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Modelisation Au Niveau Systeme Des Entrees Sorties Dun Systeme Heterogene
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Book Synopsis Modélisation hétérogène non-hiérarchique by : Mokhoo Mbobi
Download or read book Modélisation hétérogène non-hiérarchique written by Mokhoo Mbobi and published by . This book was released on 2004 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Embedded systems are naturally heterogeneous. Currently, modeling tools used for modeling embedded systems use a hierarchical approach. This approach although avoiding the combinatorial explosion of the number of interfaces between models of Computation (MoCs) forces the change of hierarchical level when passing from one MoC to another. But, this coupling between hierarchy and model changing perturbs the structure of the model, affects the modularity and makes difficult the maintainability of the model. Moreover this coupling is harmfull to the reuse of the component.This thesis proposes a new approach that dissociates the MoC from this hierarchy. This approach uses two components : a "Heterogeneous Interface Components (HIC) " and a "Non-Hierarchical Heterogeneous Execution Model". A HIC have inputs and outputs of different nature to allow the heterogeneous communication in a system. The Execution Model reorganizes the system by partitionning, i.e. by creating homogenous subsystems at the border of the heterogeneous behavior. It schedules the activation of those subsystems and delegates their internal scheduling to their regular MoC. Finally it executes the system. This approach presents several advantages : the use of several components that use heterogeneous inputs or outputs at the same level of the hierarchy.The separation of control flow and data flow increases the reuse of the components.The explicit specification of the heterogeneous behavior of the system at the boundary between different MoCs as an integral part of the system, contributes efficiently to the modularity and the maintainability of the models.
Book Synopsis Méthode de modélisation et de raffinement pour les systèmes hétérogènes. Illustration avec le langage System C-AMS by : Franck Paugnat
Download or read book Méthode de modélisation et de raffinement pour les systèmes hétérogènes. Illustration avec le langage System C-AMS written by Franck Paugnat and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les systèmes sur puces intègrent aujourd'hui sur le même substrat des parties analogiques et des unités de traitement numérique. Tandis que la complexité de ces systèmes s'accroissait, leur temps de mise sur le marché se réduisait. Une conception descendante globale et coordonnée du système est devenue indispensable de façon à tenir compte des interactions entre les parties analogiques et les partis numériques dès le début du développement. Dans le but de répondre à ce besoin, cette thèse expose un processus de raffinement progressif et méthodique des parties analogiques, comparable à ce qui existe pour le raffinement des parties numériques. L'attention a été plus particulièrement portée sur la définition des niveaux analogiques les plus abstraits et à la mise en correspondance des niveaux d'abstraction entre parties analogiques et numériques. La cohérence du raffinement analogique exige de détecter le niveau d'abstraction à partir duquel l'utilisation d'un modèle trop idéalisé conduit à des comportements irréalistes et par conséquent d'identifier l'étape du raffinement à partir de laquelle les limitations et les non linéarités aux conséquences les plus fortes sur le comportement doivent être introduites. Cette étape peut être d'un niveau d'abstraction élevé. Le choix du style de modélisation le mieux adapté à chaque niveau d'abstraction est crucial pour atteindre le meilleur compromis entre vitesse de simulation et précision. Les styles de modélisations possibles à chaque niveau ont été examinés de façon à évaluer leur impact sur la simulation. Les différents modèles de calcul de SystemC-AMS ont été catégorisés dans cet objectif. Les temps de simulation obtenus avec SystemC-AMS ont été comparés avec Matlab Simulink. L'interface entre les modèles issus de l'exploration d'architecture, encore assez abstraits, et les modèles plus fin requis pour l'implémentation, est une question qui reste entière. Une bibliothèque de composants électroniques complexes décrits en SystemC-AMS avec le modèle de calcul le plus précis (modélisation ELN) pourrait être une voie pour réussir une telle interface. Afin d'illustrer ce que pourrait être un élément d'une telle bibliothèque et ainsi démontrer la faisabilité du concept, un modèle d'amplificateur opérationnel a été élaboré de façon à être suffisamment détaillé pour prendre en compte la saturation de la tension de sortie et la vitesse de balayage finie, tout en gardant un niveau d'abstraction suffisamment élevé pour rester indépendant de toute hypothèse sur la structure interne de l'amplificateur ou la technologie à employer.
