En outre, ces savoirs médicaux retentissent de façon différente chez les patients, eux aussi détenteurs d’un savoir sur le soin. En somme, les savoirs sur le soin apparaissent comme une recherche de sens, une mise en cohérence de la pathologie, inhérente à des mondes sociaux différents, mais qui se nourrissent les uns des autresTreatments for prostate cancer have led us to analyze how knowledge can be produced in cancer research. The different treatment options offered to the patient directly originate from scientific knowledge. At that point already, one can question the patient’s participation to the choice of his treatment. The patient is a figure who is socially constructed and medically produced. This figure only becomes significant in regard to the doctor’s professional role. The relation between those two actors – doctor and patient – has to be replaced in its context of a social structure of care. Social situation instituted from the necessary of care, as an answer to human suffering, the analysis shows the tensions that arise within the professional group of doctors. Issues of legitimacy and expertise have revealed the rivalry between urologists and oncologists. That rivalry shows mostly through the treatments which are offered. The knowledge used to legitimate one option or the other varies and is not exclusively scientific. Different bodies of knowledge take priority according to the survival (goal). Moreover those medical bodies of knowledge are not understood in the same way for each patient, as they themselves hold particular knowledge about care/cure. In the end, it appears the pieces of knowledge about cure/care inherently belong to different social worlds that feed from each other, and those different bodies of knowledge seek to make sense of illness
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Balit, Danièle. "Musiques discrètes : espace sonore, "White Cube", pratiques contextuelles et curatoriales." Paris 1, 2012. http://www.theses.fr/2012PA010538.
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La question du son dans les arts s'attache inévitablement à une réflexion sur les contextes de l'expérience artistique. Si les modèles traditionnels comme le white cube ou l'auditorium ne se montrent pas toujours adaptés pour accueillir les nouvelles typologies explorées dans le cadre du sonore, une véritable volonté de redessiner les équilibres des arts, d'en repenser les contextes et les modes de présentation est à reconnaître à l'origine de l'esthétique sonore. L'injonction à « libérer le son de la musique» (John Cage) n'est pas uniquement une invitation à s'opposer à l'auto-référencialité des codes musicaux; elle est à comprendre plus largement comme une volonté programmatique de repositionner l'art au- delà des barrières l'isolant des éléments contingents de la vie. Dans le contexte interdisciplinaire des née-avant-gardes, la dimension sonore offre des outils essentiels pour revendiquer une alternative à la règle moderniste. Entre visuel et auditif, entre structures spatiales et temporelles, une pluralité de stratégies d'hybridation remettent en cause les dispositifs conventionnels centrés sur l'objet artistique et sur son contenant, le cube blanc. Pourtant, les recherches sonores semblent dans le même temps faire réapparaitre l'essentialisme typique de la tradition musicale, au point de faire parler de néo-modernisme de l'art sonore. Ces aspects contradictoires sont symptomatiques de la complexité du « tournant sonore », phénomène que cette étude cherche à décrypter en retraçant quelques facteurs historiques, en analysant les discours théoriques, mais en posant aussi la question en termes curatoriaux. La documentation et l'analyse de quelques expériences que nous avons menées dans ce domaine offre l'occasion de mesurer les paradigmes qui émergent de l'analyse historique, ceux des pratiques extramurales par exemple, de l'art en situation, ou bien l'hypothèse de réciprocité entre son et site.
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Laverdière, Marco. "Le cadre juridique canadien et québécois relatif au développement parallèle de services privés de santé et l'article 7 de la Charte canadienne des droits et libertés." Sherbrooke : Université de Sherbrooke, 1998.
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Ruffiot, Marine. "Le cadre et ses aménagements en Thérapie Familiale Psychanalytique : dynamique et incidences de l'écart théorico-pratique dans la clinique familiale contemporaine." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE2130.
