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Gotowe bibliografie tematyczne / Continuous or discrete homogenization / Rozprawy doktorskie

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Rozprawy doktorskie na temat „Continuous or discrete homogenization”

Autor: Grafiati

Data publikacji: 8 czerwca 2024

Data aktualizacji: 31 lipca 2025

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1

Rizzi, Gianluca. "Strain-gradient effects in the discrete/continuum transition via homogenization." Doctoral thesis, Università degli studi di Trento, 2019. https://hdl.handle.net/11572/369095.

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A second-gradient elastic material has been identified as the equivalent homogeneous material of an hexagonal lattice made up of three different orders of linear elastic bars (hinged at each junction). In particular, the material equivalent to the lattice exhibits: (i.) non-locality, (ii.) non-centrosymmetry, and (iii.) anisotropy (even if the hexagonal geometry leads to isotropy at first-order). A Cauchy elastic equivalent solid is only recovered in the limit of vanishing length of the latticeâ€™s bars. The identification of the second-gradient elastic material is complemented by analyses of

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Rizzi, Gianluca. "Strain-gradient effects in the discrete/continuum transition via homogenization." Doctoral thesis, University of Trento, 2019. http://eprints-phd.biblio.unitn.it/3552/1/Rizzi_Gianluca_PhD_thesis.pdf.

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A second-gradient elastic material has been identified as the equivalent homogeneous material of an hexagonal lattice made up of three different orders of linear elastic bars (hinged at each junction). In particular, the material equivalent to the lattice exhibits: (i.) non-locality, (ii.) non-centrosymmetry, and (iii.) anisotropy (even if the hexagonal geometry leads to isotropy at first-order). A Cauchy elastic equivalent solid is only recovered in the limit of vanishing length of the lattice’s bars. The identification of the second-gradient elastic material is complemented by analyses of po

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3

Lauerbach, Laura [Verfasser], Anja [Gutachter] Schlömerkemper, and Martin [Gutachter] Kruzik. "Stochastic Homogenization in the Passage from Discrete to Continuous Systems - Fracture in Composite Materials / Laura Lauerbach ; Gutachter: Anja Schlömerkemper, Martin Kruzik." Würzburg : Universität Würzburg, 2020. http://d-nb.info/1220634239/34.

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Ruf, Matthias [Verfasser], Marco [Akademischer Betreuer] [Gutachter] Cicalese, Antoine [Gutachter] Gloria, and Andrea [Gutachter] Braides. "Discrete-to-continuum limits and stochastic homogenization of ferromagnetic surface energies / Matthias Ruf ; Gutachter: Antoine Gloria, Marco Cicalese, Andrea Braides ; Betreuer: Marco Cicalese." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1137323493/34.

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5

Alavi, Seyed Ehsan. "Homogénéisation de milieux architecturés périodiques et quasi-périodiques vers des milieux continus généralisés." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0305.

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Cette thèse vise à revisiter les schémas d'homogénéisation d'ordre supérieur vers des continuums d'ordre ou de gradient supérieurs, successivement pour les matériaux et composites architecturés périodiques et quasi-périodiques, en se basant sur des principes variationnels et une extension de la condition de macrohomogénéité de Hill. Les méthodes d'homogénéisation continue sont exposées dans la première partie pour les milieux micropolaires et micromorphes, suivies par une présentation de l’homogénéisation discrète, alternative de l’homogénéisation continue.Nous avons étendu ces développements

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6

Baird, Graham. "Mixed discrete-continuous fragmentation equations." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:311da0da-6801-4120-9129-d95786a153b6.

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The work contained in this thesis concerns the development, and the mathematical and numerical analysis, of a new class of hybrid discrete-continuous fragmentation model. The framework is introduced as a potential answer to the occurrence of 'shattering' mass loss, commonly observed in purely continuous fragmentation models. Initially, the study begins by introducing the model, which takes the form of an integro-differential equation, coupled with a system of ordinary differential equations. Once the model has been established, it is subjected to a rigorous mathematical analysis, using the the

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7

Ye, Yang. "Gradient effects in discrete elastic networks captured by asymptotic homogenization." Electronic Thesis or Diss., Institut polytechnique de Paris, 2025. http://www.theses.fr/2025IPPAX033.

