springer us nov 1994 (66 risultati)

Buch. Condizione: Neu. Neuware - Cooperating Heterogeneous Systems provides an in-depth introduction to the issues and techniques surrounding the integration and control of diverse and independent software components. Organizations increasingly rely upon diverse computer systems to perform a variety of knowledge-based tasks. This presents technical issues of interoperability and integration, as well as philosophical issues of how cooperation and interaction between computational entities is to be realized. Cooperating systems are systems that work together towards a common end. The concepts of cooperation must be realized in technically sound system architectures, having a uniform meta-layer between knowledge sources and the rest of the system. The layer consists of a family of interpreters, one for each knowledge source, and meta-knowledge. A system architecture to integrate and control diverse knowledge sources is presented. The architecture is based on the meta-level properties of the logic programming language Prolog. An implementation of the architecture is described, a Framework for Logic Programming Systems with Distributed Execution (FLiPSiDE). Knowledge-based systems play an important role in any up-to-date arsenal of decision support tools. The tremendous growth of computer communications infrastructure has made distributed computing a viable option, and often a necessity in geographically distributed organizations. It has become clear that to take knowledge-based systems to their next useful level, it is necessary to get independent knowledge-based systems to work together, much as we put together ad hoc work groups in our organizations to tackle complex problems. The book is for scientists and software engineers who have experience in knowledge-based systems and/or logic programming and seek a hands-on introduction to cooperating systems. Researchers investigating autonomous agents, distributed computation, and cooperating systems will find fresh ideas and new perspectives on well-established approaches to control, organization, and cooperation.

Buch. Condizione: Neu. Neuware - Modeling with an Analog Hardware Description Language spells out, in general terms, what modeling with an analog hardware description language (AHDL) adds to the existing field of computer simulation, using specific examples to develop this understanding. The book is divided into three major sections: Fundamentals of Modeling provides an overview of general modeling and simulation concepts that are used in subsequent chapters. These introductory chapters cover topics such as macromodels, behavioral models, primitive device models, modeling hierarchy, top-down design, non-electrical technologies, and the Newton--Raphson iterative simulation technique. These topics are presented to help further the understanding of what is needed to develop models in an AHDL. Model Implementation begins to convey the implementation details of the MAST AHDL. The chapters in this section show how to use the governing equations of several commonly used models, along with equations that are readily available from well-known textbooks and papers. This information is provided in both tutorial and reference fashion, serving as an introduction to the basics of the MAST ADHL. Each chapter builds on the information from preceding chapters in order to demonstrate progressively more complex modeling concepts. This culminates with the diode and MOSFET models given in Chapter 9, which are intended to show the depth of the MAST language and which may be of interest to a more specialized segment of the modeling population. Advanced Applications contains several examples of designs that use models written in the MAST ADHL. Each example makes use of concepts brought up in the first two sections. The main purpose of these chapters is to illustrate the importance of using an AHDL to enhance the power of computer simulations.

Buch. Condizione: Neu. Neuware - Engineers have long been fascinated by how efficient and how fast biological neural networks are capable of performing such complex tasks as recognition. Such networks are capable of recognizing input data from any of the five senses with the necessary accuracy and speed to allow living creatures to survive. Machines which perform such complex tasks as recognition, with similar ac curacy and speed, were difficult to implement until the technological advances of VLSI circuits and systems in the late 1980's. Since then, the field of VLSI Artificial Neural Networks (ANNs) have witnessed an exponential growth and a new engineering discipline was born. Today, many engineering curriculums have included a course or more on the subject at the graduate or senior under graduate levels. Since the pioneering book by Carver Mead; 'Analog VLSI and Neural Sys tems', Addison-Wesley, 1989; there were a number of excellent text and ref erence books on the subject, each dealing with one or two topics. This book attempts to present an integrated approach of a single research team to VLSI ANNs Engineering.