Literatura académica sobre el tema "Méthode à densité"
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Artículos de revistas sobre el tema "Méthode à densité":
Faucher, D., P. F. Rasmussen y B. Bobée. "Estimation non paramétrique des quantiles de crue par la méthode des noyaux". Revue des sciences de l'eau 15, n.º 2 (12 de abril de 2005): 515–41. http://dx.doi.org/10.7202/705467ar.
Lubrano, Michel. "Modélisation bayésienne non linéaire du taux d’intérêt de court terme américain : l’aide des outils non paramétriques". Articles 80, n.º 2-3 (24 de octubre de 2005): 465–99. http://dx.doi.org/10.7202/011396ar.
Batawui, K., R. De Deken, P. Bastiaensen, A. Napala y Guy Hendrickx. "Application séquentielle de lambda-cyhalothrine sur le bétail par la méthode ElectrodynTM. Résultats obtenus au Togo dans le cadre de la lutte contre la trypanosomose animale africaine". Revue d’élevage et de médecine vétérinaire des pays tropicaux 55, n.º 3 (1 de marzo de 2002): 189. http://dx.doi.org/10.19182/remvt.9823.
Daget, Philippe y Alexandre Ickowicz. "Evaluer la densité des ligneux par la méthode des distances ? Un estimateur". Revue d’élevage et de médecine vétérinaire des pays tropicaux 52, n.º 3-4 (1 de marzo de 1999): 267–69. http://dx.doi.org/10.19182/remvt.9674.
Daget, Philippe. "Evaluer la densité des ligneux par la méthode des dénombrements ? Une difficulté". Revue d’élevage et de médecine vétérinaire des pays tropicaux 52, n.º 3-4 (1 de marzo de 1999): 270–71. http://dx.doi.org/10.19182/remvt.9675.
Aubin, Jean-Baptiste y Anne Massiani. "Comportement asymptotique d'un estimateur de la densité adaptatif par méthode d'ondelettes". Comptes Rendus Mathematique 337, n.º 4 (agosto de 2003): 293–96. http://dx.doi.org/10.1016/s1631-073x(03)00310-8.
Ouattara, L. y Philippe Dorchies. "Prévalence sérologique de l'oestrose ovine au Burkina Faso : estimation par la technique ELISA". Revue d’élevage et de médecine vétérinaire des pays tropicaux 49, n.º 3 (1 de marzo de 1996): 219–21. http://dx.doi.org/10.19182/remvt.9516.
Daget, Philippe, Alexandre Ickowicz y Momar Mbaye. "Evaluer la densité des ligneux par la méthode des distances ? Un problème". Revue d’élevage et de médecine vétérinaire des pays tropicaux 52, n.º 3-4 (1 de marzo de 1999): 263–66. http://dx.doi.org/10.19182/remvt.9673.
Poreba, Martyna y François Goulette. "Recalage rigide de relevé laser par mise en correspondance robuste basée sur des segments". Revue Française de Photogrammétrie et de Télédétection, n.º 207 (24 de septiembre de 2014): 3–17. http://dx.doi.org/10.52638/rfpt.2014.208.
Hochedez, Camille, David Lessault y Pierre Pistre. "Enquêter les migrations internationales dans des espaces de faible densité. Retours réflexifs sur l’articulation d’approches statistiques et d’approches de terrain plurielles". Annales de géographie N° 755, n.º 1 (6 de febrero de 2024): 25–51. http://dx.doi.org/10.3917/ag.755.0025.
Tesis sobre el tema "Méthode à densité":
Youndje, Elie. "Estimation non paramétrique de la densité conditionnelle par la méthode du noyau". Rouen, 1993. http://www.theses.fr/1993ROUES011.
Aucejo-Galindo, Vicente. "Méthode tensorielle générale pour une modélisation multiphysique de dispositifs magnétomécaniques rapides". Thesis, Metz, 2010. http://www.theses.fr/2010METZ028S/document.
Currently the goal of knowledge magnetomechanical devices is completed by means of several complementary approaches. On one hand the physical approach with mathematical formulations of magnetic forces. On the other hand, multiphysics approaches to achieve a deeper insight and more real, physical phenomena associated with interactions that act in the devices. And finally, the interdisciplinary approach that takes into account the lifecycle of the product, so called eco-design. A design of a ultra fast micromotor with induced magnetization and axial flux is presented in this paper with the physical approach showing the restrictions thereof. Accordingly therefore, the physical approach, a new tensor method is developed as a general contribution to a multiphysics modeling of magnetomechanical devices, bringing together the various numerical formulations of magnetic forces. A characterization of the new tensor is presented and applied to calculate the forces on bodies in contact
Beaucamp, Sylvain. "Méthode de calcul des densités et des enthalpies de cristaux ioniques moléculaires". Tours, 2004. http://www.theses.fr/2004TOUR4052.
