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Dissertations / Theses on the topic 'Mathematical models. Calculus'

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Published: 4 June 2021
Last updated: 2 February 2022

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1

Clemence, Robert D. "A type calculus for mathematical programming modeling languages." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA238160.

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Dissertation (Ph.D. in Operations Research)--Naval Postgraduate School, September 1990.<br>Dissertation supervisor: Bradley, Gordon H. "September 1990." Description based on title screen viewed on December 17, 2009. DTIC Descriptor(s): Mathematical models, sizes (dimensions), validation, models, programming languages, drug addiction, algebra, mathematical programming, language, junctions, calculus, homogeneity, integrated systems, mathematical logic. DTIC Identifier(s): Programming languages, mathematical models, calculus, linear programming. Author(s) subject terms: Data types, integrated mod
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2

Almusharrf, Amera. "Development of Fractional Trigonometry and an Application of Fractional Calculus to Pharmacokinetic Model." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1048.

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3

Fanelli, Francesco. "Mathematical analysis of models of non-homogeneous fluids and of hyperbolic equations with low regularity coefficients." Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00794508.

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The present thesis is devoted both to the study of strictly hyperbolic operators with low regularity coefficients and of the density-dependent incompressible Euler system. On the one hand, we show a priori estimates for a second order strictly hyperbolic operator whose highest order coefficients satisfy a log-Zygmund continuity condition in time and a log-Lipschitz continuity condition with respect to space. Such an estimate involves a time increasing loss of derivatives. Nevertheless, this is enough to recover well-posedness for the associated Cauchy problem in the space $H^infty$ (for suitab
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De, Marco Stefano. "On probability distributions of diffusions and financial models with non-globally smooth coefficients." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00588686.

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Some recent works in the field of mathematical finance have brought new light on the importance of studying the regularity and the tail asymptotics of distributions for certain classes of diffusions with non-globally smooth coefficients. In this Ph.D. dissertation we deal with some issues in this framework. In a first part, we study the existence, smoothness and space asymptotics of densities for the solutions of stochastic differential equations assuming only local conditions on the coefficients of the equation. Our analysis is based on Malliavin calculus tools and on " tube estimates " for I
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5

Machado, Rosa Maria 1958. "A visualização na resolução de problemas de calculo diferencial e integral no ambiente computacional MPP." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/251984.

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Orientador: João Frederico da Costa Azevedo Meyer<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação<br>Made available in DSpace on 2018-08-11T02:52:29Z (GMT). No. of bitstreams: 1 Machado_RosaMaria_D.pdf: 3367118 bytes, checksum: b77aa02d12be829dfb0764fd79481758 (MD5) Previous issue date: 2008<br>Resumo: São escassos os estudos a respeito da utilização da ferramenta computacional no ensino do Cálculo Diferencial e Integral nas universidades brasileiras. Contudo, em países como a Grã-Bretanha, Estados Unidos, Alemanha, México, Espanha, Colômbia e Venezuela, esses
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Forsan, Juliana Froes [UNESP]. "Estudo e aprofundamento de alguns modelos matemáticos apresentados no ensino médio." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151705.

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Submitted by JULIANA FROES FORSAN (juliana_ff@hotmail.com) on 2017-09-24T22:08:30Z No. of bitstreams: 1 1_Juliana_Froes_Forsan_Dissertacao_Mestrado_Profmat.pdf: 48728620 bytes, checksum: ca33b6f6fe78c0be5e8eea5d84e2c681 (MD5)<br>Approved for entry into archive by Monique Sasaki (sayumi_sasaki@hotmail.com) on 2017-09-27T19:55:50Z (GMT) No. of bitstreams: 1 forsan_jf_me_rcla.pdf: 48728620 bytes, checksum: ca33b6f6fe78c0be5e8eea5d84e2c681 (MD5)<br>Made available in DSpace on 2017-09-27T19:55:50Z (GMT). No. of bitstreams: 1 forsan_jf_me_rcla.pdf: 48728620 bytes, checksum: ca33b6f6fe78c0be5e8ee
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Diepenveen, Emily. "Relational models of the lambda calculus." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27679.

