Visar resultat för..."Friedrich Vieweg Sohn Verlagsgesellschaft mbH"
105 produkter
105 produkter
Häftad, Engelska, 1984
539 kr
Skickas inom 10-15 vardagar
This monograph was prepared for the Agency for International Development, Washington D. C. 20523. The authors gratefully acknowledge the assistance ofthe following Research Assistants in the Department of Agricultural Engineering: G. Lamorey, E. A. Osman and K. Sachs. J. L. Bumgarner, Draftsman for the Department, did most ofthe ink drawings. The writing of the monograph provided an unique opportunity to collect and study a significant part of the English and some German literature on the subject starting about the year 1900. It may be concluded that, despite renewed worldwide efforts in this field, only in significant advances have been made in the design of gas producer-engine systems. Eschborn, February l3, 1984 Albrecht Kaupp Contents Chapter I: Introduction and Summary 1 Chapter II: History of Small Gas Producer Engine Systems 8 Chemistry of Gasification 25 Chapter III: Gas Producers 46 Chapter IV: Chapter V: Fuel 100 Chapter VI: Conditioning of Producer Gas 142 Chapter VII: Internal Combustion Engines 226 Chapter VIII: Economics 268 Legend 277 CHAPTER I: INTRODUCTION Gasification of coal and biomass can be considered to be a century old technology.
803 kr
Skickas inom 10-15 vardagar
Manual on Induction Motors used as Generators
Häftad, Engelska, 2000
907 kr
Skickas inom 5-8 vardagar
Algebraic geometry is, loosely speaking, concerned with the study of zero sets of polynomials (over an algebraically closed field). As one often reads in prefaces of int- ductory books on algebraic geometry, it is not so easy to develop the basics of algebraic geometry without a proper knowledge of commutative algebra. On the other hand, the commutative algebra one needs is quite difficult to understand without the geometric motivation from which it has often developed. Local analytic geometry is concerned with germs of zero sets of analytic functions, that is, the study of such sets in the neighborhood of a point. It is not too big a surprise that the basic theory of local analytic geometry is, in many respects, similar to the basic theory of algebraic geometry. It would, therefore, appear to be a sensible idea to develop the two theories simultaneously. This, in fact, is not what we will do in this book, as the "commutative algebra" one needs in local analytic geometry is somewhat more difficult: one has to cope with convergence questions. The most prominent and important example is the substitution of division with remainder. Its substitution in local analytic geometry is called the Weierstraft Division Theorem. The above remarks motivated us to organize the first four chapters of this book as follows. In Chapter 1 we discuss the algebra we need. Here, we assume the reader attended courses on linear algebra and abstract algebra, including some Galois theory.
Häftad, Engelska, 2009
431 kr
Skickas inom 5-8 vardagar
The book first describes connections between some basic problems and technics of combinatorics and statistical physics. The discrete mathematics and physics terminology are related to each other. Using the established connections, some exciting activities in one field are shown from a perspective of the other field. The purpose of the book is to emphasize these interactions as a strong and successful tool. In fact, this attitude has been a strong trend in both research communities recently. It also naturally leads to many open problems, some of which seem to be basic. Hopefully, this book will help making these exciting problems attractive to advanced students and researchers.
Häftad, Tyska, 1986
571 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1994
799 kr
Skickas inom 5-8 vardagar
Häftad, Tyska, 1992
554 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1991
571 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1992
571 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1993
571 kr
Skickas inom 10-15 vardagar
This work presents a new, abstract and comprehensive view of open distributed systems. The starting point is a small number of core concepts and basic principles, which are informally introduced and precisely defined using mathematical logic. It is shown how the basic concepts of open systems interconnection (OSI), which are currently the most important standardization activities in the context of open distributed systems, can be obtained by specialization and extension of these basic concepts. Application examples include the formal treatment of the interaction point concept and the hierarchical development of communication systems. This book is a contribution to the field of software engineering in general and to the design of open distributed systems in particular. It is oriented towards the design and implementation of real systems, and brings together both formal logical reasoning and current software engineering practice.
Häftad, Tyska, 1993
571 kr
Skickas inom 10-15 vardagar
This volume presents an approach to the formal object-oriented specification of information systems. The approach focuses on the early phases of system development where existing systems have to be described or systems to be developed have to be prescribed (requirements specification or conceptional modeling). Systems are considered to be reactive systems composed from objects that evolve concurrently in a discrete, event-driven way. Based on a temporal logic framework, the language TROLL is defined. TROLL supports the integrated specification of structural and behavioural properties of objects, as well as abstractions like roles, specifications and composite objects. Furthermore, concepts for constructing systems specifications from parts are introduced. Finally, the approach is related to similar ones and discussed.
