Book Description
Ce mémoire de thèse propose une contribution méthodologique à la conception de systèmes magnétiques pour la lévitation magnétique qui repose sur la compensation de la gravité à l'aide d'une force magnétique. Il établit la corrélation existant entre la valeur de la force de lévitation, l'induction, la taille de la zone utile et l'homogénéité du champ de force résiduel. Après un état de l'art et une présentation des applications potentielles de la lévitation magnétique, une méthodologie de résolution de la synthèse de source pour la lévitation magnétique dans le cas des géométries bidimensionnelles invariantes par translation est proposée. Puis, deux structures supraconductrices destinées à la lévitation de l'eau et à celle de cibles de deutérium ont été dimensionnées. Ensuite l'association d'enroulements supraconducteurs et d'inserts ferromagnétiques est abordée. Enfin, le dernier chapitre expose les résultats expérimentaux dans le cas de la lévitation de l'hydrogène liquide.
Book Description
La conception de dispositifs électrotechniques en magnétostatique nécessite généralement la résolution de problèmes inverses de synthèse de source: c'est à dire qu'il faut définir des sources produisant une distribution d'induction ayant des propriétés prescrites. Ce mémoire de thèse présente en premier lieu une méthodologie de résolution du problème inverse de synthèse de source complétant les méthodes usuelles de conception assistée par ordinateur. Cette méthodologie est notamment basée sur une modélisation idéalisée des systèmes (les sources sont modélisées par des densités surfaciques de courant) ainsi que sur l'utilisation d'outils numériques et d'outils théoriques que nous avons développé. La méthodologie présentée est ensuite appliquée à la conception de systèmes destinés au stockage magnétique d'énergie (SMES) et d'autre part des systèmes créant un environnement de micro-gravité. L'établissement de trois critères de comparaison des performances des SMES ainsi qu'une étude taxinomique de différentes structures de SMES envisageables a permis l'identification de configurations de bobinages supraconducteurs innovantes et potentiellement attractives pour le stockage magnétique d'énergie. L'application de la méthodologie présentée à la problématique de la création d'environnement de micro-gravité a permis l'identification de plusieurs systèmes, entièrement supraconducteur ou utilisant des inserts ferromagnétiques supersaturés, présentant d'excellentes performances en terme d'intensité et d'uniformité du gradient de B2. La pertinence d'une structure à inserts ferromagnétiques destinée à la micro-gravité a été vérifiée expérimentalement.
Author: Ahmed Belasri Publisher: Springer Nature ISBN: 9811554447 Category : Technology & Engineering Languages : en Pages : 659
Book Description
This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Author: Matthias Gross Publisher: Routledge ISBN: 1317964675 Category : Business & Economics Languages : en Pages : 427
Book Description
Once treated as the absence of knowledge, ignorance today has become a highly influential topic in its own right, commanding growing attention across the natural and social sciences where a wide range of scholars have begun to explore the social life and political issues involved in the distribution and strategic use of not knowing. The field is growing fast and this handbook reflects this interdisciplinary field of study by drawing contributions from economics, sociology, history, philosophy, cultural studies, anthropology, feminist studies, and related fields in order to serve as a seminal guide to the political, legal and social uses of ignorance in social and political life. Chapter 33 of this book is freely available as a downloadable Open Access PDF under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license available here: https://tandfbis.s3-us-west-2.amazonaws.com/rt-files/docs/Open+Access+Chapters/9780415718967_oachapter33.pdf
Author: David Adler Publisher: Springer Science & Business Media ISBN: 1489922601 Category : Science Languages : en Pages : 448
Book Description
The Institute for Amorphous Studies was founded in 1982 as the international center for the investigation of amorphous mate rials. It has since played an important role in promoting the und er standing of disordered matter in general. An Institute lecture series on "Fundamentals of Amorphous Materials and Devices" was held during 1982-83 with distinguished speakers from universities and industry. These events were free and open to the public ,and were attended by many representatives of the scientific community. The lectures themselves were highly successful inasmuch as they provided not only formal instruction but also an opportunity for vigorous and stimulating debate. That last element could not be captured within the pages of a book I but the lectures concentrated on the latest advances in the field I which is why their essential contents are he re reproduced in collective form. Together they constitute an interdisciplinary status report of the field. The speakers brought many different viewpoints and a variety of back ground experiences io bear on the problems involved I but though language and conventions vary I the essential unity of the concerns is very clear I as indeed are the ultimate benefits of the many-sided approach.
