Author:
Publisher:
ISBN:
Category : Science
Languages : fr
Pages : 140

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Author: Michel Lambert (ingénieur).)
Publisher:
ISBN: 9782100775873
Category :
Languages : fr
Pages : 248

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L'essentiel des anomalies rencontrées sur un réseau a pour origine un déséquilibre homopolaire. Le comportement du système électrique et la maîtrise des contraintes sont alors déterminés par le mode de fixation du neutre avec la terre. Le choix d'un régime de neutre est le résultat d'un compromis entre des impératifs dont les critères d'appréciation relèvent de la qualité de service, de la préservation des biens, de la sécurité des personnes et de la maîtrise des coûts.Cette 2e édition est issue de l'expérience professionnelle de l'auteur. C'est un outil d'analyse permettant de réaliser l'inventaire des dispositions qui doivent être prises en cohérence avec le choix du régime de neutre. Elle s'adresse aux exploitants et aux concepteurs des réseaux d'énergie électrique, qu'ils soient ingénieurs ou techniciens. Elle sera également utile aux formateurs et à tous ceux qui veulent maintenir leurs connaissances à jour.La première partie définit : Les déséquilibres homopolaires.Les régimes de neutre et les schémas des liaisons à la terre.Les critères de choix d'un régime de neutre.La deuxième partie présente les dispositions associées :Les dispositifs de mise à la terre d'un neutre.Les plans de protection.L'exploitation.

Author: Michel Lambert
Publisher: Dunod
ISBN: 2100775901
Category : Technology & Engineering
Languages : fr
Pages : 250

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Book Description
Dans la conception et dans l’exploitation de tout réseau électrique, le mode de fixation du neutre à la terre est une question importante, et les solutions choisies peuvent évoluer en même temps que le réseau évolue. Cette 2e édition est à la fois un outil d’analyse et de travail pour réaliser l’inventaire des dispositions qui doivent être prises en cohérence avec le choix du régime de neutre. La première partie définit : Les déséquilibres homopolaires. Les régimes de neutre et les schémas des liaisons à la terre. Les critères de choix d’un régime de neutre. La deuxième partie présente les dispositions associées : Les dispositifs de mise à la terre d’un neutre. Les plans de protection. L’exploitation.

Author: Michel Lambert
Publisher:
ISBN: 9782100864393
Category :
Languages : fr
Pages : 0

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Author: Geneviève Zarate
Publisher: Archives contemporaines
ISBN: 2813000396
Category : Language and culture
Languages : en
Pages : 431

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Book Description
Built around the concept of linguistic and cultural plurality, this book defines language as an instrument of action and symbolic power. Plurality is conceived here as : a complex array of voices, perspectives and approaches that seeks to preserve the complexity of the multilingual and multicultural enterprise, including language learning and teaching ; a coherent system of relationships among various languages, research traditions and research sites that informs qualitative methods of inquiry into multilingualism and its uses in everyday life ; a view of language as structured sociohistorical object, observable from several simultaneous spatiotemporal standpoints, such as that of daily interactions or that which sustains the symbolic power of institutions. This book is addressed to teacher trainers, young researchers, decision makers, teachers concerned with the role of languages in the evolution of societies and educational systems. It aims to elicit discussion by articulating practices, field observations and analyses based on a multidisciplinary conceptual framework.

Author: Jacques Lafontaine
Publisher: Springer
ISBN: 3319207350
Category : Mathematics
Languages : en
Pages : 408

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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: Άγγελος Χανιώτης
Publisher: Franz Steiner Verlag
ISBN: 9783515081979
Category : History
Languages : en
Pages : 218

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Book Description
Papers from a round table held Aug. 9, 2000, in Oslo.

Author: P. M. Banks
Publisher: Elsevier
ISBN: 1483260666
Category : Science
Languages : en
Pages : 445

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Book Description
Aeronomy, Part A is an attempt to make a comprehensive exposition of the processes in aeronomy, the study of composition, movement, and thermal balance of the upper regions of the planetary atmosphere. The text covers topics such as atmospheric regions and atmospheric density, the temperature and molecular mass of the atmosphere; the permanent constituents and the molecular and isotonic composition of the homosphere; and the transition from the homosphere to the heterosphere. Also covered are topics such as the temperature gradient and energies in the thermosphere, conditions at 200km and above 250km, solar radiation and ionization, and aeronomic reactions. The book is recommended for scientists, especially natural physicists, who would like to know more about the field of aeronomy and its advances.

Author: Institution of Electrical Engineers
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 80

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Book Description
A guide to electrical isolation and switching. It is part of a series of manuals designed to amplify the particular requirements of a part of the 16th Edition Wiring Regulations. Each of the guides is extensively cross-referenced to the Regulations thus providing easy access. Some Guidance Notes contain information not included in the 16th Edition but which was included in earlier editions of the IEE Wiring Regulations. All the guides have been updated to align with BS 7671:2001.

Author: Philip Alston
Publisher: Oxford University Press, USA
ISBN:
Category : Business & Economics
Languages : en
Pages : 272

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Book Description
Are efforts to protect workers' rights compatible with the forces of globalization? How can minimum standards designed to protect labor rights be implemented in a world in which national labor law is more and more at the mercy of international forces beyond its control? The contributors to this volume argue that international agreements and institutions are of central importance if labor rights are to be protected in a globalized economy, exploring some of the options that are open to governments, civil society, and the labor movement in the years ahead.