Institution
Institut Élie Cartan de Lorraine
Facility•Vandœuvre-lès-Nancy, France•
About: Institut Élie Cartan de Lorraine is a facility organization based out in Vandœuvre-lès-Nancy, France. It is known for research contribution in the topics: Boundary value problem & Stochastic differential equation. The organization has 345 authors who have published 1084 publications receiving 15512 citations. The organization is also known as: Institut Élie-Cartan de Nancy.
Topics: Boundary value problem, Stochastic differential equation, Boundary (topology), Brownian motion, Nonlinear system
Papers published on a yearly basis
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01 Jan 2013
TL;DR: In this article, the authors propose a modele descriptif of a panneaux photovoltaique based on a moyen d'une etude statistique, and propose an approach to select les variables les plus influentes on a production.
Abstract: La production electrique des panneaux photovoltaiques depend de nombreux parametres meteorologiques : rayonnement du soleil, presence ou absence de nuages, temperature, ... La problematique que nous a soumise l'entreprise RTE et a laquelle nous reflechissons dans ce document est de selectionner les variables les plus influentes sur cette production au moyen d'une etude statistique, et de proposer un modele descriptif de cette production qui adhere le mieux possible a la realite. Dans cet objectif, nous faisons dans un premier temps un tour d'horizon des modeles statistiques existants. Nous etudions ensuite un modele additif pour analyser les donnees fournies par RTE et effectuer une premiere selection de variables grâce au modele GAM. Enfin, on reprend cette etude avec le modele MARS dans l'objectif de pouvoir regrouper des variables entre elles pour pouvoir transformer notre modele additif tres restrictif en un modele plus adapte a la situation consideree.
1 citations
12 Oct 2015
Abstract: Le but de ce cours est de presenter quelques aspects de la theorie des processus de branchement en temps discret, aussi appeles processus de Galton Watson, puis d’appliquer ces outils a l'etude de proprietes genealogiques de ces processus.
1 citations
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TL;DR: For general Kac-Moody Lie algebras, the notion of generalized C-admissible pairs was introduced by Rubenthaler and Nervi.
Abstract: We look to gradations of Kac-Moody Lie algebras by Kac-Moody root systems with finite dimensional weight spaces. We extend, to general Kac-Moody Lie algebras, the notion of C-admissible pair as introduced by H. Rubenthaler and J. Nervi for semi-simple and affine Lie algebras. If g is a Kac-Moody Lie algebra (with Dynkin diagram indexed by I) and (I,J) is such a C-admissible pair, we construct a C-admissible subalgebra g^J, which is a Kac-Moody Lie algebra of the same type as g, and whose root system \Sigma grades finitely the Lie algebra g. For an admissible quotient \rho : I \rightarrow I we build also a Kac-Moody subalgebra g^\rho which grades finitely the Lie algebra g. If g is affine or hyperbolic, we prove that the classification of the gradations of g is equivalent to those of the C-admissible pairs and of the admissible quotients. For general Kac-Moody Lie algebras of indefinite type, the situation may be more complicated; it is (less precisely) described by the concept of generalized C-admissible pairs.
1 citations
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TL;DR: In this article, the authors consider a fluid-structure interaction system composed by a rigid ball immersed into a viscous incompressible fluid and show that there is contact in finite time between the ball and the exterior boundary of the fluid for this system in the bidimensional case and in presence of gravity.
Abstract: We consider a fluid-structure interaction system composed by a rigid ball immersed into a viscous incompressible fluid. The motion of the structure satisfies the Newton laws and the fluid equations are the standard Navier-Stokes system. At the boundary of the fluid domain, we use the Tresca boundary conditions, that permit the fluid to slip tangentially on the boundary under some conditions on the stress tensor. More precisely, there is a threshold determining if the fluid can slip or not and there is a friction force acting on the part where the fluid can slip. Our main result is the existence of contact in finite time between the ball and the exterior boundary of the fluid for this system in the bidimensional case and in presence of gravity.
1 citations
30 May 2016
TL;DR: Des mesures indirectes peuvent alors etre utilisees pour estimer le volume plasmatique ou ses variations pour predire les evenements cardiovasculaires precoces, des modeles de classification supervisee ont ete realises (regression logistique, analyse discriminante lineaire, etc).
Abstract: L'insuffisance cardiaque est un probleme majeur de sante publique. La congestion est la principale cause d'hospitalisation chez les insuffisants cardiaques. Son evaluation est donc d'une importance primordiale afin d'optimiser la prise en charge des insuffisants cardiaques et ainsi eviter les re-hospitalisations trop frequentes. Le volume plasmatique est un marqueur de congestion toutefois difficile a quantifier de maniere non-invasive en pratique clinique de routine. Des mesures indirectes peuvent alors etre utilisees pour estimer le volume plasmatique ou ses variations. Afin de mettre en evidence l'utilite de ces differentes mesures pour predire les evenements cardiovasculaires precoces, des modeles de classification supervisee ont ete realises (regression logistique, analyse discriminante lineaire), precedes par une phase de selection progressive des variables et testes par validation croisee. L'apport du biomarqueur d'interet a la prediction du pronostic a ete quantifie a l'aide de trois indices : la difference entre deux aires sous la courbe ROC (IAUC), le « Net Reclassification Improvement » continu (cNRI) et l' « Integrated Discrimination Improvement » (IDI).
1 citations
Authors
Showing all 361 results
Name | H-index | Papers | Citations |
---|---|---|---|
Ivan Nourdin | 44 | 217 | 6139 |
Marius Tucsnak | 33 | 114 | 3907 |
Victor Nistor | 31 | 158 | 3352 |
Xavier Antoine | 30 | 125 | 2992 |
Jan Sokołowski | 30 | 203 | 6056 |
Nicolas Fournier | 29 | 106 | 3044 |
Gérald Tenenbaum | 29 | 173 | 5100 |
Lionel Rosier | 29 | 126 | 3956 |
Vicente Cortés | 27 | 118 | 2356 |
Gauthier Sallet | 27 | 70 | 2007 |
Antoine Henrot | 26 | 128 | 3268 |
Samy Tindel | 26 | 168 | 2656 |
Bruno Scherrer | 25 | 69 | 1447 |
Mario Sigalotti | 25 | 180 | 2082 |
Takéo Takahashi | 24 | 87 | 1673 |