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Contribution A Letude Des Solutions Non Lineaires De Lequation De Vlasov Par Le Modele Water Bag
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Book Synopsis Documentation of Plasma Physics. Pt. 1, Experimental Plasma Physics [and] Theoretical Plasma Physics by :
Download or read book Documentation of Plasma Physics. Pt. 1, Experimental Plasma Physics [and] Theoretical Plasma Physics written by and published by . This book was released on 1973 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Euro Abstracts written by and published by . This book was released on 1973 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Euratom Information written by and published by . This book was released on 1973 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1974 with total page 1966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etude mathématique et numérique de l'équation de Vlasov non linéaire sur des maillages non structurés de l'espace des phases by : Nicolas Besse
Download or read book Etude mathématique et numérique de l'équation de Vlasov non linéaire sur des maillages non structurés de l'espace des phases written by Nicolas Besse and published by . This book was released on 2003 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail est consacré à l'étude mathématique et numérique de l'équation de Vlasov sur des maillages non structurés de l'espace des phases. Dans une première partie on présente de nouvelles méthodes numériques de type semi-Lagrangien pour résoudre l'équation de Vlasov sur des maillages non structurés de l'espace des phases. L'équation de Vlasov mettant en jeu des phénomènes physiques multi-échelles on présente aussi des méthodes numériques adaptatives basées sur une analyse multi-résolution par ondelettes, conduisant à un raffinement adaptatif de maillages. L'apparition des supercalculateurs massivement parallèle permet de considérer ces méthodes en plusieurs dimensions dans l'espace des phases. Dans le but d'appliquer ces nouvelles méthodes aux domaines de la physique des plasmas et de la propagation des faisceaux de particules chargées on considère le système de Vlasov-Poisson à deux, trois et quatre dimensions dans l'espace des phases. Dans la deuxième partie on présente des preuves rigoureuses de la convergence de plusieurs schémas numériques pour le système de Vlasov-Poisson et des estimations a priori sur la vitesse de convergence des suites de solutions construites vers la solution du problème continu dans le cadre des solutions fortes et classiques. D'abord on démontre la convergence d'un schéma semi-Lagrangien sur un maillage non structuré de l'espace des phases avec des hypothèses de régularité minimales sur les données initiales. Lorsque les solutions classiques sont assez régulières, on prouve la convergence de plusieurs classes de schémas semi-Lagrangien d'ordre élevé selon que l'on envisage des reconstructions à partir de bases de polynômes de Lagrange symétriques, de B-splines et d'ondelettes. Enfin on montre la convergence d'un schéma semi-Lagrangien dans lequel on propage les gradients de la fonction de distribution afin d'obtenir une reconstruction d'ordre élevé et stable de la solution.
Book Synopsis Méthodes numériques pour l'équation de Vlasov by : Yacine Benhadid
Download or read book Méthodes numériques pour l'équation de Vlasov written by Yacine Benhadid and published by . This book was released on 2001 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE TRAITE DE SOLUTIONS D'EQUATIONS AUX DERIVEES PARTIELLES ISSUES DE LA PHYSIQUE DE PLASMAS. PLUS PRECISEMENT, ELLE EST CONSACRE A LA RESOLUTION NUMERIQUE DES SYSTEMES DE VLASOV-POISSON ET DE VLASOV-MAXWELL QUI DECRIVENT LE COMPORTEMENT D'UN PLASMA. DANS UNE PREMIERE PARTIE, ON EXPOSE LA PROBLEMATIQUE DE LA RECHERCHE DE RESULTATS NUMERIQUES POUR LE SYSTEME DE VLASOV-POISSON UNIDIMENSIONNEL. ON PROPOSE UNE METHODE BASEE SUR LA DECOMPOSITION EN ONDELETTES DE L'OPERATEUR