Literatura académica sobre el tema "Modèles matriciels"
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Artículos de revistas sobre el tema "Modèles matriciels"
Lesnoff, Matthieu, Renaud Lancelot, Emmanuel Tillard y Bernard Faye. "Analyse comparative de la productivité des cheptels de petits ruminants en élevage extensif tropical : une nouvelle approche par les modèles matriciels en temps discret". Revue d’élevage et de médecine vétérinaire des pays tropicaux 54, n.º 1 (1 de enero de 2001): 69. http://dx.doi.org/10.19182/remvt.9809.
Texto completoGUENANE, Brahim. "Les modèles matriciels d’analyse stratégique de la banque commerciale: Cas de la Banque Nationale d’Algérie". Dirassat Journal Economic Issue 9, n.º 2 (1 de junio de 2018): 83–102. http://dx.doi.org/10.34118/djei.v9i2.189.
Texto completoEllis, Peter y Patrick M. Gaskin. "Le modèle matriciel de Sunnybrook—Un pas en avant". Healthcare Management Forum 1, n.º 2 (julio de 1988): 15–18. http://dx.doi.org/10.1016/s0840-4704(10)61386-5.
Texto completoCourtault, Jean-Michel. "Économétrie du portefeuille : l'approche de l'information". Recherches économiques de Louvain 60, n.º 2 (junio de 1994): 211–48. http://dx.doi.org/10.1017/s0770451800005807.
Texto completoDionne, Claude. "Modèle démographique polyvalent". Articles : Communications libres 8, n.º 3 (6 de enero de 2009): 139–55. http://dx.doi.org/10.7202/600802ar.
Texto completoKellert, P. "Modèles analytiques approximatifs d'un phénomène de blocage systématique dans une architecture multiprocesseur matricielle". RAIRO - Operations Research 23, n.º 4 (1989): 375–91. http://dx.doi.org/10.1051/ro/1989230403751.
Texto completoCaron, Gilles. "Le modèle organisationnel de la Bibliothèque de l’Université du Québec à Chicoutimi". Documentation et bibliothèques 40, n.º 3 (6 de octubre de 2015): 121–32. http://dx.doi.org/10.7202/1033471ar.
Texto completoChanier, Paul. "Le sophisme des n dimensions et son dépistage dans l’analyse économique". Économie appliquée 46, n.º 2 (1993): 147–78. http://dx.doi.org/10.3406/ecoap.1993.2332.
Texto completoKraege, Jean-Denis. "René Girard : un modèle à imiter et à dépasser". Études théologiques et religieuses Tome 98, n.º 2 (18 de julio de 2023): 205–26. http://dx.doi.org/10.3917/etr.982.0205.
Texto completoNicholls, Jim y J. Kelly Russell. "Igneous Rock Associations 20. Pearce Element Ratio Diagrams: Linking Geochemical Data to Magmatic Processes". Geoscience Canada 43, n.º 2 (18 de mayo de 2016): 133. http://dx.doi.org/10.12789/geocanj.2016.43.095.
Texto completoTesis sobre el tema "Modèles matriciels"
Fevrier, Maxime. "Liberté infinitésimale et modèles matriciels déformés". Phd thesis, Université Paul Sabatier - Toulouse III, 2010. http://tel.archives-ouvertes.fr/tel-00567800.
Texto completoFévrier, Maxime. "Liberté infinitésimale et modèles matriciels déformés". Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1252/.