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Les structures architecturées gagnent en popularité dans un large éventail d'applications en ingénierie en raison de leurs propriétés mécaniques exotiques, telles que leur légèreté, leur grande résistance, leur capacité de transmission des ondes et leurs caractéristiques d'absorption des chocs. Leur comportement mécanique unique peut être finement ajusté en modifiant leur topologie. Les récents progrès de la fabrication additive ont rendu possible la production de structures architecturées à base de treillis avec des microstructures précisément conçues et personnalisables. Une approche directe

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Silva, Pedro André Arroyo. "Modelo matemático com parâmetros que dependem da discretização: aplicação ao estudo de fenômenos de propagação discreta em meios excitáveis." Universidade Federal de Juiz de Fora (UFJF), 2018. https://repositorio.ufjf.br/jspui/handle/ufjf/7194.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2018-07-26T12:29:23Z No. of bitstreams: 1 pedroandrearroyosilva.pdf: 4154699 bytes, checksum: 1875b7d54dd015591fcdd55db287ee37 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-09-03T16:20:02Z (GMT) No. of bitstreams: 1 pedroandrearroyosilva.pdf: 4154699 bytes, checksum: 1875b7d54dd015591fcdd55db287ee37 (MD5)<br>Made available in DSpace on 2018-09-03T16:20:02Z (GMT). No. of bitstreams: 1 pedroandrearroyosilva.pdf: 4154699 bytes, checksum: 1875b7d54dd015591fcdd55db287ee37 (MD5) Previous issu

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9

ElNady, Khaled. "Modèles de comportement non linéaire des matériaux architecturés par des méthodes d'homogénéisation discrètes en grandes déformations. Application à des biomembranes et des textiles." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0032/document.

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Ce travail porte sur le développement de modèles micromécaniques pour le calcul de la réponse homogénéisée de matériaux architecturés, en particulier des matériaux se présentant sous forme de treillis répétitifs. Les matériaux architecturés et micro-architecturés couvrent un domaine très large de de propriétés mécaniques, selon la connectivité nodale, la disposition géométrique des éléments structuraux, leurs propriétés mécaniques, et l'existence d'une possible hiérarchie structurale. L'objectif principal de la thèse est la prise en compte des nonlinéarités géométriques résultant des évolution

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10

Schlömerkemper, Anja. "Magnetic forces in discrete and continuous systems." Doctoral thesis, Universitätsbibliothek Leipzig, 2004. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-37349.

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The topic of this thesis is a mathematically rigorous derivation of formulae for the magnetic force which is exerted on a part of a bounded magnetized body by its surrounding. Firstly, the magnetic force is considered within a continuous system based on macroscopic magnetostatics. The force formula in this setting is called Brown's force formula referring to W. F. Brown, who gave a mainly physically motivated discussion of it. This formula contains a surface integral which shows a nonlinear dependence on the normal. Brown assumes the existence of an additional term in the surface force which c

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11

Kimia, Behjoo. "Deblurring Gaussian blur : continuous and discrete approaches." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65339.

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12

Lee, Wai Ha. "Continuous and discrete properties of stochastic processes." Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/11194/.

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This thesis considers the interplay between the continuous and discrete properties of random stochastic processes. It is shown that the special cases of the one-sided Lévy-stable distributions can be connected to the class of discrete-stable distributions through a doubly-stochastic Poisson transform. This facilitates the creation of a one-sided stable process for which the N-fold statistics can be factorised explicitly. The evolution of the probability density functions is found through a Fokker-Planck style equation which is of the integro-differential type and contains non-local effects whi

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13

Sherman, Benjamin (Benjamin Marc). "Making discrete decisions based on continuous values." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112004.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 99-102).<br>Many safety-critical software systems are cyber-physical systems that compute with continuous values; confirming their safety requires guaranteeing the accuracy of their computations. It is impossible for these syst

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14

Janiszewski, Szymon Pawel. "Optimization problems in discrete and continuous time." Thesis, University of Hull, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396087.

