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Taschenbuch. Condizione: Neu. Neuware -Denken Sie, das Gehirn ist eine perfekte Rechenmaschine, die evolutionäre Krone aller Informationssysteme, die komplexeste Struktur des Universums, präziser und leistungsfähiger als jeder Computer Vergessen Sie das sofort! Das Gehirn ist ein Haufen voller eitler, fauler und selbstverliebter Zellen, die sich ständig verrechnen und dabei noch permanent von ihren Nachbarn abgelenkt werden.Da hält man es kaum für möglich und doch geschieht das Wunder: Das Gehirn funktioniert! Sehr gut sogar, denn Menschen sind im Gegensatz zu rechnenden Maschinen ausgesprochen kreativ.'Wie das ', mag man fragen und dieses Buch gibt die Antwort darauf. Fachlich fundiert und locker aufbereitet berichtet der deutsche Science Slam-Meister 2012 Henning Beck über das Zusammenspiel von Nerven- und ihren Helferzellen, erklärt, was ein Geistesblitz überhaupt ist, wie er entsteht und was die Hirnforschung zum Thema Kreativität zu sagen hat. 243 pp. Deutsch.

Taschenbuch. Condizione: Neu. Neuware -Denken Sie, das Gehirn ist eine perfekte Rechenmaschine, die evolutionäre Krone aller Informationssysteme, die komplexeste Struktur des Universums, präziser und leistungsfähiger als jeder Computer Vergessen Sie das sofort! Das Gehirn ist ein Haufen voller eitler, fauler und selbstverliebter Zellen, die sich ständig verrechnen und dabei noch permanent von ihren Nachbarn abgelenkt werden.Da hält man es kaum für möglich und doch geschieht das Wunder: Das Gehirn funktioniert! Sehr gut sogar, denn Menschen sind im Gegensatz zu rechnenden Maschinen ausgesprochen kreativ.'Wie das ', mag man fragen und dieses Buch gibt die Antwort darauf. Fachlich fundiert und locker aufbereitet berichtet der deutsche Science Slam-Meister 2012 Henning Beck über das Zusammenspiel von Nerven- und ihren Helferzellen, erklärt, was ein Geistesblitz überhaupt ist, wie er entsteht und was die Hirnforschung zum Thema Kreativität zu sagen hat. 243 pp. Deutsch.

Taschenbuch. Condizione: Neu. Neuware -Denken Sie, das Gehirn ist eine perfekte Rechenmaschine, die evolutionäre Krone aller Informationssysteme, die komplexeste Struktur des Universums, präziser und leistungsfähiger als jeder Computer Vergessen Sie das sofort! Das Gehirn ist ein Haufen eitler, fauler und selbstverliebter Zellen, die sich ständig verrechnen und dabei permanent von ihren Nachbarn abgelenkt werden. Man hält es kaum für möglich und doch geschieht das Wunder: Das Gehirn funktioniert! Sehr gut sogar, denn Menschen sind im Gegensatz zu rechnenden Maschinen ausgesprochen kreativ.

Taschenbuch. Condizione: Neu. Neuware - Contains worked-out solutions to all odd-numbered exercises in the single variable section of the Taalman/Kohn Calculus text.

Taschenbuch. Condizione: Neu. Neuware - This book examines in detail the diagnostic impact of contrast-enhanced ultrasound in the evaluation of urinary tract pathology, paying particular attention to the diagnostic gain that may be expected in relation to other imaging techniques such as CT and MRI. The role of contrast-enhanced ultrasound is evaluated in a range of pathologies, including ischemia, trauma, inflammation, cystic lesions, and solid tumors, as well as in the imaging of anatomic variants. New applications, for example monitoring of kidney transplantation, assessment of urinary bladder lesions, and diagnosis of vesico-ureteric reflux, are also covered. The presented cases, drawn from the authors' personal clinical caseload, include images obtained using multimodality techniques, sometimes with 3D CT reconstruction. The authors' own experiences are compared with the most recent reports in the scientific literature.

Taschenbuch. Condizione: Neu. Neuware.

