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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.
251

VLSI implementation of multidimensional discrete Fourier transform and discrete cosine transform /

Yu, Sungwook, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 117-125). Available also in a digital version from Dissertation Abstracts.
252

Fast Fourier Transform implementation using Field Programmable Gate Array technology for Orthogonal Frequency Division Multiplexing systems

Lolla, Rama Krishna. January 2002 (has links)
Thesis (M.S.)--University of Florida, 2002. / Title from title page of source document. Includes vita. Includes bibliographical references.
253

SAR processing direct spectrum formation and image reconstruction /

Hong, Quanhua Claire. January 1998 (has links)
Thesis (M. Sc.)--York University, 1998. Graduate Programme in Earth and Space Science. / Typescript. Includes bibliographical references (leaves 111-114). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ42575.
254

Spectrum analysis using time domain fourier filter outputs to improve FFT estimates /

Chan, Siu-hung. January 1988 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1989.
255

Fourier-cosine method for insurance risk theory

Chau, Ki-wai, 周麒偉 January 2014 (has links)
In this thesis, a systematic study is carried out for effectively approximating Gerber-Shiu functions under L´evy subordinator models. It is a hardly touched topic in the recent literature and our approach is via the popular Fourier-cosine method. In theory, classical Gerber-Shiu functions can be expressed in terms of an infinite sum of convolutions, but its inherent complexity makes efficient computation almost impossible. In contrast, Fourier transforms of convolutions could be evaluated in a far simpler manner. Therefore, an efficient numerical method based on Fourier transform is pursued in this thesis for evaluating Gerber-Shiu functions. Fourier-cosine method is a numerical method based on Fourier transform and has been very popular in option pricing since its introduction. It then evolves into a number of extensions, and we here adopt its spirit to insurance risk theory. In this thesis, the proposed approximant of Gerber-Shiu functions under an L´evy subordinator model has O(n) computational complexity in comparison with that of O(n log n) via the usual numerical Fourier inversion. Also, for Gerber-Shiu functions within the proposed refined Sobolev space, an explicit error bound is given and error bound of this type is seemingly absent in the literature. Furthermore, the error bound for our estimation can be further enhanced under extra assumptions, which are not immediate from Fang and Oosterlee’s works. We also suggest a robust method on the estimation of ruin probabilities (one special class of Gerber-Shiu functions) based on the moments of both claim size and claim arrival distributions. Rearrangement inequality will also be adopted to amplify the use of our Fourier-cosine method in ruin probability, resulting in an effective global estimation. Finally, the effectiveness of our result will be further illustrated in a number of numerical studies and our enhanced error bound is apparently optimal in our demonstration; more precisely, empirical evidence exhibiting the biggest possible error convergence rate agrees with our theoretical conclusion. / published_or_final_version / Mathematics / Master / Master of Philosophy
256

Shape analysis

黃美香, Wong, Mee-heung, Cecilia. January 1994 (has links)
published_or_final_version / Statistics / Master / Master of Philosophy
257

Spectrum analysis using time domain fourier filter outputs to improve FFT estimates

陳銚鴻, Chan, Siu-hung. January 1988 (has links)
published_or_final_version / Mechanical Engineering / Master / Master of Philosophy
258

Modal parameter identification for non-linear systems using the time-domain fourier filter output method

陶冬玲, Tao, Dong-ling. January 1997 (has links)
published_or_final_version / Mechanical Engineering / Doctoral / Doctor of Philosophy
259

Coherent image formation applied to the design of Fourier transform elements

Fritz, Bernard Steven January 1980 (has links)
No description available.
260

Digital filters for signal processing in fourier transform spectroscopy

Yeh, Jung-Hsiang January 1981 (has links)
No description available.

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