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Dissertations / Theses on the topic 'Anderson thermodynamic model (AT)'

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Published: 2 June 2025

Last updated: 31 July 2025

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1

Júnior, Vivaldo Leiria Campo. "O grupo de renormalização numérico e o problema de duas impurezas." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-09042008-103624/.

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Neste trabalho é calculada a contribuição de duas impurezas magnéticas ao calor específico e à entropia de um metal através do grupo de renormalização numérico. Tal sistema físico foi descrito pelo modelo Kondo de duas impurezas, onde cada impureza é simplesmente um momento magnético associado a um spin S=1/2, e representa um elétron ocupando um orbital de uma impureza magnética adicionada ao metal não magnético.Para tornar possível o cálculo com malhas de discretização grossas, foi introduzida uma correção no processo de discretização, levando a novas expressões para as energias da banda de c

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2

Veiga, Rodrigo Soares. "Efeitos de hibridização correlacionada no modelo de Anderson de uma impureza." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-22082012-091816/.

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O desenvolvimento de novos materiais tem tido papel fundamental nos recentes avanços tecnológicos. Esse progresso depende muito de fundamentos teóricos que abordem mecanismos microscópicos da matéria, ou seja, como átomos e moléculas interagem e geram configurações especiais, responsáveis pelo seu comportamento macroscópico. Dentre os materiais de interesse na atualidade estão os sistemas contendo impurezas magnéticas diluídas, isto é, átomos com camadas d ou f incompletas imersos, por exemplo, em metais não magnéticos, como átomos de ferro em uma matriz de cobre. Tradicionalmente, estes siste

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3

Motahari, Sareh [Verfasser]. "Kondo physics and thermodynamics of the Anderson impurity model by distributional exact diagonalization / Sareh Motahari." Halle, 2017. http://d-nb.info/1147380651/34.

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4

Kritchevski, Evgenij. "Hierarchical Anderson model." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115890.

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In this thesis, we study the spectral properties of the hierarchical Anderson model. This model is an approximation of the Anderson tight-binding model on Zd , with the usual discrete Laplacian replaced by a hierarchical long-range interaction operator. In the hierarchical Anderson model, we are given a countable set X endowed with a hierarchical structure. The free hierarchical Laplacian is a self-adjoint operator Delta acting on the Hilbert space l 2( X ). The spectrum of Delta consists of isolated infinitely degenerate eigenvalues. We look at small random perturbations of the operator Delta

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5

Rael, Michael Brian. "Results on the Parabolic Anderson Model." Thesis, University of California, Irvine, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3562176.

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<p> In this dissertation we present various results pertaining to the Parabolic Anderson Model. First we show that the Lyapunov exponent, λ(κ), of the Parabolic Anderson Model in continuous space with Stratonovich differential is <i>O</i>(κ<sup>1/3</sup>) near 0. We prove the required upper bound, the lower bound having been proven in (Cranston & Mountford 2006). </p><p> Second, we prove the existence of stationary measures for the Parabolic Anderson Model in continuous space with Ito differential. Furthermore, we prove that these measures are associated and determin

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6

Smith, Victoria Emma. "Theoretical studies of the periodic Anderson model." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400249.

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7

Hamza, Eman F. "Localization properties for the unitary Anderson model." Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2008r/hamza.pdf.

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8

Gilbert, Anne Beatrice. "Disorder and Interactions in the Periodic Anderson Model." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489444.

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9

Charles, Noah S. "Multifractal Methods for Anderson Transitions." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595519105865006.

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10

Ozkan, Ibrahim Ali. "Thermodynamic model for associating polymer solutions." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-05042004-142825/unrestricted/ozkan%5Fibrahim%5Fa%5F200408%5Fphd.pdf.

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Thesis (Ph. D.)--School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2005. Directed by Amyn S. Teja.<br>Dr. Thomas H. Sanders, Committee Member ; Dr. Peter J. Ludovice, Committee Member ; Dr. J. Carson Meredith, Committee Member ; Dr. William J. Koros, Committee Member ; Dr. Amyn S. Teja, Committee Chair. Includes bibliographical references.

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11

Uski, V., B. Mehlig, R. A. Romer, and M. Schreiber. "Smoothed universal correlations in the two-dimensional Anderson model." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801066.