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Confrontés à de nouvelles réalités cliniques, institutionnelles et sociétales, les thérapeutes familiaux sont de plus en plus souvent amenés à aménager leurs « cadres », inaugurant de nouvelles configurations de Thérapie Familiale Psychanalytique qui interpellent les fondements épistémologiques du modèle de référence. L’auteure propose d’aborder cette problématique dans une double perspective de « travail auto-méta » (R. ROUSSILLON, 2001), recouvrant d’une part une réflexion sur les invariants fonctionnels fondamentaux de l’action analytique familiale ; d’autre part l’élaboration de quelques vertex à partir desquels appréhender de façon intégrative ses divers modes d’actualisation clinique contemporains. Sur la base de l’analyse différentielle des logiques processuelles à l’œuvre dans deux TFP « aménagées », cette recherche propose ainsi d’en dégager quelques axes de lecture transversale, en lien avec les modalités spécifiques de remise en transitionnalité et au travail de transitionnalité du fonctionnement psychique familial mobilisées dans des situations où les opérateurs thérapeutiques classiques ne sont pas accessibles, opérants ou exploitables par les familles. Sont plus particulièrement mises en réflexion les conditions auxquelles différentes formes d’expériences interactionnelles concrètes peuvent alors tenir fonction de suppléance au partage onirique familial, à la faveur d’un processus de co-construction, en trouvé/créé dans l’actualité du néo-groupe, des ressources transitionnalisantes du cadre thérapeutique. Suggérant de concevoir le « travail du préconscient familial » comme repère métapsychologique transversal aux différentes pratiques de TFP, l’auteur esquisse sur cette base quelques pistes de modélisation relatives à l’« effet d’outsight » (P. DUBOR, 1996) qui en organise le déploiement dans ces conditions où la dynamique interfantasmatique se soutient d’un détour par le réel extérieur d’étayages matérialisés (méta-cadre institutionnel, supports de médiations). Cet angle d’approche invite à réenvisager les préceptes de la « cure-type familiale », édifiés sur le modèle du rêve, à la lumière de voies et formes d’expression processuelle empruntant davantage au modèle du jeu mais relevant d’une même essence profondeFaced with new clinical, institutional and societal realities, family therapists are increasingly called upon to adjust their “settings”, introducing new configurations of Psychoanalytic Family Therapy which challenge the epistemological foundations of the reference model. The author proposes to approach this issue in an auto-meta twofold perspective, covering on one hand a reflection on the fundamental invariants of the psychoanalytic family action; on the other the development of some vertices from which to grasp in an integrative approach her contemporary patterns of clinical actualization. Based on the differential analysis of the processual logic at work in two “adjusted” PFT, this research proposes to identify axes for a transversal reading in connection with the specific terms of the family work of transitionality mobilized in situations where the classical therapeutic operators are not accessible, operative or usable by the families. Specifically set for thinking are the conditions for which various forms of concrete interactional experiences can then play the role of substitute for the family oniric sharing, through a co-constructive process, in a found/created mode within the neo-group, of the setting’s transitional resources. Suggesting to conceive the “family preconscious work” as a metapsychological reference transversal to the different PFT practices, the author sketches some modelling perspectives relating to the “outsight effect” that organizes its deployment in these conditions where the interfantasmatic dynamics support itself with a detour passing by the external reality of materialized shorings (institutional meta-setting, therapeutic mediums).This angle of approach invites to reconsider the “classical psychoanalytic family cure” precepts, built on the dream model, in the light of processual expression’s ways and forms taking more from the play model but belonging to the same profound essence
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Gbaguidi, David. "Modeles économétriques pour l'inflation : anticipations rationnelles et croyances adaptatives dans le cadre de la nouvelle courbe de philips keynesienne." Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX24014.
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Le premier chapitre consiste en une brève revue de littérature dont les éléments sont repris dans les différentes introductions des études empiriques proposées dans la suite de la thèse. L'objet de cet état des lieux est de fixer le cadre général des analyses macro-économétriques opérées dans la thèse. Ce cadre nous permet d'une part, d'envisager une adéquate intégration des anticipations des agents économiques dans le raisonnement ayant mené aux modèles keynésiens actuels et d'autre part, d'effectuer des estimations des principales versions de la courbe de Phillips introduites dans la littérature macro-économique post-seconde guerre mondiale. Dans cette optique, la thèse est constituée de trois études empiriques. Dans la première de ces études, nous nous plaçons au sein d'un cadre uni-varié et tentons de discriminer entre plusieurs spécifications, proposant différentes caractérisations économétriques de la dynamique du taux d'inflation U.S. Essentiellement, trois types de spécifications, théoriquement associés à trois évolutions possibles du taux d'inflation espéré (anticipé), sont mis à l'épreuve. Les résultats de cette première étude montrent que la dynamique du taux d'inflation peut être pertinemment décrite à l'aide d'un modèle à changements de (trois) régimes markoviens dans les dérives (Intercepts) d'un processus autorégressif (d'ordre deux), soit le modèle MSI(3)-AR(2). La deuxième étude s'opère dans le cadre multi-varié d'une Nouvelle Courbe de Phillips Keynésienne à Inflation tendancielle Positive (NKPC-PI). Au sein de ce cadre, la relation d'arbitrage Inflation/Activité réelle est estimée suivant une procédure en deux étapes. Dans la première, nous identifions des régimes distincts du taux d'inflation U.S. à l'aide d'un modèle à changements de (trois) régimes markoviens dans les dérives d'un processus vectoriel autorégressif (d'ordre deux), soit le modèle MSI(3)-VAR(2). Dans la seconde étape, nous estimons les paramètres structurels de cette économie keynésienne afin d'extraire la courbe de Phillips résultante des changements de régimes initialement identifiés. Les résultats de cette deuxième étude nous amènent à conclure à une non-négligeable instabilité de la courbe de Phillips au cours de la période post-seconde guerre mondiale. La troisième étude se présente comme un prolongement et/ou un approfondissement des deux premières. Aussi, dans sa première partie, nous revenons sur les dynamiques tendancielles individuelles des quatre variables intervenant dans le cadre de modélisation NKPC-PI. Les résultats issus de ces premières estimations en contextes uni-variés montrent que seule la dynamique du taux d'inflation et, dans une moindre mesure, celle du coût marginal réel semble obéir à des changements de régimes. La spécification retenue pour l'inflation est celle