Much of the Columbia River Basin has been cultivated for agriculture, which has reduced and fragmented the native shrub-steppe habitats. As a result, the range of the Washington ground squirrel (Spermophilus washingtoni) has been significantly reduced, prompting the states of Washington and Oregon to review their status. Consequently, I investigated...
Environment, safety and health (ESH) research has a strong tradition of
conducting research in manufacturing to improve workplace ESH conditions and has
tied its management strategy and technical practices to many significant priorities:
illness and injury prevention, environmental sustainability, corporate social
responsibility, compliance with regulatory and insurance requirements, and dealing...
Collegiate Athletics is glorified in the United States; particularly at the NCAA Division I level. Through the lens of a sport-loving spectator, talented, scholarship athletes live the good life of suiting up in university colors, competing before their fans, and, when they’re taking a break from annihilating the competition, reveling...
Little is known on the importance of riparian areas to birds near small headwater streams in mesic forests. Progress towards understanding limiting factors that affect bird populations has been difficult because of lack of information beyond the breeding period. I compared bird assemblages between headwater riparian and upland areas throughout...
The greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) is a ground nesting gallinaceous bird that requires large contiguous patches of sagebrush. Sage-grouse populations have declined, especially in the Great Basin where changes in wildfire regimes and the invasion of annual grasses have contributed to habitat loss and fragmentation. During the last...
The main achievement of this thesis is the development of a two-sheet charge simulation model with space charge creation by trap-to-band impact ionization to describe the electrical characteristics of alternating-current thin-film electroluminescent (ACTFEL) devices. The two-sheet charge model localizes all of the space charge in the phosphor region of an...
This paper provides an overview of use rights, that sanction fishers, fisher groups and fishing communities to access and use fishery resources. The paper first reviews the various forms of use rights, ranging from access rights (territorial use rights and limited entry) to quantitative input (effort) and output (harvest) rights....
To effectively respond to sustainability challenges, there is a need to find (or re-discover) suitable ways to govern, so as to make decisions that maintain healthy environments and sustainable livelihoods in fishery systems. While efforts to this end are needed at all governance levels, from the global to the local,...
There is increasing recognition that the oceans of the world support a wide range of economic sectors. Managing those multiple uses, within a ‘commons’ environment, is undoubtedly challenging. Approaches of ecosystem-based management (EBM), integrated ocean management (IOM) and marine spatial planning (MSP), with associated aspects of spatial allocation and conflict...
The Fukushima Daiichi nuclear disaster of 2011 made it apparent that releases of fission products to marine environments is a very real possibility. Additional data on the movement of material through marine environments can be used by radioecology personnel to assist with both ecosystem protection as well as environmental cleanup...
Purpose: This investigation was conducted to determine
whether or not teachers and students perceive the environmental press
of a secondary school differently, and whether or not teacher groups
and student groups vary in their perceptions.
Conceptual Framework: "Press" i s a construct which expresses
the assumption of elements in the...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock
Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and
andesites were erupted as shield volcanoes seaward of the strandline ontop of an older
deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock
Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and
andesites were erupted as shield volcanoes seaward of the strandline ontop of an older
deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock
Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and
andesites were erupted as shield volcanoes seaward of the strandline ontop of an older
deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock
Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and
andesites were erupted as shield volcanoes seaward of the strandline ontop of an older
deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock
Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and
andesites were erupted as shield volcanoes seaward of the strandline ontop of an older
deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock
Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and
andesites were erupted as shield volcanoes seaward of the strandline ontop of an older
deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and andesites were erupted as shield volcanoes seaward of the strandline ontop of an older deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
This study investigated factors that influence career choice and
development for gay male school teachers. Ten gay educators
participated in the investigation. Data collection methods involved
two semi-structured personal interviews and one structured telephone
interview for a total of 30 sampling units. Data analysis procedures
included reviewing audiotapes, reading transcriptions,...
Mouthfeel is one of the most important quality parameters of Chardonnay wines. Malolactic fermentation (MLF) is an important process in wine production, and influential to wine mouthfeel, with the reduction in acidity being particularly important for cool climate wines that generally have higher acidity such as Chardonnay. MLF is typically...
Developing new wastewater treatment technologies which will off-set the high-energy cost associated with treatment is necessary to maintain both water and energy security. Microbial fuel cell technology represents one such option. However, there are still many obstacles to overcome before practical application of this technology can be realized. Improving cathode...
A radix 2n non-restoring division algorithm is described. The
algorithm is designed to be compatible with hardware multiprecision
multiplication methods currectly used in high speed digital computers.
This enables the use of the same hardware, with only changes in
control logic, to be used to implement both multiplication and
division....
A significantly untapped renewable energy source exists in the world's oceans. It is estimated that if 0.2% of the ocean's untapped energy could be harnessed, it could provide power sufficient for the entire world. Ocean energy extraction is an old concept, and it is currently seeing the benefit of advancing...
