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Electrical drives lie at the heart of most industrial processes and make a major contribution to the comfort and high quality products we all take for granted. They provide the controller power needed at all levels, from megawatts in cement production to milliwatts in wrist watches. Other examples are legion, from the domestic kitchen to public utilities. The modern electrical drive is a complex item, comprising a controller, a static converter and an electrical motor. Some can be programmed by the user. Some can communicate with other drives. Semiconductor switches have improved, intelligent power modules have been introduced, all of which means that control techniques can be used now that were unimaginable a decade ago. Nor has the motor side stood still: high-energy permanent magnets, semiconductor switched reluctance motors, silicon micromotor technology, and soft magnetic materials produced by powder technology are all revolutionising the industry. But the electric drive is an enabling technology, so the revolution is rippling throughout the whole of industry.

#TELE:ELEN --- Electric driving --- Electric machinery --- Electric power --- Power transmission --- Electrical engineering. --- System theory. --- Electrical Engineering. --- Systems Theory, Control. --- Systems, Theory of --- Systems science --- Science --- Electric engineering --- Engineering --- Philosophy

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Since the first edition of this book was published seven years ago, the field of modeling and simulation of communication systems has grown and matured in many ways, and the use of simulation as a day-to-day tool is now even more common practice. With the current interest in digital mobile communications, a primary area of application of modeling and simulation is now in wireless systems of a different flavor from the `traditional' ones. This second edition represents a substantial revision of the first, partly to accommodate the new applications that have arisen. New chapters include material on modeling and simulation of nonlinear systems, with a complementary section on related measurement techniques, channel modeling and three new case studies; a consolidated set of problems is provided at the end of the book.

654.1 --- Telecommunication systems --- -654.1 Telegraphy. Telephony. Radio. Television --- Telegraphy. Telephony. Radio. Television --- Communication systems --- Communications systems --- Systems, Communication --- Computer simulation --- Systèmes de télécommunications --- Simulation par ordinateur --- EPUB-LIV-FT SPRINGER-B --- Telecommunication systems -- Computer simulation. --- Engineering. --- System theory. --- Electrical engineering. --- Electrical Engineering. --- Systems Theory, Control. --- 654.1 Telegraphy. Telephony. Radio. Television --- Electronic systems --- Telecommunication --- Telecommunication. --- Computer simulation. --- Computer engineering. --- Systems theory. --- Systems, Theory of --- Systems science --- Science --- Electric engineering --- Engineering --- Philosophy --- Telecommunication systems.

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Our ontology as well as our grammar are, as Quine affirms, ineliminable parts of our conceptual contribution to our theory of the world. It seems impossible to think of enti­ ties, individuals and events without specifying and constructing, in advance, a specific language that must be used in order to speak about these same entities. We really know only insofar as we regiment our system of the world in a consistent and adequate way. At the level of proper nouns and existence functions we have, for instance, a standard form of a regimented language whose complementary apparatus consists of predicates, variables, quantifiers and truth functions. If, for instance, the discoveries in the field of Quantum Mechanics should oblige us, in the future, to abandon the traditional logic of truth functions, the very notion of existence, as established until now, will be chal­ lenged. These considerations, as developed by Quine, introduce us to a conceptual perspective like the "internal realist" perspective advocated by Putnam whose principal aim is, for cer­ tain aspects, to link the philosophical approaches developed respectively by Quine and Wittgenstein. Actually, Putnam conservatively extends the approach to the problem of ref­ erence outlined by Quine: in his opinion, to talk of "facts" without specifying the language to be used is to talk of nothing.

Cognitie --- Cognitieve wetenschap --- Cognition --- Cognitive science --- Sciences cognitives --- Wetenschap [Cognitieve ] --- Cognition. --- Cognitive science. --- Cognitive psychology. --- System theory. --- Computers. --- Artificial intelligence. --- Epistemology. --- Cognitive Psychology. --- Systems Theory, Control. --- Theory of Computation. --- Artificial Intelligence. --- Epistemology --- Theory of knowledge --- Philosophy --- Psychology --- AI (Artificial intelligence) --- Artificial thinking --- Electronic brains --- Intellectronics --- Intelligence, Artificial --- Intelligent machines --- Machine intelligence --- Thinking, Artificial --- Bionics --- Digital computer simulation --- Electronic data processing --- Logic machines --- Machine theory --- Self-organizing systems --- Simulation methods --- Fifth generation computers --- Neural computers --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Calculators --- Cyberspace --- Systems, Theory of --- Systems science --- Science --- Psychology, Cognitive

