X-ray computed tomography is a noninvasive imaging modality capable of reconstructing exact density values of 3D objects. Computed tomography machines are deployed across the world to provide doctors with an image that reveals more detail than a standard x-ray image. We investigate algorithms based on exact computed tomography reconstruction formulas...
The marine climate of the Galapagos is spatially and seasonally
heterogeneous. A taxonomically comprehensive study of Galapagos zooplankton has
never been done. This study is an initial effort to establish the distribution and
community structure of zooplankton in the Archipelago. I collected zooplankton
samples by vertical tows over the Galapagos...
Oregon has a rich history of orchard cultivation
across the state. Today, orchards continue to
be an important part of Oregon’s economy
and contribute to a healthy and balanced diet for the
public. But, with the growth of residential development,
lands that once contained orchards are being
converted into homes...
This thesis consists of an autoethnography of a sexual assault survivor written using poems, journal entries, annotations, photographs and song lyrics. The ethnography is a chronological record of feelings the author experienced during the day prior to the attack and emotions she navigated during the year and a half after...
Creating an untraditional more personalized thesis allowed me to combine my
passion for children, travel, language, and books all into one. Hans the Adventurer is
a children’s book about a young German boy who loves to go on adventures.
However Han’s has to go on the adventure alone when his...
The purpose of this study was to identify and describe the underlying mechanisms within community colleges that influence cross-functional collaboration. The study also explored the role of community college leadership in fostering internal collaboration. The following questions guided the research: (1) What does cross-functional collaboration look like at a community...
Winter grain mite, Penthaleus major (Duges), is a small, colorful, cool season mite that damages grass and cereal crops throughout the Pacific Northwest as well as in most other temperate regions of the world. Hosts include most cereals and grasses of economic importance. Winter grain mite has been a frequent...
The eight stories in Wild West Love Songs explore issues such as loss, suffering, and betrayal, but perhaps the most consistent theme is the examination of the ways we are haunted by our past. All the protagonists in these stories are haunted. Sometimes they are haunted literally, by a ghost...
The wheat head armyworm (Faronta diffusa) is a troublesome pest in cereal grains in the Pacific Northwest. This publication describes the life cycle, behavior, distribution, and feeding of the wheat head armyworm. Guidance on identification and control of the pest is also provided.
My project is designed to determine how the English major and English Studies exist at OSU, through the collection of perceptions and opinions about English Studies at OSU from students and faculty (both inside and outside of the English department) via email surveys. I used secondary research to determine how...
Stormwater has traditionally been conveyed off a developed site as quickly as possible, primarily through pipes. This runoff is often stored in large ponds and/or treated in central facilities. As cities grow and development continues, more runoff is generated via impervious surfaces. Excessive runoff impacts the water quality of water...
The current appeal of reality television is undeniable, with the specific genre of makeover television having special nationalistic and moral appeal in the United States. Previous analyses of NBC's weight-loss makeover show The Biggest Loser suggest that the program is inherently problematic because of its ingrained fat bias and unethical...
The Disney Company is an inescapable force in American life that is often detached from the stigma of big business and instead viewed as something particularly valuable, the United States’ foremost storyteller. In addition to the stories that the Disney Company
produces through its animated and live-action productions, there is...
Numerous water supply systems and community based water boards have been created with the aid of international organizations and NGOs in developing countries. These water systems have great potential to improve people’s social life and health in these countries. However, in reality, these water systems are often not effectively managed;...
This document summarizes a collaborative effort of the Wallowa Resources, Northeast Oregon Economic Development District and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program to develop indicators of Wallowa County community vitality in a way that reflects the goals and values of the...
Oregon’s High Lava Plains Province (HLP) has strongly bimodal basalt and rhyolitic volcanism. The Province caps the northern margin of the Basin and Range Province and serves as a transitional region between westward extension of the Basin and Range Province and unextended crust to the north . The High Lava...
This collection of poems discusses the human body, the desires to have control over that body, and the memories contained within. In some poems, the body is overt; in others, the probing
spills from man into the animal world, and even poems that depict landscape often do so in bodily...
It’s that time of year when many of you are out and about scouting for the earliest signs of powdery mildew and implementing your vineyard spray programs throughout the state. Here’s a quick status update for powdery mildew forecasting and management.
