Bücher veröffentlicht von Springer Netherlands

The bulk of known results in spectral and scattering theory for Schrodinger operators has been derived by time-independent (also called stationary) methods, which make extensive use of re­ solvent estimates and the spectral theorem. In very recent years there has been a partial shift of emphasis from the time-indepen­ dent to the time-dependent theory, due to the discovery of new, essentially time-dependent proofs of a fair number of the principal results such as asymptotic completeness, absence of singularly con­ tinuous spectrum and properties of scattering cross sections. These new time-dependent arguments are somewhat simpler than the station­ ary ones and at the same time considerably closer to physical in­ tuition, in that they are based on a rather detailed description of the time evolution of states in configUration space (whence the designation "geometric methods" used by some authors). It seemed interesting to me to present some of these new meth­ ods from a strictly time-dependent point of view, by considering as the basic mathematical object strongly continuous unitary one­ parameter groups and avoiding the spectral theorem completely. The present volume may be viewed as an essay in this spirit. It is an extended version of a course taught in 1979 at the University of Geneva to undergraduate students enrolled in mathematical physics.

The problem of deriving irreversible thermodynamics from the re­ versible microscopic dynamics has been on the agenda of theoreti­ cal physics for a century and has produced more papers than can be digested by any single scientist. Why add to this too long list with yet another work? The goal is definitely not to give a gen­ eral review of previous work in this field. My ambition is rather to present an approach differing in some key aspects from the stan­ dard treatments, and to develop it as far as possible using rather simple mathematical tools (mainly inequalities of various kinds). However, in the course of this work I have used a large number of results and ideas from the existing literature, and the reference list contains contributions from many different lines of research. As a consequence the reader may find the arguments a bit difficult to follow without some previous exposure to this set of problems.

The Prague Conferences on Information Theory, Statistical Decision Functions, and Random Processes have been organized every three years since 1956. During the eighteen years of their existence the Prague Conferences developed from a platform for presenting results obtained by a small group of researchers into a probabilistic congress, this being documented by the increasing number of participants as well as of presented papers. The importance of the Seventh Prague Conference has been emphasized by the fact that this Conference was held jointly with the eighth European Meeting of Statisticians. This joint meeting was held from August 18 to 23, 1974 at the Technical University of Prague. The Conference was organized by the Institute of Information Theory and Automation of the Czechoslovak Academy of Sciences and was sponsored by the Czechoslovak Academy of Sciences, by the Committee for the European Region of the Institute of Mathematical Statistics, and by the International As sociation for Statistics in Physical Sciences. More than 300 specialists from 25 countries participated in the Conference. In 57 sessions 164 papers (including 17 invited papers) were read, 128 of which are published in the present two volumes of the Transactions of the Conference. Volume A includes papers related mainly to probability theory and stochastic processes, whereas the papers of Volume B concern mainly statistics and information theory."

This book contains the proceedings of IAU Symposium No. 151 `Evolutionary Processes in Interacting Binary Stars,' which was held from 5 to 9 August 1991 in Cordóba, Argentina. The primary aim of this conference was to review and evaluate our current understanding of the evolutionary processes in wide variety of interacting binary stars from their births to their deaths. Subjects included the formation of binaries, mass flow and transfer, accretion processes, and binaries with collapsed components, such as novae, X-ray binaries and binary pulsars. As the field covered is both broad and diverse, there were in all thirty-seven invited talks; sixty-two contributed papers were also presented. In addition, these proceedings contain comments from a panel discussion of the major unsolved problems of interacting binary stars.

Based on the Lectures given during the Eurocourse on `Practical Applications of Quantitative Structure-Activity (QSAR) in Environmental Chemistry and Toxicology' held at the Joint Research Centre Ispra, Italy, June 11--15, 1990

This highly detailed handbook is a resource for those entering the field of stress analysis and instrumentation. The authors were brought together to provide their expert experience and have presented many practical solutions.

This book should be of interest to general science, physics and physical sciences courses.

This book, the second in Chapman & Hall's Wildlife, Ecology and Behaviour Series, focuses on studies of both European and Siberian roe deer to provide an authoritative insight into the taxonomy, ecology, feeding patterns, social behaviour and population dynamics. It uses this information to tackle the fascinating question of what environmental factors underly ranging patterns and trigger migratory behaviour in some populations but not in others, adding new perspectives and depths to our understanding of general issues in behavioural ecology.

Proceedings of the 4th Pannonian Symposium on Mathematical Statistics, Bad Tatzmannsdorf, Austria, 4-10 September 1983, Volume A.