Performances of energetic materials depend on their density, their solid-state of formation and their stoechiometry. The aim of this works is the development of model to estimate the density and the solid-state of formation of energetic salts, X-N+ NO[-3], from their developed formulate. Model using additive volumes for charges groupes is developed to predict crystal densities of molecular salts. On the one hand, the group contribution method of Ammon and Mitchell is extended molecular salts. On the other hand, a less empirical contribution method is presented. Solid state-heat of formation of a molecular salts depend on the anthalpie of the isolated ions and the cohesive energy of the crystal salts. The estimate the cohesive energy two approach are developed : a semi-empirical model using descriptors computed on isolated ions and the crystal packing of virtual crystal salts of ions. Moreover, implementation of the symetry-constrained in the self consistent charges density functional tight binbing model is developped. This routine may riffine virtual salts structure obtained by packing model. The last part shows applications of previous developed models to the prediction of the solid state of formation of nitrate salts
Carbone, Mathieu. "Efficacité, généricité et praticabilité de l'attaque par information mutuelle utilisant la méthode d'estimation de densité par noyau". Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS087.
Nowadays, Side-Channel Analysis (SCA) are easy-to-implement whilst powerful attacks against cryptographic implementations posing a serious threat to the security of cryptosystems for the designers. Indeed, the execution of cryptographic algorithms unvoidably leaks information about internally manipulated data of the cryptosystem through side-channels (time, temperature, power consumption, electromagnetic emanations, etc), for which some of them are sensible(depending on the secret key). One of the most important SCA steps for an adversary is to quantify the dependency between the measured side-channel leakage and an assumed leakage model using a statistical tool, also called distinguisher, in order to find an estimation of the secret key. In the SCA literature, a plethora of distinguishers have been proposed. This thesis focuses on Mutual Information (MI) based attacks, the so-called Mutual Information Analysis (MIA) and proposes to fill the gap of the major practical issue consisting in estimating MI index which itself requires the estimation of underlying distributions. Investigations are conducted using the popular statistical technique for estimating the underlying density distribution with minimal assumptions: Kernel Density Estimation (KDE). First, a bandwidth selection scheme based on an adaptivity criterion is proposed. This criterion is specific to SCA.As a result, an in-depth analysis is conducted in order to provide a guideline to make MIA efficient and generic with respect to this tuning hyperparameter but also to establish which attack context (connected to the statistical moment of leakage) is favorable of MIA. Then, we address another issue of the kernel-based MIA lying in the computational burden through a so-called Dual-Tree algorithm allowing fast evaluations of 'pair-wise` kernel functions. We also showed that MIA running into the frequency domain is really effective and fast when combined with the use of an accurate frequency leakage model. Additionally, we suggested an extension of an existing method to detect leakage embedded on higher-order statistical moments
Thauvoye, Christophe. "Simulation numérique d'écoulements turbulents réactifs par une méthode hybride à fonction densité de probabilité transportée". Poitiers, 2005. http://www.theses.fr/2005POIT2276.
This work concerns the field of numerical simulation of turbulent reactive flows. The aim of this work is to study a hybrid method based on the use of a lagrangian transported Probability Density Function (PDF) method coupled with a eulerian method which solves the Reynolds Averaged Navier-Stokes equations (R. A. N. S). The first part is devoted to the description of the RANS and the transported PDF methods. The latter is more precisely detailed : it allows to highlight both advantages and drawbacks of the two approaches. In this context, we will develop all the aspects related to the modelling and resolution of the transported joint PDF equation. Its resolution generally uses a Monte-Carlo numerical simulation. We also show how the statistical nature of Monte-Carlo methods induces numerical difficulties, which led to the development of hybrid methods associating RANS method with a transported PDF approach. In the second part of this study, theoretical and numerical aspects of the hybrid methods are detailed, and more precisely the PEUL+ model developed at ONERA. A new – instationary – way of coupling is proposed. It improves the stability and precision of the model in comparison with the stationary way of coupling. It is then tested and validated on two configurations : a methane-air nonpremixed flame stabilised by a piloted flame ; and a premixed flame in a sudden symmetric plane expansion
Benkaci-Ali, Hassene. "Optimisation des performances d'un ondulateur à modulation de densité d'impulsion modélisation mathématique et méthode génétique". Thèse, Université du Québec à Trois-Rivières, 2013. http://depot-e.uqtr.ca/6977/1/030596182.pdf.
