Springer feb 1997 (5 Ergebnisse)

Buch. Zustand: Neu. Neuware - Human and machine discovery are gradual problem-solving processes of searching large problem spaces for incompletely defined goal objects. Research on problem solving has usually focused on searching an `instance space' (empirical exploration) and a `hypothesis space' (generation of theories). In scientific discovery, searching must often extend to other spaces as well: spaces of possible problems, of new or improved scientific instruments, of new problem representations, of new concepts, and others. This book focuses especially on the processes for finding new problem representations and new concepts, which are relatively new domains for research on discovery. Scientific discovery has usually been studied as an activity of individual investigators, but these individuals are positioned in a larger social structure of science, being linked by the `blackboard' of open publication (as well as by direct collaboration). Even while an investigator is working alone, the process is strongly influenced by knowledge and skills stored in memory as a result of previous social interactions. In this sense, all research on discovery, including the investigations on individual processes discussed in this book, is social psychology, or even sociology. …

Buch. Zustand: Neu. Neuware - The potential impact of global warming on water resources is of major national and international concern. This book draws together for the first time research work aimed at providing global and regional syntheses of the likely hydrological effects of climate change over the coming century. The chapters in this volume range from pioneering assessments at continental and sub-continental scale, to the development of new methodological approaches for down-scaling climatic predictions, analyses of recent trends in hydrometric data, and reviews of ongoing research on regional hydrological impacts. Although it is still early days for climatic impact prediction, the book demonstrates considerable unaniminity in its general conclusions. Audience: This book will be of major interest to water resource planners and researchers involved in assessing the impact of climate change. It also provides valuable material for lecture courses in hydrology, water resources and climatic impact.…

Buch. Zustand: Neu. Neuware - ''' This book has been written as a guide to the management and use of formulated feeds in intensive fish and shrimp culture. While its focus is on the use of commercially pro duced feeds in intensive production systems, it is anticipated that many of the practical issues covered will be of equal interest to those fish farmers who make their own feeds and to those who use formulated feeds in less intensive systems. Feeds and feeding are the major variable operating costs in intensive aquaculture and the book is primarily in tended to aid decision making by fish farm managers in areas of feeding policy. The dramatic increases in aquaculture production seen over the past 15 years have been made possible, in large part, by gains in our understanding of the food and feed ing requirements of key fish and shrimp species. A global aquaculture feeds industry has developed and a wide range of specialist feeds is now sold. The new options in feeds and feeding systems, which are becoming available, necessitate continual review by farmers of their feeding policies, where choices must be made as to appropriate feed types and feeding methods. While growth rates and feed conversion values are the prime factors of interest to farmers, other important issues, such as product qualiry and environmental impacts of farm effluents, are also directly related to feed management practices.…

Buch. Zustand: Neu. Neuware - Aldehyde Dehydrogenase. Crystal Structure of a Class 3 Aldehyde Dehydrogenase at 2.6angstrom Resolution; Z-J. Liu, et al. Conserved Residues in the Aldehyde Dehydrogenase Family: Locations in the Class 3 Tertiary Structure; J. Hempel, et al. Class 3 Aldehyde Dehydrognease: A View from the Hills; R. Lindahl, et al. Human Corneal and Lens Aldehyde Dehydrogenases: Purification and Properties of Human Lens ALDH1 and Differential Expression as Major Soluble Proteins in Human Lens (ALDH1) and Cornea (ALDH3); G. King, R. Holmes. Alcohol Dehydrogenase. Alcohol Dehydrogenase Variability: Evolutionary and Functional Conclusions from Characterization of Further Variants; H. Jörnvall, et al. Three-Dimensional Structures of Human Alcohol Dehydrogenase Isoenzymes Reveal the Molecular basis for Their Functional Diversity; T.D. Hurley, et al. Mammalian Class II Alcohol Dehydrogenase: A Highly Variable Enzyme; J.-O. Höög, S. Svensson. Activity of Liver Alcohol Dehydrogenases on Steroids; D.K. Wilson, et al. Aldo/Keto Reductases. Structural Studies of Aldo-Keto Reductase Inhibition; D.K. Wilson, et al. Aldehyde Reductase: Catalytic Mechanism and Substrate Recognition; O.A. Barski, et al. Study of Non-Covalent Enzyme-Inhibitor Complexes of Aldose Reductase by Electrospray Mass Spectrometry; N. Potier, et al. 55 Additional Articles. Index.…

Buch. Zustand: Neu. Neuware - Reviews the state of research on the physiology of yeast stress responses and signal transduction pathways in yeast. Coverage includes adaptation to nutrient depletion in the yeast, stationary phase in the yeast saccharomyces cerevisiae, the yeast shock response, the response of yeast to osmotic stress, crucial factors in salt stress tolerance, ox.…