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Thematische Bibliographien / Lagrangian functions / Dissertationen

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Dissertationen zum Thema „Lagrangian functions“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 1. August 2024

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1

Brown, Jeffrey W. "Lagrangian field observations of rip currents." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 133 p, 2008. http://proquest.umi.com/pqdweb?did=1633772921&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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2

Lai, Shih-yih. "Lagrangian relaxation and discrete optimization problems /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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3

Hare, Warren L. "The Quadratic Sub-Lagrangian of prox-regular functions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ60128.pdf.

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4

Yolcu, Türkay. "Parabolic systems and an underlying Lagrangian." Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29760.

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Thesis (Ph.D)--Mathematics, Georgia Institute of Technology, 2010.<br>Committee Chair: Gangbo, Wilfrid; Committee Member: Chow, Shui-Nee; Committee Member: Harrell, Evans; Committee Member: Swiech, Andrzej; Committee Member: Yezzi, Anthony Joseph. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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5

Zhou, Long. "Mesoscale variability and Lagrangian statistics in the tropical North Atlantic /." View online ; access limited to URI, 2009. http://digitalcommons.uri.edu/dissertations/AAI3401129.

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6

Uygun, Adnan. "Network interdiction by Lagrangian relaxation and branch-and-bound." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FUygun.pdf.

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7

Song, Qiang. "Non-euler-lagrangian pareto-optimality conditions for dynamic multiple-criterion decision problems." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/24920.

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8

Yolcu, Türkay. "Parabolic systems and an underlying Lagrangian." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29760.

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In this thesis, we extend De Giorgi's interpolation method to a class of parabolic equations which are not gradient flows but possess an entropy functional and an underlying Lagrangian. The new fact in the study is that not only the Lagrangian may depend on spatial variables, but also it does not induce a metric. Assuming the initial condition is a density function, not necessarily smooth, but solely of bounded first moments and finite "entropy", we use a variational scheme to discretize the equation in time and construct approximate solutions. Moreover, De Giorgi's interpolation method is rev

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9

Silverberg, Jon P. "On Lagrangian meshless methods in free-surface flows." Thesis, (1.7 MB), 2005. http://edocs.nps.edu/AR/topic/theses/2005/Jan/05Jan_Silverberg.pdf.

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Thesis (Master of Engineering in Ocean Engineering)--University of California at Berkeley, 2004.<br>"January 2005." Description based on title screen as viewed on May 25, 2010. DTIC Descriptor(s): Fluid Dynamics, Lagrangian Functions, Equations Of Motion, Acceleration, Formulations, Grids, Continuum Mechanics, Gaussian Quadrature, Derivatives (Mathematics), Compact Disks, Boundary Value Problems, Polynomials, Interpolation, Pressure, Operators (Mathematics). DTIC Identifier(s): Multimedia (CD-Rom), Moving Grids, Meshless Discretization, Lifs (Lagrange Implicit Fraction Step), Lagrangian Dynami

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Almesallmy, Mohammed. "Experimental and analytical investigation of inertial propulsion mechanisms and motion simulation of rigid-multi-body mechanical systems /." View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/3239899.

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11

Lee, Chun Hean. "Development of a cell centred upwind finite volume algorithm for a new conservation law formulation in structural dynamics." Thesis, Swansea University, 2012. https://cronfa.swan.ac.uk/Record/cronfa42726.

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Over the past few decades, dynamic solid mechanics has become a major field of interest in industrial applications involving crash simulation, impact problems, forging and many others to be named. These problems are typically nonlinear due to large deformations (or geometrical nonlinearity) and nonlinear constitutive relations (or material nonlinearity). For this reason, computer simulations for such problems are of practical importance. In these simulations, the Lagrangian formulation is typically used as it automatically satisfies the mass conservation law. Explicit numerical methods are con

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12

Choi, Gyunghyun. "Nondifferentiable optimization algorithms with application to solving Lagrangian dual problems." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/38657.

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13

Hall, Bryan, University of Western Sydney, and of Science Technology and Environment College. "Energy and momentum conservation in Bohm's Model for quantum mechanics." THESIS_CSTE_XXX_Hall_B.xml, 2004. http://handle.uws.edu.au:8081/1959.7/717.

