springer springer sep 1991 (288 risultati)

Taschenbuch. Condizione: Neu. Neuware - This book outlines a practice model which gives expression to the social work perspective on human problems. It shows what practical steps social workers can take to involve their clients in the struggle for social change. It is an approach which looks first to small, tangible gains that can lay the foundation for an expanded change agenda as clients gain in confidence and experience.

Buch. Condizione: Neu. Neuware - Relativistic Effects on Periodic Trends.- Atoms.- Relativistic Atomic Structure and Electron-Atom Collisions.- On the Accuracy of Oscillator Strengths.- Atomic Structure Calculations in Breit-Pauli Approximation.- Relativistic Calculations of Parity Non-Conserving Effects in Atoms.- High Precision Relativistic Atomic Structure Calculations Using the Finite Basis Set Approximation.- Relativistic Calculations of Electron Impact Ionisation Cross-Sections of Highly Charged Ions.- Molecules.- Nonsingular Relativistic Perturbation Theory and Relativistic Changes of Molecular Structure.- Basis Set Expansion Dirac-Fock SCF Calculations and MBPT Refinement.- Comments.- Polyatomic Molecular Dirac-Hartree-Fock Calculations with Gaussian Basis Sets.- Open Shell Relativistic Molecular Dirac-Hartree-Fock SCF-Program.- General Contraction in Four-Component Relativistic Hartree-Fock Calculations.- Accurate Relativistic Dirac-Fock and MBPT Calculations on Argon with Basis Sets of Contracted Gaussian Functions.- Comments.- Relativistic Many-Body Perturbation Theory of Atomic and Molecular Electronic Structure.- Solid State.- Relativistic Density-Functional Theory for Electrons in Solids.- Influence of Relativistic Effects on the Magnetic Moments and Hyperfine Fields of 5d-Impurity Atoms Dissolved in Ferromagnetic Fe.- Relativistic Spin-Polarized Density-Functional Theory: Simplified Method for Fully Relativistic Calculations.- Theory of Magnetocrystalline Anisotropy.- The Spin Polarized Photoemission from Non-Magnetic Metals.- Theory of Magnetic X-Ray Dichroism.- Participants.

Buch. Condizione: Neu. Neuware - Biota of the St. Marys River: habitat evaluation and environmental assessment.- Polycyclic aromatic hydrocarbons in surficial sediments and caged mussels of the St. Marys River, 1985.- Effects of pollution on benthic invertebrate communities of the St. Marys River, 1985.- Use of a geographic information system data base to measure and evaluate wetland changes in the St. Marys River, Michigan.- Limnological aspects of the St. Clair River.- Distribution and abundance of young fish in the St. Clair River and associated waters, Ontario.- Distribution and abundance of young fish in Chenal Ecarte and Chematogen Channel in the St. Clair River delta, Ontario.- Environmental quality assessment of the St. Clair River as reflected by the distribution of benthic macroinvertebrates in 1985.- Growth and overwinter survival of the Asiatic clam, Corbicula fluminea, in the St. Clair River, Michigan.- Deformities in larval Procladius spp. and dominant Chironomini from the St. Clair River.- Biota of Lake St. Clair: habitat evaluation and environmental assessment.- The plankton ecology of Lake St. Clair, 1984.- Plankton community structure in Lake St. Clair, 1984.- Phosphorus cycling by mussels (Unionidae: Bivalvia) in Lake St. Clair.- Biology of the exotic zebra mussel, Dreissena polymorpha, in relation to native bivalves and its potential impact in Lake St. Clair.- The Detroit River: effects of contaminants and human activities on aquatic plants and animals and their habitats.- Response of bacteria and phytoplankton to contaminated sediments from Trenton Channel, Detroit River.- Tumors in fish from the Detroit River.- Heavy metal contamination of sediments in the Upper Connecting Channels of the Great Lakes.- Application of a microcomputer-based algal fluorescence technique for assessing toxicity: Lake St. Clair and St. Clair River examples.- A method for evaluating the impact of navigationally induced suspended sediments from the Upper Great Lakes Connecting Channels on the primary productivity.- Heavy metals in aquatic macrophytes drifting in a large river.- Distribution of Hexagenia nymphs and visible oil in sediments of the Upper Great Lakes Connecting Channels.- Production of Hexagenia limbata nymphs in contaminated sediments in the Upper Great Lakes Connecting Channels.

