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Dissertations / Theses on the topic 'Entropy'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Bernier, Jobe Paul. "Entropy and Architecture entropic phenomena actuating dynamic space /." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/bernier/BernierJ0508.pdf.

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2

Sognnæs, Ida Andrea Braathen. "Maximum Entropy and Maximum Entropy Production in Macroecology." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12651.

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The Maximum Entropy Theory of Ecology (METE), developed by John Harte, presents an entirely new method of making inferences in ecology. The method is based on the established mathematical procedure of Maximum Information Entropy (MaxEnt), developed by Edwin T. Jaynes, and is used to derive a range of important relationships in macroecology. The Maximum Entropy Production (MEP) principle is a more recent theory. This principle was used by Paltridge to successfully predict the climate on Earth in 1975. It has been suggested that this principle can be used for predicting the evolution of ecosyst

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3

Asaad-Sultan, Asaad M. Abu. "Entropic vector optimization and simulated entropy : theory and applications." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293838.

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4

Cullen, Carley Nicole. "Empathy + entropy." Thesis, University of Iowa, 2019. https://ir.uiowa.edu/etd/6721.

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5

Šelinga, Martin. "Software pro hodnocení zdrojů entropie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-401953.

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This thesis is focused on exploring the sources of entropy. It includes a description of random number generators and tests used to evaluate entropy quality. Random number generator for Windows and Linux OS was created together with software for entropy evaluation. Subsequently, measurement of entropy was performed on physical workstations and Cloud environments.

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6

Mendes, Ronã Rinston Amaury [UNESP]. "Uma contribuição para a otimização de portfólios de séries heteroscedásticas usando projeto de experimento de misturas: uma abordagem do desirability aplicada a modelos." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/103053.

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Made available in DSpace on 2014-06-11T19:32:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-11-20Bitstream added on 2014-06-13T18:43:41Z : No. of bitstreams: 1 mendes_rra_dr_guara.pdf: 1241082 bytes, checksum: 7ae1222297e09f373622dfd724d0cbd5 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Esta tese apresenta uma proposta inovadora com base no DOE (Design of Experiments) para tratar a otimização de portfólios multiobjetivos utilizando uma abordagem híbrida que combina arranjos de experimentos do tipo Misturas (Mixture Design of Experiments – MDE) e

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7

Mendes, Ronã Rinston Amaury. "Uma contribuição para a otimização de portfólios de séries heteroscedásticas usando projeto de experimento de misturas: uma abordagem do desirability aplicada a modelos /." Guaratinguetá : [s.n.], 2012. http://hdl.handle.net/11449/103053.

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Orientador: Anderson Paulo de Paiva<br>Coorientador: Pedro Paulo Balestrassi<br>Banca: Marcela Aparecida Guerreira Machado de Freitas<br>Banca: Antonio Fernando Branco Costa<br>Banca: Rafael Coradi Leme<br>Banca: João Roberto Ferreira<br>Resumo: Esta tese apresenta uma proposta inovadora com base no DOE (Design of Experiments) para tratar a otimização de portfólios multiobjetivos utilizando uma abordagem híbrida que combina arranjos de experimentos do tipo Misturas (Mixture Design of Experiments - MDE) e funções Desirability para se encontrar um portfólio ótimo modelado pelo algoritmo ARMA-GAR

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8

Pougaza, Doriano-Boris. "Utilisation de la notion de copule en tomographie." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00684637.

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Cette thèse porte sur le lien entre la tomographie et la notion de copule. La tomographie à rayons X consiste à (re)construire la structure cachée d'un objet (une densité de matière, la distribution d'une quantité physique, ou une densité de loi conjointe) à partir de certaines données obtenues ou mesurées de l'objet (les projections, les radiographies, les densités marginales). Le lien entre les mesures et l'objet se modélise mathématiquement par la Transformée à Rayons X ou la Transformée de Radon. Par exemple, dans les problèmes d'imagerie en géométrie parallèle, lorsqu'on a seulement deux

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9

Nilsson, Mattias. "Entropy and Speech." Doctoral thesis, Stockholm : Sound and Image Processing Laboratory, School of Electrical Engineering, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3990.

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10

Charter, Mark Keith. "Maximum entropy pharmacokinetics." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316691.

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11

Casper, James Kyle. "Entropy and surfaceness." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/65050.