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15

Zhu, Qingxin Carleton University Dissertation Computer Science. "Optimal search in discrete and continuous spaces." Ottawa, 1996.

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16

Houben, Dirk. "Return Smoothing in Discrete and Continuous Time." Thesis, The University of Sydney, 2020. https://hdl.handle.net/2123/24564.

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In this thesis we propose four novel continuous-time return smoothing models. Borrowing from the private commercial real estate literature, we start with a benchmark model for return smoothing in discrete time. The benchmark model is translated into continuous time, taking us from an autoregressive moving average (ARMA) specification for the smoothed holding period return to an Ornstein-Uhlenbeck (OU) specification for the instantaneous continuously compounding rate of return on the smoothed asset price. The model is then extended to allow for the possibility of predictability in the und

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17

Westhead, Martin D. "Continuous automata : bridging the gap between discrete and continuous time system models." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/27642.

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The principal use of models in design and maintenance of a system is fundamental to the engineering methodology. As the complexity and sophistication of systems increase so do the demands on the system models required to design them. In particular, the design of <I>agent</I> systems situated in the real world, such as robots, will require design models capable of expressing discrete and continuous changes of system parameters. Such systems are referred to as <I>mode-switching,</I> or <I>hybrid</I> systems. This thesis investigates ways in which time is represented in automata system models wit

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18

Liao, Tianjun. "Population-based heuristic algorithms for continuous and mixed discrete-continuous optimization problems." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209439.

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Continuous optimization problems are optimization problems where all variables<p>have a domain that typically is a subset of the real numbers; mixed discrete-continuous<p>optimization problems have additionally other types of variables, so<p>that some variables are continuous and others are on an ordinal or categorical<p>scale. Continuous and mixed discrete-continuous problems have a wide range<p>of applications in disciplines such as computer science, mechanical or electrical<p>engineering, economics and bioinformatics. These problems are also often hard to<p>solve due to their inherent diffi

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19

Maza, Sabido Susanna. "Discrete and continuous symetries in planar vector fields." Doctoral thesis, Universitat de Lleida, 2008. http://hdl.handle.net/10803/81314.

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Aquesta tesi es situa en el marc de la teoriaqualitativadelssistemesd’equacionsdiferencials en el pla. Cada capítol conté un aspectediferent, però en totsells es tractenproblemes, la soluciódelsqualsestà basada en el rol que hi juguen les simetriesdiscretes i continues (reversibilitat o simetries de Lie) de campsvectorialsplans. A la introducció, es dóna un resumdelsresultatsmésconeguts i s’hiintrodueix la notació que es fa servir al llarg de la tesi. En el segon i tercer capítol, s’aborda el problema de trobarl’expressió explícita del canvilinealitzant o orbitalmentlinealitzantd#un camp v

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Maza, Sabido Susana. "Discrete and continuous symetries in planar vector fields." Doctoral thesis, Universitat de Lleida, 2008. http://hdl.handle.net/10803/81314.

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Aquesta tesi es situa en el marc de la teoriaqualitativadelssistemesd’equacionsdiferencials en el pla. Cada capítol conté un aspectediferent, però en totsells es tractenproblemes, la soluciódelsqualsestà basada en el rol que hi juguen les simetriesdiscretes i continues (reversibilitat o simetries de Lie) de campsvectorialsplans. A la introducció, es dóna un resumdelsresultatsmésconeguts i s’hiintrodueix la notació que es fa servir al llarg de la tesi. En el segon i tercer capítol, s’aborda el problema de trobarl’expressió explícita del canvilinealitzant o orbitalmentlinealitzantd#un camp ve

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21

Dasci, Abdullah. "Discrete and continuous models for production-distribution systems." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37625.

