Thesis (M. Med. Sc.)--University of Hong Kong, 2008. / Includes bibliographical references (p. 35-37).

A lower limb prosthesis provides assistance to its user in both ambulation and stationary support. The lower limb prosthesis consists of a socket, which interfaces with the residual limb, a pylon, attachment hardware to secure the pylon to the socket, and a prosthetic foot. For the prosthesis to be effective, the socket must be comfortable, functional and aesthetically appealing, usually in that order. Lack of comfort and fit can cause movement problems and health issues. The residual limb of the amputee changes its volume throughout the day and in order to maintain comfort a socket must be able to adapt to these volume changes. Previous research has resulted in the development of concepts for inflatable prosthetic sockets capable of addressing this need. The concepts rely on laser sintering (LS) to manufacture the parts. This research focuses on the development of a finite element analysis (FEA) method to assist in the design of adaptive sockets. The FEA can be used to predict the pressure-deflection curve of a given socket design. The FEA method was verified by experiments using LS manufactured test specimens. Results from FEA simulations indicate that the LS-manufactured sockets will achieve the desired deflection (~0.1 in) for relatively low pressures (< 10 psi), providing evidence for the feasibility of this approach. / text

published_or_final_version / Anatomy / Master / Master of Medical Sciences

published_or_final_version / Medical Sciences / Master / Master of Medical Sciences

Thesis (M. Med. Sc.)--University of Hong Kong, 2005.

published_or_final_version / Dental Surgery / Master / Master of Dental Surgery

Master of Science / Department of Electrical and Computer Engineering / Dwight D. Day / Process migration is a technique in clustering and distributed computing by which parallel applications can be dynamically moved between nodes in a cluster in response to differing phases of execution, which is of growing usefulness in the field of distributed computing. A drawback to many recent implementations of process migration is that sockets for interprocess communication do not migrate with the process requiring communication to be rerouted through the process' starting, or home, node, resulting in reduced communications performance when the process is migrated away from its home node. This thesis focuses on the implemention a solution to this problem at the kernel level for the OpenMosix process migration system with efficient socket handoff and cluster-wide unique addressing by reimplemting TCP on top of the existing network code in the Linux kernel. Although falling short of the initial goal of fully transparent operation, this thesis presents a working implementation of migratable sockets for the OpenMosix process migration system that demonstrates working socket migration and improved performance over non-migrating sockets in OpenMosix.

Zugl.: Wien, Techn. Univ., Diplomarbeit, 2005

Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.

No description available.