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Dissertations / Theses on the topic 'Heat transfer theory'

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1

SAMUDRA, SAMEER D. "KINETIC THEORY APPROACH TO PLASMA HEAT TRANSFER." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin990028080.

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2

Vogl, Gregory William. "Comprehensive Theory of Heat Transfer in Heterogeneous Materials." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/30881.

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For over forty years, researchers have attempted to refine the Fourier heat equation to model heat transfer in engineering materials. The equation cannot accurately predict temperatures in some applications, such as during transients in microscale (< 10^-12 s) situations. However, even in situations where the time duration is relatively large, the Fourier heat equation might fail to predict observed non-Fourier behavior. Therefore, non-Fourier models must be created for certain engineering applications, in which accurate temperature modeling is necessary for design purposes. In this thesis
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3

Canhoto, Paulo. "Optimization of Heat Transfer Systems and Use of the Environmental Exergy Potential - Application to Compact Heat Exchangers and Heat Pumps." Doctoral thesis, IIFA - Instituto de Investigação e Formação Avançada, Universidade de Évora, 2012. http://hdl.handle.net/10174/7775.

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In this thesis, the optimization of forced convection heat sinks and groundwater-source heat pumps is addressed with the purpose of improving energy efficiency. Parallel ducts heat sinks are considered under constrained (fixed) pressure drop, pumping power and heat transfer rate. The intersection-of-asymptotes method is employed together with numerical simulations and relationships for determining optimum hydraulic diameter are put forward. An optimal design emerges under fixed heat transfer rate, which matches that found through the joint minimization of pressure drop and pumping power. With
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4

Shi, Yong. "Lattice Boltzmann models for microscale fluid flows and heat transfer /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?MECH%202006%20SHI.

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5

Lan, Chao-ho. "Radiative combined-mode heat transfer in a multi-dimensional participating medium using spectral methods /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004312.

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6

ZHANG, QIAN Mr. "KINETIC THEORY ANALYSIS OF HEAT TRANSFER TO A SPHERE FROM A STATIONARY IONIZED GAS." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1123793882.

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7

RAJAMANI, VIGNESH. "HEAT TRANSFER IN CONTINUUM AND NON-CONTINUUM PLASMA FLOWS IN MATERIALS PROCESSING APPLICATIONS." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1130076192.

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8

Liewkongsataporn, Wichit. "A numerical study of pulse-combustor jet impingement heat transfer." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22651.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.<br>Committee Co-Chair: Ahrens, Fred; Committee Co-Chair: Patterson, Tim; Committee Member: Aidun, Cyrus; Committee Member: Empie, Jeff; Committee Member: Frederick, Jim.
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9

Pratt, Brittan Sheldon. "An assessment of least squares finite element models with applications to problems in heat transfer and solid mechanics." Texas A&M University, 2008. http://hdl.handle.net/1969.1/85941.

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Research is performed to assess the viability of applying the least squares model to one-dimensional heat transfer and Euler-Bernoulli Beam Theory problems. Least squares models were developed for both the full and mixed forms of the governing one-dimensional heat transfer equation along weak form Galerkin models. Both least squares and weak form Galerkin models were developed for the first order and second order versions of the Euler-Bernoulli beams. Several numerical examples were presented for the heat transfer and Euler- Bernoulli beam theory. The examples for heat transfer included: a dif
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10

Olakoyejo, O. T. (Olabode Thomas). "Geometric optimisation of conjugate heat transfer in cooling channels with different cross-sectional shapes." Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/25484.

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In modern heat transfer, shape and geometric optimisation are new considerations in the evaluation of thermal performance. In this research, we employed constructal theory and design to present three-dimensional theoretical and numerical solutions of conjugate forced convection heat transfer in heat generating devices with cooling channels of different cross-sectional shapes. In recent times, geometric configurations of cooling channel have been found to play an important role in thermal performance. Therefore, an efficient ways of optimally designing these cooling channels shapes is required.
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11

Chaleff, Ethan S. "The Radiative Heat Transfer Properties of Molten Salts and Their Relevance to the Design of Advanced Reactors." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1480539289737113.

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12

Van, Cong Tuan Son. "Numerical solutions to some inverse problems." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/38248.