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Bohm's model for quantum mechanics is examined and a well-known drawback of the model is considered, namely the fact that the model does not conserve energy and momentum.It is shown that the Lagrangian formalism and the use of energy-momentum tensors provide a way of addressing this non-conservation aspect once the model is considered from the point of view of an interacting particle-field system. The full mathematical formulation that is then presented demonstrates that conservation can be reintroduced without disrupting the present agreement of Bohm's model with experiment.<br>Doctor of Phil

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14

Morales-Silva, Daniel. "G-coupling functions and properties of strongly star-shaped cones." Thesis, University of Ballarat, 2009. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/34661.

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The main part of this thesis presents a new approach to the topic of conjugation, with applications to various optimization problems. It does so by introducing (what we call) G-coupling functions.<br>Doctor of Philosophy

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Hall, Bryan. "Energy and momentum conservation in Bohm's Model for quantum mechanics." Thesis, View thesis, 2004. http://handle.uws.edu.au:8081/1959.7/717.

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Bohm's model for quantum mechanics is examined and a well-known drawback of the model is considered, namely the fact that the model does not conserve energy and momentum.It is shown that the Lagrangian formalism and the use of energy-momentum tensors provide a way of addressing this non-conservation aspect once the model is considered from the point of view of an interacting particle-field system. The full mathematical formulation that is then presented demonstrates that conservation can be reintroduced without disrupting the present agreement of Bohm's model with experiment.

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Leijon, Rasmus. "On the geometry of calibrated manifolds : with applications to electrodynamics." Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-80675.

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In this master thesis we study calibrated geometries, a family of Riemannian or Hermitian manifolds with an associated differential form, φ. We show that it isuseful to introduce the concept of proper calibrated manifolds, which are in asense calibrated manifolds where the geometry is derived from the calibration. In particular, the φ-Grassmannian is considered in the case of proper calibratedmanifolds. The impact of proper calibrated manifolds as a model is studied, aswell as the usefulness of pluripotential theory as tools for the model. The specialLagrangian calibration is an example of an

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17

Sun, Xiaoqing. "A modified shifting bottleneck approach to job shop scheduling with sequence dependent setups (MSBSS) /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9841187.

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18

Chen, Hong. "Mechanisms and modelling of landslides in Hong Kong /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21375513.

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19

Hall, Bryan. "Energy and momentum conservation in Bohm's Model for quantum mechanics." View thesis, 2004. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20040507.155043/index.html.

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20

Devkota, Bishnu Hari. "A new Lagrangian model for the dynamics and transport of river and shallow water flows." University of Western Australia. Centre for Water Research, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0108.

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This study presents a new Lagrangian model for predicting dynamics and transport in rivers and shallow water flows. A hydrostatic model is developed for the prediction of rivers and floodplain flow and lateral interactions between them. The model is extended to the Boussinesq weakly non-linear, non-hydrostatic model for the simulation of solitary waves and undular bores. A model for advection-diffusion transport of tracers in open channel flow is also presented. The simulation results are compared against an analytical solution and published laboratory data, field data and theoretical results.

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21

Huang, Lingyan. "Mass transport due to surface waves in a water-mud system." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B35380457.

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22

Huang, Lingyan, and 黃凌燕. "Mass transport due to surface waves in a water-mud system." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B35380457.

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23

Dewasurendra, Lohitha. "A finite element method for ring rolling processes." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1175098096.

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24

Lambert, Alex. "Learning function-valued functions in reproducible kernel Hilbert spaces with integral losses : Application to infinite task learning." Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAT016.

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Les méthodes à noyaux sont au coeur de l'apprentissage statistique. Elles permettent de modéliser des fonctions à valeurs réelles dans des espaces de fonctions à fort potentiel représentatif, sur lesquels la minimisation de risques empiriques régularisés est possible et produit des estimateurs dont le comportement statistique est largement étudié. Lorsque les sorties ne sont plus réelles mais de plus grande dimension, les Espaces de Hilbert à Noyaux Reproduisants à valeurs vectorielles (vv-RKHSs) basés sur des Noyaux à Valeurs Opérateurs (OVKs) fournissent des espaces de fonctions similaires e

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25

Stay, Justin L. "Multi-beam-interference-based methodology for the fabrication of photonic crystal structures." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31783.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Thomas K. Gaylord; Committee Member: Donald D. Davis; Committee Member: Gee-Kung Chang; Committee Member: Muhannad S. Bakir; Committee Member: Phillip N. First. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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26

Chen, Hong, and 陳虹. "Mechanisms and modelling of landslides in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31239948.