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In [7], Ehrhard et al. present a model of the untyped lambda calculus built from an object without enough points in a cartesian closed category MRel. This thesis presents the background needed to construct and understand this model. In particular we describe what it means for models to have enough points and exhibit connections between MRel with various categorical models of lambda calculus in the literature. In particular, we are able to relate the graph model to MRel. We also describe connections with various kinds of Kleisli categories arising from comonads and their associated theory.
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8

Kalisz, Piotr. "On partial semigroup models for the Lambek calculus." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29728.pdf.

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9

Beaulieu, Guy. "Finding presheaf models for the finite pi-calculus." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6206.

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This thesis provides a fully-abstract (set theoretical) model for the finite pi-calculus with respect to late-bisimulation and late-equivalence relations. This is achieved by amalgamating the works by M. P. Fiore, E. Moggi and D. Sangiorgi, and I. Stark. In their respective works the authors construct categorical models, and define a meta-language in which the finite pi-calculus can be interpreted. We discuss the general properties a categorical model should satisfy to be considered an appropriate model for the finite pi-calculus. In particular, I show that the categorical model based on the s
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10

Charoenphon, Sutthirut. "Green's Functions of Discrete Fractional Calculus Boundary Value Problems and an Application of Discrete Fractional Calculus to a Pharmacokinetic Model." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1327.

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Fractional calculus has been used as a research tool in the fields of pharmacology, biology, chemistry, and other areas [3]. The main purpose of this thesis is to calculate Green's functions of fractional difference equations, and to model problems in pharmacokinetics. We claim that the discrete fractional calculus yields the best prediction performance compared to the continuous fractional calculus in the application of a one-compartmental model of drug concentration. In Chapter 1, the Gamma function and its properties are discussed to establish a theoretical basis. Additionally, the basics o
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11

Arora, Raman. "Analysis of Economic Models Through Calculus of Variations." TopSCHOLAR®, 2005. http://digitalcommons.wku.edu/theses/453.

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This thesis is a combination of two science fields: Mathematics and Economics. Mathematics is often used to formulate a clear and concise solution to economic problems. In my observation calculus of variation has often been used in various macroeconomic problems. This mathematical method deals with maximizing or minimizing of various objective functions given a set of constraints. This topic brings out one of the best ways to show the relationship between mathematics and economics. My thesis consists of three parts: The first chapter contains a review of the calculus of variations. Basic defin
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12

Florio, Salvatore. "Completeness of the Predicate Calculus in the Basic Theory of Predication." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281927327.

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13

Alonso, Ana Camila Rodrigues 1981. "Um modelo matematico para calcular o indice de risco de malignidade de tumores do ovario utilizando a teoria dos conjuntos fuzzy." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307574.

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Orientador: Laercio Luis Vendite<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Ciencia da Computação<br>Made available in DSpace on 2018-08-09T23:40:27Z (GMT). No. of bitstreams: 1 Alonso_AnaCamilaRodrigues_M.pdf: 1099108 bytes, checksum: f7bd5d3bc8e683d7332a70d7a75c8405 (MD5) Previous issue date: 2007<br>Resumo: O câncer de ovário é a neoplasia mais letal do aparelho genital feminino. É necessário fazer um estabelecimento precoce de seu diagnóstico e uma correta abordagem terapêutica para interferir na sua história natural. Com a inten
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14

Moru, Eunice Kolitsoe. "Epistemological obstacles in coming to understand the limit concept at undergraduate level: a case of the National University of Lesotho." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_2638_1182747979.

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<p>The purpose of this study was to investigate the epistemological obstacles that mathematics students at undergraduate level encounter in coming to understand the limit concept. The role played by language and symbolism in understanding the limit concept was also investigated. A group of mathematics students at undergraduate level at the National University of Lesotho (NUL) was used as the sample for the study. Empirical data were collected by using interviews and questionnaires. These data were analysed using both the APOS framework and a semiotic perspective.</p> <p><br /> Within the APOS
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15

Liu, Po-Hung, Ching-Ching Lin, Tung-Shyan Chen, et al. "A Collaborative Model for Calculus Reform—A Preliminary Report." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-80534.

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For the past two decades, both pros and cons of calculus reform have been discussed. A question often asked is, “Has the calculus reform project improved students’ understanding of mathematics?” The advocates of the reform movement claim that reform-based calculus may help students gain an intuitive understanding of mathematical propositions and have a better grasp of the real-world applications. Nonetheless, many still question its effect and argue that calculus reform purges calculus of its mathematical rigor and poorly prepares students for advanced mathematical training. East Asian student
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16

GUIMARAES, MARIA I. C. C. "Desenvolvimento do manequim matematico do homem brasileiro para calculos de dosimetria interna." reponame:Repositório Institucional do IPEN, 1995. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10437.