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This thesis presents a series of integrated models for simultaneous optimization of location, capacity, product range, and production technology decisions in production-distribution systems. The interactions between these decisions can be significant. This thesis draws its motivation from these interactions. In order to benefit from the capital and/or employment subsidies, preferential tax rates, and free trade zones provided by governments, firms need to take the interdependencies between their location, capacity and technology decisions into account. These decisions could be further complica

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22

Smith, Jason Marko. "Discrete properties of continuous, non-Gaussian random processes." Thesis, University of Nottingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438330.

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Webster, Helen Nicola. "On the continuous and discrete third Painleve equations." Thesis, University of Kent, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267390.

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Parra, Rojas César. "Intrinsic fluctuations in discrete and continuous time models." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/intrinsic-fluctuations-in-discrete-and-continuous-time-models(d7006a2b-1496-44f2-8423-1f2fa72be1a5).html.

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This thesis explores the stochastic features of models of ecological systems in discrete and in continuous time. Our interest lies in models formulated at the microscale, from which a mesoscopic description can be derived. The stochasticity present in the models, constructed in this way, is intrinsic to the systems under consideration and stems from their finite size. We start by exploring a susceptible-infectious-recovered model for epidemic spread on a network. We are interested in the case where the connectivity, or degree, of the individuals is characterised by a very broad, or heterogeneo

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Vanel, Alice. "Asymptotic analysis of discrete and continuous periodic media." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/64911.

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Mechanical mass-spring networks have long acted to motivate, and gain qualitative intuition, in solid-state physics, continuous media containing periodic arrays of inclu- sions such as phononic crystals, and more recently in metamaterials. While in some cases an exact or approximate analogy between the continuous model and its discrete representation can be systematically drawn, more often such analogies are introduced heuristically to aid interpretation with the lumped parameters estimated and accepted as qualitative. This thesis builds towards making the analogy exact; we first look at the d

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26

Schimmer, Lukas Wolfgang. "Spectral inequalities for discrete and continuous differential operators." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/29337.

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In this thesis spectral inequalities and trace formulae for discrete and continuous differential operators are discussed. We first investigate spectral inequalities for Jacobi operators with matrix-valued potentials and present a new, direct proof of a sharp inequality corresponding to a Lieb-Thirring inequality for the power 3/2 using the commutation method. For the special case of a discrete Schrödinger operator we also prove new inequalities for higher powers of the eigenvalues and the potential and compare our results to previously established bounds. We then approximate a Schrödinger op

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27

Kim, Sunha. "A Comparison of Discrete and Continuous Survival Analysis." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/47933.

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There has been confusion in choosing a proper survival model between two popular survival models of discrete and continuous survival analysis. This study aimed to provide empirical outcomes of two survival models in educational contexts and suggest a guideline for researchers who should adopt a suitable survival model. For the model specification, the study paid attention to three factors of time metrics, censoring proportions, and sample sizes. To arrive at comprehensive understanding of the three factors, the study investigated the separate and combined effect of these factors. Furthermore

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Kilian, Stephanie L. "Coordination of Continuous and Discrete Components of Action." Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1403047071.

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Desmarais, Bruce A. Carsey Thomas M. "Discrete measurement, continuous time and event history modeling." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,1900.

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Thesis (M.A.)--University of North Carolina at Chapel Hill, 2008.<br>Title from electronic title page (viewed Dec. 11, 2008). "... in partial fulfillment of the requirements for the degree of Master of Political Science in the Department of Political Science." Discipline: Political Science; Department/School: Political Science.

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Mayeli, Azita. "Discrete and continuous wavelet transformations on the Heisenberg group." [S.l.] : [s.n.], 2006. http://mediatum2.ub.tum.de/doc/602044/document.pdf.

