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Статті в журналах з теми "Temps d’arrêt"
Lavergne, Marc. "Soudan : temps d’arrêt ou nouveau départ ?" Esprit Sptmbr, no. 9 (2019): 25. http://dx.doi.org/10.3917/espri.1909.0025.
Повний текст джерелаSchmitt, Jean-Claude. "Broder les rythmes." rythmer, no. 16 (April 11, 2011): 23–34. http://dx.doi.org/10.7202/1001954ar.
Повний текст джерелаTorreilles, Claire. "œuvre occitane d’Andrée-Paule Lafont." Voix Plurielles 19, no. 2.1 (November 26, 2022): 111–30. http://dx.doi.org/10.26522/vp.v19i2.4107.
Повний текст джерелаVincent, Nadine. "Arrêt ou stop ? Retour sur près d’un siècle de débat dans la presse écrite au Québec." Francophonies d'Amérique, no. 42-43 (November 26, 2018): 23–45. http://dx.doi.org/10.7202/1054034ar.
Повний текст джерелаLavoie, Marc, and Maurice Saint-Germain. "Disparités linguistiques de revenu au Canada selon la langue parlée à la maison." Articles 67, no. 3 (February 27, 2009): 356–80. http://dx.doi.org/10.7202/602042ar.
Повний текст джерелаCicchelli-Pugeault, Catherine. "Reconnaissance de soi et rapport au temps dans l’entretien sociologique auprès de femmes de plus de cinquante ans. Temps d’arrêt sur une image identitaire." I Temporalités et genre, no. 54 (April 27, 2006): 39–48. http://dx.doi.org/10.7202/012858ar.
Повний текст джерелаAcier, Didier, Françoise Facy, Jean-Luc Pilet, and Carmen Chaillou. "L’orientation temporelle et la consommation de substances psychoactives des adolescents et jeunes adultes." Drogues, santé et société 13, no. 2 (July 15, 2015): 49–65. http://dx.doi.org/10.7202/1032272ar.
Повний текст джерелаVéronneau, Pierre. "Cinéma ambulant et implantation urbaine : l’activité de William Shaw dans le contexte des Cantons-de-l’Est." Cinémas 6, no. 1 (February 25, 2011): 47–80. http://dx.doi.org/10.7202/1000959ar.
Повний текст джерелаDenis, Jennifer, Erina Kouaovi, Jean-Marc Priels, and Michel Trine. "Entendeurs de voix." Cahiers de psychologie clinique 61, no. 2 (September 12, 2023): 179–201. http://dx.doi.org/10.3917/cpc.061.0179.
Повний текст джерелаJouffroy, Romain, Pressena Alexandre, Laure Castres Saint Martin, Rado Idialisoa, Lionel Lamhaut, Pascal Philippe, Alexandra Guyard, Alain Rozenberg, Pierre Carli, and Benoit Vivien. "Peut-on chez un patient en asystolie anticiper la notion d’arrêt cardiaque réfractaire avec un autre élément objectif que le temps ?" Anesthésie & Réanimation 1 (September 2015): A290. http://dx.doi.org/10.1016/j.anrea.2015.07.442.
Повний текст джерелаДисертації з теми "Temps d’arrêt"
Stazhynski, Uladzislau. "Discrétisation de processus à des temps d’arrêt et Quantification d'incertitude pour des algorithmes stochastiques." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX088/document.