DE DERIVATION. DE TELLES METHODES ONT ETE UTILISE AVEC SUCCES DANS LE CADRE D'AUTRES EQUATIONS ISSUES DE LA PHYSIQUE MATHEMATIQUE (EN PARTICULIER CELLES DE LA MECANIQUE DES FLUIDES INCOMPRESSIBLES). APRES UNE PRESENTATION GENERALE DES ONDELETTES, ON SE FONDE SUR LA REPRESENTATION D'UN OPERATEUR EN BASES D'ONDELETTES A SUPPORT COMPACT POUR LA RESOLUTION ET MONTRE DES RESULTATS NUMERIQUES DE CALCULS DE LA SOLUTION DU SYSTEME DE VLASOV-POISSON (1D EN ESPACE ET 1D EN VITESSE). LA DEUXIEME PARTIE EST CONSACREE A LA RESOLUTION NUMERIQUE DU SYSTEME DE VLASOV-POISSON BIDIMENSIONNEL (2D EN ESPACE ET 2D EN VITESSE). IL S'AGIT D'ESSAYER D'ADAPTER LES SCHEMAS ESSENTIELLEMENT NON OSCILLATOIRES (ENO ET WENO), INITIALEMENT CONÇUS POUR TRAITER LES PROBLEMES DE SYSTEME HYPERBOLIQUES NON-LINEAIRES, A L'EQUATION DE VLASOV. APRES UNE PRESENTATION DE SES SCHEMAS, ON DONNE UNE METHODE PERMETTANT DE REDUIRE LE NOMBRE D'ETAPES ET ON EXPOSE DES RESULTATS NUMERIQUES SOUS FORME DE FIGURES. LA DERNIERE PARTIE DE LA THESE EST CONSACREE A LA RESOLUTION NUMERIQUE DES EQUATIONS DE MAXWELL, POUR LEUR COUPLAGE AVEC L'EQUATION DE VLASOV, SPECIALEMENT DANS DES SYSTEMES NON PERIODIQUES ET OUVERTS. DANS CE CAS LA DECOMPOSITION EN ONDES CIRCULAIRES PERMET D'OBTENIR DES SOLUTIONS STABLES SANS L'INTRODUCTION DE TERMES ARTIFICIELS D'AMORTISSEMENT.
Book Synopsis Contribution à l'étude des équations aux dérivées partielles à retard et de type neutre by : Mostafa Laklach
Download or read book Contribution à l'étude des équations aux dérivées partielles à retard et de type neutre written by Mostafa Laklach and published by . This book was released on 2001 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail aborde la théorie des équations aux dérivées partielles à retard et des équations aux dérivées partielles de type neutre. On rencontre les équations aux dérivées partielles à retard dans de très nombreux domaines : physique, dynamique de populations, biologie, contrôle optimal, etc. D'une manière générale, les retards apparaissent à cause du temps nécessaire pour que le système réponde à une certaine évolution ou parce qu'un certain seuil doit être atteint avant que le système ne soit activé. Les équations à retard discret sont définies à partir de distributions de Dirac en des points de la demi-droite négative. Les équations aux dérivées partielles de type neutre font intervenir le produit de composition d'opérateurs de derivation en temps et espace, et de mesures à support sur la demi-droite temporelle négative. Ces dernières équations trouvent leur motivation dans l'apparition récente de modèles de circuits électriques constitués d'une grande quantité d'oscillateurs. C'est un exemple classique, dans la théorie des équations différentielles, qu'un circuit électrique non linéaire peut être réduit à une équation de type neutre. L'étude de ce problème a été initiée, ces dernières années, par j.Wu et ses collaborateurs. Il est bien connu que la méthode des semi-groupes permet de traiter une très large classe d'équations aux dérivées partielles à retard et de type neutre. Néanmoins, il existe des situations ou les opérateurs qui interviennent dans ces équations sont à domaine non dense et par conséquent, n'engendrent pas de semi-groupes. La méthode que nous avons utilisée dans cette thèse nous a permis de surmonter cette difficulté. Les principaux résultats obtenus dans ce domaine sont : des résultats d'existence locale et globale, la propriété du semi-groupe et son générateur infinitésimal, la décomposition spectrale de l'espace d'état en somme directe de sous-espaces invariants par le semi-groupe linéaire, des résultats d'existence de solutions bornées, périodiques et presque-periodiques, et l'existence d'un semi-groupe non linéaire par la formule exponentielle de Crandall-Liggett. Nous avons aussi démontré le théorème de bifurcation de Hopf locale pour les équations aux dérivées partielles à retard, ce qui correspond à un résultat d'existence de solutions périodiques.