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27

Goncalves, Juliana Bittencourt. "EMPREGO DE UM MODELO DE DISPERSÃO TURBULENTO NO ESTUDO DA UNIVERSALIDADE DA TAXA DE DISSIPAÇÃO DA ENERGIA." Universidade Federal de Santa Maria, 2010. http://repositorio.ufsm.br/handle/1/10254.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>This study employed different autocorrelation functions and Maclaurin series expansions in the derivation of expressions describing the dissipation rate of turbulent kinetic energy. These expressions have the same functional form, but are described in terms of different numerical coefficients. The values obtained for the numerical coefficients were used in a Lagrangian stochastic dispersion model to simulate the dispersion of contaminants in the Planetary Boundary Layer (PBL). The simulation results were compared with concentrati

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Flores, Callisaya Hector 1980. "Empacotamento em quadráticas." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307468.

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Orientador: José Mario Martínez Pérez<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica<br>Made available in DSpace on 2018-08-20T05:08:42Z (GMT). No. of bitstreams: 1 FloresCallisaya_Hector_D.pdf: 2324904 bytes, checksum: e15e7624ccad0fdf64ce3c4d8095c20a (MD5) Previous issue date: 2012<br>Resumo: Neste trabalho, serão propostos modelos matemáticos para problemas de empacotamento não reticulado de esferas em regiões limitadas por quadráticas no plano e no espaço. Uma técnica para construir representações ou parametrizações s

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Silva, Leandro Tavares da. "Simulação de fluidos via Smoothed Particle Hydrodynamics: formulação variacional, variação de parâmetros e extração de características visuais." Laboratório Nacional de Computação Científica, 2016. https://tede.lncc.br/handle/tede/240.

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Submitted by Maria Cristina (library@lncc.br) on 2017-03-14T15:05:16Z No. of bitstreams: 1 tese_lncc_LEANDRO_TAVARES.pdf: 29698763 bytes, checksum: 86bf9653aed054e6fdf52b75fb82a03d (MD5)<br>Approved for entry into archive by Maria Cristina (library@lncc.br) on 2017-03-14T15:06:11Z (GMT) No. of bitstreams: 1 tese_lncc_LEANDRO_TAVARES.pdf: 29698763 bytes, checksum: 86bf9653aed054e6fdf52b75fb82a03d (MD5)<br>Made available in DSpace on 2017-03-14T15:06:31Z (GMT). No. of bitstreams: 1 tese_lncc_LEANDRO_TAVARES.pdf: 29698763 bytes, checksum: 86bf9653aed054e6fdf52b75fb82a03d (MD5) Previous iss

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Penachi, Rian 1989. "Uma introdução à otimização não linear e a solução de problemas simétricos via ALGENCAN." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307618.

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Orientador: Luis Felipe Cesar da Rocha Bueno<br>Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Instituto de Matemática Estatística e Computação Científica<br>Made available in DSpace on 2018-08-27T11:37:25Z (GMT). No. of bitstreams: 1 Penachi_Rian_M.pdf: 10723936 bytes, checksum: ee5a52edf4287fdd199dc8efff4b5869 (MD5) Previous issue date: 2015<br>Resumo: Este trabalho propõe uma abordagem didática acerca de otimização não linear irrestrita e com restrições de igualdade, assim como um guia para o leitor que necessita instalar e utilizar o software ALGENCAN. Prezando

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Baptista, Edméa Cássia. "Método da função Lagrangiana aumentada-barreira logarítmica para a solução do problema de fluxo de potência ótimo." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-14102015-111239/.

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Neste trabalho propomos uma abordagem para a resolução do problema de fluxo de potência ótimo. Para isso, foram obtidos dados teóricos, a partir de um levantamento bibliográfico, que explicitaram os métodos de penalidade, de barreira, de Newton-Lagrangiano, da função Lagrangiana aumentada e dual-Lagrangiano. Nesta abordagem, as restrições de igualdade são tratadas pelo método de Newton, as restrições canalizadas, de tensão e tap, pelo método da função barreira logarítmica, e as restrições de desigualdade e demais restrições canalizadas, pelo método da função Lagrangiana aumentada. A motivaç

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Hesse, Michel. "Méthode des réseaux de Lagrange en mécanique quantique." Doctoral thesis, Universite Libre de Bruxelles, 2001. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211475.