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We report on calculations of smoothed spectral correlations in the twodimensional Anderson model for weak disorder. As pointed out in (M. Wilkinson, J. Phys. A: Math. Gen. 21, 1173 (1988)), an analysis of the smoothing dependence of the correlation functions provides a sensitive means of establishing consistency with random matrix theory. We use a semiclassical approach to describe these fluctuations and offer a detailed comparison between numerical and analytical calculations for an exhaustive set of two-point correlation functions. We consider parametric correlation functions with an externa

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12

Halasan, Florina. "Absolutely continuous spectrum for the Anderson model on trees." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/18857.

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This dissertation is an examination of the absolutely continuous spectrum for the Anderson model on different types of trees. The text is divided into four chapter: an introduction, two main chapters and conclusions. In Chapter 2 the existence of purely absolutely continuous spectrum is proven for the Anderson model on a Cayley tree, or Bethe lattice, of degree K. The method used, a geometric one, is based on some properties of the hyperbolic distance. It is a simplified generalization of a result for K=3 given by R. Froese, D. Hasler and W. Spitzer. In Chapter 3 a similar result is proven

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13

Phan, Van Nham. "Valence transition and superconductivity in the extended periodic Anderson model." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1242199965571-88317.

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In this thesis, an extended periodic Anderson model with an additional local Coulomb repulsion U f c between localized f electrons and conduction electrons is investigated by use of the projector-based renormalization method (PRM). First, it is shown that the model in one dimension shows a valence transition, which becomes sharper, when the energy of the f level approaches the Fermi level. The transition becomes also enhanced, when the hybridization V between the localized and conduction electrons decreases, for the case that the total number of electrons is fixed. In the two-dimensional case,

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14

Eilmes, A., R. A. Römer, and M. Schreiber. "The two-dimensional Anderson model of localization with random hopping." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801429.

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We examine the localization properties of the 2D Anderson Hamiltonian with off-diagonal disorder. Investigating the behavior of the participation numbers of eigenstates as well as studying their multifractal properties, we find states in the center of the band which show critical behavior up to the system size N=200x200 considered. This result is confirmed by an independent analysis of the localization lengths in quasi-1D strips with the help of the transfermatrix method. Adding a very small additional onsite potential disorder, the critical states become localized.

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15

Potapova, Julia. "Melting ice with salt - a thermodynamic model." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18473.

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Road salting forms an essential element in the winter maintenance of roads. With salt usage increasing there is a need for an optimizing of salt practices. This master thesis is focused on the melting of ice below 0°C with use of salt (the de-icing process). The use of dissolved salt (Sodium Chloride) is considered only, and the melting process that takes place in an adiabatic system. The increased understanding of the physics of ice melting will hopefully contribute into optimizing de-icing operations. The thermodynamics of ice melting by salt has been studied by developing a calculation

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16

Tagner, Nikita, and Arian Abedin. "Thermodynamic model for power generating gas turbines." Thesis, KTH, Energiteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170917.

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Gasturbiner används i en mängd olika sammanhang, från kraftgenerering till flygplansmotorer. Prestandan hos gasturbiner beror på omgivningstillstånd såsom temperatur och tryck. Gasturbintillverkare förser ofta vissa parametrar, exempelvis uteffekt och massflöde i avgaserna vid väldefinierade standard tillstånd, ofta refererade till som ISO-tillstånd. På grund av det tidigare beskrivna beroendet är det nödvändigt för köpare att kunna förutspå prestandan vid platsen där gasturbinen ska användas. I denna studie har en termodynamisk modell för kraftgenerande gasturbiner konstruerats. Modellen för

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17

Pai, R. V., A. Punnoose, and R. A. Römer. "The Mott-Anderson transition in the disordered one-dimensional Hubbard model." Universitätsbibliothek Chemnitz, 1998. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801405.

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We use the density matrix renormalization group to study the quantum transitions that occur in the half-filled one-dimensional fermionic Hubbard model with onsite potential disorder. We find a transition from the gapped Mott phase with algebraic spin correlations to a gapless spin-disordered phase beyond a critical strength of the disorder 1 c ss U= 2. Both the transitions in the charge and spin sectors are shown to be coincident. We also establish the finite-size corrections to the charge gap and the spin-spin correlation length in the presence of disorder and using a finite-size-scaling anal

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18

Elsner, Ulrich, Volker Mehrmann, Rudolf A. Römer, and Michael Schreiber. "The Anderson Model of Localization: A Challenge for Modern Eigenvalue Methods." Universitätsbibliothek Chemnitz, 2005. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200501053.

