springer springer nov 1980 (111 Ergebnisse)

Buch. Zustand: Neu. Neuware -An intermittent but mentally quite disabling illness prevented Henry Mehlberg from becoming recognized more widely as the formidable scholar he was, when at his best. During World War II, he had lived in hiding under the false identity of an egg farmer, when the Nazis occupied his native Poland. After relatively short academic appointments at the University of Toronto and at Princeton University, he taught at the University of Chicago until reaching the age of normal retirement. But partly at the initiative of his Chicago colleague Charles Morris, who had preceded him to a 'post-retirement' profes sorship at the University of Florida in Gainesville, and with the support of Eugene Wigner, he then received an appointment at that University, where he remained until his death in 1979. In Chicago, he organized a discussion group of scholars from that area as a kind of small scale model of the Vienna Circle, which met at his apart ment, where he lived with his first wife Janina, a mathematician. It was during this Chicago period that the functional disturbances from his illness were pronounced and not infrequent. The very unfortunate result was that colleagues who had no prior knowledge of the caliber of his writings in Polish and French or of his very considerable intellectual powers, had little incentive to read his published work, which he had begun to write in English.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 332 pp. Englisch.

Buch. Zustand: Neu. Neuware 144 pp. Englisch.

Buch. Zustand: Neu. Neuware -Philosophy, Aristotle is well known to have said, begins in wonder. So, of course, does everything else. Astronomy begins in wonder at the moving lights in the sky; biology, in wonder at the living creatures of the earth; psychology, in wonder at the intricacies and eccentricities of our distinctively human form of life. So, at best, wonder is only a necessary condition for philosophy. What. is peculiar about philosophers is what we are inclined to wonder about. We wonder about everything. In particular, we wonder about astron omy and biology and psychology (and about philosophy) - about whether and how such disciplines are possible and, crucially, about whether and how such disciplines fit together. We don't just wonder about everything. We wonder about everything all at once. Philosophers are general practitioners. Things stand ill with our disciplme today. There was quite recently at large in America an occasional publication under the title Jobs in Philosophy. The title rested upon a confusion, and the publication furthered the confusion upon which it rested. For it did not, in fact, list jobs in philosophy. It couldn't.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 232 pp. Englisch.

Buch. Zustand: Neu. Neuware -There are many valuable and useful books on electrical communication (References 1-5 are some examples), but they have certain disadvantages for the beginner. The more advanced books present some things in a basic way, but they are very narrow for an introduction to communica tion. The introductory books are broader but still narrow by our stan dards. Further, they often pick things out of thin air rather than derive them. This book is aimed at giving the beginner a basic understanding of a wide range of topics which are essential in communication systems. These include antennas and transmission, thermal noise and its consequences, Fourier transforms, modulation and noise, sampling and pulse code modulation, autocorrelation and power spectrum, optimum filtering, gauss ian noise and errors in digital transmission, data transmission, limits on data rate including information theory and quantum limits, and source encoding. We have not included communications traffic, switching, and multiplexing, nor protocols for digital and computer communications. For these, Reference 6 is excellent. In general, our book does not discuss the circuits used for communication or the physics of radio propagation. We assume that these will be taught in specialized courses, but such courses are not prerequisites for this one. Chapter 1 introduces the transmission formula or antenna equation and antenna directivity. Only a very basic sophomore physics knowledge of electromagnetic theory is assumed. The radar equation is also treated.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 412 pp. Englisch.

Buch. Zustand: Neu. Neuware -Stochastic control theory is a relatively young branch of mathematics. The beginning of its intensive development falls in the late 1950s and early 1960s. During that period an extensive literature appeared on optimal stochastic control using the quadratic performance criterion (see references in W onham [76J). At the same time, Girsanov [25J and Howard [26J made the first steps in constructing a general theory, based on Bellman's technique of dynamic programming, developed by him somewhat earlier [4J. Two types of engineering problems engendered two different parts of stochastic control theory. Problems of the first type are associated with multistep decision making in discrete time, and are treated in the theory of discrete stochastic dynamic programming. For more on this theory, we note in addition to the work of Howard and Bellman, mentioned above, the books by Derman [8J, Mine and Osaki [55J, and Dynkin and Yushkevich [12]. Another class of engineering problems which encouraged the development of the theory of stochastic control involves time continuous control of a dynamic system in the presence of random noise. The case where the system is described by a differential equation and the noise is modeled as a time continuous random process is the core of the optimal control theory of diffusion processes. This book deals with this latter theory. 324 pp. Englisch.

