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Tesis sobre el tema "Semi-linear"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 20 de febrero de 2023

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1

Price, C. J. "Non-linear semi-infinite programming." Thesis, University of Canterbury. Mathematics and Statistics, 1992. http://hdl.handle.net/10092/7920.

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Optimisation problems occur in many branches of science, engineering, and economics, as well as in other areas. The diversity of the various types of optimisation problems is extremely large, and so a unified approach is not attempted here. This thesis concentrates on a specific type of problem: non-linear semi-infinite programming.

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2

Bush, Christopher A. "Semi-parametric Bayesian linear models /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487856076417948.

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3

Karlsson, Robert. "Digital predistortion of semi-linear power amplifier." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2617.

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<p>In this thesis, a new way of using predisortion for linearization of power amplifiers is evaluated. In order to achieve an adequate power level for the jamming signal, power amplifiers are used in military jamming systems. Due to the nonlinear characteristic of the power amplifier, distortion will be present at the output. As a consequence, unwanted frequencies are subject to jamming. To decrease the distortion, linearization of the power amplifier is necessary. </p><p>In the system of interest, a portion of the distorted power amplifier output signal is fed back. Using this measurement, a

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4

Lisbôa, Tales de Vargas. "Uma metodologia para a obtenção de respostas semi-analíticas para flexão linear e não-linear de placas semi-espessas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/18593.

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Este trabalho apresenta uma metodologia para obtenção de benchmarks e prontuários de soluções para flexão de placas semi-espessas sob grandes deslocamentos. O modelo de placa de Mindlin foi o empregado para considerar a deformação cisalhante, e soluções semi-analíticas foram obtidas através de uma variação do método de Rayleigh-Ritz. O método, denominado pb- 2, facilita a imposição das condições de contorno cinemáticas, ampliando consideravelmente a aplicabilidade do método de Rayleigh-Ritz convencional. A metodologia foi implementada utilizando programas de computação simbólica, o que permiti

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5

Davidson, Bryan Duncan. "Recursive projection for semi-linear partial differential equations." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294932.

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6

Wilcox, Diane. "Multivalued semi-Fredholm operators in normed linear spaces." Doctoral thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/4945.

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Bibliography: leaves 176-182.<br>Certain properties associated with these classes are stable under small perturbation, i.e. stable under additive perturbation by continuous operators whose norms are less than the minimum modulus of the relation being perturbed, and are also stable under perturbation by compact, strictly singular or strictly cosingular operators. In this work we continue the study of these classes and introduce the classes of α-Atkinson and β-Atkinson relations. These are subclasses of upper and lower semi-Fredholm relations respectively, having generalised inverses and defined

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7

Ruan, Yang. "Smooth and locally linear semi-supervised metric learning /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CSED%202009%20RUAN.

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8

Bui, Tang Bao Ngoc. "Semi-linear waves with time-dependent speed and dissipation." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2014. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-147037.

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The main goal of our thesis is to understand qualitative properties of solutions to the Cauchy problem for the semi-linear wave model with time-dependent speed and dissipation. We greatly benefited from very precise estimates for the corresponding linear problem in order to obtain the global existence (in time) of small data solutions. This reason motivated us to introduce very carefully a complete description for classification of our models: scattering, non-effective, effective, over-damping. We have considered those separately.

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9

Michalk, Linda [Verfasser]. "Semi-Analytical Semi-Lagrangian Discontinuous Galerkin Advection Scheme for the Compressible Linear Advection Equation / Linda Michalk." Berlin : Freie Universität Berlin, 2018. http://d-nb.info/1176707140/34.

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10

Huber, Gerald. "Non-linear calculations of composite sections and semi-continuous joints /." Berlin : Ernst, 2000. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=3433012504.

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11

Chopping, M. J. "Linear semi-empirical kernel-driven bidirectional reflectance distribution function models in monitoring semi-arid grasslands from space." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262949.

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12

Bennett, G. N. "A semi-linear elliptic problem arising in the theory of superconductivity." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340827.

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13

Manicom, Gray Thomas. "Existence results for a class of semi-linear initial value problems." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/63288.

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The main result of this thesis is an existence result for parabolic semi-linear problems. This is done by reformulating the semi-linear problem as an abstract Cauchy problem ut(t) = Au(t) + f(t; u(t)), t > 0 u(0) = u0 (1) for u0 2 X, where X is a Banach space. We then develop and use the theory of compact semigroups to prove an existence result. In order to make this result applicable, we give a characterization of compact semigroups in terms of its resolvent operator and continuity in the uniform operator topology. Thus, using the theory of analytic semigroups, we are able to determ

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14

Silva, Júnior Paulo Celso Pamplona. "Análise não-linear de pórticos planos metálicos com conexões semi-rígidas /." Florianópolis, SC, 2000. http://repositorio.ufsc.br/xmlui/handle/123456789/78296.

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Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.<br>Made available in DSpace on 2012-10-17T12:27:09Z (GMT). No. of bitstreams: 0Bitstream added on 2014-09-25T18:56:54Z : No. of bitstreams: 1 170023.pdf: 31181017 bytes, checksum: 9dafeb6c8f5f74edff845e983f541416 (MD5)<br>O presente trabalho apresenta os procedimentos para a análise numérica do comportamento de pórticos planos com conexões metálicas semi-rígidas entre vigas e pilares de estruturas de aço. Apesar de, tradicionalmente, o cálculo de estruturas metálicas ser realizado imaginando ligações rígidas

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15

Magolu, Monga-Made. "Sparse approximate block factorizations for solving symmetric positive (semi)definite linear systems." Doctoral thesis, Universite Libre de Bruxelles, 1992. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212924.

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16

Santana, Claudia Lucia de Oliveira. "Análise não-linear de pórticos planos de madeira com ligações semi-rígidas." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257288.

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Orientador : Nilson Tadeu Mascia<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola<br>Made available in DSpace on 2018-08-03T14:01:36Z (GMT). No. of bitstreams: 1 Santana_ClaudiaLuciadeOliveira_D.pdf: 2159650 bytes, checksum: 98e13dcad36cb7a37e691ac1aed3cc6c (MD5) Previous issue date: 2002<br>Doutorado

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17

Ramage, Alexander. "Linear disturbance evolution in the semi-infinite Stokes layer and related flows." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/107589/.

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The stability of the semi-infinite Stokes layer is explored. This is the flow generated in a semi-infinite region of otherwise stationary fluid by the sinusoidal oscillation of a bounding plate and is described by an exact solution to the Navier--Stokes equations. A linear stability analysis is carried out, based on Floquet theory, that reduces the disturbance equations to an eigenvalue problem that determines the asymptotic temporal behaviour of disturbances. This method is also applied to the finite Stokes layer (being the flow in a channel bounded by oscillating plates) and modifications in

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18

SILVA, Isis Gabriella de Arruda Quinteiro. "Análise de um sistema parabólico semi-linear com não-linearidade não-local." Universidade Federal de Pernambuco, 2010. https://repositorio.ufpe.br/handle/123456789/7113.

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Made available in DSpace on 2014-06-12T18:29:03Z (GMT). No. of bitstreams: 2 arquivo6736_1.pdf: 1174894 bytes, checksum: 1469e3c3f5a8adcf9a070f5fa5cc9e27 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2010<br>Universidade Federal Rural de Pernambuco<br>Estudamos o sistema parabólico não-local acoplado ut − Δu = ∫ t 0 (t − s)−1 |v|p−1v(s)ds, vt − Δv = ∫ t 0 (t − s)−2 |u|q−1u(s)ds onde 0 ≤ γ1, γ2 < 1 e p, q ≥ 1. Consideramos o problema em (0

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19

Saldanha, Adelmo Coelho. "Análise não-linear do comportamento de pórticos planos metálicos com ligações semi-rígidas." reponame:Repositório Institucional da UFOP, 1997. http://www.repositorio.ufop.br/handle/123456789/6160.

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Programa de Pós Graduação em Engenharia Civil. Departamento de Engenharia Civil, Escola de Minas, Universidade Federal de Ouro Preto.<br>Submitted by giuliana silveira (giulianagphoto@gmail.com) on 2016-01-20T16:40:41Z No. of bitstreams: 1 DISSERTAÇÃO_AnáliseNão-linearComportamento.pdf: 507375 bytes, checksum: 65fa1cb7720f27bc513c281ea73bffec (MD5)<br>Approved for entry into archive by Oliveira Flávia (flavia@sisbin.ufop.br) on 2016-01-20T18:08:54Z (GMT) No. of bitstreams: 1 DISSERTAÇÃO_AnáliseNão-linearComportamento.pdf: 507375 bytes, checksum: 65fa1cb7720f27bc513c281ea73bffec (MD5)<br>Made

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20

Zebiri, Hossni. "Hinf-Linear Parameter Varying Controllers Order Reduction : Application to semi-active suspension control." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH7733/document.

