Relevant bibliographies by topics / Entropie

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Entropie'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 June 2025

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Journal articles on the topic "Entropie"

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Fox, Dirk. "Entropie." Datenschutz und Datensicherheit - DuD 32, no. 8 (2008): 543. http://dx.doi.org/10.1007/s11623-008-0128-2.

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Alombert, Anne, and Michał Krzykawski. "Jakie transformacje energetyczne na rzecz trzech ekologii? Entropie, ekologie i gospodarka w erze antropocenu." Er(r)go. Teoria - Literatura - Kultura, no. 44 (June 25, 2021): 11–28. http://dx.doi.org/10.31261/errgo.12260.

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"Jakie transformacje energetyczne na rzecz trzech ekologii? Entropie, ekologie i gospodarka w erze antropocenu"
 Artykuł rozpatruje współczesny kryzys ekologiczny jako potrójny problem ekologii środowiskowej, ekologii mentalnej i ekologii społecznej: podczas gdy ekosystemy naturalne są zagrożone przez infrastrukturę przemysłową, która służy eksploatacji surowców mineralnych i bazującej na niej zglobalizowanej ekonomii konsumpcyjnej, ekosystemy psychiczne i społeczne są zagrożone przez połączone urządzenia, które służą eksploatowaniu zasobów libidalnych i bazującej na nich ekonomii uwagi i gospodarce opartej na danych. Ten potrójny kryzys ekologiczny jest opisany w artykule jako proces wzrostu entropii na różnych poziomach (termodynamicznym, biologicznym, informacyjnym lub psychospołecznym). Odwrócenie tego procesu wymaga podwójnej transformacji energetycznej: takiej, która pozwala z umiarem gospodarować energią pochodzącą z zasobów mineralnych i otaczać je troską, oraz takiej, która pozwala na to samo w odniesieniu do energii psychicznej i libidalnej. Artykuł odwołuje się do prac Nicolasa Georgescu-Roegena i Bernarda Stieglera, którzy opisują taką transformację jako walkę ze wzrostem entropii, z jednej strony prowadzoną z perspektywy fizycznej i środowiskowej, a z drugiej – z perspektywy psychicznej, technicznej i społecznej.
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Hinrichsen, Haye. "Entropie entmystifiziert." Physik in unserer Zeit 43, no. 5 (2012): 246–51. http://dx.doi.org/10.1002/piuz.201201298.

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Rammelt, Crelis. "Hoe entropie ons aanzet tot ontgroeien." Waardenwerk (Journal of Humanistic Studies) 24, no. 93 (2023): 36–41. http://dx.doi.org/10.36254/ww.2023.93.04.

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Een vraatzuchtig beest verorbert om de 20 maanden een hele Mount Everest aan grondstoffen en verhoogt zijn stofwisseling dusdanig dat het over 20 jaar slechts 10 maanden nodig heeft om de berg weg te werken.1 Terwijl het beest zijn buik vult, put het zijn omgeving uit en belast het deze met afval, waardoor natuurlijke systemen die verantwoordelijk zijn voor het regenereren van grondstoffen en het absorberen van afvalstoffen ontwricht raken. Het beest vernietigt zijn eigen habitat. Ik heb het natuurlijk over het kapitalisme op wereldschaal. Dit systeem vereist dat er voortdurend kapitaal wordt geaccumuleerd en wankelt zodra het proces wordt belemmerd. De reactie op de ecologische crisis is doorgaans niet om de economische groei af te zwakken, maar om te vertrouwen op efficiëntie, circulariteit, dematerialisatie, de-carbonisatie en andere winstmakende groene innovaties binnen het kapitalisme. In dit stuk betoog ik dat deze hoop vals is, omdat entropie altijd op de loer ligt. Entropie is een natuurkundige maatstaf voor wanorde, en dat zien we overal om ons heen toenemen: alles vergaat, rot, desintegreert en raakt in wanorde. Tegelijkertijd brengt de biosfeer ook orde aan door middel van fotosynthese, ecologische successie of celregeneratie in organismen. Dit vertraagt en verlaagt de entropie. In dit artikel demonstreer ik hoe het kapitalistische systeem deze balans verstoort en de entropie alsmaar sneller doet toenemen. Dit heeft tot gevolg dat natuurlijke entropie-verlagende processen overweldigd worden. Vervolgens maak ik duidelijk waarom circulaire en andere groene economieën gevangen zitten in vruchteloze pogingen om groei los te koppelen van zijn negatieve ecologische gevolgen. We moeten ons openstellen voor het idee van een economie die niet per se hoeft te groeien. Ik pleit daarom voor het radicale alternatief van degrowth of ontgroeien.
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Büchel, Wolfgang. "Kausalität und Entropie." Zeitschrift für allgemeine Wissenschaftstheorie 18, no. 1-2 (1987): 92–95. http://dx.doi.org/10.1007/bf01801079.

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Zin, Jean. "Entropie et décroissance." EcoRev' N° 20, no. 2 (2005): 11–14. http://dx.doi.org/10.3917/ecorev.020.0011.

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Talukdar, Himansu, Sibaprasad Rudra, and Kiron K. Kundu. "Single-ion transfer energetics of some ions using tetraphenylarsonium tetraphenylborate reference electrolyte assumption in aqueous mixtures of urea and glycerol." Canadian Journal of Chemistry 67, no. 2 (1989): 321–29. http://dx.doi.org/10.1139/v89-053.

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Single-ion transfer free energies [Formula: see text] and entropies [Formula: see text] of some ions from water to aqueous mixtures of urea and glycerol have been determined using the widely used tetraphenylarsonium tetraphenylborate reference electrolyte assumption from solubility and emf measurements of some appropriate electrolytes at five different temperatures (15 to 35 °C). Analysis of [Formula: see text] and [Formula: see text] values of the ions as well as their respective "chemical" effect, [Formula: see text] and [Formula: see text] as obtained after correcting for their cavity and Born-type electrostatic effects, estimated by the scaled particle theory (SPT) and simple Born equation, respectively, show a complex dependence upon solvent composition. Attempts have been made to explain the observed mirror-image entropie behaviour of simple cations and anions in the light of Kundu etal.'s four-step transfer process and to compare the results with those obtained in other aquo-ionic and nonionic systems. Keywords: single ion, transfer energetics, TATB assumption, aqueous glycerol, aqueous urea.
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Picaud, Jean-Claude. "Entropie contre exposant critique." Séminaire de théorie spectrale et géométrie 24 (2006): 61–66. http://dx.doi.org/10.5802/tsg.240.

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Host, Bernard. "Nombres normaux, entropie, translations." Israel Journal of Mathematics 91, no. 1-3 (1995): 419–28. http://dx.doi.org/10.1007/bf02761660.

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Ghys, E., R. Langevin, and P. Walczak. "Entropie geometrique des feuilletages." Acta Mathematica 160 (1988): 105–42. http://dx.doi.org/10.1007/bf02392274.

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Dissertations / Theses on the topic "Entropie"

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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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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 projections à deux angles de 0 et pi/2 (horizontale et verticale), le problème peut être identifié comme un autre problème très important en mathématique qui est la détermination d'une densité conjointe à partir de ses marginales. En se limitant à deux projections, les deux problèmes sont des problèmes mal posés au sens de Hadamard. Il faut alors ajouter de l'information a priori, ou bien des contraintes supplémentaires. L'apport principal de cette thèse est l'utilisation des critères de plusieurs entropies (Rényi, Tsallis, Burg, Shannon) permettant d'aboutir à une solution régularisée. Ce travail couvre alors différents domaines. Les aspects mathématiques de la tomographie via l'élément fondamental qui est la transformée de Radon. En probabilité sur la recherche d'une loi conjointe connaissant ses lois marginales d'où la notion de ''copule'' via le théorème de Sklar. Avec seulement deux projections, ce problème est extrêmement difficile. Mais en assimilant les deux projections (normalisées) aux densités marginales et l'image à reconstruire à une densité de probabilité, le lien se fait et les deux problèmes sont équivalents et peuvent se transposer dans le cadre statistique. Pour caractériser toutes les images possibles à reconstruire on a choisi alors l'outil de la théorie de probabilité, c'est-à-dire les copules. Et pour faire notre choix parmi les copules ou les images nous avons imposé le critère d'information a priori qui se base sur différentes entropies. L'entropie est une quantité scientifique importante car elle est utilisée dans divers domaines (en Thermodynamique, en théorie de l'information, etc). Ainsi, en utilisant par exemple l'entropie de Rényi nous avons découvert de nouvelles classes de copules. Cette thèse apporte de nouvelles contributions à l'imagerie, par l'interaction entre les domaines qui sont la tomographie et la théorie des probabilités et statistiques.
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Zang, Yuntao. "Relations between entropies, exponents and dimensions." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS138.