de la première étude (MSI(3)-AR(2)), tandis que la dynamique du coût marginal réel pourrait être approchée à l'aide d'un modèle à changements de (deux) régimes dans les dérives d'un processus autorégressif (d'ordre deux), soit le modèle MSI(2)-AR(2). Les dynamiques du taux d'actualisation nominal et du taux de croissance de l'output (les deux autres variables du modèle NKPC-PI) semblent, quant à elles, être assez bien caractérisées par des spécifications linéaires autorégressives à deux retards (AR(2)). Sur la base de ces premiers résultats, nous estimons, dans la deuxième partie de l'étude, la nouvelle courbe de Phillips keynésienne en considérant que les processus générateurs des quatre séries du modèle peuvent répondre à de possibles intégrations fractionnelles. Les résultats de ces dernières estimations montrent que la prise en compte simultanée des changements de régimes et de la longue mémoire dans les dynamiques des variables du modèle apporte certains éclairages sur l'évolution du débat mené autour de la relation d'arbitrage post-seconde guerre mondialeThis PhD thesis proposes, through her three articles, a macro-econometric framework of integrating, in the most adequate way to our sense, the expectations of the economic agents in the reasoning having led to current New-Keynesian models. Upon this specified frame of analysis, we evaluate the effectiveness of various versions of the Phillips curve introduced into the macroeconomic literature. The first study of this thesis takes place in a univariate context and we seek to determine an econometric model leading to best characterize the U.S inflation rate dynamic. In order to achieve this, three types of specifications, associated with three possible evolutions of the expected rate are considered. The first allows an overall instability of the trend or the expected inflation rate. The second considers an alternative specification in which the expected inflation rate is unstable in periodic segments of the sample. Finally, the last specification allows instability of a "mixed type" in which the trend inflation rate is assumed to be random or subject to a probability schema. The results of our study indicate that this last specification is the one that gives the most adequate characterization of the inflation rate dynamic. The inflation rate then appears generated by a second order autoregressive process with, on the one hand, unchanging lag coefficients and, on the other, an unconditional mean which switch between three global regimes of different frequencies of accession. Based on these first results, we extend the analysis in a multivariate framework. The main topics of the second paper are to challenge the rational nature of the agents expectations and the structural effectiveness of the behaviorally micro-based New Keynesian Phillips Curve with a Positive steady state Inflation (NKPC-PI). We then model the trade-off between the U.S inflation rate and a Unit Labor Cost-based measure of the real activity through Markov Switching - Vectorial AutoRegressive (MS-VAR) specifications. These specifications allow to adequately capturing the rationality in the agents expectations process as they underlie a finite number of expected inflation rate regimes, which highlight the agents adaptive beliefs on the achievements of these regimes. Moreover, the results confirm the structural stability of the NKPC-PI over the inflation rate regimes as its deep parameters seem to be unaffected by the regimes switching (Cogley & Sbordone (2005) and Groen & Mumtaz (2008)). In the third study, we extend the analysis of the Phillips curve trade-off. First, we look at determining econometrics models leading to characterize the dynamics of all the variables underlying the trade-off in univariate contexts. As a result, it appears that an adequate way to characterize the agents expectations regarding the dynamics of these variables is to consider a combination of some fixed levels (regimes) in the variables evolutions with an agents adaptive beliefs notion. Finally, based on the implied expectations values of the variables, we show that the Phillips curve seems to disappear when the impact of the expected inflation rate on its current value converges to its long-term value
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Dorval, Geneviève. "La transition du curatif aux soins de fin de vie en néonatologie : une ethnographie de la prise de décision chez les soignants." Thèse, 2016. http://hdl.handle.net/1866/18401.
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Ce mémoire de maîtrise en anthropologie est le résultat d’une recherche de terrain menée au service de néonatologie du CHU Sainte-Justine et ayant pour objectif de documenter les pratiques décisionnelles entourant l’arrêt des traitements curatifs chez les patients. La fin de vie de ces patients est traversée par des enjeux de nature éthique, socioculturelle et professionnelle. Par le biais d’observations prolongées et d’entretiens menés auprès de soignants de ce service, ces fins de vie se sont révélées tissées d’incertitude et propices aux divergences d’opinions. Loin d’être distribuées de manière arbitraire, ces divergences se dessinent souvent en fonction des corps de métiers. Elles ont donc été étudiées en relation avec l’organisation du travail en néonatologie pour saisir l’influence qu’exerce cette dernière sur la formation des valeurs et des postures morales des soignants. Les rapports qu’entretiennent les professionnels avec l’incertitude, ainsi que le partage (ou non) de la prise de décision au sein de l’équipe soignante se rattachent à ces postures morales et dévoilent des dynamiques sociales et organisationnelles à l’oeuvre dans ce service hospitalier. En dernier lieu, le travail en néonatologie fut observé à la loupe des dimensions cure et care des soins de santé. Depuis cette optique, la fin de vie apparaît comme une occasion de prise en charge qui reconnaît la singularité et l’humanité des soignants comme des soignés.This master's thesis in anthropology is the result of fieldwork conducted in the neonatal intensive care unit of the CHU Sainte-Justine. It aims to document the decision-making practices regarding the withdrawal of life-sustaining interventions. The patients’ end-of-life treatment decisions are underpinned by ethical, socio-cultural, and professional issues. Through extended observations and interviews with caregivers from this service, these situations have proven to be riddled with uncertainty and characterized by differences of opinion. Far from being randomly distributed, these differences are generally divided along the lines of the medical and nursing professions. This study therefore concentrates on the organization of work in neonatology to better understand its influence on the formation of values and moral stances. The healthcare professionals’ relationship with uncertainty, as well as the choice to share or not the decision-making process within the healthcare team, are connected to these moral positions and reveal social and organizational dynamics at work within this hospital department. Finally, work in neonatology is observed through the lens of the cure and care dimensions of healthcare. From this perspective, end-of-life situations appear as an opportunity to offer care while recognizing the singularity and humanity of both caregivers and care receivers.