On piñon-juniper encroached sites that lack the understory fuels to carry a prescribed fire, treatment options are limited to mechanical methods. Cutting with chainsaws and leaving the trees on site has been the primary treatment method for such sites, however this method creates a potential fire hazard, particularly in the...
Home gardens produce the best yields when planted with vegetable varieties adapted to local growing conditions. Market growers and home gardeners may be able to use the information from these trials to help them choose adapted varieties, based on vegetable qualities that are important to them (appearance, earliness, flavor, yield,...
The net mass balance fluctuations of Arctic and Sub-Arctic glaciers, north of 47.5°
North latitude, are described over a 45-year period from 1957 to 2002 using two
parameters derived from a gridded climatology reanalysis. Variability among 185
measured glaciers was represented according to two main components. The first
component represents...
In the field of Human-Computer Interaction, provenance refers to the complete history and genealogy of a document. Provenance can be useful in identifying related resources, such as different versions of the same document or resources used in the creation of a new document. Though methods of provenance collection and applications...
Suspended sediment and in situ turbidity data from two western Oregon streams, Oak Creek and South Fork Hinkle Creek, were used to estimate annual sediment loads for the 2006 water year (October 1, 2005 to September 30, 2006). Water samples and in situ turbidity observations were taken following the Turbidity...
The field of geography has been transformed in recent years through the use of spatial tools such as geographic information systems (GIS) satellite and acoustic remote sensing, the global positioning system (GPS), Internet mapping and more. Studying geography and earth science in the digital age now requires a sophisticated and...
Real-time, high efficiency neutron spectroscopy has, historically, been a persistent challenge in the field of radiation detection and, for the most part, has gone unsolved. The most promising method to resolve this challenge, is the boron-capture technique using an organic scintillation system (BC-523a). Detectors that utilize this method possess an...
Mycoplasma haemolamae is associated with mild to marked anemia in stressed, immune-suppressed, and debilitated animals, and may be found in low numbers in healthy animals. The continued presence of the organism, detectable by polymerase chain reaction (PCR)-based assay, may be associated with an underlying problem, such as stress or immune-suppression...
A Mobile Ad-hoc NETwork (MANET) is collection of wireless mobile nodes without a network infrastructure or centralized administration. Although MANETs can be used in many applications, such as mobile Internet, military communication, and disaster relief networks, a number of challenges remain. These include routing, medium access control, security, scalability, energy...
Shifting climate patterns in the Columbia River basin are affecting snow pack, and, as a result, stream flow throughout the region. In the Oregon Cascades, ever growing populations, and their associated activities, place increasing stress on an already over allocated hydrologic system. Political pressures, including the possibility of renegotiation or...
The purpose of this case study was to examine a third-grade teacher’s effective use of mathematical discourse in the classroom setting. The study offers insights into the following research questions: 1) How does a teacher’s engagement in mathematical discourse communities influence her practice and self-efficacy as a mathematics educator? 2)...
As college students transition to life away from their parental home, the need to make independent decisions regarding their eating and exercise behaviors is evident. This life transition may be a critical period for establishment of long term behavior patterns with potential impact on health, disease and weight balance. This...
End users' programs are fraught with errors, costing companies millions of dollars. One reason may be that researchers and tool designers have not yet focused on end-user debugging strategies. To investigate this possibility, this dissertation presents eight empirical studies and a new strategy-based end-user debugging tool for Excel, called StratCel....
Low energy design techniques for digital circuits are examined to determine their suitability for use in a digital logic controller for wireless sensor network nodes. Transistor level simulations are used to evaluate the techniques and those demonstrating an energy reduction are used to implement a digital logic controller. The digital...
In Radio Frequency Integrated Circuits (RFIC) or high frequency digital
ICs, there is a demand to probe the internal nodes for testing. The ultra low
capacitance RFIC probe presented in his work is a flexible tool for these
applications. The probe utilizes the coupling between a tungsten needle and the...
We consider the problem of tactical assault planning in real-time strategy games where a team of friendly agents must launch an assault on an enemy. This problem offers many challenges including a highly dynamic and uncertain environment, multiple agents, durative actions, numeric attributes, and different optimization objectives. While the dynamics...
Ensuring correctness of real-world software applications is a challenging task. Testing can be used to find many bugs, but is typically not sufficient for proving correctness or even eliminating entire classes of bugs. However, formal proof and verification techniques tend to be very heavy weight and are simply not available...
