springer apr 1986 (183 resultados)

Taschenbuch. Condición: Neu. Neuware -Classifying generalized quantifiers.- Classification over a predicate II.- Existence of endo-rigid Boolean algebras.- On the no(M) for M of singular power.- Non standard uniserial module over a uniserial domain exists.- Remarks on the numbers of ideals of Boolean algebra and open sets of a topology.- The existence of coding sets.- Monadic logic: Hanf Numbers.- More on stationary coding.- On normal ideals and Boolean algebras.- A note on -freeness of abelian groups.- On countable theories with models ¿ homogeneous models only.- On decomposable sentences for finite models.- Remarks on squares. 292 pp. Englisch.

Buch. Condición: Neu. Neuware -This book is about marine seismic sources, their history, their physical principles and their deconvolution. It is particularly accented towards the physical aspects rather than the mathematical principles of signature generation in water as it is these aspects which the authors have found to be somewhat neglected. A huge amount of research has been carried out by both commercial and academic institutions over the years and the resulting literature is a little daunting, to say the least. In spite of this, the subject is intrinsically very simple and relies on a very few fundamental physical principles, a somewhat larger number of heuristic principles and a refreshingly small amount of blunderbuss mathematics. As such it is still one of those subjects in which the gifted practical engineer reigns supreme and from which many of the important advances have originated. In Chapter 1 of the book, the underlying physics and concepts are discussed, including pressure and wave propagation, bubble motion, virtual images and the factors determining choice of source. In marine reflection seismology, almost all of the seismic data acquired currently is done with either the airgun or the watergun, which rely on the expulsion of air and water respectively to generate acoustic energy. As a consequence, the discussion in this chapter is geared towards these two sources, as is much of the rest of the book.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 128 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -This text exposes the basic features of cohomology of sheaves and its applications. The general theory of sheaves is very limited and no essential result is obtainable without turn ing to particular classes of topological spaces. The most satis factory general class is that of locally compact spaces and it is the study of such spaces which occupies the central part of this text. The fundamental concepts in the study of locally compact spaces is cohomology with compact support and a particular class of sheaves,the so-called soft sheaves. This class plays a double role as the basic vehicle for the internal theory and is the key to applications in analysis. The basic example of a soft sheaf is the sheaf of smooth functions on ~n or more generally on any smooth manifold. A rather large effort has been made to demon strate the relevance of sheaf theory in even the most elementary analysis. This process has been reversed in order to base the fundamental calculations in sheaf theory on elementary analysis.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 480 pp. Englisch.

Buch. Condición: Neu. Neuware -Why a book on Iatchup Latchup has been, and continues to be, a potentially serious CMOS reliability concern. This concern is becoming more widespread with the ascendency of CMOS as the dominant VLSI technology, particularly as parasitic bipolar characteristics continue to improve at ever smaller dimensions on silicon wafers with ever lower defect densities. Although many successful parts have been marketed, latchup solutions have often been ad hoc. Although latchup avoidance techniques have been previously itemized, there has been little quantitative evaluation of prior latchup fixes. What is needed is a more general, more systematic treatment of the latchup problem. Because of the wide variety of CMOS technologies and the long term interest in latchup, some overall guiding principles are needed. Appreciating the variety of possible triggering mechanisms is key to a real understanding of latchup. This work reviews the origin of each and its effect on the parasitic structure. Each triggering mechanism is classified according to a new taxonomy.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 266 pp. Englisch.

Buch. Condición: Neu. Neuware -The formation of roots is in some respects one of the least fundamentally understood of all plant functions. Propagation by cuttings is the aspect that will occur first to most gardeners and horticulturists, and it is certainly the most useful application. But any observant traveller in the tropics can notice that some trees have the habit of forming roots in the air. Climbers like Cissus bear long fine strings of roots hanging down. Pandanus trees tend to have stout aerial roots issuing from the bases of the long branches, while the tangle of roots around the trunk of many of the Ficus species is characteristic. In Ficus bengalensis, in particular, stout cylindrical roots firmly embedded in the ground from a height of 3 to 5 meters give support to the long horizontal branches, enabling them to spread still further. In the big old specimen at Adyar near Madras, the spread of these branches all around the tree, each with a strong root growing out every few meters, makes a shaded area under which meetings of almost 5000 people are sometimes held. The history of how the formation of roots on stem cuttings was found to be under hormonal control is worth repeating here. 284 pp. Englisch.

Buch. Condición: Neu. Neuware -Several years ago I came across a marvelous little paper in which Hector-Neri Castaneda shows that standard versions of act utilitarian l ism are formally incoherent. I was intrigued by his argument. It had long seemed to me that I had a firm grasp on act utilitarianism. Indeed, it had often seemed to me that it was the clearest and most attractive of normative theories. Yet here was a simple and relatively uncontrover sial argument that showed, with only some trivial assumptions, that the doctrine is virtually unintelligible. The gist of Castaneda's argument is this: suppose we understand act utilitarianism to be the view that an act is obligatory if and only if its utility exceeds that of each alternative. Suppose it is obligatory for a certain person to perform an act with two parts - we can call it 'A & B'. Then, obviously enough, it is also obligatory for this person to perform the parts, A and B. If act utilitarianism were true, we appar ently could infer that the utility of A & B is higher than that of A, and higher than that of B (because A & B is obligatory, and the other acts are alternatives to A & B).Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 264 pp. Englisch.

Buch. Condición: Neu. Neuware -Eight years ago, four psychologists with varying backgrounds but a common in terest in the impact of environmental stress on behavior and health met to plan a study of the effects of aircraft noise on children. The impetus for the study was an article in the Los Angeles Times about architectural interventions that were planned for several noise-impacted schools under the air corridor of Los Angeles Interna tional Airport. These interventions created an opportunity to study the same chil dren during noise exposure and then later after the exposure had been attenuated. The study was designed to test the generality of several noise effects that had been well established in laboratory experimental studies. It focused on three areas: the relationship between noise and personal control, noise and attention, and noise and cardiovascular response. Two years later, a second study, designed to replicate and extend findings from the first, was conducted.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 300 pp. Englisch.

Buch. Condición: Neu. Neuware -While various volumes havepreviously been de bable, answer to this question lies in the obser vation that while whitecaps are some of the voted to such topics as droplets and bubbles, it is our conceit that this is the first volume dedi most apparent features associated with high sea cated to the description of the phenomenon states, they have also pro'ed to be someofthe of oceanic whitecapping, and to a considera most difficult objects to measure and describe tion of the role these whitecapsplay in satellite quantitatively, and while scientists as a group marine remote sensing, in sea-salt aerosol gene may like to tackle difficult problems, we ration, and in a broad range ofother sea surface should not be accused ofundue modesty when processes. This observation, reOecting in part we observe that as a group we also have a finite the relatively modest attention paid until re tolerance for frustration and ahuman,perhaps cently by the scientific community to white aesthetic, prejudice in favour ofnatural pheno caps, is noteworthy when one considers that mena that are amcnable to detailed description. collectively whitecaps are to thegeneral public It is appropriate to note that Professor Wood one of the most striking features of the sea cock, to whom this volume is dedicated, ap scape.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 310 pp. Englisch.

Buch. Condición: Neu. Neuware -Is science a social construction as Pinch maintains Of course it is, because it constructed by scientists. But as Pinch's study demonstrates, it is constructed from experimental evidence, rational discussion and criticism, and the inventiveness of scientists.' British Journal for History of Science .he (Pinch) has produced an important book which will be useful to historians of science, who will find a sentive and detailed history of an important episode of modern science who want to find a common ground to discuss the hypothetical specificity of sience vis-a-vis others cultural activities.' Science, 235 This is a much more readable account than normal in texts on the sociology of science, and its attention to historical detail is commendable.' Physics Bulletin (1987) This book is a very welcome contribution to the sociology and the contemporary history of science.' Sociology, 23: 3 (1989)Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 284 pp. Englisch.