Taschenbuch. Condizione: Neu. Neuware - The three articles of the present volume clearly exhibit a wide scope of articles, which is the aim of this series. The article by Kahana and Baltz lies in the main flow of the large stream of work currently in progress with heavy-ion accelerators. A related article by Terry Fortune on 'Multinuclear Transfer Reactions with Heavy Ions' is scheduled to appear in the next volume. The article by Whitehead, Watt, Cole, and Morrison pertains to the nuclear-shell model for which a number of articles have appeared in our series. Our very first volume had an article on how SU(3) techniques can, with great elegance, enable one to cope with the sizable number of states within a configuration. But the actual nuclear force is not exactly that yielded by the elegant techniques, and so interest continued in dealing with the large number of states by brute force. Then the Glasgow school of Whitehead et al. discovered that mathematical techniques existed for coping more simply with the lowest eigenvalues of large matrices. The present ar ticle aims generally to make accessible to nuclear physicists the methods developed at Glasgow. The final article by Baer, Crowe, and Truol on radiative pion capture describes a new field of importance because of the advent of the meson factories. More and more pions and muons will become standard tools in nuclear physics.

Taschenbuch. Condizione: Neu. Neuware - IT Governance is finally getting the Board's and top management's attention. The value that IT needs to return and the associated risks that need to be managed, have become so important in many industries that enterprise survival depends on it. Information integrity is a significant part of the IT Governance challenge. Among other things, this conference will explore how Information Integrity contributes to the overall control and governance frameworks that enterprises need to put in place for IT to deliver business value and for corporate officers to be comfortable about the IT risks the enterprise faces. The goals for this international working conference are to find answers to the following questions: - what precisely do business managers need in order to have confidence in the integrity of their information systems and their data; - what is the status quo of research and development in this area; - where are the gaps between business needs on the one hand and research I development on the other; what needs to be done to bridge these gaps. The contributions have been divided in the following sections: - Refereed papers. These are papers that have been selected through a blind refereeing process by an international programme committee. - Invited papers. Well known experts present practice and research papers upon invitation by the programme committee. - Tutorial. Two papers describe the background, status quo and future development of CobiT as well as a case of an implementation of Co biT.

Taschenbuch. Condizione: Neu. Neuware - This volume contains the invited papers and selected contributed papers presented at the biennial International Symposium on ELECTRON COLLISIONS WITH MOLECULES, CLUSTERS AND SURF ACES held at Royal Holloway, University of London from 29th to 30th July, 1993. This Symposium was a Satellite Meeting of the XVIII International Conference on the Physics of Electronic and Atomic Collisions (ICPEAC) and follows a 16 year tradition of Satellite Conferences in related areas of collisions held in association with previous ICPEAC's. In the past each of these electron -molecule symposia covered the broad field of electron-molecule scattering at rather low energies, but also included hot topics. This time as well as covering the whole field, well defined electron collisions with clusters and with particles in the complex potential of a surface were emphasized. Not many details are known about such collisions, although they become more and more important in surface characterisation, plasma-wall interactions, electron induced desorption and reorganisation of adsorbed particles. Recently, much work, theoretical and experimental, has been devoted to electron collisions with rather large carbon, silicon and halogen containing molecules. These problems are of relevance in plasma assisted thin film formation and etching of surfaces and can now be approached with advanced theoretical methods and experimental equipment.

Taschenbuch. Condizione: Neu. Neuware - This book presents the work on aphasia coming out of the Institute for Aphasia and Stroke in Norway during its 10 years of existence. Rather than reviewing previously presented work, it was my desire to give a unified analysis and discussion of our accumulated data. The empirical basis for the analysis is a fairly large group (249 patients) investigated with a standard, comprehensive set of procedures. Tests of language functions must be developed anew for each language, but comparison of my findings with other recent compre hensive studies of aphasia is faciliated by close parallels in test meth ods (Chapter 2). The classification system used is currently the most accepted neurological system, but I have operationalized it for research purposes (Chapter 3). The analyses presented are based on the view that aphasia is an aspect of a multidimensional disturbance of brain function. Find ings of associated disturbances and variations in the aphasic condition over time have been dismissed by some as irrelevant to the study of aphasia as a language deficit. My view is that this rich and complex set of findings gives important clues to the organization of brain functions in humans. I present analyses of the relationship of aphasia to neuropsychological disorders in conceptual organization, memory, visuospatial abilities and apraxia (Chapters 4, 5, and 6), and I study the variations with time of the aphasic condition (Chapter 8).