Book Synopsis Isotopes in Water Resources Management by : International Atomic Energy Agency
Download or read book Isotopes in Water Resources Management written by International Atomic Energy Agency and published by . This book was released on 1996 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a symposium organized in co-operation with UNESCO and held in Vienna, 20-24 March 1995. The main topics addressed were water resources management, with emphasis on origin and recharge of groundwater, groundwater dynamics and pollution, modelling approaches and geothermal and palaeowater resources. The remaining discussions were concerned with surface water and sediments, unsaturated zones and methodological aspects. The proceedings contain the papers of 43 oral presentations and the extended synopses of over 100 poster presentations.
Book Synopsis Canadian Journal of Earth Sciences by :
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 2001-07 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CJChE written by and published by . This book was released on 2005-08 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis System Architecture and Complexity by : Jacques Printz
Download or read book System Architecture and Complexity written by Jacques Printz and published by John Wiley & Sons. This book was released on 2020-07-16 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emergence of a true systemic science - the systemic one - capable of rigorously addressing the many problems posed by the design and management of the evolution of modern complex systems is therefore urgently needed if wants to be able to provide satisfactory answers to the many profoundly systemic challenges that humanity will have to face at the dawn of the third millennium. This emergence is of course not easy because one can easily understand that the development of the systemic is mechanically confronted with all the classical disciplines which can all pretend to bring part of the explanations necessary to the understanding of a system and which do not naturally see a good eye a new discipline claim to encompass them in a holistic approach ... The book of Jacques Printz is therefore an extremely important contribution to this new emerging scientific and technical discipline: it is indeed first of all one of the very few "serious" works published in French and offering a good introduction to the systemic. It gives an extremely broad vision of this field, taking a thread given by the architecture of systems, in other words by the part of the systemic that is interested in the structure of systems and their design processes, which allows everyone to fully understand the issues and issues of the systemic. We can only encourage the reader to draw all the quintessence of the masterful work of Jacques Printz which mixes historical reminders explaining how the systemic emerged, introduction to key concepts of the systemic and practical examples to understand the nature and the scope of the ideas introduced.
Download or read book Finisterra written by and published by . This book was released on 1991 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Life and Motion of Socio-Economic Units by : Andrew Frank
Download or read book Life and Motion of Socio-Economic Units written by Andrew Frank and published by CRC Press. This book was released on 2003-09-02 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the ongoing problems researchers in geography and GIS have is studying data that is inherently spatial over a long period of time. One of the main hurdles they have to overcome is the study of groups of people classified by their socio-economic status (one of the main means for governments, companies and research organisations to group together segments of the population). The amount of data collected by governments, business and research organisations has increased markedly in recent years. Geographic Information Systems have been more widely used than ever before for the storage and analysis of this information. Most GIS can handle this information spatially rather than temporally, and have difficulty with the management of socio-economic time series, which relate to spatial units. Accordingly, this book covers the issues ranging from the formal model to differentiate aspects of spatio-temporal data, through philosophical and fundamental reconsideration of time and space to the development of practical solutions to the problem. This book draws together an interdisciplinary group of scientists in the field of geography, computing, surveying and philosophy. It presents the definitive sourcebook on temporal GIS as applied to socio-economic units.
