Skip to main content

Elsevier Science

Geomorphology: The Research Frontier and Beyond
Proceedings of the 24th Binghamton Symposium in Geomorphology, August 25, 1993
1st Edition
J.D. Vitek + 1 more
English
Perspectives on the future directions of research in geomorphology form the major theme of this volume. Ten geomorphologists were asked to "star-gaze", that is provide opinions about the future direction of their specialty. Each paper is supported by the literature that currently defines the research frontier.
Seismic Applications of Acoustic Reciprocity
1st Edition
J.T. Fokkema + 1 more
English
The seismic applications of the reciprocity theorem developed in this book are partly based on lecture notes and publications from Professor de Hoop. Every student Professor de Hoop has taught knows the egg-shaped figure (affectionately known as "de Hoop's egg") that plays such an important role in his theoretical description of acoustic, electromagnetic and elastodynamic wave phenomena.On the one hand this figure represents the domain for the application of a reciprocity theorem in the analysis of a wavefield and on the other hand it symbolizes the power of a consistent wavefield description of this theorem.The roots of the reciprocity theorem lie in Green's theorem for Laplace's equation and Helmholtz's extension to the wave equation. In 1894, J.W. Strutt, who later became Lord Rayleigh, introduced in his book The Theory of Sound this extension under the name of Helmholtz's theorem. Nowadays it is known as Rayleigh's reciprocity theorem.Progress in seismic data processing requires the knowledge of all the theoretical aspects of the acoustic wave theory. The reciprocity theorem was chosen as the central theme of this book as it constitutes the fundaments of the seismic wave theory. In essence, two states are distinguished in this theorem. These can be completely different, although sharing the same time-invariant domain of application, and they are related via an interaction quantity. The particular choice of the two states determines the acoustic application, in turn making it possible to formulate the seismic experiment in terms of a geological system response to a known source function.In linear system theory, it is well known that the response to a known input function can be written as an integral representation where the impulse response acts as a kernel and operates on the input function. Due to the temporal invariance of the system, this integral representation is of the convolution type. In seismics, the temporal behaviour of the system is dealt with in a similar fashion; however the spatial interaction needs a different approach. The reciprocity theorem handles this interaction by identifying one state with the spatial impulse function, also known as the Green's function, while the other state is connected with the actual source distribution. In general, the resulting integral representation is not a spatial convolution. Moreover, the systematic use of the reciprocity theorem leads to a hierarchical description of the seismic experiment in terms of increasing complexity. Also from an educational point of view this approach provides a hierarchy and the student learns to break down the seismic problem into constituent partial solutions.This book should contribute to the understanding that the reciprocity theorem is a powerful tool in the analysis of the seismic experiment.
Theoretical and Applied Rheology
Proceedings of the XIth International Congress on Rheology, Brussels, Belgium, August 17-21, 1992
1st Edition
P. Moldenaers + 1 more
English
More than 900 authors from over 35 countries contributed to the 1992 International Congress on Rheology. These proceedings volumes comprise 17 plenary and keynote papers, 250 oral contributions and some 200 poster presentations. All relevant aspects of rheology are covered, e.g., theoretical rheology, molecular theories, fluid mechanics, rheometry, experimental methods, foams, polymer solutions, polymer melts, rubber, solids, composites, biorheology, industrial rheology, polymer processing, food rheology and electrorheology, reflecting the development of rheology into a broad, multidisciplinary field of recognized academic and industrial relevance.
Proactive Maintenance for Mechanical Systems
1st Edition
E.C. Fitch
English
Written by Dr. E.C. Fitch, the book contains over 340 double column pages which include 400 figures and tables, a comprehensive bibliography, and index. There is no root cause of mechanical failure, known to the author, that has been ignored or left out. Nowhere in the world is this information put together in such a concise and comprehensive manner, and the book will serve as a reference and guide to designers, practising engineers, maintenance technicians, plant managers and operators who must design, maintain and operate fluid–dependent mechanical systems.
Evolutionary Paleobiology of Behavior and Coevolution
1st Edition
A.J. Boucot
English
This book is the culmination of many years of research by a scientist renowned for his work in this field. It contains a compilation of the data dealing with the known stratigraphic ranges of varied behaviors, chiefly animal with a few plant and fungal, and coevolved relations. A significant part of the data consists of ``frozen behavior'', i.e. those in which an organism has been preserved while actually ``doing'' something, as contrasted with the interpretations of behavior of an organism deduced from functional morphology, important as the latter may be.The conclusions drawn from this compilation suggest that both behaviors and coevolved relations appear infrequently, following which there is relative fixity of the relation, i.e., two rates of evolution, very rapid and essentially zero. This conclusion complies well with the author's prior conclusion that community evolution followed the same rate pattern. In fact, communities are regarded here, as in large part, expressions of both behavior and coevolved relations, rather than as random aggregates controlled almost wholly by varied, unrelated physical parameters tracked by organisms, i.e., the concept that communities have no biologic reality, being merely statistical abstractions.The book is illustrated throughout with more than 400 photographs and drawings. It will be of interest to ethologists, evolutionists, parasitologists, paleontologists, and palaeobiologists at research and post-graduate levels.
Chemistry and Analysis of Hop and Beer Bitter Acids
1st Edition
Volume 27
M. Verzele + 1 more
English
