springer springer jun 1987 (187 resultados)

Buch. Condición: Neu. Neuware - Approach your problems from the right end It isn't that they can't see the solution. It is and begin with the answers. Then one day, that they can't see the problem. perhaps you will find the final question. G. K. Chesterton. The Scandal of Father 'The Hermit Oad in Crane Feathers' in R. Brown 'The point of a Pin'. van Gulik's The Chinese Maze Murders. Growing specialization and diversification have brought a host of monographs and textbooks on increasingly specialized topics. However, the 'tree' of knowledge of mathematics and related fields does not grow only by putting forth new branches. It also happens, quite often in fact, that branches which were thought to be completely disparate are suddenly seen to be related. Further, the kind and level of sophistication of mathematics applied in various sciences has changed drastically in recent years: measure theory is used (non-trivially) in regional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical programming profit from homotopy theory; Lie algebras are relevant to filtering; and prediction and electrical engineering can use Stein spaces. And in addition to this there are such new emerging subdisciplines as 'experimental mathematics', 'CFD', 'completely integrable systems', 'chaos, synergetics and large-scale order', which are almost impossible to fit into the existing classification schemes. They draw upon widely different sections of mathematics.

Buch. Condición: Neu. Neuware - Section 1: Echinococcosis - Hydatidosis.- Changing concepts in the microecology, macroecology and epidemiology of hydatid disease.- The fertility of hydatid cysts in food animals in Greece.- A failure to infect dogs with Echinococcus granulosus protoscoleces of human origin.- Experimental infection of sheep and monkeys with the camel strain of Echinococcus granulosus.- Characterization of the hydatid disease organism, Echinococcus granulosus from Kenya using cloned DNA markers.- Kinetics of molecular transfer across the tegument of protoscoleces and hydatid cysts of Echinococcus granulosus and the relevance of these studies to drug targeting.- Diagnosis of ovine hydatidosis by Immunoelectrophoresis.- Characterisation of Echinococcus granulosus proteins and antigens from hydatid cyst fluid.- Existence of an urban cycle of Echinococcus granulosus in Central Tunisia.- Echinococcosis eradication in Cyprus.- Section 2: Taeniasis - Cysticercosis.- Taeniasis: the tantalizing target.- Observations on possible strain differences in Taenia saqinata.- Immunoprophylaxis of Taenia saqinata cysticercosis.- An important focus of porcine and human cysticercosis in West Cameroon.- Cysticercus fasciolaris in mice: a laboratory model for selecting new drug on cysticercosis.- Large-scale use of chemotherapy of taeniasis as a control measure for T. solium infections.- Section 3: Trematode Zoonoses.- Zoonotic trematodiasis in South-east and Far-east Asian countries.- Observations on human and animal schistosomiasis in Senegal.- Occurrence of human lung fluke infection in an endemic area in Liberia.- Section 4: Larva migrans and other nematode zoonoses.- Larva migrans in perspective.- Immunological studies on Ascaris suum infections in mice.- Toxocara vitulorum: a possible agent of larvamigrans in humans .- Antigenic and biochemical analysis of the E.S. molecules of Toxocara canis infective larvae.- Ocular toxocariasis: role of IgE in the pathogenesis of the syndrome and diagnostic implications.- Serological arguments for multiple etiology of visceral larva migrans.- Experimental Trichinella spiralis infection in two horses.- Intestinal mast cells: possible regulation and their function in the gut of Trichinella spiralis infected small rodents.- Variable levels of host immunoglobulin on microfilariae of Brugia pahanoi isolated from the blood of cats.- Mammomonogamosis.- Frequency of symptomatic human oesophagostomiasis (helminthoma) in Northern Togo.- Index of Subjects.