Buch. Zustand: Neu. Neuware -A sports reporter might say that in a competition all the participants realize their potentialities or possibilities. When an athlete performs far below his usual standard, it can be said that it was possible for him to do better. But the idea of fair play requires that this use of 'possible' refers to another com petition. It is presumed that the best athlete wins and that no real possibility of doing better is left unrealized in a competition. Here we have a use of language, a language game, in which modal notions are used so as to imply that if something is possible, it is realized. This idea does not belong to the general presuppositions of current ordinary usage. It is, nevertheless, not difficult to fmd other similar examples outside of the language of sports. It may be that such a use of modal notions is sometimes calculated to express that in the context in question there are no real alternative courses of events in contradistinction to other cases in which some possible alternatives remain unrealized. Even though modal notions are currently interpreted without the presup position that each genuine possibility should be realized at some moment of the actual history, there are contemporary philosophical models of modalities which incorporate this presupposition. In his book Untersuchungen tiber den Modalkalkiil (Anton Hain, Meisenheim am Glan 1952, pp. 16-36), Oscar Becker presents a statistical interpretation of modal calculi.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 340 pp. Englisch.

Buch. Zustand: Neu. Neuware Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 308 pp. Englisch.

Buch. Zustand: Neu. Neuware.

Buch. Zustand: Neu. Neuware -Of all the plants men have ever grown, none has been praised and denounced as often as marihuana (Cannabis sativa). Throughout the ages, marihuana has been extolled as one of man's greatest benefactors and cursed as one of his greatest scourges. Marihuana is undoubtedly a herb that has been many things to many people. Armies and navies have used it to make war, men and women to make love. Hunters and fishermen have snared the most ferocious creatures, from the tiger to the shark, in its herculean weave. Fashion designers have dressed the most elegant women in its supple knit. Hangmen have snapped the necks of thieves and murderers with its fiber. Obstetricians have eased the pain of childbirth with its leaves. Farmers have crushed its seeds and used the oil within to light their lamps. Mourners have thrown its seeds into blazing fires and have had their sorrow transformed into blissful ecstasy by the fumes that filled the air. Marihuana has been known by many names: hemp, hashish, dagga, bhang, loco weed, grass-the list is endless. Formally christened Cannabis sativa in 1753 by Carl Linnaeus, marihuana is one of nature's hardiest specimens. It needs little care to thrive. One need not talk to it, sing to it, or play soothing tranquil Brahms lullabies to coax it to grow. It is as vigorous as a weed. It is ubiquitous. It fluorishes under nearly every possible climatic condition.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 308 pp. Englisch.

Buch. Zustand: Neu. Neuware.

Buch. Zustand: Neu. Neuware -Since Paul Cranefield published his monograph, The Conduction of the Cardiac Impulse, in 1975, much has been learned about the role of the slow inward current in cardiac electrophysiology. Because of this expanse in know ledge, both basic and clinical, it appeared reasonable to review in a mono graph once again what was known. When Martinus Nijhoff first approached us to undertake the task of updating this information, we were initially reluctant for several reasons. First, we did not feel that the subject could be adequately and thoroughly reviewed, from the cell to the bedside, by a single person. Second, time constraints on all of us precluded even attempting such a task. However, we were encouraged by several of our friends (' egged on' one might even say, since they wished the job done but did not want to do it themselves!) who promised faithfully to contribute chapters on time if we accepted the task. So we did, and most of them did also.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 540 pp. Englisch.

