springer us springer us okt 1999 (102 resultados)

Buch. Condición: Neu. Neuware -Biomedical Engineering Program between Rutgers University and the University of Medicine and Dentistry of New Jersey entitled 'Biopolymers' and 'Patho biology' during the past 15 years. It is our hope that this book will provide the reader with all the infor mation necessary to understand the complexity of the biological reactions that are set into motion by implantation of a material or a device. We hope that this book will provide a framework for thinking about implant interactions with bio logical systems. Although the field of studying pathobiological responses to im plants is still in its infancy, we are now more aware of acute and chronic con ditions that generate inflammatory responses as a result of wear debris, activation of complement, and acute hypersensitivity. As we learn more concerning these responses, it is hoped that our ability to design implants will also improve. We encourage readers to send to us any suggestions of additional topics that they would like to see covered in our book. Frederick H. Silver David L.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 356 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -Imagine that two people have been chosen to be observers in a scien tific experiment involving two photons, or quanta of light. These pho tons originate from a single source and travel in opposite directions an equal distance halfway across the known universe to points where each will be measured or observed. Now suppose that before the pho tons are released, one observer is magically transported to a point of observation halfway across the known universe and the second ob server is magically transported to another point an equal distance in the opposite direction. The task of the observers is to record or meas ure a certain property of each photon with detectors located at the two points so that the data gathered at each can later be compared. Even though the photons are traveling from the source at the speed of light, each observer would have to wait billions of years for one of the photons to arrive at his observation point. Suppose, how ever, that the observers are willing to endure this wait because they hope to test the predictions of a mathematical theorem. This theorem not only allows for the prospect that there could be a correlation be tween the observed properties of the two photons but also indicates that this correlation could occur instantly, or in no time, in spite of the fact that the distance between the observers and their measuring instruments is billions of light years.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 196 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -This book contains all the exercises and solutions of Serge Lang's Complex Analy sis. Chapters I through VITI of Lang's book contain the material of an introductory course at the undergraduate level and the reader will find exercises in all of the fol lowing topics: power series, Cauchy's theorem, Laurent series, singularities and meromorphic functions, the calculus of residues, conformal mappings and har monic functions. Chapters IX through XVI, which are suitable for a more advanced course at the graduate level, offer exercises in the following subjects: Schwarz re flection, analytic continuation, Jensen's formula, the Phragmen-LindelOf theorem, entire functions, Weierstrass products and meromorphic functions, the Gamma function and the Zeta function. This solutions manual offers a large number of worked out exercises of varying difficulty. I thank Serge Lang for teaching me complex analysis with so much enthusiasm and passion, and for giving me the opportunity to work on this answer book. Without his patience and help, this project would be far from complete. I thank my brother Karim for always being an infinite source of inspiration and wisdom. Finally, I want to thank Mark McKee for his help on some problems and Jennifer Baltzell for the many years of support, friendship and complicity. Rami Shakarchi Princeton, New Jersey 1999 Contents Preface vii I Complex Numbers and Functions 1 1. 1 Definition . . . . . . . . . . 1 1. 2 Polar Form . . . . . . . . . 3 1. 3 Complex Valued Functions . 8 1. 4 Limits and Compact Sets . . 9 1. 6 The Cauchy-Riemann Equations .Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 260 pp. Englisch.

Buch. Condición: Neu. Neuware -The Laplace transform is a wonderful tool for solving ordinary and partial differential equations and has enjoyed much success in this realm. With its success, however, a certain casualness has been bred concerning its application, without much regard for hypotheses and when they are valid. Even proofs of theorems often lack rigor, and dubious mathematical practices are not uncommon in the literature for students. In the present text, I have tried to bring to the subject a certain amount of mathematical correctness and make it accessible to un dergraduates. Th this end, this text addresses a number of issues that are rarely considered. For instance, when we apply the Laplace trans form method to a linear ordinary differential equation with constant coefficients, any(n) + an-lY(n-l) + + aoy = f(t), why is it justified to take the Laplace transform of both sides of the equation (Theorem A. 6) Or, in many proofs it is required to take the limit inside an integral. This is always fraught with danger, especially with an improper integral, and not always justified. I have given complete details (sometimes in the Appendix) whenever this procedure is required. IX X Preface Furthermore, it is sometimes desirable to take the Laplace trans form of an infinite series term by term. Again it is shown that this cannot always be done, and specific sufficient conditions are established to justify this operation.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 260 pp. Englisch.

