Thesis (Ph. D.)--University of Wisconsin--Madison, 1981. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 150-154).

Thesis (MScIng)--University of Stellenbosch, 2008. / Bibliography. Also available via the Internet.

No description available.

In this thesis an extension of the classical intersection cohomology of Goresky and MacPherson, which we call multiperverse cohomology, is defined for a certain class of depth 1 controlled stratified spaces, which we call multicontrolled stratified spaces. These spaces are spaces with singularities -- this being their controlled structure -- with additional multicontrol data. Multiperverse cohomology is constructed using a cochain complex of tau-multiperverse forms, defined for each case tau of a parameter called a multiperversity. For the spaces that we consider these multiperversities, forming a lattice M, extend the general perversities of intersection cohomology. Multicontrolled stratified spaces generalise the structure of (the compactifications of) Q-rank 1 locally symmetric spaces. In this setting multiperverse cohomology generalises some of the aspects of the weighted cohomology of Harder, Goresky and MacPherson. We define two special cases of multicontrolled stratified spaces: the product-type case, and the flat-type case. In these cases we can calculate the multiperverse cohomology directly for cones and cylinders, this yielding the local calculation at a singular stratum of a multicontrolled space. Further, we obtain extensions of the usual Mayer-Vietoris sequences, as well as a partial Kunneth Theorem. Using the concept a dual multiperversity we are able to obtain a version of Poincare duality for multiperverse cohomology for both the flat-type and the product-type case. For this Poincare duality there exist self-dual multiperversities in certain cases, such as for non-Witt spaces, where there are no self-dual perversities. For certain cusps, called double-product cusps, which are naturally compactified to multicontrolled spaces, the multiperverse cohomology of the compactification of the double-product cusp for a certain multiperversity is equal to the L2-cohomology, analytically defined, for certain doubly-warped metrics.

Class of 2005 Abstract / Objectives: To determine the frequency with which students living in a dormitory at a large state university share prescription controlled substances. Methods: Questionnaires which collected information about sharing of controlled substances were administered outside Manzanita residence hall. The questionnaire consisted of 11 questions and included what medications were shared, the frequency and reasons for sharing, and effects experienced; data on gender and age were also collected. Results: Questionnaires were completed by 80 males and 46 females. Fifty-one percent of males and 35% of females reported sharing controlled substances. The most commonly shared medications were pain killers (26 males and 9 females) and amphetamines (21 males and 7 females), with benzodiazepines being the next most commonly shared category of controlled substances (10 males and 4 females). Most students reported sharing controlled substances for recreational purposes, with study aid purposes being the second most reported reason. Few students reported sharing controlled substances for medical purposes. Implications: Controlled substances are frequently shared among students living in Manzanita Hall at Arizona State University for both recreational use and as study aids. Few students share controlled substances for medical purposes.

Drainage water management via controlled drainage (CD) and subirrigation (SI) has shown positive effects on water quality. To determine the impact of CD and SI in the Red River Valley (RRV), data from two fields, each with CD and SI, were analyzed. Water samples taken during SI from a North Dakota field during 2012-2018 were significantly different from those taken during CD and free drainage (FD). This was likely due to the SI water source of marginal quality, which also impacted soil quality near the drain tile. Three Minnesota fields were compared during 2013-2019, each with differing drainage practices. Results from a rainfall event showed an intermediate water table depth in the CD and SI field, along with a higher phosphate but lower nitrate concentration in surface runoff samples compared to subsurface drainage samples. Despite differences found between these fields, correlation between drainage practice and crop yield was not present.

Women are thought to be under-represented as clinical trial participants and as clinical trialists in heart failure. We reviewed randomized controlled trials of heart failure published in high impact medical journals and examined the representation of women as both participants and authors. Furthermore, we explored clinical trial characteristics independently associated with women as clinical trial participants and as lead authors. Our analysis demonstrated that women are under-represented as both clinical trial participants and leaders, with no change in temporal trends over time. Addressing clinical trial characteristics associated with under-representation and developing strategies to overcome barriers may be a strategic way to improve the representation of women in heart failure research. / Thesis / Master of Science (MSc)

No description available.

High-speed planing craft slamming into waves can cause structural damage to the vessel as well as hinder or injure personnel onboard. As a result, it is one of the primary constraints that limit the operating envelope of high-speed surface vessels. The controlled motion experiments presented in this thesis were designed to be an intermediate step between vertical water entry tests of a wedge and a traditional tow tank experiment of a planning hullform in waves. This allowed a deeper study of the hydrodynamic loads that occur during slamming. A planing hull model was subjected to controlled motions in the vertical plane to replicate the types of slamming motions that a vessel may experience in the ocean. The slamming events investigated were chosen based on towing tank experiments previously conducted at the U.S. Naval Academy. Hydrodynamic forces were measured globally and also at particular locations near the bow. The vertical motions were programmed into a pair of linear actuators that were rigidly mounted to the towing carriage. The towing carriage prescribed the horizontal motion. Each actuator was independently controlled and capable of moving at 1.3 m/s and 15 m/s^2. Pressure sensors were used to measure the pressure time history at discrete points on the model. Force sensors mounted beneath the actuators were used to compute the overall slamming load and moments induced by the slam event. A combination of other sensors were used to verify the accuracy of the prescribed motion profile. The results suggested that total impact velocity is correlated with the load growth rate. In addition, the velocity normal to the keel was found to be most impactful on the magnitude of the peak force. / Master of Science / The goal of this thesis was to understand the effect of high-speed boats impacting waves. These wave slamming events can harm the boat and make people sea sick onboard. Consequently, the top speed at which these high-speed boats can operate safely is often limited by these wave impacts. The approach taken for this study involved using a model boat that had similar features to high-speed boats seen in the real world. The model underwent specific movements to replicate the impact that occurs when a real boat encounters waves at sea. This method sought to identify important parameters that determine the severity of the slam event. A Vertical Planar Motion Mechanism simulated the slamming motion, allowing the model boat to move at high speeds relative to its size. A variety of sensors located throughout the model collected data on the slam event. The combination of these sensors helped paint a picture of what is occurring during the entire slam event. This study focused on the dynamics that are measured by the sensors. This included the pressure at important locations, the force on the whole model, and the way that the model moves. The Office of Naval Research provided both financial and intellectual support that makes this research possible. Beyond the ONR, many other academic, commercial, and military groups had given their support for this work.

Adult marijuana users seeking treatment (N = 291) were randomly assigned to 3 treatment conditions: 1) a cognitive-behavioral relapse prevention support group (RPSG), 2) individualized assessment and advice group, and 3) delayed treatment control group. The purpose of this study was to investigate the role of self-efficacy in goal setting and treatment outcomes based on self-stated goals (abstinence or moderation) for marijuana use. Measures of marijuana use, treatment goal, and self-efficacy for achieving one's goal were used. Goal choice was shown to influence treatment outcome such that, participants were more likely to achieve outcomes consistent with their treatment goal. The findings suggest that self-efficacy for goal achievement is more strongly related to outcomes for those with abstinence treatment goals, but appears to exert some effect across both goal types. / Master of Science