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Doctor of Philosophy<br>Department of Mathematics<br>Alexander G. Ramm<br>In this dissertation, the author presents two independent researches on inverse problems: (1) creating materials in which heat propagates a long a line and (2) 3D inverse scattering problem with non-over-determined data. The theories of these methods were developed by Professor Alexander Ramm and are presented in Chapters 1 and 3. The algorithms and numerical results are taken from the papers of Professor Alexander Ramm and the author and are presented in Chapters 2 and 4.
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13

Metri, Prashant G. "Mathematical Analysis of Forced Convective Flow Due to Stretching Sheet and Instabilities of Natural Convective Flow." Doctoral thesis, Mälardalens högskola, Utbildningsvetenskap och Matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-35222.

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The investigations presented in the thesis are theoretical studies of magnetohydrodynamic flows, heat and mass transfer in Newtonian/non-Newtonian cooling liquids, due to horizontal/vertical stretching sheet. The theoretical studies include the effect of magnetic field, uniform and non-uniform heat source/sink (flow and temperature dependent heat source/sink) effects. The considered problems include flow of viscous fluids in the presence of applied magnetic field and electric field with first order chemical reactions. The viscous incompressible Newtonian fluid flow in porous medium with Darcy-
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14

Bhopte, Siddharth. "Study of transport processes from macroscale to microscale." Diss., Online access via UMI:, 2009.

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Thesis (Ph. D.)--State University of New York at Binghamton, Thomas J. Watson School of Engineeering and Applied Science, Department of Mechanical Engineering, 2009.<br>Includes bibliographical references.
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15

Clark, Peter G. "Multi-scale modelling describing thermal behaviour of polymeric materials. Scalable lattice-Boltzmann models based upon the theory of Grmela towards refined thermal performance prediction of polymeric materials at micro and nano scales." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5768.

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Micrometer injection moulding is a type of moulding in which moulds have geometrical design features on a micrometer scale that must be transferred to the geometry of the produced part. The difficulties encountered due to very high shear and rapid heat transfer of these systems has motivated this investigation into the fundamental mathematics behind polymer heat transfer and associated processes. The aim is to derive models for polymer dynamics, especially heat dynamics, that are considerably less approximate than the ones used at present, and to translate this into simulation and optim
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16

Clark, Peter Graham. "Multi-scale modelling describing thermal behaviour of polymeric materials : scalable lattice-Boltzmann models based upon the theory of Grmela towards refined thermal performance prediction of polymeric materials at micro and nano scales." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5768.

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Micrometer injection moulding is a type of moulding in which moulds have geometrical design features on a micrometer scale that must be transferred to the geometry of the produced part. The difficulties encountered due to very high shear and rapid heat transfer of these systems has motivated this investigation into the fundamental mathematics behind polymer heat transfer and associated processes. The aim is to derive models for polymer dynamics, especially heat dynamics, that are considerably less approximate than the ones used at present, and to translate this into simulation and optimisation
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17

Craft, Kathleen L. "Boundary layer models of hydrothermal circulation on Earth and Mars." Thesis, Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26574.

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Continental and submarine hydrothermal systems are commonly found around the world. Similar systems that sustain water or other fluids are also likely to exist in planetary bodies throughout the solar system. Also, terrestrial submarine systems have been suggested as the locations of the first life on Earth and may, therefore, provide indications of where to find life on other planetary bodies. The study of these systems is vital to the understanding of planetary heat transfer, chemical cycling, and biological processes; hence hydrothermal processes play a fundamental role in planetary evol
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18

Marck, Gilles. "Optimisation topologique des transferts de chaleur et de masse : application aux échangeurs de chaleur." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00794779.

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Les transferts de chaleur et de masse sont deux phénomènes physiques à la base de nombreux systèmes thermiques employés dans des secteurs variés tels que l'industrie, le bâtiment ou encore les énergies renouvelables. Les présents travaux de recherche envisagent différentes méthodologies d'optimisation de configurations assurant le transfert de flux de chaleur, couplé ou non à un écoulement fluide, au sens topologique du terme. Les équations aux dérivées partielles décrivant les phénomènes physiques sont discrétisées avec la méthode des volumes finis. La première partie du manuscrit examine suc
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19

Oberman, Glen James. "Mathematical modelling of the drying of sol gel microspheres." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/49386/1/Glen_Oberman_Thesis.pdf.

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This thesis presents a mathematical model of the evaporation of colloidal sol droplets suspended within an atmosphere consisting of water vapour and air. The main purpose of this work is to investigate the causes of the morphologies arising within the powder collected from a spray dryer into which the precursor sol for Synroc™ is sprayed. The morphology is of significant importance for the application to storage of High Level Liquid Nuclear Waste. We begin by developing a model describing the evaporation of pure liquid droplets in order to establish a framework. This model is developed through
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20

Nowakowski, Krzysztof A. "Laser beam interaction with materials for microscale applications." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-121205-135626/.