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is t~e fifth in aseries of scientific textbooks designed to cover advances in selected research fields from a basic and general view point. The reader is taken carefully but rapidly through the introductory material in order that t~e significance of recent developments can be understood with only limited initial knowledge. The inclusion in the Appendix of the abstracts of many of the more important papers in the field provides further assistance for the non-specialist, and acts as aspringboard to supplementary reading for those who wish to consult the original liter ature. Surface analysis has been the subject of numerous books and review articles, and the fundamental scientific principles of t~e more popular techniques are now reasonably weIl established. This book is concerned with the very powerful techniques of Auger electron and X-ray photoelectron spectroscopy (AES and XPS), with an emphasis on how they may be performed as part of a modern analytical facility. Since the development of AES and XPS in the late 1960s and early 1970s there have been great strides forward in the sensitivities and resolutions of the instrumentation. Simultaneously, these spectroscopies have undergone a veritable explosion, both in their acceptance alongside more routine ana1ytical techniques and in the range of problems and materials to which they are applied. As a result, many researchers in industry and in academia now come into contact with AES and XPS not as specialists, but as users. 172 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The field of discrete event systems has emerged to provide a formal treatment of many of the man-made systems such as manufacturing systems, communica tion networks. automated traffic systems, database management systems, and computer systems that are event-driven, highly complex, and not amenable to the classical treatments based on differential or difference equations. Discrete event systems is a growing field that utilizes many interesting mathematical models and techniques. In this book we focus on a high level treatment of discrete event systems. where the order of events. rather than their occurrence times, is the principal concern. Such treatment is needed to guarantee that the system under study meets desired logical goals. In this framework, dis crete event systems are modeled by formal languages or, equivalently, by state machines. The field of logical discrete event systems is an interdisciplinary field-it in cludes ideas from computer science, control theory, and operations research. Our goal is to bring together in one book the relevant techniques from these fields. This is the first book of this kind, and our hope is that it will be useful to professionals in the area of discrete event systems since most of the material presented has appeared previously only in journals. The book is also designed for a graduate level course on logical discrete event systems. It contains all the necessary background material in formal language theory and lattice the ory. The only prerequisite is some degree of 'mathematical maturity'. 160 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The symposium on 'Worldwide Advances in Communications Networks' which was held on May 14-15, 1992 at GMU was an ambitious attempt to bring together leaders in the communications area to discuss the major issues in this rapidly-changing technology. The symposium was a success and many of the ideas presented at the conference are being implemented. This proceeding contains the majority of the papers presented at the symposium and abstracts of the remainder. The papers may be divided into seven general categories. The first five papers explore some important design issues for high speed networks (gigabit networks). Traffic modelling, quality of service guarantees, switching alternatives, and routing are discussed. The next two papers focus on applications for broadband communications. Weinstein begins by asking, 'ARE THERE ANY APPLICATIONS ' and then proceeds to develop a wide variety of potential uses. Personick concentrates on multimedia applications. The next three papers deal with Personal Communications Services (PCS) and the notion of communicating with anyone, at any time, anywhere. Several of the key technical issues such as CDMA vs TDMA are analyzed in detail. The fourth area is satellite communications. Two papers discuss some of the major changes that are taking place and potential new systems. The next two papers discuss signal coding and digital video. Jayant provides an excellent overview of the impressive capabilities that are available for the compression of speech, audio, image, and video signals. Bellisio concentrates on video encoding. 200 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In 1979, serious research was just beginning on the connections between stratification outcomes and organizations. Data suitable for investigating these connections were scarce, and the general wisdom was that they would remain scarce--since organizational case studies were seen as the only means of gathering linked individual and organizational data. The case study approach does allow one to link the two types of data, but gathering such data on more than a few organizations is prohibitively expensive and difficult, and having only a few organizations limits g- eralizability. To help solve this problem, we developed the idea of a survey of a random sample of several thousand employed individuals, followed by a second survey of their several thousand employing or- nizations. This method, we reasoned, would provide us with a gen- alizable, simple random sample of individuals, coupled with a weighted random sample of organizations (weighted, of course, by size of orga- zation). An added benefit would be that these valuable data could be gathered by a survey organization for the price of two simple surveys. It was not an easy idea to sell. We developed it into a proposal to the National Science Foundation (NSF), and though the reviewers were o- erwise sympathetic, they were almost unanimous in their contention that such a survey would not work because 'obviously' the great maj- ity of respondents would refuse to reveal exactly who their employers were. 260 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The first six chapters and Appendix 1 of this book appeared in Japanese in a book of the same title 15years aga (Jikkyo, Tokyo, 1980).At the request of some people who do not wish to learn Japanese, I decided to rewrite my old work in English. This time, I added a chapter on the arithmetic of quadratic maps (Chapter 7) and Appendix 2, A Short Survey of Subsequent Research on Congruent Numbers, by M. Kida. Some 20 years ago, while rifling through the pages of Selecta Heinz Hopj (Springer, 1964), I noticed a system of three quadratic forms in four variables with coefficientsin Z that yields the map of the 3-sphere to the 2-sphere with the Hopf invariant r =1 (cf. Selecta, p. 52). Immediately I feit that one aspect of classical and modern number theory, including quadratic forms (Pythagoras, Fermat, Euler, and Gauss) and space elliptic curves as intersection of quadratic surfaces (Fibonacci, Fermat, and Euler), could be considered as the number theory of quadratic maps-especially of those maps sending the n-sphere to the m-sphere, i.e., the generalized Hopf maps. Having these in mind, I deliveredseverallectures at The Johns Hopkins University (Topics in Number Theory, 1973-1974, 1975-1976, 1978-1979, and 1979-1980). These lectures necessarily contained the following three basic areas of mathematics: v vi Preface Theta Simple Functions Aigebras Elliptic Curves Number Theory Figure P.l. 364 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In this unique volume, twelve pioneers of historical archaeology offer reminiscences of the early part of their respective careers, circa 1920 to 1940. Each scholar had to overcome numerous biases held by historians and archaeologists-thus each chapter documents a step in the field's march from a marginal to a mainstream discipline. The book makes for facinating reading for archaeologists, anthropologists, and historians of science, and reminds us of the words of C.H. Fairbanks: ''what is past is prelude; study the past. '' 248 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The nosological roots of post-traumatic stress disorder (PTSD) may be traced back to th~American Psychiatric Association's DSM-I entry of gross stress reaction, as published in 1952. Yet the origins of the current enthusi asm with regard to post-traumatic stress can be traced back to 1980, which marked the emergence of the term post-traumatic stress disorder in the DSM III. This reflected the American Psychiatric Association's acknowledgment of post-traumatic stress as a discrete, phenomenologically unique, and reli able psychopathological entity at a time in American history when such recognition had important social, political, and psychiatric implications. Clearly, prior to DSM-I the lack of a generally accepted terminology did little to augment the disabling effects that psychological traumatization could engender. Nor did the subsequent provision of an official diagnostic label alone render substantial ameliorative qualities. Nevertheless, the post Vietnam DSM-III recognition of PTSD did herald a dramatic increase in research and clinical discovery. The American Red Cross acknowledged the need to establish disaster mental health services, the American Psychological Association urged its members to form disaster mental health networks, and the Veterans Administration established a national study center for PTSD. 444 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -This volume of Advances in Clinical Child Psychology is the third under our editorship and the seventeenth of the series. It continues the tradition of examining a broad range of topics and issues related to the study and treatment of child and adolescent behavior problems. Over the years, the series has served to identify important and exciting new developments in the field and provide scholarly review of current thought and practices. In the openingchapter, Cichetti, Toth, and Lynch examine attachment theory and its implications for psychopathology. They provide exacting commentary on the status of the construct of attachment and its potential role in the development of diverse psychopathologies. Similarly, Richards explores the impact of infant cognitive psychophysiology and its role in normal and abnormal development in the second chapter. Both of these chapters address issues of risk for subsequent psychopathology and are deeply embedded in developmental theory. In Chapter 3/ Nottelmann and Jensen tackle the important issue of comorbidity in psychiatric diagnosis from a developmental perspective.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 428 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In this unique volume, twelve pioneers of historical archaeology offer reminiscences of the early part of their respective careers, circa 1920 to 1940. Each scholar had to overcome numerous biases held by historians and archaeologists-thus each chapter documents a step in the field's march from a marginal to a mainstream discipline. The book makes for facinating reading for archaeologists, anthropologists, and historians of science, and reminds us of the words of C.H. Fairbanks: ''what is past is prelude; study the past. ''Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 252 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In 1979, serious research was just beginning on the connections between stratification outcomes and organizations. Data suitable for investigating these connections were scarce, and the general wisdom was that they would remain scarce--since organizational case studies were seen as the only means of gathering linked individual and organizational data. The case study approach does allow one to link the two types of data, but gathering such data on more than a few organizations is prohibitively expensive and difficult, and having only a few organizations limits g- eralizability. To help solve this problem, we developed the idea of a survey of a random sample of several thousand employed individuals, followed by a second survey of their several thousand employing or- nizations. This method, we reasoned, would provide us with a gen- alizable, simple random sample of individuals, coupled with a weighted random sample of organizations (weighted, of course, by size of orga- zation). An added benefit would be that these valuable data could be gathered by a survey organization for the price of two simple surveys. It was not an easy idea to sell. We developed it into a proposal to the National Science Foundation (NSF), and though the reviewers were o- erwise sympathetic, they were almost unanimous in their contention that such a survey would not work because 'obviously' the great maj- ity of respondents would refuse to reveal exactly who their employers were.