Buch. Condición: Neu. Neuware -The triumphant vindication of bold theories-are these not the pride and justification of our life's work -Sherlock Holmes, The Valley of Fear Sir Arthur Conan Doyle The main purpose of our book is to present and explain mathematical methods for obtaining approximate analytical solutions to differential and difference equations that cannot be solved exactly. Our objective is to help young and also establiShed scientists and engineers to build the skills necessary to analyze equations that they encounter in their work. Our presentation is aimed at developing the insights and techniques that are most useful for attacking new problems. We do not emphasize special methods and tricks which work only for the classical transcendental functions; we do not dwell on equations whose exact solutions are known. The mathematical methods discussed in this book are known collectively as asymptotic and perturbative analysis. These are the most useful and powerful methods for finding approximate solutions to equations, but they are difficult to justify rigorously. Thus, we concentrate on the most fruitful aspect of applied analysis; namely, obtaining the answer. We stress care but not rigor. To explain our approach, we compare our goals with those of a freshman calculus course. A beginning calculus course is considered successful if the students have learned how to solve problems using calculus.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 608 pp. Englisch.

Buch. Condición: Neu. Neuware -The aim of this book, Future of the Telecommunications Industry: Forecasting and Demand Analysis, is to describe leading research in the area of empirical telecommunications demand analysis and forecasting in the light of tremendous market and regulatory changes. Its purpose is to educate the reader about how traditional analytic techniques can be used to assess new telecommunications products and how new analytic techniques can better address existing products. The research presented focuses on new products such as Internet access and additional lines and new techniques such as hazard modeling, adaptive forecasting and neural networks.The scope of this volume includes new telecommunications products, new analytical techniques, and a review of market changes in the US and other countries. Some of the most critical questions facing the industry are addressed here, such as the impact of competition, customer churn, rate re-balancing, and early assessment of new products. The research includes a variety of different countries, products and analytic tools.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 288 pp. Englisch.

Buch. Condición: Neu. Neuware -This book is about problem solving. Specifically, it is about heuristic state-space search under branch-and-bound framework for solving com binatorial optimization problems. The two central themes of this book are the average-case complexity of heuristic state-space search algorithms based on branch-and-bound, and their applications to developing new problem-solving methods and algorithms. Heuristic state-space search is one of the fundamental problem-solving techniques in Computer Science and Operations Research, and usually constitutes an important component of most intelligent problem-solving systems. The search algorithms considered in this book can be classified into the category of branch-and-bound. Branch-and-bound is a general problem-solving paradigm, and is one of the best techniques for optimally solving computation-intensive problems, such as scheduling and planning. The main search algorithms considered include best-first search, depth first branch-and-bound, iterative deepening, recursive best-first search, and space-bounded best-first search. Best-first search and depth-first branch-and-bound are very well known and have been used extensively in Computer Science and Operations Research. One important feature of depth-first branch-and-bound is that it only requires space this is linear in the maximal search depth, making it very often a favorable search algo rithm over best-first search in practice. Iterative deepening and recursive best-first search are the other two linear-space search algorithms. Iterative deepening is an important algorithm in Artificial Intelligence, and plays an irreplaceable role in building a real-time game-playing program.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 228 pp. Englisch.