Books on the topic "Cure et care"
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Ottawa Protestant Home for the Aged. Constitution and by-laws of the Ottawa Protestant Home for the Aged. [Ottawa?: s.n.], 1987.
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Hommel, Suzanne. L' histoire du sujet dans l'histoire du siècle: Lectures de textes, lectures de cures avec Freud et Lacan. Tours (France): Soleil carré, 1993.
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Tam, Giulio Maria. La Pseudo-Restauration: [métamorphose de la Révolution dans l'Eglise: le Pape, la Curie romaine, le Card. Ratzinger, l'Opus Dei et compagnie... ] : [... les hypothèses futures...: la naissance de la prochaine Eglise conservatrice et la prochaine fausse chrétienté]. Sion: Editions les Amis de saint François de Sales, 1995.
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Agarwal, Rajiv, and Andrew S. Epstein. Expectations about Effects of Chemotherapy in Patients with Advanced Cancer (DRAFT). Edited by Nathan A. Gray and Thomas W. LeBlanc. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190658618.003.0033.
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This chapter reviews the Weeks et al. secondary analysis of data from the Cancer Care Outcomes Research and Surveillance (CanCORS) prospective cohort, evaluating the expectations of patients who receive chemotherapy for incurable metastatic lung or colorectal cancer. Patients’ understanding of the effectiveness of chemotherapy for providing cure, life extension, and symptom relief were measured. The researchers also investigated the clinical, sociodemographic, and health system factors that were associated with inaccurate expectations on the curative potential of chemotherapy. The study demonstrated that most patients with metastatic lung or colorectal cancer believed that chemotherapy was likely to cure their disease. Colorectal cancer, non-white race, nonintegrated health care networks, and high physician communication scores were independently associated with inaccurate expectations. These findings highlight that understanding the goals of chemotherapy is both important and necessary for patients with incurable cancers to make informed treatment decisions.
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S, Wunderlich Gooloo, Sloan Frank A, Davis Carolyne K, and Institute of Medicine (U.S.). Committee on the Adequacy of Nurse Staffing in Hospitals and Nursing Homes., eds. Nursing staff in hospitals and nursing homes: Is it adequate? Washington, D.C: National Academy Press, 1996.
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Institute of Medicine (Corporate Author), Gooloo S. Wunderlich (Editor), Frank A. Sloan (Editor), and Carolyne K. Davis (Editor), eds. Nursing Staff in Hospitals and Nursing Homes: Is It Adequate? National Academy Press, 1996.
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Curti, M., C. Klersy, C. Tinelli, and S. Visentin. "Le Role D’une Bibliotheque Scientifique Dans L’evaluation de la Recherche Dans le Cadre D’un Institut Scientifique Pour L’hospitalisation et Les Soins (Istituto di Ricovero E Cura A Carattere Scientifico)." In Health Information — New Possibilities, 134–36. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0093-9_40.
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Mino, Jean-Christophe. "Cure et care, indissociablement." In Questions de soin, 71–79. Presses Universitaires de France, 2015. http://dx.doi.org/10.3917/puf.worms.2015.01.0071.
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Pombet, Thibaud. "2. L’articulation du cure et du care au prisme de la reconnaissance. Une étude des dispositifs de soins dédiés aux « AJA » atteints de cancer." In Le cancer : un regard sociologique, 28–38. La Découverte, 2018. http://dx.doi.org/10.3917/dec.norb.2018.01.0028.
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Hinton, Veronica J. "The Dystrophinopathies." In Cognitive and Behavioral Abnormalities of Pediatric Diseases. Oxford University Press, 2010. http://dx.doi.org/10.1093/oso/9780195342680.003.0056.
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The dystrophinopathies, including Duchenne and Becker muscular dystrophies, are X-linked, developmental neuromuscular disorders. The dystrophinopathies are so named because of their effect on the production of the protein dystrophin, and are known primarily as muscle diseases in males that present with progressive weakness that is eventually fatal. To date, there is no cure for the dystrophinopathies, and treatment focuses on slowing the disease progression. Medical management is complex and multifaceted. It includes care for neuromuscular, orthopedic, rehabilitative, nutritional, respiratory, cardiac, gastrointestinal, psychological, and palliative aspects of the disease. The devastating physical toll of the diseases is well known. In contrast, the associated cognitive and behavioral abnormalities are less familiar to most clinicians. Nonetheless, the cognitive and behavioral attributes of the dystrophinopathies impact on the affected individual’s and his family’s functioning in far-ranging ways. More importantly, identifying any associated cognitive and behavioral abnormalities early, and providing appropriate interventions, can contribute substantially to an affected individual’s quality of life. The dystrophinopathies are the most common neuromuscular diseases of childhood, affect all ethnic groups, and have an estimated overall prevalence of 63 per million (Emery 1991; Emery 1992). Positive diagnosis for the Duchenne muscular dystrophy (DMD, the more severe form) is based on the following criteria: (a) male; (b) onset of weakness before age 5; (c) initial proximal muscle weakness; (d) muscle hypertrophy, most prominent in the calves; (e) elevated creatine kinase activity of at least 10 times above the upper limit of normal; and either (f) positive histopathological confirmation by muscle biopsy or (g) molecular characterization of a mutation within the gene for dystrophin. Approximately 1 in 3,500 live male births meet these criteria (Emery 1992). The diagnosis of Becker muscular dystrophy (BMD, the less severe form) is clinically determined by those children who remain walking at age 12. Individuals with BMD have a slower course and considerably longer lifespan than those with DMD. Natural history studies have been conducted to characterize the course of the disease. The Clinical Investigation of Duchenne Dystrophy group (CIDD) followed more than 200 individuals affected with DMD for more than 10 years (Brooke et al. 1983; Hyser et al. 1987; Mendell et al. 1987).