Buch. Condición: Neu. Neuware - Significant advances in the field of optimal control have been made over the past few decades. These advances have been well documented in numerous fine publications, and have motivated a number of innovations in electric power system engineering, but they have not yet been collected in book form. Our purpose in writing this book is to provide a description of some of the applications of optimal control techniques to practical power system problems. The book is designed for advanced undergraduate courses in electric power systems, as well as graduate courses in electrical engineering, applied mathematics, and industrial engineering. It is also intended as a self-study aid for practicing personnel involved in the planning and operation of electric power systems for utilities, manufacturers, and consulting and government regulatory agencies. The book consists of seven chapters. It begins with an introductory chapter that briefly reviews the history of optimal control and its power system applications and also provides an outline of the text. The second chapter is entitled 'Some Optimal Control Techniques'; its intent is to introduce fundamental concepts of optimal control theory that are relevant to the applications treated in the following chapters. Emphasis is given to clear, methodical development rather than rigorous formal proofs. Topics discussed include variational calculus, Pontryagin's maximum principle, and geometric methods employing functional analysis. A number of solved examples are included to illustrate the techniques.

Buch. Condición: Neu. Neuware - Methods to eonstruet images of an objeet from 'projeetions' of x-rays, ultrasound or eleetromagnetie waves have found wide applieations in eleetron mieroseopy, diagnostie medicine and radio astronomy. Projeetions are measurable quantities that are a funetiona- usually involving a line integral - of physieal properties of an objeet. Convolutional methods, or iterative algorithms to solve large systems of linear equations are used to reeonstruet the objeet. In prineiple, there is no reasan why similar image reeonstruetions ean not be made with seismie waves. In praetiee, seismic tomography meets with a number of diffieulties, and it is not until the last deeade that imaging of transmitted seismie waves has found applicatian in the Earth sciences. The most important differenee between global seismie tomography and mare eonventional applieations in the laboratory is the faet that the seismologist is eonfronted with the lack of anything resembling a well-eontrolled experimental set-up. Apart from a few nuelear tests, it is not in our power to locate or time seismie events. Apart from a few seabattom seismographs, our sensors are located on land -and even there the availability of data depends on eultural and politieal factors. Even in exploratian seismics, praetieal faetors such as the east of an experiment put strong limitations on the eompleteness of the data set.

Buch. Condición: Neu. Neuware - The fourth international rotifer symposium was Wednesday afternoon a tour of Edinburgh, includ held in Edinburgh, Scotland, August 18 - 25, 1985, ing a visit to the Palace of Holyrood, was arranged. hosted by the Institute of Terrestrial Ecology. This This was followed by an evening banquet with meeting continued the tradition of holding rotifer traditional Scottish entertainment. On Thursday symposia at three-year intervals. The first an evening most participants attended a fireworks dis nouncement of the fourth meeting was circulated at play which was part of the Edinburgh Festival. Fi the end of 1983 to almost 300 people whose names nally, an excursion to Loch Lomond and the Tros appeared on the mailing list of the international sach hills was arranged for the Saturday after the newsletter, Rotifer News. In total, 68 people from meeting. 23 countries attended the meeting. It is interesting The organisers would like to thank Mr. C. J. to note that, of these 68 participants, 21 had at Place and colleagues at the Institute of Terrestrial tended the first meeting, held in Linz, Austria, Ecology for their invaluable help in organising the 1976, and 13 had attended all three previous meet meeting and preparing the symposium volume for ings. publication. We are also grateful for financial sup As in previous symposia, some research topics port from the Royal Society, the British Council were identified in advance of the meeting as being and British Petroleum (Scotland).

Buch. Condición: Neu. Neuware - This treatise commemorates the 32nd anniversary of the first successful allogenic kidney transplant in a human being and the beginning of a con tinuing challenge for well over a generation of anesthesiologists. If compari sons can be permitted, this epoch-making event can be ranked with the first pulmonary lobectomy and subsequently the initial ligation of a patent ductus arteriosus in the late 1930s when thoracic and cardiac surgery began. Was it merely a coincidence that brought these events to the fore so close upon one another after many years of ideation and frustration Not so, according to Lewis Thomas, for this was the time of medicine's second revolution-its transformation from an empirical art into a powerfully effective science. The remote Galenic conception of disease with its emphasis on disturbed body humors was about to be supplanted by effective therapeutics, as signified by the introduction of the sulfonamides and antibiotics for the specific treatment of infection. Anesthesiology had been dormant up to that era, still relying upon a few agents, more or less utilized from the beginning, and purveyed by a handful of specialists who had not yet begun to ask the scientific questions necessary for their maturation into a bona fide discipline. However, anesthesiology was in evitably caught in the ferment, for as Peter Caws observed, 'It serves to re mind us that the development of science is a step-wise process: nobody starts from scratch and nobody gets very far ahead of the rest.

