This experiment was designed to investigate the use of volume
estimations from aerial photography and probability proportional to
size (PPS) sample selection in the development of a practical sampling
design for timber volume estimation on small land areas of
Pacific Northwest Douglas -fir (Pseudotsuga menziesii, Franco).
The major problem of...
Soil acidity is a major factor inhibiting pasture production in western Oregon. The typical management solution to acidic soil problems is to lime. However, lime cannot be incorporated directly into the soil in established pasture. The only alternative is topdress or surface apply lime and wait for soil fauna to...
To examine the influence of forest management on wildlife immunity, the innate immune system of wild deer mice (Peromyscus maniculatus) inhabiting forest plots of different management intensities in the Oregon coast range was measured by bactericidal assay. Bactericidal activity was compared across three management levels, including 40-50 year old forest...
To examine the influence of forest management on wildlife immunity, the innate immune system of wild deer mice (Peromyscus maniculatus) inhabiting forest plots of different management intensities in the Oregon coast range was measured by bactericidal assay. Bactericidal activity was compared across three management levels, including 40-50 year old forest...
Detailed surveys of several segments of the Peru Trench show
that the region between 6° to 10⁰ S is an area of recent deformation.
Seismic reflection records across the axis of the trench show faulting,
uplift, and tilting of the sedimentary fill and the acoustic basement.
Uplift of the acoustic...
A carefully calibrated primitive-equation model from 41°N to 48°N is used to study the poleward undercurrent off the US west coast. Chapter 2 describes poleward flow over the slope from Eulerian and Lagrangian perspectives. The model is robust, in the sense of several characteristics being qualitatively consistent with observational and...
Roger Linton is a newcomer to Lakeview. He and his wife, now live here with their two children. This interview was conducted on a picnic table in between his old house and a house that’s currently being built. In the background are chickens, birds, as well as several deer. Accompanying...
In an attempt to understand the phase equilibria and petrogenesis of MORB anorthitic plagioclase, Cr-spinel commonly hosted within anorthitic plagioclase has been investigated petrographically and compositionally. Based on spinel-anorthite relationships from three samples of plagioclase ultra-phyric basalt (PUB; Southeast Indian Ridge, Axial Seamount and West Valley Segment, Juan de Fuca...
Three broadly interrelated problems of critical significance to the proper interpretation of melt inclusion (MI) data are addressed in this thesis. The first issue, the petrogenesis of anorthitic plagioclase phenocrysts in MORB lavas, has relevance due to the presence of numerous MI in many high-An feldspars. This problem was addressed...
Prior to eruption at mid-ocean ridges, melts must travel through >6 km of crust from their origin in the mantle. The final composition of the melts is dependent on both the melting conditions and magmatic processes within the crust. While mid-ocean ridge basalt (MORB) glasses are commonly used to infer...
This study examines empirically the relationship of value
orientation to meanspiritedness. Meanspiritedness (a collection of
acts, thoughts and/or attitudes which are intentionally malicious)
was defined and a scoring method was designed. The management
level of self-interest in individuals as indicated by their value
orientation and religious orientation was examined. Additionally,...
Since the 1970s, tendon-transfer surgeries have been routinely performed for a variety of conditions such as stroke, paralysis, spinal atrophy, trauma, and birth defects. The surgery involves rerouting a tendon from a disabled muscle and directly suturing it to a functioning muscle in order to partially restore hand function. This...
The quality and cost of wood particle composites are substantially
determined by how the adhesive that bonds the composite is
distributed on the particles. Distribution of the adhesive is controlled
by the method of application. Currently the adhesive is applied by
spraying it onto the particles. It was hypothesized that...
Melt inclusions trapped in phenocrysts provide a unique picture of magma systems prior to modification by crustal processes. However, post-entrapment crystallization complicates their interpretation. Re-heating the phenocryst to the temperature of entrapment is a commonly applied method to recover the original melt composition. To understand the effects of re-homogenization, we...
The thermodynamic history of the Earth is preserved in the trace element record created through igneous processes. The ability to interpret that record depends on the accuracy and precision of numerical models that connect igneous processes with their geochemical consequences. This project answers three major questions concerning the relationship between...
Moral reasoning ability is a measure of the stage of development of an individual along a theoretical scale through which one moves over the course of their lifetime, developed by Lawrence Kohlberg and further modified by James Rest, who’s revised Defining Issues Test (DIT-2) will be used for our study....
Retention of engineering students is a problem for many universities, especially during the first year. The problem of introducing students to engineering while increasing retention rates has recently been addressed by many different universities. Implementing novel lab structures, adjusting the lecture to incorporate more effective teaching techniques, and using orientation...