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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1997.<br>Includes bibliographical references (leaves 103-113).<br>The layer of the Earth's atmosphere which contains clouds and weather systems is a thin thermoregulatory surface. It maintains an exact energy budget between the Earth and the Sun. Recent work in theoretical physics is aimed at these types of dynamic systems. Key to a system such as the atmosphere is the constant yet fluctuating input of energy which forces the system into a state distant from its thermodynamic equilibrium. Certain physical systems,

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12

Li, Xing-Si. "Entropy and optimization." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235500.

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13

Taghavianfar, Mohsen. "An Investigation on Network Entropy-Gossiping Protocol and Anti-entropy Evaluation." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2684.

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This thesis is concerned with studying the behavior of a gossiping protocol in the specific sense meant by Ericsson; in the following pages I’ll introduce a Markov process which models the spread of information in such systems. The results will be verified by means of a discreet-event simulation.<br>Gossiping Protocols, are inherently random in behavior.Nonetheless, they are not structure-less. Their asymptotic behavior when implemented in large scales is the matter of focus in this thesis.<br>Tel: +46709700505 Address: Pinnharvsgatan 3 E lgh 1202 43147 Mölndal Sweden

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14

Lokaj, Jiří. "Hodnocení vztahu mezi kardiovaskulárními signály pomocí nelineárních metod." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-378149.

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The short-term regulation of blood pressure is influenced by many influences, some being represented by cardiovascular signals and their changes. Because of the complexity of this system, the linear methods for its analysis are not sufficient. Non-linear methods for time series analysis have been devised quite a lot. In the course of this work, the analysis of the relations of several signals was evaluated as the most suitable conditional entropy and the resulting indexes of affinity and directionality. This method was applied to a set of heart-rate signals and systolic and diastolic pressure

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15

Krempa, Peter. "Analysis of Entropy Levels in the Entropy Pool of Random Number Generator." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2013. http://www.nusl.cz/ntk/nusl-236179.

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V informatice je pojem entropie obvykle znám jako nahodný proud dat. Tato práce krátce shrnuje metody generovaní nahodných dat a popisuje generátor náhodnych čísel, jež je obsažen v jádře operačního systému Linux. Dále se práce zabývá určením bitové rychlosti generování nahodných dat tímto generátorem ve virtualizovaném prosředí, které poskytují různé hypervizory. Práce popíše problémy nízkého výkonu generátory nahodných dat ve virtualním prostředí a navrhne postup pro jejich řešení. Poté je nastíňena implementace navržených postupů, které je podrobena testům a její vysledky jsou porovnány

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16

Uthushagen, Kristian Siegel. "Entropy in Dynamical Networks." Thesis, Norges Teknisk-Naturvitenskaplige Universitet, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20918.

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This thesis presents a new type of dynamical entropy, defined by the movement of particles beetween the nodes in a network. The entropy is intended to have similar properties as the well-known thermodynamic entropy. Simulations are run on different versions of known networks, and exhibits expected behaviour. A few applications of the variable have also been suggested, in which topographical properties, centrality and node distance is decided in relative terms for spesific networks. In addition, a historical recap is the science of thermodynamics and networks is given, and also an explanation t

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17

Patterson, Brett Alexander. "Maximum entropy data analysis." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240969.

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18

Ibinson, Ben. "Quantum information and entropy." Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492602.

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19

Johnson, O. "Entropy and limit theorems." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.605633.

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This thesis uses techniques based on Shannon entropy to prove probabilistic limit theorems. Chapter 1 defines entropy and Fisher information, and reviews previous work. We reformulate the Central Limit Theorem to state that the entropy of sums of independent identically distribution real-value random variables converges to its unique maximum, the normal distribution. This is called convergence in relative entropy, and is proved by Barron. Chapter 2 extends Barron's results to non-identically distributed random variables, extending the Lindeberg-Feller Theorem, under similar conditions. Next, i

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20

Xie, Yong. "Maximum entropy in crystallography." Thesis, De Montfort University, 2003. http://hdl.handle.net/2086/4220.

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21

Purahoo, K. "Maximum entropy data analysis." Thesis, Cranfield University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260038.

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22

Pathak, Akhilesh. "Entropy Optimal Orthogonal Matrices." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1369696712.

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23

Gamundi, Michel. ""Two faces of entropy"." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1300130144.

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24

Cioe, Anthony. "Objects: Entropy and Temporality." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1602.