Buch. Condición: Neu. Neuware -Lung cancer is one of the biggest challenges in oncology today. The challenge is due to the recognition of the possibility of prevention in at least 70-80 % of all the cases and the extreme difficulties encountered in the treatment of this neoplasm. Despite the knowledge of prevention measures such as cessation of cigarette smoking the incidence continues to increase in many countries. The increase is particularly notable in females in the west ernized countries where the death rate in females in certain regions sur passes that of breast cancer. Furthermore, in many developing countries lung cancer is now being diagnosed with increasing frequency in both sexes and it is expected to be a major cause of death in those countries later in this century or the beginning of next century if the tobacco consumption will continue its rapid rise. With respect to therapy the 1970'es brought considerable progress in understanding of the clinical behaviour of lung cancer thereby establishing the importance of distinguishing between the major histologic types. Thera peutic advancement was particularly experienced in small cell carcinoma with the introduction of combination chemotherapy after this special dis ease entity among lung cancers was recognized as being a disseminated dis ease in almost all cases at the time of diagnosis. It was expected that the improvement in therapy would have continued in the early 1980'es, not only for small cell lung cancer but also for the other cell types.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 290 pp. Englisch.

Buch. Condición: 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.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 432 pp. Englisch.

Buch. Condición: Neu. Neuware Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 344 pp. Englisch.

Buch. Condición: Neu. Neuware -This book has been well received in many places and in many countries. It was awarded a ranking in the top ten publications on behavioral medicine in the year that it first appeared. When, in 1977, we began to fit the components of Cancer, Stress, and Death together, the established medical view was that each subject repre sented a different discipline, and that to integrate fields so diverse in information content was to seek to achieve a synthesis beyond reasonable limits. Had we been required to concern ourselves with the knowledge of each component in its entirety, this might have been so, but our concern, of course, was to integrate only those items of knowledge in any one field that could bear upon the field of interest of another. Moreover, we were concerned that physi cians and scientists take account of the inner forces that shape motivation and individual behavior, as well as the cultural identity of individuals, and we hoped that the biopsychosocial way in which we believed would gain ground and win support. Now, with need for a second edition, one can hardly conceive of not bringing together diverse contributions in one volume. Such syntheses as we have made clearly confirm that one can arrive at several levels of understanding of human situations through wise integration of biological paradigms within various social, cultural, and psychological parameters-which essentially is a simple way of defining the biopsychosocial way.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 396 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -This publication is a continuation of two earlier series of chroni cles, Philosophy in the Mid-Century (Firenze 1958/59) and Con temporary Philosophy (Firenze 1968), edited by Raymond Kli bansky. Like the other series, these chronicles provide a survey of important trends in contemporary philosophical discussion from 1966 to 1978. The need for such surveys has, I believe, increased rather than decreased over the last years. The philosophical scene appears, for various reasons, more complex than ever before. The continuing process of specialization in most branches, the emergence of new schools of thought, particularly in philosophical logic and the philosophy of language, the convergence of interest (though not necessarily of opinion) of different traditions upon certain prob lems, and the increasing attention being paid to the history of philosophy in discussions of contemporary problems are the most important contributory factors. Surveys of the present kind are a valuable source of knowledge of this complexity and may as such be an assistance in renewing the understanding of one's own philosophical problems. The surveys, it is to be hoped, may also help to strengthen the Socratic element of modern philosophy, the dialogue or Kommunikationsgemeinschajt. So far, four volumes have been prepared for the new series. The present chronicles in Philosophy of Action (Vol. 3) follow upon chronicles in the Philosophy of Language and Philosophical Logic (V 01. 1) and chronicles in the Philosophy of Science (Vol.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 384 pp. Englisch.

Buch. Condición: Neu. Neuware.

Buch. Condición: Neu. Neuware -Carl Friedrich Gauss¿s textbook, Disquisitiones arithmeticae, published in 1801 (Latin), remains to this day a true masterpiece of mathematical examination. .Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 496 pp. Englisch.

