Download or read book ESTIMATION DE L ETAT DE SYSTEMES LINEAIRES INCERTAINS ET DE SYSTEMES NON LINEAIRES written by Gerhard Schreier and published by . This book was released on 1997 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE DE LA STABILITE ET LA RECONSTRUCTION D'ETAT DES SYSTEMES SONT DEUX ETAPES INDISPENSABLES A L'AMELIORATION DES LOIS DE COMMANDE ; LA PRESENCE D'INCERTITUDE SUR LES PARAMETRES RENDENT CES DEUX PROBLEMES ENCORE PLUS DELICATS. LA STABILITE D'UN SYSTEME INCERTAIN EST GENERALEMENT ANALYSEE A L'AIDE DE LA DEUXIEME METHODE DE LYAPUNOV. NOUS AVONS ETUDIE UNE CLASSE DE SYSTEME LINEAIRE INCERTAIN EN UTILISANT L'EQUATION GENERALISEE DE LYAPUNOV POUR GARANTIR SIMULTANEMENT LA STABILITE ET LES PERFORMANCES DYNAMIQUES DU SYSTEME. NOUS AVONS PROPOSE QUELQUES TECHNIQUES DE RECONSTRUCTION DE L'ETAT DES SYSTEMES LINEAIRES INCERTAINS. EN UTILISANT L'OBSERVATEUR DE LUENBERGER ET L'OBSERVATEUR PROPORTIONNEL-INTEGRAL, NOUS REMARQUONS QUE LES ERREURS D'ESTIMATION D'ETAT NE CONVERGENT PAS FORCEMENT VERS ZERO. CES ERREURS PEUVENT ETRE BORNES PAR UN SEUIL DETERMINE PAR LA NORME H. NOUS AVONS PRESENTE UNE TECHNIQUE DE RECONSTRUCTION DE L'ETAT SANS ERREUR D'ESTIMATION BASEE SUR UN OBSERVATEUR DE LUENBERGER ETENDU. EN RECONSTRUISANT L'ETAT D'UN SYSTEME NON-LINEAIRE, L'ANALYSE DE LA STABILITE ET L'OBSERVABILITE NE DEPENDENT PAS SEULEMENT DE L'ETAT COMME DANS LE CAS LINEAIRE, ELLES DEPENDENT EN PLUS DE L'ENTREE. AINSI LA DEFINITION DE L'OBSERVABILITE UTILISEE POUR LES SYSTEMES LINEAIRES N'EST PLUS SUFFISANTE POUR LA CONSTRUCTION D'UN OBSERVATEUR DE SYSTEME NON-LINEAIRE. LA TECHNIQUE D'OBSERVATEUR DE SYSTEMES NON-LINEAIRES PROPOSEE NECESSITE DES HYPOTHESES SUR LA NON-LINEARITE DE TYPE LIPSCHITZ. CETTE METHODE MENE SOUVENT A DES OBSERVATEURS A GRAND GAIN PERMETTANT DE MASQUER LES NON-LINEARITES DU SYSTEME. TOUT D'ABORD, NOUS AVONS DISCUTE LA STABILITE D'UN SYSTEME NON-LINEAIRE AUTONOME. PUIS, NOUS AVONS PROPOSE DES REGULATEURS POUR DES SYSTEMES STABLES OU STABILISABLES. DANS CE CAS, LE GAIN DU REGULATEUR PEUT ETRE DETERMINE SOUS DEUX PERSPECTIVES DIFFERENTES : LA COMMANDE OPTIMALE DE LA PARTIE LINEAIRE OU L'OPTIMISATION DE LA CONSTANTE DE LIPSCHITZ LORSQUE LE SYSTEME DISPOSE DE DEGRES DE LIBERTE EN NOMBRE SUFFISANT. ENSUITE, NOUS AVONS PRESENTE UNE TECHNIQUE D'ESTIMATION D'ETAT D'UN SYSTEME NON-LINEAIRE OU LE GAIN DE L'OBSERVATEUR ET SA STABILITE SONT BASES SUR UNE EQUATION PARAMETREE DE LYAPUNOV. CETTE METHODE EST GENERALISEE POUR DES SYSTEMES NON-LINEAIRES SINGULIERS EN UTILISANT L'EQUATION DE LYAPUNOV AVEC UN SEUL PARAMETRE.