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The transparent qualities of glass lend to the creation of elements that suggest presence and absence. I often use glass as a surrogate for lost time or space in an object, comparable to the human prosthetic and the notion of a phantom limb. Recent objects of exploration have included broken bottles, fallen tree limbs, and a human skull. The practical knowledge I gained while working in a conservation lab has directly influenced the methodology for treating these objects of disrepair. My primary impetus is a desire to construct what has been lost during an objects existence and reveal sublime

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25

Stellato, Marco. "Horizon entropy from scratch." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6693/.

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Scopo di questo lavoro di tesi è lo studio di alcune proprietà delle teorie generali della gravità in relazione alla meccanica e la termodinamica dei buchi neri. In particolare, la trattazione che seguirà ha lo scopo di fornire un percorso autoconsistente che conduca alla nozione di entropia di un orizzonte descritta in termini delle carica di Noether associata all'invarianza del funzionale d'azione, che descrive la teoria gravitazionale in considerazione, per trasformazioni di coordinate generali. Si presterà particolare attenzione ad alcune proprietà geometriche della Lagrangiana, proprietà

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26

Piquard, Colin. "Entropy in Quantum Nanocircuits." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP152.

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Mesurer l'entropie dans des systèmes fortement corrélés dépasse le simple comptage des micro-états accessibles dans l'état fondamental, apportant des informations cruciales là où les observables traditionnelles, telles que la conductance, peuvent s'avérer insuffisantes. Toutefois, les mesures classiques d'entropie, souvent basées sur des propriétés globales, manquent de la sensibilité nécessaire pour des systèmes contenant seulement quelques particules.Dans cette étude, nous examinons l'évolution de l'entropie dans un système non-liquide de Fermi à travers l'analyse d'une impureté de Kondo. Ce

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27

Sampaio, Claudio Luis Marques. "Busca de um tamanho otimo de gene e proteina para maximização da qualidade da filogenia resultante." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317448.

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Orientador: Gonçalo Amarante Guimarães Pereira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-15T21:36:16Z (GMT). No. of bitstreams: 1 Sampaio_ClaudioLuisMarques_M.pdf: 2335220 bytes, checksum: 0b5237faca34d31d6e2743587c4b32fd (MD5) Previous issue date: 2010<br>Resumo: Um problema recorrente em Filogenética é saber de antemão que melhores tamanhos de genes ou proteínas se deve ter para a construção de dendrogramas mais precisos. Neste trabalho, examinamos quais os efeitos de variados tamanhos de um alinhamento conhe

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28

JAIN, PARUL. "Aspects of the relation between the black hole entropy and the entanglement entropy." Doctoral thesis, Università degli Studi di Cagliari, 2019. http://hdl.handle.net/11584/259889.

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The relationship between Bekenstein-Hawking and entanglement entropy is one of the most intriguing problems of black hole and theoretical physics. Although both entropies have the same geometric characterization (they scale as an area), they have a different origin. The Bekenstein-Hawking entropy has it’s roots in the thermal correlations whereas the entanglement entropy describes the quantum correlations. In this thesis we address this problem from a holographic perspective, making large use of the AdS/CFT correspondence. We first look at the BTZ black hole in which case the black hole hor

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29

Ribeiro, Patrick. "Analyse entropique et multi-échelle pour la fatigue et la rupture thermomécanique." Thesis, Paris 10, 2017. http://www.theses.fr/2017PA100108/document.

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Ce travail de thèse apporte une contribution à l’utilisation de grandeurs thermodynamiques ainsi que géométriques en mécanique. La première partie de ce manuscrit est consacrée à l’étude de la fatigue oligocyclique, et de l’entropie de rupture en fatigue. Des entropies de rupture en fatigue sont estimées expérimentalement par diverses relations et sont comparées aux modèles empiriques utilisés dans la littérature. Il apparait que ces diverses entropies de rupture sont très proches ce qui permet de conclure qu'il existe une entropie de rupture constante liée uniquement au matériau. Pour les mod

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30

Sagarra, Pascual Oleguer Josep. "Non-binary maximum entropy network ensembles and their application to the study of urban mobility." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/400560.

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Complex networks grow subject to structural constraints which affect their measurable properties. Assessing the effect that such constraints impose on their observables is thus a crucial aspect to be taken into account in their analysis, if one wants to quantify the effect a given topological property has on other observed network quantities observed in empirical datasets. Null models are needed for this end. A well understood analytical approach to face the generation and development of flexible models for binary networks is based on considering ensembles of networks obtained using an entr

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31

Kobayashi, Jorge Mamoru. "Entropy: algoritmo de substituição de linhas de cache inspirado na entropia da informação." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-29112016-102603/.