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<p align="justify">Les fonctions de Lagrange sont des fonctions indéfiniment dérivables qui s'annulent en tous les points d'un réseau sauf un. Ces fonctions sont utilisées comme fonctions de base d'un calcul variationnel. Les éléments de matrice de ce calcul sont évalués à l'aide de la règle de quadrature de Gauss définie par le réseau de points. Les équations à résoudre prennent ainsi la forme d'équations sur réseau.</p><p><p align="justify">La méthode des réseaux de Lagrange allie simplicité et précision. La matrice représentant le potentiel est diagonale et ne dépend que des valeurs prises

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Weerasinghe, Weerasinghe Mudalige Sujith Rohitha. "Application of Lagrangian probability density function approach to turbulent reacting flows." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392476.

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Madabushi, Ananth R. "Lagrangian Relaxation / Dual Approaches For Solving Large-Scale Linear Programming Problems." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36833.

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This research effort focuses on large-scale linear programming problems that arise in the context of solving various problems such as discrete linear or polynomial, and continuous nonlinear, nonconvex programming problems, using linearization and branch-and-cut algorithms for the discrete case, and using polyhedral outer-approximation methods for the continuous case. These problems arise in various applications in production planning, location-allocation, game theory, economics, and many engineering and systems design problems. During the solution process of discrete or continuous nonconvex pr

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Martinez, Andre Luis Machado. "Metodo lagrangiano aumentado regularizado para problemas com voracidade." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307459.

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Orientador: Jose Mario Martinez Perez<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-08-13T12:07:27Z (GMT). No. of bitstreams: 1 Martinez_AndreLuisMachado_D.pdf: 1457053 bytes, checksum: 6d70bba5dd246c0212765142b6451a5d (MD5) Previous issue date: 2009<br>Resumo: Quando resolvemos problemas de programação não linear por meio de algoritmos que utilizam o Lagrangiano Aumentado, um fenômeno chamado voracidade pode ocorrer. Quando isto ocorre o método busca pontos muito infactíveis com valor

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Zeferino, Cristiane Lionço. "Estudo do máximo carregamento em sistemas de energia elétrica via método da barreira modificada." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-08032007-113530/.

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Nesta dissertação é aplicado o método da função Lagrangiana barreira modificada (FLBM), uma variante do método de pontos interiores, para determinação do máximo carregamento em sistemas de energia elétrica. A formulação do problema tem como restrições de igualdade as equações de balanço de potência do sistema, em sua forma parametrizada, e como restrições de desigualdade os limites de tensões nas barras e os limites de geração de potência reativa nas barras com controle de reativo. Os resultados encontrados com a técnica de otimização estática utilizada neste estudo são confrontados com os res

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Sadjadi, Seyed Jafar. "Nonlinear programming using an expanded Lagrangian function, a water resources management case study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0014/NQ30640.pdf.

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Nascimento, Clebea Araújo. "Abordagem do problema de fluxo de potência ótimo por métodos de programação não-linear via penalidade quadrática e Função Lagrangeana Aumentada." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-22012018-113127/.

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Neste trabalho são estudadas três metodologias de otimização não-linear: o Método da Função Lagrangeana, o Método da Função Penalidade e o Método da Função Lagrangeana Aumentada. Com o estudo da Função Lagrangeana e do Método da Função Penalidade, foi possível alcançar a formulação da Função Lagrangeana Aumentada com o objetivo de resolver problemas de programação não-linear não-convexos. Testes numéricos são apresentados para o problema não-convexo de programação não-linear conhecido como Fluxo de Potência Ótimo.<br>In this dissertation, three nonlinear optimization methodologies are studied:

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Poletto, Vinicius Gustavo. "Modelagem e simulação numérica da deposição de partículas em meio poroso: um estudo da formação de reboco durante a perfuração de poços de petróleo." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2989.