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L'amélioration permanente de la qualité et des performances des systèmes automatiques constitue un défi majeur dans la théorie du contrôle. La théorieHinf a permis d'améliorer considérablement les performances des correcteurs. Ces derniers reposent sur des modèles mathématiques qui sont potentiellement d'ordre élevé (c.-à-d. comprenant un nombre élevé d'équations différentielles). De plus, l'ajout de poids de pondérations spécifiant les performances à respecter accroit encore plus leur ordre. La complexité algorithmique résultante peut alors rendre leur implantation difficile voire même imposs

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21

Wang, Yi, and Masahiko Sakai. "Decidability of Termination for Semi-Constructor TRSs, Left-Linear Shallow TRSs and Related Systems." Springer, 2006. http://hdl.handle.net/2237/9240.

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22

Blöthner, Florian [Verfasser]. "Non-Uniform Semi-Discretization of Linear Stochastic Partial Differential Equations in R / Florian Blöthner." München : Verlag Dr. Hut, 2019. http://d-nb.info/1181514207/34.

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23

Zhao, Huaizhong. "The stochastic elementary formula method and approximate travelling waves for semi-linear reaction diffusion equations." Thesis, University of Warwick, 1994. http://wrap.warwick.ac.uk/4236/.

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In this thesis we consider approximate travelling wave solutions for stochastic and generalised KPP equations and systems by using the stochastic elementary formula method of Elworthy and Truman. We begin with the semi-classical analysis for generalised KPP equations. With a so-called "late caustic" assumption we prove that the global wave front is given by the Hamilton Jacobi function. We prove a Huygens principle on complete Riemannian manifolds without cut locus, with some bounds on their volume elements, in particular Cartan-Hadamard manifolds. Based on the semiclassical analysis we then c

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24

Meyer, John Christopher. "Theoretical aspects of the Cauchy problem for non-Lipschitz semi-linear parabolic partial differential equations." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4222/.

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The aim of this thesis is to provide a generic approach to the study of semi-linear parabolic partial differential equations when the nonlinearity fails to be Lipschitz continuous, but is in the class of Hӧlder continuous functions or the class of upper Lipschitz continuous functions. New results are obtained concerning the well-posedness (in the sense of Hadamard) of the initial value problem, namely, uniqueness and conditional continuous dependence results for upper Lipschitz continuous nonlinearities, and an existence result for Hӧlder continuous nonlinearities. To obtain these results, two

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25

Hossain, Mohammad Zakir. "A small-sample randomization-based approach to semi-parametric estimation and misspecification in generalized linear mixed models." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/24641.

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In a generalized linear mixed model (GLMM), the random effects are typically uncorrelated and assumed to follow a normal distribution. However, findings from recent studies on how the misspecification of the random effects distribution affects the estimated model parameters are inconclusive. In the thesis, we extend the randomization approach for deriving linear models to the GLMM framework. Based on this approach, we develop an algorithm for estimating the model parameters of the randomization-based GLMM (RBGLMM) for the completely randomized design (CRD) which does not require normally distr

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26

Beale, Robert George. "The influence of semi-rigid connections on the non-linear behaviour of pallet rack and scaffold structures." Thesis, Oxford Brookes University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401804.

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27

Deshpande, Sagar Shriram. "Semi-automated Methods to Create a Hydro-flattened DEM using Single Photon and Linear Mode LiDAR Points." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1491300120665946.

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28

Lim, Kwanthar. "Semi-automated registration with direct linear transformation and quality evaluation of digital photogrammetry and terrestrial laser scanning." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/2592.

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Photogrammetry and Laser Scanning can be used to complement one another, during instances where digital images are taken of the object of interest with the intention to merge the 3D data and image in order to reconstruct photorealistic virtual models with photo quality and metric realism. Laser scanning acquires 3D data points and intensity information of objects but is unable to directly obtain photorealistic colour in most cases. To get photorealistic colour, some laser scanners come with an onboard camera, or alternatively a separate camera is used, and registration is required for b

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29

Castro, Rafael Alves de. "Modelagem Computacional de Ligações Semi-Rígidas e sua Influência na Resposta Dinâmica Não-Linear de Pórticos de Aço." Universidade do Estado do Rio de Janeiro, 2006. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=426.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>A comunidade científica tem conhecimento de que uma das etapas mais relevantes no projeto de estruturas de aço e mistas, diz respeito a uma avaliação precisa sobre os modelos estruturais que representam o comportamento real das ligações viga-coluna. Este assunto tem sido objeto de vários trabalhos de pesquisa nas ultimas décadas. Na prática corrente do projeto de estruturas de aço, a grande maioria das ligações viga-coluna é representada por modelos flexíveis (rótulas) ou rígidos (engastes). Contudo, na maior parte dos casos prátic

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30

Ciminello, Monica. "Semi-passive control strategy using piezo ceramic patches in non linear commutation architecture for structural-accoustice smart systems." Paris, CNAM, 2010. http://www.theses.fr/2010CNAM0668.