Buch. Condición: Neu. Neuware -ELECTRE and Decision Support focuses on the areas of engineering and infrastructure investment. It begins with some general comments about the different decision components within the project planning process - the definition of objectives, the identification of alternative courses of action, the establishing of criteria, the evaluation of alternatives and the final recommendation. The authors highlight the ability of Multicriteria Decision Aid to reconcile the economic, technical and environmental dimensions of the projects for its planners. They emphasize the complexity of this process, illustrating the importance of identifying the stakeholders within it, as they greatly influence the definition of the decision criteria. A brief case study illustrates these different aspects. Following a comparison of Cost Benefit Analysis and Multicriteria Decision Aid, the introductory chapter sets out the structure of the book, with four subsequent chapters devoted to the methodology of ELECTRE and three outlining case studies involving different versions of ELECTRE.The chapters concentrating on the ELECTRE methodology first give an overview of the main MCDA methods before presenting the ELECTRE method in detail. Each chapter answers the following questions: (1) In what context should the ELECTRE methods be chosen (2) Which version of the methods is most appropriate to apply to a given problem Another chapter deals with a critical and delicate problem within MCDA - how to adequately assess the role played by each criterion in a given decision problem, and how this translates into an appropriate weighting for it. Each one covers a different civil engineering discipline and each uses a different version of ELECTRE. The final chapter on methodology presents some accessories which, when used with ELECTRE, can greatly enhance its usefulness in practice.This book is outstanding in many respects. I am convinced that the simple, clear and concise style of the authors will make this book accessible to very many readers. No important aspect of the subject is neglected, and the concise nature of this book does not hinder its originality. Last but not least, the manner in which the case studies are described allows the authors not only to demonstrate the validity of the approach and procedures presented, but also to help the reader understand how to apply them in an effective manner.Taken from the Foreword by Bernard Roy, University Paris-DauphineSpringer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 228 pp. Englisch.

Buch. Condición: Neu. Neuware -'Je crus que j'aurais assez des quatre [preceptes] suivants [ . . . ]. Le premier etait de ne recevoir jamais aucune chose pour vraie que je ne la connusse evidemment etre telle [ . . . ]. Le second, de diviser chacune des difficultes que j'examinerais en aut ant de parcelles qu'il se pourrait [ . . . ]. Le troisieme, de conduire par ordre mes pensees, en commenSpringer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 136 pp. Englisch.

Buch. Condición: Neu. Neuware -An understanding of emergent computation requires a profound revision of the most fundamental ideas. A noticeable attempt of such a rethinking is a world view in which natural systems are seen not as separate entities but as integrated parts of a unified whole. The book for the first time presents such a mathematical structure, which remarkably is based on integers as the single concept. As integers are considered to be the most fundamental entities irreducible to something simpler, this makes the mathematical structure a final theory, and thus we do not have to look for its explanation in terms of deeper concepts. The book is not only applicable to models of computation and optimization but also has scientific consequences, as it contributes to a rethinking of the most fundamental ideas about nature. Audience: The book is written at a level suitable for advanced undergraduate students and graduate students as well as research workers and practitioners in computer science information technology, mathematics and physics. The book is suitable as a reference or as supplementary reading material for an advanced graduate course. Only a basic knowledge of calculus is required.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 184 pp. Englisch.

Buch. Condición: Neu. Neuware -Glycotechnology brings together in one place important contributions and up-to-date research results in this fast moving area.Glycotechnology serves as an excellent reference, providing insight into some of the most challenging research issues in the field.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 106 pp. Englisch.

Buch. Condición: Neu. Neuware -Risk-Based Environmental Decision: Methods and Culture presents the principles of human health risk analysis as they are applied in environmental decisions. It balances the discussion of scientific theory and methods, philosophical analysis, and applications in regulatory decisions. The material is directed towards risk analysts who must apply their skills in a policy setting, and towards policy analysts who must use risk estimates. The presentation is suited ideally as an introductory text on the methods of risk analysis and on the cultural issues that underlie these methodologies.An important feature of Risk-Based Environmental Decision: Methods and Culture is that it is designed around a series of detailed case studies of environmental risk analysis which walk the reader from the historical nature of the problem, to the formulation as a risk-based problem, to the conduct of risk analysis, and on to the application, debate, and defense of the risk analysis.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 244 pp. Englisch.