Proceedings of the 6th International Symposium on Insect-Plant Relationships (Pau 1986)

Proceedings of a Workshop held at the Scuola Normale Superiore, Pisa, Italy on December 12-15, 1980

"The concept of global justice makes visible how we citizens of affluent countries are potentially implicated in the horrors so many must endure in the so-called less developed countries.Distinct conceptions of global justice differ in their specific criteria of global justice. However, they agree that the touchstone is how well our global institutional order is doing, compared to its feasible alternatives, in regard to the fundamental human interests that matter from a moral point of view.We are responsible for global regimes such as the global trading system and the rules governing military interventions. These institutional arrangements affect human beings worldwide, for instance by shaping the options and incentives of governments and corporations. Alternative paths of globalization would have differed in how much violence, oppression, and extreme poverty they engender. And global institutional reforms could greatly enhance human rights fullfillment in the future.The importance of this global justice approach reaches well beyond philosophy. It helps ordinary citizens evaluate their options and their responsibility for global institutional factors, and it challenges social scientists to address the causes of poverty and hunger that act across borders.The present volume addresses four main topics regarding global justice: The normative grounds for claims regarding the global institutional order, the substantive normative principles for a legitimate global order, the roles of legal human rights standards, and some institutional arrangements that may make the present world order less unjust.All royalties from this book have been assigned to Oxfam."

'Et moi, ... , si j'avait su comment en revenir, One service mathematics has rendered the je n'y serais point aile.' human race. It has put common sense back Jules Verne where it belongs, on the topmost shelf next to the dusty canister labelled 'discarded n- sense'. The series is divergent; therefore we may be able to do something with it. Eric T. Bell O. Heaviside Mathematics is a tool for thought. A highly necessary tool in a world where both feedback and non­ linearities abound. Similarly, all kinds of parts of mathematics serve as tools for other parts and for other sciences. Applying a simple rewriting rule to the quote on the right above one finds such statements as: 'One service topology has rendered mathematical physics ... '; 'One service logic has rendered com­ puter science .. .'; 'One service category theory has rendered mathematics .. .'. All arguably true. And all statements obtainable this way form part of the raison d'etre of this series.

This book attempts to describe runoff, infiltration and subsurface flow of water by adopting a holistic approach rather than restricting itself to a particular section of the hydrological cycle. It includes reports on recent studies which have led to a better understanding of a variety of problems prevailing in semi-arid and arid zones. Emphasis has been put on studies which incorporate the use of advanced applied techniques developed for dealing with these water problems. This has been done with the hope of providing guidance in solving special problems of water supply and safe reuse of wastes, liable to arise during future development in these zones. Audience: This volume is of value for experts from academia, consultancies and water resources planning and management institutes interested in hydrological problems in semi-arid and arid regions.

"If simple perfect laws uniquely rule the universe, should not pure thought be capable of uncovering this perfect set of laws without having to lean on the crutches of tediously assembled observations? True, the laws to be discovered may be perfect, but the human brain is not. Left on its own, it is prone to stray, as many past examples sadly prove. In fact, we have missed few chances to err until new data freshly gleaned from nature set us right again for the next steps. Thus pillars rather than crutches are the observations on which we base our theories; and for the theory of stellar evolution these pillars must be there before we can get far on the right track. " These words written by Martin Schwarzschi1d in his famous book en­ titled "Structure and Evolution of the Stars"(1958) remind us how necessary and fruitful is the interplay of stellar evolution theory and observations. Clearly, observations are the great censor by their possibility of confirming or contradicting theoretical constructions. In addition, they have a driving role: new and sometimes unexpected facts may give rise to progressive ideas and stimulate further theoretical developments. In turn, theory, in its major role of sifting out and placing the facts in a logical sequence based on physical laws, must also be predictive and indicate new and pertinent observations to be undertaken.

Polymers, main components of plastics and rubbers, are being discarded in increasing quantities. But this waste can also be considered as 'plastic gold'. Public concern, coupled with the inherent value of the material, means that recycling is imperative. The present book presents a survey of current knowledge in the form of case studies, including current legal and educational issues. Topics covered also include regulation and practice in NATO countries, the economics of recycling, the reprocessing of single polymers and mixtures, and future prospects and strategies. Audience: Vital reading for all polymer scientists, technicians and engineers.

Proceedings of the EC Contractors' Meeting held in Brussels, June 1-3, 1983

The last major conference on infrared astronomy was the IAU Symposium No. 96 in June 1980. Since then, the discipline has continued to mature and to contribute to all branches of astrophysics. One particular area of growth has been in spectroscopic capabilities at all infrared wavelengths. The purpose of the Symposium in Toledo was to review the scientific questions to be addressed via infrared spectroscopy and to provide, in the proceedings, a useful summary of the field. The sensitivity of infrared spectroscopic observations is still generally limited by detector characteristics or by thermal background radiation. However in recent years improvements in detector technology together with developments in spectroscopic instrumentation have made possible both quite detailed spectroscopy of the brighter members of many classes of galactic sources and also begun to open up some infrared spectroscopy of extragalactic sources. The potential of the field in the next decade or two is clear. The lRAS mission has completed one of the pre-requisites, namely an all-sky photometric survey. Major space missions utilising cryogenic infrared telescopes have been approved in Europe (ISO) and seem likely in the USA (SIRTF); plans for space submillimeter telescopes are firming up. On the ground large telescopes optimized for infrared observations are now in operation at high altitude sites and specialized submillimeter facilities are under construction. The particular advantages of planned, very large telescopes for infrared observations are widely accepted.