Uniform Random Numbers

Theory and Practice
Author: Shu Tezuka
Publisher: Springer Science & Business Media
ISBN: 1461523176
Category: Mathematics
Page: 209
View: 7801
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In earlier forewords to the books in this series on Discrete Event Dynamic Systems (DEDS), we have dwelt on the pervasive nature of DEDS in our human-made world. From manufacturing plants to computer/communication networks, from traffic systems to command-and-control, modern civilization cannot function without the smooth operation of such systems. Yet mathemat ical tools for the analysis and synthesis of DEDS are nascent when compared to the well developed machinery of the continuous variable dynamic systems char acterized by differential equations. The performance evaluation tool of choice for DEDS is discrete event simulation both on account of its generality and its explicit incorporation of randomness. As it is well known to students of simulation, the heart of the random event simulation is the uniform random number generator. Not so well known to the practitioners are the philosophical and mathematical bases of generating "random" number sequence from deterministic algorithms. This editor can still recall his own painful introduction to the issues during the early 80's when he attempted to do the first perturbation analysis (PA) experiments on a per sonal computer which, unbeknownst to him, had a random number generator with a period of only 32,768 numbers. It is no exaggeration to say that the development of PA was derailed for some time due to this ignorance of the fundamentals of random number generation.

Introduction to Quasi-Monte Carlo Integration and Applications


Author: Gunther Leobacher,Friedrich Pillichshammer
Publisher: Springer
ISBN: 3319034251
Category: Mathematics
Page: 195
View: 2742
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This textbook introduces readers to the basic concepts of quasi-Monte Carlo methods for numerical integration and to the theory behind them. The comprehensive treatment of the subject with detailed explanations comprises, for example, lattice rules, digital nets and sequences and discrepancy theory. It also presents methods currently used in research and discusses practical applications with an emphasis on finance-related problems. Each chapter closes with suggestions for further reading and with exercises which help students to arrive at a deeper understanding of the material presented. The book is based on a one-semester, two-hour undergraduate course and is well-suited for readers with a basic grasp of algebra, calculus, linear algebra and basic probability theory. It provides an accessible introduction for undergraduate students in mathematics or computer science.

Scientific and Engineering Computations for the 21st Century

Methodologies and Applications : Proceedings of the 15th Toyota Conference
Author: Masatake Mori,T. Mitsui
Publisher: Elsevier
ISBN: 9780444509949
Category: Computers
Page: 371
View: 2221
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The 20th century saw tremendous achievements and progress in science and technology. Undoubtedly, computers and computer-related technologies acted as one of vital catalysts for accelerating this progress in the latter half of the century. The contributions of mathematical sciences have been equally profound, and the synergy between mathematics and computer science has played a key role in accelerating the progress of both fields as well as science and engineering. Mathematical sciences will undoubtedly continue to play this vital role in this new century. In particular, mathematical modeling and numerical simulation will continue to be among the essential methodologies for solving massive and complex problems that arise in science, engineering and manufacturing. Underpinning this all from a sound, theoretical perspective will be numerical algorithms. In recognition of this observation, this volume focuses on the following specific topics. (1) Fundamental numerical algorithms (2) Applications of numerical algorithms (3) Emerging technologies. The articles included in this issue by experts on advanced scientific and engineering computations from numerous countries elucidate state-of-the-art achievements in these three topics from various angles and suggest the future directions. Although we cannot hope to cover all the aspects in scientific and engineering computations, we hope that the articles will interest, inform and inspire members of the science and engineering community.

Digital Nets and Sequences

Discrepancy Theory and Quasi–Monte Carlo Integration
Author: Josef Dick,Friedrich Pillichshammer
Publisher: Cambridge University Press
ISBN: 1139490052
Category: Computers
Page: N.A
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Indispensable for students, invaluable for researchers, this comprehensive treatment of contemporary quasi–Monte Carlo methods, digital nets and sequences, and discrepancy theory starts from scratch with detailed explanations of the basic concepts and then advances to current methods used in research. As deterministic versions of the Monte Carlo method, quasi–Monte Carlo rules have increased in popularity, with many fruitful applications in mathematical practice. These rules require nodes with good uniform distribution properties, and digital nets and sequences in the sense of Niederreiter are known to be excellent candidates. Besides the classical theory, the book contains chapters on reproducing kernel Hilbert spaces and weighted integration, duality theory for digital nets, polynomial lattice rules, the newest constructions by Niederreiter and Xing and many more. The authors present an accessible introduction to the subject based mainly on material taught in undergraduate courses with numerous examples, exercises and illustrations.