Buch. Condición: Neu. Neuware - This book contains the contributions to a workshop on stress in farm animals held on April 17-18,1986 at the Pietersberg Con ference Centre Oosterbeek. The workshop was financed by the Commis sion of the European Communities from its budget for the coordina tion of Community Agricultural Research and the Agricultural Uni versity of Wageningen (The Netherlands). Its aim was to bring together experts from different disciplines all having in common that in one way or another they were involved in stress research. Such a multidisciplinary encounter should not only provide an interesting description of present day knowledge on stress, but also promote a more integrated view on stress phenomena as they occur in higher vertebrates. In the course of this workshop the following fields of research were related to stress: endocrinology, immunology, pathology, neurobiology, ethology and theoretical bio logy. Each of these relationships was introduce& by one speaker presenting a concise state of the art. The same relationship was elaborated by a second speaker implementing the available knowledge as far as possible to the farm animal situation. Therefore in this book each discipline is represented by a duo and introduced by some integrating remarks.

Buch. Condición: Neu. Neuware - The idea for an international symposium on the interstellar medium was first discussed at the University of Wyoming during the summer of 1984. It was obvious that the outstanding natural beauty of the Teton mountain range in northwestern Wyoming must be matched by a meeting with the broadest appeal to the astronomical community. If the meeting was to produce a book, it must likewise be an important contribution to the astronomical literature. It was for these reasons that early in the discussions, it was decided that the University should host a 'school'. with the invited speakers presenting tutorials on a broad range of topics involving the interstellar medium. The symposium proceedings would then be a compilation of the written versions of these presentations. It has been nearly a decade since Lyman Spitzer published his classic text on the interstellar medium and we felt the need for a school and book that would focus on the recent developments in our understanding of the inter stellar medium. Thus, we view this two-volume set as an adjunct text to Spitzer's book.

Taschenbuch. Condición: Neu. Neuware - The idea for an international symposium on the interstellar medium was first discussed at the University of Wyoming during the summer of 1984. It was obvious that the outstanding natural beauty of the Teton mountain range in northwestern Wyoming must be matched by a meeting with the broadest appeal to the astronomical community. If the meeting was to produce a book, it must likewise be an important contribution to the astronomical literature. It was for these reasons that early in the discussions, it was decided that the University should host a 'school'. with the invited speakers presenting tutorials on a broad range of topics involving the interstellar medium. The symposium proceedings would then be a compilation of the written versions of these presentations. It has been nearly a decade since Lyman Spitzer published his classic text on the interstellar medium and we felt the need for a school and book that would focus on the recent developments in our understanding of the inter stellar medium. Thus, we view this two-volume set as an adjunct text to Spitzer's book.