Повний текст джерелаThis thesis consists of two parts which study two separate subjects. Chapters 1-4 are devoted to the problem of processes discretization at stopping times. In Chapter 1 we study the optimal discretization error of stochastic integrals, driven by a multidimensional continuous Brownian semimartingale. In this setting we establish a path wise lower bound for the renormalized quadratic variation of the error and we provide a sequence of discretization stopping times, which is asymptotically optimal. The latter is defined as hitting times of random ellipsoids by the semimartingale at hand. In comparison with previous available results, we allow a quite large class of semimartingales and we prove that the asymptotic lower bound is attainable. In Chapter 2 we study the model-adaptive optimal discretization error of stochastic integrals. In Chapter 1 the construction of the optimal strategy involved the knowledge about the diffusion coefficient of the semimartingale under study. In this work we provide a model-adaptive asymptotically optimal discretization strategy that does not require any prior knowledge about the model. In Chapter 3 we study the convergence in distribution of renormalized discretization errors of Ito processes for a concrete general class of random discretization grids given by stopping times. Previous works on the subject only treat the case of dimension 1. Moreover they either focus on particular cases of grids, or provide results under quite abstract assumptions with implicitly specified limit distribution. At the contrast we provide explicitly the limit distribution in a tractable form in terms of the underlying model. The results hold both for multidimensional processes and general multidimensional error terms. In Chapter 4 we study the problem of parametric inference for diffusions based on observations at random stopping times. We work in the asymptotic framework of high frequency data over a fixed horizon. Previous works on the subject consider only deterministic, strongly predictable or random, independent of the process, observation times, and do not cover our setting. Under mild assumptions we construct a consistent sequence of estimators, for a large class of stopping time observation grids. Further we carry out the asymptotic analysis of the estimation error and establish a Central Limit Theorem (CLT) with a mixed Gaussian limit. In addition, in the case of a 1-dimensional parameter, for any sequence of estimators verifying CLT conditions without bias, we prove a uniform a.s. lower bound on the asymptotic variance, and show that this bound is sharp. In Chapters 5-6 we study the problem of uncertainty quantification for stochastic approximation limits. In Chapter 5 we analyze the uncertainty quantification for the limit of a Stochastic Approximation (SA) algorithm. In our setup, this limit is defined as the zero of a function given by an expectation. The expectation is taken w.r.t. a random variable for which the model is assumed to depend on an uncertain parameter. We consider the SA limit as a function of this parameter. We introduce the so-called Uncertainty for SA (USA) algorithm, an SA algorithm in increasing dimension for computing the basis coefficients of a chaos expansion of this function on an orthogonal basis of a suitable Hilbert space. The almost-sure and Lp convergences of USA, in the Hilbert space, are established under mild, tractable conditions. In Chapter 6 we analyse the L2-convergence rate of the USA algorithm designed in Chapter 5.The analysis is non-trivial due to infinite dimensionality of the procedure. Moreover, our setting is not covered by the previous works on infinite dimensional SA. The obtained rate depends non-trivially on the model and the design parameters of the algorithm. Its knowledge enables optimization of the dimension growth speed in the USA algorithm, which is the key factor of its efficient performance
Brunin, Maxime. "Étude du compromis précision statistique-temps de calcul." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1I001/document.
Повний текст джерелаIn the current context, we need to develop algorithms which are able to treat voluminous data with a short computation time. For instance, the dynamic programming applied to the change-point detection problem in the distribution can not treat quickly data with a sample size greater than $10^{6}$. The iterative algorithms provide an ordered family of estimators indexed by the number of iterations. In this thesis, we have studied statistically this family of estimators in oder to select one of them with good statistics performance and a low computation cost. To this end, we have followed the approach using the stopping rules to suggest an estimator within the framework of the change-point detection problem in the distribution and the linear regression problem. We use to do a lot of iterations to compute an usual estimator. A stopping rule is the iteration to which we stop the algorithm in oder to limit overfitting whose some usual estimators suffer from. By stopping the algorithm earlier, the stopping rules enable also to save computation time. Under time constraint, we may have no time to iterate until the stopping rule. In this context, we have studied the optimal choice of the number of iterations and the sample size to reach an optimal accuracy. Simulations highlight the trade-off between the number of iterations and the sample size in order to reach an optimal accuracy under time constraint
Maliyov, Ivan. "Irradiation ionique des matériaux : dynamique des excitations électroniques en temps réel." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS434.