Book Synopsis Systems Engineering with SysML/UML by : Tim Weilkiens
Download or read book Systems Engineering with SysML/UML written by Tim Weilkiens and published by Elsevier. This book was released on 2011-08-29 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: UML, the Universal Modeling Language, was the first programming language designed to fulfill the requirement for "universality." However, it is a software-specific language, and does not support the needs of engineers designing from the broader systems-based perspective. Therefore, SysML was created. It has been steadily gaining popularity, and many companies, especially in the heavily-regulated Defense, Automotive, Aerospace, Medical Device and Telecomms industries, are already using SysML, or are plannning to switch over to it in the near future. However, little information is currently available on the market regarding SysML. Its use is just on the crest of becoming a widespread phenomenon, and so thousands of software engineers are now beginning to look for training and resources. This book will serve as the one-stop, definitive guide that provide an introduction to SysML, and instruction on how to implement it, for all these new users. SysML is the latest emerging programming language--250,000 estimated software systems engineers are using it in the US alone! The first available book on SysML in English Insider information! The author is a member of the SysML working group and has written sections of the specification Special focus comparing SysML and UML, and explaining how both can work together
Book Synopsis Dynamique Non-linéaire Et Le Chaos by :
Download or read book Dynamique Non-linéaire Et Le Chaos written by and published by . This book was released on 1993 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Theory written by Pascal Le Masson and published by Springer. This book was released on 2017-04-06 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook presents the core of recent advances in design theory and its implications for design methods and design organization. Providing a unified perspective on different design methods and approaches, from the most classic (systematic design) to the most advanced (C-K theory), it offers a unique and integrated presentation of traditional and contemporary theories in the field. Examining the principles of each theory, this guide utilizes numerous real life industrial applications, with clear links to engineering design, industrial design, management, economics, psychology and creativity. Containing a section of exams with detailed answers, it is useful for courses in design theory, engineering design and advanced innovation management. "Students and professors, practitioners and researchers in diverse disciplines, interested in design, will find in this book a rich and vital source for studying fundamental design methods and tools as well as the most advanced design theories that work in practice". Professor Yoram Reich, Tel Aviv University, Editor-in-Chief, Research In Engineering Design. "Twenty years of research in design theory and engineering have shown that training in creative design is indeed possible and offers remarkably operational methods - this book is indispensable for all leaders and practitioners who wish to strengthen theinnovation capacity of their company." Pascal Daloz, Executive Vice President, Dassault Systèmes
Book Synopsis Groundwater Dynamics in Hard Rock Aquifers by : Shakeel Ahmed
Download or read book Groundwater Dynamics in Hard Rock Aquifers written by Shakeel Ahmed and published by Springer Science & Business Media. This book was released on 2008-11-18 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the results and findings of the advanced research carried out in a pilot area with a thorough investigation of the structure and functioning of an aquifer in a granitic formation. It characterizes the hard rock aquifer system and examines its properties and behavior as well as systematically details the geophysical, geological and remote sensing applications to conceptualize such an aquifer system.
Book Synopsis A Practical Guide to SysML by : Sanford Friedenthal
Download or read book A Practical Guide to SysML written by Sanford Friedenthal and published by Morgan Kaufmann. This book was released on 2009-08-25 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Practical Guide to SysML: The Systems Modeling Language is a comprehensive guide to SysML for systems and software engineers. It provides an advanced and practical resource for modeling systems with SysML. The source describes the modeling language and offers information about employing SysML in transitioning an organization or project to model-based systems engineering. The book also presents various examples to help readers understand the OMG Systems Modeling Professional (OCSMP) Certification Program. The text is organized into four parts. The first part provides an overview of systems engineering. It explains the model-based approach by comparing it with the document-based approach and providing the modeling principles. The overview of SYsML is also discussed. The second part of the book covers a comprehensive description of the language. It discusses the main concepts of model organization, parametrics, blocks, use cases, interactions, requirements, allocations, and profiles. The third part presents examples that illustrate how SysML supports different model-based procedures. The last part discusses how to transition and deploy SysML into an organization or project. It explains the integration of SysML into a systems development environment. Furthermore, it describes the category of data that are exchanged between a SysML tool and other types of tools, and the types of exchange mechanisms that can be used. It also covers the criteria that must be considered when selecting a SysML. Software and systems engineers, programmers, IT practitioners, experts, and non-experts will find this book useful. *The authoritative guide for understanding and applying SysML *Authored by the foremost experts on the language *Language description, examples, and quick reference guide included