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Nous nous concentrons sur les relations entre entropies, exposants et dimensions pour des dynamiques différenciables. Nous proposons une preuve simplifiée de la formule d'entropie de Ledrappier-Young. Ensuite, en utilisant la formule d'entropie de Ledrappier-Young et la théorie de Pesin, nous avons lié l'entropie d'une mesure ergodique par une combinaison d'exposants de Lyapunov et de divers invariants sur les variétés instables telles que la croissance du volume, les entropies topologiques et les entropies fibrées.Nous étudions également de façon systématique les entropies dites dimensionnelles et leurs applications aux systèmes entropiques hyperboliques<br>We focus on the relations between entropies, exponents and dimensions for differentiable dynamics. We propose a simplified proof of Ledrappier-Young entropy formula. Then by using Ledrappier-Young entropy formula and Pesin theory, we bound the entropy of an ergodic measure by a combination of Lyapunov exponents and various invariants on the unstable manifolds such as volume growth, topological entropies and fibered entropies.We also systemically investigate the so called dimensional entropies and their applications to entropy-hyperbolic systems
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Zemánek, Ladislav. "Analýza variability srdečního rytmu pomocí entropie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220014.

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The analysis of HRV is an advanced and noninvasive method which is used to investigate the involuntary nervous system. It is also one of the important parameters of its proper function. Heart rate variability can also be analyzed by entropy, which studies the discrepancy of the RR intervals of the HRV signal and thus can be used to diagnose cardiac diseases
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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 modèles empiriques, une extension du modèle de Ramberg-Osgood cyclique prenant en compte la variation temporelle de la contrainte est proposée et une étude sur l'imprécision du modèle de Park et Nelson est réalisée. Puis, une étude des différentes phases durant le test de fatigue est effectuée à travers l’étude de l’endommagement lié à l’entropie accumulée par le matériau. Une extension par l’utilisation du concept d’exergie permet la mise en évidence d’une nouvelle quantité, une exergie associée au travail de déformation plastique faisant intervenir une notion de qualité de la déformation plastique. Dans une deuxième partie, la diffusion de l’entropie d’échelle est étudiée et permet de créer divers comportements dépendants d’échelle. Elle permet d’étudier la log-périodicité d’un fractal déterministe fini (ou préfractal) ou de vérifier la construction de géométries déterministes finies dépendantes d’échelle. Une application de ces modèles dépendants d’échelle est effectuée dans le cadre de la détermination de propriétés mécaniques, pour l’analyse de faciès de rupture et pour la fragmentation. Finalement un lien possible entre comportement mécanique, géométrie et théorie constructale est présenté<br>This Phd thesis is a contribution to the use of thermodynamics and geometry in mechanics. The first part of this manuscript is devoted to the study of low cycle fatigue and the notion of fracture fatigue entropy. Fracture fatigue entropies are experimentally estimated by various equations and compared to empirical models used in the litterature. It appears that these diverse fracture fatigue entropies are very close and allows to conclude that a constant fracture fatigue entropy exists only depending on the material. For the empirical models, an extension of the Ramberg-Osgood model is proposed taking into account the temporal variation of the loading, and, a study on the inaccuracy of the Park and Nelson model is realized. Then, a study on the different phases occurring in a fatigue test is done through the study of a damage parameter based on the entropy accumulated by the material. An extension using the concept of exergy allows the highlight of a new quantity, an exergy associated with plastic strain involving a quality factor. In a second part, the diffusion of scale-entropy is studied and permits to create various scale-dependent behaviors. It allows the study of log-periodicity of a finite deterministic fractal (or prefractal), or the verification of finite deterministic scale-dependent geometries. An application of these scale-dependent models is performed within the framework of the determination of mechanical properties, for the analysis of fractured surfaces and for fragmentation. Finally, a possible link between mechanical behavior, geometry and constructal theory is presented
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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 signals measured on eight adults and nine children. Relationships were analyzed but unfortunately after the statistical test was held the expected information links between the individual signals were not established. The indices were very small - in the hundredths of bits. Finally, optimization of the algorithm of the whole method has been performed and the newly modified function already shows significantly better results, for example strong information binding from the time-series of systolic pressure to a series of diastolic pressures.
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Béal, Marie-Pierre. "Codage, automates locaux et entropie." Paris 7, 1987. http://www.theses.fr/1987PA077181.