Buch. Condizione: Neu. Neuware - The development of any Software (Industrial) Intensive System, e.g. critical embedded software, requires both different notations, and a strong devel- ment process. Different notations are mandatory because different aspects of the Software System have to be tackled. A strong development process is mandatory as well because without a strong organization we cannot warrantee the system will meet its requirements. Unfortunately, much more is needed! The different notations that can be used must all possess at least one property: formality. The development process must also have important properties: a exha- tive coverage of the development phases, and a set of well integrated support tools. In Computer Science it is now widely accepted that only formal notations can guarantee a perfect de ned meaning. This becomes a more and more important issue since software systems tend to be distributed in large systems (for instance in safe public transportation systems), and in small ones (for instance numerous processors in luxury cars). Distribution increases the complexity of embedded software while safety criteria get harder to be met. On the other hand, during the past decade Software Engineering techniques have been improved a lot, and are now currently used to conduct systematic and rigorous development of large software systems. UML has become the de facto standard notation for documenting Software Engineering projects. UML is supported by many CASE tools that offer graphical means for the UML notation.

Buch. Condizione: Neu. Neuware - arise automatically as a result of the recursive structure of the task and the continuous nature of the SRN's state space. Elman also introduces a new graphical technique for study ing network behavior based on principal components analysis. He shows that sentences with multiple levels of embedding produce state space trajectories with an intriguing self similar structure. The development and shape of a recurrent network's state space is the subject of Pollack's paper, the most provocative in this collection. Pollack looks more closely at a connectionist network as a continuous dynamical system. He describes a new type of machine learning phenomenon: induction by phase transition. He then shows that under certain conditions, the state space created by these machines can have a fractal or chaotic structure, with a potentially infinite number of states. This is graphically illustrated using a higher-order recurrent network trained to recognize various regular languages over binary strings. Finally, Pollack suggests that it might be possible to exploit the fractal dynamics of these systems to achieve a generative capacity beyond that of finite-state machines.

Buch. Condizione: Neu. Neuware - 'The professional schools will resume their professional responsibilities just to the degree that they can discover a science of design, a body of intellectually tough, partly formalizable, partly empirical teachable doctrine about the design process. ' [H.A. Simon, 1968} Design is aimed at the transformation or translation of a specification or high level description into a description in terms of some real-world primitives. As such it involves the removal of the uncertainty about the way in which a required system can be realized. To optimally support the design of systems, we must look at the design process as a whole and at the strong relationship that exists between a designer, the applied design method, the required design tools and the ways in which designs can be expressed. This book focuses on that relationship. The application field we are concerned with is the design of systems in which the communication between system elements is a major design feature. Examples of such communicating systems are: communication protocols, telephone exchange control systems, process control systems, highly modular systems, embedded software, interactive systems, and VLSI systems. In summary, we are concerned with systems in which concurrency plays a major role (concurrency defines the mutual relationship between the activities in the different parts of a system or within a collection of systems).

Buch. Condizione: Neu. Neuware - AMERICAN SIGN LANGUAGE American Sign Language (ASL) is the visual-gestural language used by most of the deaf community in the United States and parts of Canada. On the surface, this language (as all signed languages) seems radically different from the spoken languages which have been used to formulate theories of linguistic princi ples and parameters. However, the position taken in this book is that when the surface effects of modality are stripped away, ASL will be seen to follow many of the patterns proposed as universals for human language. If these theoretical constructs are meant to hold for language in general, then they should hold for natural human language in any modality; and ifASL is such a natural human language, then it too must be accounted for by any adequate theory of Universal Grammar. For this rea son, the study of ASL can be vital for proposed theories of Universal Grammar. Recent work in several theoretical frameworks of syntax as well as phonology have argued that indeed, ASL is such a lan guage. I will assume then, that principles of Universal Gram mar, and principles that derive from it, are applicable to ASL, and in fact that ASL can serve as one of the languages which test Universal Grammar. There is an important distinction to be drawn, however, be tween what is called here 'American Sign Language', and other forms of manual communication.