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 260 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The symposium on 'Worldwide Advances in Communications Networks' which was held on May 14-15, 1992 at GMU was an ambitious attempt to bring together leaders in the communications area to discuss the major issues in this rapidly-changing technology. The symposium was a success and many of the ideas presented at the conference are being implemented. This proceeding contains the majority of the papers presented at the symposium and abstracts of the remainder. The papers may be divided into seven general categories. The first five papers explore some important design issues for high speed networks (gigabit networks). Traffic modelling, quality of service guarantees, switching alternatives, and routing are discussed. The next two papers focus on applications for broadband communications. Weinstein begins by asking, 'ARE THERE ANY APPLICATIONS ' and then proceeds to develop a wide variety of potential uses. Personick concentrates on multimedia applications. The next three papers deal with Personal Communications Services (PCS) and the notion of communicating with anyone, at any time, anywhere. Several of the key technical issues such as CDMA vs TDMA are analyzed in detail. The fourth area is satellite communications. Two papers discuss some of the major changes that are taking place and potential new systems. The next two papers discuss signal coding and digital video. Jayant provides an excellent overview of the impressive capabilities that are available for the compression of speech, audio, image, and video signals. Bellisio concentrates on video encoding.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 200 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This research series will focus on the presentation of integrated, known, and confirmed phenomenological observations of electromagnetic fields; their basic mechanisms of interaction; and their applications in biology and medicine. Moreover, it will promote the flow of ideas between practitioners and researchers in biomedicine, engineering, and the physical sciences. The inaugural volume summarizes the history of the field and presents basic, applied, and clinical information ranging from extremely low to super high frequencies. 208 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The premise behind developing powerful declarative database languages is compelling: by enabling users to specify their queries (and their integrity constraints) in a clear, non-operational way, they make the user's task easier, and provide the database system with more opportunities for optimization. Relational database systems offer a striking proof that this premise is indeed valid. The most popular relational query language, SQL, is based upon relational algebra and calculus, i.e., a small fragment of first-order logic, and the ease of writing queries in SQL (in comparison to more navigational languages) has been an important factor in the commercial success of relational databases. It is well-known that SQL has some important limitations, in spite of its success and popUlarity. Notably, the query language is non-recursive, and support for integrity constraints is limited. Indeed, recognizing these problems, the latest standard, SQL-92, provides increased support for integrity constraints, and it is anticipated that the successor to the SQL-92 standard, called SQL3, RECURSIVE UNION operation [1]. Logic database systems have will include a concentrated on these extensions to the relational database paradigm, and some systems (e.g., Bull's DEL prototype) have even incorporated object-oriented features (another extension likely to appear in SQL3). 308 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -I was asked to introduce this volume by examining 'why a knowledge of ecosys tem functioning can contribute to understanding species activities, dynamics, and assemblages.' I have found it surprisingly difficult to address this topic. On the one hand, the answer is very simple and general: because all species live in ecosystems, they are part of and dependent on ecosystem processes. It is impossible to understand the abundance and distribution of populations and the species diversity and composition of communities without a knowledge of their abiotic and biotic environments and of the fluxes of energy and mat ter through the ecosystems of which they are a part. But everyone knows this. It is what ecology is all about (e.g., Likens, 1992). It is why the discipline has retained its integrity and thrived, despite a sometimes distressing degree of bickering and chauvinism among its various subdisciplines: physiological, be havioral, population, community, and ecosystem ecology. 