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Dissertation (Ph.D.)--Worcester Polytechnic Institute.<br>Keywords: laser beam characteristics; heat transfer; hole profile; MEMS; hole formation; laser micromachining; laser microdrilling; plasma effects; silicon; 304 stainless steel; Fourier theory; lattice-phonon vibration. Includes bibliographical references. (p.379-390)
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21

Gonçalves, Breno Lucas da Costa. "An introduction to distribution theory, Fourier transform, Sobolev spaces and its applications to the Black-Scholes Equation." Master's thesis, Instituto Superior de Economia e Gestão, 2019. http://hdl.handle.net/10400.5/19247.

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Mestrado em Mathematical Finance<br>A maior parte da teoria citada em cursos introdutórios de análise matemática e cálculo foi elaborada ainda antes do século XVIII. No entanto, em meados de 1950, Laurent Schwartz desenvolveu um novo conceito que mudou e redefiniu a noção de função. A definição de derivada e transformada de Fourier são dois dos conceitos mais importantes em análise e essenciais para o estudo de equações diferenciais parciais. No entanto, note-se que nem todas as funções são diferenciáveis ou possuem uma transformada de Fourier. A teoria de distribuições permite esta correção
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22

Bourgeois, Thierry. "Couplage du logiciel Phoenics et de la méthode de zones en vue de la modélisation du transfert de chaleur dans des fournaises industrielles /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1988. http://theses.uqac.ca.

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23

Scheid, Jean-François. "Étude théorique et numérique de l'évolution morphologique d'interfaces." Paris 11, 1994. http://www.theses.fr/1994PA112027.

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L'objet de cette thèse est d'étudier un processus de dissolution-croissance où une phase solide est en contact avec une phase liquide. Ce phénomène s'accompagne d'un changement de géométrie de l'interface entre ces deux phases. Les lois physiques qui gouvernent ce processus conduisent mathématiquement à une loi de déplacement pour l'interface où la courbure moyenne apparait de façon non linéaire et à une équation parabolique pour la concentration de l'espèce chimique passée en solution. Il s'agit d'un problème de Stefan avec tension superficielle en dimension deux d'espace. Au chapitre 1, nous
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24

Mogaji, Emmanuel. "Emotional appeals in UK banks' print advertisement." Thesis, University of Bedfordshire, 2016. http://hdl.handle.net/10547/622103.

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The unprecedented turbulence and uncertainty experienced in global economic and financial markets because of the 'credit crunch' has had a damaging impact on consumer confidence. Trust and credibility have been eroded as many customers feel let down by the banks suggesting the need for banks to rebuild constructive dialogue and long-term, meaningful relationships with their customers again. Though financial service, in this case, is considered a utilitarian service, based on the fact that money is needed to support people‘s daily activities, the present state of financial service has suggested
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25

Weng, Chih-Jung, and 翁志榮. "Heat Transfer Phenomenon of General Non-Fourier Conduction Theory." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/88607321215356060629.

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26

Balasubramanian, Holly Ann. "Heat-mass-momentum transfer in hollow fiber spinning." Thesis, 2004. http://hdl.handle.net/2152/1477.

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27

Balasubramanian, Holly Ann Lloyd Douglas R. "Heat-mass-momentum transfer in hollow fiber spinning." 2004. http://repositories.lib.utexas.edu/bitstream/handle/2152/1477/balasubramanianh94421.pdf.

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28

Berg, Sean Michael. "Constructal trees : micro-fabrication techniques and experimental methodology." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2515.

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This report discusses the use of micro-fabrication techniques for creating experimental test sections containing trees of micro-finned conducting pathways, also referred to as constructal trees, for cooling a heat generating substrate. These trees are made of copper and contain branches that bifurcate at 90° angles to form constructal patterns. The patterns for the finalized test sections were created using photolithography techniques, and copper was deposited via thermal evaporation onto a 1 cm² substrate to create the trees. Certain test section design parameters were varied including the ge
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29

Yang, Po Chuan, and 楊博全. "Application of the Thermal Wave Theory to Analyze Non-linear Bio-heat Transfer Problems." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/48124089905253247971.