Buch. Condición: Neu. Neuware -One of the major themes of human population genetics is assaying genetic variation in human populations. The ultimate goal of this objective is to understand the extent of genetic diversity and the use of this knowledge to reconstruct our evolutionary history. The discipline had undergone a revolutionary transition with the advent of molecular techniques in the 1980s. With this shift, statistical methods have also been developed to perceive the biological and molecular basis of human genetic variation.Using the new perspectives gained during the above transition, this volume describes the applications of molecular markers spanning the autosomal, Y-chromosomal and mitochondrial genome in the analysis of human diversity in contemporary populations. This is the first reference book of its kind to bring together data from these diverse sets of markers for understanding evolutionary histories and relationships of modern humans in a single volume.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 260 pp. Englisch.

Buch. Condición: Neu. Neuware -If the truth be known, I am only a partially reformed idealist. In the secret depths of my soul, I still wish to make the world a better place and sometimes fantasize about heroically eradicating its faults. When I encounter its limitations, it is consequently with deep regret and continued surprise. How, I ask myself, is it possible that that which seems so fight can be a chimera And why, I wonder, aren't people as courageous, smart, or nice as I would like The pain of realizing these things is sometimes so intense that I want to close my eyes and lose myself in the kinds of daydreams that comforted me as a youngster. One thing is clear, my need to come to grips with my idealism had its origin in a lifetime of naivet6. From the beginning, I wanted to be a 'good' person. Often when life was most treacherous, I retreated into a comer from whence I escaped into reveries of moral glory. When I was very young, my faith was in religion. In Hebrew school, I took my lessons seriously and tried to apply them at home. By my teen years, this had been replaced by an allegiance to socialism. In the Brooklyn where I grew up, my teachers and relatives made this seem the natural course. When I reached my twenties, however, and was obliged to confront a series of personal deficiencies, psychotherapy shouldered its way to the fore.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 284 pp. Englisch.

Buch. Condición: Neu. Neuware -Mobile communications havepermeated the globe in both business and social cultures. In only af ew short years, Japan aloneh ash ad more than ten million subscribers enter the mobilem arket. Such explosive popularity is an indication ofa strong commercial demand for communications in both the tethered and tetherless environments. Accompanying the vibrant growth in mobile communications is the growth in multimedia communications, includingthe Internet. Mobile and multime dia communications technologies are merging, making mobile computing ak ey phrasei n the coming advanced information communication era. Thegrowth i n these dynamic industries shows that achange in our chosen method of commu nications is already well advanced. Reading e mail and connecting to various information feeds have already become a part ofdaily business activities. We are trying to grasp theo verall picture of mobile computing. Its shape and form are just starting to appear as personal digital assistants (PDA), handheld personal computers (HPC), wireless data communication services, and com mercial software designed for mobile environments. We are at the cusp of vast popularization of ¿computers on the go. ¿ ¿Any time Anywhere Computing¿ provides the reader with an understand able explanationo ft he current developments and commercialization of mobile computing. Thec oret ec hnologies and applications needed to un derstand the industry are comprehensively addressed. Thebook emphasizes three infrastruc tures: (1) wireless communication network infrastructure, (2) terminal devices (or ¿computers on the gö), and (3) software middleware and architectures that support wireless and mobile computing.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 196 pp. Englisch.

Buch. Condición: Neu. Neuware -Efforts to visualize multivariate densities necessarily involve the use of cross-sections, or, equivalently, conditional densities. This book focuses on distributions that are completely specified in terms of conditional densities. They are appropriately used in any modeling situation where conditional information is completely or partially available. All statistical researchers seeking more flexible models than those provided by classical models will find conditionally specified distributions of interest.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 434 pp. Englisch.