412 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Information Super Highway concept has gained great popularity recently. If the super highway is to be realised it will almost certainly be built mainly using optical fibres. The British Telecoms research group in this area has long been acknowledged as a leading force in developing optical communications technology. In this book they set out the technology necessary to build the super highway of the future. 346 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The object ofthis text is to examine, and elaborate on the meaning of the established premise that 'taste is a chemical sense.' In particular, the major effort is directed toward the degree to which chemical principles apply to phenomena associated with the inductive (recognition) phase of taste. A second objective is to describe the structure and properties of compounds with varying taste that allow decisions to be made with respect to the probable nature of the recognition chemistry for the different tastes, and the probable nature of the receptor(s) for those tastes. A final objective is to include appropriate interdisciplinary observations that have application to solving problems related to the chemical nature of taste. Taste is the most easily accessible chemical structure-biological activity relationship, and taste chemistry studies, i.e. the chemistry of sweetness, saltiness, sourness, and bitterness, have application to general biology, physiology, and pharmacology. Because it involves sensory perception, taste is also of interest to psychologists, and has application to the food and agricultural industries. The largest portion of the text is directed toward sweetness as, due to economic and other factors, the majority of the scientific studies are concerned with sweetness. The text begins with a prologue to describe the problems associated with the study of taste chemistry. Then, there is an introductory chapter to serve as an overview of the general interdisciplinary knowledge of the subject. It is followed by a chapter on the fundamental chemical principles that apply to taste induction chemistry. 644 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This PSTV'94 Symposium is the fourteenth of a series of annual meetings organized under the auspices of IFIP W.G. 6.1, a Working Group dedicated to 'Architectures and Protocols for Computer Networks'. This is the oldest and most established symposium in the emerging field of protocol engineering which has spawn many international conferences including FORTE (International Conference on Formal Description Tech niques), IWPTS (International Workshop on Protocol Test Systems), ICNP (Interna tional Conference on Network Protocols) and CAY (Conference on Computer-Aided Verification). The main objective of this PSTV symposium is to provide a forum for researchers and practitioners in industry and academia interested in advances in using formal methods and methodologies to specify, develop, test and verify communication protocols and distributed systems. This year's PSTV symposium enjoys a nice mixture of formal methods and practical issues in network protocols through the invited addresses of three outstanding speakers, Ed Brinksma (University of Twente), Raj Jain (Ohio State University) and David Tennenhouse (MIT) as well as 5 tutorials, in addition to 9 techni cal sessions and two practical panel sessions. The 5 tutorials are offered on the first day in two parallel tracks for intensive exposure on hot topics of current interest. This year, out of 51 submissions the Program Committee selected 18 regular papers (with an allotment of 16 pages in the Proceedings) and 9 mini-papers (of 8 pages). 420 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Although there are many books on angina, few are devoted to the important problem of how to evaluate drug efficacy in angina pectoris. Drug Evaluation in Angina Pectoris has two fundamental aims: the first is to review the methodological aspects of drug evaluation in stable and unstable angina pectoris; the second is to provide a logical and methodological background for future studies aimed at assessing the ability of medical treatment to improve prognosis. Part I updates the pathophysiology, clinical presentation and prognosis of angina pectoris. Part II aims to `put in numbers' the symptoms and signs of myocardial ischemia, starting from a revision of the currently used parameters. It is extremely important to quantify the variability of the disease for the correct design of clinical trial, a subject dealt with in Part III, which also discusses some clinico-pharmacological aspects of therapy. Part IV is a critical review of the drugs currently used for the treatment of stable and unstable angina, and particularly considers some important unresolved issues concerning their use. The current FDA and EC guidelines for the evaluation of antianginal drugs are briefly discussed in Part V, giving clinical investigators insight into how antianginal drugs are evaluated by regulatory agencies and what is considered as proof of a valid efficacy/tolerability ratio. Drug Evaluation in Angina Pectoris will assist discerning cardiologists, pharmacologists, and advanced students of cardiology as well as innovative pharmaceutical companies, all of whom need to understand what angina is, how to evaluate treatment, and how to judge the agents used in its treatment. 