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Made available in DSpace on 2014-10-09T12:38:44Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:04:51Z (GMT). No. of bitstreams: 1 06045.pdf: 15655492 bytes, checksum: 6cfb83e47451ce75631c870bbce0e7cd (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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17

Klein, Robert Matthew. "Student and teacher a model and criteria to understand and evaluate authority issues in the technology classroom /." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1069360912.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xiv, 221 p.; also includes graphics. Includes bibliographical references (p. 204-210).
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18

Loader, Ralph. "Models of lambda calculi and linear logic : structural, equational and proof-theoretic characterisations." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282167.

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19

Nair, Girija Sarada. "College Students’ Concept Images of Asymptotes, Limits, and Continuity of Rational Functions." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1282259818.

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20

Bouteca, Maurice. "Fracturation hydraulique calcul de propagation d'une fracture induite dans un massif rocheux /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603363t.

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21

YORIYAZ, HELIO. "Desenvolvimento de uma metodologia computacional para calculos em dosimetria interna." reponame:Repositório Institucional do IPEN, 2000. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10791.

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Made available in DSpace on 2014-10-09T12:44:03Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:55Z (GMT). No. of bitstreams: 1 06878.pdf: 8623929 bytes, checksum: 9403b721e2a38e59f0a65c626040f7f0 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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22

Jones, Brian Lindley. "A Psychometric Analysis of the Precalculus Concept Assessment." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8918.

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The purpose of this study was to examine the psychometric properties of the Precalculus Concept Assessment (PCA), a 25-item multiple-choice instrument designed to assess student reasoning abilities and understanding of foundational calculus concepts (Carlson et al., 2010). When this study was conducted, the extant research on the PCA and the PCA Taxonomy lacked in-depth investigations of the instruments' psychometric properties. Most notably was the lack of studies into the validity of the internal structure of PCA response data implied by the PCA Taxonomy. This study specifically investigated
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23

Tolaba, Angel Gustavo. "Otimização de bioprocessos baseada em modelos matemáticos e cálculo variacional /." Araraquara, 2019. http://hdl.handle.net/11449/190747.

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Orientador: Samuel Conceição de Oliveira<br>Resumo: A determinação da estratégia de controle adequada para bioprocessos batelada e batelada alimentada é uma questão prática importante devido ao alto valor agregado de alguns bioprodutos. Desde que é altamente desejável otimizar a produção de bioprodutos, vários métodos têm sido propostos para esse objetivo. Uma vez dispondo de um modelo matemático adequado para o bioprocesso, o problema de otimização pode ser formulado no âmbito do princípio do máximo de Pontryagin e da teoria de controle ótimo para determinar a melhor trajetória de controle pa
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Yemane, Kidane. "Relations in Models of Calculi and Logics with Names." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6245.

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25

Uyanik, Meltem. "Analysis of Discrete Fractional Operators and Discrete Fractional Rheological Models." TopSCHOLAR®, 2015. http://digitalcommons.wku.edu/theses/1491.

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This thesis is comprised of two main parts: Monotonicity results on discrete fractional operators and discrete fractional rheological constitutive equations. In the first part of the thesis, we introduce and prove new monotonicity concepts in discrete fractional calculus. In the remainder, we carry previous results about fractional rheological models to the discrete fractional case. The discrete method is expected to provide a better understanding of the concept than the continuous case as this has been the case in the past. In the first chapter, we give brief information about the main result
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26

Berger, Rémi. "Intégration et validation expérimentale de la méthode VOF dans les calculs aérodynamiques automobiles: application au cas de l'entrainement d'eau dans les circuits de climatisation." Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210049.

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Cette étude porte sur l'utilisation conjointe (appelée ” couplage ”) de modèle de turbulence à grandes échelles LES (Large Eddy Simulation) et du modèle multiphasique VOF (Volume of Fluid). Cette utilisation conjointe est nécessaire dans de nombreuses applications industrielles comme celles de l'automobile où l'on recherche par exemple à évaluer les prestations diphasiques de l'auvent liées au phénomène d'entraînement et d'ingestion d'une nappe d'eau par le HVAC (système d'air conditionné). Cependant, l'utilisation conjointe de ces méthodes nécessite un traitement particulier de la turbulence
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Couka, Enguerrand. "Modélisation des propriétés optiques de peintures par microstructures aléatoires et calculs numériques FFT." Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0034/document.