The vascular endothelium is a single cell layer that lines the lumen of the entire vasculature. It is the site of synthesis of nitric oxide (NO), a vasodilatory compound synthesized by endothelial nitric oxide synthase (eNOS). NO causes intracellular calcium sequestration of the vascular smooth muscle cells, relaxing and dilating...
The Oregon Department of Transportation is responsible for many steel deck truss bridges containing connection details that are fatigue prone. A typical bridge, the Winchester Bridge in Roseburg, Oregon, was analyzed to assess the loading conditions, stress levels, and fatigue life of the connection details. The analysis included linear-elastic beam...
Discordance in bone mass between young adult swimmers and soccer players may be a direct result of differences in bone loading patterns that influence bone mineralization during growth. Our aim was to evaluate whether sports participation (soccer and swimming) had an independent effect on bone mass accrual at the hip...
A computationally efficient algorithm has been developed for
determining exact or approximate solutions for large scale generalized
fixed charge problems. This algorithm is based on a relaxation
of the Benders decomposition procedure, combined with a linear
mixed integer programming (MIP) algorithm specifically designed to
solve the problem associated with Benders...
The optical response of metallic structures is dominated by the dynamics of their free electron plasma. Plasmonics, the area of optics specializing in the electromagnetic behavior of heterogeneous structures with metallic inclusions, is undergoing rapid development, fueled in part by recent progress in experimental fabrication techniques and novel
theoretical approaches....
The object of this study was to investigate the possibilities
of tracing aggregational behavior among Bufo boreas boreas
larvae with reference to tadpole development, and to attempt to determine
what aggregational factors initiate and maintain this behavior.
Additionally, an attempt was made to determine the significance
of temperature as an...
The research revolves around membrane-assisted electrolysis to recover caustic soda from alkali processing. This research began with the lab having no experience in electrochemistry and thus conducting initial experiments to begin to understand electrochemical systems. The lab then looked at both gas production and anodic fouling behavior. The lab then...
Full Text:
Final Undergraduate Research Report
Anthony Dulaney
Part
Continental shelves located along eastern boundary currents occupy relatively small volumes of the world’s oceans, yet are responsible for a large proportion of global primary production. The Oregon coast is among these ecosystems. Recent analyses of dissolved oxygen at shallow depths in the water column has suggested increasing episodes of...
The application of the widely used Penrnan-Monteith evapotranspiration equation to hybrid poplar trees is impossible without a valid surface resistance. The increase in applications of drip-irrigated hybrid poplar trees for wood chip stock and veneer production, as well as bioremediation, constitutes a need for estimating the evapotranspiration of these trees....
Cystic ovarian disease (COD) is an anovulatory condition in cattle
that afflicts between 6-18% of all dairy cows in the US. Ovulation is
dependent on the plasminogen activator (PA) family of proteases
and protease inhibitor for proteolysis, culminating in follicular rupture.
Failure of the follicle to ovulate suggests an aberration...
With each generation of technology, computers become even more capable of rendering objects with an ever increasing number of polygons. As a result, the desire to add more details to a 3D model increases as well. Among the many tools provided by computer graphics software that an artist has at...
The regulation of ergosterol biosynthesis in yeast has been
studied. The system has been examined for the presence of an end-product inhibition. Both anaerobically and aerobically grown cells
have been examined for this effect. A feedback inhibition of sterol
synthesis has been shown, but it appears to be a secondary...
Identifying habitat and spatial requirements of wildlife species across multiple spatial scales is a challenging, yet crucial component of wildlife management. Habitat use of bats is particularly difficult to study, and managing habitat to conserve bats is especially challenging because bats are highly vagile organisms that exploit several different types...
Unit dose drug distribution systems have been established in a
number of hospitals during the past several years. Such systems show
promise in providing better and safer patient care. They also seem to
minimize the non-professional aspects of drug handling by nurses,
thus enabling them to spend more time with...
The Yanacocha Mining District in northern Perú is considered the largest group of
high-sulfidation style epithermal gold deposits in the world. District-scale geologic mapping coupled with detailed 40Ar/39Ar geochronology, geochemistry and petrography establish the volcanic history of the area and analyze the temporal and spatial evolution of volcanism, hypogene advanced...
Full Text:
Yanacocha Mining District, Northern Perú
By
Anthony A. Longo
Ph.D. Geology
Pile caps are structural elements used to transmit loads from structural columns into pile groups. A pile cap is generally constructed of reinforced concrete and contains only minimal flexural reinforcing steel. Using modern design methods, the anchorage of the flexural steel may limit the design capacity of existing pile caps....
If wind power is to become a viable energy alternative, a rapid and reliable cost effective methodology must be established, whereby large areas can be surveyed for windy sites and those sites can be evaluated. Based primarily on locating wind deformed vegetation, this paper establishes the feasibility of using air...
In this dissertation, we attempt to overcome the "curse of dimensionality" inherent to radiation diffusion kinetics problems by employing a novel reduced order modeling technique known as proper generalized decomposition (PGD). After verifying a proposed PGD algorithm and associated solvers through various tests, we explore its performance for computing reduced-order...