Much of the rich forestlands of Oregon are subject to frequent mass wasting
events, resulting in severe environmental and economic damages. Extensive research has
shown that this landslide hazard is often exacerbated by many management activities.
Following a severe storm event which triggered thousands of landslides, the Oregon
Department of...
The purpose of this thesis is to argue that LeBron James’ expressions of activism are, in many ways, perceived as insincere, hypocritical or disingenuous to his followers on the social media platform Twitter. Using the theoretical framework of Affect Theory and Plutchik’s wheel of emotions, a close reading was conducted...
Jointed goatgrass (Aegilops cylindrica Host.) is a serious weed problem in wheat (Triticum aestivum L.) production in the United States. Studies were conducted to determine the outcrossing rate, competitive ability, and effectiveness of certain control practices on jointed goatgrass. A field study was conducted over two years at four locations...
In this report, three studies are presented that utilize computations to predict transformations, identities, and properties of environmental organic molecules. Each study shows how computations can lead to models of chemical behavior. The importance of this research is rooted in the need for understanding how human behavior and health intersect...
The nuclear industry has shown a large interest in natural circulation driven passive cooling systems following the Fukushima nuclear accident. Despite this interest, there is no widely used heat transfer correlation or friction factor correlation developed for natural circulation driven flow. A CFD analysis including grid convergence testing using Fluent...
The collective understanding of the critical heat flux phenomenon is crucial to the safety and operational power limits of every nuclear and petrochemical power plant in the world. To define the maximum heat transfer capability in the postulated reactivity-initiated accident in a nuclear reactor, the mechanisms that trigger the departure...
The aerodynamic performance of an oscillating pitching and plunging foil operating in the energy harvesting mode is investigated. Experiments are conducted in a closed-loop recirculating wind tunnel at Reynolds numbers of 24,000 to 48,000, and reduced frequencies (k = fc/u) of 0.042 to 0.083. Foil kinematics are varied through the...
Force data for a flapping foil energy harvester with active leading edge motion operating in the low reduced frequency range is collected to determine how leading edge motion affects energy harvesting performance. The foil pivots about the midchord and operates in the low reduced frequency range of 0.06, 0.08, and...
Irradiation experiments are a critical aspect of the nuclear fuels and materials qualification process. Determining the flow conditions of these experiments is necessary for understanding response of nuclear components during transient and normal operation. Quality flow data is lacking for cartridge-type irradiation experiments with annular flow natural circulation designs. Data...
The advancement of new manufacturing techniques such as additive manufacturing enable significantly greater freedom of design compared to conventional techniques. Of significant interest is what improvements could be made in the design of cold plates and heat sinks for electronics cooling. Greater design freedom could potentially enable new designs that...