Taschenbuch. Condizione: Neu. Neuware - There is little prospect of an immediate cure for cancer. The seeds of destruction seem to be sown within all of us, and there is no consensus about how these seeds develop into tumors or about what can be done to halt that development. Indeed, it is often difficult to find a consensus about any aspect of cancer research. The sharply conflicting views of investigators in different subdisciplines has been most aptly summarized by Charles Heidelberger of the McArdle Laboratory for Cancer Research, who argues that 'the mechanism of cancer is a mirror into which each man looks and sees himself. ' This is true despite the fact that large infusions of money and manpower now come to the aid of cancer research. In late 1974, Betty Ford and Margaretta (Happy) Rockefeller underwent surgery for breast cancer. The extensive publicity surrounding these mastectomies provoked a great deal of interest in the subject of cancer, particularly breast cancer. Newspaper and television stories associated with the operations gave their audiences some insight into the nature of cancer and cancer research, but they provided only a glimpse of the sweeping changes that the directions of cancer research have under gone in the last few years. In large part, these changes simply reflect the natural progression of research, but there is little question that that progression was sharply accelerated by the National Cancer Act of 1971, which initiated what politicians then termed a 'crusade against cancer.

Taschenbuch. Condizione: Neu. Neuware - This volume chronicles the proceedings of the Symposium on Metallized Plastics: Fundamental and Applied Aspects held under the auspices of the Dielectrics and Insulation Division of the Electrochemical Society in Chicago, October 10-12, 1988. This was the premier symposium on this topic and if the comments from the attendees are any barometer of the success of a symposium then it was a grand success. Concomitantly, it has been decided to hold it on a regular basis (at intervals of 18 months) and the second event in this series is planned as a part of the Electrochemical Society meeting in Montreal, Canada, May 6-10, 1990. Metallized plastics find a legion of applications ranging from mundane to very sophisticated. A complete catalog of the various technological applications of metallized plastics will be prohibitively long, so here some eclectic examples should suffice to show why there is such high tempo of R&D activity in the arena of metallized plastics, and all signals indicate that this high tempo will continue unabated. For example, polymeric films are metallized for packaging (food and other products) purposes, and the applications of metallized plastics in the automotive industry are quite obvious. In the field of microelectronics and computer technology, insulators are metallized for interconnection and other functional purposes. Also plastics are metallized to provide electromagnetic shielding.

Taschenbuch. Condizione: Neu. Neuware - Although a number of books have appeared on learning disabili ties, we feel that the present book has two distinct features which are not found in most others. It is multidisciplinary and it com bines theory with practice. A group of researchers from the disciplines of Psychology in cluding medical psychology and information processing, Reading, Special Education and Physical Education interacted with each other before and after their presentations in a conference (November 1980, at the University of Alberta, Edmonton, Canada), and then wrote their chapters for this book. We hope that their chapters were enriched by the discussions and arguments which happened in formal and informal settings during the authors' stay in Edmonton. Dr. Leong could not attend the conference, but was asked to write the introductory chapter for the book. The contributors to this volume have been involved with basic research as well as with clinical and educational research in learning disabilities. Some of them have a theoretical rather than a practical interest. However, a serious interest in a handicapping condition perhaps compels one to consider its amelioration no matter how 'pure' is the researcher. It is because of such a feeling.that those who do basic research have sug gested procedures for applying their findings. The result is a balanced product, entailing theory and practice.

Taschenbuch. Condizione: Neu. Neuware - Volume I of Theory and Research in Behavioral Pediatrics focused on issues of early human development, with special emphasis given to assessment of the preterm infant and to factors inftuencing the organization of the caregiver infant relationship. Chapters in Volume 2 cover a broader range of topics and encompass a wider age span. Chapter I provides a historical review of the relationship between developmental psychology and pediatrics. The authors, Barbara R. Tinsley and Ross D. Parke, discuss differences between behavioral pediatrics and pediatric psychology and note that interdiscipli nary collaboration in research and application has increased steadily in re cent years. However, if similar collaborative efforts are to occur in education and training of pediatricians and developmental psychologists, it will be necessary to determine just what each discipline hopes to gain from such collaborative efforts. Tinsley and Parke report the results of anational survey designed to determine the areas of developmental psychology that pediatricians perceive to be of potential benefit to them in their delivery of pediatric care. Results of the survey suggest that there are many ways in which developmental psychology could be in corpora ted into the pediatric curriculum. In many respects, Chapter 2 sets the stage for the remaining chapters. Nancy A. Carlson and Thomas Z.