Author: Juan A. Martinez-Velasco Publisher: John Wiley & Sons ISBN: 1119480531 Category : Technology & Engineering Languages : en Pages : 618
Book Description
A hands-on introduction to advanced applications of power system transients with practical examples Transient Analysis of Power Systems: A Practical Approach offers an authoritative guide to the traditional capabilities and the new software and hardware approaches that can be used to carry out transient studies and make possible new and more complex research. The book explores a wide range of topics from an introduction to the subject to a review of the many advanced applications, involving the creation of custom-made models and tools and the application of multicore environments for advanced studies. The authors cover the general aspects of the transient analysis such as modelling guidelines, solution techniques and capabilities of a transient tool. The book also explores the usual application of a transient tool including over-voltages, power quality studies and simulation of power electronics devices. In addition, it contains an introduction to the transient analysis using the ATP. All the studies are supported by practical examples and simulation results. This important book: Summarises modelling guidelines and solution techniques used in transient analysis of power systems Provides a collection of practical examples with a detailed introduction and a discussion of results Includes a collection of case studies that illustrate how a simulation tool can be used for building environments that can be applied to both analysis and design of power systems Offers guidelines for building custom-made models and libraries of modules, supported by some practical examples Facilitates application of a transients tool to fields hardly covered with other time-domain simulation tools Includes a companion website with data (input) files of examples presented, case studies and power point presentations used to support cases studies Written for EMTP users, electrical engineers, Transient Analysis of Power Systems is a hands-on and practical guide to advanced applications of power system transients that includes a range of practical examples.
Author: Catherine Barnard Publisher: Bloomsbury Publishing ISBN: 184731869X Category : Law Languages : en Pages : 337
Book Description
The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.
Author: Andrea Bianchi Publisher: Hart Publishing ISBN: 9781849461375 Category : Law Languages : en Pages : 407
Book Description
This book carefully and thoroughly analyses the legal questions raised by the phenomenon of terrorism, and past and recent efforts to fight it, from the perspective of international humanitarian law (IHL). The objective is to substantially contribute to a better understanding of the issues surrounding the content and applicability of IHL as it applies to terrorism as well as to analyse and contextualise the current debates on these controversial and critically important questions. While due heed is paid to doctrinal debates, particular emphasis is placed on the practice of social actors, particularly, although not exclusively, States. The analysis of their actual conduct as well as their expectations about the interpretation and application of the law is crucial to establishing an interpretive consensus on when and how IHL is relevant to regulate acts of terrorism. The approach of the book is analytical and discursive, rather than prescriptive. Thus the reader will find the relevant rules of IHL and other legal regimes as regards terrorism, but also the debates over their application, the contradictions in State practice and the impact these may have upon IHL's evolution and implementation. The aim is to provide legal practitioners, as well as those in military, political and academic circles, with a useful reference point. Hopefully the book will also prove useful to other readers who will find its content and easy-to-read style an encouragement to getting acquainted with a topical subject, traditionally thought to be reserved for legal specialists. This book was cited with approval by the US Court of Appeals in Salim Ahmed Hamdan v United States of America, 16th October 2012
Author: Lionel Quettier
Author: Olivier Vincent-Viry
Author: Ahmed Belasri
Author: Matthias Gross
Author: David Adler
Author: Paul James
Author: Juan A. Martinez-Velasco
Author: Catherine Barnard
Author: Andrea Bianchi
Author: Universidade de Coimbra