Of 149 wild animals from two western Oregon river drainage
areas and other localities in which "salmon poisoning" disease (SPD)
is enzootic, including ten mammalian and two avian species, 79
harbored Nanophyetus salmincola, the SPD vector. The shorttail
weasel, Mustela erminea; river otter, Lutra canadensis; spotted
skunk, Spilogale putorius; Norway...
The smartphone is changing the way individuals interact with one another in society. Given the instant accessibility and multitude of socially iconic features, the contemporary handheld device grants users an unprecedented level of connectedness. However, despite the new breadth of access, perhaps the depth of the resulting social networks is...
Full Text:
AN ABSTRACT OF THE THESIS OF
Michael J.C. Yee for the
John Wesley Powell worked actively for public land system
reform while a director of geographical and geological surveys in
the West from 1869 to 1894. Although this has won him acclaim as a
conservationist, the basis of Powell's linkage of reform with
scientific work is poorly understood.
A study of...
It is desirable to be able to describe an automobile mathematically
because of the large number of variables which affect automobiles'
handling characteristics and of the high cost of building prototypes.
A mathematical analysis facilitates the construction of a
few prototypes whose configurations look most promising.
Equations of motion were...
Agricultural economists have devoted considerable attention to
the financial stress situation of agricultural producers. Many
studies have been conducted in various regions of the U.S. in an
attempt to better understand the causes of the problem. The costs
associated with farm financial stress imply corresponding benefits to
be realized by...
Cyclopropenoid fatty acids (CPFA) are natural components of
cottonseed oil, a major food oil in the United States. The ability of
CPFA to cause abnormal biochemical and physiological effects when
fed to laboratory and farm animals has prompted an investigation of
their effects on mice.
Between 0.05 and 0.55% CPFA...
Cellulosic ethanol production for transportation fuel is one source to help satisfy the increasing worldwide demand for energy and depletion of the fossil fuel supply. Evaluating potential production from plants and waste in Oregon, Washington and Idaho is the purpose of this study. Reed Canary grass, Annual Ryegrass, wheat straw,...
Two perovskite materials (Bi0.5(A)0.5)(Sc0.5Nb0.5)O3, where A = K+ and Na+ were synthesized phase pure for the first time. Their structures were determined by indexing synchrotron X-ray diffraction data and subsequent combined Rietveld refinement on neutron and synchrotron X-ray diffraction data revealing significant disorder on the A-sites of these materials. A...
A 2014 Pew Research poll revealed large gaps between public opinion and scientific opinion over environmental and biomedical issues (Funk and Rainie). Similarly, a number of recent popular books have described a growing public mistrust in scientific expertise (Mooney; Storr; Specter). Why is it, then, that so much of the...
Field studies designed to study residual effects from fertilizer
molybdenum were initiated in September 1971 on established grass-clover
pastures at ten sites in Western Oregon. Treatments were 0.0
and 1.12 kg molybdenum /ha on plots receiving 0-35-0-20S fertilizer (elemental sulfur-S) and 0.0, 0.56, 1.12 and 2.24 kg molybdenum /ha on...
Current protein immobilization techniques lack defined control over protein orientation. Protein orientation is important for making biosensors and biomaterials that are sensitive and efficient and can be crucial for designing some devices such as immunosensors or direct electron transferring biocells. A new method of protein immobilization is proposed that takes...
Sulfur-coated urea (SCU) is a slow release nitrogen fertilizer
manufactured by the Tennessee Valley Authority. Urea granules are
sprayed with molten sulfur, then holes in the sulfur coating are sealed
with a layer of wax sealant. The sulfur coatings are mixtures of
amorphous and crystalline allotropes of sulfur. Coating thickness...
The most important purposes of this study were to: (1) determine
the extent of cooperation and coordination that currently exists in
selected community colleges which have community school programs
in their college districts, and (2) clarify the multi-roles of community
schools and of community education in community colleges. Other
purposes...
The purpose of this study was to evaluate a contextual model for integrating lessons
from the LifeKnowledge curriculum into the agricultural science and technology (AST) course content. This was measured using the National FFA Organization’s online precept indicator which is part of the LifeKnowledge 3.0 curriculum. Ninth grade students at...
The LifeKnowledge curriculum is a recent initiative of the National FFA Organization to develop key learning precepts in agriculture education students. This material utilizes cutting-edge teaching techniques in lesson plans designed to develop leadership, teamwork, personal development, and communication abilities in students. This project surveyed current agriculture teachers in Oregon...