Taschenbuch. Condizione: Neu. Neuware - This volume initiates a series devoted to theory and research in behavioral pedi atrics. Focusing attention on the limited scientific contributions to understanding the development of behavior will, we hope, stimulate further research in this vitally important area of human knowledge. The ability of an individual to achieve his or her full potential as an adult is to a significant degree determined by critical variables in this development within a given society. Study of this aspect of human biology, therefore, may have far-reaching effects on the evolving human species. An awareness of the complexity of the behavioral patterns in infancy is of relatively recent origin and is an obvious essential starting point for this series of publications. The need to discriminate between objective observations and theo retical constructs and to design scientifically valid experiments is vital to progress in understanding early infant behavior. It is easy to misinterpret apparent responses to interventions, especially in infants at biological risk. Preterm infants and their caretakers are particularly challenging as subjects but very difficult to assess scientifically. The interactions between mother and newborn and father and newborn hold promise of substantial additional insights into the development of behavior. Thus, this volume provides interesting perspectives into the relationship of the evolving immature neurological system to complex behavior patterns in newborn infants which raise many new questions and exciting opportunities to extend our very limited knowledge about the newborn infant's psychosocial, emo tional, and cognitive development. RICHARD E. BEHRMAN, M. D.

Taschenbuch. Condizione: Neu. Neuware - This volume is the product of a conference on the theme 'Development - the Next Twenty-five Years' which the Institute of Social Studies held in Decem ber 1977 to mark its own twenty-fifth anniversaryas a centre of development studies. We felt it appropriate at that point in time to caU together specialists from all over the world in an attempt to assess the 'state of play' in our field as we move into the last quarter of the twentieth century. 1 For several days, therefore, the Institute's new building house d a remarkable concentration of knowledge and experience concerning the problems of the so-calle d less developed countries, drawn from all over the world. Although it was inevitable that the participants should represent the past (and it was several times re marked that, in that sense, there were too few women present), the earnest and sometimes heated discussions looked to the future as much as to what had happened in the last twenty-five years. As the discussions proceeded, three things became apparent. Firstly , although the papers submitted did not fully reveal it, the ongoing debate between radicals and moderates, those who saw possibilities of change only basically through a direct break with existing structures and those who felt change possibIe within them, is by no means at an end.

Taschenbuch. Condizione: Neu. Neuware - This book concerns measuring reading skills. It is not meant to be a compre hensive survey of reading research or a review of all possible approaches to reading measurement (although considerable attention is given to both subjects). Instead, the purpose of this book is to present a coherent, theoretically based approach to measuring reading competence. The ability to measure a phenomenon is an important prerequisite for scientific analysis. As Lord Kelvin said, 'One's knowledge of science begins when he can measure what he is speaking about and express it in numbers.' Unfortunately, not just any numbers will do. Presently available reading tests provide their users with a plethora of numbers-age levels, percentiles, grade equivalents-but their scientific value is questionable. The problem is that there is more to scientific measurement than merely assigning numbers to arbitrarily chosen behaviors. Scientific measurement occurs only within the confines of a theory, and most reading tests are atheoretical. Recent years have witnessed an explosive growth in reading research.

Taschenbuch. Condizione: Neu. Neuware - The second edition of Treating the Criminal Offender was written in an atmosphere of disillusionment and severe criticism of the traditionalist ap proach to treatment. As crime rates soared, the voices of the critics rose in volume and intensity. And so, this third edition-revised toward the end of the decade of the 1980s-embodies the shift in emphasis from rehabilitating the offender to protecting the community. This shift, in our opinion, does not reject the goal of changing the of fender so as to effect his reintegration into society; it uses the strategy of intensive supervision and surveillance only to effect the desired goal. The use of electronics to monitor the offender's whereabouts and the swift ap plication of punitive measures following. the awareness of any violation are extrinsic techniques of control. It is our opinion that for the deep, more lasting changes in behavior, some form of casework, counseling, and/or psy chotherapeutic intervention is essential. We are the cohorts who believe in the effectiveness of such treatment modalities when and if applied to the right target population at the appropriate time.

Taschenbuch. Condizione: Neu. Neuware - In this groundbreaking work, distinguished contributors explore the myriad relationships between networks of social support and the development, treatment, and rehabilitation of individuals with cardiovascular disease. Chapters span the range from conceptual to methodological issues, and take into account gender, environmental, and cultural differences. The book will provide a wealth of information for clinicians and students in the fields of behavioral medicine, psychophysiology, and cardiovascular disease.

