springer us springer us jan 1997 (125 resultados)

Taschenbuch. Condición: Neu. Neuware -Schools concentrate too much on knowledge and not enough on insite. Jostein Gaarder, philosopher, Bergen The problems of the world cannot possibly be solved by sceptics or cynics whose horizons are limited by the obvious realities. We need men who can dream of things that never were. John F. Kennedy, Dublin, Ireland, 28 June 1963 It is only when practitioners realize what they are dealing with that they can even begin to understand how to begin to help. This book was of starting the ball rolling, and is compiled and written with the intention a general overview of as much as possible. Practitioners from other disciplines have asked me to direct the book at their professions, so that I may achieve a greater readership. This is impossible: I am an osteopath. Due to the scope of sports medicine, especially in the field of osteopathy, this book is by no me ans complete. I may have omitted some basic concepts but they can be found elsewhere as the reader searches the references. What I have included is some basic concepts that I feel need driving horne.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 408 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -The future of healthcare may be very simple. You will sit in your living room chair and drink your tea, coffee, and beer. As you sip, the chair will absorb an encyclopedia of knowledge about your physical state of affairs. A life-management computer in your kitchen will integrate the data and then display it for you on your watch face. A daily physical work-up precisely tailored to your body will pop up on the display, showing you what you have to do over the next 24 hours to avoid all the major disease processes currently plaguing the world. This comprehensive data bank will draw on all the world's medical databases, which have been integrated to help you prevent disease. You will rise from your chair and undertake an exact modicum of exercise tailored to your requirements, performing proscribed activities that will build your stamina precisely based on your 'chair data. ' The health status-monitoring sweatshirt that you wear during exercise will continue its analysis throughout the day. Your diet will be calibrated from your medical database, which vii viii 21st-CENTURY MIRACLE MEDICINE will be stored in a now-common bathroom appliance, the special preventive care server. In fact, clothed in your own domestic decor, the home will become the most sophisticated medical center in the world. All you have to do is keep going, as medicine becomes an invisible service, and your life will be effortlessly extended ten to twenty years.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 372 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware - This book presents an algebraic development of the theory of countable state space Markov chains with discrete- and continuous-time parameters. A Markov chain is a stochastic process characterized by the Markov prop erty that the distribution of future depends only on the current state, not on the whole history. Despite its simple form of dependency, the Markov property has enabled us to develop a rich system of concepts and theorems and to derive many results that are useful in applications. In fact, the areas that can be modeled, with varying degrees of success, by Markov chains are vast and are still expanding. The aim of this book is a discussion of the time-dependent behavior, called the transient behavior, of Markov chains. From the practical point of view, when modeling a stochastic system by a Markov chain, there are many instances in which time-limiting results such as stationary distributions have no meaning. Or, even when the stationary distribution is of some importance, it is often dangerous to use the stationary result alone without knowing the transient behavior of the Markov chain. Not many books have paid much attention to this topic, despite its obvious importance.

Buch. Condición: Neu. Neuware - Henkin-Keisler models emanate from a modification of the Henkin construction introduced by Keisler to motivate the definition of ultraproducts. Keisler modified the Henkin construction at that point at which `new' individual constants are introduced and did so in a way that illuminates a connection between Henkin-Keisler models and ultraproducts. The resulting construction can be viewed both as a specialization of the Henkin construction and as an alternative to the ultraproduct construction. These aspects of the Henkin-Keisler construction are utilized here to present a perspective on ultraproducts and their applications accessible to the reader familiar with Henkin's proof of the completeness of first order logic and naive set theory. This approach culminates in proofs of various forms of the Keisler-Shelah characterizations of elementary equivalence and elementary classes via Henkin-Keisler models. The presentation is self-contained and proofs of more advanced results from set theory are introduced as needed. Audience: Logicians in philosophy, computer science, linguistics and mathematics.

