elsevier bv jun 1993 (6 Ergebnisse)

Buch. Zustand: Neu. Neuware - Historical analysis reveals that perceptual theories and models are doomed to relatively short lives. The most popular contemporary theories in perceptual science do not have as wide an acceptance among researchers as do some of those in other sciences. To understand these difficulties, the authors of the present volume explore the conceptual and philosophical foundations of perceptual science. Based on logical analyses of various problems, theories, and models, they offer a number of reasons for the current weakness of perceptual explanations. New theoretical approaches are also proposed. At the end of each chapter, dicussants contribute to the conclusions by critically examining the authors' ideas and analyses.

Buch. Zustand: Neu. Neuware - The intent in initiating this volume was to bring together a series of essays which would define our present understanding of the endosome and lysosome and their interrelationship. The editors deliberately encouraged the contributors to be speculative; to strive to put order to the 'real' world of incomplete and sometimes conflicting data. Seeing science from the laboratory bench can often be like viewing an impressionistic painting from up close; a series of paint dabs with no apparent order. The contributors to this volume were asked to step back and leave the reader with a sense of the whole as well as the detail. To the extent that this has happened, the credit should go to the individual authors. Our understanding of endosomes and lysosomes has undergone a molecular revolution over the last decade. Hence, we now know much about the molecular features required for internalization of an endocytic receptor, or the function of mannose 6-phosphate receptors in the transport of lysosomal enzymes. We can trace and follow the flow of molecules. In this volume current molecular knowledge concerning the function and relationship of endosomes and lysosomes is presented. Because of this vast increase in knowledge of molecules, we have realized that endosomes in particular are very ephemeral organelles. In fact, endosomes may well not be discrete entities but rather continuously changing and evolving in their molecular composition. The dynamic nature of the relationship between endosomes and lysosomes is the unifying focus of the genetic, biochemical, microscopic, and molecular biological approaches described in the chapters which follow.

Buch. Zustand: Neu. Neuware - The area of intelligent and adaptive user interfaces has been of interest to the research community for a long time. Much effort has been spent in trying to find a stable theoretical base for adaptivity in human-computer interaction and to build prototypical systems showing features of adaptivity in real-life interfaces. To date research in this field has not led to a coherent view of problems, let alone solutions. A workshop was organized, which brought together a number of well-known researchers in the area of adaptive user interfaces with a view todevelop a coherent view of the results accomplished in the fieldorganize basic ideas which might lead to a more general methodology for adaptivity in order to overcome the problem of specialized, non-generalizable solutions, anddiscuss possible areas for future research in the field and to define criteria for the selection of the most promising directions of such research.The results of the workshop are presented in this volume. The authors have collected papers from the participants which describe both their research and their views on questions which were dealt with during the workshop. A state-of-the-art report and taxonomy for the field of adaptive interfaces and a discussion summary are also included in this volume.

Buch. Zustand: Neu. Neuware - The most significant articles from each of the fields represented at the conference on Work with Display Units 1992 are presented in this volume. Such topics are:¿ The newest occupational health research results, partially backed by extensive epidemiological studies, concerning radiation, eye fatigue, stressors and diseases of the musculoskeletal apparatus and the medical surveillance of workers with display units.¿ Ergonomic studies pertaining to design improvements.¿ Support of the human operator by intelligent user surfaces and interfaces, demonstrated by experimental results.¿ The latest developments in input devices including virtual reality as well as multi-media, multi-screen and multi-language human computer interaction.¿ Concepts of group work and organizational stress in combination with its psychophysical and psychophysiological evaluation, especially the problem of stress-strain regulation, adaptation and long-term effects on recovery and recreation.¿ Discussion of hypertext and hypermedia as well as applications of computer aided techniques for knowledge acquisition, knowledge structuring and knowledge use for decisions and working processes in different contexts.¿ New organizational concepts such as Chaos Theory and new methods of work design in industry such as Kansei Engineering.¿ Discussion of the International Standardization and EC regulations.

Taschenbuch. Zustand: Neu. Neuware - Capillary Electrophoresis (CE) has had a very significant impact on the field of analytical chemistry in recent years as the technique is capable of very high resolution separations, requiring only small amounts of samples and reagents. Furthermore, it can be readily adapted to automatic sample handling and real time data processing. Many new methodologies based on CE have been reported. Rapid, reproducible separations of extremely small amounts of chemicals and biochemicals, including peptides, proteins, nucleotides, DNA, enantiomers, carbohydrates, vitamins, inorganic ions, pharmaceuticals and environmental pollutants have been demonstrated. A wide range of applications have been developed in greatly diverse fields, such as chemical, biotechnological, environmental and pharmaceutical analysis.This book covers all aspects of CE, from the principles and technical aspects to the most important applications. It is intended to meet the growing need for a thorough and balanced treatment of CE. The book will serve as a comprehensive reference work. Both the experienced analyst and the newcomer will find the text useful.

Buch. Zustand: Neu. Neuware - Volume 7 of the Handbook of Magnetic Materials provides an overview of some of the most exciting topics in magnetism today.