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Book Description
ETUDE DES PHENOMENES ALTERANT LA PROPAGATION DES ONDES MILLIMETRIQUES AU-DESSUS DE LA MER: REFLEXION SUR LA SURFACE DE LA MER, ATTENUATION PAR LA PLUIE, CONDITIONS ATMOSPHERIQUES NON STANDARD
Book Description
ETUDE DES PHENOMENES ALTERANT LA PROPAGATION DES ONDES MILLIMETRIQUES AU-DESSUS DE LA MER: REFLEXION SUR LA SURFACE DE LA MER, ATTENUATION PAR LA PLUIE, CONDITIONS ATMOSPHERIQUES NON STANDARD
Book Description
DEVELOPPEMENT D'UN MODELE NON LINEAIRE DECRIVANT LA MAREE DANS UNE MER LITTORALE, CONSIDEREE COMME UNE SUPERPOSITION D'ONDES ELEMENTAIRES CARACTERISEES CHACUNE PAR UNE FREQUENCE BIEN DETERMINEE. ON RECHERCHE UNE FORMULATION ANALYTIQUE DE L'AMPLITUDE ET LA PHASE DE LA DENIVELLATION ET DE LA VITESSE POUR LES DIFFERENTS HARMONIQUES A L'AIDE DU DEVELOPPEMENT SPECTRAL DES SOLUTIONS. LE PROBLEME DE LA PROPAGATION D'UNE ONDE LONGUE EST ANALYSE EN TENANT COMPTE DU FROTTEMENT QUADRATIQUE AU MOYEN DE SERIES DE FOURIER. LES SOLUTIONS SONT DEVELOPPEES JUSQU'AU SECOND ORDRE AVEC LA METHODE DU PETIT PARAMETRE. ON PEUT ACCELERER LA CONVERGENCE EN FAISANT APPARAITRE DES LE PREMIER ORDRE UNE PART DE FROTTEMENT LINEARISE
Author: Hervé Sizun Publisher: Springer Science & Business Media ISBN: 3540266682 Category : Technology & Engineering Languages : en Pages : 423
Book Description
This book describes the physical mechanisms involved in the propagation of electromagnetic waves in the radiofrequency range, inside and outside buildings, in the terrestrial and near space environments, with a special focus on mobile radio communication. It combines a theoretical and an experimental approaches with an understanding of the physical environment through adequate formulations of the laws of electromagnetism. It should thus provide the background needed by advanced students and development engineers for the conception of high quality and reliable telecommunication systems.
Author: Jacques Lafontaine Publisher: Springer ISBN: 3319207350 Category : Mathematics Languages : en Pages : 408
Book Description
This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.
Author: Yvonick Hurtaud
Author: Yvonick Hurtaud
Author: Emmanuel Renoux
Author: Jean Nakache
Author: Jean-Pierre Dagnaux
Author: Abdelhak Kabbaj
Author: 
Author: Marc Brayer
Author: Hervé Sizun
Author: Lucien Boithias
Author: Jacques Lafontaine