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Cette thèse s'inscrit dans la thématique classique de l'homogénéisation des milieux hétérogènes linéaires et a pour but l'étude et la prédiction du comportement optique de couches de peintures. L'objectif est double : d'une part caractériser et modéliser la microstructure hétérogène des matériaux utilisés dans les revêtements de peinture, d'autre part prédire le comportement optique de ces matériaux par des moyens numériques, et étudier l'influence de la morphologie sur les propriétés optiques. Ces travaux ont été faits dans le cadre du projet LIMA (Lumière Interaction Matière Aspect), soutenu
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28

Helmers, Michael. "Kinks in a model for two-phase lipid bilayer membranes." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:15343985-1b1c-4123-838d-8e157e837db1.

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In the spontaneous curvature model for two-phase lipid bilayer membranes the shape of vesicles is governed by a combination of an elastic bending energy and an interface energy that penalises the size of phase boundaries. Each lipid phase induces a preferred curvature to the membrane surface, and these curvatures as well as phase boundaries may lead to the development of kinks. In a rotationally symmetric setting we introduce a family of energies for smooth surfaces and phase fields for the lipid components and study convergence to a sharp-interface limit, which depends on the choice of the be
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Buerger, Johannes Albert. "Fast model predictive control." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:6e296415-f02c-4bc2-b171-3bee80fc081a.

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This thesis develops efficient optimization methods for Model Predictive Control (MPC) to enable its application to constrained systems with fast and uncertain dynamics. The key contribution is an active set method which exploits the parametric nature of the sequential optimization problem and is obtained from a dynamic programming formulation of the MPC problem. This method is first applied to the nominal linear MPC problem and is successively extended to linear systems with additive uncertainty and input constraints or state/input constraints. The thesis discusses both offline (projection-ba
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30

Tsvigu, Chipo. "Students' experiences, learning styles and understanding of certain calculus concepts: A case of distance learning at the Zimbabwe open University." Thesis, University of the Western Cape, 2007. http://hdl.handle.net/11394/8480.

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Philosophiae Doctor - PhD<br>This study attempts to understand how distance education practices influence the learning of calculus. Understanding student learning in a distance education environment is an important factor to consider in improving the learning experiences of those students who for one reason or the other opt not to study in conventional institutions of higher education. On one hand, understanding student learning may illuminate the influences that the learning environment has on student learning and on the other hand, it may inform on how learning experiences can be improved.
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Gemmer, John Alan. "Shape Selection in the Non-Euclidean Model of Elasticity." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/223311.

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In this dissertation we investigate the behavior of radially symmetric non-Euclidean plates of thickness t with constant negative Gaussian curvature. We present a complete study of these plates using the Föppl-von Kármán and Kirchhoff reduced theories of elasticity. Motivated by experimental results, we focus on deformations with a periodic profile. For the Föppl-von Kármán model, we prove rigorously that minimizers of the elastic energy converge to saddle shaped isometric immersions. In studying this convergence, we prove rigorous upper and lower bounds for the energy that scale like the thic
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Gaillard, Pierre. "Calcul numérique des ondes de gravité dans les zones littorales et les aménagements portuaires : [thèse soutenue sur un ensemble de travaux]." Grenoble 1, 1988. http://www.theses.fr/1988GRE10079.

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Methodes de calcul sur ordinateur concernant la propagation de la houle, tenant compte des effets combines de refraction due aux fonds, de diffraction et reflexion dus aux ouvrages maritimes. Problemes de houles periodiques et irregulieres, et de houles regulieres (variation du niveau moyen de la mer et des courants), ainsi que de diffraction des ondes longues par des ouvrages offshore. Cas des seiches dans les ports et de houle irreguliere en canal en presence d'un ouvrage reflechissant. Comparaison avec essais en laboratoire et autres methodes theoriques
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Fouotsa, Emmanuel. "Calcul des couplages et arithmétique des courbes elliptiques pour la cryptographie." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00919779.