Buch. Condición: Neu. Neuware - In the 15 years of the acquired immunodeficiency syndrome (AIDS) pandemic much has been learnt about its natural history and complications. It is clear that the lung is a major target organ both for the human immunodeficiency virus (HIV), and a wide array of infectious and non-infectious pulmonary complications. A great deal of information on the epidemiology, microbiology, immunology, clinical features, diagnosis and management of these pulmonary complications has accumulated during the past 15 years. Given the enormous explosion in information, it is now timely to bring together this knowledge in this 25-chapter volume on AIDS and respiratory medicine. The contributors to this volume are prominent epidemiologists, doctors, microbiologists and scientists from Europe, USA and Africa. Professors Chretien and Enarson give a masterful account of the epidemiology of lung complications of HIV. Drs Zumla, Rowland Jones and Professor McMichael give a detailed summary of the lung immune responses to HIV. They outline normal lung defenses and discuss the consequences of HIV infection on them. The pulmonary radiological features of HIV and its complications as seen in the USA and Europe are illustrated by Professors Armstrong and Dee and this is compared and contrasted by Professor Tshibwabwa-Tumba who brings together his vast experience of chest X-rays in AIDS patients from Central Africa. Drs O'Doherty and Miller deal with the uses, and potential applications, of nuclear medicine in imaging of the chest in AIDS patients.

Buch. Condición: Neu. Neuware -This book is primarily concerned with the study of cohomology theories of general topological spaces with 'general coefficient systems.' Sheaves play several roles in this study. For example, they provide a suitable notion of 'general coefficient systems.' Moreover, they furnish us with a common method of defining various cohomology theories and of comparison between different cohomology theories. The parts of the theory of sheaves covered here are those areas important to algebraic topology. Sheaf theory is also important in other fields of mathematics, notably algebraic geometry, but that is outside the scope of the present book. Thus a more descriptive title for this book might have been Algebraic Topology from the Point of View of Sheaf Theory. Several innovations will be found in this book. Notably, the concept of the 'tautness' of a subspace (an adaptation of an analogous notion of Spanier to sheaf-theoretic cohomology) is introduced and exploited throughout the book. The factthat sheaf-theoretic cohomology satisfies 1 the homotopy property is proved for general topological spaces. Also, relative cohomology is introduced into sheaf theory. Concerning relative cohomology, it should be noted that sheaf-theoretic cohomology is usually considered as a 'single space' theory.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 520 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -ThiS is not only a book of instruction in chainmaking but it is also a work celebrating man's continuous creativity over thousands of years. At times something that man creates has far-reach ing effects; an example that quickly comes to mind is the wheel, which has enabled many devel opments, from pottery to computers. At this point it is important to note that these same wheels could not have been made without metal tools. From early Neolithic times on gold was a favorite choice in the making of jewelry. During the Neolithic period these 'shining stones,' probably alluvial, were prized. Actually gold was cold worked as if it were a stone. There is a surviving example of cold-worked gold from Catahuyuk (present day Turkey) estimated to have been made in 6500 B. C. There were only four metals on the earth's surface that were found in sufficient quantity to be used: gold, copper, silver, and meteoric iron. An understanding of the malleability of gold, and of the annealing effect of fire, changed jewelry making; new forms were found. Gold was no longer a piece of stone but a material that could be flattened and made very thin. Sheet and foil are the oldest forms of worked gold. The smiths' tools were stone, wood, and horn. 212 pp. Englisch.

