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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

Projective solution of antenna structures assembled from arbitrarily located straight wires.

Chan, Kwok Kee. January 1973 (has links)
No description available.
72

Stochastic heat equations with memory in infinite dimensional spaces

Xie, Shuguang, School of Mathematics, UNSW January 2005 (has links)
This thesis is concerned with stochastic heat equation with memory and nonlinear energy supply. The main motivation to study such systems comes from Thermodynamics, see [85]. The main objective of this work is to study the existence and uniqueness of solutions to such equations and to investigate some fundamental properties of solutions like continuous dependence on initial conditions. In our approach we follow the seminal papers by Da Prato and Clement [10], where the stochastic heat equation with memory is tranformed into an integral equation in a function space and the so-called mild solutions are studied. In the aforementioned papers only linear equations with additive noise were investigated. The main contribution of this work is the extension of this approach to nonlinear equations. Our main tools are the theory of stochastic convolutions as developed in [33] and the theory of resolvent kernels for deterministic linear heat equations with memory, see[10]. Since the solution at time t depends on the whole history of the process up to time t, the resolvent kernel does not define a semigroup of operators in the state space of the process and therefore a ???standard??? theory of stochastic evolution equations as presented in the monograph [33] does not apply. A more delicate analysis of the resolvent kernles and the associated stochastic convolutions is needed. We will describe now content of this thesis in more detail. Introductory Chapters 1 and 2 collect some basic and essentially well known facts about the Wiener process, stochastic integrals, stochastic convolutions and integral kernels. However, some results in Chapter 2 dealing with stochastic convolution with respect to non-homogenous Wiener process are extensions of the existing theory. The main results of this thesis are presented in Chapters 3 and 4. In Chapter 3 we prove the existence and uniqueness of solutions to heat equations with additive noise and either Lipschitz or dissipative nonlinearities. In both cases we prove the continuous dependence of solutions on initial conditions. In Chapter 4 we prove the existence and uniqueness of solutions and continuous dependence on initial conditions for equations with multiplicative noise. The diffusion coefficients defined by unbounded operators are allowed.
73

Numerical solution of some fluid flow problems by boundary integral equation techniques [microform]

Macaskill, Charles Cameron January 1977 (has links)
iv, 135 leaves : tables, graphs ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--Dept. of Applied Mathematics, University of Adelaide, 1979
74

Numerical solution of quadratically non-linear boundary value problems using integral equation techniques : with applications to nozzle and wall flows /

Goh, K. H. M. January 1986 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, 1987. / Includes bibliographical references (leaves 140-142).
75

Splashless ship bows and waveless sterns /

Madurasinghe, M. A. D. January 1986 (has links) (PDF)
Thesis (Ph. D.)--University of Adelaide, Dept. of Applied Mathematics, 1987. / Includes bibliographical references (leaves 70-72).
76

Development and validation of a Method of Moments approach for modeling planar antenna structures

Kulkarni, Shashank D. January 2007 (has links)
Dissertation (Ph.D.)--Worcester Polytechnic Institute. / Keywords: patch antennas; volume integral equation (VIE); method of moments (MoM); low order basis functions; convergence. Includes bibliographical references (leaves 169-186 ).
77

Zur Theorie der Dirichletschen Randwertaufgabe zum Operator ²-k⁴ im Innen- und Aussenraum mit der Integralgleichungsmethode

Wickel, Wolfram, January 1973 (has links)
Thesis--Bonn. / Vita. Includes bibliographical references (p. 74-75).
78

Zur Theorie der Dirichletschen Randwertaufgabe zum Operator ²-k⁴ im Innen- und Aussenraum mit der Integralgleichungsmethode

Wickel, Wolfram, January 1973 (has links)
Thesis--Bonn. / Vita. Includes bibliographical references (p. 74-75).
79

Numerical methods for Volterra integral equations with applications to certain boundary value problems

Linz, Peter. January 1968 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
80

The generalized dressing method and algebra curves method and their applications to integrable equations /

Su, Ting. January 2009 (has links) (PDF)
Thesis (Ph.D.)--City University of Hong Kong, 2009. / "Submitted to Department of Mathematics in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves 157-176)

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