Häftad, Engelska, 1994
1 103 kr
Skickas inom 10-15 vardagar
This work contains 11 contributions which deal with true automatic parallelization, and the focus is on automatic methods. Some of the questions under discussion are: up to which degree is automatic parallelization for DMS possible today? What are currently the most important problems for automatic parallelization and which new ideas are there? In which cases can knowledge-based methods help? Are there promising methods for automatic data distribution and redistribution? Why is performance prediction problematic?
Häftad, Tyska, 1994
571 kr
Skickas inom 10-15 vardagar
Load distribution has always raised the interest of the research community and industry, however, it has never resulted in wide use. One of the main reasons is the lack of widespread distributed operating systems. This book describes yet another attempt to receive load distribution, this time in the context of the Mach-mikrokernel. A new level, on the top of the mikrokernal, is suggested and described through detailed design and through performance measurements. Advantages and drawbacks are discussed.
Häftad, Engelska, 1995
1 316 kr
Skickas inom 5-8 vardagar
This work provides an instructive into applications and problems from the broad field of pattern recognition. It describes basic topics and the required mathematical background of image and speech processing. Algorithms and data structures for filtering, feature extraction, segmentation and classification are discussed, introducing and demonstrating different C++ concepts. The practice of object-oriented programming is illustrated by a step-wise development of a complete class library for image processing.
Häftad, Tyska, 1996
571 kr
Skickas inom 10-15 vardagar
This title provides help in selecting methods and software tools. Particular emphasis is placed on the link between methods and software tools. This is significant not only for users, but should become a critical success factor for method and tool developers in theory and practice. Numerous tables and figures augment the presentation and provide additional information. Each method and tool description contains a summary table of the most important features and evaluation results. Examples of documents and graphic presentation of the procedural model illustrate the method description. For each of the software tools evaluated, one or two screen shots provide an impression of the graphic model representation and the user interface.
Häftad, Engelska, 2004
556 kr
Skickas inom 10-15 vardagar
The very powerful and versatile ARIS Toolset of IDS Scheer AG is the leading modeling tool worldwide for business process management. This textbook helps beginners learn ARIS and advanced users will find useful and valuable hints. It complements existing training as well as private studies.The reader learns the basics of ARIS management and can start simple projects that include basic process knowledge, ARIS operation and system administration, and models and modeling as well as model evaluations. Exercises with solutions and an extensive case study offer plenty of practice possibilities. The author shows how process models are realized using document and workflow management systems.
Häftad, Engelska, 2004
556 kr
Skickas inom 10-15 vardagar
The Information Security Solutions Europe Conference (ISSE) was started in 1999 by EEMA and TeleTrusT with the support of the European COlnmission and the German Federal Minis try of Technology and Economics. Today the annual conference is a fixed event in every IT security professional's calendar. The aim of ISSE is to support the development of a European information security culture and especially a cross-border framework for trustworthy IT ap plications for citizens, industry and administration. Therefore, it is important to take into con sideration both international developments and European regulations and to allow for the in terdisciplinary character of the information security field. In the five years of its existence ISSE has thus helped shape the profile of this specialist area. The integration of security in IT applications was initially driven only by the actual security issues considered important by experts in the field; currently, however, the economic aspects of the corresponding solutions are the most important factor in deciding their success. ISSE offers a suitable podium for the discussion of the relationship between these considerations and for the presentation of the practical implementation of concepts with their technical, or ganisational and economic parameters.
Häftad, Engelska, 2004
556 kr
Skickas inom 10-15 vardagar
The Information Security Solutions Europe Conference (ISSE) was started in 1999 by EEMA and TeleTrusT with the support of the European Commission and the German Federal Minis try of Technology and Economics. Today the annual conference is a fixed event in every IT security professional's calendar. The aim of ISSE is to support the development of a Euro pean information security culture and especially a cross-border framework for trustworthy IT applications for citizens, industry and administration. Therefore, it is important to take into consideration both international developments and European regulations and to allow for the interdisciplinary character of the information security field. In the five years of its existence ISSE has thus helped shape the profile of this specialist area. The integration of security in IT applications was initially driven only by the actual security issues considered important by experts in the field; currently, however, the economic aspects of the corresponding solutions are the most important factor in deciding their success. ISSE offers a suitable podium for the discussion of the relationship between these considerations and for the presentation of the practical implementation of concepts with their technical, or ganisational and economic parameters.