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O fenômeno de perda de circulação é consequência da perfuração de poços de petróleo e gás em substratos permeáveis e é caracterizado pelo influxo de fluido de perfuração da região anular para a formação. Além dos custos adicionais relacionados com a necessidade constante de reposição do fluido perdido, danos à formação nas adjacências do poço são de ocorrência comum. Uma potencial solução é a adição de materiais de perda de circulação (LCM’s) ao fluido de perfuração para que uma camada de reboco se forme na parede do poço em filtração dinâmica. Neste trabalho, o escoamento bifásico líquido-sól

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Masiero, Maria Cláudia Sávio. "O método da função lagrangiana aumentada barreira modificada para a resolução do fluxo de potência ótimo /." Bauru : [s.n.], 2011. http://hdl.handle.net/11449/87202.

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Orientador: Edméa Cássia Baptista<br>Banca: Vanusa Alves de Sousa<br>Banca: Leonardo Nepomuceno<br>Resumo: Este trabalho propõe uma abordagem que utiliza uma associação dos métodos de barreira modificada e da Lagrangiana aumentada para a resolução do problema de fluxo de potência ótimo. Para isso, foi realizado um levantamento bibliográfico que explicitou os métodos de Newton-Lagrangiano, de barreira modificada e da função lagrangiada aumentada. Na abordagem proposta, as restrições canalizadas são desmembradas em duas desigualdades. Estas são transformadas em igualdades a partir do acréscimo d

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Castelani, Emerson Vitor. "Um metodo do tipo lagrangiano aumentado com região de confiança." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/307457.

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Orientador: Jose Mario Martinez Perez<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-08-13T22:53:44Z (GMT). No. of bitstreams: 1 Castelani_EmersonVitor_D.pdf: 695936 bytes, checksum: 9434e07a75cde154320a5156daf73684 (MD5) Previous issue date: 2009<br>Resumo: Ao resolver problemas de programação não linear usando métodos do tipo Lagrangiano Aumentado, um fenômeno chamado voracidade pode ocorrer. Quando este fenômeno ocorre, o método busca pontos muito infactíveis com valor de função obje

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Manomaiphiboon, Kasemsan. "Estimation of Emission Strength and Air Pollutant Concentrations by Lagrangian Particle Modeling." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5141.

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A Lagrangian particle model was applied to estimating emission strength and air pollutant concentrations specifically for the short-range dispersion of an air pollutant in the atmospheric boundary layer. The model performance was evaluated with experimental data. The model was then used as the platform of parametric uncertainty analysis, in which effects of uncertainties in five parameters (Monin-Obukhov length, friction velocity, roughness height, mixing height, and the universal constant of the random component) of the model on mean ground-level concentrations were examined under slightly

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Mahdavi, Mostafa. "Study of flow and heat transfer features of nanofluids using multiphase models : eulerian multiphase and discrete Lagrangian approaches." Thesis, University of Pretoria, 2016. http://hdl.handle.net/2263/61309.

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Choosing correct boundary conditions, flow field characteristics and employing right thermal fluid properties can affect the simulation of convection heat transfer using nanofluids. Nanofluids have shown higher heat transfer performance in comparison with conventional heat transfer fluids. The suspension of the nanoparticles in nanofluids creates a larger interaction surface to the volume ratio. Therefore, they can be distributed uniformly to bring about the most effective enhancement of heat transfer without causing a considerable pressure drop. These advantages introduce nanofluids as

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Modena, Stefano. "Interaction functionals, Glimm approximations and Lagrangian structure of BV solutions for Hyperbolic Systems of Conservation Laws." Doctoral thesis, SISSA, 2015. http://hdl.handle.net/20.500.11767/4873.

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This thesis is a contribution to the mathematical theory of Hyperbolic Conservation Laws. Three are the main results which we collect in this work. The first and the second result (denoted in the thesis by Theorem A and Theorem B respectively) deal with the following problem. The most comprehensive result about existence, uniqueness and stability of the solution to the Cauchy problem \begin{equation}\tag{$\mathcal C$} \label{E:abstract} \begin{cases} u_t + F(u)_x = 0, \\u(0, x) = \bar u(x), \end{cases} \end{equation} where $F: \R^N \to \R^N$ is strictly hyperbolic, $u = u(t,x) \in \R^N$, $t

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Floratos, Ioannis. "Multi-Skyrmion solutions of a sixth order Skyrme model." Thesis, Durham University, 2001. http://etheses.dur.ac.uk/3988/.