State Departments of Transportation (DOTs) are the primary owners of roadway infrastructure in the United States. Many of the employees of state DOTs work on roadway work sites, putting them at disproportionately higher risks of injury or fatality. A review of the literature determined that a combination of policies, standards,...
This thesis addresses a common knowledge gap that was identified amongst the Society of Automotive Engineers (SAE) competition design teams at Oregon State University. Students that join the SAE teams at Oregon State University typically do not have experience using physically collected data during a design process. This leads to...
Aerial photography provides a method of analyzing dispersion
of wastes that are discharged into the ocean. This method is more
comprehensive than conventional boat sampling in dispersion studies.
The photographic technique permits waste concentrations to be
measured throughout the plume in one instant; thereby allowing the
diffusion analysis to be...
A sequence of soil profiles was sampled along a climate-vegetation transect on the dated Mazama pumice fall in central
Oregon. The <2 μ size fraction from each sample was characterized
with respect to the relative significance of amorphous and
crystalline components, and the individual minerals of the latter
group were...
Although perceived-risk curriculum, that is, where the learner experiences effects of eustress (positive stress), has been used in Arts or outdoor activities, it has not been used in school classrooms. Milkman’s 1996 studies of after-school Project Self Discovery demonstrated that at-risk students lessened their adverse risky behaviors, such as substance...
Various hypervalent iodine compounds were evaluated as reagents
for intramolecular phenolic oxidative coupling. It was found that
phenyliodine(III) bis(trifluoroacetate) was effective for the coupling
of the monophenolic substrate 13a to 14a under neutral conditions.
Vanadium oxytrifluoride and hypervalent iodine compounds were compared
as oxidants for the conversion of 32 to...
Within the past several years the technology of high-throughput sequencing has transformed the study of biology by offering unprecedented access to life's fundamental building block, DNA. With this transformation's potential a host of brand-new challenges have emerged, many of which lend themselves to being solved through computational methods. From de...
This dissertation addresses issues concerning the behavior of firms, which has significant effects on performance. In the first study, we empirically investigate the effect of the reduction in number of firms on price competition in the U.S. macro-brewing industry. The number of macro brewing firms decreased from 766 in 1935...
Eelgrass (Zostera marina) provides critical ecosystem functions and services and is a vital biogenic habitat on Washington’s marine aquatic reserves but its placement at the land-sea interface leaves it vulnerable to multiple environmental and anthropogenic stressors. In this study, published scientific literature is examined to identify thresholds of environmental stressors...
Proper nitrogen (N) management and variety selection are important for profitable hard red winter (HRW) wheat production in the dryland growing regions of northeastern Oregon. In these dryland systems, N management for grain yield and grain protein concentration (GPC) is challenging due to climatic and year-to-year variation in production environments....
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Michael D. Flowers
Proper nitrogen (N) management and variety selection are important
Diseases caused by parasites are recognized as significant sources of mortality in wild fish populations. I assessed the impacts of multispecies parasitism on a threatened stock of juvenile coho salmon (Oncorhynchus kisutch). A crucial prerequisite to this research was proper identification of parasites, which can be difficult for species lacking...
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Michael L. Kent
Diseases caused by parasites are recognized as significant sources of
"‘Biometrics is at the forefront in our agenda for homeland security,’ declared Asa Hutchinson, the Department of Homeland Security's undersecretary for border and transportation security, at the 2004 Biometric Consortium Conference” [11].
Flashy retinal scanning and voice activated computers were once considered technologies for science fiction movies and novels. Nowadays,...
Opakapaka (Pristipomoides filamentosus) is a snapper (family Lutjanidae) native to the waters around Hawaii. Recent population declines of this commercially important species have increased interest in the culture of this fish. Survival of this fish through the larval period in culture has been consistently low, usually not exceeding 2%. The...
Rockfish Conservation Areas (RCAs) are large areas closed to fishing in federal waters off the Washington, Oregon and California coasts. The Pacific Fisheries Management Council (PFMC) was responsible for the creation and regulation of the RCAs. The RCA boundaries were defined in 2002 to rebuild rockfish species declared as overfished...
The fact that measuring a quantum system reduces it to apparently classical behavior, eliminating the interference patterns that are a hallmark of quantumness, cries out for an explanation. That explanation has been provided by the recognition of decoherence,whereby the interference is destroyed by the very interaction that acquires information.We begin...