Buch. Condición: Neu. Neuware - This volume contains the lectures presented at the NATO ADVANCED STUDY INSTITUTE that took place at Newark, Delaware, U. S. A. , July 14-23, 1985. The objective of this meeting was to present and discuss selected topics associated with transport phenomena in porous media. By their very nature, porous media and phenomena of transport of extensive quantities that take place in them, are very complex. The solid matrix may be rigid, or deformable (elastically, or following some other constitutive relation), the void space may be occupied by one or more fluid phases. Each fluid phase may be composed of more than one component, with the various components capable of interacting among themselves and/or with the solid matrix. The transport process may be isothermal or non-isothermal, with or without phase changes. Porous medium domains in which extensive quantities, such as mass of a fluid phase, component of a fluid phase, or heat of the porous medium as a whole, are being transported occur in the practice in a variety of disciplines.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Recently there has been a great deal of interest in the theory of orthogonal polynomials. The number of books treating the subject, however, is limited. This monograph brings together some results involving the asymptotic behaviour of orthogonal polynomials when the degree tends to infinity, assuming only a basic knowledge of real and complex analysis. An extensive treatment, starting with special knowledge of the orthogonality measure, is given for orthogonal polynomials on a compact set and on an unbounded set. Another possible approach is to start from properties of the coefficients in the three-term recurrence relation for orthogonal polynomials. This is done using the methods of (discrete) scattering theory. A new method, based on limit theorems in probability theory, to obtain asymptotic formulas for some polynomials is also given. Various consequences of all the results are described and applications are given ranging from random matrices and birth-death processes to discrete Schrödinger operators, illustrating the close interaction with different branches of applied mathematics. 216 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The importance of CAD to electronics technology Computer-aided design (CAD) is one way of coping with the problem of how to design and build very complex systems. This problem is particularly acute in electronics technology. Designs are now (1984) said to be design-limited, rather than technology-limited. It can take months to generate a design for a chip, so that it might be obsolete before it can be manufactured. Manual design of large-scale integration (LSI) chips (circa 10,000 gates) is almost impossible. However, using current technology it is possible to produce chips having 250,000 gates. It is understandable, therefore, that there is great interest in improving existing CAD systems. Designers of CAD systems are concerned with formalizing and automating as much of the design task as possible. Automating design of any kind has long been acknowledged as a project fraught with intractable problems. A human designer has to have an understanding of the nature of the materials used in manufacture, a knowledge of common problems and well-tried solutions, and above all, creativity in producing new designs. Understanding, knowledge and creativity are three properties even the most artificially intelligent of computer programs have been entirely lacking in until very recently. Some people would deny computers these qualities entirely, on philosophical grounds (eg Dreyfus 1979; Searle 1981). There are few theories in cognitive psychology which can help. 120 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume contains the papers presented, and subsequently submitted for publication, at the 5th Logic Programming Conference, held June 23-26, 1986 in Tokyo. Topics covered include Prolog machine architecture, Prolog processors, variations of Prolog language, and applications of Prolog to natural language understanding, and expert systems. Most of the works reported in the volume are related to the Japanese Fifth Generation Computer Project allowing readers to compare results from this project with those from similar projects currently being conducted in other countries. 192 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book deals with microbial mats, stromatolites and coated grains. Recent and ancient stromatolitic ecosystems are described in peritidal environments, including siliciclastic, carbonaceous and evaporite-dominated back-barrier systems. Various relevant categories were distinguished: - mat-forming microbiota - environmental conditions controlling mat types and lithology - bioturbation and grazing. Recent and ancient microbial mat systems show a latitudinal arrangement which can be used for paleoclimatological and paleogeographical reconstructions. This book should be of special interest to sedimentologists, coastal engineers, ecologists, zoologists, salt plant engineers and marine scientists, as well as to students interested in these fields. 196 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -WOPPLOT 86 - Workshop on Parallel Processing: Logic, Organization and Technology - gathered together experts from various fields for a broad overview of current trends in parallel processing. There are contributions from logic (e.g., the connection between time and logic, or non-monotonic reasoning); from organizational structure theory (of great importance for pyramid architecture) and structure representation; from intrinsic parallelism and problem classification; from developments in future technologies (3-D Silicon technology, molecular electronics); and from various applications (pattern storage in adaptive memories, simulation of physical systems). The proceedings show clearly that progress in parallel processing is an interdisciplinary goal; they present a cross section of the state of the art as well as of future trends. Furthermore, some contributions (in particular, those from logic and organization) deserve a broader interest also outside the field of parallel processing. 236 pp. Englisch.