Taschenbuch. Condizione: Neu. Neuware - Discussion of the precise nature and position of boundaries between dis ciplines is nearly always counterproductive; the need is usually to cross them not to emphasize them. And any such discussion of the distinction between ethology and comparative psychology would today seem patently absurd. While there may be differences in outlook, no boundaries exist. But when Frank Beach started in research, that was not the case. Comparative psychology flourished in the United States whereas ethology was unknown. Beach started as a comparative psychologist and has always called himself either that or a behavioral endocrinologist. Yet, among the com parative psychologists of his generation, he has had closer links with the initially European ethologists than almost any other. He was indeed one of the editors of the first volume of Behaviour. That this should have been so is not surprising once one knows that his Ph. D. thesis concerned 'The Neural Basis for Innate Behavior,' that he used to sleep in the laboratory so that he could watch mother rats giving birth, and that in 1935 he was using model young to analyze maternal behavior. Furthermore, for nine years he worked in the American Museum of Natural History-in a department first named Experimental Biology and later, when Beach had saved it from extinction and become its chairman, the Department of Animal Behavior. It was in 1938, during Frank's time at the American Museum, that he was first introduced to Niko Tinbergen by Ernst Mayr.

Taschenbuch. Condizione: Neu. Neuware - This volume presents the proceedings of a symposium on the 'Control of the thyroid gland~ regulation of its normal function and growth,' held at the National Insti tutes of Health, Bethesda, Maryland on March 20 and 21, 1989. Our motivation for the organization of this symposium was the fast development in re cent years of our understan ding of the regulation of the thyroid - and the progress in the field of cell regulation in general - which have led to profound modifications of our view of the control of the thyroid. Not so many years aga the thyroid was thought to be controlled by one regulator, the pituitary TSH, which with cyclic AMP in the role of second messen ger was considered to express or regulate most or all processes in the gland. In the last several years it has been weIl documented that hormones other than TSH and various growth factors are involved in thyroid growth con trol and it has been increasingly clear that several hor mones and neurogenic agents are obligate participants in the regulation of thyroid function. In addition, not only new agonists acting on the thyroid have been revealed, but new transducer and second messenger systems have been discovered. In particular the interest has been - and is focused on the signals emanating from the hydrolysis of the inositol phospholipids, comprising the inositol tris phosphate/Ca2~ pathway and the diacylglycerol/protein kinase C pathway.

Taschenbuch. Condizione: Neu. Neuware - During May 21-June 1 1990, the eleventh course of the International School of Pure and Applied Biostructure, a NATO Advanced Study Institute, was held at the Ettore Majorana Center for Scientific Culture in Erice, Italy, co-sponsored by the Italian Ministry of Universities and of Scientific and Technological Research, the North Atlantic Treaty Organization, the Italian National Research Council, the Sicilian Regional Government and Technobiochip. The subject of the course was 'Molecular Basis of Human Cancer' with participants selected worldwide from 15 different countries. The purpose of the course was to address, in a tutorial and structural fashion, the molecular basis of human cancer, including the mechanism of signal transduction in mammalian cells, the genetic mechanism of malignant transformation in man, growth factors, hormone receptors, cell membrane and cytoskeleton, and DNA high order structure. The course had this as its major objective and the resulting book reflects it. The participants were exposed to a critical evaluation of current knowledge about cancer and to some of the key problems that remain as stumbling blocks to our eventual understanding of this important biological and medical problem. Through the media of formal and informal lectures, workshops, symposia and informal discussions, a select group of interested young and senior scientists were acquainted with many of the aspects of human cancer.

Taschenbuch. Condizione: Neu. Neuware - Introduction: Where is the Individual Subject in Scientific Psychology .- Introduction: Where is the Individual Subject in Scientific Psychology .- Individual-Based Inference Methodology: Past, Present, and the Future.- Psychology as a Science.- From Idiographic Approaches to Nomothetic Hypotheses.- The Production, Detection, and Explanation of Behavioral Patterns.- Group versus Individual-Based Inference in Psychology: Logic and Practice.- Phenomena Lost.- Between Groups and Individuals.- The Individual Subject in Behavior Analysis Research.- The Time Domain in Individual Subject Research.- Ordinal Pattern Analysis.- Toward the Study of Individual Subjects: Contributions from Different Fields in Psychology.- Academic Diagnosis.- A Method for the Analysis of Patterns, Illustrated with Data on Mother-Child Instructional Interaction.- The Role of the Case Study in Neuropsychological Research.- Psychophysiological Activation Research.- Sequence-Structure Analysis.- Epilogue: Different Perspectives on Individual-Based Generalizations in Psychology.- Epilogue: Different Perspectives on Individual-Based Generalizations in Psychology.