Texto completoThis thesis is about Random Matrix Theory and Free Probability whose strong relation is known since the early nineties. The results mainly organize in two parts : one on infinitesimal freeness, the other on deformed matrix models. More precisely, a combinatorial theory of first order infinitesimal freeness, as introduced by Belinschi and Shlyakhtenko, is developed and generalized to higher order. We give a simple and general framework and we introduce infinitesimal non-crossing cumulant functionals, providing a characterization of infinitesimal freeness. The emphasis is put on combinatorics and on the essentially differential ideas underlying this notion. The second part carries further the study of deformations of matrix models, which has been a very active field of research these past years. The results we present are original in the sense they deal with non-necessarily finite rank deterministic Hermitian perturbations of Wigner and Wishart matrices. Moreover, these results shed light on the link between convergence of eigenvalues of deformed matrix models and free probability, particularly the subordination phenomenon related to free convolution. This link gives an illustration of the power of free probability ideas in random matrix problems
Robert, Christian P. "Résultats nouveaux sur les estimateurs à rétrecisseurs scalaires et matriciels". Rouen, 1987. http://www.theses.fr/1987ROUES029.
Texto completoAhdida, Abdelkoddousse. "Processus matriciels : simulation et modélisation de la dépendance en finance". Thesis, Paris Est, 2011. http://www.theses.fr/2011PEST1154/document.
Texto completoAfter a short introduction (in French) to the multi dimensional modelling for index pricing problems, the first part of the thesis treats the simulation of stochastic differential equations defined on the cone of symmetric positive semi-definite matrices. Indeed, we present several second order discretization schemes associated to a general class of affine processes defined on $posm.$ We study also their weak convergence. We pay a special attention to Wishart processes, which are considered as a particular case of this class and have been frequently used in finance. In this case, we give an exact scheme and a third order discretization one. To the best of our knowledge, this is the first exact sampling of the Wishart distribution without any restrictions on its parameters. Some algorithm are proposed in order to enhance all scheme in term of computation of time. We show numerical illustrations of our convergence and compare it to the theoretical rate. We then focus on other type of processes defined on the correlation matrix space. For this purposes, We propose a new stochastic differential equation defined on $crr.$ We prove the weak and the strong existence of such solutions. These processes are considered as the extension of Wright-Fisher processes (or Jacobi process) on correlation matrices. We shed light on a useful connection with Wishart processes and Wright-Fisher multi-allèles. Moreover, we explicitly present their moments, which enable us to describe the ergodic limit. Other results about Girsanov representations are also given. Finally, in order to use these processes in practice, we propose second order discretization schemes based on two different methods. Numerical experiments are presented to show the convergence. The last part is devoted to multi dimension modelling in finance for baskets and indices pricing. After giving a mathematical analysis of models defined either by the correlation matrix or in the positive semi-definite semi positive one, we ask if we find the adequate structure of correlation models which is able to calibrate both the index options market and the single options market related to each component of this index. For this purpose, we propose two types of modelling, the first uses a local model correlation and the second derives from a pure stochastic correlation model. Moreover, we explain different routines that have been used for improved calibration
François, Bruno. "Formalisme de modélisation et de synthèse des commandes appliqué aux convertisseurs statiques à structure matricielle". Lille 1, 1996. http://www.theses.fr/1996LIL10009.
Texto completoMitsios, Dimitrios. "New relations for correlators and intersection numbers". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP158.
Texto completoCorrelation functions are central objects in Physics and Mathematics. We define them in the context of integrable systems using determinantal formulas and explore their properties and applications on intersection theory in the moduli space of curves. Moreover, we present the relation between topological recursion, integrable systems and matrix models. This thesis comprises two articles and code implementation. The first article presents a method for deriving differential equations and recurrence relations for correlation functions in integrable systems and random matrices, allowing for the construction of coefficients that are rational functions. The second article introduces a new formula for intersection numbers of psi classes over the moduli space of curves, solving a conjecture from previous work. Python implementation for computing the following integrals over the moduli space of curves: simple and triple Hodge integrals with or without theta classes. We begin by introducing random matrix theory from a historical perspective
Vermeiren, Laurent. "Proposition de lois de commande pour la stabilisation de modèles flous". Valenciennes, 1998. https://ged.uphf.fr/nuxeo/site/esupversions/a005c251-ed19-4404-bbe5-cce9091ff922.
