Gotowa bibliografia na temat „Quantile géométrique”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Spis treści
Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Quantile géométrique”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Artykuły w czasopismach na temat "Quantile géométrique"
Lestienne, Rémy. "Whitehead, la Mécanique Quantique et les relations esprit-matière". Lato Sensu: Revue de la Société de philosophie des sciences 8, nr 1 (9.03.2021): 1–11. http://dx.doi.org/10.20416/lsrsps.v8i1.1.
Pełny tekst źródłaBeazley, Elizabeth T. "Maximal Newton polygons via the quantum Bruhat graph". Discrete Mathematics & Theoretical Computer Science DMTCS Proceedings vol. AR,..., Proceedings (1.01.2012). http://dx.doi.org/10.46298/dmtcs.3092.
Pełny tekst źródłaRhoades, Brendon. "The cluster and dual canonical bases of Z [x_11, ..., x_33] are equal". Discrete Mathematics & Theoretical Computer Science DMTCS Proceedings vol. AN,..., Proceedings (1.01.2010). http://dx.doi.org/10.46298/dmtcs.2827.
Pełny tekst źródłaRozprawy doktorskie na temat "Quantile géométrique"
Orain, Jean-Christophe. "Frustration géométrique et nouveaux états quantiques de spins dans les composés vanadates fluorés à géométrie kagomé". Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS113/document.
Pełny tekst źródłaThe search for quantum liquid state is a very active field in condensed matter research. In two dimensions, the antiferromagnetic spin 1/2 kagome lattice seems to be the most able to stabilize such a ground state. Indeed, from recent theoretical investigations, we are now quite sure that this model has a quantum spin liquid ground state. However, we still do not know its nature, in particular the nature of its correlations. They could be short ranged with a gap in the excitation spectrum, or long ranged with a gapless excitation spectrum. On the experimental side, only few materials exist and only one possesses a geometrically perfect lattice, the Herbertsmithite. All the experiments that have been done on this compound reveal a gapless spin liquid state along with deviations to the spin 1/2 Heisenberg hamiltonian which could be responsible of the gap closure.This thesis deals with the experimental study, mainly by NMR and µSR, of new vanadium based kagomé compounds which are part of a newly synthesized family, the kagome fluoride vanadates. The material that we studied the most is a spin 1/2 kagomé compound based on V4+, (NH4)2[C7H14N][V7O6F18] (DQVOF). The magnetic model of this compound can be decomposed in two rather independent parts, trimerized kagome planes and quasi paramagnetic V3+ ions. The µSR studies, showing the absence of frozen moment down to 20 mK, reveal a spin liquid ground state in DQVOF. The heat capacity and the NMR experiments point out a gapless behavior despite trimerization and likely weak Dzyaloshinskii Moriya interactions. Our results demonstrate that the gapless ground state, whether intrinsic or due to deviation to the ideal hamiltonian, is a rather robust characteristic of kagome materials.Furthermore, we studied another compound of this family, (NH4)2[C2H8N][V3F12] (DDVF), which magnetic lattice is made of uncoupled kagomé planes based on V3+ (S = 1). The lattice shows large deviations to the ideal kagomé and the thermodynamic experiments and the µSR studies reveal a magnetic transition to a frozen state at 10 K with a long distance order which is effective only below 6 K
Romon, Gabriel. "Contributions to high-dimensional, infinite-dimensional and nonlinear statistics". Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAG013.
Pełny tekst źródłaThree topics are explored in this thesis: inference in high-dimensional multi-task regression, geometric quantiles in infinite-dimensional Banach spaces and generalized Fréchet means in metric trees. First, we consider a multi-task regression model with a sparsity assumption on the rows of the unknown parameter matrix. Estimation is performed in the high-dimensional regime using the multi-task Lasso estimator. To correct for the bias induced by the penalty, we introduce a new data-driven object that we call the interaction matrix. This tool lets us develop normal and chi-square asymptotic distribution results, from which we obtain confidence intervals and confidence ellipsoids in sparsity regimes that are not covered by the existing literature. Second, we study the geometric quantile, which generalizes the classical univariate quantile to normed spaces. We begin by providing new results on the existence and uniqueness of geometric quantiles. Estimation is then conducted with an approximate M-estimator and we investigate its large-sample properties in infinite dimension. When the population quantile is not uniquely defined, we leverage the theory of variational convergence to obtain asymptotic statements on subsequences in the weak topology. When there is a unique population quantile, we show that the estimator is consistent in the norm topology for a wide range of Banach spaces including every separable uniformly convex space. In separable Hilbert spaces, we establish novel Bahadur-Kiefer representations of the estimator, from which asymptotic normality at the parametric rate follows. Lastly, we consider measures of central tendency for data that lives on a network, which is modeled by a metric tree. The location parameters that we study are called generalized Fréchet means: they obtained by relaxing the square in the definition of the Fréchet mean to an arbitrary convex nondecreasing loss. We develop a notion of directional derivative in the tree, which helps us locate and characterize the minimizers. We examine the statistical properties of the corresponding M-estimator: we extend the notion of stickiness to the setting of metrics trees, and we state a non-asymptotic sticky theorem, as well as a sticky law of large numbers. For the Fréchet median, we develop non-asymptotic concentration bounds and sticky central limit theorems
Razaaly, Nassim. "Rare Event Estimation and Robust Optimization Methods with Application to ORC Turbine Cascade". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX027.