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Barton, Paul Inigo. "The modelling and simulation of combined discrete/continuous processes." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8478.

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Perrin, Nicolas. "Footstep planning for humanoid robots: discrete and continuous approaches." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2011. http://tel.archives-ouvertes.fr/tel-00647469.

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Dans cette thèse nous nous intéressons à deux types d'approches pour la planification de pas pour robots humanoïdes : d'une part les approches discrètes où le robot n'a qu'un nombre fini de pas possibles, et d'autre part les approches où le robot se base sur des zones de faisabilité continues. Nous étudions ces problèmes à la fois du point de vue théorique et pratique. En particulier nous décrivons deux méthodes originales, cohérentes et efficaces pour la planification de pas, l'une dans le cas discret (chapitre 5) et l'autre dans le cas continu (chapitre 6). Nous validons ces méthodes en simu

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33

Koshkouei, Ali Jafari. "Continuous and discrete-time sliding mode control design techniques." Thesis, University of Sheffield, 1997. http://etheses.whiterose.ac.uk/15037/.

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Sliding mode control is a well-known approach to the problem of the control of uncertain systems, since it is invariant to a class of parameter variations. Well-established investigations have shown that the sliding mode controller/ observer is a good approach from the point of view of robustness, implementation, numerical stability, applicability, ease of design tuning and overall evaluation. In the sliding mode control approach, the controller and/ or observer is designed so that the state trajectory converges to a surface named the sliding surface. It is desired to design the sliding surfac

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34

Poufinas, Thomas. "Discrete-Time and Continuous-Time Option Pricing with Fees /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487934589977028.

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Rasolonjanahary, Manan'Iarivo. "Scaling of morphogenetic patterns in continuous and discrete models." Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/17293/.

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In biological systems, individuals which belong to the same species can have different sizes. However, the ratios between the different parts of their bodies remain the same for individuals of different sizes. For example, for fully developed organism with segmented structure (i.e. insects), the number of segment across the size range of the individuals does not change. This morphological scaling plays a major role in the development of the organism and it has been the object of biological studies (Cooke 1981, Day and Lawrence 2000, Parker 2011) and mathematical modelling (Othmer and Pate 1980

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Ingerman, David V. "Discrete and continuous inverse boundary problems on a disc /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/5756.

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Rivera, G. Angel J. "Reasoning about co-evolving discrete, continuous and hybrid states." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2008. http://wwwlib.umi.com/cr/syr/main.

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Sivaramakrishnan, Kamakshi. "Universal schemes for denoising discrete-time continuous-amplitude signals /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Liu, Qing. "Elliptic Asymptotic Behaviours of Continuous and Discrete Painlevé Equations." Thesis, The University of Sydney, 2018. http://hdl.handle.net/2123/18883.

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This thesis investigates the asymptotic behaviours of both continuous and discrete Painlevé equations as their independent variables approach complex infinity. We focus on the third to the fifth Painlevé equations and three discrete Painlevé equations referred to as d-PI, q-PI and q-PIII in the literature. In each case, the generic asymptotic behaviours are found to be given by elliptic functions. We deduce the properties of the respective elliptic functions in terms of energy-like parameters which are Hamiltonians and invariants of the corresponding autonomous continuous and discrete Painlevé

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40

Nutaro, James Joseph. "Parallel discrete event simulation with application to continuous systems." Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/280490.

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Recent advances in discrete event modeling of continuous systems have emphasized the need for high performance simulation engines. This need is particularly acute when discrete event methods are applied to the numerical solution of partial differential equations. Accurate approximations can require thousands, or even millions, of cells. The corresponding requirements for memory and computing power can readily exceed what is available on a single processor computer. Discrete event simulations are characterized by asynchronous and irregular, random, or data dependent behavior. This makes paralle

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41

Hu, Siyi S. M. Massachusetts Institute of Technology. "Discrete-continuous optimization for robot perception via semidefinite relaxation." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122515.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 85-90).<br>In this thesis, we propose polynomial-time algorithms based on semidefinite programming (SDP) relaxation to find approximate solutions to nonconvex problems arising in two fields of robot perception, semantic segmentation and robust pose graph optimization. Compared with other inference techniques, SDP relaxation have shown to provide accurate estimate with provable sub-optimality guarantees witho

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42

Goda, Ibrahim. "Micromechanical models of network materials presenting internal length scales : applications to trabecular bone under stable and evolutive conditions." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0055/document.