Texto completoMorère, Yann. "Mise en oeuvre de lois de commande pour les modèles flous de type Takagi-Sugeno". Valenciennes, 2001. https://ged.uphf.fr/nuxeo/site/esupversions/606b1a0a-cd9b-40f2-8292-bf560ea0af7c.
Texto completoCoste, Christophe. "The costs of reproduction in evolutionary demography : an application of Multitrait Population Projection Matrix models". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC259/document.
Texto completoCosts of reproduction are pervasive in life history theory. Through this constraint, the reproductive effort of an organism at a given time negatively affects its later survival and fertility. For life historians, they correspond mostly to a physiological trade-off that stems from an allocative process, occurring at each time-step, at the level of the individual. For evolutionary demographers, they are essentially about genetic trade-offs, arising from a genetic variance in a pleiotropic gene acting antagonistically on early-age and late-age fitness components. The study, from an evolutionary demographic standpoint, of these mechanisms and of the relative, cross and joint effects of physiological and genetic costs, is the aim of this thesis. The close examination of Williams (1966)’s original definition of the physiological costs of reproduction led us to produce a theoretical design of their apparatus that accounts for both their mechanistic and evolutionary mechanisms. This design allowed us to make predictions with regards to the strength of costs of reproduction for various positions of organisms on three life-history spectra: slow-fast, income-capital breeders and quality-quantity. From Stearns (1989b)’s tryptic architecture of life history trade-offs –that divides their structure into the genotypic level, the intermediate structure and the phenotypic level – we devised a general framework, which models the possible cohabitation of both physiological and genetic costs. From this, we inferred differing detectability patterns of both types of costs according to the environmental conditions, their variance and individual stochasticity. We could also establish that both costs buffer environmental variations, but with varying time windows of effect. Their dissimilarity emerges also from the differences between mathematical projection models specific to each cost. A new family of evolutionary models is therefore required to implement both physiological and genetic trade-offs. We then describe the vector-based construction method for such a model which we call Multitrait Population Projection Matrix (MPPM) and which allows incorporating both types of costs by embedding them as traits into the matrix. We extend the classical sensitivity analysis techniques of evolutionary demography to MPPMs. Most importantly, we present a new analysis tool for both life history and evolutionary demography: the Trait Level Analysis. It consists in comparing pairs of models that share the same asymptotic properties. Such ergodic equivalent matrices are produced by folding, an operation that consists in reducing the number of traits of a multi-trait model, by averaging transitions for the traits folded upon, whilst still preserving the asymptotic flows. The Trait Level Analysis therefore allows, for example, to measure the evolutionary importance of costs of reproduction by comparing models incorporating them with folded versions of these models from which the costs are absent. Using classical and new methods to compute fitness moments – selection gradient, variance in reproductive success, environmental variance - in models with and without the costs, we can show their effects on various demographic and evolutionary measures. We reveal, in this way, the combined effects of genetic and physiological costs on the vital rates of an age-structured population. We also demonstrate how physiological costs affect both components of effective selection, as they flatten the slope of selection gradients and increase the effective size of a population. Finally, we show how their buffering of environmental and demographic variance confer greater resilience to populations experiencing physiological costs of reproduction
Benoit, de Coignac Amélie. "Clonage et caractérisation de nouvelles métalloprotéases matricielles". Montpellier 2, 2000. http://www.theses.fr/2000MON20183.
Texto completoCapítulos de libros sobre el tema "Modèles matriciels"
R. CHAKRAVARTHY, Srinivas. "Modèles de files d’attente dans les services : approche analytique et de simulation". En Théorie des files d’attente 2, 41–89. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9004.ch2.
Texto completoActas de conferencias sobre el tema "Modèles matriciels"
Desoutter, A., A. G. Bodard, S. Langonnet, S. Salino y J. C. Bera. "Développement d’un modèle expérimental d’irradiation de mandibule de lapin. Intérêt dans l’évaluation de nouvelles techniques de traitement ou prévention de l’ORN". En 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206603023.
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