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Alors qu'initialement utilisés pour résoudre le Problème du Logarithme Discret (DLP) dans le groupe de points d'une courbe elliptique, les couplages sont très à la mode en cryptographie ces années car ils permettent de construire de nouveaux protocoles cryptographiques. Cependant, le calcul efficace du couplage dépend de l'arithmétique du modèle de courbe elliptique choisi et du corps sur lequel cette courbe est définie. Dans cette thèse, nous calculons le couplage sur deux modèles de Jacobi de courbes elliptiques puis nous introduisons et étudions l'arithmétique d'un nouveau modèle d'Ewards d
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Viho, Agbélénko Goudjo. "Étude de modèles markoviens en génétique et calculs des temps d'absorption." Grenoble 1, 1996. http://www.theses.fr/1996GRE10121.

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Cette thèse porte sur l'étude de la modélisation de l'évolution, par des processus markoviens, de l'effectif d'un gène donné au cours des générations dans une population à taille limitée. Dans une première partie, nous faisons un recensement des différents types de chaînes de Markov homogènes utilisées dans la littérature pour une telle modélisation. Quand la taille de la population est grande, il est possible d'obtenir la convergence de ces chaînes de Markov vers des processus de diffusion homogènes grâce aux théorèmes de convergence qui font l'objet de la deuxième partie. La troisième partie
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Rachelli, Janice. "COMPREENSÃO DOS CONCEITOS DE DERIVADA CLÁSSICA E DERIVADA FRACA: ANÁLISE SEGUNDO O MODELO COGNITIVO APOS." Centro Universitário Franciscano, 2017. http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/601.

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Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-20T17:53:01Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Tese_JaniceRachelli.pdf: 4818944 bytes, checksum: 0c02a81d2b4c04364b21e1ddddc2fe58 (MD5)<br>Made available in DSpace on 2018-08-20T17:53:01Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Tese_JaniceRachelli.pdf: 4818944 bytes, checksum: 0c02a81d2b4c04364b21e1ddddc2fe58 (MD5) Previous issue date: 2017-10-03<br>The present study is on the field of Mathematics Education in highe
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Merejolli, Reginaldo [UNESP]. "Desenvolvimento de um método numérico para simular escoamentos viscoelásticos axissimétricos com superfícies livres: Modelo PTT." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/94321.

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Made available in DSpace on 2014-06-11T19:27:08Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-04-24Bitstream added on 2014-06-13T18:55:34Z : No. of bitstreams: 1 merejolli_r_me_prud.pdf: 1357578 bytes, checksum: 415c634c0e40bf216c3855bc04b34cf3 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Neste trabalho é apresentado um método numérico para simular escoamentos viscoelásticos axissimétricos com superfícies livres modelados pela equação constitutiva PTT (Phan-Thien-Tanner). As equações governantes para escoamentos axissimétricos transientes incompressíveis
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Merejolli, Reginaldo. "Desenvolvimento de um método numérico para simular escoamentos viscoelásticos axissimétricos com superfícies livres : Modelo PTT /." Presidente Prudente, 2013. http://hdl.handle.net/11449/94321.

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Orientador: Gilcilene Sanchez de Paulo<br>Coorientador: José Roberto Nogueira<br>Banca: Messias Menguette Júnior<br>Banca: Murilo Francisco Tomé<br>Resumo: Neste trabalho é apresentado um método numérico para simular escoamentos viscoelásticos axissimétricos com superfícies livres modelados pela equação constitutiva PTT (Phan-Thien-Tanner). As equações governantes para escoamentos axissimétricos transientes incompressíveis de um fluido PTT são resolvidas utilizando o método de diferenças finitas numa malha deslocada. As derivadas temporais da equação do momento e da equação constitutiva são in
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Brasco, Lorenzo. "Geodesics and PDE methods in transport models." Phd thesis, Université Paris Dauphine - Paris IX, 2010. http://tel.archives-ouvertes.fr/tel-00578447.