Buch. Zustand: Neu. Neuware -During the past few years there has been a marked increase in the use of advanced chemical methods in studies of soil and clay mineral systems, but only a relatively small number of soil and clay scientists have become intimately associ ated and acquainted with these new techniques. Perhaps the most important obstacles to technology transfer in this area are: 1) many soil and clay chemists have had insufficient opportunities to explore in depth the working principles of more recent spectroscopic developments, and therefore are unable to exploit the vast wealth of information that is available through the application of such ad vanced technology to soil chemical research; and 2) the necessary equipment gen erally is unavailable unless collaborative projects are undertaken with chemists and physicists who already have the instruments. The objective of the NATO Advanced Study Institute held at the University of Illinois from July 23 to August 4, 1979, was to partially alleviate these obstacles. This volume, which is an extensively edited and reviewed version of the proceedings of that Advanced Study Institute, is an essential aspect of that purpose. Herein are summarized the theory and most current applications of six different spectroscopic methods to soil and/or clay mineral systems. The instrumental methods examined are Mossbauer, neutron scattering, x-ray photoelectron (XPS, ESCA), nuclear magnetic resonance (NMR), electron spin resonance (ESR, EPR), and photoacoustic spectroscopy. Contributing authors were also lecturers at the Advanced Study Institute, and are each well known and respected authorities in their respective disciplines.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 492 pp. Englisch.

Buch. Zustand: Neu. Neuware - The 1977 lectures of the International School for the History of Science at Erice in Sicily were devoted to that vexing but inexorable problem, the nature of scientific discovery. With all that has been written, by scientists themselves, by historians and philosophers and social theorists, by psycholo gists and psychiatrists, by logicians and novelists, the problem remains elusive. Happily we are able to bring the penetrating lectures from Erice that summer to a wider audience in this volume of theoretical investigations and detailed case studies. The ancient and lovely town of Erice in Northwest Sicily, 750 m above the sea, was famous throughout the Mediterranean for its temple of the goddess of nature, Venus Erycina, said to have been built by Daedalus. As philosophers and historians of the natural sciences, we hope that the stimulating atmo sphere of Erice will to some extent be transmitted by these pages. We are especially grateful to that generous and humane physician and historian of science, Dr. Vincenzo Cappelletti, himself a creative scientist, for his collaboration in bringing this work to completion. We admire his intelligent devotion to fostering creative interaction between scientists and historians of science as Director of the School of History of Science within the great Ettore Majorana Centre for Scientific Culture at Erice, as well as for his imaginative leadership of the Istituto della Encic10pedia Italiana.

Buch. Zustand: Neu. Neuware - The ending of the decade of the seventies and the dawning of the eighties can be characterized as a period of great uncertainty with prospects for economic political instability. High inflation and fluctuating exchange rates in the de veloped Western world have served to strengthen the forces of disequilibrium in the fmancial markets, leading to an investment situation with several unusual but significant factors. Capital spending by business, leading to the creation of new jobs, has not been reduced substantially during this period of uncertainty, as happened in similar periods in the past. This is shown in part by the continuing low unemployment rates in evidence during the period, which are in contradic tion to the trend exhibited in similar past periods. The expanding financing re quirements resulting from high price inflation have led to an increase in the capital intensity of firms, and thus to enhanced sensitivity of their income streams to economic fluctuations. At the same time, the record high interest rates that companies have had to pay to acquire this inflated amount of capital have caused a deterioration in the safety or quality indica tors by which the creditworthiness of the firms is judged. These developments tend to increase vii viii INTRODUCTION the stakes involved in business decision making. One important repercussion of this is that greater attention is now being focused on improving the quality of investment decisions.

Buch. Zustand: Neu. Neuware -'This second volume of the author's work presents a clear, detailed and complete introduction to the modern techniques associated with F.I.O. Its main goal is an accurate exposition of the principal results and applications of the theory of F.I.O. This goal is brilliantly achieved.' -- MATHEMATICAL REVIEWSSpringer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 380 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -herkommlichen Werkstattfertigung, bei der die kurzfristige Fertigungssteuerung manuell vom Meister oder Arbeitsverteiler abgewickelt wird, auto matisiert ablaufen.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 156 pp. Deutsch.

Taschenbuch. Zustand: Neu. Neuware -Der ständig wachsende Energiebedarf und das im ver gangenen Jahrzehnt geprägte Bewußtsein der limitier ten fossilen Energiereserven, aus denen die Stei gerung im Energieverbrauch sorglos gedeckt werden konnte, haben nun bei der Suche nach Alternativ energien auch der Geothermie zu einer Blütezeit verholfen. Nicht nur in der angewandten Geothermie, die auf Prospektion und Förderung der Erdwärme ausgerichtet ist, werden bedeutende Erkenntnisse gesammelt, son dern auch in der allgemeinen Geothermie, die den thermischen Zustand unseres Erdkörpers aus allge mein naturwissenschaftlicher Sicht betrachtet, haben die entwickelten Methoden der Temperaturer mittlung unser Bild des thermischen Zustandes auf und in der Erde mit mehr Details darzustellen ge holfen. Die überaus große Fülle von Einzelarbeiten zu geo thermischen Themen ist jedoch kaum dazu geeignet, einem interessierten Leser und Studierenden der Geowissenschaften einen einführenden Uberblick über die in letzter Zeit so viel beachtete Geothermie zu geben. Wenngleich im vorliegenden Beitrag nicht der Versuch unternommen wurde, eine Monographie der Geo thermie vorzulegen, so soll doch der Interessierte an die Geothermie herangeführt werden, und die vor liegende Abhandlung soll den Einstieg in die spezi elle Thematik erleichtern helfen. Die Geothermie wird als Teil der Geophysik an Hoch schulen und Universitäten gelehrt und gehört als Fachgebiet zur Ausbildung von Studenten der Geowis senschaften. Diese Einführung in die Geothermie rich tet sich besonders an die Studierenden der Geophysik und ist zum Gebrauch neben Vorlesungen gedacht. Der Dank für das Zustandekommen dieser Arbeit gilt meinem verehrten Lehrer, Herrn Prof. Dr. o. Rosenbach.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 172 pp. Deutsch.

Taschenbuch. Zustand: Neu. Neuware Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 356 pp. Deutsch.

Taschenbuch. Zustand: Neu. Neuware -Die vorliegende Arbeit entstand während meiner Tätigkeit in Firma Neumeyer-Fließpressen GmbH, Nürnberg. Sie wurde angeregt von den Herren Dr. -Ing. M. Burgdorf und Dr. -Ing. H. W. Wagener, denen ich für Unterstützung und viele Ratschläge dankbar bin. Herrn Prof. Dr. -Ing. K. Lange danke ich sehr herzlich für die Betreuung der Arbeit, seine fachkundige Beratung und für viele wertvolle Anregungen und Hinweise. Herrn Prof. DTech h. c. Dipl. -Ing. K. Tuffentsammer möchte ich für sein Interesse an dieser Abhandlung und für deren kritische Durchsicht recht herzlich danken. Mein Dank gilt auch den Mitarbeitern des Institutes für Umform technik an der Universität Stuttgart, die mir durch manchen Hin weis sehr geholfen haben. Der Geschäftsleitung der Firma Neumeyer-Fließpressen GmbH, Nürnberg, danke ich für die Förderung der Arbeit. Lauf a. d. P. , im Dezember 1979 Herbert Leykamm Inhaltsverzeichnis Seite Formelgrößen, Indices und Abkürzungen 12 o Einleitung 16 O. 1 Elemente der Arbeitsgenauigkeit 17 O. 2 Einflußgrößen auf die Arbeitsgenauigkeit 18 0. 3 Erkenntnisstand 18 O. 4 Aufgabenstellung 20 1 Überblick über die erreichbare Arbeitsgenauigkeit und Toleranzbestimmung mit Hilfe statistisch gesicherter Zusammenhänge für Stahlwerkstücke 22 1. 1 Grundlagen 22 1. 2 Ergebnisse der Berechnungen 24 1. 3 Grenzen der Toleranzbestimmung mit Hilfe statistisch gesicherter Zusammenhänge 26 2 Einfluß der Schwankungen der Rohteilmasse auf die Arbeitsgenauigkeit 29 2. 1 Auftretende Masseschwankungen an Rohteilen 29 2. 1. 1 Gesägte Rohteile 30 2. 1. 2 Gescherte Rohteile 32 2. 2 Auswirkungen auf die Arbeitsgenauigkeit 33 33 2. 2.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 172 pp. Deutsch.

Taschenbuch. Zustand: Neu. Neuware - Der ständig wachsende Energiebedarf und das im ver gangenen Jahrzehnt geprägte Bewußtsein der limitier ten fossilen Energiereserven, aus denen die Stei gerung im Energieverbrauch sorglos gedeckt werden konnte, haben nun bei der Suche nach Alternativ energien auch der Geothermie zu einer Blütezeit verholfen. Nicht nur in der angewandten Geothermie, die auf Prospektion und Förderung der Erdwärme ausgerichtet ist, werden bedeutende Erkenntnisse gesammelt, son dern auch in der allgemeinen Geothermie, die den thermischen Zustand unseres Erdkörpers aus allge mein naturwissenschaftlicher Sicht betrachtet, haben die entwickelten Methoden der Temperaturer mittlung unser Bild des thermischen Zustandes auf und in der Erde mit mehr Details darzustellen ge holfen. Die überaus große Fülle von Einzelarbeiten zu geo thermischen Themen ist jedoch kaum dazu geeignet, einem interessierten Leser und Studierenden der Geowissenschaften einen einführenden Uberblick über die in letzter Zeit so viel beachtete Geothermie zu geben. Wenngleich im vorliegenden Beitrag nicht der Versuch unternommen wurde, eine Monographie der Geo thermie vorzulegen, so soll doch der Interessierte an die Geothermie herangeführt werden, und die vor liegende Abhandlung soll den Einstieg in die spezi elle Thematik erleichtern helfen. Die Geothermie wird als Teil der Geophysik an Hoch schulen und Universitäten gelehrt und gehört als Fachgebiet zur Ausbildung von Studenten der Geowis senschaften. Diese Einführung in die Geothermie rich tet sich besonders an die Studierenden der Geophysik und ist zum Gebrauch neben Vorlesungen gedacht. Der Dank für das Zustandekommen dieser Arbeit gilt meinem verehrten Lehrer, Herrn Prof. Dr. o. Rosenbach.

Taschenbuch. Zustand: Neu. Neuware -Bei der Abfassung dieses Buches Uber die Verpackung war folgendes zu bedenken: Beschreibende VerpackungsbUcher Uber das vom Markt Angebotene unter EinschluB dazugehoriger Normen gibt es bereits. FUr ein umfassendes Verpackungshandbuch erscheint es heute noch zu frUh, weil sich zu viele Teilgebiete noch im Zustand der Empirie be finden, wogegen andere sich vorerst noch so stUrmisch entwickeln, daB sich darauf beziehende Texte rasch veralten, jedenfalls nicht samtliche Teilgebiete bereits einen tragfahigen wissenschaftlichen Unterbau besitzen. Dieser Tatbestand bedingte Einschrankungen, zunachst solche gebiets maBiger Natur. Es bot sich der Teilsektor 'Lebensmittelverpackung' an, einmal, weil es sich urn das umfassendste Verpackungsgebiet mit den vielseitigsten EinfluBfaktoren handelt, zum anderen, weil das Institut fUr Lebensmitteltechnologie und Verpackung (ILV) MUnchen, das ich 34 Jahre lang leitete, vor allem dieses Gebiet auf den Weg der Wissen schaft gebracht hat. Eine weitere Uberlegung beruhte auf der Erkenntnis, daB die Fortschrit te auf dem Gebiet der Lebensmittelverpackung vorwiegend von den For schungen der packstofferzeugenden, von den konstruktiven Losungen der packstoffverarbeitenden und von den Entwicklungen der Verpackungsma schinen-Industrie ausgingen, es aber diesem jungen Gebiet noch an 'all roundness' fehl t. Das Verbindende bilden immer die GPUJ7.dlagen. deren Verstandnis fUr eine systematische Weiterentwicklung die Voraussetzung bildet. Hier besteht auf dem internationalen BUchermarkt eine LUcke.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 320 pp. Deutsch.