Methane hydrates and biohydrogen are two disparate subjects that are of interest in the growing field of alternative energy research. However, before commercial use becomes a viable option, each has challenges that need to be overcome. Methane hydrates require large investments of time and capital to locate. In this thesis,...
'Tubbs' is a soft white winter wheat variety developed by Oregon State University in cooperation with the USDA Agricultural Research Service. This publication describes the agronomic characteristics, development, and availability of Tubbs.
'Tubbs 06' is a soft white winter wheat variety developed by Oregon State University in cooperation with the USDA Agricultural Research Service. This publication describes the agronomic characteristics, development, and availability of Tubbs 06.
This thesis is a study of the changes in the cultural definition of the American Dream. I have chosen to use Superman comics, from 1938 to the present day, as litmus tests for how we have societally interpreted our ideas of “success” and the “American Way.” This work is primarily...
The origin of the Pacific Decadal Oscillation (PDO), the leading mode of sea surface temperature variability for the North Pacific, is a matter of considerable debate. One paradigm views the PDO as an independent mode centered in the North Pacific, while another regards it as a largely reddened response to...
This publication is a guide for protecting, conserving, selecting, maintaining, removing, and replacing trees on development sites in the Pacific Northwest. The guidebook is designed to assist people who work with trees during the development and construction phases of both new and existing projects to keep healthy trees a part...
This research effort examined Traditional Ecological Knowledge (TEK) of Siletz tribal members of the environment they live and/or lived in, and how both Western societal beliefs and land reduction to the initially established reservation location affected and altered how the area TEK has been maintained and passed down. The theory...
Published July 2009. Reviewed December 2013. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Ocean wave energy is a new and developing field of renewable energy with great potential. The energy contained in one meter of an average wave off the coast of Newport Oregon could supply dozens of homes with electricity. However, ocean waves are usually quite irregular which leads to large bursts...
Measurements of social constructs that evaluate natural hazard preparedness are important to decrease natural hazard vulnerability. Preparedness reduces natural hazard impacts and human vulnerability. Investment in education and education research contribute to human sustainable development and natural hazard preparedness. Faced with other needs, people typically do not prepare enough to...
The results of a machine learning from user behavior can be thought of as a program, and like all programs, it may need to be debugged. Providing ways for the user to debug it matters because without the ability to fix errors, users may find that the learned program’s errors...
In this thesis, I conduct an analysis of paradigmatic background assumptions deployed in engineering decision-making processes, in order to understand how these assumptions, operating tacitly and in tension with each other, contribute to decisions that are ethically less effective and less substantial than they would otherwise be. I do so...
In previous work (Blakemore et al. Org. Lett. 2005, 7, 4721; Heterocycles 2006, 70, 609), successful elaborations of the lupine alkaloids (±)-α-isosparteine (dl-2) and (±)-β-isosparteine (dl-3) were realized from a common tetraoxobispidine precursor, 3,7-diallyl -2,4,6,8-tetraoxo-3,7-diazabicyclo[3.3.1]nonane (93). Herein, the tetraoxobispidine approach to lupine alkaloids was extended to a total synthesis of...
Analysis, visualization, and design of vector fields on surfaces have a wide variety of major applications in both scientific visualization and computer graphics. On the one hand, analysis and visualization of vector fields provide critical insights to the flow data produced from simulation or experiments of various engineering processes. On...
Within this thesis, I posit that poetry, rather than philosophical argument, is a more effective means of expressing and understanding the nature of mystical experiences. William James’ analysis of mysticism inspires the theoretical approach utilized in this thesis. An analysis of the unique qualities of poetic language within mystical discourse...
Tissue weighting factors, w[subscript T], used to convert equivalent dose to effective dose, account for differences in radiosensitivity of various organs in the human body and allow users to compare individual organ detriment to whole body risk. They are explicitly calculated in ICRP 26, 60, and 103, although the methods...
Contract harvest operations have become the preferred approach to reducing the largest cost component of timber production through free market competition amongst logging contractors bidding or negotiating for work. The goal of this research was to investigate economic components of harvesting operations not previously studied for steep slope thinning harvests...
Researchers have long sought to understand the relationship between economic growth and social development. The notion that economic growth increases social well-being was first written about by Rostow in 1960. This idea quickly became prominent and well accepted- the foundation of development policy. However, in the past twenty years many...
