Thesis (Ph.D.)--University of Nebraska-Lincoln, 2007. / Title from title screen (site viewed July 9, 2007). PDF text: 118 p. : ill. UMI publication number: AAT 3252834. Includes bibliographical references. Also available in microfilm and microfiche formats.

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Washington, 2007. / Vita. Includes bibliographical references (p. 131-141).

Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.

by Milton B. Adams, Bernard C. Levy, Alan S. Willsky. / Bibliography: leaf [4]. / Caption title. "August 1983." / Supported by the National Science Foundation under Grant ECS-8012668

by Milton B. Adams, Alan S. Willsky, Bernard C. Levy. / "November, 1982." / Includes bibliographical references. / National Science Foundation Grant ECS-8012668

Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (p. 101-104).

Orientadores: Luis Adauto da Justa Medeiros, Cicero Lopes Frota / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica / Made available in DSpace on 2018-08-15T22:02:49Z (GMT). No. of bitstreams: 1 Vicente_Andre_D.pdf: 1601473 bytes, checksum: 8d8834d3fb9f839045ab52e1a9f4887e (MD5) Previous issue date: 2010 / Resumo: Neste trabalho estudamos a resolubilidade de alguns problemas de valores iniciais e de fronteira, envolvendo equações de ondas com Condições de Fronteira da Acústica. Inicialmente, provamos a existência e unicidade de solução para dois problemas com a formulação clássica, introduzida por Beale e Rosencrans [5] (considerando que a fronteira é localmente reagente). Posteriormente provamos resultados para problemas envolvendo uma formulação das condições de fronteira em que consideramos o caso de fronteira não localmente reagente. Para os resultados de existência de solução usamos o método construtivo de Faedo-Galerkin e argumentos de compacidade. Resultados sobre o decaimento de solução baseiam-se no método de Nakao. / Abstract: In this work we study the resolubility of some problems for wave equations with Acoustic Boundary Conditions. Firstly, we prove the existence and uniqueness of solution for two problems with classical formulation due to Beale and Rosencrans [5] (considering locally reacting boundary). After we prove some results to initial boundary value problems for no locally reacting boundaries. The results on the existence of solutions were obtained by using the constructive Faedo-Galerkin's method and compactness arguments. Results on the asymptotic behavior of solutions was given by Nakao's method. / Doutorado / Analise / Doutor em Matemática Aplicada

No description available.

The thesis is concerned with techniques for realizing optimum control that are suited for analogue computers. The first half of the thesis develops an iterative scheme for the solution of the two point boundary value problem. The theory of the iterative scheme is covered in detail and the scheme is implemented on an analogue computer. Studies of the scheme have also been made using a digital computer. The iterative scheme can be modified to cope with constraints on the control law. These modifications have been tested on a digital computer. The latter half of the thesis is concerned with approximation techniques which produce, very simple controllers. These techniques require a large digital computer, such as the IBM 7040, to do the design calculations. The first approximation technique developed from the calculus of variations is covered in detail including a complete controller designed and simulated. The second approximation technique based on dynamic programming is discussed and a few points are made about the features of the controller. / Applied Science, Faculty of / Electrical and Computer Engineering, Department of / Graduate