Thesis (Ph. D.)--Rutgers University, 2008. / "Graduate Program in Computer Science." Includes bibliographical references (p. 89-95).

Thesis (Ed. D.)--Texas Tech University, 1976. / Bibliography: leaves 88-93.

Thesis (Ed. D.)--Texas Tech University, 1976. / Includes bibliographical references (leaves 88-93).

The purpose of this study was to determine if obese patients have a different sensory regression time from subarachnoid block than non-obese patients using hyperbaric 0.75% bupivacaine. A quasi-experimental design was used. Twenty patients were separated into two groups; one group was classified as obese, and the other group was classified as non-obese. The data consisting of age, height, weight, sex, and surgical procedure were recorded preoperatively. All the patients received hyperbaric 0.75% bupivacaine via subarachnoid puncture. The levels of spinal anesthesia were recorded at the highest level achieved. The injection time was also recorded. When the surgery was completed, the patient was transferred to the recovery room and levels of sensory blockade were checked by pin-prick with an 18-gauge needle every 10 minutes until complete recovery from the spinal anesthesia had been achieved. The hypothesis, there will be no difference in sensory regression time from SAB with hyperbaric 0.75% bupivacaine between obese and non-obese patients, failed to be rejected. No statistically significant difference, using linear regression analysis, was found in mean regression time between groups (obese versus non-obese).

Seven orthopedic surgery patients requiring the use of a tourniquet were studied. The hypothesis stated that tourniquet application does not affect coagulation. A total of 5 blood samples were drawn perioperatively (preoperative, 5 minutes after induction of anesthesia, 30 minutes after tourniquet inflation, 2 - 5 minutes after tourniquet deflation, and 30 minutes after tourniquet deflation. For each sample, TEG parameters (R, R + k, MA and α) were measured. The value for each TEG parameter was compared by analysis of variance (ANOVA), then the samples were contrasted and examined by repeated measures ANOVA. None of the TEG parameters showed a statistically significant difference in the blood samples before, during or after tourniquet application. The hypothesis could not be rejected at the α = .05 level of significance. A t test was used to examine the effect of anesthesia on coagulation. The TEG parameters indicated a significant relationship between the TEG values R and R + k, and a near significant relationship between TEG values MA and a and the administration of anesthesia. It was concluded that tourniquet use does not effect coagulation when applied 2 hours or less. However, anesthesia had a significant effect on TEG parameters R and R + k. The clinical significance of this effect was questionable since the type of anesthesia varied in some patients, and none of the patients in the study demonstrated symptoms of coagulopathy.

Team Shoshin is an extension of Shoshin, a testbed for distributed software developed at the University of Waterloo. Part of the functionality of Shoshin can be attributed to its transparent treatment of remote interprocess communication. This is accomplished by having a special system process, the communications manager, handle the exchange of messages between machines. Shoshin's new hardware environment is significantly different from what it was originally designed on. This thesis describes the problems the new hardware presented and how those problems were overcome. Performance measurements of the time required for both local and remote message exchanges are made and compared. Using this empirical data, a simple model of the remote message exchange protocol is developed to try and determine how to improve performance. The software and hardware enhancements made to Shoshin have resulted in an improvement in system interprocess communication performance by a factor of four. Finally as a demonstration of Shoshin's interprocess communications facilities a simple UNIX based file server is implemented. / Science, Faculty of / Computer Science, Department of / Graduate

No description available.

This thesis is part of the European MANY project. The goal of MANY is to provide developers with tools to develop software for multi and many-core hardware platforms. This is the first thesis that is part of MANY at Enea. The thesis aims to provide a knowledge base about software on many-core at the Enea student research group. More than just providing a knowledge base, a part of the thesis is also to port Enea's operating system OSE to Tilera's many-core processor TILEpro64. The thesis shall also investigate the memory hierarchy and interconnection network of the Tilera processor. The knowledge base about software on many-core was constrained to investigating the shared memory model and operating systems for many-core. This was achieved by investigating prominent academic research about operating systems for many-core processors. The conclusion was that a shared memory model does not scale and for the operating system case, operating systems shall be designed with scalability as one of the most important requirements. This thesis has implemented the hardware abstraction layer required to execute a single-core version of OSE on the TILEpro architecture. This was done in three steps. The Tilera hardware and the OSE software platform were investigated. After that, an OSE target port was chosen as reference architecture. Finally, the hardware dependent parts of the reference software were modified. A foundation has been made for future development.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

No description available.