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Des méthodes micromécaniques spécifiques ont été développées pour la détermination du comportement effectif de matériaux cellulaires dotés d’une architecture discrète à l’échelle microscopique. La méthode d’homogénéisation discrète a été appliquée à des structures tissées monocouches ainsi qu’à l’os trabéculaire. La topologie discrète initiale de ces milieux est remplacée à l’échelle mésoscopique par un milieu effectif anisotrope micropolaire, qui rend compte des effets d’échelles observés. Ces méthodes d’homogénéisation permettent d’accéder à des propriétés classiques et non classiques dont l

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Xu, Kun. "Static hedging of barrier options in discrete and continuous time." Thesis, Uppsala University, Department of Mathematics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-120232.

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Dimtriadish, Veniamin. "Modelling, safety verification and design of discrete/continuous processing systems." Thesis, Imperial College London, 1997. http://hdl.handle.net/10044/1/7263.

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Kristensson, Per Ola. "Discrete and Continuous Shape Writing for Text Entry and Control." Doctoral thesis, Linköping : Department of Computer and Information Science, Linköping University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8877.

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Chaves, Madalena. "Predictive analysis of dynamical systems: combining discrete and continuous formalisms." Habilitation à diriger des recherches, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00908927.

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The mathematical analysis of dynamical systems covers a wide range of challenging problems related to the time evolution, transient and asymptotic behavior, or regulation and control of physical systems. A large part of my work has been motivated by new mathematical questions arising from biological systems, especially signaling and genetic regulatory networks, where the classical methods usually don't directly apply. Problems include parameter estimation, robustness of the system, model reduction, or model assembly from smaller modules, or control of a system towards a desired state. Although

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Ouaknine, Joel. "Discrete analysis of continuous behaviour in real-time concurrent systems." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365293.

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Perreira, Das Chagas Thiago. "Stabilization of periodic orbits in discrete and continuous-time systems." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00852424.

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The main problem evaluated in this manuscript is the stabilization of periodic orbits of non-linear dynamical systems by use of feedback control. The goal of the control methods proposed in this work is to achieve a stable periodic oscillation. These control methods are applied to systems that present unstable periodic orbits in the state space, and the latter are the orbits to be stabilized.The methods proposed here are such that the resulting stable oscillation is obtained with low control effort, and the control signal is designed to converge to zero when the trajectory tends to the stabili

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Ypma, J. Y. "Dynamic models of continuous and discrete outcomes : methods and applications." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1386923/.

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This thesis contains three chapters on dynamic models with discrete and continuous outcomes. In the rest chapter, I focus on indirect inference estimation. Indirect inference is used to estimate parameters in models where evaluation of the objective function directly is complicated or infeasible. Indirect inference is typically formulated as an optimization problem nesting one or more other optimization problems. In some cases the solution to the inner optimization problems can be obtained in one step, but when such a solution is not available, indirect inference estimation is computationally

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Rao, V. A. P. "Markov chain Monte Carlo for continuous-time discrete-state systems." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1349490/.

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A variety of phenomena are best described using dynamical models which operate on a discrete state space and in continuous time. Examples include Markov (and semi-Markov) jump processes, continuous-time Bayesian networks, renewal processes and other point processes. These continuous-time, discrete-state models are ideal building blocks for Bayesian models in fields such as systems biology, genetics, chemistry, computing networks, human-computer interactions etc. However, a challenge towards their more widespread use is the computational burden of posterior inference; this typically involves ap

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