Buch. Condición: Neu. Neuware -In many electronic systems, such as telecommunication or measurement systems, oscillations play an essential role in the information processing. Each electronic system poses different requirements on these oscillations, depending on the type and performance level of that specific system. It is the designer's challenge to find the specifications for the desired oscillation and to implement an electronic circuit meeting these specifications.As the desired oscillations have to fulfill many requirements, the design process can become very complex. To find an optimal solution, the designer requires a design methodology that is preferably completely top-down oriented. To achieve such a methodology, it must be assured that each property of the system can be optimized independently of all other properties.Oscillators and Oscillator Systems: Classification, Analysis and Synthesis takes a systematic approach to the design of high-performance oscillators and oscillator systems. A fundamental classification of oscillators, based on their internal timing references, forms the basis of this approach. The classification enables the designer to make strategic design decisions at a high hierarchical level of the design process. Techniques, derived from the systematic approach, are supplied to the designer to enable him or her to bring the performance of the system as close as possible to the fundamental limits.Oscillators and Oscillator Systems: Classification, Analysis and Synthesis is an excellent reference for researchers and circuit designers, and may be used as a text for advanced courses on the topic.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 300 pp. Englisch.

Buch. Condición: Neu. Neuware -I first met Ernest Furchtgott twenty-five years ago after joining the faculty of the College of Social Work at the University of South Carolina. At that time, Ernie chaired the Department of Psychology. In the following three years we collaborated with an Academic Committee on Gerontology in conceptualizing and shaping the University's Certificate of Graduate Study in Gerontology Program, guiding it to final approval by the South Carolina Commission on Higher Education. For twenty years we team taught our graduate-level course, 'Psychosocial Approaches to Geron tology,' involving colleagues from related disciplines. Over the years, we examined and jointly graded hundreds of research posters prepared by our graduate students in gerontology as their final course requirement. Several years ago, Ernie formally retired from the university. He in stantly agreed to my request that he continue teaching the psychology of aging portion of our interdisciplinary course. On campus nearly every day since retirement, Ernie frequently telephoned to discuss are cent article in The Gerontologist or a paper presentation that had ex cited him at the Gerontological Society's annual scientific meeting. He maintained a clear presence in the academic community.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 412 pp. Englisch.

Buch. Condición: Neu. Neuware -Drawing on a wide variety of modern and classical sources and multiple disciplines, this book presents hypothesizes about the relationship between human language and thought to brain specialization. The authors focus on aphasia-language disorder resulting from local brain damage and show that the clinical aspect represents not only loss of function of the damaged area, but also results from the interaction between damaged and intact areas of the brain.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 348 pp. Englisch.

Buch. Condición: Neu. Neuware -Bilingual Selection of Syntactic Knowledge motivates a more formal approach in theoretical linguistics by investigating the parameters of syntactic variation and simultaneous acquisition of multiple languages. Taking the behavior of the Null Subject Parameter (NSP) across languages as an illustration, the book raises important questions concerning the adequacy of standard parameter-setting models in the face of compelling evidence from both mono- and bilingual child speech data.Teresa Satterfield argues convincingly that so-called `universal' premises guiding well-known parametric approaches greatly complicate attempts to construct an economical bilingual analysis. Further, she demonstrates the compatibility of more recent formulations in linguistic theory (i.e. the Minimalist Program) and studies on language learnability (Clark, 1992, 1993; Kapur, 1994) which present the view that while initially convincing, standard parameter models are potentially costly and less than effective in terms of monolinguals as well.Using Clark's application of the Genetic Algorithm as a point of departure, Bilingual Selection of Syntactic Knowledge describes a number of computational simulations. These simulations not only demonstrate the robustness of the GA-as-language-learner, they offer a more detailed account of the parameter-setting task confronting the bilingual child while also making more precise predictions regarding the process of syntactic knowledge.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 188 pp. Englisch.