As the nonstop advancement of graphics hardware continues, new features are being added to the graphics pipeline on a regular basis. One of these advancements is called Pixel Synchronization, which allows a graphics programmer more power with certain types of data structures that may be accessed by multiple shader units...
This dissertation examines the impact of the German naturalist and literary figure Johann Wolfgang von Goethe’s ideas on twentieth century Anglophone plant morphology and biology. Goethe interpreted the organ forms of flowering plants as metamorphoses of each other. His literary, historical, and philosophical writings suggest themes of alienation from and...
The primary purpose of this study was to determine which factors related to adult 4-H volunteer empowerment in 4-H youth development settings. This study examined the relationship of adult 4-H volunteers’ perceived leadership styles of Oregon 4-H Youth Development Educators (YDE) to the adult 4-H volunteer sense of empowerment. In...
Substantial scientific investment has been directed towards understanding factors that influence distribution patterns and animals' remarkable ability for precise orientation and navigation, yet fundamental gaps in our knowledge remain. In my dissertation, I applied emerging genetic technologies to conduct a top-down and bottom-up investigation of animal movement and cue perception....
Pseudoloma neurophilia is the most common pathogen reported in zebrafish (Danio rerio) research facilities and is an important threat to the zebrafish model. This microsporidian parasite can cause clinical disease, but more importantly is a causative agent of non-protocol induced variation in research. Studies utilizing infected zebrafish, could potentially confound...
This thesis presents a linear programming package that uses an
algorithm and data storage method efficient enough to solve a medium
sized linear programming problem (250 variables and 100 constraints)
on a minicomputer with small core memory space (4000 bytes).
In this routine the problem is formulated by the use...
The melt intercalation of poly(ethylene oxide) (PEO) between layers of MoO₃ and MPS3 (M=Mn,Cd) is obtained by heating the ground mixture and LiₓMoO₃, KₓMn₁-ₓ/₂PS₃, or KCd₁-ₓ/₂PS₃. The products are characterized by powder X-ray diffraction (XRD). Below the melting temperature of PEO (66 °C), intercalation rates and yields are low. By...
This is an interactive, self explanatory computer
program on real roots of polynomials with real
coefficients. This program called POLYROOT has the double
feature of tutoring and problem solving. It allows the user
to enter on one line any polynomial with real coefficients.
Then, the user can find :
1....
Pure aluminum deformed in torsion (shear) at elevated temperatures reaches
a broad "peak" stress and then undergoes about a 17% decrease in flow stress with
deformation to roughly 1-2 equivalent uniaxial strain. Beyond this strain the flow
stress is approximately constant. The sources for this softening are unclear. The
suggested...
A special case of a parallel multiprocessor scheduling (MP) problem
is investigated. A set of jobs with a known process time and a.resource
requirement is scheduled on machines controlled by processors,and
the total changeover cost between jobs is to be minimized. Each processor
may control up to two machines and...
The maximum principle developed by the Russian mathematician,
L.S. Pontryagin is considered to be one of the most significant
contributions to the recent advances in mathematical optimization
techniques.
Unfortunately, most of the published literature on the application
of the maximum principle is in the field of control system design,
and...
Probability-based reliability methods have placed an increased emphasis on realistic simulation of structural behavior in bridge engineering. Uncertainty is present in every aspect of structural analysis. Aleatory uncertainties in the loading and load-carrying capacities, and epistemic uncertainties in mathematical idealization of bridge systems are the major contributors to uncertain structural...
Programming parallel machines has been a difficult and unrewarding task. The short lifespan of parallel machines and their incompatibility have made it difficult to utilize them. Our goal here is to create an environment for parallel computing which allows users to take advantage of parallel computers without writing parallel programs....
Some of the problems concerning the present educational programs
which confront the institutions of higher education are, reviewed.
Resources allocation is at the root of the issue.
Budgeting orientations are presented with special emphasis on
Planning Programming Budgeting Systems. PPBS is still in its
developmental stage in the field of...
Effects of stochastic variations of parameters in the planning
and design of a particleboard production system are studied. The
solution obtained from a linear deterministic optimization model is
compared against both the solution derived from the traditional
stochastic programming techniques and the distribution of optimal
objective function values obtained from...