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碩士<br>國立成功大學<br>機械工程學系<br>89<br>With the recent of advance in the biomedical engineering, the research of the bio-heat transfer for human body is increasingly from qualitative analysis to quantitative analysis. Therefore people have to know thoroughly the characteristic and theory of heat transfer for human body. The classical Fourier heat flux model assumes the infinite propagation velocity of thermal wave, which is definitely permitted for the majority of thermal problems. However, the Fourier law breaks down when the heat conduction process in living tissues involves low temperature. Under
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30

Lai, Yushiuan, and 賴昱暄. "Transient Heat Transfer Phenomenon of a Two-Dimensional Anisotropic Medium Using Thermal Wave Theory." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/04778188603194060019.

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碩士<br>國立交通大學<br>機械工程系<br>89<br>In classical Fourier heat conduction theory, heat flux is postulated to be directly proportional to temperature gradient. That implies an infinite speed of propagation of the thermal wave, indicting that a local change in temperature cause an instantaneous perturbation in the temperature at each point in the medium, even if the intervening distances are infinitely large. Although an infinite speed of heat propagation is nonphysical, for most engineering applications, this approximation is quite acceptable. However, in situations dealings with very low temperature
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31

"Heat transfer and intermittency in Advection =: 平流中熱傳送及間歇性問題". 1999. http://library.cuhk.edu.hk/record=b5890001.

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Lo Ka Fai<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1999.<br>Includes bibliographical references (leaves [67]-68).<br>Text in English; abstracts in English and Chinese.<br>Lo Ka Fai<br>Abstract --- p.ii<br>Acknowledgements --- p.iii<br>List of Figures --- p.v<br>List of Tables --- p.ix<br>Chapter 1 --- Introduction --- p.1<br>Chapter 2 --- The First Problem: Heat Transfer and Large-scale Flow --- p.7<br>Chapter 2.1 --- Circulating flow --- p.8<br>Chapter 2.2 --- Shear flow --- p.10<br>Chapter 3 --- Results and Discussions --- p.13<br>Chapter 3.1 --- Circulating flow --- p
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32

Cruz-Fierro, Carlos Francisco. "Coupled momentum and heat transport in laminar axisymmetric pipe flow of ferrofluids in non-uniform magnetic fields : theory and simulation." Thesis, 2003. http://hdl.handle.net/1957/31656.

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The effect of a non-uniform magnetic field on the coupled transport of momentum and heat is studied for the case of laminar pipe flow of a magnetically susceptible ferrofluid. The momentum and heat transport equations are complemented with the necessary electromagnetic terms and used to develop a computer simulation of the velocity profile and temperature distribution in the fluid. Two magnetic field configurations are studied. The first configuration is produced by a single short solenoid, located around the pipe. The magnetic field produced has both radial and axial components. For the secon
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33

Pathrikar, Anil. "Nonlocal continuum models for plasticity and damage." Thesis, 2021. https://etd.iisc.ac.in/handle/2005/5719.

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Nonlocal interactions of material points play a vital role in modelling certain important aspects of inelastic phenomena such as plasticity and damage in solids. For plasticity problems, nonlocal interactions allow characterizations of size-dependence and energetic hardening. In the case of damage, nonlocality describes energetically favourable conditions for propagation as well as branching of cracks. The nonlocal description of inelastic phenomenon introduces certain internal length scales representative of the material micro-structure. A geometric perspective of the kinematics of inelastic
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34

Zhen, Yurong. "Plasmonic properties and applications of metallic nanostructures." Thesis, 2013. http://hdl.handle.net/1911/72071.

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Plasmonic properties and the related novel applications are studied on various types of metallic nano-structures in one, two, or three dimensions. For 1D nanostructure, the motion of free electrons in a metal-film with nanoscale thickness is confined in its normal dimension and free in the other two. Describing the free-electron motion at metal-dielectric surfaces, surface plasmon polariton (SPP) is an elementary excitation of such motions and is well known. When further perforated with periodic array of holes, periodicity will introduce degeneracy, incur energy-level splitting, and facilitate
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35

Agnelli, Juan Pablo. "Estimación de parámetros y clasificación de datos : aplicaciones biomédicas." Doctoral thesis, 2011. http://hdl.handle.net/11086/158.

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Tesis (Doctor en Matemática)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2011.<br>En esta tesis se proponen principalmente dos tipos de aplicaciones biomédicas para las cuales hemos empleado diferentes herramientas matemáticas y por lo cual el trabajo está dividido en dos partes. En la primera parte nos hemos abocado a la detección de tumores. El objetivo aquí fue estimar la localización, tamaño y parámetros térmicos asociados a un tumor utilizando como información perfiles de temperaturas medidos sobre la superficie corporal. En la segunda parte del trabajo
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