Largely based on laboratory work, the volume opens with a review on hops in general, while the bulk of the book covers the chemistry of the bitter acids of hop and beer. Practical, fully detailed procedures on the preparation and/or the separation of many of the compounds discussed are included. There is a chapter included on the complicated issue of bitter acid analysis, and several on the high-efficiency liquid chromatography of hop bitter acids.Bearing in mind the lack of literature produced recently in this field, the book is an excellent review of the present state of knowledge, and gives a large list of topics pointing to worthwhile studies for the future. The indexes provided will serve as a reference library-dictionary to hops, hop and beer bitter acids chemistry and analysis.
Bridge Technology Report
1st Edition
Architecture Technology Architecture Technology Corpor
English
Please note this is a Short Discount publication.As LANs have proliferated, new technologies and system concepts have come to the fore. One of the key issues is how to interconnect networks. One means of interconnection is to use a 'bridge'. Other competing technologies are repeaters, routers, and gateways. Bridges permit traffic isolation, connect network segments together and operate at the MAC layer. Further, because they operate at the MAC layer, they can handle a variety of protocols such as TCP/IP, SNA, and X.25.This report focuses on the specific technology of bridging two networks and the competing approaches of spanning tree [backed by DEC] and the source route technology [backed by IBM]. Both of these approaches are compared and their strengths and weaknesses described and contrasted. Other approaches that combine the two approaches as well as novel approaches to this problem are described.In a world of increasing complexity of networks, it is imperative that the user understand the possible means of bridging two networks and the capabilities of the various vendors products. The report focuses itself on developing that critical understanding.
Modelling in Ecotoxicology
1st Edition
Volume 16
S.E. Jorgensen
English
Ecotoxicology is the science of toxic substances in the environment and their impact on living organisms. Today we use many more chemicals in everyday life than we did 30-40 years ago. Our knowledge of the fate and effect of such chemicals in the environment has not yet followed the rate of chemical innovation in spite of our expanding knowledge of ecotoxicology. About 50,000 different chemicals are produced on an industrial scale, but we have only sufficient data to evaluate the environmental consequences of a few per cent of these. The need for ecotoxicological knowledge has never been more pronounced than it is today. Even more resources must be allocated in this field in the near future, if we are to be able to cope with the threat of more toxic chemical compounds in our environment.This book outlines the state of the art of modelling the fate and effects of toxic substances in the environment. Modelling in ecotoxicology differs from modelling in other fields by the great lack of data. The quality of the models is very dependent on the parameters used, and as we do not have a wide knowledge of parameters in ecotoxicological processes, good parameter estimation methods are crucial for ecotoxicolocal models. A comprehensive review of available parameter estimation methods is therefore included in this volume. Model examples and case studies have also been included to illustrate the difficulties and short comings in practical modelling.
Freshwater Ecosystems
Modelling and Simulation
1st Edition
A.H. Gnauck + 1 more
English
Ecosystem analysis and ecological modelling is a rapidly developing interdisciplinary branch of science used in theoretical developments in ecology and having practical applications in environmental protection. In this book, the authors introduce new holistic, particularly cybernetic, concepts into ecosystem theory and modelling, and provide a concise treatment of mathematical modelling of freshwater ecosystems which covers methods, subsystem models, applications and theoretical developments.Part I begins with a brief introduction to the principles of systems theory and their applications to ecosystems, and provides a summary of various methods of systems analysis. In Part II emphasis is laid on the pelagic processes in standing water, characterised by relatively uninvolved structures from which models can be readily developed. Part III describes applications of the technique of modelling to solutions of theoretical and practical problems, with different modelling methods and objectives being used in the various chapters. More recent developments in the methods and theory of ecosystem modelling are covered in Part IV which also includes a discussion of future trends. The book is addressed to practising ecologists and engineers in the fields of ecology, limnology, environmental protection, and water quality managements, as well as to graduate/post-gradua... university students in science and engineering. Students and researchers involved in environmental applications of mathematics and cybernetics will also find the book of interest.
Mineral Economics
Development and Management of Natural Resources
1st Edition
Volume 20
O. Rudawsky
English
Although profitable development and exploitation of natural resources has been, and still remains, the goal of many individuals and firms within the extractive industries, several new goals must also be considered, the foremost of which is the wise management of the already discovered stocks of renewable and nonrenewable natural resources. This aspect has become of vital importance for society as a whole.It is this dual objective - the economic feasibility on behalf of private interests, and the efficient development and utilization of natural resources as viewed from the societal point of view - that is covered in this book. The material presented is based on many published and unpublished sources, and serves to demonstrate the basic principles associated with the economics and management of mineral resources. Rather than attempting to carry on an in-depth analysis of the various topics, the author has provided a broad coverage of the basic concepts and their applications in real-life occurrences. For those interested in more intensive analysis, suggested additional selected readings and references are provided.The book is written as an introductory-level textbook in mineral economics. Advanced students in mineral engineering programs, economics, and business administration curricula, with a particular interest in economic analysis of mineral and energy activities may find this book an appropriate starting-point. Likewise, first-year graduate students in engineering programs, resource economics, mineral economics, natural resource management, environmental sciences, and law will find that the book provides a fundamental understanding of the basic concepts of mineral economics and how they relate to the general economic and management theories.

Browse by Publisher