Buch. Condición: Neu. Neuware -The twentieth century has seen a remarkable evolution of environmental health and environmental protection concerns and concepts in the United States. As a teacher of Environmental Health since the late 1950s, I have witnessed the many twists and turns that have marked the latter half of the century, and have had to seek continuously to explain these phenomena to my students in some rational manner. We have witnessed the following and more: great progress in controlling acute infectious diseases through successes in drinking water treatment and food processing; the emergence of greater concern with trace chemicals in air and water and their role in chronic disease causation; conflicting attitudes toward miraculous chemicals such as DDT (which promised relief from arthropod-borne scourges, then came to be seen as another chemical threat to our children and our environment); then the reemerging concern with infectious diseases precipitated by blood-borne pathogens such as HIV. All this occurred against a backdrop of scientific uncertainty and amid failures of risk assessment and risk communication, together with press sensationalism-from 'mad cow disease' to 'flesh eating' streptococci. No wonder the public is confused.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 212 pp. Englisch.

Buch. Condición: Neu. Neuware -The unrelenting growth of wireless communications continues to raise new research and development problems that require unprecedented interactions among communication engineers. In particular, specialists in transmission and specialists in networks must often cross each other's boundaries. This is especially true for CDMA, an access technique that is being widely accepted as a system solution for next-generation mobile cellular systems, but it extends to other system aspects as well. Major challenges lie ahead, from the design of physical and radio access to network architecture, resource management, mobility management, and capacity and performance aspects. Several of these aspects are addressed in this volume, the fourth in the edited series on Multiaccess, Mobility and Teletraffic for Wireless Communications. It contains papers selected from MMT'99, the fifth Workshop held on these topics in October 1999 in Venezia, Italy. The focus of this workshop series is on identifying, presenting, and discussing the theoretical and implementation issues critical to the design of wireless communication networks. More specifically, these issues are examined from the viewpoint of the impact each one of them can have on the others. Specific emphasis is given to the evolutionary trends of universal wireless access and software radio. Performance improvements achieved by spectrally efficient codes and smart antennas in experimental GSM testbeds are presented. Several contributions address critical issues regarding multimedia services for Third-Generation Mobile Radio Networks ranging from high rate data transmission with CDMA technology to resource allocation for integrated Voice/WWW traffic.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 328 pp. Englisch.

Buch. Condición: Neu. Neuware -Lawton Chiles GovernorofFlorida, 1991-1998 Social Change, Public Policy and Community Collaborations: Training Human Development Professionalsfor the Twenty-First Century is more than the name of the Third National Applied Developmental Science Conference; it is more than the name of a book prepared from the proceedings of this conference. It describes one of the largest and most complex challenges facing state government, higher education and communities in the coming decade. The answer to this challenge will not be found in a college or program in our higher education institution nor in laws conceived and written in state capitals. The answers to this challenge are to be found at the place where academia, public policy, and communities meet. The problems and issues that are facing our children and families will require that all the players work together to develop community-driven programs, designed and evaluated using current research and staffed by highly trained professionals. It will be critical that academia, policy makers, legislators, and community members work together to ensure that the programs we design work. We must ensure that research is being conducted so that programs that work better are continued and programs that don't are stopped.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 184 pp. Englisch.