Buch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Polymers, main components of plastics and rubbers, are being discarded in increasing quantities. But this waste can also be considered as 'plastic gold'. Public concern, coupled with the inherent value of the material, means that recycling is imperative. The present book presents a survey of current knowledge in the form of case studies, including current legal and educational issues. Topics covered also include regulation and practice in NATO countries, the economics of recycling, the reprocessing of single polymers and mixtures, and future prospects and strategies. Audience: Vital reading for all polymer scientists, technicians and engineers. 264 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume represents the edited proceedings of the International Symposium on Mathematical Biology held in Kyoto, November 10-15, 1985. The symposium was or ganized by an international committee whose members are: E. Teramoto, M. Yamaguti, S. Amari, S.A. Levin, H. Matsuda, A. Okubo, L.M. Ricciardi, R. Rosen, and L.A. Segel. The symposium included technical sessions with a total of 11 invited papers, 49 contributed papers and a poster session where 40 papers were displayed. These Proceedings consist of selected papers from this symposium. This symposium was the second Kyoto meeting on mathematical topics in biology. The first was held in conjunction with the Sixth International Biophysics Congress in 1978. Since then this field of science has grown enormously, and the number of scientists in the field has rapidly increased. This is also the case in Japan. About 80 young japanese scientists and graduate students participated this time. . The sessions were divided into 4 ; , categories: 1) Mathematical Ecology and Population Biology, 2) Mathematical Theory of Developmental Biology and Morphogenesis, 3) Theoretical Neurosciences, and 4) Cell Kinetics and Other Topics. In every session, there were stimulating and active discussions among the participants. We are convinced that the symposium was highly successful in transmitting scientific information across disciplines and in establishing fruitful contacts among the participants. We owe this success to the cooperation of all participants. 364 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This is an inadvertent book, though it did arise naturally enough from a course I give in theoretical ecology. But I wouldn't have given the course at all if one colleague in my department hadn't left for a leave of absence, while another abruptly resigned. This propelled me to the fore where this teaching responsibility was concerned, one I had never had any intention of discharging. Then it turned out that one of my students was regularly unable to make half the classes. As a result, I began giving him my lecture notes each week. As I knew that someone else would be reading them, I began to write my notes more carefully. Naturally enough, the other students soon began to demand the notes too. Eventually they were indulged. Thus I found myself writing a textbook manuscript. By the next year, the students were handed all their notes in one package at the outset. But these were still just hand-written. Inevitably, the demand that they be typed arose. This I didn't want to do until I found a publisher. As it turned out, Tim Hardwick of Croom Helm was willing to have his firm fill this role, to my great satisfaction. - and his considerable frustration. I have been a desultory author about producing this final text, and can only express my gratitude for his enduring patience over more than 18 months of delays. 220 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The contemporary industrial robot is the focal point of a wide variety of elements in modern technology. It is a collection of parts, some of which act as drives and some of which act as architectural materials that give the robot body strength. This book is a thorough inventory of the technologies involved and the way in which they meet and work together in order to produce a functional robot arm. The authors have striven to describe thoroughly the components that make up robot arms. This gives both the student and the practitioner a complete view of the principles involved in such components and the differences between existing technologies. However, it is not only the student who benefits from this approach but also the potential robot user who, at the moment, may be faced with a bewildering choice of combinations of different types of components in the robots that are available to him. For example, it is difficult for a production manager to appreciate the differences between robots that use direct current motors, stepping motors and pneumatic actuators. The authors have succeeded in structuring the book so that the reader can weigh up the pros and cons of these different techniques at whatever level of depth he requires. Certainly, the book aims to provide as much depth as there is in these topics without assuming a detailed knowledge of specialized areas of engineering. 348 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Towards the end of 1983, the Advisory Council for Applied Research and Development (ACARD) published a report giving the findings of a working group which had been set up to study the factors which inhibited or supported the introduction of advanced manufacturing technology (AMT) in engineering manufacture. Prominent amongst their findings was that, up to that time, 'appraisal of investment in AMT on a short-term financial basis was not entirely adequate' and that 'the conventional approach to financial appraisal techniques, directed towards an early return on capital invested, may be inappropriate'. Today, over three years later, advanced manufacturing technology is more widely recognised and is providing a proven solution to survival and growth for manufacturers. However, many medium-and small-size companies are still finding great difficulty in the evaluation and justification of investment in this vital area. The Institution of Production Engineers therefore set up a special joint working party with The Chartered Institute of Management Accountants to follow up the ACARD report, with the objective of examining the whole area of the justification of investment in advanced manufacturing technology. 76 pp. Englisch.

