Download or read book Diagrammes de d cision de donn es pour la v rification de syst mes mat riels written by Vincent Beaudenon and published by . This book was released on 2006 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Avec la complexité croissante des systèmes informatiques se pose la question de la mise en oeuvre de méthodes automatiques pour leur vérification formelle. Parmi ces méthodes, le model-checking se fonde sur l'exploration exhaustive du comportement d'un système. Plus celui-ci sera complexe, plus cette exploration se traduira par une explosion combinatoire de l'espace des états du système. Diverses approches ont été proposées pour résoudre ce problème, notamment les méthodes symboliques qui sont bases sur une représentation compacte d'ensembles d'états. Depuis les travaux de R.E. Bryant et la définition des Diagrammes de Décision Binaires (BDD), de nombreuses représentations en DAG d'espaces d'états ont vu le jour, parmi celles-ci, on trouve les Diagrammes de Décision de Données (DDD), qui procurent une représentation compacte d'ensemble d'états et sont pourvus de mécanismes de parcours définis localement pour la réalisation des modifications sur ces états et des opérations ensemblistes. Parallélement, les travaux de G.J. Holzmann ont abouti à la création de l'outil de vérification SPIN, basé sur des méthodes énumératives explicites, pour des systèmes décrits en langage Promela. Ces systèmes sont proches de ceux qui sont utilisés pour la synthèse de haut niveau. Nous proposons une approche de vérification symbolique de systèmes matériels décrits dans un sous-ensemble du langage Promela. La représentation symbolique d'ensembles d'états est basée sur les Diagrammes de Décision de Données qui évitent de d'écrire le système au niveau booléen. Nous présentons d'abord la sémantique du langage Promela ainsi que les DDD puis les mécanismes mis en oeuvre pour la vérification de propriétés de logique CTL. Les conclusions tirées de cette première étape conduisent à proposer l'utilisation des Diagrammes de Décision d'Ensembles (SDD) pour améliorer les performances de la vérification automatique. Nous montrons que, bien que pourvus d'une implémentation et d'une terminologie différentes, il se prévalent du même formalisme que les DDD tout en procurant un étiquetage symbolique des arcs de la structure. Nous expérimentons ensuite cette approche sur des systèmes académiques et sur des systèmes issus d'applications industrielles. Ces expérimentations corroborent nos premiers résultats : les SDD couplés aux méthodes de saturation constituent une alternative sérieuse pour la vérification de systèmes à fort degré de concurrence. Nous proposons des perspectives de recherche pour améliorer encore la vérification de tels systèmes mais également pour introduire le concept de hiérarchie dans la description du système

Download or read book In the Bubble written by John Thackara and published by MIT Press. This book was released on 2006-02-17 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: How to design a world in which we rely less on stuff, and more on people. We're filling up the world with technology and devices, but we've lost sight of an important question: What is this stuff for? What value does it add to our lives? So asks author John Thackara in his new book, In the Bubble: Designing for a Complex World. These are tough questions for the pushers of technology to answer. Our economic system is centered on technology, so it would be no small matter if "tech" ceased to be an end-in-itself in our daily lives. Technology is not going to go away, but the time to discuss the end it will serve is before we deploy it, not after. We need to ask what purpose will be served by the broadband communications, smart materials, wearable computing, and connected appliances that we're unleashing upon the world. We need to ask what impact all this stuff will have on our daily lives. Who will look after it, and how? In the Bubble is about a world based less on stuff and more on people. Thackara describes a transformation that is taking place now—not in a remote science fiction future; it's not about, as he puts it, "the schlock of the new" but about radical innovation already emerging in daily life. We are regaining respect for what people can do that technology can't. In the Bubble describes services designed to help people carry out daily activities in new ways. Many of these services involve technology—ranging from body implants to wide-bodied jets. But objects and systems play a supporting role in a people-centered world. The design focus is on services, not things. And new principles—above all, lightness—inform the way these services are designed and used. At the heart of In the Bubble is a belief, informed by a wealth of real-world examples, that ethics and responsibility can inform design decisions without impeding social and technical innovation.

Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.