Buch. Condición: Neu. Neuware -The great number of varied approaches to hydrodynamic stability theory appear as a bulk of results whose classification and discussion are well-known in the literature. Several books deal with one aspect of this theory alone (e.g. the linear case, the influence of temperature and magnetic field, large classes of globally stable fluid motions etc.). The aim of this book is to provide a complete mathe matical treatment of hydrodynamic stability theory by combining the early results of engineers and applied mathematicians with the recent achievements of pure mathematicians. In order to ensure a more operational frame to this theory I have briefly outlined the main results concerning the stability of the simplest types of flow. I have attempted several definitions of the stability of fluid flows with due consideration of the connections between them. On the other hand, as the large number of initial and boundary value problems in hydrodynamic stability theory requires appropriate treat ments, most of this book is devoted to the main concepts and methods used in hydrodynamic stability theory. Open problems are expressed in both mathematical and physical terms.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 312 pp. Englisch.

Buch. Condición: Neu. Neuware -This second volume of papers dealing with scientific and ethical aspects of animal welfare covers a variety of topics and areas of inves tigation. It will be of particular interest to those readers seeking more insight into such subjects as farm animal welfare and humane husbandry systems; animal experimentation, especially in the field of psychology; and pain in animals, notably its recognition and alleviation. Several of our selections deal with very specific subjects that are germane to animal welfare: the use of T-61 for euthanizing cats and dogs, a new humane method of stunning for livestock and poultry, an innovative alternative to killing animals for rabies diagnosis, alterna tives to aversive procedures in teaching experimental psychology, and the need for improved theoretical modeling in animal experimentation and research design. Following the precedent set in the first volume of Advances in Animal Welfare Science, we have included several papers dealing with people's attitudes toward animals. These papers range from a consider ation of cultural influences and veterinary ethics to an examination of anthropomorphism, to a discussion of the linkage between the environ mental politics and perceptions of the Green Movement and animal welfare and rights. We wish to express our gratitude to the Manuscript Review Commit tee for the excellent work they have done and to the twenty contributors to this volume which we believe will do much to advance the science of animal welfare, and the well-being of animals under man's dominion.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 322 pp. Englisch.

Buch. Condición: Neu. Neuware -The Second International Symposium on Inflammatory Bowel Diseases was held in Jerusalem from September 8-11, 1985, under the auspices of the Israel Academy of Sciences, the Israel Gastroenterological Society and the Hebrew University-Hadassah Medical School. Five hundred physicians and researchers from 26 countries attended. The symposium was organized into six panels devoted to state of the art reviews and presentations of the latest findings and approaches on etiology, pathogenesis, medical and surgical management of IBD and clini cal assessment of disease. In addition, 89 abstracts were presented as posters during the symposium, all of which were published in the book of abstracts. The concluding panel outlined new directions for future re search on IBD. The organizing committee gratefully acknowledges all the contributors who presented their work in a clear and concise manner, and to all the participants whose active role in the discussions contributed to the suc cess of the meeting. In view of the great interest in the symposium and the tradition es tablished following the first, in 1981, it was decided to convene a third international symposium on IBD in Jerusalem in September 1989.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 346 pp. Englisch.

Buch. Condición: Neu. Neuware -cake, even though it is typically given the pride of place in expositions in Frege's semantics. As a part of this attempted reversal of emphasis, Jaakko Hintikka has also called attention to the role Frege played in convincing almost everyone that verbs for being had to be treated as multiply ambiguous between the 'is' of identity, the 'is' of predication, the 'is' of existence, and the 'is' of class-inclusion - a view that had been embraced by few major figures (if any) before Frege, with the exception of John Stuart Mill and Augustus De Morgan. Hintikka has gone on to challenge this ambiguity thesis. At the same time, Frege's role in the genesis of another major twentieth-century philosophical movement, the phenomenological one, has become an important issue. Even the translation of Frege's key term 'Bedeutung' as 'reference' has become controversial. The interpretation of Frege is thus thrown largely back in the melting pot. In editing this volume, we have not tried to publish the last word on Frege. Even though we may harbor such ambitions ourselves, they are not what has led to the present editorial enterprise. What we have tried to do is to bring together some of the best ongoing work on Frege. Even though the ultimate judgment on our success lies with out readers, we want to register our satisfaction with all the contributions.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 406 pp. Englisch.