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Presentation des methodes de codage de suites binaires en des suites dont les facteurs satisfont certaines contraintes traduisant des limitations physiques dans des systemes de transmission ou de stockage de donnees. Traitement sous l'angle de la theorie des codes et des automates finis
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Beal, Marie-Pierre. "Codage, automates locaux et entropie." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37602676r.

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Miščík, Peter. "Odhad entropie a komprese biologických sekvencí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219952.

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This master thesis describes theoretical knowledge of biological sequences, principles entropy rate estimates and possibilities of compression of DNA sequences using the substitution methods. Thesis includes practical application of the compression algorithm and practical estimation of entropy.
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Merlin, Louis. "Entropie minimale des espaces localement symétriques." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0110/document.

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Nous donnons dans cette thèse une preuve du problème de l’entropie volumique minimale dans les quotients compacts de H2_H2. Une conjecture de Gromov et Katok prétend en effet que, sur un espace localement symétrique (M; g0), la métrique de plus petite entropie volumique parmi les métriques de volume fixé est la métrique g0. Le texte se veut relativement abordable. C’est pourquoi nous avons intégré un premier chapitre qui contient une bonne partie du matériel qui sera utilisé par la suite. Puis nous passons en revue les preuves des différents cas du problème déjà traités. Le cas des quotients compacts de H2_H2 n’était pas connu avant ce travail ; nous en détaillons minutieusement la preuve. Notre démarche consiste à faire fonctionner la méthode de calibration imaginée dans [BCG95]. Nous présentons aussi les principales applications qui découlent de la preuve de la conjecture de Gromov et Katok. Nous concluons par une discussion heuristique qui explique les enjeux du problème que nous étudions<br>In this thesis we give an overview of the volume entropy rigidity problem. A conjecture by Gromov and Katok states that, on a locally symmetric space (M; g0), the symmetric metric g0 has minimal volume entropy among metrices with the same total volume. The text is self-contained, assuming a basic knowledge in differential geometry. Therefore we discuss in the first chapter some background material used in the sequel. The case of compact quotients of H2 _ H2 was unknown before this work ; we give a fully detailled proof. The key-point is to build a calibrating form as in [BCG95]. As a by-product, we present some applications provided by the proof of the volume entropy rigidity conjecture. We conclude by an informal section explaining the motivations of the problem to a non-mathematical reader
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Books on the topic "Entropie"

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Ivanovici, Andreea Livia. Entropie, volatilitate: Entropy, volatility. Editura Fundaţiei Arhitext Design, 2014.

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Schürmann, Wilhelm. Wilhelm Schürmann: Entropy at home = Entropie zu Hause. Only Photography, 2014.

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Kümmel, Reiner, Dietmar Lindenberger, and Niko Paech. Energie, Entropie, Kreativität. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-57858-2.

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Becker, Volker, and Heinrich Schipperges, eds. Entropie und Pathogenese. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84927-5.

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Herwig, Heinz. Wärme und Entropie. Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-26970-8.

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Herwig, Heinz, and Tammo Wenterodt. Entropie für Ingenieure. Vieweg+Teubner Verlag, 2012. http://dx.doi.org/10.1007/978-3-8348-8628-6.

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Branger, Nicole. Bewertung nicht redundanter Finanzderivate mittels Entropie und Cross-Entropie. Deutscher Universitätsverlag, 2002. http://dx.doi.org/10.1007/978-3-322-89658-2.