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Conte, Paola M., and Gary A. Walco. "Pain and Procedure Management." In Comprehensive Handbook of Childhood Cancer and Sickle Cell Disease. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195169850.003.0012.
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Pediatric cancer treatment has seen an incredible increase in survival rates, so that, overall, 75% of children diagnosed with cancer will achieve longterm survival and cure (Ries et al., 2003). An estimated 9,000 new cases of childhood cancer are expected to occur each year (American Cancer Society, 2003), among which one third involve leukemia and one quarter involve a central nervous system (CNS) tumor. Other diagnoses include lymphoma, sympathetic nerve tumor, soft tissue sarcoma, bone tumor, germ cell tumor, and retinoblastoma (Gustafsson, Langmark, Pihkala, Verdier, & Lilleaas, 1998). Although less than 1% of all cancer cases are children (Stiller & Draper, 1998), pediatric cancer causes more deaths among children in industrialized nations than any other disease and after accidents is the leading cause of death among children 1–14 years of age (American Cancer Society, 2003). Improvement in survival rates is the result of increasingly aggressive treatment protocols. With these advances, however, has come greater need for supportive care to address the array of treatment adverse side effects, including pain (Gustafsson et al., 1998). In the United States, 94% of children are treated at centers that are members of a collaborative clinical trials research consortium (American Cancer Society, 2003), implying that treatment protocols, including approaches to preventing and managing adverse side effects, are the norm. To a great degree, however, management of pain has been exempt from this standardized and rigorous approach. This is somewhat ironic and unfortunate as children with cancer reported pain to be the most feared symptom they experience (Enskar, Carlsson, Golsater, Hamrin, & Kreuger, 1997). Undertreatment of pain in children is hardly unique to the cancer population (Schechter, Berde, & Yaster, 2003), and is generally because of limited information available to clinicians, persistence of misinformation about pain in children, and attitudes that denigrate adequate pain management. For example, there is a lack of research on pharmacological interventions for pain in children. Although it is agreed that randomized clinical trials for pain prevention and management would be helpful to address issues of safety, efficacy, pharmacodynamics, and pharmacokinetics in pediatrics, the pragmatics and ethics of such research, especially in very young children, have limited such progress (Berde, Brennan, & Raja, 2003).
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Martin, Yves. "The Engravings of Gouy: France’s Northernmost Decorated Cave." In Palaeolithic Cave Art at Creswell Crags in European Context. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199299171.003.0014.
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For almost half a century the cave of Gouy, discovered in 1956, was the northernmost Palaeolithic decorated cave known in western Europe. Because of its originality and its geographical location, it overturned our knowledge, as has, today, in its turn, the magnificent discovery of the first British parietal Palaeolithic art which has at last been revealed in Church Hole, at Creswell Crags, in Nottinghamshire (Bahn et al. 2003). This revelation extends the distribution of Palaeolithic parietal art further to the north and the west. Following this major event, the possibilities of similar explorations have been reinforced. Even more than before, other discoveries can today be foreseen, not only in the neighbouring regions but very probably also some day soon in Belgium and Germany. Before the authenticity of its decoration was accepted unanimously, Gouy, like Church Hole, was not exempt from scepticism. This attitude inevitably accompanies discoveries which call into question our knowledge in all fields of research. However, doubt is necessary and, in some ways, it is obviously very useful. In particular, it incites one to gather together all the elements that support the accuracy of any new thing. Where Gouy is concerned, there were two principal objections which counted against it and perplexed researchers. The most frequently used negative argument from the very start was its geographical location. From 1946 to 1956 the Grotte du Cheval, at Arcysur- Cure in Bourgogne (Bailloud 1946), was the northernmost decorated cave. Even this cave appeared very eccentric at this latitude. Consequently, far away from the great regions of parietal art, Gouy could not be attributed to the Upper Palaeolithic. Moreover, the (recognized) open-air occupations of the Upper Palaeolithic and Final Upper Palaeolithic were thought to be virtually non-existent (in the regions close to Gouy). This view already ignored the proximity of the rockshelters of Métreville, near Saint-Pierre d’Autils, where there had been a ‘Magdalenian’ industry associated with mammoth bones (Poulain 1904, 1905). In reply to this opinion, which was still widespread in recent times, Gerhard Bosinski proclaimed in public, ‘it is . . . (the Final Upper Palaeolithic), look for it . . . in your region . . .
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Kobayashi, Shiro, Soo-Ik Oh, and Taylan Altan. "Plasticity and Viscoplasticity." In Metal Forming and the Finite-Element Method. Oxford University Press, 1989. http://dx.doi.org/10.1093/oso/9780195044027.003.0007.
