Download or read book De l introduction d elements fonctionnels au sein de la theorie des bond graphs written by Laurent Lefèvre (chercheur en automatique).) and published by . This book was released on 1999 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce rapport détaille la problématique du couplage entre modèles de dimension infinie (ou à paramètres distribués) et modèles de dimension finie (ou à paramètres localisés). Dans les deux cas, les modèles étudiés sont fondés sur l'analyse des processus de stockage, de dissipation et de transfert d'énergie. Les modèles à paramètres localisés considérés sont des bond graphs. Le premier chapitre s'attache à décrire de manière formelle le processus de modélisation récursive. Cette approche montre qu'aucune hypothèse physique ne s'oppose formellement à la généralisation des éléments constitutifs des bond graphs. Les éléments ainsi généralisés sont définis par des opérateurs liant les efforts et les flux à leurs accès et sont baptisés éléments fonctionnels. De nombreux exemples d'éléments fonctionnels sont passés en revue afin d'illustrer l'intérêt de la problématique de couplage. Le deuxième chapitre aborde le problème de la réduction d'opérateurs linéaires de dimension infinie à des systèmes de dimension finie réalisés par bond graph. La méthode développée fait usage des approximants de Padé pour la réduction proprement dite, puis des propriétés des séries de Stieltjes pour établir le caractère physiquement admissible de leur réalisation. Cette méthode s'applique aux opérateurs de relaxation (et donc notamment à des modèles d'impédance hydraulique fractale pour lesquels elle est étudiée en détail). Le troisième chapitre s'attaque au problème de la généralisation de la notion de passivité aux systèmes linéaires de dimension infinie. La caractérisation de cette propriété, comme dans le cas de dimension finie, conduit à la notion de fonction de transfert positive réelle, et définit ainsi la plus large famille de système linéaire pour lesquels les méthodes de réduction similaire à celle du chapitre 2 peuvent avoir un sens. Enfin, en annexe 2, sont développés quelques résultats préliminaires concernant la réduction d'opérateurs non linéaires à mémoire évanescente. Ceux-ci ouvrent la voie à la généralisation ultérieure de ce travail aux éléments fonctionnels non linéaires.

Download or read book An Introduction to Bond Graph Modeling with Applications written by J. A. Tenreiro Machado and published by CRC Press. This book was released on 2021-06-18 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Bond Graph Modeling with Applications presents a collection of exercises on dynamical systems, modeling and control for university students in the areas of engineering, physics and applied mathematics. We can find several books on bond graphs, but most merely a small set of exercises and, in a few cases, some commands for computer packages like MATLAB or Mathematica. It is difficult to find books with a broad set of solved exercises and proposed exercises with solutions, guiding researchers starting their work with bond graphs, or students who are just beginning their study of the topic. This book aims to fill that gap, and provide a comprehensive, reader-friendly introduction to the Bond Graph modeling tool. Features Gives in-depth theoretical background coupled with practical, hands-on instructions. Provides a clear pedagogical framework, with numerous exercises and problems. Suitable for students and researchers who work with bond graphs: principally such as applied mathematicians, physicist and engineers.