284 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Preschool children have been largely neglected in the mental health treatment literature, although research has established that many behavioral and emotional disorders in children result from events occurring during the preschool years or are first manifested during this period. This has occurred for several reasons. Traditional psychoanalytic thinking has considered preschoolers to be too psychologically immature for complete manifestations of psychopathology, and the limited language abilities of young children have complicated assessment procedures and made them less appropriate for treatment approaches that are largely verbal in nature. In addition, the developmental complexity of the preschool period has deterred many researchers from investigating clinical issues with this age group. Partly as a result of the lack of information on preschoolers in the literature, practitioners have historically been uncomfortable in conduct ing assessments and initiating treatment with young children. They have often adopted a 'wait and see' attitude in which formal mental health diagnosis and treatment are not implemented until after the child's entry into school. Unfortunately, such a delay may mean wasting the time during which mental health interventions can be maximally effective. Recently, this attitude has changed and practitioners now recognize the need for assessment and treatment of behavioral and emotional disorders early in life. What they require to assist them in the timely delivery of such services is information about assessment and treatment procedures specifically designed for preschoolers and with demonstrated efficacy with that age group. 316 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -MRI Physics for Radiologists, Third Edition delineates the principles of MRI in a format that can be understood by readers who don't have a sophisticated physics or mathematics background.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 196 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Plant parasitic nematodes are a main pest to crops. For ex am pie, the root-knot nematodes belonging to the genus Meloidogyne are worldwide in their distribution and attack almost every type of crop, causing considerable losses of yield and affecting quality of produce. The cyst nematodes within the genera Globodera and Heterodera constitute a major group of plant pathogens in many countries throughout the world, suppressing yields of potato, sugar beet, soybean and cereals. Several nematodes such as longidorids and trichodorids are implicated in the transmission of numerous plant viruses. Many others cause constraints to agricultural production either locally or on large areas. However, despite their economic importance (they account for worldwide crop reduction in excess of 10%), plant parasitic nematodes are still poorly understood, because most of them are obligate parasites of roots. Environmental concerns over the agricultural use of pesticides demand the development of alternative measures to control them. To achieve environmentally sound control, knowledge of the basic biology of nematodes must be expanded. Important research areas include understanding the molecular bases for pathogenicity, the molecular mechanisms of the host parasite interactions and the genetic bases for population fluctuations. The workshop has, for the first time, brought together an international group of researchers using molecular approaches to study plant parasitic nematodes and their host responses.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 324 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -As a follow up to Volume 7, contributors continue to explore the latest developments in developmental psychology. Here, researchers focus on the integration of theory and research and evaluates theoretical progress and advanced research. Continuing with the successful format of previous volumes in Annals of Theoretical Psychology, Volume 10 presents four major contributions-each accompanied by commentaries and replies to commentaries.Libri GmbH, Europaallee 1, 36244 Bad Hersfeld 412 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Preschool children have been largely neglected in the mental health treatment literature, although research has established that many behavioral and emotional disorders in children result from events occurring during the preschool years or are first manifested during this period. This has occurred for several reasons. Traditional psychoanalytic thinking has considered preschoolers to be too psychologically immature for complete manifestations of psychopathology, and the limited language abilities of young children have complicated assessment procedures and made them less appropriate for treatment approaches that are largely verbal in nature. In addition, the developmental complexity of the preschool period has deterred many researchers from investigating clinical issues with this age group. Partly as a result of the lack of information on preschoolers in the literature, practitioners have historically been uncomfortable in conduct ing assessments and initiating treatment with young children. They have often adopted a 'wait and see' attitude in which formal mental health diagnosis and treatment are not implemented until after the child's entry into school. Unfortunately, such a delay may mean wasting the time during which mental health interventions can be maximally effective. Recently, this attitude has changed and practitioners now recognize the need for assessment and treatment of behavioral and emotional disorders early in life. What they require to assist them in the timely delivery of such services is information about assessment and treatment procedures specifically designed for preschoolers and with demonstrated efficacy with that age group.