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Este trabalho apresenta um estudo sobre o problema de substituição de linhas de cache em microprocessadores. Inspirado no conceito de Entropia da Informação proposto em 1948 por Claude E. Shannon, este trabalho propõe uma nova heurística de substituição de linhas de cache. Seu objetivo é capturar e explorar melhor a localidade de referência dos programas e diminuir a taxa de miss rate durante a execução dos programas. O algoritmo proposto, Entropy, utiliza a heurística de entropia da informação para estimar as chances de uma linha ou bloco de cache ser referenciado após ter sido carregado na c

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32

Percca, Edwin Marcos Maraví. "Resolução do problema de Riemann através de um método variacional." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/4037.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-11T14:36:03Z No. of bitstreams: 1 edwinmarcosmaravipercca.pdf: 1012447 bytes, checksum: f4600cdbca54aedbb08335b949e92788 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-17T20:09:05Z (GMT) No. of bitstreams: 1 edwinmarcosmaravipercca.pdf: 1012447 bytes, checksum: f4600cdbca54aedbb08335b949e92788 (MD5)<br>Made available in DSpace on 2017-04-17T20:09:05Z (GMT). No. of bitstreams: 1 edwinmarcosmaravipercca.pdf: 1012447 bytes, checksum: f4600cdbca54aedbb08335b949e92788 (MD5) Pr

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De, Fazio Cecilia. "Entanglement Entropy In Excited States." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15833/.

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Negli ultimi anni l’entropia di entaglement è stata ampiamente studiata nel campo dell‘integrabilità. Con l‘introduzione del modello a replica è stato possibile portare alla luce le proprietà universali dell’ entropia di entanglement di un sistema bipartito nello stato di vuoto. In questa tesi si è investigato il problema dell’entropia di entanglement di un sistema bipartito in uno stato eccitato di singola particella. In particolare, si è considerata una teoria bosonica libera in un volume finito, in modo da sfruttare al meglio le tecniche dell‘integrabilità. Nel corso di questa anali

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34

Paavola, M. (Marko). "An efficient entropy estimation approach." Doctoral thesis, Oulun yliopisto, 2011. http://urn.fi/urn:isbn:9789514295935.

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Abstract Advances in miniaturisation have led to the development of new wireless measurement technologies such as wireless sensor networks (WSNs). A WSN consists of low cost nodes, which are battery-operated devices, capable of sensing the environment, transmitting and receiving, and computing. While a WSN has several advantages, including cost-effectiveness and easy installation, the nodes suffer from small memory, low computing power, small bandwidth and limited energy supply. In order to cope with restrictions on resources, data processing methods should be as efficient as possible. As a re

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35

Nickerson, William Alexander. "Developments in minimum entropy deconvolution." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26015.

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Minimum entropy deconvolution (MED) is investigated in light of recent work, and reports of poor performance in the deconvolution of real reflection seismograms. The problems with MED fall into two catagories. The first contains problems related to operator design such as avoiding local extrema in the simplicity criterion, problems with bandwidth, and the selection of filter length and preprocessing parameters. The second is the determination of model validity for the data at hand. MED is based on the iterative maximization of a data simplicity criterion which exhibits multiple extrema. A geo

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36

Joret, Gwenaël. "Entropy and stability in graphs." Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210605.

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Un stable (ou ensemble indépendant) est un ensemble de sommets qui sont deux à deux non adjacents. De nombreux résultats classiques en optimisation combinatoire portent sur le nombre de stabilité (défini comme la plus grande taille d'un stable), et les stables se classent certainement parmi les structures les plus simples et fondamentales en théorie des graphes.<p><p>La thèse est divisée en deux parties, toutes deux liées à la notion de stables dans un graphe. Dans la première partie, nous étudions un problème de coloration de graphes, c'est à dire de partition en stables, où le but est de min

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37

Karamanos, Konstantinos. "Entropy analysis of nonequilibrium systems." Doctoral thesis, Universite Libre de Bruxelles, 2002. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211390.

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Moher, Michael L. "Cross-entropy and iterative detection." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq22171.pdf.

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39

Foltin, Christian. "Billiards with positive topological entropy /." Bonn : Univ, 2000. http://www.gbv.de/dms/goettingen/331681293.pdf.