Download or read book De l introduction d l ments fonctionnels au sein de la th orie des bond graphs written by Laurent Lefèvre (professeur en mathématiques appliquées).) and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce rapport détaille la problématique du couplage entre modèles de dimension infinie (ou à paramètres distribués) et modèles de dimension finie (ou à paramètres localisés). Dans les deux cas, les modèles étudiés sont fondés sur l'analyse des processus de stockage, de dissipation et de transfert d'énergie. Les modèles à paramètres localisés considérés sont des bond graphs. Le premier chapitre s'attache à décrire de manière formelle le processus de modélisation récursive. Cette approche montre qu'aucune hypothèse physique ne s'oppose formellement à la généralisation des éléments constitutifs des bond graphs. Les éléments ainsi généralisés sont définis par des opérateurs liant les efforts et les flux à leurs accès et sont baptisés éléments fonctionnels. De nombreux exemples d'éléments fonctionnels sont passés en revue afin d'illustrer l'intérêt de la problématique de couplage. Le deuxième chapitre aborde le problème de la réduction d'opérateurs linéaires de dimension infinie à des systèmes de dimension finie réalisés par bond graph. La méthode développée fait usage des approximants de Padé pour la réduction proprement dite, puis des propriétés des séries de Stieltjes pour établir le caractère physiquement admissible de leur réalisation. Cette méthode s'applique aux opérateurs de relaxation (et donc notamment à des modèles d'impédance hydraulique fractale pour lesquels elle est étudiée en détail). Le troisième chapitre s'attaque au problème de la généralisation de la notion de passivité aux systèmes linéaires de dimension infinie. La caractérisation de cette propriété, comme dans le cas de dimension finie, conduit à la notion de fonction de transfert positive réelle, et définit ainsi la plus large famille de système linéaire pour lesquels les méthodes de réduction similaire à celle du chapitre 2 peuvent avoir un sens. Enfin, en annexe 2, sont développés quelques résultats préliminaires concernant la réduction d'opérateurs non linéaires à mémoire évanescente. Ceux-ci ouvrent la voie à la généralisation ultérieure de ce travail aux éléments fonctionnels non linéaires.

Download or read book Bond Graph Methodology written by Wolfgang Borutzky and published by Springer. This book was released on 2014-11-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, engineering systems are of ever-increasing complexity and must be c- sidered asmultidisciplinary systems composed of interacting subsystems or system components from different engineering disciplines. Thus, an integration of various engineering disciplines, e.g, mechanical, electrical and control engineering in ac- current design approach is required. With regard to the systematic development and analysis of system models,interdisciplinary computer aided methodologies are - coming more and more important. A graphical description formalism particularly suited for multidisciplinary s- tems arebondgraphs devised by Professor Henry Paynter in as early as 1959 at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts, USA and in use since then all over the world. This monograph is devoted exclusively to the bond graph methodology. It gives a comprehensive, in-depth, state-of-the-art presentation including recent results sc- tered over research articles and dissertations and research contributions by the - thor to a number of topics. The book systematically covers the fundamentals of developing bond graphs and deriving mathematical models from them, the recent developments in meth- ology, symbolic and numerical processing of mathematical models derived from bond graphs. Additionally it discusses modern modelling languages, the paradigm of object-oriented modelling, modern software that can be used for building and for processing of bond graph models, and provides a chapter with small case studies illustrating various applications of the methodology.

Download or read book Collection of Essays by Legal Advisers of States Legal Advisers of International Organizations and Practitioners in the Field of International Law written by United Nations. Office of Legal Affairs and published by United Nations Publications. This book was released on 1999 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world has changed radically since 1989, when the General Assembly declared the period from 1990 to 1999 as the United Nations Decade of International Law. During that time, the international community claimed some major achievements as reflected by the adoption of conventions and treaties. This publication presents a collection of essays from legal advisers of States and international organizations, all of whom are among those committed to promoting respect for international law. Their contribution provides a practical perspective on international law, viewed from the standpoint of those involved in its formation, application and administration.

Download or read book Modelling in Aquatic Chemistry written by OECD Nuclear Energy Agency and published by Nuclear Energy Agency. This book was released on 1997 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Concept and the Role of the Model in Mathematics and Natural and Social Sciences written by Hans Freudenthal and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Colloquium sponsored by the Division of Philosophy of Sciences of the International Union of History and Philosophy of Sciences organized at Utrecht, January 1960.

Download or read book The Technological and Economic Future of Nuclear Power written by Reinhard Haas and published by Springer. This book was released on 2019-01-01 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book discusses the eroding economics of nuclear power for electricity generation as well as technical, legal, and political acceptance issues. The use of nuclear power for electricity generation is still a heavily disputed issue. Aside from technical risks, safety issues, and the unsolved problem of nuclear waste disposal, the economic performance is currently a major barrier. In recent years, the costs have skyrocketed especially in the European countries and North America. At the same time, the costs of alternatives such as photovoltaics and wind power have significantly decreased. Contents History and Current Status of the World Nuclear Industry The Dramatic Decrease of the Economics of Nuclear Power Nuclear Policy in the EU The Legacy of Csernobyl and Fukushima Nuclear Waste and Decommissioning of Nuclear Power Plants Alternatives: Heading Towards Sustainable Electricity Systems Target Groups Researchers and students in the fields of political, economic and technical sciences Energy (policy) experts, nuclear energy experts and practitioners, economists, engineers, consultants, civil society organizations The Editors Prof. Dr. Reinhard Haas is University Professor of energy economics at the Institute of Energy Systems and Electric Drives at Technische Universität Wien, Austria. PD Dr. Lutz Mez is Associate Professor at the Department for Political and Social Sciences of Freie Universität Berlin, Germany. PD Dr. Amela Ajanovic is a senior researcher and lecturer at the Institute of Energy Systems and Electrical Drives at Technische Universität Wien, Austria.--