Book Synopsis Bibliographie Géographique Internationale by :
Download or read book Bibliographie Géographique Internationale written by and published by . This book was released on 1995 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimization, Optimal Control and Partial Differential Equations by : Viorel Barbu
Download or read book Optimization, Optimal Control and Partial Differential Equations written by Viorel Barbu and published by Springer Science & Business Media. This book was released on 1992 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Variational methods in mechanics and physical models.- Fluid flows in dielectric porous media.- The impact of a jet with two fluids on a porous wall.- Critical point methods in nonlinear eigenvalue problems with discontinuities.- Maximum principles for elliptic systems.- Exponential dichotomy of evolution operators in Banach spaces.- Asymptotic properties of solutions to evolution equations.- On some nonlinear elastic waves biperiodical or almost periodical in mechanics and extensions hyperbolic nonlinear partial differential equations.- The controllability of infinite dimensional and distributed parameter systems.- Singularities in boundary value problems and exact controllability of hyperbolic systems.- Exact controllability of a shallow shell model.- Inverse problem: Identification of a melting front in the 2D case.- Micro-local approach to the control for the plates equation.- Bounded solutions for controlled hyperbolic systems.- Controllability and turbulence.- The H? control problem.- The H? boundary control with state feedback; the hyperbolic case.- Remarks on the theory of robust control.- The dynamic programming method.- Optimality and characteristics of Hamilton-Jacobi-Bellman equations.- Verification theorems of dynamic programming type in optimal control.- Isaacs' equations for value-functions of differential games.- Optimal control for robot manipulators.- Control theory and environmental problems: Slow fast models for management of renewable ressources.- On the Riccati equations of stochastic control.- Optimal control of nonlinear partial differential equations.- A boundary Pontryagin's principle for the optimal control of state-constrained elliptic systems.- Controllability properties for elliptic systems, the fictitious domain method and optimal shape design problems.- Optimal control for elliptic equation and applications.- Inverse problems for variational inequalities.- The variation of the drag with respect to the domain in Navier-Stokes flow, .- Mathematical programming and nonsmooth optimization.- Scalar minimax properties in vectorial optimization.- Least-norm regularization for weak two-level optimization problems.- Continuity of the value function with respect to the set of constraints.- On integral inequalities involving logconcave functions.- Numerical solution of free boundary problems in solids mechanics.- Authors' index
Book Synopsis Gas-cooled Nuclear Reactors by : France. Commissariat à l'énergie atomique
Download or read book Gas-cooled Nuclear Reactors written by France. Commissariat à l'énergie atomique and published by . This book was released on 2006 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Embedded System Design by : Peter Marwedel
Download or read book Embedded System Design written by Peter Marwedel and published by Springer Science & Business Media. This book was released on 2010-11-16 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until the late 1980s, information processing was associated with large mainframe computers and huge tape drives. During the 1990s, this trend shifted toward information processing with personal computers, or PCs. The trend toward miniaturization continues and in the future the majority of information processing systems will be small mobile computers, many of which will be embedded into larger products and interfaced to the physical environment. Hence, these kinds of systems are called embedded systems. Embedded systems together with their physical environment are called cyber-physical systems. Examples include systems such as transportation and fabrication equipment. It is expected that the total market volume of embedded systems will be significantly larger than that of traditional information processing systems such as PCs and mainframes. Embedded systems share a number of common characteristics. For example, they must be dependable, efficient, meet real-time constraints and require customized user interfaces (instead of generic keyboard and mouse interfaces). Therefore, it makes sense to consider common principles of embedded system design. Embedded System Design starts with an introduction into the area and a survey of specification models and languages for embedded and cyber-physical systems. It provides a brief overview of hardware devices used for such systems and presents the essentials of system software for embedded systems, like real-time operating systems. The book also discusses evaluation and validation techniques for embedded systems. Furthermore, the book presents an overview of techniques for mapping applications to execution platforms. Due to the importance of resource efficiency, the book also contains a selected set of optimization techniques for embedded systems, including special compilation techniques. The book closes with a brief survey on testing. Embedded System Design can be used as a text book for courses on embedded systems and as a source which provides pointers to relevant material in the area for PhD students and teachers. It assumes a basic knowledge of information processing hardware and software. Courseware related to this book is available at http://ls12-www.cs.tu-dortmund.de/~marwedel.