Pełny tekst źródłaThis thesis aims to formulate innovative Uncertainty Quantification (UQ) methods in both Robust Optimization (RO) and Reliability-Based Design Optimization (RBDO) problems. The targeted application is the optimization of supersonic turbines used in Organic Rankine Cycle (ORC) power systems.Typical energy sources for ORC power systems feature variable heat load and turbine inlet/outlet thermodynamic conditions. The use of organic compounds with a heavy molecular weight typically leads to supersonic turbine configurations featuring supersonic flows and shocks, which grow in relevance in the aforementioned off-design conditions; these features also depend strongly on the local blade shape, which can be influenced by the geometric tolerances of the blade manufacturing. A consensus exists about the necessity to include these uncertainties in the design process, so requiring fast UQ methods and a comprehensive tool for performing shape optimization efficiently.This work is decomposed in two main parts. The first one addresses the problem of rare events estimation, proposing two original methods for failure probability (metaAL-OIS and eAK-MCS) and one for quantile computation (QeAK-MCS). The three methods rely on surrogate-based (Kriging) adaptive strategies, aiming at refining the so-called Limit-State Surface (LSS) directly, unlike Subset Simulation (SS) derived methods. Indeed, the latter consider intermediate threshold associated with intermediate LSSs to be refined. This direct refinement property is of crucial importance since it enables the adaptability of the developed methods for RBDO algorithms. Note that the proposed algorithms are not subject to restrictive assumptions on the LSS (unlike the well-known FORM/SORM), such as the number of failure modes, however need to be formulated in the Standard Space. The eAK-MCS and QeAK-MCS methods are derived from the AK-MCS method and inherit a parallel adaptive sampling based on weighed K-Means. MetaAL-OIS features a more elaborate sequential refinement strategy based on MCMC samples drawn from a quasi-optimal ISD. It additionally proposes the construction of a Gaussian mixture ISD, permitting the accurate estimation of small failure probabilities when a large number of evaluations (several millions) is tractable, as an alternative to SS. The three methods are shown to perform very well for 2D to 8D analytical examples popular in structural reliability literature, some featuring several failure modes, all subject to very small failure probability/quantile level. Accurate estimations are performed in the cases considered using a reasonable number of calls to the performance function.The second part of this work tackles original Robust Optimization (RO) methods applied to the Shape Design of a supersonic ORC Turbine cascade. A comprehensive Uncertainty Quantification (UQ) analysis accounting for operational, fluid parameters and geometric (aleatoric) uncertainties is illustrated, permitting to provide a general overview over the impact of multiple effects and constitutes a preliminary study necessary for RO. Then, several mono-objective RO formulations under a probabilistic constraint are considered in this work, including the minimization of the mean or a high quantile of the Objective Function. A critical assessment of the (Robust) Optimal designs is finally investigated
Girelli, Florian. "Géométrie non commutative et gravité quantique". Aix-Marseille 1, 2002. http://www.theses.fr/2002AIX11039.
Pełny tekst źródłaBaboin, Anne-Céline. "Calcul quantique : algèbre et géométrie projective". Phd thesis, Université de Franche-Comté, 2011. http://tel.archives-ouvertes.fr/tel-00600387.
Pełny tekst źródłaBaboin, Anne-Céline. "Calcul quantique : algèbre et géométrie projective". Electronic Thesis or Diss., Besançon, 2011. http://www.theses.fr/2011BESA2028.
Pełny tekst źródłaThe first vocation of this thesis would be a state of the art on the field of quantum computation, if not exhaustive, simple access (chapters 1, 2 and 3). The original (interesting) part of this treatise consists of two mathematical approaches of quantum computation concerning some quantum systems : the first one is an algebraic nature and utilizes some particular structures : Galois fields and rings (chapter 4), the second one calls to a peculiar geometry, known as projective one (chapter 5). These two approaches were motivated by the theorem of Kochen and Specker and by work of Peres and Mermin which rose from it
Zhang, Mingyi. "Gravité quantique à boucles et géométrie discrète". Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4027/document.