Buch. Condizione: Neu. Neuware - 1. Platelet activation and aggregation: rationale for combining antithrombotic drugs.- 2. Role of nitric oxide in endothelial cell - platelet interactions.- 3. Platelets and megakaryocytes in vascular disease.- 4. Thrombosis in relation to atherosclerosis.- 5. Pharmacological inhibition of the ADP-GP IIb/IIIa-fibrinogen pathway of platelet aggregation.- 6. Calcium fluxes in platelets and endothelial cells, mechanisms and functional significance.- 7. Inhibition of platelet function by cyclic nucleotides and cyclic nucleotide-dependent protein kinases.- 8. Pharmacological modification of platelet-derived cyclooxygenase product formation and its consequences for platelet-vessel wall interactions.- 9. Antithrombotics and the lipoxygenase pathway.- 10. Pathological expressions of platelet-vessel wall interactions: implications of serotonin.- 11. The involvement of PAF in thrombotic events.- 12. Prostaglandins and -analogs in the treatment of platelet-vessel wall interaction.- 13. Adjuvant agents to enhance and sustain reperfusion with t-PA: studies in experimental dog models.- 14. Effect of dietary marine lipids on (anti-)thrombotic mechanisms.

Buch. Condizione: Neu. Neuware - The second of the 1989 conferences in the Shell Conference Series, held from 10 to 12 December in the Netherlands and organized by Koninklijke/Shell-Laboratorium, Amsterdam, was on 'Computational Fluid Dynamics for Petrochemical Process Equip ment'. The objective was to generate a shared perspective on the subject with respect to its role in the design of equipment involving complex flows. The conference was attended by scientists from four Shell laboratories and experts from universities in the USA, France, Great Britain, Germany and The Netherlands. R. V. A. Oliemans, G. Ooms and T. M. M. Verheggen formed the organizing committee. Complexities in fluid flow may arise from equipment geometry and/or the fluids themselves, which can be mUlti-component, single-phase or multiphase. Pressure and temperature gradients and any reactivity of components in the flow stream can be additional factors. Four themes were addressed: turbulent reacting and non-reacting flow, dispersed multiphase flow, separated two-phase flow and fluid flow simulation tools. The capabilities and limitations of a sequence of turbulence flow models, from the relatively simple k- Pds. model to direct numerical simulation and large eddy turbulence flow models, were considered for a range of petrochemical process equipment. Flow stability aspects and the potential of cellular automata for the simulation of industrial flows also received attention. The papers published in this special issue of Applied Scientific Research provide a fair representation of the Computational Fluid Dynamics topics discussed in the context of their application to petrochemical process equipment.

Buch. Condizione: Neu. Neuware - Rudolf Carnap was born on May 18, 1891, and Hans Reichenbach on September 26 in the same year. They are two of the greatest philosophers of this century, and they are eminent representatives of what is perhaps the most powerful contemporary philosophical movement. Moreover, they founded the journal Erkenntnis. This is ample reason for presenting, on behalf of Erkenntnis, a collection of essays in honor of them and their philosophical work. I am less sure, however, whether it is a good time for resuming their philosophical impact; their work still is rather part than historical basis of the present philosophical melting-pot. Their basic philosophical theses have currently, it may seem, not so high a standing, but their impact can be seen in numerous detailed issues; they have opened or pushed forward lively fields of research which are still very actively pursued not only within philosophy, but also in many neighboring disciplines. Whatever the present balance of opinions about their philosophical ideas, there is something even more basic in their philosophy than their tenets which is as fresh, as stimulating, as exemplary as ever. I have in mind their way of philosophizing, their conception of how to do philosophy. It is always a good time for reinforcing that conception; and if this volume would manage to do so, it would fully serve its purpose.

Buch. Condizione: Neu. Neuware - The importance of drug resistance in cancer chemotherapy cannot be over stated. The 500,000 patients who die every year from cancer in the United States have, in most cases, been treated with chemotherapy. Many of these patients responded initially to chemotherapy, but death resulted from the development of drug-resistant tumors. In the first volume in the series. Drug Resistance in Chemotherapy the results of comprehensive laboratory studies aimed at understanding the mechanisms for resistance to individual agents and to the development of broad cross-resistance were described. In the past 2 years there has been substantial progress in understanding the molecular biology associated with these mechanisms of drug resistance. For the first time we are starting to understand which mechanisms are playing an im portant role in human tumors, and even more importantly, clinical trials have recently been initiated in an effort to reverse specific forms of drug resistance. The purpose of this volume is to describe the new advances, both at the molecular level and in the clinic regarding mechanisms of drug resistance and potential ways this resistance can be circumvented. This volume is focused upon mechanisms of resistance associated with two major classes of anticancer drugs: alkylating agents (including cisplatin) and the natural products (e. g. , adriamycin and vinblastine). The first section of the book describes new insights into the genetic mechanisms associated with drug resistance.