Buch. Condición: Neu. Neuware -This book is for both specialist and generalist. For Information Technology (IT) and Educational Management (EM) researchers, it brings together the latest information and analysis of ITEM projects in eleven countries. But the issues raised by this collection of papers are so important for schools, school systems and the future of education that it is essential reading not only for researchers but also for teachers, administrators and all concerned with the planning and governance of our education systems. New technologies may improve our lives in two ways: by enabling us to do things better (accomplishing what we do already more efficiently) and by enabling us to do better things (accomplishing new things that we were not able to do before). Sometimes 'doing things better' merges into 'doing better things'. Thus in the 19th century the coming of the railway enabled our forbears to accomplish their existing journies in less time and in greater comfort. But it also opened up the prospect of new journies to more distant places, and led ultimately to far-reaching changes in lifestyles in new, commuter settlements far from the old city centres. So it is in the present day with Information Technology in Educational Management. Some of the papers in this volume focus on specialist tasks, for example how to develop a computer-based decision-support system to help those drawing up school timetables. Others address situations in which the power of the technology offers us the potential to change radically what we do.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 212 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -This volume gathers refereed papers presented at the 1994 UCLA conference on 'La tent Variable Modeling and Application to Causality. ' The meeting was organized by the UCLA Interdivisional Program in Statistics with the purpose of bringing together a group of people who have done recent advanced work in this field. The papers in this volume are representative of a wide variety of disciplines in which the use of latent variable models is rapidly growing. The volume is divided into two broad sections. The first section covers Path Models and Causal Reasoning and the papers are innovations from contributors in disciplines not traditionally associated with behavioural sciences, (e. g. computer science with Judea Pearl and public health with James Robins). Also in this section are contri butions by Rod McDonald and Michael Sobel who have a more traditional approach to causal inference, generating from problems in behavioural sciences. The second section encompasses new approaches to questions of model selection with emphasis on factor analysis and time varying systems. Amemiya uses nonlinear factor analysis which has a higher order of complexity associated with the identifiability condi tions. Muthen studies longitudinal hierarchichal models with latent variables and treats the time vector as a variable rather than a level of hierarchy. Deleeuw extends exploratory factor analysis models by including time as a variable and allowing for discrete and ordi nal latent variables. Arminger looks at autoregressive structures and Bock treats factor analysis models for categorical data.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 296 pp. Englisch.

Buch. Condición: Neu. Neuware -We have inserted, in this edition, an extra chapter (Chapter X) entitled 'Some Applications and Recent Developments.' The first section of this chapter describes how homological algebra arose by abstraction from algebraic topology and how it has contributed to the knowledge of topology. The other four sections describe applications of the methods and results of homological algebra to other parts of algebra. Most of the material presented in these four sections was not available when this text was first published. Naturally, the treatments in these five sections are somewhat cursory, the intention being to give the flavor of the homo logical methods rather than the details of the arguments and results. We would like to express our appreciation of help received in writing Chapter X; in particular, to Ross Geoghegan and Peter Kropholler (Section 3), and to Jacques Thevenaz (Sections 4 and 5). The only other changes consist of the correction of small errors and, of course, the enlargement of the Index. Peter Hilton Binghamton, New York, USA Urs Stammbach Zurich, Switzerland Contents Preface to the Second Edition vii Introduction. . I. Modules.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 384 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -We have tried to design this book for both instructional and reference use, during and after a first course in algebraic topology aimed at users rather than developers; indeed, the book arose from such courses taught by the authors. We start gently, with numerous pictures to illustrate the fundamental ideas and constructions in homotopy theory that are needed in later chapters. A certain amount of redundancy is built in for the reader's convenience: we hope to minimize :fiipping back and forth, and we have provided some appendices for reference. The first three are concerned with background material in algebra, general topology, manifolds, geometry and bundles. Another gives tables of homo topy groups that should prove useful in computations, and the last outlines the use of a computer algebra package for exterior calculus. Our approach has been that whenever a construction from a proof is needed, we have explicitly noted and referenced this. In general, wehavenot given a proof unless it yields something useful for computations. As always, the only way to un derstand mathematics is to do it and use it. To encourage this, Ex denotes either an example or an exercise. The choice is usually up to you the reader, depending on the amount of work you wish to do; however, some are explicitly stated as ( unanswered) questions. In such cases, our implicit claim is that you will greatly benefit from at least thinking about how to answer them.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 424 pp. Englisch.