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The theory of plasticity describes the mechanics of deformation in plastically deforming solids, and, as applied to metals and alloys, it is based on experimental studies of the relations between stresses and strains under simple loading conditions. The theory described here assumes the ideal plastic body for which the Bauschinger effect and size effects are neglected. The theory also is valid only at temperatures for which recovery, creep, and thermal phenomena can be neglected. The basic theory of classical plasticity is described by Hill, and also in References, in addition to the books listed in Chap. 1. A concise description of the general plasticity theory necessary for metal forming is given in the book by Johnson et al.. In this chapter, certain important aspects of the theory are presented in order to elucidate the developments of the finite-element solutions of metal-forming problems discussed in this book. First, various measures of stress and strain are introduced. Then, the governing equations for plastic deformation and principles that are the foundations for the analysis are described. The extension of the theory of plasticity to time-dependent theory of viscoplasticity is outlined in Section 4.8. Particular references are made, in Sections 4.3 through 4.7, to the books by Hill and by Johnson and Mellor, and to the section on general plasticity theory in the book by Johnson et al.. The basic quantities that may be used to describe the mechanics of deformation when a body deforms from one configuration to another under an external load are the stress, strain, and strain-rate. Various measures of these quantities are defined, depending upon how closely formulations represent actual situations. Although it is not possible to provide the complete mathematical formulations in one-dimensional deformation, these measures are introduced for the case of simple uniaxial tension. Consider the uniaxial tension test of a round specimen whose initial length is l0 and cross-sectional area is A0. The specimen is stretched in the axial direction by the force P to the length l and the cross-sectional area A at time t, as shown in Fig. 4.1. The response of the material is recorded as the load-displacement curve, and converted to the stress-strain curve as shown in the figure. The deformation is assumed to be homogeneous until necking begins.
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Kandler, Anne, and Fabio Caccioli. "Networks, Homophily, and the Spread of Innovations." In The Connected Past. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780198748519.003.0016.
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The question of how and why innovations spread through populations has been the focus of extensive research in various scientific disciplines over recent decades. Generally, innovation diffusion is defined as the process whereby a few members of a social system initially adopt an innovation, then over time more individuals adopt until all (or most) members have adopted the new idea (e.g. Rogers 2003; Ryan and Gross 1943; Valente 1993). Anthropologists and archaeologists have argued that this process is one of the most important processes in cultural evolution (Richerson et al. 1996) and much work has been devoted to describing and analysing the temporal and spatial patterns of the spread of novel techniques and ideas from a particular source to their present distributions. Classic case studies include the spread of agricultural inventions such as hybrid corn (e.g. Griliches 1957; Ryan and Gross 1943), the spread of historic gravestone motifs in New England (Dethlefsen and Deetz 1966; Scholnick 2012), and the spread of bow and arrow technology (Bettinger and Eerkins 1999). (For a more comprehensive list see Rogers and Shoemaker (1971) who reviewed 1,500 studies of innovation diffusion.) Interestingly, the temporal diffusion dynamic in almost all case studies is characterized by an S-shaped diffusion curve describing the fraction of the population which has adopted the innovation at a certain point in time. Similarly, the spatial dynamics tend to resemble travelling wave-like patterns (see Steele 2009 for examples). The basic puzzle posed by innovation diffusion is the observed lag between an innovation’s first appearance and its general acceptance within a population (Young 2009). In other words, what are the individual-level mechanisms that give rise to the observed population-level pattern? Again, scientific fields as diverse as economics/marketing science (e.g. Bass 1969; Van den Bulte and Stremersch 2004; Young 2009), geography (e.g. Hägerstrand 1967), or social science (e.g. Henrich 2001; Steele 2009; Valente 1996; Watts 2002) offer interesting insights into this question without reaching a consensus about the general nature of individual adoption decisions. In archaeological and anthropological applications, population-level patterns inferred from the archaeological record, such as adoption curves, are often the only direct evidence about past cultural traditions (Shennan 2011).
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Doveton, John H. "Pore-System Facies: Pore Throats and Pore Bodies." In Principles of Mathematical Petrophysics. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199978045.003.0011.
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When Archie (1950) first introduced the term “petrophysics,” he outlined a tentative petrophysical system “. . . which revolves mainly around pore-size distribution which defines the capillary pressure curve, permeability, and porosity.” As such, a pore distribution does not necessarily coincide with a specific rock type. Different lithologies might contain similar pore distributions and a single lithology might be characterized by several distinctive pore distributions. In the latter case, these differences could be used as the basis for a lithofacies subdivision, where the criteria were defined by pore-network properties rather than more conventional fabric observations. Often, there will be a substantial commonality between the two approaches, because the pore network and rock framework are complementary. The term “petrofacies” (which comes from “petrophysical facies”) extends the facies concept to pore networks. Although this name is commonly (but not exclusively) used for this purpose, the range of published definitions is fairly broad, as pointed out by Sullivan et al. (2003). Some authors intermingle notions of petrofacies with electrofacies and lithofacies, which is understandable, because in many reservoirs there are strong intercorrelations between them. In this text, we distinguish between electrofacies, either seemingly natural petrophysical log associations found by unsupervised methods, or those determined from lithofacies by supervised methods. Lithofacies are generally recognized by standard visual observations of a core, although they may be defined by reference to distinctive porosity-permeability associations (petrofacies) in core measurements. The two fundamental reservoir components of pore microarchitecture are essentially the same as the spatial elements of conventional architecture: the relative sizes and arrangement of the pore bodies (rooms) and the pore throats (doors between rooms). In an oil or gas reservoir, the volume of pore space contained in the pore bodies dictates the total storage capacity, while the access of hydrocarbon to the pore bodies is regulated by the size of the linking pore throats. Realistic pore-network models for characterizing hydrocarbon recovery from reservoirs are, appropriately, labyrinthine in their intricacy. However, the key pore attributes that are the focus of petrophysical applications are the size distributions of the pore bodies and pore throats, together with the aspect ratio of pore-body size to pore-throat size.
Conference papers on the topic "Cure et care"
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Lin, Jian, and Robert G. Parker. "Natural Frequency Veering Patterns of Planetary Gears Under Design Parameter Variation." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14438.
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Abstract Noise and vibration reduction is a critical concern in planetary gear applications. During the design process, system parameters are varied to evaluate alternative design choices, avoid resonances, optimize load distribution, and reduce weight. It is important to characterize the effects of parameter variations on the natural frequencies and vibration modes for effective vibration tuning. In planetary gear dynamic models (Figure 1), the key design parameters include the mesh stiffness, support/bearing stiffness, component mass, and moment of inertia. Some plots of natural frequencies versus planetary gear parameters are presented by Cunliffe et al. (1974), Botman (1976), Kahraman (1994), and Saada and Velex (1995). Lin and Parker (1999a) analytically characterized the unique, highly-structured properties of planetary gear natural frequency spectra and vibration modes. They also derived simple, closed-form expressions for the sensitivities of natural frequencies and vibration modes to these parameters (Lin and Parker, 1999b). The natural frequency plots in the above literature show natural frequency veering phenomena where two eigenvalue loci approach each other as a parameter is varied but then abruptly veer away like two similar charges repelling (Figure 2a). The phenomenon has been extensively studied (Leissa, 1974; Perkins and Mote, 1986; Pierre, 1988; Chen and Ginsberg, 1992; Happawana et al., 1998). The vibration modes of the veering eigenvalues are strongly coupled and undergo dramatic changes in the veering neighborhood. Eigenvalue veering is also related to mode localization that can occur when disorder is introduced into nominally symmetric systems like turbine blades, space antennae, multi-span beams and other structures (Pierre, 1988). In the case of especially sharp veering, it is sometimes difficult to distinguish between intersection and veering just by observing eigenvalue plots. Curve veering/crossing complexity obstructs the tracing of eigenvalue loci under parameter changes. Also, when multiple curves veer or intersect close together (Figure 3), strong modal coupling (and associated operating condition response changes) occurs that is not identifiable from frequency loci plots. The objective of this work is to analytically characterize the rules of eigenvalue veering in planetary gear vibration. The special veering patterns derived here help to trace natural frequencies and examine impacts of design parameters on vibration. These veering patterns, combined with the unique modal properties (Lin and Parker, 1999a) and the eigensensitivies analysis (Lin and Parker, 1999b), provide designers considerable insight into planetary gear free vibration.
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Poon, B., D. Rittel, and G. Ravichandran. "A Reexamination of the Extraction of Material Properties Using Nanoindentation." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59413.
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The paper reexamines the extraction of material properties using nanoindentation for linearly elastic and elastic-plastic materials. The paper considers indentation performed using a rigid conical indenter, as follows. Linearly elastic solids: The reduction of nanoindentation test data of elastic solids is usually processed using Sneddon’s relation [1], which assumes a linearly elastic infinite half space and an infinitely sharp indenter tip. These assumptions are violated in practical indentation experiments. Since most of the research on the extraction of material properties relies heavily on numerical simulations, we used them to investigate the specimen dimensions required for it to qualify as an infinite body, and the indentation conditions for finite tip radius effect to be negligible. The outcome of this part is firstly, the definition of a “converged” 2D geometry so that additional magnification of the numerical model does not influence the load-displacement curve, and secondly, an explicit relationship between the measured load and displacement that takes into account the finite tip radius. Elastic-plastic solids: Here, the main data reduction technique was proposed by Pharr et al. [2], assuming elastic unloading of a plastic nanoindentation. We investigated the effects of finite tip radius in elastic-plastic indentations and found that the accuracy of the prediction is currently limited by the accurate determination of the projected contact area. This point will be discussed and a new experimental technique to measure the projected contact area will be proposed. The Poisson’s ratio effect in elastic-plastic indentations is found to be different from the linearly elastic case. This leads to the discussion on the applicability of the correction factor (for Poisson’s ratio effect) derived in linear elastic indentations, on elastic-plastic indentations. Finally, a technique to obtain an upper bound estimate of the yield stress for the indented elastic-plastic material (which is an exact estimation for non-hardening materials), will be presented.
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Yamamoto, Cassio T., Rodrigo A. Fregonesi, Julio R. Meneghini, and Fabio Saltara. "Numerical Simulations of the Flow Around Flexible Cylinders." In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28154.