Book Synopsis Bogoliubov-de Gennes Method and Its Applications by : Jian-Xin Zhu
Download or read book Bogoliubov-de Gennes Method and Its Applications written by Jian-Xin Zhu and published by Springer. This book was released on 2016-06-21 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to provide an elementary yet systematic description of the Bogoliubov-de Gennes (BdG) equations, their unique symmetry properties and their relation to Green’s function theory. Specifically, it introduces readers to the supercell technique for the solutions of the BdG equations, as well as other related techniques for more rapidly solving the equations in practical applications. The BdG equations are derived from a microscopic model Hamiltonian with an effective pairing interaction and fully capture the local electronic structure through self-consistent solutions via exact diagonalization. This approach has been successfully generalized to study many aspects of conventional and unconventional superconductors with inhomogeneities – including defects, disorder or the presence of a magnetic field – and becomes an even more attractive choice when the first-principles information of a typical superconductor is incorporated via the construction of a low-energy tight-binding model. Further, the lattice BdG approach is essential when theoretical results for local electronic states around such defects are compared with the scanning tunneling microscopy measurements. Altogether, these lectures provide a timely primer for graduate students and non-specialist researchers, while also offering a useful reference guide for experts in the field.
Book Synopsis Introduction to Plasma Physics by : Donald A. Gurnett
Download or read book Introduction to Plasma Physics written by Donald A. Gurnett and published by Cambridge University Press. This book was released on 2017-02-20 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introducing basic principles of plasma physics and their applications to space, laboratory and astrophysical plasmas, this new edition provides updated material throughout. Topics covered include single-particle motions, kinetic theory, magnetohydrodynamics, small amplitude waves in hot and cold plasmas, and collisional effects. New additions include the ponderomotive force, tearing instabilities in resistive plasmas and the magnetorotational instability in accretion disks, charged particle acceleration by shocks, and a more in-depth look at nonlinear phenomena. A broad range of applications are explored: planetary magnetospheres and radiation belts, the confinement and stability of plasmas in fusion devices, the propagation of discontinuities and shock waves in the solar wind, and analysis of various types of plasma waves and instabilities that can occur in planetary magnetospheres and laboratory plasma devices. With step-by-step derivations and self-contained introductions to mathematical methods, this book is ideal as an advanced undergraduate to graduate-level textbook, or as a reference for researchers.
Book Synopsis Quantum Theory and Symmetries by : M. B. Paranjape
Download or read book Quantum Theory and Symmetries written by M. B. Paranjape and published by Springer Nature. This book was released on 2021 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume of the CRM Conference Series is based on a carefully refereed selection of contributions presented at the "11th International Symposium on Quantum Theory and Symmetries", held in Montreal, Canada from July 1-5, 2019. The main objective of the meeting was to share and make accessible new research and recent results in several branches of Theoretical and Mathematical Physics, including Algebraic Methods, Condensed Matter Physics, Cosmology and Gravitation, Integrability, Non-perturbative Quantum Field Theory, Particle Physics, Quantum Computing and Quantum Information Theory, and String/ADS-CFT. There was also a special session in honour of Decio Levi. The volume is divided into sections corresponding to the sessions held during the symposium, allowing the reader to appreciate both the homogeneity and the diversity of mathematical tools that have been applied in these subject areas. Several of the plenary speakers, who are internationally recognized experts in their fields, have contributed reviews of the main topics to complement the original contributions. .
Author :D. Alistair Steyn-Ross Publisher :Springer Science & Business Media ISBN 13 :1441907963 Total Pages :325 pages Book Rating :4.4/5 (419 download)
Book Synopsis Modeling Phase Transitions in the Brain by : D. Alistair Steyn-Ross
Download or read book Modeling Phase Transitions in the Brain written by D. Alistair Steyn-Ross and published by Springer Science & Business Media. This book was released on 2010-03-14 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword by Walter J. Freeman. The induction of unconsciousness using anesthetic agents demonstrates that the cerebral cortex can operate in two very different behavioral modes: alert and responsive vs. unaware and quiescent. But the states of wakefulness and sleep are not single-neuron properties---they emerge as bulk properties of cooperating populations of neurons, with the switchover between states being similar to the physical change of phase observed when water freezes or ice melts. Some brain-state transitions, such as sleep cycling, anesthetic induction, epileptic seizure, are obvious and detected readily with a few EEG electrodes; others, such as the emergence of gamma rhythms during cognition, or the ultra-slow BOLD rhythms of relaxed free-association, are much more subtle. The unifying theme of this book is the notion that all of these bulk changes in brain behavior can be treated as phase transitions between distinct brain states. Modeling Phase Transitions in the Brain contains chapter contributions from leading researchers who apply state-space methods, network models, and biophysically-motivated continuum approaches to investigate a range of neuroscientifically relevant problems that include analysis of nonstationary EEG time-series; network topologies that limit epileptic spreading; saddle--node bifurcations for anesthesia, sleep-cycling, and the wake--sleep switch; prediction of dynamical and noise-induced spatiotemporal instabilities underlying BOLD, alpha-, and gamma-band Hopf oscillations, gap-junction-moderated Turing structures, and Hopf-Turing interactions leading to cortical waves.