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De nombreuses recherches sont aujourd’hui consacrées à l’étude et au développement de stratégies de réduction du bruit et des vibrations. Dans le domaine de l’acoustique comme dans le domaine des vibrations, différentes approches peuvent être envisagées. Une tendance actuelle est d’appliquer des techniques actives qui sont reconnues pour être efficaces sur une large bade de fréquence, mais qui souffrent cependant d’une complexité de mise en oeuvre et d’une nécessité d’un apport d’énergie extérieur qui rendent ces systèmes peu robustes et potentiellement instables. Les techniques passives, qui

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31

Dao, Tuan Anh. "Global in time existence of Sobolev solutions to semi-linear damped sigma-evolution equations in L^q scales." TU Bergakademie Freiberg, 2020. https://tubaf.qucosa.de/id/qucosa%3A71649.

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The main goal of this thesis is to prove the global (in time) existence of small data Sobolev solutions to semi-linear damped σ-evolution equations from suitable function spaces basing on L^q spaces by mixing additional L^m regularity for the data on the basis of L^q-L^q estimates for solutions, with q∈(1,∞) and m∈[1,q), to the corresponding linear models. To establish desired results, we would like to apply the theory of modified Bessel functions, Faà di Bruno's formula and Mikhlin-Hörmander multiplier theorem in the treatment of linear problems. In addition, some of modern tools from Harmo

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32

Porumamilla, Hemanth. "Modeling, analysis and non-linear control of a novel pneumatic semi-active vibration isolator a concept validation study /." [Ames, Iowa : Iowa State University], 2007.

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33

Milet, Rebecca Rolim. "Análise comparativa de métodos de cálculo para fundações de máquinas." Universidade Federal de Pernambuco, 2006. https://repositorio.ufpe.br/handle/123456789/5558.

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Made available in DSpace on 2014-06-12T17:40:15Z (GMT). No. of bitstreams: 2 arquivo6175_1.pdf: 2149513 bytes, checksum: ab08c15764ba1f2e807eff02c748c551 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2006<br>Os avanços tecnológicos industriais, nas últimas décadas, geraram o desenvolvimento de máquinas de alta performance e precisão que, por sua vez, têm demandado projetos otimizados de suas fundações. Cada vez mais, diversas tentativas têm que ser consideradas para se obter projetos de fundações que conciliem a máxima eficiência

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34

Marais, Tynan S. "A novel semi-passive process for sulphate removal and elemental sulphur recovery centred on a hybrid linear flow channel reactor." Doctoral thesis, Faculty of Engineering and the Built Environment, 2020. http://hdl.handle.net/11427/32843.

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South Africa (SA) currently faces a major pollution problem from mining impacted water, including acid rock drainage (ARD), as a consequence of the mining activities upon which the economy has been largely built. The environmental impact of ARD has been further exacerbated by the country's water scarce status. Increasingly scarce freshwater reserves require the preservation and strategic management of the country's existing water resources to ensure sustainable water security. In SA, the primary focus on remediation of ARDcontaminated water has been based on established active technologies. Ho

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35

Mata, Luciene Antinossi Cordeiro da. "Análise nao-linear pelo método dos elementos finitos de ligações por chapa simples levando em conta o comportamento semi-rígido." Universidade Federal de Minas Gerais, 1998. http://hdl.handle.net/1843/PASA-89GJQ9.

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The single plate framing connections are those where a plate is shop welded to the support element, either a beam or a column, and field bolted to the web of the supported beam. Usually, a single plate connection is assumed to be flexible but, actually, it is semi-rigid. This connection type was studied mainly by Richard, and his tests indicated that a significant moment can be developed at the end of the supported beam. Nonlinear finite element analyses of single plate framing connections are carried out. The assumed Load-Deformation behaviorof single bolt connections was based on the tests m

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36

Aguiar, Ademir Alves. "Análise semi-local do método de Gauss-Newton sob uma condição majorante." Universidade Federal de Goiás, 2014. http://repositorio.bc.ufg.br/tede/handle/tede/4251.