Taschenbuch. Condizione: Neu. Neuware - The purpose of this and future volumes of the Handbook of Genetics is to bring together a collection of relatively short, authoritative essays or annotated compilations of data on topics of significance to geneticists. Many of the essays will deal with various aspects of the biology of certain species selected because they are favorite subjects for genetic investigation in nature or the laboratory. Often there will be an encyclopedic amount of information available on such a species, with new papers appearing daily. Most of these will be written for specialists in a jargon that is be wildering to a novice, and sometimes even to a veteran geneticist working with evolutionarily distant organisms. For such readers what is needed is a written introduction to the morphology, life cycle, reproductive be havior, and culture methods for the species in question. What are its par ticular advantages (and disadvantages) for genetic study, and what have we learned from it Where are the classic papers, the key bibliographies, and how does one get stocks of wild type or mutant strains The chapters devoted to different species will contain information of this sort. Only a few hundreds of the millions of species available to biologists have been subjected to detailed genetic study. However, those that have make up a very heterogeneous sample of the living world.

Taschenbuch. Condizione: Neu. Neuware - - __ ___ __ - __ e _e __ M-A-S-S S-P- Pds. -C-T-R-O-M- Pds. -T-R-Y in Morse code This volume collects descriptions of selected recent developments in state-of the-art mass spectrometric methods and reflects the broad-based approaches that mass spectroscopists apply to a variety of important clinical and bio medical problems. One chapter reviews current mass-spectrometric instrumen tation and techniques, and other chapters describe the use of mass-spectro metric methods for the analysis of diacylglycerylphospholipids; modifications to DNA molecules; the characterization of variant hemoglobins; and charac terization of urinary nucleosides. The final chapter describes the new technique of combined microdialysis/mass spectrometry. This volume represents the collected efforts of several highly productive researchers who have developed new methods and instrumentation and have applied them to current research problems, such as lipid storage diseases, cancer, hemoglobinopathies, and brain neurochemistry. The chapters in Vol umes 1 and 2 define the outlines of clinical and biomedical mass spectrometry and attest to the flexibility and creativity of mass spectroscopists and their interaction with biologic and clinical scientists. The authors in this volume are to be congratulated for their writing efforts, their scientific vigor and rigor, their intellectual contributions, and the ex perimental details that are described in these chapters. I thank each author for collaborating with me on the production of this volume, and I hope these chapters will help the practitioners of, and the newcomers to, the field of mass spectrometry.

Taschenbuch. Condizione: Neu. Neuware - How are we to understand the complex forces that shape human be havior A variety of diverse perspectives, drawing on studies of human behavioral ontogeny, as well as humanity's evolutionary heritage, seem to provide the best likelihood of success. It is in an attempt to synthesize such potentially disparate approaches to human development into an integrated whole that we undertake this series on the genesis of behav ior. In many respects, the incredible burgeoning of research in child development over the last decade or two seems like a thousand lines of inquiry spreading outward in an incoherent starburst of effort. The need exists to provide, on an ongoing basis, an arena of discourse within which the threads of continuity between those diverse lines of research on human development can be woven into a fabric of meaning and understanding. Scientists, scholars, and those who attempt to translate their efforts into the practical realities of the care and guidance of infants and children are the audience that we seek to reach. Each requires the opportunity to see-to the degree that our knowledge in given areas permits-various aspects of development in a coherent, integrated fash ion. It is hoped that this series-which will bring together research on infant biology, developing infant capacities, animal models, the impact of social, cultural, and familial forces on development, and the distorted products of such forces under certain circumstances-will serve these important social and scientific needs.

