No description available.

The simulation of diffractive optical structures allows for the efficient testing of a large number of structures without having to actually fabricate these devices. Various forms of analysis of these structures have been done through computer programs in the past. However, programs that can actually design a structure to perform a given task are very limited in scope. Optimization of a structure can be a task that is very processor time intensive, particularly if the optimization space has many dimensions. This thesis describes the creation of a computer program that is able to find an optimal structure while maintaining a low-dimensional search space, thus greatly reducing the processor time required to find the solution. The program can design the optimal structure for a wide variety of planar optical devices that conform to the weakly-guiding approximation with an efficient code that incorporates the low-dimensional search space concept. This work is the first use of an electromagnetic field solver inside of an optimization loop for the design of an optimized diffractive-optic structure.

by Wong Kam Chau. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1990. / Bibliography: leaves 114-121. / Introduction: --- p.1 / Outline of the thesis: --- p.9 / Part I: / List of notations: --- p.12 / Chapter Chapter I: --- Basic model --- p.16 / Chapter Chapter II： --- Self-interested team --- p.21 / Chapter Chapter III --- Altruistic team --- p.33 / Chapter Chapter IV: --- Sub-contracting and supervisory system --- p.45 / Chapter Chapter V: --- Team with leader --- p.55 / Chapter Chapter VI: --- Conclusion of part I --- p.59 / Appendix: --- p.61 / Part II: / Chapter Chapter VII --- The existence theorem of optimal information system of one agent --- p.82 / Chapter Chapter VIII: --- Extension to a team --- p.104 / Reference: --- p.114

Thesis (Ph.D.)--University of Delaware, 2007. / Principal faculty advisor: Jian-Qiao Sun, Dept. of Mechanical Engineering. Includes bibliographical references.

This thesis discusses how to use topology and shape optimization, specifically the level set method, for innovative design. The level set method is a numerical algorithm that simulates the expansion of dynamic implicit surfaces. In this research, the equations for manufacturability are generated and solved through use of the level set method joined with the COMSOL multi-physics package. Specific constraints are added to make the optimization practical for engineering design. The resulting method was applied to design the best underlying support structure, conforming to both curvature and manufacturability constraints, for the longerons used with the International Space Station solar panels.

Thesis (M.S.)--Brigham Young University. Dept. of Mechanical Engineering, 2003. / Includes bibliographical references (p. 53-56).

No description available.

Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references (leaves 216-237). Also available in electronic version.

Thesis (M.S.)--University of Texas at Dallas, 2008. / Includes vita. Includes bibliographical references (leaves 119-120)

Thesis (Ph. D.)--University of Sydney, 2002. / Title from title screen (viewed Apr. 28, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Aeronautical, Mechatronic and Mechanical Engineering. Includes bibliographical references. Also available in print form.