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In this Thesis, we study some of the classical properties of an extension of the Skyrme model defined by adding a sixth order derivative term to the Lagrangian. In chapter 1, we review the physical as well as the mathematical motivation behind the study of the Skyrme model and in chapter 2, we give a brief summary of various extended Skyrme models that have been proposed over the last few years. We then define a new sixth order Skyrme model by introducing a dimensionless parameter λ that denotes the mixing between the two higher order terms, the Skyrme term and the sixth order term. In chapter

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Masiero, Maria Cláudia Sávio [UNESP]. "O método da função lagrangiana aumentada barreira modificada para a resolução do fluxo de potência ótimo." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/87202.

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Made available in DSpace on 2014-06-11T19:22:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-08-18Bitstream added on 2014-06-13T19:28:07Z : No. of bitstreams: 1 masiero_mcs_me_bauru.pdf: 852131 bytes, checksum: f6e923a2b5d5ef7b653f18a36f2f11bf (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Universidade Estadual Paulista (UNESP)<br>Este trabalho propõe uma abordagem que utiliza uma associação dos métodos de barreira modificada e da Lagrangiana aumentada para a resolução do problema de fluxo de potência ótimo. Para isso, foi realizado um levantamento

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Ferreira, Vitor Maciel Vilela. "A hybrid les / lagrangian fdf method on adaptive, block-structured mesh." Universidade Federal de Uberlândia, 2015. https://repositorio.ufu.br/handle/123456789/14982.

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Fundação de Amparo a Pesquisa do Estado de Minas Gerais<br>Esta dissertação é parte de um amplo projeto de pesquisa, que visa ao desenvolvimento de uma plataforma computacional de dinâmica dos fluidos (CFD) capaz de simular a física de escoamentos que envolvem mistura de várias espécies químicas, com reação e combustão, utilizando um método hibrido Simulação de Grandes Escalas (LES) / Função Densidade Filtrada (FDF) Lagrangiana em malha adaptativa, bloco-estruturada. Uma vez que escoamentos com mistura proporcionam fenômenos que podem ser correlacionados com a combustão em escoamentos turbulen

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Zeferino, Cristiane Lionço. "Avaliação e controle de margem de carregamento em sistemas elétricos de potência." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-05052011-091651/.

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Neste trabalho é proposta a determinação do ponto de Máximo Carregamento (PMC) em sistemas elétricos de potência por meio do método da Função Lagrangiana Barreira Modificada (FLBM), uma variante do método de Pontos Interiores (PI). Também por meio do método da FLBM, busca-se determinar qual é a barra, para cada sistema, que apresenta a maior sensibilidade em relação ao fator de carregamento, ou seja, qual seria a primeira barra que deveria sofrer corte de carga a fim de aumentar a margem de carregamento do sistema e, assim, evitar o colapso de tensão. Para comprovação dos resultados obtidos po

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Ozdaryal, Burak. "Exterior Penalty Approaches for Solving Linear Programming Problems." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/33862.

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In this research effort, we study three exterior penalty function approaches for solving linear programming problems. These methods are an active set l2 penalty approach (ASL2), an inequality-equality based l2 penalty approach (IEL2), and an augmented Lagrangian approach (ALAG). Particular effective variants are presented for each method, along with comments and experience on alternative algorithmic strategies that were empirically investigated. Our motivation is to examine the relative performance of these different approaches based on the basic l2 penalty function in order to provide insi

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Vasconcelos, Fillipe Matos de. "Uma abordagem Lagrangiana na otimização Volt/VAr em redes de distribuição." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-06062017-072758/.

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Este projeto de pesquisa propõe desenvolver um novo modelo e uma nova abordagem para a resolução do problema da otimização Volt/VAr em redes de distribuição de energia elétrica. A otimização Volt/VAr consiste em, basicamente, determinar os ajustes das variáveis de controle tais como bancos de capacitores chaveados, transformadores com comutação de tap sob carga e reguladores de tensão, de modo a satisfazer, simultaneamente, as restrições de carga e de operação para um dado objetivo operacional. Esse problema, matematicamente, foi formulado como um problema de programação não linear, multiperío

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