Taschenbuch. Condizione: Neu. Neuware - Molecular clusters, in the broad sense that the term is commonly understood, today comprise an enormous class of species extending into virtually every important area of chemistry: 'naked' metal clusters, transition metal carbonyl clusters, hydrocarbon cages such as cubane (C H ) and dodecahedrane (C H ), 8 8 20 20 organometallic cluster complexes, enzymes containing Fe S or MoFe S 4 4 3 4 cores, high polymers based on carborane units, and, of course, the many kinds of polyhedral borane species. So large is the area spanned by these diverse classes that any attempt to deal with them comprehensively in one volume would, to say the least, be ambitious-and also premature. We are presently at a stage where intriguing relationships between the various cluster families are becoming apparent (particularly in terms of bonding descriptions), and despite large dif ferences in their chemistry an underlying unity is gradually developing in the field. For example, structural changes occurring in Fe S cores as electrons are 4 4 pumped in and out, in some measure resemble those observed in boranes and carboranes. The cleavage of alkynes via incorporation into carborane cages and subsequent cage rearrangement, a sequence familiar to boron chemists, is a thermodynamically favored process which may be related to the behavior of unsaturated hydrocarbons on metal surfaces; analogies of this sort have drawn attention from theorists and experimentalists.

Taschenbuch. Condizione: Neu. Neuware - When, forty years ago, as a student of Charles Coulson in Oxford I began work in theoretical chemistry, I was provided with a Brunsviga calculator-a small mechanical device with a handle for propulsion, metal levers for setting the numbers, and a bell that rang to indicate overflow. What has since come to be known as computational chemistry was just beginning. There followed a long period in which the fundamental theory of the 'golden age' (1925-1935) was extended and refined and in which the dreams of the early practitioners were gradually turned into hard arithmetic reality. As a still-computing survivor from the early postwar days now enjoying the benefits of unbelievably improved hardware, I am glad to contribute a foreword to this series and to have the opportunity of providing a little historical perspective. After the Brunsviga came the electromechanical machines of the late 1940s and early 1950s, and a great reduction in the burden of calculating molecular wavefunctions. We were now happy. At least for systems con taining a few electrons it was possible to make fully ab initio calculations, even though semiempirical models remained indispensable for most molecules of everyday interest. The 1950 papers of Hall and of Roothaan represented an important milestone along the road to larger-scale non empirical calculations, extending the prewar work of Hartree and Fock from many-electron atoms to many-electron molecules-and thus into 'real chemistry.

Taschenbuch. Condizione: Neu. Neuware - Over thirty years ago, Alfred North Whitehead wrote: 'If America is to be civilized, it has to be done (at least for the present) by the business class who are in possession of the power and the economic resources . . . . If the American universities were up to their job, they would be taking business in hand and teaching it ethics and professional standards. ' \* To the intellectual elites of his time, there was something of a minor in Whitehead's view. Few of them saw business as a civilizing force heresy and even fewer, feeling that business was not to be tamed, relished the role of the lion tamers. Not many today doubt Whitehead's wisdom. Organiza tions of wealth and power have accepted their corporate social responsibili ties, and universities have launched major efforts to provide ethical instruc tion for business personnel. So far as the scholars are concerned, they quickly came to realize the difficulty of an undertaking that seeks to redefine and apply moral criteria to a very complex corporate world. Philosophers, in particular, have learned (or perhaps have relearned) how their speculations on ethics must take into account the 'living ethic' expressed in the American culture and here anthropologists, sociologists, and theologians were needed to provide an expertise that the moral manuals did not.

Taschenbuch. Condizione: Neu. Neuware - It is well known that behavior problems are a salient characteristic of children and adults with mental retardation. That is not to say that all persons with mental retardation experience behavior disorders; how ever, most studies indicate that the incidence of emotional disturbance in this population is four to six times greater than that observed in similar intellectually nonhandicapped children and adults. It is equally well known that the principal form of treatment accorded clients with mental retardation and behavior disorders is pharmacotherapy or the prescrip tion of behavior modifying drugs. Recent studies show that 6 out of every 10 individuals with mental retardation have been prescribed drugs as treatment for disorders of emotion or behavior. Unfortunately, further studies indicate that only one or 2 out of every 10 clients receiving medication are determined to be 'responders,' such that some thera peutic benefit is derived from their drug treatment. As noted by the title, the single major thrust of this volume is to review approaches to the treatment of behavior disorders in persons with mental retardation from a nondrug perspective. This requires the presentation of a wide range of material on treatment: basic behavior modification programming, cognitive-behavioral strategies, habilitative approaches, counseling and psychotherapy, designing therapeutic living environments, managing medical factors bearing relevance to emotional illness, intervening with families, training special education teachers and direct care staff, and supplying information on the client's rights to obtain treatment in the least restrictive and least intrusive manner.