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 316 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -xiii ¿ We have almost the cheapest letter price in the OEeD. ¿ We've quadrupled the retail outlets where you can buy stamps, but closed three quarters of our Post Offices. On time delivery is better than 97%. ¿ The workforce has been reduced by 40%, with a 25% increase in volumes over the period. Real unit costs, measured by total real expenditure divided by total volumes, have been reduced by over 20%. What do these results and achievements mean for policy setters around the world In particular, do these results for New Zealand Post prove that it is a commercial business, and what are the lessons for other postal businesses Market Forces New Zealand Post presently has a limited letter monopoly, a 45 cent letter price against an 80 cent competitive floor price. The existence of this level of protection somehow negates the company's commercial achievements. The combination of high efficiency and low prices cannot persuade everyone that the results are not my view, are the only ones that can solely monopoly driven. Market forces, in answer my question: is New Zealand Post a commercial organization We need the test offree and open competition to see whether we've got the business formula right. Before advancing this argument, which in essence is the case for deregulation, it may be useful to distinguish between market behavior and Post behavior.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 306 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Although there are many books on angina, few are devoted to the important problem of how to evaluate drug efficacy in angina pectoris. Drug Evaluation in Angina Pectoris has two fundamental aims: the first is to review the methodological aspects of drug evaluation in stable and unstable angina pectoris; the second is to provide a logical and methodological background for future studies aimed at assessing the ability of medical treatment to improve prognosis.Part I updates the pathophysiology, clinical presentation and prognosis of angina pectoris. Part II aims to `put in numbers' the symptoms and signs of myocardial ischemia, starting from a revision of the currently used parameters. It is extremely important to quantify the variability of the disease for the correct design of clinical trial, a subject dealt with in Part III, which also discusses some clinico-pharmacological aspects of therapy. Part IV is a critical review of the drugs currently used for the treatment of stable and unstable angina, and particularly considers some important unresolved issues concerning their use. The current FDA and EC guidelines for the evaluation of antianginal drugs are briefly discussed in Part V, giving clinical investigators insight into how antianginal drugs are evaluated by regulatory agencies and what is considered as proof of a valid efficacy/tolerability ratio.Drug Evaluation in Angina Pectoris will assist discerning cardiologists, pharmacologists, and advanced students of cardiology as well as innovative pharmaceutical companies, all of whom need to understand what angina is, how to evaluate treatment, and how to judge the agents used in its treatment.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 284 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The object ofthis text is to examine, and elaborate on the meaning of the established premise that 'taste is a chemical sense.' In particular, the major effort is directed toward the degree to which chemical principles apply to phenomena associated with the inductive (recognition) phase of taste. A second objective is to describe the structure and properties of compounds with varying taste that allow decisions to be made with respect to the probable nature of the recognition chemistry for the different tastes, and the probable nature of the receptor(s) for those tastes. A final objective is to include appropriate interdisciplinary observations that have application to solving problems related to the chemical nature of taste. Taste is the most easily accessible chemical structure-biological activity relationship, and taste chemistry studies, i.e. the chemistry of sweetness, saltiness, sourness, and bitterness, have application to general biology, physiology, and pharmacology. Because it involves sensory perception, taste is also of interest to psychologists, and has application to the food and agricultural industries. The largest portion of the text is directed toward sweetness as, due to economic and other factors, the majority of the scientific studies are concerned with sweetness. The text begins with a prologue to describe the problems associated with the study of taste chemistry. Then, there is an introductory chapter to serve as an overview of the general interdisciplinary knowledge of the subject. It is followed by a chapter on the fundamental chemical principles that apply to taste induction chemistry.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 644 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -I was asked to introduce this volume by examining 'why a knowledge of ecosys tem functioning can contribute to understanding species activities, dynamics, and assemblages.' I have found it surprisingly difficult to address this topic. On the one hand, the answer is very simple and general: because all species live in ecosystems, they are part of and dependent on ecosystem processes. It is impossible to understand the abundance and distribution of populations and the species diversity and composition of communities without a knowledge of their abiotic and biotic environments and of the fluxes of energy and mat ter through the ecosystems of which they are a part. But everyone knows this. It is what ecology is all about (e.g., Likens, 1992). It is why the discipline has retained its integrity and thrived, despite a sometimes distressing degree of bickering and chauvinism among its various subdisciplines: physiological, be havioral, population, community, and ecosystem ecology.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 412 pp. Englisch.