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Optimal control methods are used to determine optimal ways to control a dynamic system. The theoretical work in this field serves as a foundation for the book, which the authors have applied to business management problems developed from their research and classroom instruction. Sethi and Thompson have provided management science and economics communities with a thoroughly revised edition of their classic text on Optimal Control Theory. The new edition has been completely refined with careful attention to the text and graphic material presentation. Chapters cover a range of topics including finance, production and inventory problems, marketing problems, machine maintenance and replacement, problems of optimal consumption of natural resources, and applications of control theory to economics. The book contains new results that were not available when the first edition was published, as well as an expansion of the material on stochastic optimal control theory.

Management --- Control theory --- Operations research --- Mathematical models --- Operations research. --- Decision making. --- Probabilities. --- System theory. --- Mathematical optimization. --- Production management. --- Economics, Mathematical . --- Operations Research/Decision Theory. --- Probability Theory and Stochastic Processes. --- Systems Theory, Control. --- Optimization. --- Operations Management. --- Quantitative Finance. --- Economics --- Mathematical economics --- Econometrics --- Mathematics --- Manufacturing management --- Industrial management --- Optimization (Mathematics) --- Optimization techniques --- Optimization theory --- Systems optimization --- Mathematical analysis --- Maxima and minima --- Simulation methods --- System analysis --- Systems, Theory of --- Systems science --- Science --- Probability --- Statistical inference --- Combinations --- Chance --- Least squares --- Mathematical statistics --- Risk --- Deciding --- Decision (Psychology) --- Decision analysis --- Decision processes --- Making decisions --- Management decisions --- Choice (Psychology) --- Problem solving --- Operational analysis --- Operational research --- Industrial engineering --- Management science --- Research --- System theory --- Methodology --- Philosophy --- Decision making --- Management - Mathematical models

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The objective of the workshops associated with the ER2000 19th International Conference on Conceptual Modeling was to give participants the opportunity to present and discuss emerging, hot topics, thus adding new perspectives to conceptual modeling. This attracts communities which have begun to or which have already recognized the importance of conceptual modeling for solving their problems. To meet this objective, we selected the following two topics: { Conceptual Modeling Approaches for E-Business (eCOMO2000) aimed at studying the application of conceptual modeling techniques speci cally to e-business. { The World Wide Web and Conceptual Modeling (WCM2000) which analyzes how conceptual modeling can help address the challenges of Web devel- ment, management, and use. eCOMO2000 is the rst international workshop on Conceptual Modeling - proaches for E-Business. It was intended to work out and to discuss the actual state of research on conceptual modeling aspects and methods within the realm of the network economy, which is driven by both traditionally organized ent- prises and dynamic networks. Following the philosophy of the ER workshops, the selection of eCOMO contributions was done very carefully and restrictively (six accepted papers out of thirteen submissions) in order to guarantee an excellent workshop program. We are deeply indebted to the authors and to the members of the program committee, whose work resulted in this outstanding program.

Database design --- Relational databases --- Computer Science --- Engineering & Applied Sciences --- Computer science. --- Information technology. --- Business --- Computer communication systems. --- Database management. --- Information storage and retrieval. --- System theory. --- Computer Science. --- Database Management. --- Computer Communication Networks. --- Systems Theory, Control. --- Information Systems Applications (incl. Internet). --- Information Storage and Retrieval. --- IT in Business. --- Data processing. --- Systems, Theory of --- Systems science --- Science --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Electronic data processing --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- IT (Information technology) --- Technology --- Telematics --- Information superhighway --- Knowledge management --- Informatics --- Philosophy --- Distributed processing --- Systems theory. --- Information storage and retrieva. --- Information storage and retrieval systems. --- Automatic data storage --- Automatic information retrieval --- Automation in documentation --- Computer-based information systems --- Data processing systems --- Data storage and retrieval systems --- Discovery systems, Information --- Information discovery systems --- Information processing systems --- Information retrieval systems --- Machine data storage and retrieval --- Mechanized information storage and retrieval systems --- Computer systems --- Electronic information resources --- Data libraries --- Digital libraries --- Information organization --- Information retrieval --- Application software. --- Business—Data processing. --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software --- Database design - Congresses --- Relational databases - Congresses