Water temperature is an important measure of water quality, as well as a dominant factor affecting aquatic life within the stream environment. Elevated water temperatures can decrease the survival rate of fish in each life stage. Cold water species, such as salmonids, are particularly susceptible to elevated water temperatures. For...
The experimental and theoretical bases of transient electric birefringence (TEB) and its application in a variety of nanomaterials, including Na-montmorillonite, cellulose nanocrystals (CNXL), and CdSe quantum dots (QDs) will be presented. TEB is a phenomenon attributed to the alignment of particles in response to an applied electric field and has...
The use of paraeducators has increased as a main mechanism to include more
students with disabilities in multiple settings in the public schools in the U.S.
Research has examined the use of paraeducators in typical classroom settings but
little is known about their role in physical education. Although the utilization...
Ecosystems are facing increasing threats from human related activities, such as overfishing, pollution, habitat destruction, species invasions, and diseases, among others. While oceanic islands provide natural laboratories to understand ecological and evolutionary process, they are also particularly vulnerable to these impacts, given their usual isolation from the mainland and the...
Endothelial activation with increased expression of cellular adhesion molecules, chemokines and pro-inflammatory cytokines critically contributes to vascular inflammation and the initiation and progression of atherosclerosis. By affecting redox-sensitive cell signaling pathways and transcription factors, redox-active transition metal ions, such as copper and iron, may play an important role in these...
The purpose of this study is to examine the role of a Filipino American college student organization at a Predominantly White Institution, and uncover elements of the organization that influence or limit the development of critical consciousness of its members. This study focuses on the aspect of critical consciousness that...
Apex predators have experienced catastrophic declines throughout the world as a result of human persecution and habitat loss. These collapses in
top predator populations are commonly associated with dramatic increases in the abundance of smaller predators. Known as “mesopredator release,”
this trophic interaction has been recorded across a range of...
This thesis explores the effects study abroad literature, specifically promotional Websites, have on
Oregon State University students when selecting a study abroad program and if the students’ choices reflect
OSU’s International Degree and Education Abroad’s (IDEA) goal of global competency for students.
To explore this, two online surveys were made;...
We studied the feasibility of using end-grain characteristics to match individual boards and cants back to their parent Douglas-fir (Pseudotsuga menziesii) logs. After reviewing marking/reading and biometric automated identification systems, we focused on end-grain biometrics because they appear to have the most promise for sawmills. Biometric identification requires that every...
Decades of experimental work has illustrated the high degree to which the partitioning of most elements is dependent on phase composition, temperature and pressure. In order to quantitatively describe clinopyroxene partitioning it is required to derive expressions using theoretical constraints calibrated with experimental data.
The experimental database available for such...
This thesis is an exploration of Catch-22 (1961) and Slaughterhouse-Five (1969), two early documents of American postmodern literature. In particular, this thesis attempts to present the critical discussions surrounding each novel as parallel to the broader theoretical discussions surrounding the concept of postmodernism. My contention is that, in both of...
The language of water policy both suggests and enforces the relationship that the public should have with water. Differences in language use between policy institutions and the public suggest that the understanding of water promoted through policy may be incongruent with the understanding of water held by the public. Semi-structured...
The purposes of this study were to examine the experiences of African American female students attending urban community colleges, to gain further understanding of how they interpret the meaning of persistence, and to identify the factors that affect their persistence. African American women attending community college in Los Angeles were...
In most estuarine systems it is assumed that the dominant along-channel momentum balance is between the integrated pressure gradient and bed stress. Scaling the amplitude of the estuarine circulation based on this balance has been shown to have predictive skill. However, a number of authors recently highlighted important nonlinear processes...
The impact of yeast on the aroma and flavor of Vitis vinifera L. cv. 'Pinot Noir' wine was investigated. Due to the presence of naturally occurring yeast and bacteria on grapes and wine equipment, and the influence these microorganisms have on wine, a means of eliminating microorganisms from grape must...
In recent decades, there has been a tremendous change in the college student
experience. In many ways this change has been driven by developments in
technology, which have in turn changed the way students conduct research,
socialize, and recreate. This thesis seeks to gain an understanding as to how
Internet...