Buch. Condición: Neu. Neuware -Combinatorial (or discrete) optimization is one of the most active fields in the interface of operations research, computer science, and applied math ematics. Combinatorial optimization problems arise in various applications, including communications network design, VLSI design, machine vision, air line crew scheduling, corporate planning, computer-aided design and man ufacturing, database query design, cellular telephone frequency assignment, constraint directed reasoning, and computational biology. Furthermore, combinatorial optimization problems occur in many diverse areas such as linear and integer programming, graph theory, artificial intelligence, and number theory. All these problems, when formulated mathematically as the minimization or maximization of a certain function defined on some domain, have a commonality of discreteness. Historically, combinatorial optimization starts with linear programming. Linear programming has an entire range of important applications including production planning and distribution, personnel assignment, finance, alloca tion of economic resources, circuit simulation, and control systems. Leonid Kantorovich and Tjalling Koopmans received the Nobel Prize (1975) for their work on the optimal allocation of resources. Two important discover ies, the ellipsoid method (1979) and interior point approaches (1984) both provide polynomial time algorithms for linear programming. These algo rithms have had a profound effect in combinatorial optimization. Many polynomial-time solvable combinatorial optimization problems are special cases of linear programming (e.g. matching and maximum flow). In addi tion, linear programming relaxations are often the basis for many approxi mation algorithms for solving NP-hard problems (e.g. dualheuristics).Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 660 pp. Englisch.

Buch. Condición: Neu. Neuware -Economics of Urban Highway Congestion and Pricing offers the most extensive examination to date of the relationship between congestion tolls and highway capacity in the long run. This study breaks new ground in the economic theory of optimal road capacity by including theoretical contributions, empirical studies, and simulation experiments that all pertain to the general topic reflected in the title. The book is organized into four sections: 1) highway traffic flow; 2) commuter choice of tollways versus freeways; 3) congestion pricing in the short run; and 4) road capacity and pricing in the long run.In particular, the first section on highway traffic flow examines the chief models and empirical studies of vehicular flow on urban highways. The second section of the book is a theoretical and empirical examination of the choice that commuters make between urban tollways and freeways. The third section is devoted to congestion pricing in the short run, the time period in which the urban highway facilities are taken as given. This section is the most important part of the book from the standpoint of public policy. The fourth and last section of the book considers road capacity and pricing in the long run, with the concluding chapter gathering the authors' main results in one place and making recommendations both for current policy and for future research.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 260 pp. Englisch.

Buch. Condición: Neu. Neuware -The analysis ofwhat might be called 'dynamic nonlinearity' in time series has its roots in the pioneering work ofBrillinger (1965) - who first pointed out how the bispectrum and higher order polyspectra could, in principle, be used to test for nonlinear serial dependence - and in Subba Rao and Gabr (1980) and Hinich (1982) who each showed how Brillinger's insight could be translated into a statistical test. Hinich's test, because ittakes advantage ofthe large sample statisticalpropertiesofthe bispectral estimates became the first usable statistical test for nonlinear serial dependence. We are forever grateful to Mel Hinich for getting us involved at that time in this fascinating and fruitful endeavor. With help from Mel (sometimes as amentor,sometimes as acollaborator) we developed and applied this bispectral test in the ensuing period. The first application ofthe test was to daily stock returns {Hinich and Patterson (1982, 1985)} yielding the important discovery of substantial nonlinear serial dependence in returns, over and above the weak linear serial dependence that had been previously observed. The original manuscript met with resistance from finance journals, no doubt because finance academics were reluctant to recognize the importance of distinguishing between serial correlation and nonlinear serial dependence. In Ashley, Patterson and Hinich (1986) we examined the power and sizeofthe test in finite samples.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 220 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -Psychoneuroimmunology is the first textbook to examine the complex functional relationships between the nervous system, the neuroendocrine and the immune system.The international leaders in this field have been brought together to create this pioneering text; each contributing from their area of expertise. The result is a comprehensive yet accessible interdisciplinary introduction to psychoneuroimmunology which also takes you further than the foundations of those fascinating topics by covering the most recent research in HIV/AIDS, autoimmune diseases, and the reactivation of latent herpes viruses. Attention is also given to the effects of behavior such as physical exercise, sleep, acute and chronic stress, and conditioning of immune functions in animals and humans. The whole is brought together with a wealth of cited research studies, and over 200 illustrations.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 612 pp. Englisch.