Download or read book Physics on Manifolds written by M. Flato and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the Colloquium "Analysis, Manifolds and Physics" organized in honour of Yvonne Choquet-Bruhat by her friends, collaborators and former students, on June 3, 4 and 5, 1992 in Paris. Its title accurately reflects the domains to which Yvonne Choquet-Bruhat has made essential contributions. Since the rise of General Relativity, the geometry of Manifolds has become a non-trivial part of space-time physics. At the same time, Functional Analysis has been of enormous importance in Quantum Mechanics, and Quantum Field Theory. Its role becomes decisive when one considers the global behaviour of solutions of differential systems on manifolds. In this sense, General Relativity is an exceptional theory in which the solutions of a highly non-linear system of partial differential equations define by themselves the very manifold on which they are supposed to exist. This is why a solution of Einstein's equations cannot be physically interpreted before its global behaviour is known, taking into account the entire hypothetical underlying manifold. In her youth, Yvonne Choquet-Bruhat contributed in a spectacular way to this domain stretching between physics and mathematics, when she gave the proof of the existence of solutions to Einstein's equations on differential manifolds of a quite general type. The methods she created have been worked out by the French school of mathematics, principally by Jean Leray. Her first proof of the local existence and uniqueness of solutions of Einstein's equations inspired Jean Leray's theory of general hyperbolic systems.

Download or read book Italian Mathematics Between the Two World Wars written by Angelo Guerraggio and published by Springer Science & Business Media. This book was released on 2006-01-20 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes Italian mathematics in the period between the two World Wars. It analyzes the development by focusing on both the interior and the external influences. Italian mathematics in that period was shaped by a colorful array of strong personalities who concentrated their efforts on a select number of fields and won international recognition and respect in an incredibly short time. Consequently, Italy was considered a third mathematical power after France and Germany.

Download or read book Functional Integration written by Cécile Dewitt-Morette and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The program of the Institute covered several aspects of functional integration -from a robust mathematical foundation to many applications, heuristic and rigorous, in mathematics, physics, and chemistry. It included analytic and numerical computational techniques. One of the goals was to encourage cross-fertilization between these various aspects and disciplines. The first week was focused on quantum and classical systems with a finite number of degrees of freedom; the second week on field theories. During the first week the basic course, given by P. Cartier, was a presentation of a recent rigorous approach to functional integration which does not resort to discretization, nor to analytic continuation. It provides a definition of functional integrals simpler and more powerful than the original ones. Could this approach accommodate the works presented by the other lecturers? Although much remains to be done before answering "Yes," there seems to be no major obstacle along the road. The other courses taught during the first week presented: a) a solid introduction to functional numerical techniques (A. Sokal) and their applications to functional integrals encountered in chemistry (N. Makri). b) integrals based on Poisson processes and their applications to wave propagation (S. K. Foong), in particular a wave-restorer or wave-designer algorithm yielding the initial wave profile when one can only observe its distortion through a dissipative medium. c) the formulation of a quantum equivalence principle (H. Kleinert) which. given the flat space theory, yields a well-defined quantum theory in spaces with curvature and torsion.