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We present a comparative study of the application of modern eigenvalue algorithms to an eigenvalue problem arising in quantum physics, namely, the computation of a few interior eigenvalues and their associated eigenvectors for the large, sparse, real, symmetric, and indefinite matrices of the Anderson model of localization. We compare the Lanczos algorithm in the 1987 implementation of Cullum and Willoughby with the implicitly restarted Arnoldi method coupled with polynomial and several shift-and-invert convergence accelerators as well as with a sparse hybrid tridiagonalization method. We demo

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19

Vasquez, Louella J. "High precision multifractal analysis in the 3D Anderson model of localisation." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/3811/.

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This work presents a large scale multifractal analysis of the electronic state in the vicinity of the localisation-delocalisation transition in the three-dimensional Anderson model of localisation using high-precision data and very large system sizes of up to L3 = 2403. The multifractal analysis is implemented using box- and system- size scaling of the generalized inverse participation ratios employing typical and ensemble averaging techniques. The statistical analysis in this study has shown that in the thermodynamic limit a proposed symmetry relation in the multifractal exponents is true for

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20

Ferreira, João Vitor Batista. "Modelo de Anderson de dois canais." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-18102001-141739/.

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Nozières e Blandin generalizaram o Modelo Kondo através da inclusão de mais graus de liberdade. Eles investigaram um sistema formado de uma impureza magnética em um metal hospedeiro, considerando a estrutura orbital da impureza, campo cristalino e interações spin-órbita. Este sistema é representado pelo Hamiltoniano de Kondo Multicanal: a interação entre a impureza local e a banda de condução é feita via canais (cada canal representa um conjunto de números quânticos bem definidos). Nozières e Blandin mostraram o aparecimento de um ponto fixo anômalo no regime de acoplamento finito. Esse ponto

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21

Schnitzler, Adrian [Verfasser], and Jürgen [Akademischer Betreuer] Gärtner. "Asymptotic properties of the parabolic Anderson model / Adrian Schnitzler. Betreuer: Jürgen Gärtner." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1016533403/34.

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22

Tusch, Michael Andreas. "Interplay between disorder and electron interactions : theoretical studies of an Anderson-Hubbard model." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359510.

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23

Paula, Cíntia Aguiar de. "Densidade espectral para o Modelo de Anderson de duas impurezas." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-11062008-153727/.

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Calculamos a densidade espectral do modelo de Anderson de duas impurezas por meio de uma extensão do grupo de renormalização numérico (GRN) preservando a assimetria partícula-buraco do modelo. O estado fundamental deste modelo depende fortemente da competição entre a interação RKKY 1 e a temperatura de Kondo TK. Essa competição gera três regimes característicos: (i) 11\\ « k B TK, regime Kondo; (ii) - 1» kBTK, regime ferromagnético; and (iii) 1» kBTK, regime antiferromagnético. O Hamiltoniano é invariante sob inversão das coordenadas da impureza ± R/2. Seus auto-estados, portanto, podem ser cl

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24

Silva, Marcelo Ferreira da. "Densidade espectral para o modelo de Anderson de duas impurezas sem correlação eletrônica." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-07052014-145918/.

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Este trabalho calcula analítica e numericamente a densidade espectral para o modelo de Anderson de duas impurezas sem correlação eletrônica (U=0). Nossos resultados servem como passo inicial para se entender o modelo com a correlação eletrônica. O modelo estudado descreve a interação entre elétrons de um metal e impurezas magnéticas localizadas, e a simplificação, U = 0, torna o Hamiltoniano quadrático permitindo assim que se divida o mesmo em dois termos: um envolvendo apenas operadores pares (canal par) e outro envolvendo apenas operadores ímpares (canal ímpar). Cada termo encontrado difere

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25

Bagci, V. M. Kemal. "Anderson Localization in Two-Channel Wires with Correlated Disorder: DNA as an Application." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5204/.