Buch. Condición: Neu. Neuware -Sigma delta modulation has become a very useful and widely applied technique for high performance Analog-to-Digital (A/D) conversion of narrow band signals. Through the use of oversampling and negative feedback, the quantization errors of a coarse quantizer are suppressed in a narrow signal band in the output of the modulator. Bandpass sigma delta modulation is well suited for A/D conversion of narrow band signals modulated on a carrier, as occurs in communication systems such as AM/FM receivers and mobile phones.Due to the nonlinearity of the quantizer in the feedback loop, a sigma delta modulator may exhibit input signal dependent stability properties. The same combination of the nonlinearity and the feedback loop complicates the stability analysis. In Bandpass Sigma Delta Modulators, the describing function method is used to analyze the stability of the sigma delta modulator. The linear gain model commonly used for the quantizer fails to predict small signal stability properties and idle patterns accurately.In Bandpass Sigma Delta Modulators an improved model for the quantizer is introduced, extending the linear gain model with a phase shift. Analysis shows that the phase shift of a sampled quantizer is in fact a phase uncertainty. Stability analysis of sigma delta modulators using the extended model allows accurate prediction of idle patterns and calculation of small-signal stability boundaries for loop filter parameters. A simplified rule of thumb is derived and applied to bandpass sigma delta modulators.The stability properties have a considerable impact on the design of single-loop, one-bit, high-order continuous-time bandpass sigma delta modulators. The continuous-time bandpass loop filter structure should have sufficient degrees of freedom to implement the desired (small-signal stable) sigma delta modulator behavior.Bandpass Sigma Delta Modulators will be of interest to practicing engineers and researchers in the areas of mixed-signal and analog integrated circuit design.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 212 pp. Englisch.

Buch. Condición: Neu. Neuware -From the Foreword:`The chief aim of this book is to present the reader with an integrated system of methods dealing with geographical statistics (`geostatistics') and their applications. It sums up developments based on the vast experience accumulated by Professor Bachi over several decades of research. Interest in the quantitative locational aspects of geography and in the common ground of geography and statistics has grown rapidly, involving an ever-increasing spectrum of scientific disciplines . the present volume will fill a genuine need - as a textbook, as a reference work, and as a practical aid for geographers, applied statisticians, demographers, ecologists, regional planners, economists, professional staff of official statistical agencies, and others.' - E. Peritz, G. Nathan, N. Kadmon.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 524 pp. Englisch.

Buch. Condición: Neu. Neuware -This new book on Analog Circuit Design contains the revised contributions of all the tutorial speakers of the eight workshop AACD (Advances in Analog Circuit Design), which was held at Nice, France on March 23-25, 1999. The workshop was organized by Yves Leduc of TI Nice, France. The program committee consisted of Willy Sansen, K.U.Leuven, Belgium, Han Huijsing, T.U.Delft, The Netherlands and Rudy van de Plassche, T.U.Eindhoven, The Netherlands. The aim of these AACD workshops is to bring together a restricted group of about 100 people who are personally advancing the frontiers of analog circuit design to brainstorm on new possibilities and future developments in a restricted number of fields. They are concentrated around three topics. In each topic six speakers give a tutorial presentation. Eighteen papers are thus included in this book. The topics of 1999 are: (X)DSL and other communication systems RF MOST models Integrated filters and oscillators The other topics, which have been coverd before, are: 1992 Operational amplifiers A-D Converters Analog CAD 1993 Mixed-mode A+D design Sensor interfaces Communication circuits 1994 Low-power low-voltage design Integrated filters Smart power 1995 Low-noise low-power low-voltge design Mixed-mode design with CAD tools Voltage, current and time references vii viii 1996 RF CMOS circuit design Bandpass sigma-delta and other data converters Translinear circuits 1997 RF A-D Converters Sensor and actuator interfaces Low-noise oscillators, PLL's and synthesizers 1998 I-Volt electronics Design and implementation of mixed-mode systems Low-noise amplifiers and RF power amplifiers for telecommunicationsSpringer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 394 pp. Englisch.