Buch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -During the last half of the twentieth century, legal philosophy (or legal theory or jurisprudence) has grown significantly. It is no longer the do main of a few isolated scholars in law and philosophy. Hundreds of scho lars from diverse fields attend international meetings on the subject. In some universities, large lecture courses of five hundred students or more study it. The primary aim of the Law and Philosophy Library is to present some of the best original work on legal philosophy from both the Anglo American and European traditions. Not only does it help make some of the best work available to an international audience, but it also en courages increased awareness of, and interaction between, the two major traditions. The primary focus is on full-length scholarly monographs, aIthouogh some eidted volumes of original papers are also included. The Library editors are assisted by an Editorial Advisory Board of inter nationally renowned scholars. 424 pp. Englisch.

Buch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Approach your problems from the right end It isn't that they can't see the solution. It is and begin with the answers. Then one day, that they can't see the problem. perhaps you will find the final question. G. K. Chesterton. The Scandal of Fother 'The Hennit Clad in Crane Feathers' in R. Brown 'The point of a Pin'. van GWs The Chinese More Murders. Growing specialization and diversification have brought a host of monographs and textbooks on increasingly specialized topics. However, the 'tree' of knowledge of mathematics and related fields does not grow only by putting forth new branches. It also happens, quite often in fact, that branches which were thought to be completely disparate are suddenly seen to be related. Further, the kind and level of sophistication of mathematics applied in various sciences has changed drastically in recent years: measure theory is used (non-trivially) in regional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical programming profit from homotopy theory; Lie algebras are relevant to filtering; and prediction and electrical engineering can use Stein spaces. And in addition to this there are such new emerging subdisciplines as 'experimental mathematics', 'CFD', 'completely integrable systems', 'chaos, synergetics and large-scale order', which are almost impossible to fit into the existing classification schemes. They draw upon widely different sections of mathematics. 268 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The aim of these series of volumes 'Advances in Petri Nets' is to present to the general computer science community the most significant recent results with regard to the development in the area. The main source of the papers are the annual European Workshops on Applications and Theory of Petri Nets'; the highest ranked papers from the past workshops are considered for the series, i.e., they are again reviewed and accordingly revised or extended. In addition to the workshop papers, the 'Advances' also present invited papers. The present volume Advances in Petri Nets 1987 covers the 7th 'European Workshop on Applications and Theory of Petri Nets' held in Oxford, Great Britain, in June 1986. It also contains a survey on complexity of problems related to Petri nets written by R.R. Howell and L.E. Rosier. A special feature of this volume is a bibliography on Petri nets, containing more than 2000 entries. 464 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is focused on the performance evaluation of database machines, i.e., special-purpose architectures specifically meant to improve the efficiency of database applications. The topic is of primary interest because of the need to compare these systems among themselves and with traditional database management systems. The book gathers the experience of several European research groups in modeling and analyzing the database machine architectures they have proposed. It deals both with the main methodological issues and with the detailed analysis of some relevant problems. It also includes an extensive annotated bibliography with more than one hundred references and several keys for the access to the literature. 264 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This research monograph deals with nonlinear evolution operators and semigroups generated by dissipative (accretive), possibly multivalued operators, as well as with the application of this theory to partial differential equations. It shows that a large class of PDE's can be studied via the semigroup approach. This theory is not available otherwise in the self-contained form provided by these Notes and moreover a considerable part of the results, proofs and methods are not to be found in other books. The exponential formula of Crandall and Liggett, some simple estimates due to Kobayashi and others, the characterization of compact semigroups due to Brézis, the proof of a fundamental property due to Ursescu and the author and some applications to PDE are of particular interest. Assuming only basic knowledge of functional analysis, the book will be of interest to researchers and graduate students in nonlinear analysis and PDE, and to mathematical physicists. 292 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This supplement presents the papers submitted at the 27th meeting of the European Society of Toxicology, which was organised by the British Toxicology Society and held in Harrogate, England. As evident from the title of this book, the overall theme of the meeting was an exploration of some of the mechanisms of toxicity, as well as some models used in the investigation of toxic action. The topics dealt with can be grouped under four headings. The first of these, on the mechanisms involved in cell injury, was a joint symposium of the European Society of Toxicology and the Society of Toxicology of the United States of America. In the second group, mechanisms in carcinogen risk assessment were discussed. Mechanisms and models of teratogenesis was the subject of the third group of invited papers. Finally, a workshop on safety evaluation of biotechnological products dealt with present and future problems which this new area of technology poses for toxicologists. Short communications on recent studies and developments in toxicological techniques which were presented at the meeting are also included in this volume. 