Download or read book Clifford Algebras and Their Applications in Mathematical Physics written by J.S.R. Chisholm and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: William Kingdon Clifford published the paper defining his "geometric algebras" in 1878, the year before his death. Clifford algebra is a generalisation to n-dimensional space of quaternions, which Hamilton used to represent scalars and vectors in real three-space: it is also a development of Grassmann's algebra, incorporating in the fundamental relations inner products defined in terms of the metric of the space. It is a strange fact that the Gibbs Heaviside vector techniques came to dominate in scientific and technical literature, while quaternions and Clifford algebras, the true associative algebras of inner-product spaces, were regarded for nearly a century simply as interesting mathematical curiosities. During this period, Pauli, Dirac and Majorana used the algebras which bear their names to describe properties of elementary particles, their spin in particular. It seems likely that none of these eminent mathematical physicists realised that they were using Clifford algebras. A few research workers such as Fueter realised the power of this algebraic scheme, but the subject only began to be appreciated more widely after the publication of Chevalley's book, 'The Algebraic Theory of Spinors' in 1954, and of Marcel Riesz' Maryland Lectures in 1959. Some of the contributors to this volume, Georges Deschamps, Erik Folke Bolinder, Albert Crumeyrolle and David Hestenes were working in this field around that time, and in their turn have persuaded others of the importance of the subject.

Download or read book Space Systems as Contributors to the NATO Defence Mission written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Mission Systems Panel. Symposium and published by . This book was released on 1997 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subcritical Assemblies written by W. Maurice Pritchard and published by . This book was released on 1963 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Basic Technics in Ecological Farming Techniques de Base en Agriculture Biologique Grunds tzliche Verfahren der kologischen Landwirtschaft Le Maintien de la Fertilit des Sols The Maintenance of Soil Fertility Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Esprits modernes written by Vlad Alexandrescu and published by Vlad Alexandrescu. This book was released on 2003 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Best of the Grapevine written by and published by . This book was released on 1985 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Toyota Way Fieldbook written by Jeffrey K. Liker and published by McGraw Hill Professional. This book was released on 2005-10-19 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Toyota Way Fieldbook is a companion to the international bestseller The Toyota Way. The Toyota Way Fieldbook builds on the philosophical aspects of Toyota's operating systems by detailing the concepts and providing practical examples for application that leaders need to bring Toyota's success-proven practices to life in any organization. The Toyota Way Fieldbook will help other companies learn from Toyota and develop systems that fit their unique cultures. The book begins with a review of the principles of the Toyota Way through the 4Ps model-Philosophy, Processes, People and Partners, and Problem Solving. Readers looking to learn from Toyota's lean systems will be provided with the inside knowledge they need to Define the companies purpose and develop a long-term philosophy Create value streams with connected flow, standardized work, and level production Build a culture to stop and fix problems Develop leaders who promote and support the system Find and develop exceptional people and partners Learn the meaning of true root cause problem solving Lead the change process and transform the total enterprise The depth of detail provided draws on the authors combined experience of coaching and supporting companies in lean transformation. Toyota experts at the Georgetown, Kentucky plant, formally trained David Meier in TPS. Combined with Jeff Liker's extensive study of Toyota and his insightful knowledge the authors have developed unique models and ideas to explain the true philosophies and principles of the Toyota Production System.

Download or read book Organic Solid State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.

Download or read book Tomorrow Now written by Bruce Sterling and published by Random House Trade Paperbacks. This book was released on 2003 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predicting that the next generation will be living in a substantially different world, a forecast for the next fifty years discusses such topics as technology, health, law enforcement, and politics, and has been updated to include an all-new afterword. Reprint. 15,000 first printing.

Download or read book Clifford Algebras and Spinors written by Pertti Lounesto and published by Cambridge University Press. This book was released on 2001-05-03 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second edition of a popular work offering a unique introduction to Clifford algebras and spinors. The beginning chapters could be read by undergraduates; vectors, complex numbers and quaternions are introduced with an eye on Clifford algebras. The next chapters will also interest physicists, and include treatments of the quantum mechanics of the electron, electromagnetism and special relativity with a flavour of Clifford algebras. This edition has three new chapters, including material on conformal invariance and a history of Clifford algebras.

Download or read book Population and Development Strategies written by United Nations Population Fund and published by . This book was released on 1994 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Last Billion Years written by Atlantic Geoscience Society and published by Nimbus Publishing (CN). This book was released on 2001 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the history of the rocks and fossils of the Maritime Provinces of Canada (New Brunswick, Nova Scotia and PEI) over the last billion years. The book is beautifully illustrated in full colour, with original paintings of ancient vistas, over 150 photographs, and crisp explanatory diagrams and sketches.

Download or read book Creating Futures written by Michel Godet and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Frequency and Time written by P. Kartaschoff and published by . This book was released on 1978 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: