Springer jul 1989 (11 Ergebnisse)
- Softcover
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Taschenbuch. Zustand: Neu. Neuware - Computational synthetic geometry deals with methods for realizing abstract geometric objects in concrete vector spaces. This research monograph considers a large class of problems from convexity and discrete geometry including constructing convex polytopes from simplicial complexes, vector ge…ometries from incidence structures and hyperplane arrangements from oriented matroids. It turns out that algorithms for these constructions exist if and only if arbitrary polynomial equations are decidable with respect to the underlying field. Besides such complexity theorems a variety of symbolic algorithms are discussed, and the methods are applied to obtain new mathematical results on convex polytopes, projective configurations and the combinatorics of Grassmann varieties. Finally algebraic varieties characterizing matroids and oriented matroids are introduced providing a new basis for applying computer algebra methods in this field. The necessary background knowledge is reviewed briefly. The text is accessible to students with graduate level background in mathematics, and will serve professional geometers and computer scientists as an introduction and motivation for further research.
Sprache: Englisch
Verlag: Springer Jul 1989 1989
Serie: Advanced Studies in Theoretical and Applied Econometrics, Buch 40 von 54. Buch 40 von 54 - Advanced Studies in Theoretical and Applied Econometrics
- Hardcover
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EUR 157,86
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Buch. Zustand: Neu. Neuware - This book proposes a new methodology for the selection of one (model) from among a set of alternative econometric models. Let us recall that a model is an abstract representation of reality which brings out what is relevant to a particular economic issue. An econometric model is also an analytical c…haracterization of the joint probability distribution of some random variables of interest, which yields some information on how the actual economy works. This information will be useful only if it is accurate and precise; that is, the information must be far from ambiguous and close to what we observe in the real world Thus, model selection should be performed on the basis of statistics which summarize the degree of accuracy and precision of each model. A model is accurate if it predicts right; it is precise if it produces tight confidence intervals. A first general approach to model selection includes those procedures based on both characteristics, precision and accuracy. A particularly interesting example of this approach is that of Hildebrand, Laing and Rosenthal (1980). See also Hendry and Richard (1982). A second general approach includes those procedures that use only one of the two dimensions to discriminate among models. In general, most of the tests we are going to examine correspond to this category.
- Softcover
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EUR 159,46
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Taschenbuch. Zustand: Neu. Neuware - The enthusiastic response to the Dictionary has prompted this second substantially enlarged, revised and updated edition. It now contains essential details of the lives of over 2000 women from all periods, cultures and walks of life - from queens to cooks, engineers to entertainers, pilots to… poisoners. The new entries include women who have hit the headlines in the past five years - from Cory Aquino to Madonna - but the historical coverage has also been broadened in response to new research and a special new feature is the extended treatment of women from Third World countries. With subsections for further reading, comprehensive subject index and bibliographical survey, the Macmillan Dictionary of Women's Biography is an invaluable reference source - and a fascinating bed-time read.
- Hardcover
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EUR 222,67
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Buch. Zustand: Neu. Neuware - If nothing else, the twelve papers assembled in this volume should lay to rest the idea that the interesting debates about the nature of science are still being conducted by 'internalists' vs. 'externalists,'' rationalists' vs. 'arationalists, n or even 'normative epistemologists' vs. 'empirical soc…iologists of knowledge. ' Although these distinctions continue to haunt much of the theoretical discussion in philosophy and sociology of science, our authors have managed to elude their strictures by finally getting beyond the post-positivist preoccupation of defending a certain division of labor among the science studies disciplines. But this is hardly to claim that our historians, philosophers, sociologists, and psychologists have brought about an 'end of ideology,' or even an 'era of good feelings,' to their debates. Rather, they have drawn new lines of battle which center more squarely than ever on practical matters of evaluating and selecting methods for studying science. To get a vivid sense of the new terrain that was staked out at the Yearbook conference, let us start by meditating on a picture. The front cover of a recent collection of sociological studies edited by one of us (Woolgar 1988) bears a stylized picture of a series of lined up open books presented in a typical perspective fashion. The global shape comes close to a trapezium, and is composed of smaller trapeziums gradually decreasing in size and piled upon each other so as to suggest a line receding in depth. The perspective is stylized too.
- Hardcover
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Buch. Zustand: Neu. Neuware - This book grew out of the conviction that the preparation and management of large-scale technological projects can be substantially improved. We have witnessed the often unhappy course of societal and political decision making concerning projects such as hazardous chemical installations, novel types… of electric power plant or storage sites for solid wastes. This has led us to believe that probabilistic risk analysis, technical reliability analysis and environm,ental impact analysis are necessary but insufficient for making acceptable, and justifiable, social decisions about such projects. There is more to socio-technical decision making than applying acceptance rules based on neglige ably low accident probabilities or on maximum credible accidents. Consideration must also be given to psychological, social and political issues and methods of decision making. Our conviction initially gave rise to an international experts' workshop titled 'Social decision methodology for technological projects' (SDMTP) and held in May 1986 at the University of Groningen, the Netherlands, at a time when Cvetkovich spent a sabbatical there. The work shop - aimed at surveying the issues and listing the methods to address them - was the first part of an effort whose second part was directed at the production of this volume. Plans called for the book to deal systematically with the main problems of socio-technical decision making; it was to list a number of useful approaches and methods; and it was to present a number of integrative conclusions and recommendations for both policy makers and methodologists.
- Hardcover
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Buch. Zustand: Neu. Neuware - Twenty years of numerical syntaxonomy.- An outline for data analysis in phyto sociology: past and present.- Influences of the individualistic concept of vegetation on syntaxonomy.- Similarity measures for structured data: a general framework and some applications to vegetation data.- New combinatori…al clustering methods.- On the use of grammars in vegetation analysis.- A new numerical solution to traditional phytosociological tabular classification.- Syntaxonomy of the Onopordum acanthium communities in temperate and continental Europe.- A coenocline of the high-ranked syntaxa of ruderal vegetation.- Ecological species groups in forest communities in South Belgium.- On the delimitation of the Mesobromion and Xerobromion in Belgium and French Lorraine.- Classification of South Swedish Isoetid vegetation with the help of numerical methods.- Syntaxonomy of the Australian mangai refined through iterative ordinations.- Numerical revision of the Fagion illyricum alliance.- Numerical syntaxonomy of the tall-forb and tall-grass communities in the Tatra Mountains.- Partitioning and elevation gradient of vegetation from southeastern Ethiopia by probabilistic methods.- Numerical phytosociology of the subalpine belt of the Kazbegi region, Caucasus, USSR.- Phytogeographical analysis of a treeline community in Northern Yukon (NW-Canada).
Sprache: Englisch
Verlag: Springer Us Jul 1989 1989
Serie: Cancer Treatment and Research, Buch 107 von 180. Buch 107 von 180 - Cancer Treatment and Research
- Hardcover
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EUR 303,66
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Buch. Zustand: Neu. Neuware - Where do you begin to look for a recent, authoritative article on the diagnosis or management of a particular malignancy The few general oncology text books are generally out of the date. Single papers in specialized journals are informative but seldom comprehensive; these are often preliminary repo…rts on a very limited number of patients. Certain general journals frequently publish good in depth reviews of cancer topics, and published symposium lectures are often the best overviewes available. Unfortunately, these reviews and supplements appear sporadically, and the reader can never be sure when a topic of special interest will be covered. Cancer Treatment and Research is a series of authoritative volumes which aim to meet this need. it is an attempt to establish a critical mass of oncology literature covering virtually all oncology topics, revised frequently to keep the coverage up to date, easily available on a single library shelf or by a single personal subscription. We have approached the problem in the following fashion. First, by dividing the oncology literature into specific subdivisions such as lung cancer, genito urinary cancer, pediatric oncology, etc. Second, by asking eminent authori ties in each of these areas to edit a volume on the specific topic on an annual or biannual basis. Each optic and tumor type is covered in a volume appear ing frequently and predictably, discussing current diagnosis, staging, markers, all forms of treatment modalities, basic biology, and more.
Sprache: Englisch
Verlag: Springer Us Jul 1989 1989
Serie: Cancer Treatment and Research, Buch 136 von 180. Buch 136 von 180 - Cancer Treatment and Research
- Hardcover
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Buch. Zustand: Neu. Neuware - The last volume dealing with lung cancer in this series in Cancer Treatment and Research was published in 1986 and entitled Lung Cancer: Basic and Clinical Aspects. The present book continues the outline of the previous volume by presenting up-to-date information on lung cancer in critical reviews o…f new important basic and clinical concepts of lung cancer. The present volume has broadened the scope by also including chapters dealing with issues such as epidemiology, prophylaxis, and histopathology of lung cancer. The content of the book thus reflects the increasing awareness of a global disease that is more and more in focus, not only scientifically but also politically. The latter fact results increasingly in changes in health legisla tion, with prevention measures influencing everyday life. The great interest in the disease is natural, considering that more than one patient dies from lung cancer every minute globally. The first chapter is from the Cancer Unit, WHO, Geneva, and describes in detail the epidemiologic features of lung cancer, which is the second most frequent cancer in the world with 660,500 new cases annually; it will soon surpass stomach cancer as the leader. Thirty-one percent of the cases occur in developing countries, where the increase is especially dramatic.
- Hardcover
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Buch. Zustand: Neu. Neuware - When leaving the Victoria airport the day before our Colloquium, I saw a van of the Dunsmuir Lodge marked with big letters which I read as 'Alcohol Colloquium'. I do often make such blunders because of the global, casual, and careless way in which I read various ads, and checked myself quickly to re…ad it correctly as 'Algol Colloquium'. Millions of fellow citizens could easily make the same mistake, and no apology could be expected. Even I read and hear the word alcohol more frequently than Algol, although I must say that Algols have given me more pleasure and fewer headaches over the years; in that, however, I may be a singularity, and possibly a pitiful one at that. Being appointed Chairman of the Scientific Organizing Committee, I may be deemed to be a purer' Algolist' than other investigators, although my range of active interests is much broader; and the same is true about all the 28 invited speakers and all the other participants of the Colloquium. Our interest are strongly diversified, but there are several good reasons that brought us together at this Colloquium.
- Hardcover
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EUR 318,78
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Buch. Zustand: Neu. Neuware - This edition is the labor of many enthousiastic scientists who were invited to teach at a NATO Advanced Study Institute on the 'Spectroscopy of Inorganic Bioactivators' which took place on August 20 -30, 1988 at Club Poseidon, Loutraki, Greece. In this book the subjects were taught through several w…ell prepared lectures. These lectures stretch the fact that scientific knowledge is the painfully gathered product of many wonderful human minds. I made an attempt to divide the lectures into separate chapters, however, there is interaction among the lectures, as I hope the book will show. First, there is introductory on an lecture supercomputing and super computers and their applications to solving structures of biological molecules followed by a state-of-the-art x-ray diffraction method at pi co second times. Important new advances have been made in x-ray diffraction analysis at picosecond times, in Hadamard spectroscopy, in micro-Raman spectroscopy in the Near Infrared region (1. 01 ~m) and remote sensing by Fourier Transform Infrared Spectroscopy. The chapters that follow include applications of spectroscopic technique to vii viii biologically important molecules, such as, DNA, proteins, membranes, and metal ion-biological molecule interactions. I would like to express my thanks to all the authors for their contributions and their cooperation in submitting their manuscript. I also thank the NATO Science Committee for making this possible. The field looks very promising for significant and exciting developments in the application of spectroscopy to bioactivators.
- Hardcover
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Buch. Zustand: Neu. Neuware - Various brain areas of mammals can phyletically be traced back to homologous structures in amphibians. The amphibian brain may thus be regarded as a kind of 'microcosm' of the highly complex primate brain, as far as certain homologous structures, sensory functions, and assigned ballistic (pre-planne…d and pre-pro grammed) motor and behavioral processes are concerned. A variety of fundamental operations that underlie perception, cognition, sensorimotor transformation and its modulation appear to proceed in primate's brain in a way understandable in terms of basic principles which can be investigated more easily by experiments in amphibians. We have learned that progress in the quantitative description and evaluation of these principles can be obtained with guidance from theory. Modeling - supported by simulation - is a process of transforming abstract theory derived from data into testable structures. Where empirical data are lacking or are difficult to obtain because of structural constraints, the modeler makes assumptions and approximations that, by themselves, are a source of hypotheses. If a neural model is then tied to empirical data, it can be used to predict results and hence again to become subject to experimental tests whose resulting data in tum will lead to further improvements of the model. By means of our present models of visuomotor coordination and its modulation by state-dependent inputs, we are just beginning to simulate and analyze how external information is represented within different brain structures and how these structures use these operations to control adaptive behavior.