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Ebeling, Werner, Jan Freund, and Frank Schweitzer. Komplexe Strukturen: Entropie und Information. Vieweg+Teubner Verlag, 1998. http://dx.doi.org/10.1007/978-3-322-85167-3.

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Boltzmann, Ludwig. Entropie und Wahrscheinlichkeit: (1872-1905). H. Deutsch, 2000.

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Darcanges, Jacques. L' entropie galopante des libéralismes. Editions de l'Orme, 1995.

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Book chapters on the topic "Entropie"

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Jablonka, Kevin Maik. "Entropie." In essentials. Springer Fachmedien Wiesbaden, 2017. http://dx.doi.org/10.1007/978-3-658-17021-9_4.

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Müller, Wolfgang H. "Entropie." In Streifzüge durch die Kontinuumstheorie. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19870-0_12.

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Müller, Ingo. "Entropie." In Grundzüge der Thermodynamik. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56474-1_4.

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Povh, Bogdan, and Elisabeth Soergel. "Entropie." In Anschauliche Physik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54496-5_8.

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Müller, Ingo. "Entropie." In Grundzüge der Thermodynamik. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-98003-9_4.

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Neunhäuserer, Jörg. "Entropie." In Einführung in die Ergodentheorie. Springer Fachmedien Wiesbaden, 2020. http://dx.doi.org/10.1007/978-3-658-31292-3_5.

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Roth, Stefan, and Achim Stahl. "Entropie." In Mechanik und Wärmelehre. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-45304-9_23.

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Povh, Bogdan. "Entropie." In Anschauliche Physik. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17787-3_8.

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Ruelle, David. "Entropie." In Zufall und Chaos. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-97394-9_17.

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Müller, Ingo. "Entropie." In Grundzüge der Thermodynamik. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-97586-8_4.

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Conference papers on the topic "Entropie"

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Lau, Chin Wa, and Chandra Nair. "An Entropic Inequality in Finite Abelian Groups Analogous to the Unified Brascamp-Lieb and Entropy Power Inequality." In 2024 IEEE International Symposium on Information Theory (ISIT). IEEE, 2024. http://dx.doi.org/10.1109/isit57864.2024.10619257.

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Moraru, Luminita, Lucian Dimitrievici, and Simona Moldovanu. "Entropie characterization of random cerebral structures in MR images." In 2016 20th International Conference on System Theory, Control and Computing (ICSTCC). IEEE, 2016. http://dx.doi.org/10.1109/icstcc.2016.7790720.

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Schuster, F., T. Emcke, T. Ostermann, and R. Schuster. "Gender- und altersspezifische Analysen der Diagnosestruktur unter Verwendung der Shannon-Entropie." In Gemeinsam forschen – gemeinsam handeln. Georg Thieme Verlag KG, 2017. http://dx.doi.org/10.1055/s-0037-1605741.

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Lazarev, Viktor L., and Olga L. Zhdanova. "A systematic approach for evaluating entropie potentials concerning monitoring and control tasks." In 2017 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). IEEE, 2017. http://dx.doi.org/10.1109/eiconrus.2017.7910706.

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Tufano, Dante A., and Zahra Sotoudeh. "Introducing Entropy for the Statistical Energy Analysis of an Artificially Damped Oscillator." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50591.

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The purpose of this paper is to introduce the concept of entropy for a main resonator attached to a “fuzzy structure”. This structure is described explicitly using the Lagrangian method, and is treated as a layer of discrete resonators. A generic entropy formulation is then developed for the layer of resonators, which is used to determine the individual oscillator entropies. The combined entropy of the linear resonator system is then determined and compared numerically to the sum of the individual oscillator entropies. The entropy behavior of the system is then related to the energy behavior of the system and explained in regards to the the “artificial damping” of the main resonator.
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Bas¸lamıs¸lı, S. C¸ag˘lar, and Selis O¨nel. "Entropy Based Classification of Road-Profiles." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24448.