Buch. Condición: Neu. Neuware - Managing Change in the Postal and Delivery Industries brings together practitioners, postal administrators, the express industry, regulators, economists and lawyers to examine the important policy and regulatory issues facing the postal and delivery industries. This volume reviews such topics as international postal policy, the universal service obligation, regulation and competition, entry and the role of scale and scope economics, cost analysis in postal services, and service standards. This book provides a unique perspective on the problems facing postal and delivery networks.

Buch. Condición: Neu. Neuware -This text is concerned with Bayesian learning, inference and forecasting in dynamic environments. We describe the structure and theory of classes of dynamic models and their uses in forecasting and time series analysis. The principles, models and methods of Bayesian forecasting and time - ries analysis have been developed extensively during the last thirty years. Thisdevelopmenthasinvolvedthoroughinvestigationofmathematicaland statistical aspects of forecasting models and related techniques. With this has come experience with applications in a variety of areas in commercial, industrial, scienti c, and socio-economic elds. Much of the technical - velopment has been driven by the needs of forecasting practitioners and applied researchers. As a result, there now exists a relatively complete statistical and mathematical framework, presented and illustrated here. In writing and revising this book, our primary goals have been to present a reasonably comprehensive view of Bayesian ideas and methods in m- elling and forecasting, particularly to provide a solid reference source for advanced university students and research workers.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 700 pp. Englisch.

Buch. Condición: Neu. Neuware -Global competitiveness has always been a hotly debated issue, promoting differing opinions among economists, management strategists, business leaders, and policy analysts and consultants. Global Economic Competition provides a broad framework to compare the United States economy with 23 other global economies. This is done by presenting empirical evidence in a series of comparative analyses of economic competition using data pertaining to specific countries, industries and companies. In this volume, the electronics industries are used to illustrate an ongoing economic warfare among competing regions, nations, and cluster companies across the electronic technology chain.Employing the latest empirical data to evaluate the competitiveness of the US economy and its electronic industries and companies in the 1980s and early 1990s, Global Economic Competition will be of interest not only to those who study economics, management science and international trade, but also to policy makers and business leaders.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 440 pp. Englisch.

Buch. Condición: Neu. Neuware -This book describes the latest Russian research covering the structure and algorithmic properties of Boolean algebras from the algebraic and model-theoretic points of view. A significantly revised version of the author's Countable Boolean Algebras (Nauka, Novosibirsk, 1989), the text presents new results as well as a selection of open questions on Boolean algebras. Other current features include discussions of the Kottonen algebras in enrichments by ideals and automorphisms, and the properties of the automorphism groups.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 340 pp. Englisch.

Buch. Condición: Neu. Neuware -Demand side management (DSM) is one of the most topical issues in regulating electric utilities, both in the United States and internationally. What is DSM It consists of various measures at the level of demand (households, commerce, industry, others), which are at least partially financed by electric utilities and which should either conserve energy or reduce the peak load. The practice of DSM originates from The Public Utility Regulatory Policy Act of 1978 (PURPA) that provided the political and legal framework to set energy conservation as a national goal, which encouraged regulatory commissions to initiate utility conservation programs; see e.g., Nowell-Tschirhart (1990) and Fox-Penner (1990). Moreover, integrated resource planning, which must account for DSM on a level playing field with supply, is written into the 1992 Energy Policy Act as the U.S. Government's preferred method of electric power planning. Although PURPA set energy conservation as a national priority, its implementation was left to the states with the consequence of considerable differences concerning efforts and rules. By 1993 16 states had already implemented integrated resource planning, 9 were in the process of doing so and further 9 considered implementation, (EPRI 1993b). Due to the Clean Air Act of 1990, 24 states are considering to include external costs in integrated resource planning.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 224 pp. Englisch.

