The basic notion embodied in sweeping schemes is simple. A set moving through space may trace or sweep out volume (a solid) that may be represented by the moving set and its trajectory. Such a representation is important in the context of applications such as detecting the material removed from a cutter as it moves along a specified trajectory, computing dynamic interference of two solids undergoing relative motion, motion planning, and even in computer graphics applications such as tracing the motions of a brush moved on a canvas. Most commercial CAD systems provide (limited) functionality for constructing swept solids mostly in the form of a two dimensional cross section moving on a space trajectory transversal to the section. However, current research has shown several approximations of three dimensional shapes moving across one parameter, and even multi-parameter motions.
Welcome to the School of Graduate and Postdoctoral Studies' Electronic Theses & Dissertation site. These pages are dedicated to help you find all the information you might require in order to format and successfully submit your graduate thesis for examination and publication electronically.
Electronic Theses and Dissertations (ETDs) are prepared as text-based PDF files. ETDs can contain non-text elements such as sound, video, and hypertext links. ETDs are available through [email protected], Western's digital library repository, and also released to the world-wide web with priority in many search engines, enabling scholars worldwide to locate, search, and download the University of Western Ontario's ETDs.
PhD candidates ought to carefully consider whether they have sufficient cause to embargo their dissertation given the possible costs of this course of action. As I detail above, many professional benefits can stem from releasing one’s dissertation online, especially in an open access forum. In contrast, as the University of California-Berkeley argued in a December 2013 memo , “The potential disadvantages of releasing the dissertation at the time of deposit, or after a short embargo, remain anecdotal.” While UC-Berkeley’s position is largely substantiated by my research, there are a few specific circumstances under which an embargo might be helpful.