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...
There are times when forage producers desire a quick-growing, high quality annual forage in mid-summer in situations such as: less-than full season irrigation water supply; need for an emergency crop due to crop failure; or forage rotation crop between alfalfa stands. Currently there are few good options in these situations....
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...
1. The xylem pressure inducing 50% loss of hydraulic conductivity due to embolism
widely used for comparisons of xylem vulnerability among species and across aridity
However, despite its utility as an index of resistance to catastrophic xylem failure
drought, P5o may have no special physiological relevance in the context of...
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...
This report was written as a resource for water quality managers, watershed councils, municipalities and citizens to help understand the status of watershed conditions in the Willamette Basin. Our interpretations are based on chemical, physical and biological indicators at three different spatial scales: the basin scale, the subbasin scale and...
Since September 2006, the Oregon State University (OSU) Archives has concentrated on the preparation of collection-level finding aids for all new collections received by the Archives and for collections that have no descriptive information available online. This article presents a preliminary analysis of the results of this approach, demonstrates the...
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.
Grain is produced on upwards of 100,000 acres in the Klamath Basin, including nearly 50,000 acres within the Klamath Reclamation Project. Susceptibility to late spring frosts has historically limited winter cereal production and spring cereals have accounted for the majority of production. Starting in 2003, acres seeded to winter wheat...
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...
Applying concepts from the behavioral complexity literature (Ashby, 1952; Denison, Hooijberg, and Quinn, 1995) we examine if supply managers’ multiple roles and the ability to shift among these roles is related to their interpersonal relationship with their key contact within the strategic suppliers’ organization and ultimately with the firm-to-firm relationship....
Recent work by S. Lentz et al. documents offshore transport in the inner shelf due to a wave-driven return
flow associated with the Hasselmann wave stress (the Stokes–Coriolis force). This analysis is extended using
observations from the central Oregon coast to identify the wave-driven return flow present and quantify the...
Offshore wave conditions along the Oregon coastline are measured at a handful of buoy
locations where directional wave information is available. Most of these buoys are located in
deep waters and incoming waves undergo changes as they travel from deep water onto the shelf
where wave energy conversion arrays are...
Recent natural disasters around the world including
both tsunamis and hurricanes, have highlighted the inability
of wood buildings to withstand wave and surge
loading during these extreme events. Little is known
about the interaction between coastal residential light-frame
wood buildings and wave and surge loading because
often little is left...
OWET commissioned this gap analysis to assess the infrastructure needs of ocean renewable energy and compare those needs against the existing and planned infrastructure capabilities in Oregon. The Wave Energy Infrastructure Assessment in Oregon report summarizes the results of the assessment performed by Advanced Research
Corporation and is intended to...
This is an informational document provided by the Oregon Wave Energy Trust (OWET) for the purposes developing a broad understanding of the current regulatory framework among stakeholders, regulators, and developers in the wave energy industry. To that end, this document provides a high-level summary of federal and state authorizations that...
As the emerging ocean energy industry progresses towards commercialization, the need for a regulatory process that sufficiently addresses key interests has become increasingly apparent. As part of the organization’s efforts to foster responsible development in this emerging industry, OWET is sponsoring a program to educate and engage with stakeholders about...
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.
Artists use different means of stylization to control the
focus on different objects in the scene. This allows them to portray complex meaning and achieve certain artistic effects. Most
prior work on painterly rendering of videos, however, uses only
a single painting style, with fixed global parameters, irrespective of objects...
The VegNet regional pest monitoring program sponsored by the Oregon Processed Vegetable Commission has been fruitful.The program has, on occasion,saved growers money by providing
growers and agricultural professionals with early warnings
of insect pest outbreaks. The combination of regional pest
monitoring plus field scouting has allowed growers, in some cases,...
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,...
In February 2009, the Oregon Wave Energy Trust kicked off a project titled the Utility Market Initiative (UMI). The project's purpose was to initiate a process to align the needs of the regional electric utilities with the resource potential of the wave energy industry. Pacific Energy Ventures' proposal that include...
What is the uncertainty of climate-carbon cycle projections in response to anthropogenic greenhouse gas emissions and how can we reduce this uncertainty? We address this question by quantifying the ability of available ocean tracer observations to constrain the values of diapycnal diffusivity in the pelagic ocean (Kv), a key uncertain...
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...
This article describes a technique using the Thomson Reuters' Journal Citation Reports and the SHERPA RoMEO Web site to identify a set of core journals in a discipline and determine whether the journals' publishers allow preprint or postprint archiving in their copyright transfer agreements.
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...
Usability, user studies, and evaluating user experiences have been a part of academic libraries for many years. In the last 20 years libraries have created ad hoc usability teams to do user studies. Oregon State University (OSU) Libraries started its ongoing team in 2006, resulting in an increased focus on...
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...
In the blink of an eye, unconscious bias was visible to me, an African American. A man saw my face as I walked into the store and unconsciously checked his wallet. On the street, a woman catches my eye a half block away and moves her purse from the handle...
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,...
We present observations from deployments of a microstructure turbulence instrument
(the Towed Microstructure and Auxiliary Sensor Instrument) aboard a pumping profiling
vehicle (the Lamont Pumping SeaSoar) towed behind a research vessel at the New
England shelf break front in August 2002. From these we determined coincident fine-scale
vertical eddy diffusivity...