Taschenbuch. Zustand: Neu. Neuware - Bei der Abfassung dieses Buches Uber die Verpackung war folgendes zu bedenken: Beschreibende VerpackungsbUcher Uber das vom Markt Angebotene unter EinschluB dazugehoriger Normen gibt es bereits. FUr ein umfassendes Verpackungshandbuch erscheint es heute noch zu frUh, weil sich zu viele Teilgebiete noch im Zustand der Empirie be finden, wogegen andere sich vorerst noch so stUrmisch entwickeln, daB sich darauf beziehende Texte rasch veralten, jedenfalls nicht samtliche Teilgebiete bereits einen tragfahigen wissenschaftlichen Unterbau besitzen. Dieser Tatbestand bedingte Einschrankungen, zunachst solche gebiets maBiger Natur. Es bot sich der Teilsektor 'Lebensmittelverpackung' an, einmal, weil es sich urn das umfassendste Verpackungsgebiet mit den vielseitigsten EinfluBfaktoren handelt, zum anderen, weil das Institut fUr Lebensmitteltechnologie und Verpackung (ILV) MUnchen, das ich 34 Jahre lang leitete, vor allem dieses Gebiet auf den Weg der Wissen schaft gebracht hat. Eine weitere Uberlegung beruhte auf der Erkenntnis, daB die Fortschrit te auf dem Gebiet der Lebensmittelverpackung vorwiegend von den For schungen der packstofferzeugenden, von den konstruktiven Losungen der packstoffverarbeitenden und von den Entwicklungen der Verpackungsma schinen-Industrie ausgingen, es aber diesem jungen Gebiet noch an 'all roundness' fehl t. Das Verbindende bilden immer die GPUJ7.dlagen. deren Verstandnis fUr eine systematische Weiterentwicklung die Voraussetzung bildet. Hier besteht auf dem internationalen BUchermarkt eine LUcke.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Free groups and graphs.- 2-Dimensional complexes and combinatorial presentations of groups.- Surfaces.- Planar discontinuous groups.- Automorphisms of planar groups.- On the complex analytic theory of riemann surfaces and planar discontinuous groups.- On the topological theory of surfaces. 348 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Further remarks on the elementary theory of formal power series rings.- Elimination of quantifiers for non semi-simple rings of characteristic p.- The quantifier elimination problem for rings without nilpotent elements and for semi-simple rings.- Existentially closed modules: Types and prime models.- Rings of continuous functions: Decision problems.- Weak partition relations, finite games, and independence results in Peano arithmetic.- Hensel fields in equal characteristic p>0.- On polynomials over real closed rings.- Les corps faiblement algebriquement clos non separablement clos ont la propriete d¿independance.- Horn-theories of abelian groups.- Two orderings of the class of all countable models of peano arithmetic.- Ramsey quantifiers in arithmetic.- Computational complexity of decision problems in elementary number theory.- Some diophantine nullstellens¿e.- A tree analysis of unprovable combinatorial statements.- A hierarchy of cuts in models of arithmetic.- Cofinal extension preserves recursive saturation.- Some model theory and number theory for models of weak systems of arithmetic.- Applications of complexity theory to o-definability Problems in arithmetic.- Minimally saturated models.- Totally categorical theories: Structural properties and the non-finite axiomatizability. 420 pp. Englisch, Französisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -1. The Linear Sum Assignment Problem.- 2. The Linear Bottleneck Assignment Problem.- 3. The Cardinality Matching Problem.- 4. The Sum Matching Problem.- 5. The Bottleneck Matching Problem.- 6. The Chinese Postman Problem.- 7. Quadratic Assignment Problems.- 8. QAP Heuristic 1: The method of increasing degree of freedom.- 9. QAP Heuristic 2: Cutting plane and exchange method.- 10. General Subroutines. 160 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Analytical chemistry of the recent years is strongly influenced by automation. Data acquisition from analytica~ instruments - and some times also controlling of instruments - by a computer are principally solved since many years. Availability of microcomputers made these tasks also feasible from the economic point of view. Besides these basic applications of computers in chemical measurements scientists developed computer programs for solving more sophisticated problems for which some kind of 'intelligence' is usually supposed to be necessary. Harm less numerical experiments on this topic led to passionate discussions about the theme 'which jobs cannot be done by a computer but only by human brain ~. If this question is useful at all it should not be ans wered a priori. Application of computers in chemistry is a matter of utility, sometimes it is a social problem, but it is never a question of piety for the human brain. Automated instruments and the necessity to work on complex pro blems enhanced the development of automatic methods for the reduction and interpretation of large data sets. Numerous methods from mathematics, statistics, information theory, and computer science have been exten sively investigated for the elucidation of chemical information; a new discipline 'chemometrics' has been established. Three different approaches have been used for computer-assisted interpretations of chemical data. 1. Heuristic methods try to formu late computer programs working in a similar way as a chemist would solve the problem. 