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Cette thèse est dédiée à l'étude des problèmes de transport optimal, alternatifs au problème de Monge-Kantorovich : ils apparaissent naturellement dans des applications pratiques, telles que la conception des réseaux de transport optimal ou la modélisation des problèmes de circulation urbaine. En particulier, nous considérons des problèmes où le coût du transport a une dèpendance non linèaire de la masse : typiquement dans ce type de problèmes, le côut pour déplacer une masse $m$ pour une longueur $\ell$ est $\varphi(m)\, \ell$, où $\varphi$ est une fonction assignée, obtenant ainsi un coût to
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39

Beltrão, Maria Eli Puga. "Ensino de cálculo pela modelagem matemática e aplicações: teoria e prática." Pontifícia Universidade Católica de São Paulo, 2009. https://tede2.pucsp.br/handle/handle/11394.

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Made available in DSpace on 2016-04-27T16:58:54Z (GMT). No. of bitstreams: 1 Maria Eli Puga Beltrao.pdf: 5463067 bytes, checksum: 8e269f179312f1286e150e6d3b354a6b (MD5) Previous issue date: 2009-06-15<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This theses aims at the research of the use of Modelling and Applications as Mathematics teaching approach. The investigation consists of two main directional points: theoretical and empirical. The first was developed by the study of documents which provide historical data, data about the creation and development of Undergraduate
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40

Lopes, Ada Amelia Sanders. "Desenvolvimento de uma metodologia, com base na teoria Fuzzy, aplicada a modelos da demanda bioquÃmica de oxigÃnio (DBO) e oxigÃnio dissolvido (OD), para calcular o risco de degradaÃÃo ambiental em rios naturais." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=3801.

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CoordenaÃÃo de AperfeiÃoamento de NÃvel Superior<br>Com base nos PrincÃpios de Transporte de Massa, o modelo matemÃtico desenvolvido neste estudo estabelece as relaÃÃes entre a Demanda BioquÃmica do OxigÃnio (DBO) e o OxigÃnio Dissolvido (OD), para diferentes fontes de lanÃamentos. A aplicaÃÃo da teoria fuzzy neste modelo de transporte de poluente permite que as incertezas existentes nas variÃveis envolvidas nestes processos, especificamente na soluÃÃo da equaÃÃo da difusÃo advectiva, sejam capazes de avaliar os riscos de contaminaÃÃo de um sistema hÃdrico diante dos lanÃamentos de substÃncias
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41

Mezghani, Fadhil. "Modélisation multiphysique de structures nanométriques résonantes." Thesis, Troyes, 2016. http://www.theses.fr/2016TROY0026/document.

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La simulation multiphysique de l'interaction rayonnement-matière, des effets thermiques et mécaniques induits dans un matériau nanostructuré à un intérêt notamment lorsqu'il s'agit d'élaborer des capteurs voire de les optimiser. En effet, les effets thermiques peuvent être utilisés pour des applications chimiques ou biologiques et les dilatations mécaniques peuvent influer sur la durabilité du capteur et sur son efficacité. A l’échelle nanométrique, les longueurs caractéristiques des effets thermo-électro-magnétique-mécaniques ne sont pas du même ordre de grandeur et la simulation éléments fin
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42

Anantharaman, Arnaud. "Analyse mathématique de quelques modèles en calcul de structures électroniques et homogénéisation." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00558618.

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Cette thèse comporte deux volets distincts. Le premier, qui fait l'objet du chapitre 2, porte sur les modèles mathématiques en calcul de structures électroniques, et consiste plus particulièrement en l'étude des modèles de type Kohn-Sham avec fonctionnelles d'échange-corrélation LDA et GGA. Nous prouvons, pour un système moléculaire neutre ou chargé positivement, que le modèle Kohn-Sham LDA étendu admet un minimiseur, et que le modèle Kohn-Sham GGA pour un système contenant deux électrons admet un minimiseur. Le second volet de la thèse traite de problématiques diverses en homogénéisation. Dan
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43

Baddour, Nizar. "Etude instationnaire thermomecanique d'un lopin lors d'une operation de forgeage." Toulouse 3, 1988. http://www.theses.fr/1988TOU30176.

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Senot, Maxime. "Modèle géométrique de calcul : fractales et barrières de complexité." Phd thesis, Université d'Orléans, 2013. http://tel.archives-ouvertes.fr/tel-00870600.