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This research studied the Anderson localization of electrons in two-channel wires with correlated disorder and in DNA molecules. It involved an analytical calculation part where the formula for the inverse localization length for electron states in a two-channel wire is derived. It also involved a computational part where the localization length is calculated for some DNA molecules. Electron localization in two-channel wires with correlated disorder was studied using a single-electron tight-binding model. Calculations were within second-order Born-approximation to second-order in disorder par

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26

van, Bloemen Waanders Paul Nicholas. "Thermodynamic Based Model Eliciting Activities For Undergraduate Mechanical Engineering Education." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/555.

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Undergraduate engineering education is designed to prepare students for their careers. The rise of technology in modern engineering allows for a shift in the way undergraduates are prepared for the modern workplace. Model Eliciting Activities (MEAs) allow students to think critically about their own work and allow instructors to analyze the students’ problem solving methods. To ensure that new MEAs are as effective as possible they are subject to six basic principles: model construction, reality, generalizability, self-assessment, model documentation, and effective prototype. This document

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27

Abutayeh, Mohammad. "Thermodynamic Model and the Controlling Variables of Phosphate Lattice Loss." Scholar Commons, 1999. https://scholarcommons.usf.edu/etd/1551.

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A thermodynamic model was developed based upon five equilibrium reactions to predict the limits of distribution of phosphates between the liquid and the solid phases in a reactor used to extract phosphoric acid from phosphate rock. A computer code was generated to carry out different simulations of the model using several inputs of temperatures and liquid phase sulfuric acid contents. Ideal Solution, Debye-Hückel, and Robinson-Guggenheim-Bates electrolyte activity coefficient models were employed alternately in each simulation to complete the thermodynamic model and the outputs were compared t

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28

Baǧcı, V. M. Kemal Krokhin Arkadii. "Anderson localization in two-channel wires with correlated disorder DNA as an application /." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5204.

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29

Hill, Alexandra. "Thermodynamic and Morphological Properties of Ceramide-1-Phosphate Model Monolayer Systems." Kent State University Honors College / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1291831964.

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30

Neal, Montford L. "A model for recognition, certification, and ordination of Church of God clergy persons." Theological Research Exchange Network (TREN), 1989. http://www.tren.com.

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31

Schmidt, Sylvia. "Das parabolische Anderson-Modell mit Be- und Entschleunigung." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-63649.

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We describe the large-time moment asymptotics for the parabolic Anderson model where the speed of the diffusion is coupled with time, inducing an acceleration or deceleration. We find a lower critical scale, below which the mass flow gets stuck. On this scale, a new interesting variational problem arises in the description of the asymptotics. Furthermore, we find an upper critical scale above which the potential enters the asymptotics only via some average, but not via its extreme values. We make out altogether five phases, three of which can be described by results that are qualitatively simi

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32

Puschmann, Martin. "Anderson transitions on random Voronoi-Delaunay lattices." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-231900.

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The dissertation covers phase transitions in the realm of the Anderson model of localization on topologically disordered Voronoi-Delaunay lattices. The disorder is given by random connections which implies correlations due to the restrictive lattice construction. Strictly speaking, the system features "strong anticorrelation", which is responsible for quenched long-range fluctuations of the coordination number. This attribute leads to violations of universal behavior in various system, e.g. Ising and Potts model, and to modifications of the Harris and the Imry-Ma criteria. In general, these ex

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33

Anderson, Allan Lawrence. "Assumptions constructing a school superintendent's mental model for technology use." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/anderson/AndersonA0509.pdf.

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The continual innovation with technology in the world has caused many significant changes which have affected Montana superintendents' managerial, instruction, and political roles. The political environments of NCLB and community technology expectations created a unique context for the superintendent of the case study. Montana superintendents are learning to integrate technology into their roles to improve schools and increasing student growth. Approaches a Montana superintendent with a "high reputation" for technology implemented into his roles to improve schools and increase student achievem

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34

Abrahamowicz, Maria Izabela. "A thermodynamic and dynamic Lagrangian model for icebergs: a data-model intercomparison for the Southern Ocean." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18677.

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A Lagrangian dynamic and thermodynamic iceberg drift model was developed, coded and validated against observations. First, the model was used to create a climatology (1979-2000) of iceberg drift in the Southern Ocean. The simulation reproduced the main patterns of motion and the northernmost extent of Antarctic icebergs as inferred from satellite and ship observations. The model was then used to hindcast 29 giant iceberg drift tracks in what was the first study of an iceberg model ability to reproduce the motion of individual icebergs around the Antarctic continent on timescales of years. The

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35

Meyer, Karsten. "Flussgleichungen für das Anderson-Gitter zur Beschreibung von Schwer-Fermion-Systemen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1079709122000-46905.