Buch. Condición: Neu. Neuware -For the first time in power electronics, this comprehensive treatment of switch-mode DC/DC converter designs addresses many analytical closed form equations such as duty cycle prediction, output regulation, output ripple, control loop-gain, and steady state time-domain waveform. Each of these equations are given various topologists and configurations, including forward, flyback, and boost converters. Pulse Width Modulated DC/DC Converters begins with a detailed approach to the quiescent operating locus of a power plant under open-loop. The reader is then led through other supporting circuits once again in the quiescent condition. These exercises result in the close-loop formulations of the subject system, providing designers with the ability to study the sensitivities of a system against disturbances. With the quiescent conditions well established, the book then guides the reader further into the territories of system stability where small signal behaviors are explored. Finally, some important large signal time-domain studies cap the treatment. Some distinctive features of this book include: \*detailed coverage of dynamic close-loop converter simulations using only personal computer and modern mathematical software \*Steady-state, time-domain analysis based on the concept of continuity of states Voltage-mode and current-mode control techniques and their differences of merits A detailed description on setting up different equations for DC/DC converters'simulation using only PCSpringer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 252 pp. Englisch.

Buch. Condición: Neu. Neuware -This volume offers comprehensive treatment of the latest developments in critical systems thinking and practice. The book features contributions by researchers at the prestigious Centre for Systems Studies at the University of Hull, England. The emphasis is on rigorous analysis of the wide range of approaches to problem solving reported in the research literature. This work will enhance the studies of researchers and students in the areas of systems problem solving, action research, management science, and operational research.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 320 pp. Englisch.

Buch. Condición: Neu. Neuware -Extremely diverse and complicated bacterial and protozoan populations inhabit the rumen and intestinal tract of animals, and there is a delicate balance among the individual populations within this complex microbial community. This authoritative edited volume, the first in a two-volume set, reviews the gut environment and the fermentations taking place in animal digestive tracts. It is an essential source of reference for microbial ecologists and physiologists, medical microbiologists and gastroenterologists, biochemists, nutritionists, veterinarians and animal scientists, and wildlife ecologists.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 672 pp. Englisch.

Buch. Condición: Neu. Neuware - From the President of the Research Society on Alcoholism On behalf of the Research Society on Alcoholism, I am pleased to introduce this thirteenth volume of Recent Developments in Alcoholism about alcohol and violence. Current concepts are presented in well-organized sections that - cus on epidemiology, neurobiology, psychology, and family issues. It is - coming increasingly clear that age, gender, socioeconomic circumstances, and genetics affect aggressive behavior and vulnerability to alcoholism. This v- ume contains up-to-date discussions of these issues. Indeed, the information presented here will help all alcohol researchers to identify biological and social factors that contribute to the comorbidity of alcoholism and aggression. The editors and associate editors should be congratulated for bringing toge- er such important information. This volume will be a valuable resource for investigators and therapists alike. Ivan Diamond M. D. , Ph. D. President, Research Society on Alcoholism From the President of the American Society of Addiction Medicine The American Society of Addiction Medicine is honored to continue its - sponsorship with the Research Society on Alcoholism of Recent Developmen ts in Alcoholism. The topic of alcohol and violence is a particularly timely one, given the growing number of studies that are examining the relationship between the two. These studies are consistent with the hypothesis that al- hol can increase aggression and contribute to both domestic and criminal violence. Intoxicating blood levels of alcohol have been found to be especially prevalent in those injured in fights and assaults.

Buch. Condición: Neu. Neuware - Numerical software is central to our computerized society. It is used to control aeroplanes and bridges, operate manufacturing lines, control power plants and refineries, and analyse financial markets. Such software must be accurate, reliable, robust, efficient, easy to use, maintainable and adaptable. Quality assessment and control of numerical software is still not well understood. Although measurement is a key element, it remains difficult to assess many components of software quality and to evaluate the trade-offs between them. Fortunately, as numerical software is built upon a long established foundation of mathematical and computational knowledge, there is great potential for dramatic breakthroughs. This volume will address enabling techniques and tools such as benchmarks, testing methodologies, quality standards, metrics, and accuracy control mechanisms, and their application to software for differential equations, linear algebra, data analysis, as well as the evaluation of integrals, derivatives and elementary and special functions.