Buch. Condizione: Neu. Neuware - analyzing the experimental data and constructing math.ematical models of the processes under study, one has to rely rather on the physical intuition than on the strict calculations. Now let us go one step higher and explain the main title of the book. The concepts of 'laminary' and 'turbulent' motions were first introduced in hydrodynamics. Since the old days these concepts have considerably broadened; now the laminar and the turbulent motions have been discovered and investigated at all levels of description of nonequilibrium processes in the open systems, from kinetics to reaction diffusion. In any case, one of the principal characteristics of the turbulent motion is the existence of a large number of well-developed macroscopic degrees of freedom. For this reason the turbulent motion is extremely complicated and to a large extent unpredictable. As the laminar and the turbulent flows play an important role in the processes of evolution in the open systems, and in particular, in the processes of self-organization, the need arises for assessing the relative degree of order of laminar and turbulent motions, and also for comparing the degree of order of various turbulent motions. Without being able to make such estimates it will be impossible to determine whether the evolution is going towards higher or towards lower organization when one turbulent state is replaced by another.

Buch. Condizione: Neu. Neuware - Emile Meyerson's writings on the philosophy of science are a rich source of ideas and information concerning many philosophical and historical aspects of the development of modem science. Meyerson's works are not widely read or cited today by philosophers or even philosophers of science, in part because they have long been out of print and are often not available even in research libraries. There are additional chevaux de !rise for all but the hardiest scholars: Meyerson's books are written in French (and do not all exist in English versions) and deal with the subject matter of science - ideas or concepts, laws or principles, theories - and epis temological questions rather than today's more fashionable topics of the social matrix and external influences on science with the concomitant neglect of the intellectual content of science. Born in Lublin, Poland, in 1859, Meyerson received most of his education in Germany, where he studied from the age of 12 to 23, preparing himself for a career in chemistry. ! He moved to Paris in 1882, where he began a career as an industrial chemist. Changing his profession, he then worked for a time as the foreign news editor of the HAVAS News Agency in Paris. In 1898 he joined the agency established by Edmond Rothschild that had as its purpose the settling of Jews in Palestine and became the Director of the Jewish Colonization Association for Europe and Asia Minor. These activities represent Meyerson's formal career.

Taschenbuch. Condizione: Neu. Neuware - This volume is the 3rd in a series of comprehensive publications devoted to the molecular spectra and environmentally important properties of polycyclic aromatic compounds which constitute one of the most interesting classes of environmental carcinogens. Since the first identification of dibenz(a,h)anthracene and later benzo(a)pyrene as chemical carcinogens in the 1930's, the number of publications devoted to this ubiquitously occurring group of compounds has increased constantly. Therefore, this reference source for the spectral, physicochemical and en vironmentaJ properties of polycyclic aromatic compounds should be a welcome addition to the previous volumes for scientists engaged in the investigation, characterisation and control of this hazardous class of pollutants. As was the case with the preceding volume, this publication is the fruit of a close collaboration within the General Directorate for SCience, Research and Development of the Commission of the European Communities between the Environment Institute of the Joint Research Centre Ispra, the Community Bureau of Reference and expert laboratories in the member states. F. Geiss Director of the Environment Institute JRC Ispra 1. Introduction Polycyclic Aromatic Compounds (PAC) are an important class of carcinogenic environmental pollutants, which occur in air, water, soils, sediments, in food and in the work area. Because many hundreds of closely related isomers are being formed and released in the environment from combustion processes of fossil fuels and other organic materials, their environmental and health con trol presents a difficult task.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Limit cycles or, more general, periodic solutions of nonlinear dynamical systems occur in many different fields of application. Although, there is extensive literature on periodic solutions, in particular on existence theorems, the connection to physical and technical applications needs to be improved. The bifurcation behavior of periodic solutions by means of parameter variations plays an important role in transition to chaos, so numerical algorithms are necessary to compute periodic solutions and investigate their stability on a numerical basis. From the technical point of view, dynamical systems with discontinuities are of special interest. The discontinuities may occur with respect to the variables describing the configuration space manifold or/and with respect to the variables of the vector-field of the dynamical system. The multiple shooting method is employed in computing limit cycles numerically, and is modified for systems with discontinuities. The theory is supported by numerous examples, mainly from the field of nonlinear vibrations. The text addresses mathematicians interested in engineering problems as well as engineers working with nonlinear dynamics. 180 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Dirichlet problem has a very long history in mathematics and its importance in partial differential equations, harmonic analysis, potential theory and the applied sciences is well-known. In the last decade the Dirichlet problem with L2-boundary data has attracted the attention of several mathematicians. The significant features of this recent research are the use of weighted Sobolev spaces, existence results for elliptic equations under very weak regularity assumptions on coefficients, energy estimates involving L2-norm of a boundary data and the construction of a space larger than the usual Sobolev space W1,2 such that every L2-function on the boundary of a given set is the trace of a suitable element of this space. The book gives a concise account of main aspects of these recent developments and is intended for researchers and graduate students. Some basic knowledge of Sobolev spaces and measure theory is required. 180 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Contents: V.A. Alexeev: Theorems about good divisors on log Fano varieties (case of index r > n - 2).- D. Arapura: Fano maps and fundamental groups.- A. Bertram, L. Ein, R. Lazarsfeld: Surjectivity of Gaussian maps for line bundles of large degree on curves.- V.I. Danilov: De Rham complex on toroidal variety.- I. Dolgachev, I. Reider: On rank 2 vector bundles with c21 = 10 and c2 = 3 on Enriques surfaces.- V.A. Iskovskih: Towards the problem of rationality of conic bundles.- M.M. Kapranov: On DG-modules over the De Rham complex and the vanishing cycles functor.- G. Kempf: More on computing invariants.- G. Kempf: Effective methods in invariant theory.- V.A. Kolyvagin: On the structure of the Shafarevich-Tate groups.- Vic.S. Kulikov: On the fundamental group of the complement of a hypersurface in Cn.- B. Moishezon, M. Teicher: Braid group technique in complex geometry, II: from arrangements of lines and conics to cuspidal curves.- D.Yu. Nogin: Notes on exceptional vector bundles and helices.- M. Saito: Hodge conjecture and mixed motives II.- C. Seeley, S. Yau: Algebraic methods in the study of simple-elliptic singularities.- R. Smith, R. Varley: Singularity theory applied to \*\*\*- divisors.- A.N. Tyurin: A slight generalization of the theorem of Mehta- Ramanathan.- F.L. Zak: Some properties of dual varieties and their applications in projective geometry.- Yu.G. Zarhin: Linear irreducible Lie algebras and Hodge structures. 312 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume deals with tumours occurring in the following sites: Nasal cavity and paranasal sinuses Nasopharynx Larynx, hypopharynx and trachea External ear Middle and inner ear The classification of tumours arising from each of the anatomical sites listed above is given separately. However, since the same tu mour type may occur in more than one site, the definitions and il lustrations have been grouped together. The classification is based on the histological characteristics of the tumours and is therefore concerned with morphologically identifiable cell types and histo logical patterns as seen with conventional light microscopy. Al though many of the histological terms and definitions have histo genetic implications, this classification is not primarily based on histogenesis. The term 'tumour' is used synonymously with neoplasm. The term 'tumour-like' is applied to non-neoplastic lesions which clini cally or morphologically resemble neoplasms; they are included in this classification because of their importance in differential diag nosis. The terminology adopted for individual tumours is based on their general acceptance and world-wide usage. Synonyms are in cluded only if they have been widely used in the literature or if they are considered helpful in understanding the lesions. In such cases the preferred terms are given first followed by the synonyms within parentheses. 220 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume covers selected up-dated contributions from the Conference on Age-associated Neurological Diseases held in Vienna 1989. Fields covered include Age-associated Memory Impairment (AAMI) Alzheimer's and Parkinson's dieseases and dementias and movement disorders of other etiologies. Concerning dementia, some papers deal with diagnosis employing neuro-imaging methods - PET, SPECT, MRI and XCT, others by means of electro-physiological methods. An important aspect is the early preclinical diagnosis of dementia using neuro-psychological tests to enhance the chance of effective treatment. Finally, drugs now under clinical investigation are discussed and preliminary results for several compounds are presented. This volume with its up-to-date contributions will be of special interest to all physicians treating elderly persons with age-associated degenerative diseases. 180 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -An understanding of the ecology of a fish pond is essential for the achievement of steady and high fish production in ponds. For the ecologist, the fish pond is a small laboratory: easy to investigate and responding rapidly to manipulation. For the aquaculturist, the ecology shows the ways and means of interventions ensuring an increase of production. The book deals with the different aspects of natural production within a pond, referring it to African conditions: considering first the role of soil as source and sink of nutrients for the water, then nutrient cycling within water and the fate of fertilizers added to ponds, and finally the contribution of natural productivity to fish production. The important sum of information brought together in this volume is valuable for both aquaculturist and ecologist, who lack a handbook on the ecology of a fish pond. It will capture the interest of African aquaculturists and stimulate aquaculture research on natural production. 164 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 156 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Beside the computers itself, programming languages are the most important tools of a computer scientist, because they allow the formulation of algorithms in a way that a computer can perform the desired actions. Without the availability of (high level) languages it would simply be impossible to solve complex problems by using computers. Therefore, high level programming languages form a central topic in Computer Science. It should be a must for every student of Computer Science to take a course on the organization and structure of programming languages, since the knowledge about the design of the various programming languages as well as the understanding of certain compilation techniques can support the decision to choose the right language for a particular problem or application. This book is about high level programming languages. It deals with all the major aspects of programming languages (including a lot of examples and exercises). Therefore, the book does not give an detailed introduction to a certain program ming language (for this it is referred to the original language reports), but it explains the most important features of certain programming languages using those pro gramming languages to exemplify the problems. The book was outlined for a one session course on programming languages. It can be used both as a teacher's ref erence as well as a student text book. 224 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The past forty years have been the stage for the maturation of mathematical biolo~ as a scientific field. The foundations laid by the pioneers of the field during the first half of this century have been combined with advances in ap plied mathematics and the computational sciences to create a vibrant area of scientific research with established research journals, professional societies, deep subspecialty areas, and graduate education programs. Mathematical biology is by its very nature cross-disciplinary, and research papers appear in mathemat ics, biology and other scientific journals, as well as in the specialty journals devoted to mathematical and theoretical biology. Multiple author papers are common, and so are collaborations between individuals who have academic bases in different traditional departments. Those who seek to keep abreast of current trends and problems need to interact with research workers from a much broader spectrum of fields than is common in the traditional mono-culture disciplines. Consequently, it is beneficial to have occasions which bring together significant numbers of workers in this field in a forum that encourages the exchange of ideas and which leads to a timely publication of the work that is presented. Such an occasion occurred during January 13 to 16, 1990 when almost two hun dred research workers participated in an international conference on Differential Equations and Applications to Biology and Population Dynamics which was held in Claremont. 288 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Portuguese Association for Artificial Intelligence hasbeen organizing Portuguese Conferences on ArtificialIntelligence, now held every second year, since 1985.This volume contains selected papers from the FifthConference on Artificial Intelligence. The conference has aninternational status: 62 contributions from 13 countrieswere received, of which 26 were from Portugal. To guaranteea high scientific standard, all the contributions werereviewed by at least three researchers,and only 20 paperswere accepted and included in these proceedings. The papersare organized into sections on constraints, search,knowledge representation, temporal reasoning, planning,diagnosis and repair, and learning. 308 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Following Karmarkar's 1984 linear programming algorithm,numerous interior-point algorithms have been proposed forvarious mathematical programming problems such as linearprogramming, convex quadratic programming and convexprogramming in general. This monograph presents a study ofinterior-point algorithms for the linear complementarityproblem (LCP) which is known as a mathematical model forprimal-dual pairs of linear programs and convex quadraticprograms. A large family of potential reduction algorithmsis presented in a unified way for the class of LCPs wherethe underlying matrix has nonnegative principal minors(P0-matrix). This class includes various importantsubclasses such as positive semi-definite matrices,P-matrices, P\*-matrices introduced in this monograph, andcolumn sufficient matrices. The family contains not only theusual potential reduction algorithms but also path followingalgorithms and a damped Newton method for the LCP. The maintopics are global convergence, global linear convergence,and the polynomial-time convergence of potential reductionalgorithms included in the family. 120 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -References, to the reader, are like insulin to the diabetic: when needed they are indispensable, but in excess they induce coma. Moreover, when references are simply shovelled into a text in great gobbets, it is hard to resist the suspicion that the author has not read them all, but has copied some from a previous author's list. The story is told of one author who mischievously included in his list a bogus reference to an obscure foreign journal, and gleefully noted its frequent appearance in future articles. One of the joys of this present book is that the number of references to each topic is very small. But these few have been selected with dis cretion and studied with care. Each group of references is followed by a critical assessment, written with balanced judgment and commendable brevity, and how refreshing it is to find authors who read much but write little. In fact, these authors have followed the pattern of the sister work, Selected References in Orthopaedic Trauma, published in 1989. 224 pp. Englisch.

Buch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This volume contains the papers that will be presented at 'EMC '91 '-the European Metals Conference-to be held in Brussels, Belgium, from 15 to 20 September 1991, and organized by Benelux Metallurgie, GDMB (Gesellschaft Deutscher Metallhutten und Bergleute) and IMM (the Institution of Mining and Metallurgy). 'EMC '91' is the first of an intended major series organized at the European level with the aim of bringing together all those who are involved with the extraction and processing of non-ferrous metals-European metallurgists and their international colleagues-to provide them with the opportunity to exchange views on the state and evolution of their industry. The programme covers all the different aspects of the metallurgy of non-ferrous metals from mining to fabricated products. Particular attention is being paid to the European non -ferrous industry with respect to changes in demand, the technology used, pressures on the environment and the competitive position of manufacturers. The contributions of the plenary lecturers (copies of which will appear in the IMM journal Minerals Industry International in 1991-92) and the many authors are gratefully acknowledged. Thanks are also due to the referees of the papers, the sponsors, the companies that have allowed registrants to visit their operations, the chairmen of the technical sessions and the staffs of the organizing bodies for their efficient administrative work. Jean Vereecken Chairman, Organizing Committee July 1991 v Contents Foreword. . . . . . . . . . . . . . . . . . . . . . . v . 532 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The workshop Computer Science Logic '90 was held at theMax-Planck-Haus in Heidelberg, Germany, October 1-5, 1990.It was the fourth in a series of worskhops, following CSL'89 at the University of Kaiserslautern (see LNCS 440), CSL'88 at the University of Duisberg (see LNCS 385), and CSL'87 at the University of Karlsruhe (see LNCS 329). Thisvolume contains 24 papers, chosen by means of a reviewprocedure from the 35 papers presented at the workshop, someof which were invited and some selected from a total of 89submissions. The papers cover a wide range of topics arisingfrom the applications of logic to computer science. 412 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -After many years of teaching circuit theory and analogue electronic circuits the author believes that for most students the main path to obtaining a good understanding of the principles involved, as measured by their ability to apply them in a correct and intelligent manner, is through problem solving and design exercises. In an ideal world the student would be able to construct the circuit being analysed or designed, and so directly test the calculated or pre dicted results. Indeed, experience leads to the conclusion that typical students like to see their own circuits perform as intended, with a con sequent increase in motivation. At present, however, time and facility constraints mean that most of this work is of the pencil and paper variety, students having few opportunities to see the consequences of their efforts in a practical situation. At best they have to accept sample solutions or simply num erical answers. This path can seem tedious to all but the most motivated of students, so an alternative which can provide many of the benefits of direct circuit testing within the time and resources available is of im mediate interest. This is where the MINNIE and HSpice simulation package can assist the undergraduate teaching activity. 216 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The Fifth SEI Conference on Software Engineering was held inPittsburgh, Pennsylvania, October 7-8, 1991. This annualconference is a forum for discussion of software engineeringeducation and training among members of the academic,industry, and government communities. It is funded by theEducation Program of the Software Engineering Institute, afederallyfunded research and development center of the U.S.Department of Defense. For the first time in 1991 it washeld in conjunction with the Association for ComputingMachinery and the IEEE Computer Society. Seven sessionsaddressed: software project courses, software engineeringtraining in government and industry, curriculum issues,software engineering teaching styles, teaching design,topics inreal time and environments, and developingsoftware engineering expertise. 308 pp. Englisch.