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In der vorliegenden Arbeit wird die Physik von Schwer-Fermion-Systemen, die durch Lanthanid- und Aktinid-Übergangsmetallverbindungen realisiert werden, untersucht. Die Basis für eine theoretische Beschreibung bildet das Anderson-Gitter, welches das Wechselspiel freier Leitungselektronen und stark korrelierter Elektronen aus lokalisierten f-Orbitalen charakterisiert. Als Zugang zu diesem Modell wird die von Wegner vorgeschlagene Flussgleichungsmethode verwendet, ein analytisches Verfahren, welches auf der Konstruktion eines effektiven Hamilton-Operators basiert. Ein zentrales Thema dieser Arbei

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36

Tautenhahn, Martin, and Ivan Veselic'. "A note on correlated and non-monotone Anderson models." Universitätsbibliothek Chemnitz, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200800063.

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37

Arnold, Wolfram Till. "Theory of electron localization in disordered systems /." view abstract or download file of text, 2000. http://wwwlib.umi.com/cr/uoregon/fullcit?p9986736.

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Thesis (Ph. D.)--University of Oregon, 2000.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 199-204). Also available for download via the World Wide Web; free to UO users.

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Meyer, Karsten. "Flussgleichungen für das Anderson-Gitter zur Beschreibung von Schwer-Fermion-Systemen." Doctoral thesis, Technische Universität Dresden, 2003. https://tud.qucosa.de/id/qucosa%3A24313.

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In der vorliegenden Arbeit wird die Physik von Schwer-Fermion-Systemen, die durch Lanthanid- und Aktinid-Übergangsmetallverbindungen realisiert werden, untersucht. Die Basis für eine theoretische Beschreibung bildet das Anderson-Gitter, welches das Wechselspiel freier Leitungselektronen und stark korrelierter Elektronen aus lokalisierten f-Orbitalen charakterisiert. Als Zugang zu diesem Modell wird die von Wegner vorgeschlagene Flussgleichungsmethode verwendet, ein analytisches Verfahren, welches auf der Konstruktion eines effektiven Hamilton-Operators basiert. Ein zentrales Thema dieser Arbei

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39

Sohn, Munhee 1981. "An integrated geometric and thermodynamic performance model of the 2.670 Stirling Engine." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32788.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (leaf 30).<br>2.670 is a required mechanical engineering class taught during the Independent Activities Period (IAP) at MIT in which each student constructs a Stirling Engine. For the most part, all of the engine parts are uniform, but if so desired, students are allowed to make design changes to certain parts in order to compete for the fastest engine at the end of the class. The research team in the MIT CADlab is working on an environment, called DOME, which mak

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40

Ackler, Harold D. (Harold Dale) 1964. "Thermodynamic calculations and model experiments on thin intergranular amorphous films in ceramics." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10423.

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41

Blanco, Cavero Diego. "Assessment and optimization of the indicated cycle with a 0D thermodynamic model." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/115934.

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[ES] Las amenazas a las que se enfrentan los motores de combustión interna, tales como emisiones contaminantes, agotamiento del petróleo o el auge de otros tipos de motores (vehículo eléctrico), vinculan el futuro de los vehículos propulsados por este tipo de motor a la mejora del mismo en cuanto a consumo de combustible y a emisiones contaminantes se refiere. Adicionalmente, la alta exigencia de la normativa actual y venidera está forzando a las empresas de automoción a centrarse en el desarrollo de estrategias innovadoras dirigidas a aumentar el rendimiento del motor con baja repercusión en

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42

Rayford, Vernon Alvin. "A cross cultural communication model of ministry." Theological Research Exchange Network (TREN), 1989. http://www.tren.com.

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43

Chaves, Neto Antonio Maia de Jesus. "Modelo de Anderson para duas impurezas : metodo dos campos efetivos." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277076.