Buch. Condición: Neu. Neuware -This is a book about the petrology of kimberlites. It is not about upper mantle xenoliths, diamonds, or prospecting for kimberlites. The object of the book is to provide a comprehensive survey and critique of the advances which have been made in kimberlite studies over the last twenty-five years. Kimberlites are rare rock types; however, their relative obscurity is overriden by their economic and petrological importance to a degree which is not shared with the commoner varieties of igneous rocks. Kimberlites are consequently of interest to a diverse group of earth scientists, ranging from isotope g~ochemists concerned with the evolution of the mantle, to volcanologists pondering the origins of diatremes, to exploration geologists seeking new occurrences of the diamondiferous varieties. A common factor essential to all of these activities is a thorough understanding of the characteristics of kimberlites. For the petrologist, kimberlites are exciting and challenging objects for study. Their petrographic diversity, complex mineralogy and geochemistry, and unusual style of intrusion provide endless opportunities for stimulating hypothesis and conjecture concerning their origin and evolution. Kimberlites are a part of a wide spectrum of continental intra-cratonic magmatism. Only by understanding all of the parts of this activity in detail may we make progress in our understanding of the whole.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 464 pp. Englisch.

Buch. Condición: Neu. Neuware - The aim of this series is to inform both professional philosophers and a larger readership (of social and natural scientists, methodologists, mathematicians, students, teachers, publishers, etc. ) about what is going on, who's who, and who does what in contemporary philosophy and logic. PROFILES is designed to present the research activity and the results of already outstanding personalities and schools and of newly emerging ones in the various fields of philosophy and logic. There are many Festschrift volumes dedicated to various philosophers. There is the celebrated Library oj Living Phi/osophers edited by P. A. Schilpp whose format influenced the present enterprise. Still they can only cover very little of the contemporary philosophical scene. Faced with a tremendous expansion of philosophical information and with an almost frightening division of labor and increasing specialization we need systematic and regular ways of keeping track of wh at happens in the profession. PRO FILES is intended to perform such a function. Each volume is devoted to one or several philosophers whose views and results are presented and discussed. The profiled philosopher(s) will summarize and review his (their) own work in the main fields of signifi cant contribution. This work will be discussed and evaluated by invited contributors. Relevant historical and/or biographical data, an up-to date bibliography with short abstracts of the most important works and, whenever possible, references to significant reviews and discussions will also be included.

Buch. Condición: Neu. Neuware - Rarely do research paths diverge and converge as neatly and productively as the paths exemplified by the two efforts contained in this book. The story behind these researches is worth recounting. The story, as far as I'm concerned, starts back in the Fall of1976, when John Laird and Paul Rosenbloom, as new graduate students in computer science at Carnegie-Mellon University, joined the Instructible Production System (IPS) project (Rychener, Forgy, Langley, McDermott, Newell, Ramakrishna, 1977; Rychener & Newell, 1978). In those days, production systems were either small or special or both (Newell, 1973; Shortliffe, 1976). Mike Rychener had just completed his thesis (Rychener, 1976), showing how production systems could effectively and perspicuously program the full array of artificial intelligence (AI) systems, by creating versions of Studellt (done in an earlier study, Rychener 1975), EPAM, GPS, King-Pawn-King endgames, a toy-blocks problem solver, and a natural-language input system that connected to the blocks-world system.

Taschenbuch. Condición: Neu. Neuware - This book is addressed to a central area' of current linguistics and psycholinguistics: anaphora. It is a collection of independent studies by individuals who are currently working, on probleJ,IlS in this area. The book includes two independent volumes. The major focus of these volumes is a psycholinguistic problem: the first language acquisition of anaphora. The volumes are intended to provide a basic reference source for the study of this one central, critical area of language competence. They combine results from the interdisciplinary study this area has attracted in recent years. Each of the studies collected here is intended to be readable indepen dently of the others. Thus a theoretical linguist or psycholinguist may each use this book only in part. Two basic assumptions underlie this collection of studies. (1) Signifi cant psycholinguistic study of the problem of first language acquisition requires a basis in linguistic theory. We look to linguistic theory (a) for the formulation of testable hypotheses which are coherent with a general theoretical model of language competence, and which, by empirical confirmation or disconfirmation, will have consequences which can be integra~ed in a general theory of language and of mind. This is because we pursue explanation ~f the problem of firs~ language acquisition, not merely description. (b) We also look to linguistic theory for precision in the description of language stimuli and language behavior in empirical studies. This is in order to promote replicability and interpretability of empirical results: .

