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Author: Nabil Zakhama
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
Author: Nabil Zakhama
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Author: Claude Girault
Publisher: Springer Science & Business Media
ISBN: 3662053241
Category : Computers
Languages : en
Pages : 602
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Book Description
Using formal methods for the specification and verification of hardware and software systems is becoming increasingly important as systems increase in size and complexity. The aim of the book is to illustrate progress in formal methods based on Petri net formalisms. It presents both practical and theoretical foundations for the use of Petri nets in complex system engineering tasks. In doing so it bridges the gap between Petri nets and the systems modeling and implementation process. It contains a collection of examples arising from different fields, such as flexible manufacturing, telecommunication and workflow management systems.
Author: François Fouquet
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
La complexité croissante des systèmes d'information modernes a motivé l'apparition de nouveaux paradigmes (objets, composants, services, etc), permettant de mieux appréhender et maîtriser la masse critique de leurs fonctionnalités. Ces systèmes sont construits de façon modulaire et adaptable afin de minimiser les temps d'arrêts dus aux évolutions ou à la maintenance de ceux-ci. Afin de garantir des propriétés non fonctionnelles (par ex. maintien du temps de réponse malgré un nombre croissant de requêtes), ces systèmes sont également amenés à être distribués sur différentes ressources de calcul (grilles). Outre l'apport en puissance de calcul, la distribution peut également intervenir pour distribuer une tâche sur des nœuds aux propriétés spécifiques. C'est le cas dans le cas des terminaux mobiles proches des utilisateurs ou encore des objets et capteurs connectés proches physiquement du contexte de mesure. L'adaptation d'un système et de ses ressources nécessite cependant une connaissance de son état courant afin d'adapter son architecture et sa topologie aux nouveaux besoins. Un nouvel état doit ensuite être propagé à l'ensemble des nœuds de calcul. Le maintien de la cohérence et le partage de cet état est rendu particulièrement difficile à cause des connexions sporadiques inhérentes à la distribution, pouvant amener des sous-systèmes à diverger. En réponse à ces défi scientifiques, cette thèse propose une abstraction de conception et de déploiement pour systèmes distribués dynamiquement adaptables, grâce au principe du Model@Runtime. Cette approche propose la construction d'une couche de réflexion distribuée qui permet la manipulation abstraite de systèmes répartis sur des nœuds hétérogènes. En outre, cette contribution introduit dans la modélisation des systèmes adaptables la notion de cohérence variable, permettant ainsi de capturer la divergence des nœuds de calcul dans leur propre conception. Cette couche de réflexion, désormais cohérente "à terme", permet d'envisager la construction de systèmes adaptatifs hétérogènes, regroupant des nœuds mobiles et embarqués dont la connectivité peut être intermittente. Cette contribution a été concrétisée par un projet nommé ''Kevoree'' dont la validation démontre l'applicabilité de l'approche proposée pour des cas d'usages aussi hétérogènes qu'un réseau de capteurs ou une flotte de terminaux mobiles.
Author: Max Giordano
Publisher: John Wiley & Sons
ISBN: 1118587529
Category : Business & Economics
Languages : en
Pages : 389
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Book Description
This book gives a comprehensive view of the most recent major international research in the field of tolerancing, and is an excellent resource for anyone interested in Computer Aided Tolerating. It is organized into 4 parts. Part 1 focuses on the more general problems of tolerance analysis and synthesis, for tolerancing in mechanical design and manufacturing processes. Part 2 specifically highlights the simulation of assembly with defects, and the influence of tolerances on the quality of the assembly. Part 3 deals with measurement aspects, and quality control throughout the life cycle. Different measurement technologies and methods for estimating uncertainty are considered. In Part 4, different aspects of tolerancing and their interactions are explored, from the definition of functional requirement to measurement processes in a PLM approach.
Author: George Berger
Publisher:
ISBN:
Category : Biography & Autobiography
Languages : en
Pages : 324
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Book Description
In-depth interviews with the main movers in the punk rock movement--Crass members Penny Rimbaud, Gee Vaucher, and Steve Ignorant--detail the face of the revolution founded by these radical thinkers and artists. When punk ruled the waves, Crass waived the rules by putting out their own records, films, and magazines and setting up a series of situationist pranks that were dutifully covered by the world's press. Not just another iconoclastic band, Crass was a musical, social, and political phenomenon: commune dwellers that were rarely photographed and remained contemptuous of conventional pop stardom. As detailed in this history, their members explored and finally exhausted the possibilities of punk-led anarchy. This definitive biography of the band not only gives backstage access to their lives, philosophies, and the movement that followed, but also to never-before-seen photographs and rare dialogues.
Author: Lucille Alice Suchman
Publisher: Cambridge University Press
ISBN: 9780521337397
Category : Computers
Languages : en
Pages : 224
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Book Description
A compelling case for the re-examination of interface design models is presented by this text's assertion that human behavior is not taken into account in the planning model generally favored by artificial intelligence.
Author: Director Edmond J Safra Center for Ethics and Roy L Furman Professorship of Law Lawrence Lessig
Publisher: Createspace Independent Publishing Platform
ISBN: 9781537290904
Category :
Languages : en
Pages : 378
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Book Description
There's a common belief that cyberspace cannot be regulated-that it is, in its very essence, immune from the government's (or anyone else's) control.Code argues that this belief is wrong. It is not in the nature of cyberspace to be unregulable; cyberspace has no "nature." It only has code-the software and hardware that make cyberspace what it is. That code can create a place of freedom-as the original architecture of the Net did-or a place of exquisitely oppressive control.If we miss this point, then we will miss how cyberspace is changing. Under the influence of commerce, cyberpsace is becoming a highly regulable space, where our behavior is much more tightly controlled than in real space.But that's not inevitable either. We can-we must-choose what kind of cyberspace we want and what freedoms we will guarantee. These choices are all about architecture: about what kind of code will govern cyberspace, and who will control it. In this realm, code is the most significant form of law, and it is up to lawyers, policymakers, and especially citizens to decide what values that code embodies.
Author: Nicolas Gillis
Publisher: SIAM
ISBN: 1611976413
Category : Mathematics
Languages : en
Pages : 376
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Book Description
Nonnegative matrix factorization (NMF) in its modern form has become a standard tool in the analysis of high-dimensional data sets. This book provides a comprehensive and up-to-date account of the most important aspects of the NMF problem and is the first to detail its theoretical aspects, including geometric interpretation, nonnegative rank, complexity, and uniqueness. It explains why understanding these theoretical insights is key to using this computational tool effectively and meaningfully. Nonnegative Matrix Factorization is accessible to a wide audience and is ideal for anyone interested in the workings of NMF. It discusses some new results on the nonnegative rank and the identifiability of NMF and makes available MATLAB codes for readers to run the numerical examples presented in the book. Graduate students starting to work on NMF and researchers interested in better understanding the NMF problem and how they can use it will find this book useful. It can be used in advanced undergraduate and graduate-level courses on numerical linear algebra and on advanced topics in numerical linear algebra and requires only a basic knowledge of linear algebra and optimization.
Author: Alain Hébert
Publisher: Presses inter Polytechnique
ISBN: 2553014368
Category : Nuclear physics
Languages : en
Pages : 426
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Book Description
Author: Paul Graham
Publisher: "O'Reilly Media, Inc."
ISBN: 0596006624
Category : Computers
Languages : en
Pages : 272
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Book Description
The author examines issues such as the rightness of web-based applications, the programming language renaissance, spam filtering, the Open Source Movement, Internet startups and more. He also tells important stories about the kinds of people behind technical innovations, revealing their character and their craft.