A history of fire suppression, growth in the wildland-urban interface, and changing climate conditions, have created a fire regime in central Oregon that is growing in severity and intensity, putting more people and structures at risk and requiring a greater percentage of state and federal agency budgets to manage fires....
Due to the current cultural paradigm that incorporates the desire to be environmentally friendly and mitigate rising fuel costs, arguments about the cost of public transit systems, ridership rates, and methods to increase use are frequent topics of public policy concern. In response to these cultural and economic concerns, the...
A wireless power transfer system using inductive coupling was designed and implemented as part of a three-member project team. The system uses coupled magnetic fields at a frequency of 606kHz to transfer electromagnetic energy from a charging base to the batteries of portable devices. It succeeded in transmitting power to...
The Capacitive Touch Children’s Guitar is a fully functional electronic toy demonstrating
an application of Cypress Semiconductor’s CapSense touch sensing technology. It was
developed as a senior design project by myself and two other engineering students. I was
responsible for the guitar’s LED lights, main microcontroller and sound storage and...
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...
Nitrosomonas europaea (ATCC19718) participates in the biological removal of nitrogen from wastewater by oxidizing ammonia to nitrite, the first step in nitrification. This bacterium is sensitive to heavy metals (Zn²⁺, Cd²⁺, Cu²⁺, and Hg²⁺) and cyanide, compounds commonly encountered in wastewater treatment plants. Therefore, we characterized physiological and transcriptional responses...
Many modern embedded systems have multiple devices that require communication between themselves. Many serial communication standards have been created to provide communication between such devices. Modern serial protocols do have downsides. The ones that provide high communication speeds only allow for one device to act as a master and initiate...
To understand the forces exerted on structures during tsunamis, model cities are subjected to human-generated tsunamis. The study of vertical evacuation, wherein individuals could take refuge in the upper levels of strong buildings, has resulted in a growing need for a low cost wireless acceleration data logger. Such a device...
The passage of Measure 37 in 2004 was met with a great deal of controversy as a number of voters claimed the implications of the Measure did not represent their intentions for supporting the legislation. Namely, significant opposition was aimed towards the Measure 37 claim which offered landowners financial compensation...
A Cell Phone Audio Controlled Point of Sale system was designed and built for an undergraduate electrical and computer engineering senior design project. The system was designed to enable a user to transfer data from any cell phone to a point of sale device using audio tones. The project involved...
Fair value accounting has become a very popular and controversial topic in light of the 2008-2009 liquidity crisis in the United States. Fair value, also called mark-to-market, implies that assets and liabilities get measured and reported in firms‘ financial statements at market value as opposed to historical value. This study...
Photobiological hydrogen production from live cells of the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in silica gel was investigated. Hydrogen is a dense energy carrier with potential to reduce dependence on fossil fuels, provided a renewable and sustainable means of production can be achieved. Under certain conditions, Synechocystis sp. PCC...
An evaluation was made of factors contributing to the service
failure of a 12 inch diameter cast iron water pipe in Pendleton, Oregon.
The quality of the pipe was found to be acceptable when compared to the
acceptance limits established by the American National Standards
Institute, Inc. However it exhibited...
In the continuing effort to reduce time spent in the product development cycle many industries
have realized the benefits of rapid prototyping. Within a few hours a design engineer can turn a
computer model into an actual three-dimensional object allowing customers, engineers and
marketing agents to evaluate a product early...
This study examined the role of acid- sensing ion channels (ASICs) in interneuron synaptic modulation. ASICS are ultra fine discriminators of acidic conditions in the neuronal microenvironment. Each ASIC subunit isoform has innate, subtly different electrophysiological properties and tissue distributions. Structurally, ASICs may form homo- or heteromeric channels, yielding combinatorial...
As the Tekbots program expands into senior and graduate level classes at Oregon State University, so does the need arise for more complex learning platforms. These complex hardware platforms cannot be adequately tested in a manufacturing environment as we have done previously. Also, due to their complexity, these platforms require...
The thermophilic cyanobacterium Thermosynechococcus elongatus was examined for the ability to sequester CO₂ while producing hydrogen (H₂), polyhydroxybutyrate (PHB), lipids, and glycogen. H₂ was produced at a maximum rate of 188 nmol H₂ mg Chl a⁻¹ hr⁻¹. Hydrogen production occurred in the presence of methyl viologen but the cells were...