Download or read book M thodes Ensemblistes Pour L Estimation D tat Et de Param tres written by Tarek Raissi and published by Omniscriptum. This book was released on 2018-02-28 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce document est d di au d veloppement de m thodes ensemblistes pour l'estimation d' tat et de param tres pour des syst mes non-lin aires. Deux types de mod les sont consid r s: mod les donn s par des fonctions explicites variables complexes et mod les d crits par des quations diff rentielles ordinaires (EDOs). L'identification de param tres de mod les d crits par des fonctions explicites est r alis e l'aide des techniques d'inversion ensembliste. Par ailleurs, les mod les utilis s sont variables complexes; dans ce cas l' valuation de la sortie se fait l'aide d'intervalles complexes. Dans ce document, nous avons d velopp une arithm tique des intervalles complexes bas e sur la repr sentation polaire. Dans la deuxi me partie, des algorithmes d'estimation d' tat pour des syst mes d crits par des quations diff rentielles sont pr sent s. Ils permettent de fournir, chaque instant, un ensemble contenant d'une mani re garantie, toutes les valeurs du vecteur d' tat compatibles avec les mesures et avec les bornes d'erreurs. Ces estimateurs sont bas s sur des m thodes d'int gration garantie d'EDOs et sur l'inversion ensembliste.

Download or read book Estimation de l tat et des entr es inconnues pour une classe de syst mes non lin aires written by Estelle Cherrier and published by . This book was released on 2006 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: De façon générale, cette thèse porte sur l'estimation de l'état et des entrées inconnues pour une classe de systèmes non linéaires. De façon plus particulière, le problème est abordé sous l'angle de la conception d'un système de transmission sécurisée d'informations exploitant les propriétés des systèmes chaotiques et leur capacité de synchronisation. Les travaux présentés traitent trois points principaux, à savoir le choix de l'émetteur, le développement du récepteur, et la mise au point du processus de transmission de l'information ou du message. L'émetteur retenu est un système non linéaire chaotique dont la dynamique comporte un retard, ce qui lui confère un comportement particulièrement complexe. La conception du récepteur repose sur la synthèse d'un observateur non linéaire, dont la stabilité et la convergence garantissent la synchronisation avec l'émetteur. L'insertion du message est réalisée par modulation de la phase d'un signal porteur chaotique. Le décryptage de l'information s'apparente à une restauration d'entrée inconnue au niveau du récepteur. Une étude de la sécurité du processus de cryptage/décryptage a été menée, reposant sur des techniques standard de cryptanalyse. Des multimodèles chaotiques ont été proposés pour renforcer la sécurité du processus de synchronisation

Download or read book Dynamique Non lin aire Et Le Chaos written by and published by . This book was released on 1993 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book World Development Report 2010 written by World Bank and published by World Bank Publications. This book was released on 2009-11-06 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the crowded field of climate change reports, 'WDR 2010' uniquely: emphasizes development; takes an integrated look at adaptation and mitigation; highlights opportunities in the changing competitive landscape; and proposes policy solutions grounded in analytic work and in the context of the political economy of reform.

Download or read book Elements of Structural Syntax written by Lucien Tesnière and published by John Benjamins Publishing Company. This book was released on 2015-02-11 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume appears now finally in English, sixty years after the death of its author, Lucien Tesnière. It has been translated from the French original into German, Spanish, Italian, and Russian, and now at long last into English as well. The volume contains a comprehensive approach to the syntax of natural languages, an approach that is foundational for an entire stream in the modern study of syntax and grammar. This stream is known today as dependency grammar (DG). Drawing examples from dozens of languages, many of which he was proficient in, Tesnière presents insightful analyses of numerous phenomena of syntax. Among the highlights are the concepts of valency and head-initial vs. head-final languages. These concepts are now taken for granted by most modern theories of syntax, even by phrase structure grammars, which represent, in a sense, the opposite sort of approach to syntax from what Tesnière was advocating. Now Open Access as part of the Knowledge Unlatched 2017 Backlist Collection.

Download or read book Inclusive Green Growth written by World Bank and published by World Bank Publications. This book was released on 2012-05-01 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inclusive Green Growth: The Pathway to Sustainable Development makes the case that greening growth is necessary, efficient, and affordable. Yet spurring growth without ensuring equity will thwart efforts to reduce poverty and improve access to health, education, and infrastructure services.