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In the offshore industry fluids are conveyed from the seabed to the platform through slender structures named risers. These risers are subject to shear and oscillatory flows due to currents and waves respectively, flows with a very high degree of complexity, with changes of intensity and direction the deeper the water depth. The main purpose of this work is to investigate the hydroelastic interactions which take place between flexible cylinders and fluid forces. The cylinders are subject to uniform flow, and the hydrodynamic forces are estimated by CFD, in a quasi three-dimensional fashion. This article presents the results of an investigation being carried out at the University of Sa˜o Paulo and sponsored by the Brazilian Oil Company Petrobras. In this research a discrete vortex method is used to simulate the flow around a flexible cylinder. A description of this method can be found at Yamamoto et al. (OMAE 2001). A finite element structural model based on the Euler-Bernoulli beam theory was developed. In order to evaluate the dynamic response, a general equation of motion is solved through a numerical integration scheme in the time domain. The hydrodynamic forces are evaluated in two-dimensional strips. The technique used is the Discrete Vortex Method, which is a Lagrangian numerical scheme to simulate an incompressible and viscous fluid flow. The calculations are compared with experiments of a cantilever flexible cylinder immersed in a current, see Fujarra [6]. The reduced velocity vs. non-dimensional amplitude curve obtained in our calculations is compared with the experimental results. Visualizations of the wake indicate a hybrid mode of vortex shedding along the span. A 2S mode is found in regions of low amplitudes, changing to a 2P mode in the regions o larger amplitudes. The position of the transition of the modes varies with the reduced velocity. A practical case of marine risers is also presented. In this case the results for various uniform currents acting on a single, flexible cylinder, representing a riser of 120m with 100m under water, are shown. Envelopes of maximum and minimum in-line and transverse displacements are presented.
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Yang, Xiaofan, and Z. Charlie Zheng. "Continuum/Nano-Scale Simulation of Surface Diffusion Process in Flow." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62960.
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Fluid transport with diffusion through micro-/nano-channels is found in many natural phenomena and industrial processes, including fluid transport or diffusion through nano-materials, molecular/atomistic transfer across nuclear pores or in the MEMS devices among other applications. Those nano-pores can be treated as nano-channels in the thin layers of the membranes. The transport phenomena of fluid in such small confined channels, usually in the size of ten molecular diameters or less, differs significantly from its bulk behaviors and cannot be described with continuum theory. In this case, molecular dynamics (MD) simulation, rather than continuum methods, is better suited to study the phenomena. The surface diffusion, related to both the fluid and solid material properties and the flow rate, can be used as a parameter for estimating the adsorbing capacity of a porous nano-material. The transport of fluids through porous materials occurs mainly by diffusion. In this study, a molecular-continuum hybrid scheme is used for the study of the diffusion in a representative Couette flow problem. By varying the velocity of the moving-solid wall, we investigated the effect of the shearing condition on the mass flux going through the pores. The relationship of the physical mechanisms and the transport phenomena (e.g. Fick’s law) were then linked among the different length scales. Activated carbon with its high surface area has been emerging as a promising candidate for an adsorbent due to not only its stable thermodynamic and mechanical properties but also its homogenous and isotropic porous distribution and relatively even pore size. In this study, we focus on the characteristics of the permeation and the adsorption process between different gases and the carbon substrate under various shearing conditions. The investigation of the diffusion process of fluids through the pores of the nano-materials has become an interesting topic in recent decades. This investigation has been divided into two major areas: 1) the diffusivity estimation and 2) the transient diffusion rate. We apply a continuum/MD hybrid scheme to a model problem of various gases transport through a carbon substrate with several pores in a channel flow under different shear rates. Instead of inserting and deleting particles from the control volumes used in the DCV-GCMD method, we keep the number of particles in the simulation system constant. The interactions between fluid/fluid, fluid/solid and solid/solid are all assumed to be under Lennard-Jones potentials. In the modeled Couette flow, the two solid walls are constructed with nano-pores that allow fluids to go through the substrate to study the transient diffusion rate (flux). Before simulating the fluid transport through the nano-pores, we need to validate the natural diffusion properties of the bulk fluid. To do this, a system (as a cube) consisting of pure liquid argon molecules is used to perform the pure MD simulation. The radial distribution function (RDF) is used as the parameter to verify the natural diffusion of the liquid argon fluid in the bulk flow, which is a structural correlation. It describes the spherically averaged local organization around any given molecule. Figure 1 shows a good comparison of the radial distribution functions between the MD prediction and the experimental measurement of Eisenstein and Gingrich (1942). By comparing our calculation to Wu et al. (2008) under similar circumstances, we found that the average (from 8 pores) and corrected mass flux J · (RTh) is linearly proportional to the average pressure gradient along the pore. And the slope of this relationship is the transport diffusivity, which is 4.6 × 10−7m2/s under 273K and 4.9 × 10−7m2/s under 300K. This indicates that the current simulation follows the Fick’s law exactly. Similarly, for other gases, the same linear relationships can also be obtained. These calculations are listed in Table 1 that shows the transport diffusivity increases with temperature. The mass fluxes of three gases at various pore widths are calculated as shown in Fig. 2. Generally, with larger pores, the mass fluxes increase. However, among three gases, the increase of H2 is much faster than the other two gases because of hydrogen’s smaller molecular size. In another word, smaller molecules as H2 have faster diffusion rates during the adsorption process.