This study uses the Health Impact Assessment approach to determine the health impacts of allowing accessory dwelling units in Benton County, Oregon. A literature review presents the health benefits of accessory dwelling units in urban areas and identifies the potential negative health effects in rural areas. Five accessory dwelling units...
Oregon, much like the nation, has historically had a paradoxical relationship to migration. Oregon is famous for the Lewis and Clark expedition and the Oregon Trail. It is, and always has been, greatly affected and inspired by interstate migration yet each successive generation has been less than welcoming to further...
Not all experiences in physical activity, exercise, and sport are positive. Losing, getting injured, making a mistake, and not measuring up can all elicit a variety of highly negative emotions, including shame. To make matters worse, individuals often cope with shame in maladaptive ways––magnifying, suppressing, or ignoring the experience––which can...
"The MSC was created through the impetus of three needs. Wayne Burt of the newly formed Oceanography Department needed dock and ship support facilities for his NSF-funded research vessel on the coast. Roland Dimick of the Fisheries and Wildlife Department needed to expand his small bay research lab located at...
Vibrio marinus, strain MP-1, was shown to grow from pH 6.7
to 8.5, with an optimum at 7.3. Growth was inhibited below salinity
10%₀ and above 60%₀ . The upper temperature limit of
growth was 20 C, and growth was very rapid with aeration at 15 C.
Heating of the...
As the management of range lands is intensified or as improvement
activity is increased, a critical need is seen to refine the
understanding of the ecology of these lands. If soil surveys on range
lands are to be meaningful and useful, the relationship between the
fundamental ecological units and the...
Counselor education programs traditionally have student counselors role-play therapy sessions to enhance skills in rapport building, aligning with a theoretical orientation, and other essential communication skills. Students, however, are often left to determine their own choice of words when engaging in these practice sessions, and consequently, experience uncertainty regarding how...
For data following a balanced mixed Anova model, the standard Anova method typically leads to exact F tests of the usual hypotheses about fixed effects. However, for most unbalanced designs with most hypotheses, the Anova method does not produce exact tests, and approximate methods are needed. One approach to approximate...
This thesis describes the results of a linear stability analysis conducted on a simulated wind-forced ocean front. The ocean surface boundary layer regulates exchanges between the ocean and atmosphere, and the presence of turbulence in the surface layer can greatly impact climate and ocean life. Past research has shown that...
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Roger M. Samelson Eric D. Skyllingstad
ABSTRACT
This thesis describes the results
Experimental infection of mice with Candida albicans leads
to significant suppression of cell mediated immune responses.
We have characterized the nature of this candida-induced
suppression with formalin killed Candida albicans (FKCA) in the
yeast and mycelia' phase. Mice (BALB/c or C57B1/6J) treated
with FKCA exhibited a reduction in the T-cell...
Successful ecosystem restoration requires an understanding of the ecological processes directing succession. One of the challenges in the semi-arid grasslands of western United States is replacement of native species by invasive annual grasses. Solutions to this problem require identifying and manipulating ecological processes that direct succession to favor desired vegetation....
The purpose of this investigation was to determine whether sex-role
identification differences among college students were related to place
of residence, and if so, whether certain factors affect these
differences. Six hypotheses were developed. The study sought to
ascertain if sex-role identification is related to certain dimensions of
peer association...
The influence of planting patterns and plant spacings on grain
yield in field corn (Zea mays) was studied at the Oregon State University
Botany and Plant Pathology Field Laboratory near Corvallis,
Oregon in 1969. Plant characteristics and yield components studied
included plant height, ear height, number of ears, ear weight...
Modifications of an ocean model are described, as the objective for which the model was used changed to study the kinematics and dynamics of an eastern-boundary poleward undercurrent.
Many methods in use today for the isolation, purification, and
identification of the staphylococcal enterotoxins involve lengthy
steps with significant loss of enterotoxin, are subject to interference
from contaminating sample components, and lack sufficient specificity.
Culture extracts of enterotoxin producing Staphylococcus
aureus strains (enterotoxins A-E), crude enterotoxin preparations
(enterotoxins A-E),...
The hazards-of-place model of vulnerability to environmental hazards posits that vulnerability has biophysical and social components. While biophysical characteristics are important in predicting locations of elevated wildfire risk, the social characteristics of human communities may help us predict locations of elevated wildfire impacts. We examine the relationship between biophysical and...
The mechanical properties of materials at cryogenic temperatures
have been the subject of increasing interest during the past few
years, although very little actual materials testing has been done at
extremely low temperatures because of the high cost and low heat of
vaporaization of liquid helium. Recently, the Department of...