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In this study, the Shannon entropies of six different road-profiles ranging from “very good asphalt road” to “dirt road (terrain)” were calculated. Results indicate that each type of road has a well defined entropy value and that the entropies of roads ranging from “very good asphalt” to “dirt road (terrain)” lie on a nearly linear locus. A second approach presented in this paper consists in measuring the sprung mass vertical acceleration of a vehicle running over segments of roads of different qualities and calculating the entropies of the acceleration signals. This procedure has been applied to assess the influence of nonlinear damping and vehicle speed. It has been seen that it is possible to identify the type of the road surface through the calculation of entropy if the vehicle operating parameters are known. Finally, it is observed that the locus of entropy values is concave on the plot of acceleration entropy versus root mean square (RMS) acceleration.
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Pidaparthi, Bharath, Peiwen Li, and Samy Missoum. "Entropy-Based Optimization of Helical Fins for Heat Transfer Enhancement Inside Tubes." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24025.

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Abstract The design optimization of a tube with internal helical fins is considered from an entropy generation point of view. The primary focus of the article is to study the optimization results based on entropy-based formulations. Specifically, this work compares the optimal design solution obtained through the minimization of total entropy and through the multiobjective optimization of the heat transfer and frictional entropies when considered as two separate objectives. The latter quantities being associated with heat transfer and pressure drops, it is shown that, from a design optimization point of view, it is important to separate both entropies which are conflicting objectives.
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Imanian, Anahita, and Mohammad Modarres. "Corrosion-Fatigue Structural Integrity Assessment Using a Thermodynamic Entropy Based Damage Approach." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53452.

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Using fundamentals of irreversible thermodynamics, with specific focus on entropy generation, this paper studies the structural integrity of degraded materials. All damage mechanisms share a common feature namely energy dissipation. Dissipation, as a fundamental measure for irreversibility in a thermodynamic treatment of non-equilibrium processes, is quantified by entropy generation. Based on the theoretical relationship between entropy generation and generalized thermodynamic forces and fluxes, the entropic damage is measured during a corrosion-fatigue degradation experiment. Life estimation of components, which were subject to complex corrosion-fatigue degradation mechanism, was then estimated through a proposed entropic-based prognostic framework. The performance of predictions was evaluated and compared with previous predictions in terms of the influence of additional features on components health assessment.
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Motheau, Emmanuel, Franck Nicoud, and Thierry Poinsot. "Using Boundary Conditions to Account for Mean Flow Effects in a Zero Mach Number Acoustic Solver." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68852.

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The present study is devoted to the modeling of mean flow effects while computing thermoacoustic modes under the zero Mach number assumption. It is first recalled that the acoustic impedance modelling a compressor or a turbine must be prescribed under an energetical form instead of the classical acoustic variables. Then we demonstrate the feasibility to take into account the coupling between acoustic and entropy waves in a zero Mach number framework to capture a family of low frequency entropic modes. The proposed approach relies on a new Delayed Entropy Coupled Boundary Condition (DECBC) and proves able to capture a family of Low frequency entropic mode even though no mean flow term is included into the fluctuating pressure equation.
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TSUKADA, MAKOTO. "THE MAXIMUM ENTROPY PRINCIPLE FOR GENERALIZED ENTROPIES." In Quantum Bio-Informatics — From Quantum Information to Bio-Informatics. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812793171_0033.

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Reports on the topic "Entropie"

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Zilberman, Mark. Good and Evil from the Point of View of Physics. Intellectual Archive, 2022. http://dx.doi.org/10.32370/iaj.2763.

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The article analyzes the concepts of "good" and "evil" from the point of view of physics. Although the physical concept of “entropy” as a measure of disorder was the first candidate who could serve as the physical basis of these ethical concepts, in fact it is not suitable for this purpose. However, the “entropic potential of the event” Z (T, A) that describes the impact of the event A that occurred in the moment T0 in the system R to the entropy of this system at the future moment T (T &gt; T0) is well suited for our analysis. The article describes methods for calculating the “entropic potential of the event” for certain real-life events and discuss several other related ideas, such as “time factor”, “averaging” and “universality”.
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Bielinskyi, Andriy, Serhiy Semerikov, Oleksandr Serdiuk, Victoria Solovieva, Vladimir Soloviev, and Lukáš Pichl. Econophysics of sustainability indices. [б. в.], 2020. http://dx.doi.org/10.31812/123456789/4118.