Optimization of Stochastic Models

The Interface Between Simulation and Optimization
Author: Georg Ch. Pflug
Publisher: Springer Science & Business Media
ISBN: 1461314496
Category: Business & Economics
Page: 382
View: 1027
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Stochastic models are everywhere. In manufacturing, queuing models are used for modeling production processes, realistic inventory models are stochastic in nature. Stochastic models are considered in transportation and communication. Marketing models use stochastic descriptions of the demands and buyer's behaviors. In finance, market prices and exchange rates are assumed to be certain stochastic processes, and insurance claims appear at random times with random amounts. To each decision problem, a cost function is associated. Costs may be direct or indirect, like loss of time, quality deterioration, loss in production or dissatisfaction of customers. In decision making under uncertainty, the goal is to minimize the expected costs. However, in practically all realistic models, the calculation of the expected costs is impossible due to the model complexity. Simulation is the only practicable way of getting insight into such models. Thus, the problem of optimal decisions can be seen as getting simulation and optimization effectively combined. The field is quite new and yet the number of publications is enormous. This book does not even try to touch all work done in this area. Instead, many concepts are presented and treated with mathematical rigor and necessary conditions for the correctness of various approaches are stated. Optimization of Stochastic Models: The Interface Between Simulation and Optimization is suitable as a text for a graduate level course on Stochastic Models or as a secondary text for a graduate level course in Operations Research.

Sūgaku Expositions

A Translation of Sūgaku
Author: N.A
Publisher: N.A
ISBN: N.A
Category: Mathematics
Page: N.A
View: 2673
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Distribution of sequences

a sampler
Author: Oto Strauch,Štefan Porubský
Publisher: Peter Lang Publishing
ISBN: N.A
Category: Mathematics
Page: 570
View: 4447
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The monograph covers material scattered throughout books and journals and focuses on the distribution properties of sequences which may be expressed in terms of distribution function, upper and lower distribution function, the discrepancy, diaphony, dispersion etc. The individual character of sequences reflected in their distribution properties may be an object of study from various points of view, and as such they are often the primary goal of investigation. In that case the studied properties are caught in separate results and are consequently accessible in a displayed form. On the other hand, the various distribution properties of sequences play only a subsidiary role in proofs and thus remain often hidden and are not manifested in a visible form. The enormous wealth of information contained in both cases may be of value not only to those working directly in the field, but also to those working in related branches of number theory, combinatorics, real or numerical analysis in the process of finding sequence possessing the required properties. Last, but not least browsing throughout the book may provide the impetus for prospective further research. This is what we hope may address a wide class of working mathematicians.

American Book Publishing Record


Author: N.A
Publisher: N.A
ISBN: N.A
Category: American literature
Page: N.A
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Choice


Author: N.A
Publisher: N.A
ISBN: N.A
Category: Academic libraries
Page: N.A
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Computers and education

an international bibliography on computer education: education about computers as well as the use of computers in education
Author: Studiecentrum NOVI (Netherlands)
Publisher: N.A
ISBN: N.A
Category: Computer-assisted instruction
Page: 115
View: 4223
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Vector Quantization and Signal Compression


Author: Allen Gersho,Robert M. Gray
Publisher: Springer Science & Business Media
ISBN: 146153626X
Category: Technology & Engineering
Page: 732
View: 4644
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Herb Caen, a popular columnist for the San Francisco Chronicle, recently quoted a Voice of America press release as saying that it was reorganizing in order to "eliminate duplication and redundancy. " This quote both states a goal of data compression and illustrates its common need: the removal of duplication (or redundancy) can provide a more efficient representation of data and the quoted phrase is itself a candidate for such surgery. Not only can the number of words in the quote be reduced without losing informa tion, but the statement would actually be enhanced by such compression since it will no longer exemplify the wrong that the policy is supposed to correct. Here compression can streamline the phrase and minimize the em barassment while improving the English style. Compression in general is intended to provide efficient representations of data while preserving the essential information contained in the data. This book is devoted to the theory and practice of signal compression, i. e. , data compression applied to signals such as speech, audio, images, and video signals (excluding other data types such as financial data or general purpose computer data). The emphasis is on the conversion of analog waveforms into efficient digital representations and on the compression of digital information into the fewest possible bits. Both operations should yield the highest possible reconstruction fidelity subject to constraints on the bit rate and implementation complexity.

International Books in Print


Author: N.A
Publisher: N.A
ISBN: N.A
Category: English imprints
Page: N.A
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Numerical Techniques for Engineering Analysis and Design

Proceedings of the International Conference on Numerical Methods in Engineering: Theory and Applications, NUMETA ’87, Swansea, 6–10 July 1987
Author: G.N. Pande,J. Middleton
Publisher: Springer Science & Business Media
ISBN: 9400936532
Category: Mathematics
Page: 746
View: 7555
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Numerical methods and related computer based algorithms form the logical solution for. many complex problems encountered in science and engineering. Although numerical techniques are now well established, they have continued to expand and diversify, particularly in the fields of engineering analysis and design. Various engineering departments in the University College of Swansea, in particular, Civil, Chemical, Electrical and Computer Science, have groups working in these areas. It is from this mutual interest that the NUMETA conference series was conceived with the main objective of providing a link between engineers developing new numerical techniques and those applying them in practice. Encouraged by the success of NUMETA '85, the second conference, NUMETA '87, was held at Swansea, 6-10 July 1987. Over two hundred and twenty abstracts were submitted for consideration together with a number of invited papers from experts in the field of numerical methods. The final selection of contributed and invited papers were of a high quality and have culminated in the two volumes which form these proceedings. This volume contains papers on the themes of 'Numerical Techniques for Engineering Analysis and Design' and 'Developments in Engineering Software'. Many new developments on a wide variety of topics have been reported and these proceedings contain a wealth of information and references which we believe will be of great interest to theoreticians and practising engineers alike.

Scientific and Technical Books in Print


Author: N.A
Publisher: N.A
ISBN: N.A
Category: Engineering
Page: N.A
View: 2162
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Computer and Control Abstracts


Author: N.A
Publisher: N.A
ISBN: N.A
Category: Computers
Page: N.A
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Books in Series


Author: N.A
Publisher: N.A
ISBN: N.A
Category: Monographic series
Page: N.A
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Mathematical Reviews


Author: N.A
Publisher: N.A
ISBN: N.A
Category: Mathematics
Page: N.A
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Einführung in die Kryptographie


Author: Johannes Buchmann
Publisher: Springer-Verlag
ISBN: 3642111866
Category: Mathematics
Page: 280
View: 6579
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Der Band behandelt die aktuellen Techniken der modernen Kryptographie wie Verschlüsselung und digitale Signaturen. Alle mathematischen Grundlagen werden anhand zahlreicher Beispiele und Übungen behandelt, so dass Lesern ein fundiertes Verständnis der modernen Kryptographie vermittelt wird. In die 5. Auflage hat der Autor die Beweise für die Sicherheit des Lamport-Diffie-Einmalsignaturverfahrens und des Merkle-Signaturverfahrens sowie einen Abschnitt über algebraische Angriffe auf Blockchiffren neu aufgenommen.

Finite-Elemente-Methoden


Author: Klaus-Jürgen Bathe
Publisher: Springer Verlag
ISBN: 9783540668060
Category: Technology & Engineering
Page: 1253
View: 8829
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Dieses Lehr- und Handbuch behandelt sowohl die elementaren Konzepte als auch die fortgeschrittenen und zukunftsweisenden linearen und nichtlinearen FE-Methoden in Statik, Dynamik, Festkörper- und Fluidmechanik. Es wird sowohl der physikalische als auch der mathematische Hintergrund der Prozeduren ausführlich und verständlich beschrieben. Das Werk enthält eine Vielzahl von ausgearbeiteten Beispielen, Rechnerübungen und Programmlisten. Als Übersetzung eines erfolgreichen amerikanischen Lehrbuchs hat es sich in zwei Auflagen auch bei den deutschsprachigen Ingenieuren etabliert. Die umfangreichen Änderungen gegenüber der Vorauflage innerhalb aller Kapitel - vor allem aber der fortgeschrittenen - spiegeln die rasche Entwicklung innerhalb des letzten Jahrzehnts auf diesem Gebiet wieder.

Eindeutige Analytische Funktionen


Author: Rolf Nevanlinna
Publisher: Springer-Verlag
ISBN: 3662068427
Category: Mathematics
Page: 379
View: 4648
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Die eindeutigen analytischen Funktionen können von verschiedenen Gesichtspunkten aus untersucht werden. Die in der vorliegenden Arbeit zur Darstellung gelangenden Fragen gruppieren sich um ein großes Hauptproblem. Einige allgemeine Bemerkungen über diese zentrale Fragestellung sollen hier vorausgeschickt werden. Wir denken uns ein gegebenes analytisches Funktionselement un beschränkt fortgesetzt. Angenommen, daß die so entstehende analytische Funktion w = w (z) eindeutig ist, existiert ein schlichtes Gebiet G mit z nachstehenden Eigenschaften. 1. Jedem inneren Punkt z von G entspricht ein und nur ein Element z von rationalem Charakter der Funktion w(z). 2. Jeder Randpunkt z* von G ist eine wesentliche Singularität z von w(z). Falls G die ganze geschlossene Ebene umfaßt (elliptischer Fall), z so ist w (z) eine rationale Funktion. Schließt man diesen einfachsten Sonderfall aus, so hat man zwei Fälle zu unterscheiden, je nachdem G z einfach oder mehrfach rusammenhängend ist. Wir beschränken uns auf den erstgenannten Fa}! und haben dann weitere zwei Möglichkeiten zu berücksichtigen: die Berandung r von G ist entweder ein Punkt z z (parabolischer Fall) oder ein Kontinuum (hyperbolischer Fall). Das Gebiet G wird durch die Funktion w = w (z) auf eine über der z w-Ebene ausgebreitete RIEMANNSche Fläche G .konform abgebildet. to Die Umkehrfunktion z = z(w) von w(z) ist eine auf dieser Fläche G to eindeutige und wegen der Eindeutigkeit von w (z) einwertige Funktion, d. h. den Mittelpunkten von zwei verschiedenen Elementen von z(w) sind stets zwei verschiedene Punkte z zugeordnet.