Повний текст джерелаIonic irradiation damage in condensed matter is central to many technological applications: materials in nuclear plants of course, but also electronics and solar panels in space that are subjected to the cosmic irradiation, living matter treated by radiotherapy to eliminate tumors, etc. For all these subjects, an accurate knowledge of the interaction between the irradiating projectile and the target is crucial. The interaction between the irradiating ion and the target material can be described by a stopping power, defined as the energy transfer from projectile to material per penetration distance. The most important ionic energy loss channels in the irradiation process are the electronic excitations. Therefore, the electronic stopping power is the central quantity in this field. With the advent of time-dependent density-functional theory (TDDFT), it is nowadays possible to provide a complete and realistic quantum-mechanical description of the phenomenon.In this thesis, we have developed a fully ab initio real-time TDDFT (RT-TDDFT) approach in the localized Gaussian basis. This implementation has several appealing advantages, such as the cheap account of core electrons, the ease of using the modern hybrid functionals, the flexibility of the basis set and overall low computational cost. With our tool, we explored the bulk limit, the validity of the projectile impact parameter averaging to obtain the experimental random electronic stopping power. We have proven the importance of core electron excitations in the ionic irradiations. A great care wasalso taken about the Gaussian basis set convergence: the extrapolation of the stopping power based on standard basis sets and the basis set generation scheme were proposed.Finally, we have computed the random electronic stopping power in lithium and aluminum targets for three types of projectiles: protons, antiprotons, and alpha-particles. We have compared our results directly to the experiment as well as to the empirical code SRIM, which is a widely-used database of stopping powers and a de facto standard for experimentalists. The agreement with SRIM is good when the SRIM database contains enough experimental points, whereas we show that the SRIM extrapolation can be hazardous when the underlying experimental data points are too few. Concerning the antiproton irradiation, our RT-TDDFT calculations show that the antiproton stopping power is lower than the proton one, which is in agreement with the general experimental observation (the so-called Barks effect). This effect is out of reach of simpler theories, such as the linear response approximation
Gonzalez, Karen. "Contribution à l’étude des processus markoviens déterministes par morceaux : étude d’un cas-test de la sûreté de fonctionnement et problème d’arrêt optimal à horizon aléatoire." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14139/document.
Повний текст джерелаPiecewise Deterministic Markov Processes (PDMP's) have been introduced inthe literature by M.H.A. Davis as a general class of stochastics models. PDMP's area family of Markov processes involving deterministic motion punctuated by randomjumps. In a first part, PDMP's are used to compute probabilities of top eventsfor a case-study of dynamic reliability (the heated tank system) with two di#erentmethods : the first one is based on the resolution of the differential system giving thephysical evolution of the tank and the second uses the computation of the functionalof a PDMP by a system of integro-differential equations. In the second part, wepropose a numerical method to approximate the value function for the optimalstopping problem of a PDMP. Our approach is based on quantization of the post-jump location and inter-arrival time of the Markov chain naturally embedded in thePDMP, and path-adapted time discretization grids. It allows us to derive boundsfor the convergence rate of the algorithm and to provide a computable ε-optimalstopping time
Ben, Jazia Abderrahim. "Flexible public private partnerships : a real-option-based optimization approach." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0176/document.
Повний текст джерелаPublic private partnerships can be a solution to the dilemma of how to do more with less available funds that public entities are constantly financing in the last decades. If implemented properly, Public Private Partnerships can contribute to the modernization of public service provision and can constitute efficient vehicles for the delivery of optimal value for money. The high incidence of renegotiation as well as the difficulty of accurately predicting the future demand on the projects is a matter of concern when it comes to the financial structuring of Public Private Partnerships. This work proposes a real-option- based optimization framework to boost the financial viability of the projects. This is done by introducing flexible financial clauses. First, an adequate framework for risk management, where volatility is derived by Monte Carlo simulation and the valuation is made without switching to the risk neutral measure, is presented. Four families of flexible clauses are, afterwards, investigated. Such clauses are triggerred, if the revenue level of the projet is not sufficient to guarnatee its financiel viability. Finally, this work develops a multi-objective optimization approach in order to assess the different trade-offs that the introduction of flexibility leads to. The proposed optimization problem is solved via multi-objective evolutionary algorithms
Offermann, Alexis. "Conception et validation d’un robot apte à effectuer des mesures sur ouvrage d’art." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2603.