Häftad, Tyska, 1990
654 kr
Skickas inom 10-15 vardagar
Häftad, Engelska, 1988
539 kr
Skickas inom 10-15 vardagar
The advent of the high-speed computer with its enormous storage capabilities enabled statisticians as well as researchers from the different topics of life sciences to apply mul tivariate statistical procedures to large data sets to explore their structures. More and more, methods of graphical representation and data analysis are used for investigations. These methods belong to a topic of growing popUlarity, known as "exploratory data analysis" or EDA. In many applications, there is reason to believe that a set of objects can be clus tered into subgroups that differ in meaningful ways. Extensive data sets, for example, are stored in clinical cancer registers. In large data sets like these, nobody would ex pect the objects to be homogeneous. The most commonly used terms for the class of procedures that seek to separate the component data into groups are "cluster analysis" or "numerical taxonomy". The origins of cluster analysis can be found in biology and anthropology at the beginning of the century. The first systematic investigations in cluster analysis are those of K. Pearson in 1894. The search for classifications or ty pologies of objects or persons, however, is indigenous not only to biology but to a wide variety of disciplines. Thus, in recent years, a growing interest in classification and related areas has taken place. Today, we see applications of cluster analysis not only to. biology but also to such diverse areas as psychology, regional analysis, marketing research, chemistry, archaeology and medicine.
Häftad, Tyska, 1989
654 kr
Skickas inom 10-15 vardagar
Häftad, Engelska, 1988
1 071 kr
Skickas inom 10-15 vardagar
Within the last decade or so, the accelerated growth of Nigeria in the fields of urbanisation, population, business as well as industry has led to some attention in assessment of available water resources in various parts of the country. Many workers (du Preez and Barber, 1965; Jackson, 1978; Faniran and Omorinbola, 1980; Ofodile, 1983; Egboka, 1983; Akujieze, 1984; Ogbukagu, 1984; Uma, 1984) have made significant contributions in this area. Water is important because the attainment of the goals of any society as well as the health and well-being of the population depends on a plentiful and reliable supply of this natural resource. Water forms an indispensable input into economic activities such as commerce, tourism and industry. The results of the various researches have revealed that water resources (surface and groundwater) in many parts of the country, especially the southern part, are more than adequate to meet any demand and only need development. A complete appraisal of available water resources is often best accomplished when aspects of water quality are included. This is because in a planned water supply system, quality constraints and requirements dictate the sources of water allocated to various stages. A public water supply, though contributing greatly to the human health and well-being, can also be a vehicle for spreading disease if not properly handled. In this paper, water quality of selected water resources (surface and groundwater) in some parts of Imo State, Nigeria are reported and suggestions advanced for their healthy untilization.
Häftad, Tyska, 1988
554 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1988
554 kr
Skickas inom 10-15 vardagar
Häftad, Engelska, 1991
1 071 kr
Skickas inom 10-15 vardagar
This book is an outcome of a 2-days Workshop on Automation Engineering held in Salzhausen (near Hamburg), F.R. Germany. The Workshop is annually organ ized by the Institute of Automation Technology and the Institute of Applied and Physical Chemistry of the University of Bremen. It is regularly joined by 30 to 40 participants representing the teaching and reserarch staff of both Institutes, as weIl as some invited colleagues from other universities and the regional industry. Usually 15/20 selected contributions, grouped in technical sessions (system modelling and identification, control systems design, computer hardware and soft ware, knowledge-based systems, robotics etc.), are presented at the Workshop, whereby the invited guests preferably present survey papers on current problems of modern systems engineering. For this book, 22 papers, contributed to the last two Workshops, are selected and grouped into 6 Chapters. The Chapters reflect the technical sessions listed above and give an average view on current research activities at both Institutes of the University. It is expected that the book will prove as a useful reference to the scientists and practicing engineers in the area of devel opment and application of methods of modern systems engineering in processing industry and the robotics.
Häftad, Tyska, 1989
554 kr
Skickas inom 10-15 vardagar
Del 7 - Advances in Control Systems and Signal Processing
Contributions to Autonomous Mobile Systems
Häftad, Engelska, 1992
539 kr
Skickas inom 10-15 vardagar
Autonomous mobile systems (AMS) are systems capable of some mobility and equipped with advanced sensor devices in order to flexibly respond to changing environmental situations, thus achieving some degree of autonomy.
803 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1992
753 kr
Skickas inom 10-15 vardagar
Häftad, Tyska, 1991
468 kr
Skickas inom 10-15 vardagar
Dieses Buch versteht sich als Einfuhrung in die Theorie der Lie-Gruppen. Der Begriff der Lie-Gruppen wird ausgehend von den einfachsten Beispielen, den Matrizengruppen, entwickelt. Eine grosse Anzahl von Problemen fur Lie-Gruppen kann man durch Ubertragung auf die zugehorigen Lie-Algebren losen. Dies ist der Leitgedanke des Buches. Vorausgesetzt werden Kenntnisse in der Linearen Algebra, der Differentialrechnung mehrerer Variablen und der elementaren Gruppentheorie.
Letar du efter digitala böcker?
E-böcker och ljudböcker handlar du än så länge på vår tidigare sajt.