Bechereau, Marie. "Élaboration de méthodes Lattice Boltzmann pour les écoulements bifluides à ratio de densité arbitraire". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLN059/document.
Two-fluid extensions of Lattice Boltzmann methods with free boundaries usually consider ``microscopic'' pseudopotential interface models. In this paper, we rather propose an interface-capturing Lattice Boltzmann approach where the mass fraction variable is considered as an unknown and is advected. Several works have reported the difficulties of LBM methods to deal with such two-fluid systems especially for high-density ratio configurations. This is due to the mixing nature of LBM, as with Flux vector splitting approaches for Finite Volume methods. We here give another explanation of the lack of numerical diffusion of Lattice Boltzmann approaches to accurately capture contact discontinuities. To fix the problem, we propose an arbitrary Lagrangian-Eulerian (ALE) formulation of Lattice-Boltzmann methods. In the Lagrangian limit, it allows for a proper separated treatment of pressure waves and advection phenomenon. After the ALE solution, a remapping (advection) procedure is necessary to project the variables onto the Eulerian Lattice-Boltzmann grid.We explain how to derive this remapping procedure in order to get second-order accuracy and achieve sharp stable oscillation-free interfaces. It has been shown that mass fractions variables satisfy a local discrete maximum principle and thus stay in the range $[0,1]$. The theory is supported by numerical computations of rising bubbles (without taking into account surface tension at this current state of development).Even if our methods are currently used for inviscid flows (Euler equations) by projecting the discrete distributions onto equilibrium ones at each time step, we believe that it is possible to extend the framework formulation for multifluid viscous problems. This will be at the aim of a next work
Jerier, Jean-François. "Modélisation de la compression haute densité des poudres métalliques ductiles par la méthode des éléments discrets". Grenoble 1, 2009. http://www.theses.fr/2009GRE10242.
This Ph. D. Manuscript synthesises three years of research dedicated to numerical and theoretical studies of high density powder compaction. During cold compaction process, the compaction stage is among the most sensitive powder metallurgy’s stages, because it has a strong impact on the mechanical properties of the final part. It is necessary to find a numerical approach to control and to optimize the high density powder compaction (density value above 0:9). We propose to model by the discrete element method the behaviour of powder which is observed experimentally under different loading paths. To date, the discrete element simulations are not able to model the powder compaction for high density values (density is limited at 0:85). To go beyond this limit, we present a contact model implemented into a discrete element open-source software (Yade). This new contact model is based on a normal contact law which integrates in its expression the local density parameter. This new local variable takes into account the incompressibility of the material which appears at density values above 0:85. In order to realize more realistic simulations, a new geometric algorithm to generate polydisperse sphere packings is developed. This new numerical tool is able to generate very fast large sphere assemblies with different properties controlled by the user as: density distribution, the minimal and maximal size of spheres. With the contact model capable of reproducing the granular interaction up to high density value and the geometric algorithm which generates sphere assemblies similar to powder, we realize simulations of isostatic and closed die compaction for various types of powder (copper, aluminium, iron). The results are directly compared with those obtained by multi-particle finite element method and by experimental tests. These comparisons allow to validate and test the robustness of the contact model developed here. Finally, we investigate the evolution of aluminium powder assembly composed with an initial graded density distribution during the closed die compaction
Durance, Loïc. "Développement d'une méthode de stérilisation par la chaleur de solutions injectables conditionnées en polyéthylène basse densité". Amiens, 2003. http://www.theses.fr/2003AMIED003.