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Les modèles géométriques de calcul permettent d'effectuer des calculs à l'aide de primitives géométriques. Parmi eux, le modèle des machines à signaux se distingue par sa simplicité, ainsi que par sa puissance à réaliser efficacement de nombreux calculs. Nous nous proposons ici d'illustrer et de démontrer cette aptitude, en particulier dans le cas de processus massivement parallèles. Nous montrons d'abord à travers l'étude de fractales que les machines à signaux sont capables d'une utilisation massive et parallèle de l'espace. Une méthode de programmation géométrique modulaire est ensuite prop
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Debroux, Noémie. "Mathematical modelling of image processing problems : theoretical studies and applications to joint registration and segmentation." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMIR02/document.

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Dans cette thèse, nous nous proposons d'étudier et de traiter conjointement plusieurs problèmes phares en traitement d'images incluant le recalage d'images qui vise à apparier deux images via une transformation, la segmentation d'images dont le but est de délimiter les contours des objets présents au sein d'une image, et la décomposition d'images intimement liée au débruitage, partitionnant une image en une version plus régulière de celle-ci et sa partie complémentaire oscillante appelée texture, par des approches variationnelles locales et non locales. Les relations étroites existant entre ce
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46

Scotti, Simone. "Applications of the error theory using Dirichlet forms." Phd thesis, Université Paris-Est, 2008. http://tel.archives-ouvertes.fr/tel-00349241.

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This thesis is devoted to the study of the applications of the error theory using Dirichlet forms. Our work is split into three parts. The first one deals with the models described by stochastic differential equations. After a short technical chapter, an innovative model for order books is proposed. We assume that the bid-ask spread is not an imperfection, but an intrinsic property of exchange markets instead. The uncertainty is carried by the Brownian motion guiding the asset. We find that spread evolutions can be evaluated using closed formulae and we estimate the impact of the underlying un
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Meftah, Khaled. "Mécanique des sols anisotropes : caractérisation de l'anisotropie des sols et prise en compte dans le calcul des ouvrages." Paris 6, 1988. http://www.theses.fr/1988PA066413.

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Ce rapport comprend quatre parties: la premiere partie consiste en une description detaillee de l'origine et des formes de l'anisotropie des sols; une place importante est accordee a la mise en evidence et la caracterisation de l'anisotropie de la cohesion non drainee des argiles; la seconde partie decrit les principes des modeles elastiques lineaires aelotropes et passe en revue les methodes de determination des parametres d'elasticite aelotrope et leurs valeurs disponibles dans la litterature, pour les sables et pour les argiles; dans la troisieme partie, apres une revue des solutions publie
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Rhayem, Taoufik. "Etude du confort vertical et longitudinal d'un vehicule ferroviaire : systeme deformable." Paris 6, 1986. http://www.theses.fr/1986PA066518.

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Presentation d'un modele mathematique permettant d'etudier le confort vertical et longitudinal d'un vehicule ferroviaire. L'etude du comportement de la voie a ete faite en la considerant comme une poutre deformable reposant sur des traverses longitudinales, de raideur et d'amortissement uniformement repartis
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49

Issa, Samar. "Méthodes variationnelles : Applications à l'analyse d'image et au modèle de Frenkel-Kontorova." Phd thesis, Université de La Rochelle, 2011. http://tel.archives-ouvertes.fr/tel-00808646.

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Cette thèse est décomposée en deux parties. La première est consacrée à l'étude de la restauration d'image et la seconde partie est consacrée à l'étude d'un modèle de Frenkel-Kontorova par des méthodes issues du calcul variationnel et des équations aux dérivées partielles. Au chapitre 1, nous présentons les questions essentielles que nous traiterons dans cette thèse, puis on fait des rappels sur les définitions et quelques propriétés d'espace des fonctions à variations bornées BV , l'espace d'Orlicz et le modèle de Frenkel-Kontorova. Au chapitre 2, nous montrons que les problèmes de minimisati
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50

Angoshtari, Bahman. "Stochastic modeling and methods for portfolio management in cointegrated markets." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:1ae9236c-4bf0-4d9b-a694-f08e1b8713c0.

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In this thesis we study the utility maximization problem for assets whose prices are cointegrated, which arises from the investment practice of convergence trading and its special forms, pairs trading and spread trading. The major theme in the first two chapters of the thesis, is to investigate the assumption of market-neutrality of the optimal convergence trading strategies, which is a ubiquitous assumption taken by practitioners and academics alike. This assumption lacks a theoretical justification and, to the best of our knowledge, the only relevant study is Liu and Timmermann (2013) which
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