This study examines the effects of corporate social responsibility (CSR) on merger and
acquisitions (M&A). Using data from Kinder, Lyndeberg, and Domini (KLD) Research
Analytics and Thomson’s Securities Data Corporation’s (SDC) Platinum Database, we
empirically test if CSR scores effect a firm’s propensity to pursue M&A activity.
Specifically, I examine...
The Gene Ontology (GO) Consortium (http://www.geneontology.org) (GOC) continues to develop,
maintain and use a set of structured, controlled
vocabularies for the annotation of genes, gene
products and sequences. The GO ontologies
are expanding both in content and in structure.
Several new relationship types have been introduced
and used, along with...
This project is a short novelette told from the points of view of several different characters. The story is set in an airport and follows these characters as they wait for their flight to arrive. Each of the characters is observing the others, much like people do everyday without realizing...
Approximately 12% of Americans do not consume the amount of zinc equal to the Estimated Average Requirement for zinc and could be at risk for marginal zinc deficiency. Zinc is an essential component of proteins in the defense against oxidative stress and DNA damage repair. Specifically in the prostate, zinc...
Non-timber forest products (NTFPs) are an important aspect of the forest that has often been overlooked. NTFPs have been especially important to Native American people because of their subsistence, cultural, and economic values. As a result of their economic value, there have been an increased number of people harvesting NTFPs...
The purpose of this dissertation was to explore the experiences of Asian group leaders who were leading groups in Asia. This research was developed to address a need for exploratory research in the area of Asian group leaders' perceptions and experiences during the process of leading groups in Asia. Grounded...
Window displays are an important means by which retailers communicate with both current and potential consumers. The present study investigated how the use of context setting (with or without) in a window display and background music (with or without) influence consumers' mental imagery, arousal response, attitude toward the display, and...
Falls caused by slips are a major health risk to older adults and place a large financial strain on the health care system. Previous research has found that individuals can learn to recover their balance after being exposed to a series of simulated slips. However, training large numbers of older...
PURPOSE: The purpose of this research was to quantify the effects of a warm-up with static or dynamic stretching on countermovement jump height, reaction time, muscle onsets for tibialis anterior (TA) and vastus lateralis (VL), and low back/ hamstring flexibility.
METHODS: Twenty one recreationally-active males (24.4 ± 4.5 yrs), recruited...
Commercial thinning operations can result in damage to residual stems. A literature review revealed that little was known about the effects of residual logging wounds with regard to rotation-age commercial conifers, particularly Douglas-fir. An experiment to examine fungal colonization of Douglas-fir following logging damage showed that while damage was significant...
Two forest management objectives being debated in the context of federally managed landscapes in the US Pacific Northwest involve a perceived trade-off between fire restoration and C sequestration. The former strategy would reduce fuel (and therefore C) that has accumulated through a century of fire suppression and exclusion that has...
Pesticides can often be toxic and for this reason their methods and quantities of application are extremely regulated. Pesticide applicators are at risk of permanently damaging their health from exposure to pesticides. In order to ensure that these employees have the proper information to protect themselves, they are required to...
The bi-directional relationships within the personal and contextual environments of adolescents are critical to the development of adolescents and their transition into adulthood. Opportunities for youth to participate in and provide leadership in meaningful programs, gain life skills, and interact with adults in sustained relationships are key features leading to...
Douglas-fir [Pseudotsuga menziesii (Mirbel) Franco] bark (DFB),
sphagnum peat moss, and pumice are the most common substrate components used
in the Oregon nursery industry. Despite the widespread use of these three
components, little information is available on the effect of physical and hydraulic
properties of peat moss and pumice on...
Coagulation and flocculation are commonly used in drinking water treatment
as a means of destabilizing and aggregating particles and promoting adsorption of
dissolved organic carbon (DOC). In practice, jar tests are used to determine optimal
conditions for the removal of turbidity and DOC. However, beyond the inferences
that can be...
The nature of engineering work requires that ethical considerations are taken into account while making decisions surrounding topics such as technology, equal distribution of cost benefits, and consumer risk. In order for engineers to make ethical decisions in their careers, it is helpful if their engineering education provided them with...
General purpose computer systems have seen increased performance potential through the parallel processing capabilities of multicore processors. Yet this potential performance can only be attained through parallel applications, thus forcing software developers to rethink how everyday applications are designed. The most readily form of Thread Level Parallelism (TLP) within any...