Pełny tekst źródłaIn this thesis, I will present how to extract discrete geometries of space-time fromthe covariant formulation of loop quantum gravity (LQG), which is called the spinfoam formalism. LQG is a quantum theory of gravity that non-perturbative quantizesgeneral relativity independent from a fix background. It predicts that the geometryof space is quantized, in which area and volume can only take discrete value. Thekinematical Hilbert space is spanned by Penrose's spin network functions. The excita-tion of geometry can be neatly visualized as fuzzy polyhedra that glued through theirfacets. The spin foam defines the dynamics of LQG by a spin foam amplitude on acellular complex, bounded by the spin network states. There are three main results inthis thesis. First, the semiclassical limit of the spin foam amplitude on an arbitrarysimplicial cellular complex with boundary is studied completely. The classical discretegeometry of space-time is reconstructed and classified by the critical configurations ofthe spin foam amplitude. Second, the three-point function from LQG is calculated.It coincides with the results from discrete gravity. Third, the description of discretegeometries of null hypersurfaces is explored in the context of LQG. In particular, thenull geometry is described by a Euclidean singular structure on the two-dimensionalspacelike surface defined by a foliation of space-time by null hypersurfaces. Its quan-tization is U(1) spin network states which are embedded nontrivially in the unitaryirreducible representations of the Lorentz group
Christodoulou, Marios. "Transition de géométrie en gravité quantique à boucles covariante". Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0273.
Pełny tekst źródłaIn this manuscript we present a calculation from covariant Loop Quantum Gravity, of a physical observable in a non-perturbative quantum gravitational physical process. The process regards the transition of a trapped region to an anti--trapped region and is treated as a quantum geometry transition akin to gravitational tunneling. The physical observable is the characteristic timescale in which the process takes place. We start with a top--to--bottom formal derivation of the ansatz defining the amplitudes for covariant LQG, starting from the Hilbert-Einstein action. We then take the bottom--to--top path, starting from the EPRL ansatz, to the sum--over--geometries path integral emerging in the semi-classical limit, and discuss its close relation to the naive path integral over the Regge action. We proceed to the construction of wave--packets describing quantum spacelike three-geometries that include a notion of embedding in a Lorentzian spacetime. We derive a simple estimation for the amplitudes describing geometry transition and show that a probabilistic description for such phenomena emerges, with the probability of the phenomena to take place being in general non-vanishing.The Haggard-Rovelli spacetime, modelling the spacetime surrounding the geometry transition region for a black to white hole process, is formulated. We then use the semi--classical approximation to give a general estimation of amplitudes describing the process. We conclude that the transition is predicted to be allowed by LQG, with a crossing time that is linear in the mass. The probability for the process to take place is suppressed but non-zero
Chaouch, Mohamed. "Contribution à l'estimation non paramétrique des quantiles géométriques et à l'analyse des données fonctionnelles". Phd thesis, Université de Bourgogne, 2008. http://tel.archives-ouvertes.fr/tel-00364538.
Pełny tekst źródłaDjellali, Nadia. "Vers le contrôle géométrique de l'émission de microcavités laser à base de polymères". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2009. http://tel.archives-ouvertes.fr/tel-00516337.
Pełny tekst źródłaKsiążki na temat "Quantile géométrique"
Colloque geometrie et physique (1986 Paris, France). Physique quantique et géométrie: Formulation mathématique cohérente des phénoménes quantiques : Colloque Géométrie et Physique de 1986 en l'honneur d'André Lichnerowicz. Paris: Hermann, 1988.
Znajdź pełny tekst źródłaGauge field theory and complex geometry. Berlin: Springer-Verlag, 1988.
Znajdź pełny tekst źródłaI, Manin I͡U. Gauge field theory and complex geometry. Wyd. 2. Berlin: Springer, 1997.
Znajdź pełny tekst źródłaInc, ebrary, red. Geometry of time-spaces: Non-commutative algebraic geometry, applied to quantum theory. Singapore: World Scientific, 2011.
Znajdź pełny tekst źródłaE, Witten, red. Lecture notes on Chern-Simons-Witten theory. Singapore: World Scientific, 2001.
Znajdź pełny tekst źródła1931-, Doebner H. D., Hennig J. D i Palev T. D, red. Lectures on supermanifolds, geometrical methods & conformal groups given at Varna, Bulgaria. Singapore: World Scientific, 1989.
Znajdź pełny tekst źródła128 i Geneviève Martin. Panorama sur l'optique : De l'optique géométrique à l'optique quantique. Nathan Université, 1998.
Znajdź pełny tekst źródłaFelden. Le modèle géométrique de la physique: L'espace et le problème de l'interprétation en relativité et en physique quantique. Dunod, 1997.
Znajdź pełny tekst źródłaGeometric And Algebraic Topological Methods In Quantum Mechanics. World Scientific Publishing Company, 2005.
Znajdź pełny tekst źródła(Editor), Yoshiaki Maeda, Peter Michor (Editor), Takushiro Ochiai (Editor) i Akira Yoshioka (Editor), red. From Geometry to Quantum Mechanics: In Honor of Hideki Omori (Progress in Mathematics). Birkhäuser Boston, 2006.
Znajdź pełny tekst źródła