The solutions for injection are usually packaged in glass flasks and sterilised by moist steam. Is the current tendency to substitute glass by the plastic because it reduce the obstruction of conditioning while increasing its shock-proofness and allows a board elimination of the wastes by incineration. Only some plastics meet both public health regulations and ecological requirements. Among them, low density polyethylene (LDPE) offers various advantages. It possesses virtually no additive, which limits the interaction hazards between plastic and chemical substances used in injection preparations. Its destruction does not bring chlorine-containing waste or other toxic matter into the atmosphere. Moreover, it is fully adapted to the various manufacturing technologies for large-scale production as the blow-fill-an-seal. However, the temperature value admitted for sterilisation is 121°C, whereas LDPE exhibits a melting point at about 117°C. Therfore, we have developped an alternative cycle of sterilisation based on F0 concept at a temperature lower than 121°C and such as it respected the LDPE containers integrity. The efficiency on the micro-organisms destruction have been calculated aid of stocks spores of Bacillus Stearothermophilus introduced into the recipients which contained water for injection as base solution. The sterilised products have been followed throughout this period. The information obtained by this work have the aim of documenting a manufacturing authorization file about products for injection for its recording with the benefit of a pharmaceutical industry of Amiens
Aucejo-Galindo, Vicente. "Méthode tensorielle générale pour une modélisation multiphysique de dispositifs magnétomécaniques rapides". Electronic Thesis or Diss., Metz, 2010. http://www.theses.fr/2010METZ028S.
Currently the goal of knowledge magnetomechanical devices is completed by means of several complementary approaches. On one hand the physical approach with mathematical formulations of magnetic forces. On the other hand, multiphysics approaches to achieve a deeper insight and more real, physical phenomena associated with interactions that act in the devices. And finally, the interdisciplinary approach that takes into account the lifecycle of the product, so called eco-design. A design of a ultra fast micromotor with induced magnetization and axial flux is presented in this paper with the physical approach showing the restrictions thereof. Accordingly therefore, the physical approach, a new tensor method is developed as a general contribution to a multiphysics modeling of magnetomechanical devices, bringing together the various numerical formulations of magnetic forces. A characterization of the new tensor is presented and applied to calculate the forces on bodies in contact
Libros sobre el tema "Méthode à densité":
Centre canadien de la technologie des minéraux et de l'énergie. Nouvelle Méthode de Déconvolution Pour L'analyse des Spectres de Distribution de la Densité de Probabilité Obtenus Lors de Mesures D'interrogation Aux Rayons Gamma D'écoulements Multiphases. S.l: s.n, 1985.
Capítulos de libros sobre el tema "Méthode à densité":
RABTA, Boualem, Ouiza LEKADIR y Djamil AÏSSANI. "Stabilité forte des systèmes et réseaux de files d’attente : synthèse et perspectives". En Théorie des files d’attente 1, 299–336. ISTE Group, 2021. http://dx.doi.org/10.51926/iste.9001.ch9.
LASOCKI, Stanisław. "Estimation de la densité par noyau en sismologie". En Méthodes et modèles statistiques pour la sismogenèse, 5–31. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9037.ch1.
Hervé, Jean-Pierre. "Chapitre 2 : Méthodes d’évaluation des densités de populations d’Aedes aegypti". En La dengue dans les départements français d’Amérique, 16–28. IRD Éditions, 2003. http://dx.doi.org/10.4000/books.irdeditions.2708.
Actas de conferencias sobre el tema "Méthode à densité":
Gellee, T. y B. Philippe. "Utilisation combinée des biomatériaux xénogéniques et d’os autologue en chirurgie reconstructrice préimplantaire : Réflexions à propos de quatre indications méconnues". En 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206602008.
Bayet, K. y B. Philippe. "Densité osseuse des crêtes prémaxillaires reconstituées par apposition d’os cortical membraneux et intérêt de la chirurgie implantaire guidée". En 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206602004.
Jiménez Romera, Carlos, Agustín Hernández Aja y Mariano Vázquez Espí. "Urban compactness and growth patterns in Spanish intermediate cities". En 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.6060.
Informes sobre el tema "Méthode à densité":
Meloche, Jean-Philippe, Jérôme Dupras, Andrew Gonzales, Justin Leroux y François Vaillancourt. Étude sur la mise en œuvre d’outils d’écofiscalité au service de la conservation et de l’adaptation aux changements climatiques dans les basses-terres du Saint-Laurent. CIRANO, junio de 2023. http://dx.doi.org/10.54932/kgdx2810.
Meloche, Jean-Philippe, Cédric Bourbonnais, Arnaud Dragicevic, Tejasvi Hora, Noémie Lacroix, Julie Lebert, Justin Leroux et al. Étude sur la mise en œuvre d’outils d’écofiscalité au service de la conservation et de l’adaptation aux changements climatiques dans les basses-terres du Saint-Laurent. CIRANO, junio de 2023. http://dx.doi.org/10.54932/momv7435.