Buch. Condición: Neu. Neuware - The purpose of this book is to discuss, in depth, the current state of research and practice in database security, to enable readers to expand their knowledge. The book brings together contributions from experts in the field throughout the world. Database security is still a key topic in mist businesses and in the public sector, having implications for the whole of society.

Buch. Condición: Neu. Neuware - Control theory methods in economics have historically developed over three phases. The first involved basically the feedback control rules in a deterministic framework which were applied in macrodynamic models for analyzing stabilization policies. The second phase raised the issues of various types of inconsistencies in deterministic optimal control models due to changing information and other aspects of stochasticity. Rational expectations models have been extensively used in this plan to resolve some of the inconsistency problems. The third phase has recently focused on the various aspects of adaptive control. where stochasticity and information adaptivity are introduced in diverse ways e.g .- risk adjustment and risk sensitivity of optimal control, recursive updating rules via Kalman filtering and weighted recursive least squares and variable structure control methods in nonlinear framework. Problems of efficient econometric estimation of optimal control models have now acquired significant importance. This monograph provides an integrated view of control theory methods, synthesizing the three phases from feedback control to stochastic control and from stochastic control to adaptive control. Aspects of econometric estimation are strongly emphasized here, since these are very important in empirical applications in economics.

Buch. Condición: Neu. Neuware - Nitrates remain among the most commonly used therapeutic agents in cardiology. That they can re lieve pain in angina pectoris has been known at least since 1867, when Lauder Brunton described their clinical use. Now, almost 130 years later, we are constantly learning more about their optimal use in anginal syndromes. For example, there is no doubt that nitrate tolerance occurs, but equally no doubt that certain drug dosages help to attenuate such toler ance. Thus, our understanding of nitrate tolerance has been taken further by the advent of new nitrate preparations and by studies at a basic science level. The current intense interest in nitrates has been rekindled by the growing emphasis on the role of the endothelium in the production of nitric oxide, a basic cardiovascular regulator. If nitric oxide is vasodilator and protects the vascular endothelium, then nitrates should also have similar properties. Hence this book starts off with the role of the endothelium and ni trates in vasodilation. Next, the mechanisms of ac tion of nitrates are considered with emphasis on the role of cyclic GMP. The chief limitation to the use of nitrates lies in nitrate tolerance. After carefully looking at all the evidence, the authors of the third chapter conclude that the mechanism is likely to be multifactorial. The mechanism responsible for the tolerance still remains unknown. In vitro tolerance may be due to enhanced production of vascular superoxide [1].

Buch. Condición: Neu. Neuware - Computational Issues in High Performance Software for Nonlinear Research brings together in one place important contributions and up-to-date research results in this important area. Computational Issues in High Performance Software for Nonlinear Research serves as an excellent reference, providing insight into some of the most important research issues in the field.

Buch. Condición: Neu. Neuware - This thoroughly revised and updated three volume set continues to be the standard reference in the field, providing the latest in microelectronics design methods, modeling tools, simulation techniques, and manufacturing procedures. Unlike reference books that focus only on a few aspects of microelectronics packaging, these outstanding volumes discuss state-of-the-art packages that meet the power, cooling, protection, and interconnection requirements of increasingly dense and fast microcircuitry. Providing an excellent balance of theory and practical applications, this dynamic compilation features step-by-step examples and vital technical data, simplifying each phase of package design and production. In addition, the volumes contain over 2000 references, 900 figures, and 250 tables.Part I: Technology Drivers covers the driving force of microelectronics packaging - electrical, thermal, and reliability. It introduces the technology developer to aspects of manufacturing that must be considered during product development.Part II: Semiconductor Packaging discusses the interconnection of the IC chip to the first level of packaging and all first level packages. Electrical test, sealing, and encapsulation technologies are also covered in detail.Part III: Subsystem Packaging explores board level packaging as well as connectors, cables, and optical packaging.