376 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book investigates the problem of translating relational queries into iterative programs using methods and techniques from the areas of functional programming and program transformation. The first part presents two algorithms which generate iterative programs from algebra-based query specifications. While the first algorithm is based on the transformation of recursive programs, the second uses functional expressions to generate the final iterative form. In the second part the same techniques generate efficient programs for the evaluation of aggregate functions in relational database systems. In several steps, programs which perform aggregation after sorting, are transformed into programs which perform aggregation while sorting. The third part then investigates the Lisp-dialect T as a possible implementation language for database systems. The book describes all transformations by transformation rules. The reader can expect a formal treatment of the proposed transformations which provide the basis for proving the correctness of the algorithms and, at the same time, give important insight into the techniques and methods developed for the transformation. Additionally, the high-level, detailed description of the algorithms immediately leads to their implementation and allows their extension to meet new requirements. Overall, the use of transformation rules and transformation methods introduces a new approach to query processing in relational database systems. 148 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Ada\* is unquestionably one of the most significant programming languages to emerge in the last decade. The manner of its inception and support by the US Department of Defense (DoD) ensures that it will be used extensively for the indefinite future in programming large and complex systems. The growing availability of compilers means that many organisations are already committed to using the language for sizable and significant applications. As a perhaps inevitable result of its design goals, Ada is a 'large' language. It has Pascal-like control and type constructs; a mechanism for exception handling; a package structure for information hiding, decomposition and separate compilation; facilities for low-level programming; and a tasking model of concurrency. It is perhaps this last area that has generated most debate, criticism and disagreement. The purpose of this book is to review the tasking model in the light of the extensive analysis and comment which has appeared in the literature. The review is necessarily wide-ranging, including discussion of - Ada as a general purpose concurrent programming language, - Ada as a language for embedded and distributed systems, - implementation issues, with particular reference to distributed systems, - formal semantics, specification and verification, - proposed language modifications. By consolidating this discussion within the confines of a single review, potential users of the tasking facility are enabled to familiarise themselves with all the factors which may impinge upon the performance, reliability and correctness of their software. The book also provides a focus for any debate on modifications to the Ada language, or developments from it. 156 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Recently there has been a great deal of interest in the theory of orthogonal polynomials. The number of books treating the subject, however, is limited. This monograph brings together some results involving the asymptotic behaviour of orthogonal polynomials when the degree tends to infinity, assuming only a basic knowledge of real and complex analysis. An extensive treatment, starting with special knowledge of the orthogonality measure, is given for orthogonal polynomials on a compact set and on an unbounded set. Another possible approach is to start from properties of the coefficients in the three-term recurrence relation for orthogonal polynomials. This is done using the methods of (discrete) scattering theory. A new method, based on limit theorems in probability theory, to obtain asymptotic formulas for some polynomials is also given. Various consequences of all the results are described and applications are given ranging from random matrices and birth-death processes to discrete Schrödinger operators, illustrating the close interaction with different branches of applied mathematics.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 216 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Symposium was held at the Great Wall Sheraton Hotel in Beijing, China in the period August 25-30, 1986. The decision to concentrate on the observational aspects of modern cosmology was taken in part because this conference has come in a period when there have been several international meetings on one aspect of modern cosmology, namely the early universe and its possible relationship to particle physics. While that approach is extremely exciting, it has the disadvantage that its connection with much of observational cosmology is very indirect. Thus there has been little opportunity to discuss critically the wealth of new data that are now becoming available which bear on the structure and evolution of the Universe but not always on its early history. This Symposium was planned to cover all aspects of observational cosmology, with only comparatively minor excursions into theory. Nearly 200 participants attended from 21 countries. A total of 26 invited papers and 73 contributed papers were given. This meant that everyone worked hard and long from 9 A.M. to about 5:30 P.M. for five of the six days of the conference. In addition to oral contributions, space was made available for poster papers and 56 of these were available for study for the duration of the conference. 884 pp. Englisch.