Повний текст джерелаThis PhD. applies in the field of robotics for building inspection. Buildings are understood here as huge constructions such as bridges or churches. Using photogrammetry to analyses the structure of these kind of buildings is nowadays a common technique. To extend the analysis methodologies, we propose in this document to imagine a way to bring tools directly in contact with the buildings. Multiple solution possibilities are presented for a final choice. The chosen solution consists of designing a drone able to tilt its arms to bring the building inspection tool directly onto the wall of the construction. This leads to a double challenge. Firstly, the mechanical part of designing such a complex and non-common drone. Secondly,the development and real time testing of the control algorithm. Eventually, this manuscript proposes to use a particular software architecture joining fast experimentations and validation of the control laws. This platform being very versatile, it is also possible to consider re-using it for different applications in future works. The experimentations reveal good results, promoting the usage of the drone as a carrying vector to bring the tools onto the construction
Lecosse, Cyril. "Jean-Baptiste Isabey (1767-1855) : l'artiste et son temps." Thesis, Lyon 2, 2012. http://www.theses.fr/2012LYO20119.
Повний текст джерелаJean-Baptiste Isabey (1767-1855) had an exceptionally long career that spanned from the French Revolution until the Second French Empire. After his early works' exhibition at the Salon of 1791, this student of Jacques-Louis David rapidly became, on the art scene of the French Directory, the finest artist and miniaturist of his time. In a context that made the dissemination of low-cost and small-sized portraits easier, his unusual success reflects the change of artistic recognition criteria in the late eighteenth century. It also reflects the improvement of the social status of artists around 1800. Linked to people that were close to Bonaparte under the French Consulate, Isabey is one of the period's best introduced portraitists. His cleverness in using themes that meet his contemporaries' tastes clearly shows how important social relationships can be in the making and spreading of artistic reputations at the turn of the nineteenth century. Between 1800 and 1805, Isabey is the author of several large propaganda drawings that punctuate the main steps of the new power's consolidation. Familiar with the imperial nobility, the artist collects honours and official commissions in the wake of the Coronation. His reputation is associated with miniature portraits of the Emperor made for the fund of diplomatic presents and with some of the most famous official representations of Marie-Louise and of the King of Rome. His responsibilities are manifold and he produces a lot: he is the official painter for external relations, designer of the Cabinet, designer of Ceremonies and chief decorator of the Opera. The study of this multidisciplinary career gives many keys to a better understanding of the career and status of court artists under the Empire. After Waterloo, Isabey is sidelined because of his bonapartist commitments. At this time the artist performs several caricatures and portraits where he clearly criticizes the freshly restored monarchy. Analysing the effects of this resistance to the royalist regime in the world of arts between 1815 and 1820 helps in understanding his commitment to the opposition. The period opening in the aftermath of the Hundred Days is also fundamental to understanding Isabey's artistic career and to appreciate the place he was assigned by his contemporaries in the art of the first part of the nineteenth century. His prolific output, which comes in miniature on vellum, drawings, lithographs, watercolours and oil paintings shows his constant concern about changing tastes. It also highlights the difficulty he has to maintain his reputation as a portraitist after 1820.This thesis provides for the first time a catalogue of Isabey's works
Cai, Jiatu. "Méthodes asymptotiques en contrôle stochastique et applications à la finance." Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC338.
Повний текст джерелаIn this thesis, we study several mathematical finance problems related to the presence of market imperfections. Our main approach for solving them is to establish a relevant asymptotic framework in which explicit approximate solutions can be obtained for the associated control problems. In the first part of this thesis, we are interested in the pricing and hedging of European options. We first consider the question of determining the optimal rebalancing dates for a replicating portfolio in the presence of a drift in the underlying dynamics. We show that in this situation, it is possible to generate positive returns while hedging the option and describe a rebalancing strategy which is asymptotically optimal for a mean-variance type criterion. Then we propose an asymptotic framework for options risk management under proportional transaction costs. Inspired by Leland’s approach, we develop an alternative way to build hedging portfolios enabling us to minimize hedging errors. The second part of this manuscript is devoted to the issue of tracking a stochastic target. The agent aims at staying close to the target while minimizing tracking efforts. In a small costs asymptotics, we establish a lower bound for the value function associated to this optimization problem. This bound is interpreted in term of ergodic control of Brownian motion. We also provide numerous examples for which the lower bound is explicit and attained by a strategy that we describe. In the last part of this thesis, we focus on the problem of consumption-investment with capital gains taxes. We first obtain an asymptotic expansion for the associated value function that we interpret in a probabilistic way. Then, in the case of a market with regime-switching and for an investor with recursive utility of Epstein-Zin type, we solve the problem explicitly by providing a closed-form consumption-investment strategy. Finally, we study the joint impact of transaction costs and capital gains taxes. We provide a system of corrector equations which enables us to unify the results in [ST13] and [CD13]
Частини книг з теми "Temps d’arrêt"
"TEMPS D’ARRÊT OPTIMAL SUR UNE CHAINE DE MARKOV." In Modèles probabilistes d'aide à la décision, 665–708. Presses de l'Université du Québec, 1986. http://dx.doi.org/10.2307/j.ctv18pgvn2.14.
Повний текст джерелаKremer, Nathalie. "La verve et l’esquisse dans la critique d’art de Diderot." In Diderot et le temps, 221–31. Presses universitaires de Provence, 2016. http://dx.doi.org/10.4000/books.pup.10778.
Повний текст джерелаBenesch, Evelyn. "„L’ oeuvre d’art: un arrêt du temps“. Pierre Bonnards Esszimmer, Vernon." In Close Reading, 726–33. De Gruyter, 2021. http://dx.doi.org/10.1515/9783110752762-067.
Повний текст джерелаGallicchio, Alessandro. "Chapitre I. La critique d’art au temps de l’École de Paris." In Nationalismes, antisémitismes et débats autour de l’art juif, 21–60. Éditions de la Maison des sciences de l’homme, 2023. http://dx.doi.org/10.4000/books.editionsmsh.55498.
Повний текст джерела"Liste des œuvres d’art et des artistes cités." In Les Arts et les Lettres en Provence au temps du roi René, 287–88. Presses universitaires de Provence, 2013. http://dx.doi.org/10.4000/books.pup.19439.
Повний текст джерелаGalassi, Cristina. "La critique d’art à Pérouse entre la fin du xviiie siècle et le premier quart du xixe." In Jean-Baptiste Wicar et son temps 1762-1834, 205–29. Presses universitaires du Septentrion, 2007. http://dx.doi.org/10.4000/books.septentrion.111485.
Повний текст джерелаBartha-Kovács, Katalin. "Les russeries d’un peintre-voyageur au XVIIIe siècle : Le Prince vu par les critiques d’art de son temps." In Chroniqueur, philosophe, artiste. Figures du voyageur dans la littérature française aux XVIIIe-XIXe siecles. University of Warsaw Press, 2021. http://dx.doi.org/10.31338/uw.9788323551065.pp.145-164.
Повний текст джерела"Depuis le début des années quatre-vingt-dix, la société régulièrement des concentrés à l’hôpital Necker, d’autres française dans sa totalité, et pas seulement les hémophiles uniquement des cryoprécipités à l’hôpital Saint-Antoine. ou les transfusés, la presse et les politiques, les médecins Les derniers étaient belges et avaient reçu des produits et les chercheurs, tous individuellement, ont été nationaux. Il y avait moins de 5 % de contamination chez bouleversés par le drame du sang contaminé. Il est apparu les hémophiles belges, 10 % chez ceux de Saint-Antoine, au grand jour que plusieurs centaines d’hémophiles et de et presque 60 % chez ceux traités à Necker. Ces résultats transfusés ont été contaminés par le virus du SIDA entre furent pour nous un choc. Ils mettaient en évidence des 1983 et 1985. Le docteur Michel Garetta, ancien directeur taux de contamination importants et très différents selon du Centre national de transfusion sanguine (CNTS) et le le type de traitement des hémophiles. docteur Jean-Pierre Allain, chef du département de Cependant leur interprétation n’était pas simple [...] recherche et de développement du CNTS, ont été accusés Tous ces résultats ne sont pas restés un secret de « de tromperies sur les qualités substantielles d’un laboratoire, mais ils ont rencontré l’incrédulité ou produit ». Il s’agissait de l’écoulement de produits non l’indifférence. chauffés destinés aux hémophiles entre juin et octobre Une décision énergique, qui aurait pu suivre notre 1985. Le professeur Jacques Roux, ancien directeur enquête de 1984, aurait pu être d’arrêter dès 1984 tout général de la Santé, et le docteur Robert Netter, ancien traitement prophylactique des hémophiles avec des directeur du Laboratoire national de la santé ont été concentrés. Elle aurait été fort impopulaire chez les accusés « de non-assistance à personnes en danger » [1]. médecins transfuseurs et les hémophiles eux-mêmes. Ces personnes ont été jugées. Des condamnations Avertir d’un danger de mort ceux qui n’étaient pas encore pénales ont été prononcées. infectés, c’était en même temps annoncer aux 60 % déjà Ces contaminations auraient-elles pu être évitées ? séropositifs la probabilité d’une mort prématurée. Comment les découvertes scientifiques ont-elles interagi En 1985, les connaissances étaient plus avancées et la avec les décisions de santé publique ? Ces questions recommandation d’utiliser des produits chauffés se continuent à agiter bien des esprits. généralisait. Notre étude sur les hémophiles italiens parue Le SIDA a été identifié pour la première fois aux en février 1985, bien qu’imparfaite et fragmentaire, États-Unis en 1981 comme maladie transmissible chez pouvait contribuer à lever les doutes à la fois sur des homosexuels. l’efficacité du chauffage et sur le risque des effets Dès 1982, le même syndrome a été reconnu chez des secondaires. Les dirigeants du CNTS ont continué à hémophiles : cette observation était fondamentale, car ces diffuser entre juillet et octobre 1985 des produits qu’ils hémophiles avaient reçu des produits dérivés du sang – savaient potentiellement contaminés. La restriction de des concentrés – qui avaient été filtrés leur usage aux hémophiles infectés (séropositifs) n’a sans bactériologiquement, ce qui montrait que l’agent doute été qu’imparfaitement suivie. Habituellement, infectieux était présent dans le sang et relativement lorsqu’un produit s’avère dangereux, il est retiré résistant puisqu’il avait supporté les différentes étapes de immédiatement du circuit des utilisateurs par la purification partielle de ces produits. compagnie qui le fabrique. [...] L’erreur des autorités de santé publique fut de ne pas Dès le début de nos recherches sur le SIDA, nous nous avoir considéré ces produits comme des médicaments et sommes intéressés aux hémophiles, en effet certains d’en avoir confié le monopole à une entreprise qui n’avait d’entre eux étaient infectés, nous avons donc suspecté que pas le statut d’une entreprise pharmaceutique. De manière le virus pouvait se transmettre par le sang. Nous avons générale, les fabriquants ne peuvent être leur propre d’ailleurs effectué dès 1983 un premier isolement de contrôle. Aujourd’hui, ceci a été pris en ligne de compte virus à partir du sang d’un jeune hémophile. dans la nouvelle organisation de la transfusion et de la En 1983–1984, nous avons commencé une étude fabrication des produits sanguins. sérologique comparant les taux de séropositivité en fonction des différents produits de substitution que les hémophiles avaient reçus. Certains avaient reçu." In Francotheque: A resource for French studies, 179–211. Routledge, 2014. http://dx.doi.org/10.4324/978020378416-34.
Повний текст джерелаТези доповідей конференцій з теми "Temps d’arrêt"
Buyer, Véronique. "Les écrans blancs : silences, glissements et contretemps dans le cinéma de Michelangelo Antonioni et quelques œuvres d’art vidéo." In L’art, machine à voyager dans le temps. Fabula, 2017. http://dx.doi.org/10.58282/colloques.4703.
Повний текст джерела