2. 236 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -I was originally induced to think about barriers to entry by some re search done for Charles River Associates, Inc., Boston, on behalf of their client IBM Corporation, Armonk, N.Y. After the end of this re search project I continued to work on entry barriers and related is sues of market structure. The results of this effort are reported here. What I present is not a book in the traditional sense of the word. Due to other research and administrative obligations I could not, without substantial delay, present a more finished product. The rapid progress in the field of industrial organisation theory made me fear that my results could become obsolete if I further waited with their publica tion. I hope that the early presentation of a progress report rather than a much later publication of a finished product is not only in my interest but also in the interest of economics. 232 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Thus instead of being synonymous with specific procedures per formed at the level of the basal ganglia, stereotaxis is in fact a general diagnostic and therapeutic concept, which has as its aim the precise three-dimensional representation of the patient's brain in its entirety. This three-dimensional representation is based on anatomical, neuro radiological and other localizing information, the spatial integration Prof. Jean Talairach with friends and coworkers at the congress dinner in the Royaumont Abbey near Paris. (From left to right: Drs. ]. Bancaud, N. T. Zervas, B. Nashold, ]. Talairach, G. Szikla, F. Mundinger, P. Tournoux, ]. Peeker) of which allows a more precise 'anatomical' approach to the human brain and to the surgical management of localized pathologic proces ses. Literally, stereotaxis means 'orientation in space'. Taken in this general sense, all surgical procedures obviously should be stereo tactic, at least in their principle! Two of the main themes of our meeting, namely the topic of the first day, 'Surgery of Epilepsy' and that of the second 'Stereotactic Cerebral Irradiation' of small brain tumours correspond to this evolution toward a global 'whole brain' concept of stereotaxis. The same philosophy inspired the scientific efforts of the stereotactic group Introduction 3 of the Sainte Anne Hospital, under the leadership of its promoter, Professor Jean Talairach. This is the reason why the present Meeting is dedicated in honor of his scientific work. 456 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Reliability measures for computer systems.- Reliability analysis of some computer architectures.- Coverage-related reliability analysis of some computer architectures.- Evaluation of some computer architectures from the viewpoints of performance and information.- Reliability analysis of three-unit hybrid redundant systems. 140 pp. Englisch.

Taschenbuch. Zustand: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A large number of comprehensive publications has been devoted to the Antarctic, to its plant and animal life. It is therefore relatively easy to familiarize oneself with the current state of Antarctic research. Nothing comparable is available for the Arctic. The heterogeneity and richness of the northern polar regions seem to have discouraged any attempt at a synthethic approach. This book has evolved from an attempt to summarize the results of 15 years of ecological and physiological research work in the Arctic - mostly on Spitsbergen. The necessity of comparing our results and the ecological conditions of Spitsbergen with other arctic regions grew into a full-sized book on arctic animal ecology. It is not meant as an exhaustive survey ofthe relevant literature. Instead I have tried to show how closely the various fields of research are interwoven, how many questions can be solved if only notice is taken of fellow scientists and their results, and how much arctic animals have in common. This book would not have been possible without the helpfulness of many colleagues. Above all I should like to mention Professor Ronning and Professor Solem of Trondheim University (Norway), Professor Arnthor Gardasson of Reykjavik University (Iceland), Dr. NettIeship, Dr. Oliver and Dr. Ryder of Canada and Professor West of Fairbanks University (Alaska, USA). 264 pp. Englisch.