Book Synopsis Small-Animal SPECT Imaging by : Matthew A. Kupinski
Download or read book Small-Animal SPECT Imaging written by Matthew A. Kupinski and published by Springer Science & Business Media. This book was released on 2007-05-27 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small-Animal SPECT Imaging is an edited work derived from the first workshop on Small-Animal SPECT Imaging held January 14-16, 2004 at the University of Arizona, Tucson, AZ, USA. The overall goal of the meeting and therefore this volume is to promote information exchange and collaboration between the research groups developing systems for small-animal applications. Topics include the biomedical significance of small-animal imaging, an overview of detector technologies including scintillation cameras and semi-conductor arrays, imager design and data acquisition systems, animal handling and anesthesia issues, objective assessment of image quality, and system modeling and reconstruction algorithms.
Book Synopsis Discrete Painlevé Equations by : Nalini Joshi
Download or read book Discrete Painlevé Equations written by Nalini Joshi and published by American Mathematical Soc.. This book was released on 2019-05-30 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Painlevé equations are nonlinear difference equations, which arise from translations on crystallographic lattices. The deceptive simplicity of this statement hides immensely rich mathematical properties, connecting dynamical systems, algebraic geometry, Coxeter groups, topology, special functions theory, and mathematical physics. This book necessarily starts with introductory material to give the reader an accessible entry point to this vast subject matter. It is based on lectures that the author presented as principal lecturer at a Conference Board of Mathematical Sciences and National Science Foundation conference in Texas in 2016. Instead of technical theorems or complete proofs, the book relies on providing essential points of many arguments through explicit examples, with the hope that they will be useful for applied mathematicians and physicists.
Book Synopsis Nonlinear Magnetohydrodynamics by : D. Biskamp
Download or read book Nonlinear Magnetohydrodynamics written by D. Biskamp and published by Cambridge University Press. This book was released on 1997-07-17 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained introduction to magnetohydrodynamics with emphasis on nonlinear processes.
Book Synopsis Non-Smooth Dynamical Systems by : Markus Kunze
Download or read book Non-Smooth Dynamical Systems written by Markus Kunze and published by Springer. This book was released on 2014-01-15 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a self-contained introduction to the mathematical theory of non-smooth dynamical problems, as they frequently arise from mechanical systems with friction and/or impacts. It is aimed at applied mathematicians, engineers, and applied scientists in general who wish to learn the subject.
Book Synopsis Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air by : William T. Winberry
Download or read book Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air written by William T. Winberry and published by . This book was released on 1988 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Symplectic Geometry by : Rolf Berndt
Download or read book An Introduction to Symplectic Geometry written by Rolf Berndt and published by American Mathematical Soc.. This book was released on 2001 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symplectic geometry is a central topic of current research in mathematics. Indeed, symplectic methods are key ingredients in the study of dynamical systems, differential equations, algebraic geometry, topology, mathematical physics and representations of Lie groups. This book is a true introduction to symplectic geometry, assuming only a general background in analysis and familiarity with linear algebra. It starts with the basics of the geometry of symplectic vector spaces. Then, symplectic manifolds are defined and explored. In addition to the essential classic results, such as Darboux's theorem, more recent results and ideas are also included here, such as symplectic capacity and pseudoholomorphic curves. These ideas have revolutionized the subject. The main examples of symplectic manifolds are given, including the cotangent bundle, Kähler manifolds, and coadjoint orbits. Further principal ideas are carefully examined, such as Hamiltonian vector fields, the Poisson bracket, and connections with contact manifolds. Berndt describes some of the close connections between symplectic geometry and mathematical physics in the last two chapters of the book. In particular, the moment map is defined and explored, both mathematically and in its relation to physics. He also introduces symplectic reduction, which is an important tool for reducing the number of variables in a physical system and for constructing new symplectic manifolds from old. The final chapter is on quantization, which uses symplectic methods to take classical mechanics to quantum mechanics. This section includes a discussion of the Heisenberg group and the Weil (or metaplectic) representation of the symplectic group. Several appendices provide background material on vector bundles, on cohomology, and on Lie groups and Lie algebras and their representations. Berndt's presentation of symplectic geometry is a clear and concise introduction to the major methods and applications of the subject, and requires only a minimum of prerequisites. This book would be an excellent text for a graduate course or as a source for anyone who wishes to learn about symplectic geometry.
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