This thesis describes the design and implementation of a motor controller that is a customizable and cost effective replacement for the motor controllers used by Edwards Robotics Company (ERC). Extensive research of comparable products available in the market was conducted. The research formed the basis for the design specifications of...
Photobiological hydrogen production -- the use of photosynthesis to split water into hydrogen and oxygen -- presents an opportunity for efficient and large-scale solar biofuel development. One of the major challenges in this area is competition for reductant between the hydrogen-evolving hydrogenase enzyme and other metabolic pathways. In this work...
The mathematical and physical connections between three different ways of quantifying linear predictability in geophysical fluid systems are studied in a series of analytical and numerical models. Normal modes, as they are traditionally formulated in the instabilities theories of geophysical fluid dynamics, characterize the asymptotic development of disturbances to stationary...
The purpose of this investigation was to determine whether
certain variables have significant bearing on the education of adult
undergraduate students. During the 1970's Pace (1977) and Shaver
(1978) suggested that the "quality of effort" that college and
university students invest in their own learning and development is a
key...
The purpose of this study was to explore possible differences
in value patterns of students residing in four types of university living
environments--residence halls, Greek houses, cooperatives, and off campus
dwellings. The Rokeach Value Survey was utilized as the
major measurement tool for identification of the value patterns of
students....
In 2011, a study by Freeman and Wornell uncovered that social service providers in Klamath County believed Native American children experiencing maltreatment might be slipping through the cracks. In an effort to find out how to better serve these children and their families, the current study involved interviews with 11...
The two-fold purpose of this study is (1) to determine
differences in perception of counseling and guidance needs
between community college bound high school seniors,
community college counselors, and chief student services
administrators, and (2) to establish the nature and priority
of counseling and guidance needs of community college bound...
The long-term evolution of Gaussian eddies is studied in an equivalent barotropic model using both linear and nonlinear quasi-geostrophic theory in an attempt to understand westward propagating satellite altimetry tracked mesoscale eddies. By examining both individual eddies and a large basin seeded with eddies, it is shown that long term...
The purpose of this study was to examine the
relationship between parental attitudes and student
attitudes toward the consumption of alcoholic beverages,
between parental attitudes toward the consumption of
alcoholic beverages and the reasons students drink alcoholic
beverages, and between parental attitudes toward the
consumption of alcoholic beverages and the...
The purpose of this study was to examine the relationship between career development and locus of control as
they relate to barriers encountered in career development.
The sample included 144 students in the engineering
program at Oregon State University. The Rotter Internal-
External Scale and the Career Development Inventory (Form...
This thesis describes the design and implementation of a Bluetooth controlled blimp with autonomous capabilities through Dead Reckoning. Reasonable research was conducted on current autonomous systems, wireless communication techniques, and suitable microprocessors that could handle the required processing. Building a remotecontrolled blimp requires a light understanding of mechanics to build...
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Roger L. Traylor
This thesis describes the design and implementation of a Bluetooth controlled
The morphology and genesis of soils of the Willamette series
and of some Willamette-associated soils and their relationships to
geomorphic surfaces were studied in an area near McCoy, Polk
County, Oregon. Influences of regional extent, such as climate and
parent material, were related to the soils and landforms. The soils...
The purpose of this research, expressed in two coequal parts,
was: to establish a forecast of developments and an articulation of
policy options vis-a-vis postsecondary student consumerism; and to
determine if interest groups of experts differed significantly in
their evaluations of the aforementioned developments and policy
options.
The Delphi technique...
This research was undertaken to identify variables
that accounted for major changes in academic performance
between high school and college. Differences between
predicted and actual college GPA were used to classify
students as gainers or decliners among a group of
sophomores and a group of seniors at a medium-sized
research...
The purpose of this study was to investigate the relationship between moral development and year in school, gender, and personality type for university undergraduates. Moral development was measured by the Defining Issues Test (DIT) and personality was assessed using the Myers-Briggs Type Indicator (MBTI). The sample consisted of 320 freshmen,...
The sudden failure of metal structures under load, which has
been a design problem for many years, is characterized by a crack
propagation rate which approaches the speed of sound in the material.
These failures, which are often known as catastrophic fractures,
may be divided into two types which depend...
In the past decade considerable research in several disciplines has
been oriented toward the design of optimal capacity expansion plans for
water resource systems. The emphasis of most of these efforts has been
directed toward minimization total cost outlays in project planning.
This focus somewhat limits the full applicability of...
The sexual harassment of women by men is a social phenomenon that exists in academia as well as business and industry. It has only recently been recognized as a significant social problem. The purpose of this study was to determine if men who have a high proclivity toward sexual harassment...