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Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2015-03-05T14:28:50Z No. of bitstreams: 2 Dissertação - Ademir Alves Aguiar - 2014.pdf: 1975016 bytes, checksum: 31320b5840b8b149afedc97d0e02b49b (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-03-06T10:38:03Z (GMT) No. of bitstreams: 2 Dissertação - Ademir Alves Aguiar - 2014.pdf: 1975016 bytes, checksum: 31320b5840b8b149afedc97d0e02b49b (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Made

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Vasconcelos, Julio Cezar Souza. "Modelo linear parcial generalizado simétrico." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/11/11134/tde-26072017-105153/.

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Neste trabalho foi proposto o modelo linear parcial generalizado simétrico, com base nos modelos lineares parciais generalizados e nos modelos lineares simétricos, em que a variável resposta segue uma distribuição que pertence à família de distribuições simétricas, considerando um preditor linear que possui uma parte paramétrica e uma não paramétrica. Algumas distribuições que pertencem a essa classe são as distribuições: Normal, t-Student, Exponencial potência, Slash e Hiperbólica, dentre outras. Uma breve revisão dos conceitos utilizados ao longo do trabalho foram apresentados, a saber: anál

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38

Zanatta, Ana Paula. "Sistema de suspensão eletromagnética semiativa com possibilidade de regeneração de energia." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/184556.

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Este trabalho aborda a aplicação de uma máquina elétrica síncrona do tipo tubular linear de ímãs permanentes em um sistema de suspensão semiativa. O uso de amortecedores eletromagnéticos lineares em sistemas de suspensão não é uma ideia nova, mas a maioria dos trabalhos publicados sobre este assunto concebem soluções ativas e negligenciam as semiativas, sobretudo com estudos experimentais. Nesta pesquisa é discutido um modelo dinâmico eletromecânico acoplado de um sistema de suspensão semiativa, considerando um amortecedor eletromagnético linear e também apresentando dados experimentais. Leis

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39

Bui, Tang Bao Ngoc [Verfasser], Micheal [Akademischer Betreuer] Reissig, Micheal [Gutachter] Reissig, and Karen [Gutachter] Yagdjian. "Semi-linear waves with time-dependent speed and dissipation / Tang Bao Ngoc Bui ; Gutachter: Micheal Reissig, Karen Yagdjian ; Betreuer: Micheal Reissig." Freiberg : Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2014. http://d-nb.info/1220911879/34.

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40

Ã–zgÃ¼n-Koca, S. Asli. "Computer-based representations in mathematics classrooms : the effects of multiple linked and semi-linked representations on students' learning of linear relationships /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486399451962818.

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41

Krisztin, Tamás. "Semi-parametric spatial autoregressive models in freight generation modeling." Elsevier, 2018. https://publish.fid-move.qucosa.de/id/qucosa%3A72336.

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This paper proposes for the purposes of freight generation a spatial autoregressive model framework, combined with non-linear semi-parametric techniques. We demonstrate the capabilities of the model in a series of Monte Carlo studies. Moreover, evidence is provided for non-linearities in freight generation, through an applied analysis of European NUTS-2 regions. We provide evidence for significant spatial dependence and for significant non-linearities related to employment rates in manufacturing and infrastructure capabilities in regions. The non-linear impacts are the most significant in the

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42

Lanzaro, Alfredo. "Microscopic flows of aqueous polyacrylamide solutions : a quantitative study." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/microscopic-flows-of-semidilute-polymer-solutions-a-quantitative-study(0741b854-c4f8-4c6b-a3f3-0eb821969a6c).html.

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43

Santos, Carlos Anselmo Dias. "ICMS ecológico : uma proposta para a região do semi-árido de Sergipe." Universidade Federal de Sergipe, 2006. https://ri.ufs.br/handle/riufs/4256.

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Since the 60´s a group of searchers in front of same aspects as: geographic growing, food production, etc, looking for analyze the future situation of the man kind in related to Environment. In this aspect, in consequence of the environmental worry there is the Conference in Rio de Janeiro named Rio 92, with main subject the approval of 21st agenda, whose main objective is to stimulate the environmental conservation and preservation. In this context, the state of Paraná became the first in the creation and implementation of Ecological ICMS, an economic instrument that has as main functions:

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44

Tristão, Tiago Santana. "Relações não lineares na curva de Phillips : uma abordagem não-paramétrica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/79047.