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40

Mustafa, Denis. "Minimum entropy H#infinity# control." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306487.

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41

Sun, Yun. "Network coding and graph entropy." Thesis, Queen Mary, University of London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509608.

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42

Sung, Shih-Ta. "Black hole entropy and models." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4677/.

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No universally accepted statistical explanation of black hole entropy exists up to now, therefore, it is worth another try. Admittedly, black hole entropy does not have to have a statistical origin. If the "black hole entropy" is called "black hole index" instead, someone might be lured to give it an economic explanation. Nonetheless, the only way to justify one's claim about the statistical origin of black hole entropy is to compute it statistically. This is the motivation for the construction of black hole models. In chapter 1, I first review the four laws of classical black hole mechanics w

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43

Anand, Gautam. "Simulation of high-entropy materials." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/20063/.

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Multicomponent materials containing a comparatively large number of different elemental components, yet exhibiting simple crystal structures have opened up a new era of materials design with the possibility of tuning properties of materials with greater degrees of freedom. This poses a formidable challenge in terms of design as the number of parameters involved in simulating such systems increase significantly with the increasing number of components. This work reports a sampling methodology based on hybrid genetic algorithm-molecular dynamics for sampling positional-disordered materials such

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44

Le, Floch-Yin François T. (François Thomas). "Entropy generation in fluid mixing." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36169.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2006.<br>Includes bibliographical references (leaf 64).<br>This thesis describes the processes of viscous dissipation in two generic situations for mixing flows. The objective is to illustrate, with simple examples, details of the entropy generation processes that are captured in an overall manner by a control volume analysis. The two situations are parallel mixing flows in a duct and the evolution of a wake in a centrifugal compressor. Results are given for the evolution of the velocity profile and fo

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45

Monteiro, André Bosque. "Entropy statistics and aeronautical evolution." Instituto Tecnológico de Aeronáutica, 2006. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2169.

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Employing the probabilistic entropy methodology, one of the objectives of this work is to develop a robust and simple tool to be employed in the empirical analysis of airplane configuration and technology evolution. Two specific analyses were performed to validate the procedure. One is the evolution of civil aviation transportation in the jet age (1950-2006) and the other being the evolution of fighter aircraft during the period of 1914 to 2009. An extensive study was carried out in order to select the variables used to describe each aircraft. After the creation of the aircraft databank, the t

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46

Williams, Jeremy M. "Lyapunov Exponents, Entropy and Dimension." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4559/.

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We consider diffeomorphisms of a compact Riemann Surface. A development of Oseledec's Multiplicative Ergodic Theorem is given, along with a development of measure theoretic entropy and dimension. The main result, due to L.S. Young, is that for certain diffeomorphisms of a surface, there is a beautiful relationship between these three concepts; namely that the entropy equals dimension times expansion.

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47

Moher, Michael L. Carleton University Dissertation Engineering Systems and Computer. "Cross-entropy and iterative detection." Ottawa, 1997.

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48

Kaewtem, Thanatkrit. "Entropy numbers in sequence spaces." Thesis, University of Bristol, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.738278.

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49

Meneghetti, Alessio. "Optimal Codes and Entropy Extractors." Doctoral thesis, Università degli studi di Trento, 2017. https://hdl.handle.net/11572/368164.

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In this work we deal with both Coding Theory and Entropy Extraction for Random Number Generators to be used for cryptographic purposes. We start from a thorough analysis of known bounds on code parameters and a study of the properties of Hadamard codes. We find of particular interest the Griesmer bound, which is a strong result known to be true only for linear codes. We try to extend it to all codes, and we can determine many parameters for which the Griesmer bound is true also for nonlinear codes. In case of systematic codes, a class of codes including linear codes, we can derive stronger res

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50

Meneghetti, Alessio. "Optimal Codes and Entropy Extractors." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/1893/1/AM_thesis.pdf.

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Abstract:

In this work we deal with both Coding Theory and Entropy Extraction for Random Number Generators to be used for cryptographic purposes. We start from a thorough analysis of known bounds on code parameters and a study of the properties of Hadamard codes. We find of particular interest the Griesmer bound, which is a strong result known to be true only for linear codes. We try to extend it to all codes, and we can determine many parameters for which the Griesmer bound is true also for nonlinear codes. In case of systematic codes, a class of codes including linear codes, we can derive stronger res

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