This work is devoted to the motion of surfaces for which the normal velocity at every point is given by the mean curvature at that point; this geometric heat flow process is called mean curvature flow. Mean curvature flow and related geometric evolution equations are important tools in mathematics and mathematical physics. A major example is Hamilton's Ricci flow program, which has the aim of settling Thurston's geometrization conjecture, with recent major progress due to Perelman. Another important application of a curvature flow process is the resolution of the famous Penrose conjecture in general relativity by Huisken and Ilmanen. Under mean curvature flow, surfaces usually develop singularities in finite time. This work presents techniques for the study of singularities of mean curvature flow and is largely based on the work of K. Brakke, although more recent developments are incorporated.
This book is a continuation of Scheduling in Computer and Manufacturing Sys tems 1, two editions of which have received kind acceptance of a wide readership. As the previous position, it is the result of a collaborative German-Polish project which has been partially supported by Committee for Scientific Research 2 and DFG. We appreciate this help. We decided to treat this work as a new book rather than the third edition of the previous one due to two important reasons. First of all, the contents has been changed significantly. This concerns not only corrections we have introduced following the suggestions made by many readers (we are very grateful to all of them!) and taking into account our own experience, but first of all this means that important new material has been added. In particular, in the introductory part the ideas of new local search heuristics, i. e. generally applicable global optimization strategies with a simple capability of learning (ejection chains, genetic algo rithms) have been presented. In the framework of parallel processor scheduling, topics of imprecise computations and lot size scheduling have been studied. Further on flow shop and job shop scheduling problems have been studied much more extensively, both from the viewpoint of exact algorithms as well as heuris tics.
This book provides a theoretical and application-oriented analysis of deterministic scheduling problems in advanced planning and computer systems. The text examines scheduling problems across a range of parameters: job priority, release times, due dates, processing times, precedence constraints, resource usage and more, focusing on such topics as computer systems and supply chain management. Discussion includes single and parallel processors, flexible shops and manufacturing systems, and resource-constrained project scheduling. Many applications from industry and service operations management and case studies are described. The handbook will be useful to a broad audience, from researchers to practitioners, graduate and advanced undergraduate students.
This book provides a theoretical and application-oriented analysis of deterministic scheduling problems in advanced planning and computer systems. The text examines scheduling problems across a range of parameters: job priority, release times, due dates, processing times, precedence constraints, resource usage and more, focusing on such topics as computer systems and supply chain management. Discussion includes single and parallel processors, flexible shops and manufacturing systems, and resource-constrained project scheduling. Many applications from industry and service operations management and case studies are described. The handbook will be useful to a broad audience, from researchers to practitioners, graduate and advanced undergraduate students.
This book provides a theoretical and application-oriented analysis of deterministic scheduling problems in advanced planning and computer systems. The text examines scheduling problems across a range of parameters: job priority, release times, due dates, processing times, precedence constraints, resource usage and more, focusing on such topics as computer systems and supply chain management. Discussion includes single and parallel processors, flexible shops and manufacturing systems, and resource-constrained project scheduling. Many applications from industry and service operations management and case studies are described. The handbook will be useful to a broad audience, from researchers to practitioners, graduate and advanced undergraduate students.
A theoretical and application-oriented analysis of deterministic scheduling problems arising in computer and manufacturing environments. The important classical results are surveyed with particular attention paid to single-processor scheduling, along with general models such as resource-constrained scheduling, flexible flow shops, dynamic job shops, and special flexible manufacturing systems. Polynomial and exponential-time optimization algorithms as well as approximation and heuristic ones are presented using a Pascal-like notation, before being discussed in the light of particular problems. Basic concepts from scheduling theory and related fields are described to assist less advanced readers.
This book is a continuation of Scheduling in Computer and Manufacturing Sys tems 1, two editions of which have received kind acceptance of a wide readership. As the previous position, it is the result of a collaborative German-Polish project which has been partially supported by Committee for Scientific Research 2 and DFG. We appreciate this help. We decided to treat this work as a new book rather than the third edition of the previous one due to two important reasons. First of all, the contents has been changed significantly. This concerns not only corrections we have introduced following the suggestions made by many readers (we are very grateful to all of them!) and taking into account our own experience, but first of all this means that important new material has been added. In particular, in the introductory part the ideas of new local search heuristics, i. e. generally applicable global optimization strategies with a simple capability of learning (ejection chains, genetic algo rithms) have been presented. In the framework of parallel processor scheduling, topics of imprecise computations and lot size scheduling have been studied. Further on flow shop and job shop scheduling problems have been studied much more extensively, both from the viewpoint of exact algorithms as well as heuris tics.
International organizations like the United Nations, the International Monetary Fund, or the European Union are a defining feature of contemporary world politics. In recent years, many of them have also become heavily politicized. In this book, we examine how the norms and values that underpin the evaluations of international organizations have changed over the past 50 years. Looking at five organizations in depth, we observe two major trends. Taken together, both trends make the legitimation of international organizations more challenging today. First, people-based legitimacy standards are on the rise: international organizations are increasingly asked to demonstrate not only what they do for their member states, but also for the people living in these states. Second, procedural legitimacy standards gain ground: international organizations are increasingly evaluated not only based on what they accomplish, but also based on how they arrive at decisions, manage themselves, or coordinate with other organizations in the field. In sum, the study thus documents how the list of expectations international organizations need to fulfil to count as 'legitimate' has expanded over time. The sources of this expansion are manifold. Among others, they include the politicization of expanded international authority and the rise of non-state actors as new audiences from which international organizations seek legitimacy.
The 50th volume of Progress in Botany appears in new guise. In cooperation with Springer-Verlag we have changed from the less attractive typewriter composition to the direct reproduction of a manuscript which was writ ten by means of a text editing system and produced by a laser printer. We, the editors, should like to take the appearance of Volume 50 as the occasion for a few short remarks. Our younger readers are perhaps not aware that our Book Series was founded in 1931 by Fritz von Wettstein, based on the following thoughts and considerations, aptly formulated by him in the Preface to the first volume. "One of the greatest dangers threatening progress in the science of botany is the absolutely unbelievable growth in volume of the literature. The quality of journals, books and individual works that are daily sent to us makes it impossible for anyone person to maintain a general view of the progress made in botany in all the specialized fields, let alone to find time for results from associated su bjects. For varying reasons, every botanist must find this state of matters insupportable. Let us endeavor, in the general interest, to retain a wide background of knowledge, and not become limited specialists. The vitally necessary connections between the specialized fields can only flourish, or even exist, if the general view of botany as a whole can be maintained.
The original edition of Klaus Grawe's book exploring the basis and need for a more generally valid concept of psychotherapy fueled a lively debate among psychotherapists and psychologists in German-speaking areas. Now available in English, this book will help spread the concepts and the debate among a wider audience. The book is written in dialog form. A practicing therapist, a research psychologist, and a therapy researcher take part in three dialogs, each of which builds on the results of the previous dialog. The first dialog explores how therapeutic change takes place, while the second looks at how the mechanisms of action of psychotherapy can be understood in terms of basic psychological concepts. Finally, in the third dialog, a psychological theory of psychotherapy is developed. The practical implications of this are clearly shown in the form of case examples, as well as guidance on indications and treatment planning. The dialog ends with suggestions as to how therapy training and provision of psychotherapy could be improved on the basis of the model of psychotherapy that has been developed.
The original edition of this ambitious reference was published in hardcover in 1998, in two oversize volumes (10x13"). This edition combines the two volumes into one; it's paperbound ("flexi-cover"--the paper has a plastic coating), smaller (8x10", and affordable for art book buyers with shallower pockets--none of whom should pass it by. The scope is encyclopedic: half the work (originally the first volume) is devoted to painting; the other half to sculpture, new media, and photography. Chapters are arranged thematically, and each page displays several examples (in color) of work under discussion. The final section, a lexicon of artists, includes a small bandw photo of each artist, as well as biographical information and details of work, writings, and exhibitions. Ruhrberg and the three other authors are veteran art historians, curators, and writers, as is editor Walther. c. Book News Inc.
................................................................. The performance of a nonlinear programming algorithm can only be ascertained by numerical experiments requiring the collection and implementation of test examples in dependence upon the desired performance criterium. This book should be considered as an assis tance for a test designer since it presents an extensive collec tion of nonlinear programming problems which have been used in the past to test or compare optimization programs. He will be in formed about the optimal solution, about the structure of the problem in the neighbourhood of the solution, and, in addition, about the usage of the corresp,onding FORTRAN subroutines if he is interested in obtaining them -ofi a magnetic tape. Chapter I shows how the test examples are documented. In par ticular, the evaluation of computable information about the solu tion of a problem is outlined. It is explained how the optimal solution, the optimal Lagrange-multipliers, and the condition number of the projected Hessian of the Lagrangian are obtained. Furthermore, a classification number is defined allowing a formal description of a test problem, and the documentation scheme is described which is used in Chapter IV to present the problems.
A monumental new biography of a pivotal yet poorly understood pioneer in modern philosophy. When a painter once told Goethe that he wanted to paint the most celebrated man of the age, Goethe directed him to Georg Wilhelm Friedrich Hegel. Hegel worked from the credo: To philosophize is to learn to live freely. While he was slow and cautious in the development of his philosophy, his intellectual growth was like an odyssey of the mind, and, contrary to popular belief, his life was full of twists and turns, suspense and even danger. In this landmark biography, the philosopher Klaus Vieweg paints a new picture of the life and work of the most important representative of German idealism. His vivid portrait provides readers an intimate account of Hegel's times and the milieu in which he developed his thought, along with detailed, clear-sighted analyses of Hegel's four major works. What results is a new interpretation of Hegel through the lens of reason and freedom. Vieweg draws on extensive archival research that has brought to light a wealth of hitherto undiscovered documents and handwritten notes relating to Hegel's work, touching on Hegel's engagement with the leading thinkers and writers of his age: Kant, Fichte, Schelling, Hölderlin, and others. Combatting clichés and misunderstandings about Hegel, Vieweg also offers a sustained defense of the philosopher's more progressive impulses. Highly praised upon its release in Germany as having set the new biographical standard, this monumental work emphasizes Hegel's relevance for today, depicting him as a vital figure in the history of philosophy.
These lecture notes are dedicated to the mathematical modelling, analysis and computation of interfaces and free boundary problems appearing in geometry and in various applications, ranging from crystal growth, tumour growth, biological membranes to porous media, two-phase flows, fluid-structure interactions, and shape optimization. We first give an introduction to classical methods from differential geometry and systematically derive the governing equations from physical principles. Then we will analyse parametric approaches to interface evolution problems and derive numerical methods which will be thoroughly analysed. In addition, implicit descriptions of interfaces such as phase field and level set methods will be analysed. Finally, we will discuss numerical methods for complex interface evolutions and will focus on two phase flow problems as an important example of such evolutions.
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