Buch. Condición: Neu. Neuware -With Hammer's book as a guide, major gaps in our understanding of saline lakes become clear and research opportunities become apparent.' Ecology, 68 (1987)Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 632 pp. Englisch.

Buch. Condición: Neu. Neuware -It examines the very last developments in technology and subsea systems for oil recovery in such inaccessible environments, and provides an economic assessment of various alternative systems employed in this complex field of operation.' Oil & Gas Australia, February 1987 Overall, this is a well presented, interesting and useful publication for the professional explorer. The individual chapters are well-written and illustrated and are certain to be relevant to those involved in the continuing search for hydrocarbons. The book is highly recommended to all petroleum explorationists - not only those working in the North Sea - because the information, interpretations and concepts could help you find oil and gas in other hydrocarbon provinces.' Marine and Petroleum Geology, 4 (1987)Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 292 pp. Englisch.

Taschenbuch. Condición: Neu. Neuware -entstanden.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 64 pp. Deutsch.

Taschenbuch. Condición: Neu. Neuware Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 476 pp. Deutsch.

Taschenbuch. Condición: Neu. Neuware -interessierten der Einfluß von Trainings zustand, Zykluszeitpunkt, Zyklusstabilität und hormonalen Kontra zeptiva auf Hormonantworten.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 176 pp. Deutsch.

Taschenbuch. Condición: Neu. Neuware -Die vorl iegende Arbeit entstand wa:hrend meiner Tatigkeit als wissen schaftl i cher Mitarbeiter am Institut fUr Umformtechni k der Uni versita:t Stuttgart. Herrn Professor Dr.-Ing. K. Lange danke ich fUr sein Vertrauen und seine wohlwollende UnterstUtzung bei der DurchfUhrung dieser Arbeit. Herrn Professor Dr.-Ing. H. Uetz bin ich fUr seine wertvollen Hinweise und Anregungen sehr dankbar. Mein Dank gilt ferner Herrn Dr.-Ing. habil. K. Pohlandt fUr die Betreuung und kriti sche Durchsicht der Arbeit sowie allen Mitarbeiter innen und Mitarbeitern des Institutes fUr Umformtechnik, die zum Ge lingen der Arbeit beigetragen haben. Ebenfalls danken mochte ich Herrn Professor Dr. G. K. Wolf yom Physika- 1 i sch-Chemi schen Institut -Radi ochemi e- der Uni versita:t Heidel berg fUr sei ne UnterstUtzung bei der DurchfUhrung der Untersuchungen mit der Neutronenaktivierungsanalyse. Weiterhin gilt Herrn Dr.-Ing. J. Fohl und Herrn Dipl.-Ing. K.-J. GroB von der MaterialprUfungsanstalt in Stutt gart mei n besonderer Dank fUr di e Hi lfe beim Ei nsatz des DUnnschi cht Differenzen-Verfahrens. DarUber hinaus bin ich Herrn Opielka yom Max Planck-Institut fUr Metallforschung, Institut fUr Werkstoffwissenschaft in Stuttgart, fUr die metallographischen Untersuchungen und die Erstel lung der REM-Aufnahmen sehr dankbar. Di e Mittel zur DurchfUhrung di eser Arbeit wurden yom Bundesmi ni sterium fUr Forschung und Techno 1 ogi e (BMFT) sowi e yom Kernforschungszentrum Karlsruhe GmbH (KFK) zur VerfUgung gestellt. FUr diese Forderung bin ich zu Dank verpflichtet.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 140 pp. Deutsch.