Download or read book Introductory Grammar of Amharic written by Wolf Leslau and published by Otto Harrassowitz Verlag. This book was released on 2000 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book closes the gap for beginners who want to study the Amharic language and had difficulties in finding the right grammar for this purpose: The first grammar of Amharic, the national language of Ethiopia, was published by Hiob Ludolf in 1698. The Amharic grammar published by Praetorius in 1879 is based on Amharic religious texts and on scattered material, usually composed by missionaries. A milestone in the study of Amharic is Marcel Cohen's Traite de langue amharique (1936), but this grammar, too is not completely suited for beginners since the author's generalizations are at times aimed at linguists. The grammar that comes closest to the concept of a beginner's grammar is that of C.H. Dawkin (1960), yet this grammar is extremely short, does not give examples and does not introduce the student to the intricacies of the language.The new book gives all the grammatical forms and the sentences of the present grammar in Amharic script and in phonetic transcription. The illustrative examples have a free and a literal translation. This procedure should likewise prove to be useful for the Semitist as well as for the general linguist.

Download or read book Dictionary of Acronyms and Technical Abbreviations written by Jakob Vlietstra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Dictionary covers information and communication technology (ICT), including hardware and software; information networks, including the Internet and the World Wide Web; automatic control; and ICT-related computer-aided fields. The Dictionary also lists abbreviated names of relevant organizations, conferences, symposia and workshops. This reference is important for all practitioners and users in the areas mentioned above, and those who consult or write technical material. This Second Edition contains 10,000 new entries, for a total of 33,000.

Download or read book Educational Planning written by Jacques Hallak and published by Routledge. This book was released on 2018-10-24 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1995. Routledge is an imprint of Taylor & Francis, an informa company.

Download or read book Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation written by Intergovernmental Panel on Climate Change and published by Cambridge University Press. This book was released on 2012-05-28 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extreme weather and climate events, interacting with exposed and vulnerable human and natural systems, can lead to disasters. This Special Report explores the social as well as physical dimensions of weather- and climate-related disasters, considering opportunities for managing risks at local to international scales. SREX was approved and accepted by the Intergovernmental Panel on Climate Change (IPCC) on 18 November 2011 in Kampala, Uganda.

Download or read book Marine Fish Larvae written by Reuben Lasker and published by University of Washington Press. This book was released on 1981 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE LARVAL LIFE AND HISTORY OF MARINE FISHES.

Download or read book Syntactic Structures written by Noam Chomsky and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-05-18 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: No detailed description available for "Syntactic Structures".

Download or read book Recent Developments of Soil Mechanics and Geotechnics in Theory and Practice written by Theodoros Triantafyllidis and published by Springer Nature. This book was released on 2019-08-20 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides essential insights into recent developments in fundamental geotechnical engineering research. Special emphasis is given to a new family of constitutive soil description methods, which take into account the recent loading history and the dilatancy effects. Particular attention is also paid to the numerical implementation of multi-phase material under dynamic loads, and to geotechnical installation processes. In turn, the book addresses implementation problems concerning large deformations in soils during piling operations or densification processes, and discusses the limitations of the respective methods. Numerical simulations of dynamic consolidation processes are presented in slope stability analysis under seismic excitation. Lastly, achieving the energy transition from conventional to renewable sources will call for geotechnical expertise. Consequently, the book explores and analyzes a selection of interesting problems involving the stability and serviceability of supporting structures, and provides new solutions approaches for practitioners and scientists in geotechnical engineering. The content reflects the outcomes of the Colloquium on Geotechnical Engineering 2019 (Geotechnik Kolloquium), held in Karlsruhe, Germany in September 2019.

Download or read book The World Republic of Letters written by Pascale Casanova and published by Harvard University Press. This book was released on 2004 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "world of letters" has always seemed a matter more of metaphor than of global reality. In this book, Pascale Casanova shows us the state of world literature behind the stylistic refinements--a world of letters relatively independent from economic and political realms, and in which language systems, aesthetic orders, and genres struggle for dominance. Rejecting facile talk of globalization, with its suggestion of a happy literary "melting pot," Casanova exposes an emerging regime of inequality in the world of letters, where minor languages and literatures are subject to the invisible but implacable violence of their dominant counterparts. Inspired by the writings of Fernand Braudel and Pierre Bourdieu, this ambitious book develops the first systematic model for understanding the production, circulation, and valuing of literature worldwide. Casanova proposes a baseline from which we might measure the newness and modernity of the world of letters--the literary equivalent of the meridian at Greenwich. She argues for the importance of literary capital and its role in giving value and legitimacy to nations in their incessant struggle for international power. Within her overarching theory, Casanova locates three main periods in the genesis of world literature--Latin, French, and German--and closely examines three towering figures in the world republic of letters--Kafka, Joyce, and Faulkner. Her work provides a rich and surprising view of the political struggles of our modern world--one framed by sites of publication, circulation, translation, and efforts at literary annexation.

Download or read book Quantum Mechanics Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.

Download or read book Treaty Series Recueil Des Traites written by United Nations and published by UN. This book was released on 2007-11-02 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: