ETUDE DES GENERATEURS DE PERMUTATIONS PSEUDO-ALEATOIRES BASES SUR LE SCHEMA DU D.E.S PDF Download
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Author: JACQUES.. PATARIN
Publisher:
ISBN: 9782726107119
Category :
Languages : fr
Pages : 228
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Book Description
DANS LA PARTIE I, ON PRESENTE UNE NOUVELLE DEMONSTRATION D'UN RESULTAT OBTENU EN 1988 PAR M. LUBY ET C. RACKOFF SUR LES GENERATEURS DE PERMUTATIONS BASES SUR LE SCHEMA DU D.E.S. ON MET AINSI EN LUMIERE D'IMPORTANTES PROPRIETES DE BASE DE CES GENERATEURS. DANS LA PARTIE II, LES PRINCIPAUX NOUVEAUX RESULTATS OBTENUS SONT LES SUIVANTS: 1) IL EST POSSIBLE D'OBTENIR UN GENERATEUR DE PERMUTATIONS PSEUDO-ALEATOIRES AVEC TROIS PASSES DU SCHEMA DU D.E.S. ET UNE UNIQUE FONCTION ALEATOIRE; 2) IL EST POSSIBLE D'OBTENIR UN GENERATEUR DE PERMUTATIONS SUPER PSEUDO-ALEATOIRES AVEC QUATRE PASSES DU SCHEMA DU D.E.S. ET UNE UNIQUE FONCTION ALEATOIRE. CES RESULTATS SONT OPTIMAUX. DANS LA PARTIE III ON OBSERVE FINEMENT CE QUI SE PASSE LORSQUE L'ON AUGMENTE LE NOMBRE DE PASSES. ON OBSERVE ALORS UNE DECROISSANCE EXPONENTIELLE DE LA PROBABILITE DE DISTINGUER LES PERMUTATIONS GENEREES DE PERMUTATIONS ALEATOIRES. ENFIN, LA PARTIE IV, INDEPENDANTE DES AUTRES, INDIQUE COMMENT CASSER LA FONCTION DE HACHAGE PROPOSEE PAR I. DAMGARD A CRYPTO'89
Author: JACQUES.. PATARIN
Publisher:
ISBN: 9782726107119
Category :
Languages : fr
Pages : 228
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Book Description
DANS LA PARTIE I, ON PRESENTE UNE NOUVELLE DEMONSTRATION D'UN RESULTAT OBTENU EN 1988 PAR M. LUBY ET C. RACKOFF SUR LES GENERATEURS DE PERMUTATIONS BASES SUR LE SCHEMA DU D.E.S. ON MET AINSI EN LUMIERE D'IMPORTANTES PROPRIETES DE BASE DE CES GENERATEURS. DANS LA PARTIE II, LES PRINCIPAUX NOUVEAUX RESULTATS OBTENUS SONT LES SUIVANTS: 1) IL EST POSSIBLE D'OBTENIR UN GENERATEUR DE PERMUTATIONS PSEUDO-ALEATOIRES AVEC TROIS PASSES DU SCHEMA DU D.E.S. ET UNE UNIQUE FONCTION ALEATOIRE; 2) IL EST POSSIBLE D'OBTENIR UN GENERATEUR DE PERMUTATIONS SUPER PSEUDO-ALEATOIRES AVEC QUATRE PASSES DU SCHEMA DU D.E.S. ET UNE UNIQUE FONCTION ALEATOIRE. CES RESULTATS SONT OPTIMAUX. DANS LA PARTIE III ON OBSERVE FINEMENT CE QUI SE PASSE LORSQUE L'ON AUGMENTE LE NOMBRE DE PASSES. ON OBSERVE ALORS UNE DECROISSANCE EXPONENTIELLE DE LA PROBABILITE DE DISTINGUER LES PERMUTATIONS GENEREES DE PERMUTATIONS ALEATOIRES. ENFIN, LA PARTIE IV, INDEPENDANTE DES AUTRES, INDIQUE COMMENT CASSER LA FONCTION DE HACHAGE PROPOSEE PAR I. DAMGARD A CRYPTO'89
Author: Jacques Patarin
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
Author: Valentine Roux
Publisher: Springer
ISBN: 3030039730
Category : Social Science
Languages : en
Pages : 356
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Book Description
Pottery is the most ubiquitous find in most historical archaeological excavations and serves as the basis for much research in the discipline. But it is not only its frequency that makes it a prime dataset for such research, it is also that pottery embeds many dimensions of the human experience, ranging from the purely technical to the eminently symbolic. The aim of this book is to provide a cutting-edge theoretical and methodological framework, as well as a practical guide, for archaeologists, students and researchers to study ceramic assemblages. As opposed to the conventional typological approach, which focuses on vessel shape and assumed function with the main goal of establishing a chronological sequence, the proposed framework is based on the technological approach. Such an approach utilizes the concept of chaîne opératoire, which is geared to an anthropological interpretation of archaeological objects. The author offers a sound theoretical background accompanied by an original research strategy whose presentation is at the heart of this book. This research strategy is presented in successive chapters that are geared to explain not only how to study archaeological assemblages, but also why the proposed methods are essential for achieving ambitious interpretive goals. In the heated debate on the equation stating that “pots equal people”, which is a rather fuzzy reference to assumed relationships between (mostly) ethnic groups and pottery, technology enables us to propose with conviction the equation “pots equal potters”. In this way, a well-founded history of potters is able to achieve a much better cultural and anthropological understanding of ancient societies.
Author: Elliott D. Kaplan
Publisher: Artech House Mobile Communicat
ISBN:
Category : Transportation
Languages : en
Pages : 738
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Book Description
Appendix B:Stability Measures for Frequency Sources 665Appendix C:Free-Space Propagation Loss 669; About the Authors 675; Index 683; Mobile Communications Library.
Author: Joseph Felsenstein
Publisher: Springer Science & Business Media
ISBN: 3642690246
Category : Science
Languages : en
Pages : 655
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Book Description
The NATO Advanced Study Institute on Numerical Taxonomy took place on the 4th - 16th of July, 1982, at the Kur- und Kongresshotel Residenz in Bad Windsheim, Federal Republic of Germany. This volume is the proceedings of that meeting, and contains papers by over two-thirds of the participants in the Institute. Numerical taxonomy has been attracting increased attention from systematists and evolutionary biologists. It is an area which has been marked by debate and conflict, sometimes bitter. Happily, this meeting took place in an atmosphere of "GemUtlichkeit", though scarcely of unanimity. I believe that these papers will show that there is an increased understanding by each taxonomic school of each others' positions. This augurs a period in which the debates become more concrete and specific. Let us hope that they take place in a scientific atmosphere which has occasionally been lacking in the past. Since the order of presentation of papers in the meeting was affected by time constraints, I have taken the liberty of rearranging them into a more coherent subject ordering. The first group of papers, taken from the opening and closing days of the meeting, debate philosophies of classification. The next two sections have papers on congruence, clustering and ordination. A notable concern of these participants is the comparison and testing of classifications. This has been missing from many previous discussions of numerical classification.
Author: Arjen K. Lenstra
Publisher: Springer
ISBN: 3540478922
Category : Mathematics
Languages : en
Pages : 138
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Book Description
The number field sieve is an algorithm for finding the prime factors of large integers. It depends on algebraic number theory. Proposed by John Pollard in 1988, the method was used in 1990 to factor the ninth Fermat number, a 155-digit integer. The algorithm is most suited to numbers of a special form, but there is a promising variant that applies in general. This volume contains six research papers that describe the operation of the number field sieve, from both theoretical and practical perspectives. Pollard's original manuscript is included. In addition, there is an annotated bibliography of directly related literature.
Author: H. A. Thurston
Publisher: Courier Corporation
ISBN: 0486154947
Category : Mathematics
Languages : en
Pages : 146
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Book Description
This book explores arithmetic's underlying concepts and their logical development, in addition to a detailed, systematic construction of the number systems of rational, real, and complex numbers. 1956 edition.
Author: Patrick Siarry
Publisher: Springer
ISBN: 331945403X
Category : Computers
Languages : en
Pages : 501
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Book Description
Metaheuristics exhibit desirable properties like simplicity, easy parallelizability, and ready applicability to different types of optimization problems. After a comprehensive introduction to the field, the contributed chapters in this book include explanations of the main metaheuristics techniques, including simulated annealing, tabu search, evolutionary algorithms, artificial ants, and particle swarms, followed by chapters that demonstrate their applications to problems such as multiobjective optimization, logistics, vehicle routing, and air traffic management. The authors are leading researchers in this domain, with considerable teaching and applications experience, and the book will be of value to industrial practitioners, graduate students, and research academics.
Author: Steven M. Kay
Publisher: Pearson Education
ISBN: 013280803X
Category : Technology & Engineering
Languages : en
Pages : 496
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Book Description
"For those involved in the design and implementation of signal processing algorithms, this book strikes a balance between highly theoretical expositions and the more practical treatments, covering only those approaches necessary for obtaining an optimal estimator and analyzing its performance. Author Steven M. Kay discusses classical estimation followed by Bayesian estimation, and illustrates the theory with numerous pedagogical and real-world examples."--Cover, volume 1.
Author: Neural Information Processing Systems Foundation
Publisher: MIT Press
ISBN: 0262026171
Category : Algorithms
Languages : en
Pages : 361
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Book Description
State-of-the-art algorithms and theory in a novel domain of machine learning, prediction when the output has structure.