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Uma das principais preocupações da macroeconomia é a compreensão da dinâmica da inflação no curto prazo. Entender como a inflação se relaciona com a atividade econômica é decisivo para traçar estratégias de desinflação, assim como, de determinação da trajetória de política monetária. Uma questão que surge é qual a forma exata da relação inflação-produto. Ou seja, podemos caracterizar essa relação como não linear? Se sim, qual a forma dessa não linearidade? Para responder a essas perguntas, estimou-se a relação inflação-produto de forma não-paramétrica através de um local linear kernel estimato

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45

Chow, Tanya L. M., of Western Sydney Macarthur University, and Faculty of Business and Technology. "Systems of partial differential equations and group methods." THESIS_FBT_XXX_Chow_T.xml, 1996. http://handle.uws.edu.au:8081/1959.7/43.

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This thesis is concerned with the derivation of similarity solutions for one-dimensional coupled systems of reaction - diffusion equations, a semi-linear system and a one-dimensional tripled system. The first area of research in this thesis involves a coupled system of diffusion equations for the existence of two distinct families of diffusion paths. Constructing one-parameter transformation groups preserving the invariance of this system of equations enables similarity solutions for this coupled system to be derived via the classical and non-classical procedures. This system of equation is th

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46

Li, Kaixiang. "Structural vibration damping with synchronized energy transfer between piezoelectric patches." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00735788.

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Advanced materials such as carbon fiber, composite materials et al. are more and more used in modern industry. They make the structures lighter and stiffer. However, they bring vibration problems. Researchers studied numerous methods to eliminate the undesirable vibrations. These treatments are expected to be a compact, light, intellectual and modular system. Recently, a nonlinear technique which is known as Synchronized Switch Damping (SSD) technique was proposed. These techniques synchronously switched when structure got to its displacement extremes that leading to a nonlinear voltage on the

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47

Nguyen, Hoai Anh. "Non-linéarité optique géante à deux modes à partir d'une boîte quantique semi-conductrice dans un fil photonique." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY036/document.

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Contrôler la lumière avec de la lumière au niveau du photon unique est un objectif fondamental dans le domaine de l'information quantique, ou de l'ordinateur optique à très basse puissance. Un émetteur quantique constitué d'un unique système à deux niveaux est un milieu très non-linéaire, pour lequel l'interaction avec un photon peut modifier la transmission d'un photon suivant. Dans ce scenario, le défi pour obtenir une telle non-linéarité géante est d'optimiser l'interaction lumière matière. Une solution à ce défi est d’insérer l'émetteur quantique dans une structure photonique. Ce système e

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48

Sawangtong, Panumart. "Blow-up pour des problèmes paraboliques semi-linéaires avec un terme source localisé." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2010. http://tel.archives-ouvertes.fr/tel-00833171.

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On étudie l'existence de 'blow-up' et l'ensemble des points de 'blow-up' pour une équation de type chaleur dégénérée ou non avec un terme source uniforme fonction non linéaire de la température instantanée en un point fixé du domaine. L'étude est conduite par les méthodes d'analyse classique (fonction de Green, développements en fonctions propres, principe du maximum) ou fonctionnelle (semi-groupes d'opérateurs linéaires).

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49

Oswald, Luc. "Etude de problemes non lineaires avec singularites." Paris 6, 1987. http://www.theses.fr/1987PA066060.

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Cette these est composee de dix articles que nous avons regroupes en deux parties. La premiere partie est constituee par l'etude et la classification des singularites isolees, premierement, d'une equation elliptique avec diffusion, deuxiemement, de l'equation parabolique correspondante. Dans la seconde partie sont etablis des resultats d'existence pour des problemes elliptiques semi-lineaires. Ces problemes sont caracterises respectivement, par une non-linearite singuliere, une condition de neumann degeneree, une non-linearite sous lineaire et, enfin, des exposants de sobolev critiques

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50

This, Kélian. "Extraction semi-paramétrique de l’information issue de spectres gamma." Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG003.

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La spectrométrie gamma est une technique de mesure nucléaire répandue qui peut être utilisée pour détecter une source radioactive, identifier sa composition et quantifier son activité.Un spectre constitue un résultat de mesure brut qui n’est pas interprétable directement. L’analyse du spectre permet d’en extraire l’information utile.Pour répondre à la croissance du besoin de mesures, nous proposons dans ce mémoire une méthode automatique d’analyse des spectres, appelée Model based Full Spectrum Analysis (MFSA), qui permet d’unifier la résolution des différents problèmes d’analyse de spectre.

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