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In this paper, the possibility of using some econophysical methods for quantitative assessment of complexity measures: entropy (Shannon, Approximate and Permutation entropies), fractal (Multifractal detrended fluctuation analysis – MF-DFA), and quantum (Heisenberg uncertainty principle) is investigated. Comparing the capability of both entropies, it is obtained that both measures are presented to be computationally efficient, robust, and useful. Each of them detects patterns that are general for crisis states. The similar results are for other measures. MF-DFA approach gives evidence that Dow Jones Sustainability Index is multifractal, and the degree of it changes significantly at different periods. Moreover, we demonstrate that the quantum apparatus of econophysics has reliable models for the identification of instability periods. We conclude that these measures make it possible to establish that the socially responsive exhibits characteristic patterns of complexity, and the proposed measures of complexity allow us to build indicators-precursors of critical and crisis phenomena.
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Soloviev, Vladimir N., Andrii O. Bielinskyi, and Natalia A. Kharadzjan. Coverage of the Coronavirus Pandemic through Entropy Measures. CEUR Workshop Proceedings, 2021. http://dx.doi.org/10.31812/123456789/4427.

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The rapidly evolving coronavirus pandemic brings a devastating effect on the entire world and its economy as awhole. Further instability related to COVID-19will negatively affect not only on companies and financial markets, but also on traders and investors that have been interested in saving their investment, minimizing risks, and making decisions such as how to manage their resources, how much to consume and save, when to buy or sell stocks, etc., and these decisions depend on the expectation of when to expect next critical change. Trying to help people in their subsequent decisions, we demonstrate the possibility of constructing indicators of critical and crash phenomena on the example of Bitcoin market crashes for further demonstration of their efficiency on the crash that is related to the coronavirus pandemic. For this purpose, the methods of the theory of complex systems have been used. Since the theory of complex systems has quite an extensive toolkit for exploring the nonlinear complex system, we take a look at the application of the concept of entropy in finance and use this concept to construct 6 effective entropy measures: Shannon entropy, Approximate entropy, Permutation entropy, and 3 Recurrence based entropies. We provide computational results that prove that these indicators could have been used to identify the beginning of the crash and predict the future course of events associated with the current pandemic.
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Martins, Andre F., Mario A. Figueiredo, Pedro M. Aguiar, Noah Smith, and Eric P. Xing. Nonextensive Entropic Kernels. Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada487475.

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Alioğulları, Zeynel Harun, and Mehmet Barlo. Entropic selection of Nash equilibrium. Sabancı University, 2012. http://dx.doi.org/10.5900/su_fass_wp.2012.18910.

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Uohashi, Keiko. Generalized Entropies and Legendre Duality. Defense Technical Information Center, 2012. http://dx.doi.org/10.21236/ada559903.

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Danylchuk, H., V. Derbentsev, Володимир Миколайович Соловйов, and A. Sharapov. Entropy analysis of dynamic properties of regional stock markets. Society for Cultural and Scientific Progress in Central and Eastern Europe, 2016. http://dx.doi.org/10.31812/0564/1154.

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This paper examines entropy analysis of regional stock markets. We propose and empirically demonstrate the effectiveness of using such entropy as sample entropy, wavelet and Tsallis entropy as a measure of uncertainty and instability of such complex systems as regional stock markets. Our results show that these entropy measures can be effectively used as crisis prediction indicators.
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Schennach, Susanne M. Entropic Latent Variable Integration via Simulation. Cemmap, 2013. http://dx.doi.org/10.1920/wp.cem.2013.3213.

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Cordwell, William, and Mark Torgerson. PUF Entropy. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/2431723.

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McDougall, Robert. Entropy Theory and RAS are Friends. GTAP Working Paper, 2000. http://dx.doi.org/10.21642/gtap.wp06.

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Presented at the Second Annual Conference on Global Economic Analysis Recent research in applications of entropy theory to matrix balancing problems in eco-nomics has put powerful new tools in the hands of data base developers, but overshadowed some previous findings. We recall earlier findings that the RAS is an entropy-theoretic model. Investigating the properties of a more recently proposed entropy-theoretic model, we find that in general the RAS remains preferable. We show further that the RAS can be obtained also as a generalised cross-entropy model. Finally, we present examples illus-trating how entropy-theoretic techniques can extend the RAS to handle a wider range of problems.
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