Download or read book Lithic Technological Organization and Paleoenvironmental Change written by Erick Robinson and published by Springer. This book was released on 2017-11-06 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this edited volume is to bring together a diverse set of analyses to document how small-scale societies responded to paleoenvironmental change based on the evidence of their lithic technologies. The contributions bring together an international forum for interpreting changes in technological organization - embracing a wide range of time periods, geographic regions and methodological approaches.​ ​As technology brings more refined information on ancient climates, the research on spatial and temporal variability of paleoenvironmental changes. In turn, this has also broadened considerations of the many ways that prehistoric hunter-gatherers may have responded to fluctuations in resource bases. From an archaeological perspective, stone tools and their associated debitage provide clues to understanding these past choices and decisions, and help to further the investigation into how variable human responses may have been. Despite significant advances in the theory and methodology of lithic technological analysis, there have been few attempts to link these developments to paleoenvironmental research on a global scale.

Download or read book Conservation Regeneration the Modernist Neighbourhood written by and published by . This book was released on 2012 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Modeling of Mechanical Systems III written by Mohamed Haddar and published by Springer. This book was released on 2017-11-25 with total page 1225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of original peer-reviewed contributions presented at the 7th International Congress on Design and Modeling of Mechanical Systems (CMSM’2017), held in Hammamet, Tunisia, from the 27th to the 29th of March 2017. It reports on both research findings, innovative industrial applications and case studies concerning mechanical systems and related to modeling and analysis of materials and structures, multiphysics methods, nonlinear dynamics, fluid structure interaction and vibroacoustics, design and manufacturing engineering. Continuing on the tradition of the previous editions, this proceedings offers a broad overview on the state-of-the art in the field and a useful resource for academic and industry specialists active in the field of design and modeling of mechanical systems. CMSM’2017 was jointly organized by two leading Tunisian research laboratories: the Mechanical, Modeling and Manufacturing Laboratory of the National Engineering School of Sfax and the Mechanical Engineering Laboratory of the National Engineering School of Monastir..

Download or read book The Supporting Roots of Trees and Woody Plants Form Function and Physiology written by A. Stokes and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the proceedings of the first International Conference devoted to the structural roots of trees and woody plants. 'The Supporting Roots - Structure and Function,' 20-24 July 1998, Bordeaux, France. The meeting was held under the auspices ofIUFRO WPS 2. 01. 13 'Root Physiology and Symbiosis,' and its aim was to bring together scientific researchers, foresters and arboriculturalists, to discuss current problems in structural root research and disseminate knowledge to an audience from a wide disciplinary background. For the first time in an international conference, emphasis was placed on presenting recent reseach in the field of tree anchorage mechanics and root biomechanics. The way in which tree stability can be affected by root system symmetry and architecture was addressed, as well as how movement during wind sway can influence the development and shape of woody roots. The role of different nursery and planting techniques was discussed, in relation to effects on root system form and development. Root response to different environmental stresses, including water, temperature, nutrient and mechanical stress was addressed in detail. The structure and function of woody roots was also considered at different levels, from coarse to fine roots, with several papers discussing the interaction between roots and the rhizosphere. One of the conference highlights was the presentation of new methods in root research, by a series of workshops held at LRBB-INRA, Pierroton, on the northern border of the Gascony forest.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Why International Organizations Hate Politics written by Marieke Louis and published by Routledge. This book was released on 2021-04-05 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the concept of depoliticization, this book provides a first systematic analysis of International Organizations (IO) apolitical claims. It shows that depoliticization sustains IO everyday activities while allowing them to remain engaged in politics, even when they pretend not to. Delving into the inner dynamics of global governance, this book develops an analytical framework on why IOs "hate" politics by bringing together practices and logics of depoliticization in a wide variety of historical, geographic and organizational contexts. With multiple case studies in the fields of labor rights and economic regulation, environmental protection, development and humanitarian aid, peacekeeping, among others this book shows that depoliticization is enacted in a series of overlapping, sometimes mundane, practices resulting from the complex interaction between professional habits, organizational cultures and individual tactics. By approaching the consequences of these practices in terms of logics, the book addresses the instrumental dimension of depoliticization without assuming that IO actors necessarily intend to depoliticize their action or global problems. For IO scholars and students, this book sheds new light on IO politics by clarifying one often taken-for-granted dimension of their everyday activities, precisely that of depoliticization. It will also be of interest to other researchers working in the fields of political science, international relations, international political sociology, international political economy, international public administration, history, law, sociology, anthropology and geography as well as IO practitioners.