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     <dc:title xml:lang="fr">Loi limite de modèles cinétiques inhomogènes en temps</dc:title>
     <dcterms:alternative xml:lang="en">Asymptotic distribution of a time-inhomogeneous kinetic model</dcterms:alternative>
     <dc:subject xml:lang="fr">modèle stochastique cinétique</dc:subject><dc:subject xml:lang="fr">équation différentielle stochastique inhomogène en
temps</dc:subject><dc:subject xml:lang="fr">processus de Lévy</dc:subject><dc:subject xml:lang="fr">loi limite</dc:subject><dc:subject xml:lang="fr">transformation d’échelles</dc:subject>
     <dc:subject xml:lang="en">kinetic stochastic equation</dc:subject><dc:subject xml:lang="en">time-inhomogeneous stochastic differential equation</dc:subject><dc:subject xml:lang="en">Lévy process</dc:subject><dc:subject xml:lang="en">asymptotic distribution</dc:subject><dc:subject xml:lang="en">scaling transformation</dc:subject><tef:sujetRameau><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="028697510">Équations différentielles stochastiques</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="035589604">Lévy, Processus de</tef:elementdEntree>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="031439292">Théorèmes des limites (théorie des probabilités)</tef:elementdEntree>
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     <dcterms:abstract xml:lang="fr">Nous étudions, dans cette thèse, le comportement asymptotique de solutions de systèmes cinétiques inhomogènes, dirigés par un processus de Lévy. Plus précisément, on s'intéresse à la dynamique d'une particule, évoluant dans un potentiel, et soumise à la fois à une force de frottement F et à une force extérieure aléatoire L. La force F est attractive et vérifie des propriétés d'invariance d'échelle. Elle est altérée par la présence d'un facteur inhomogène en temps. La première partie de ce manuscrit correspond à l'étude du système en l'absence de potentiel confinant, tandis que la seconde s'intéresse à la présence d'un potentiel quadratique. L'enjeu est de comprendre comment interagissent les différentes forces afin de montrer que le processus vitesse-position, correctement renormalisé, admet une limite en loi explicite.</dcterms:abstract>
     <dcterms:abstract xml:lang="en">We study the asymptotic behavior of some stochastic kinetic inhomogeneous models driven by a Lévy process L. It describes the dynamics of a particle, evolving in a potential, subject to a random force L and a frictional force F. The drag force is supposed to satisfy some scaling properties and to be weakened along the time. In the first part, we study the free potential system. Alternatively, in the second part, the particle is supposed to evolve in a quadratic potential. The issue of this thesis is to understand the balance between the drag force and the random force, with the aim of highlighting an explicit distributional limit of the couple velocity-position.</dcterms:abstract>
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       <tef:nom>Luirard</tef:nom>
       <tef:prenom>Emeline</tef:prenom>
       
       <tef:dateNaissance>1995-12-06</tef:dateNaissance>
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