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Orientadores: Roberto Eugenio Lagos Monaco, Guillermo Gerardo Cabrera Oyarzun<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-04T08:16:12Z (GMT). No. of bitstreams: 1 ChavesNeto_AntonioMaiadeJesus_D.pdf: 1164069 bytes, checksum: a0ef564c6eb492fa671d7430fad4221a (MD5) Previous issue date: 2004<br>Resumo: O Hamiltoniano do modelo de Anderson para duas impurezas é estudado via um desacoplamento das funções de Green. Neste caso resulta ser equivalente a aproximação de potencial coerente (CPA) que também, neste caso

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Pereira, Weendel Trindade. "Cálculo da corrente fotoeletrônica do Modelo de Anderson do nível ressonante." Universidade Federal do Amazonas, 2006. http://tede.ufam.edu.br/handle/tede/3463.

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Made available in DSpace on 2015-04-22T22:07:27Z (GMT). No. of bitstreams: 1 WEENDEL_TRINDADE_PEREIRA.pdf: 828783 bytes, checksum: 994f37fcb693c6f17f9c55c21c004214 (MD5) Previous issue date: 2006-09-26<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>In this dissertation there was calculated the photoemission current of an impurity with fluctuation of valence in a host metal using both the Anderson model of resonant level (U = 0) with screening G and the numerical renormalization group method. The Anderson model is composed by the conduction band, representing the host

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Waters, Laura Jane. "Thermodynamic analysis of the partitioning of dialkyl phthalate esters with model cell membranes." Thesis, University of Greenwich, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483499.

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SIQUEIRA, ROGERIO NAVARRO CORREIA DE. "THERMODYNAMIC MODELING OF TIO2 CONTAINING SLAGS: KAPOOR-FROHBERG-GAYE MODIFIED QUASI-CHEMICAL MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8045@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O presente trabalho teve como objetivo central, a modelagem termodinâmica computacional de escórias contendo TiO2 através do modelo termodinâmico quase-químico estatístico de Kapoor-Frohberg- Gaye. Neste contexto, os seguintes pseudo-binários foram investigados: Al2O3-TiO2, MgOTiO2, MnO-TiO2 e FeO-TiO2. Os resultados das otimizações demonstraram a possibilidade de emprego do referido modelo para uma descrição quantitativa do comportamento termodinâmico destes sistemas. Tanto os diagramas de fases quanto os dados de atividade

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Foster, Andrew William. "Characterisation of a cyanobacterial nickel sensor and a thermodynamic model of metal sensing." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/2395.

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The product of Synechocystis PCC 6803 open reading frame slr0176, InrS (Internal nickel responsive Sensor) a member of the CsoR-RcnR metalloregulatory family, has been characterised in the course of this work and found to regulate the expression of nrsD, encoding a nickel export protein, in a nickel dependent manner. InrS occludes a previously unidentified cryptic promoter in a nickel resistance operon. In addition to Ni(II) InrS is also competent to bind and respond to Zn(II), Co(II) Cu(II) and Cu(I) in vitro as determined by metal binding studies & fluorescence anisotropy. The factors that f

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Kinza, Michael Wolfgang [Verfasser]. "Single impurity Anderson model and dynamical mean field theory : a functional renormalization group study / Michael Wolfgang Kinza." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/105154369X/34.

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Ortgiese, Marcel. "Stochastic processes in random environment." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507234.

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We are interested in two probabilistic models of a process interacting with a random environment. Firstly, we consider the model of directed polymers in random environment. In this case, a polymer, represented as the path of a simple random walk on a lattice, interacts with an environment given by a collection of time-dependent random variables associated to the vertices. Under certain conditions, the system undergoes a phase transition from an entropy-dominated regime at high temperatures, to a localised regime at low temperatures. Our main result shows that at high temperatures, even though

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Ferreira, João Vitor Batista. "Estudo do calor específico de um sistema de dois níveis acoplados a um banho fermiônico." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-24062008-161338/.

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Estudamos o calor específico de um sistema formado por duas impurezas adsorvidas, sem spin, em meio fermiônico (banda de condução do metal) e que contém um buraco (elétron) tunelando entre elas. Modelamos esse sistema por dois níveis acoplados e que sofrem interação Coulombiana com a banda de condução. Através da análise das curvas de calor específico, investigamos a alteração (renormalização) da taxa de tunelamento em função da interação eletrostática entre os elétrons da banda de condução e o buraco tunelante e da separação entre as impurezas. Utilizamos o Hamiltoniano de Kondo de tunelament

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