Buch. Condición: Neu. Neuware - This state-of-the-art text explores developments in geometric modeling, product modeling and their applications. In particular, it looks at the means by which product geometry emerges from the conceptual stages of design, and the use of geometric reasoning for applications downstream of design, including manufacture ands assembly. Much existing design research is either totally geometry based or totally non-geometric, and the interface between the two areas is of intense interest to industry, as well as being crucial for the successful development of integrated systems for design and manufacture. This interface is currently not well understood and the book makes a significant contribution towards its understanding. This book is essential reading for technical managers and research and development engineers.

Buch. Condición: Neu. Neuware - Finite Fields are fundamental structures of Discrete Mathematics. They serve as basic data structures in pure disciplines like Finite Geometries and Combinatorics, and also have aroused much interest in applied disciplines like Coding Theory and Cryptography. A look at the topics of the proceed ings volume of the Third International Conference on Finite Fields and Their Applications (Glasgow, 1995) (see [18]), or at the list of references in I. E. Shparlinski's book [47] (a recent extensive survey on the Theory of Finite Fields with particular emphasis on computational aspects), shows that the area of Finite Fields goes through a tremendous development. The central topic of the present text is the famous Normal Basis Theo rem, a classical result from field theory, stating that in every finite dimen sional Galois extension E over F there exists an element w whose conjugates under the Galois group of E over F form an F-basis of E (i. e. , a normal basis of E over F; w is called free in E over F). For finite fields, the Nor mal Basis Theorem has first been proved by K. Hensel [19] in 1888. Since normal bases in finite fields in the last two decades have been proved to be very useful for doing arithmetic computations, at present, the algorithmic and explicit construction of (particular) such bases has become one of the major research topics in Finite Field Theory.

Buch. Condición: Neu. Neuware -The nature .and diversity of presentations at the conference on: 'Bee Products: Prop erties, Applications and Apitherapy' held at Tel-Aviv on May 26--30, 1996, emphasize the increasing interest of physicians, practitioners, scientists, herbalists, dieticians, cosmeti cians, microbiologists, and beekeepers in different facets of bee products. This volume consists of a selection of 31 contributions presented at the conference and which provide information on the present status of our knowledge in this area. In spite of their diversity, they reflect the mainstream of the conference, namely: 'Imported' Prod ucts (honey, pollen and propolis), Exocrine Secretions of Workers (venom, royal jelly). Toxicity and Contaminants, Quality Control, Marketing, Apitherapy, Cosmetics, etc. Since antiquity, honey as well as other bee products were used as food, as a cure for ailments of humans and animals, and as cosmetics. We hope that this volume will contribute to interdisciplinary studies on chemical composition, pharmacological effects, nutrition, and other aspects of bee products. Critical and unbiased experimental research may unravel the yet unknown composition and mode of action of bee products and elucidate many unanswered questions. The noteworthy features of this conference were the participants from all parts of the world and of different cultural backgrounds, who shared their keen interest and curios ity regarding honey bees and their products. We thank all of them for their personal con tribution to the success of this conference.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 288 pp. Englisch.

Buch. Condición: Neu. Neuware -Although the writings in this volume were composed over 60 years ago, most of the conceptualizations offered are wholly current and contemporary.Everything we teach today in this area is here.Exceedingly valuable. The reading will not be easy, but it certainly will be worthwhile.' Contemporary Psychology, from a review of Volume 2 All academic libraries, even those in two-year colleges, should add these volumes to their collections.' Choice, February 1998 Volume 3 reveals Vygotsky's powerful philosophical vision far more richly than previously translated materials.The Collected Works in English are particularly valuable because a broad and honest reading of Vygotsky challenges common assumptions about psychology. By building on Vygotsky's more promising insights, psychology might have a better chance of overcoming the divisions it still faces.' American Scientist, May - June, 1998Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 444 pp. Englisch.