A sampling criterion which provides a numerical relationship
between sampling rate and worst-case peak error for linear interpolation
of sample points is presented. The criterion, based upon the
second derivative of a waveform, is derived, its properties are observed
for a sine wave, and its applicability to complex signals is...
The World Trade Center disaster brought into focus, tragically, the need for well-designed evacuation systems in modem buildings. Today, designing an efficient evacuation system has become an integral part of designing large buildings. Simulation software enables an evacuation system to be evaluated. Modern day buildings, whether airports, auditoriums, public office...
In this report., we address the issues of translating MATLAB scripts into SPMD-style C programs. The resulting programs, when linked with our run-time library are suitable for execution on parallel computers. We describe the design of the compiler and improvements made to it in the current version. We also describe...
Regular structures such as PLA's are very
important to reduce VLSI design time. Interest in CAD
tools such as a practical reducing PLA generator is high.
This dissertation presents PRONTO as a practical, near-optimal
product term reduction method, whose general
heuristic approach consists of the following four steps.
First, select...
Microcomputers are being used in teaching and learning
mathematics. This paper examines ways that computers can be used
to enhance teaching in precalculus mathematics. The advantages of
computers discussed are: 1) instant access to graphs, 2) examples
that are not oversimplified to make computations manageable, 3)
encouragement of hypothesizing and...
A new class of information intensive applications is emerging [Fuch82;
Ohsu82] for which neither Artificial Intelligence (AI) nor Database technologies
alone are well suited. Database systems do not provide the general inferential
capabilities required for problem solving, while AI techniques have not been
adapted to handle massive amounts of structured...
The social and economic impacts of climate change on the Oregon Coast may be reduced if coastal managers begin planning now to put in place adaptation measures. Oregon Sea Grant conducted a web-based survey of Oregon coastal professionals to target climate change adaptation outreach and engagement efforts toward this audience....
There is a software gap in parallel processing. The short lifespan and small installation base of parallel architectures have made it economically infeasible to develop platform-specific parallel programming environments that deliver performance and programmability. One obvious solution is to build architecture-independent programming environments. But the architecture independence usually comes at...
It is possible to purchase, for as little as $10,000, a cluster of computers with the capability to rival the supercomputers of only a few years ago. Now, users that have little to no experience developing distributed applications or managing a cluster are in a position to do so. To...
Carbon and energy fluxes were measured with the eddy covariance technique
above two semi-arid ecosystems, ponderosa pine and juniper/sagebrush, located in
central Oregon. The two ecosystems have low LAI and a very open canopy structure.
The energy closure was ~70-80% at both ecosystems, equivalent to an imbalance of
150-250 W...
Resource Planning and Management (RPM) network is a graphical
representation of input-output relationships among activities and
resources within a system. Both resources (events) and activities
(decisions) are explicitly represented as nodes in all RPM networks.
Depending upon the relationships being depicted, RPM networks can
be classified into Relational (R), Precedence...
Realistic (ideally photorealistic) real-time rendering has remained an elusive goal in computer graphics. While photorealistic rendering has certainly been achieved at the expense of tremendous computational resources and corresponding rendering times; real-time rendering typically must accept a great number of compromises to achieve adequate performance, such as aliasing artifacts, the...
The objective of this thesis is to develop a tool
which can be used to implement query processing algorithms
produced by a query optimizer. The tool should have the
following properties:
(1) it should support a description of the query solution in a dataflow-like language,
(2) it should support data...
A waveform-preserving, variable time-delay system capable of
several milliseconds delay is described in this thesis. These considerably
long delays are achieved by judicious use of the relatively
low sonic velocity of gases. Initial system design criteria specified
a time delay of ten milliseconds and a signal bandwidth of 0-10 KC....
With the strong shift toward network-centric cluster-computing workload management has become increasingly important in both industrial and academic environments. To fully harness the distributed computing resources of the 32 PC's in our department, I developed a workload monitoring system together with a few utilities for users to submit either sequential...
Silver interlayers between maraging steel base metal were examined to evaluate mechanisms leading to ductile failure in constrained thin metals. The constraint of the maraging steel base metal during uniaxial testing of constrained thin silver results in a large hydrostatic tension component, a small von Mises effective stress, and negligible...
We describe a set of data flow techniques and code transformations that translate a single instruction stream, multiple data stream (SIMD) Dataparallel C program into a semantically equivalent single program, multiple data stream (SPMD) C program suitable for execution on shared memory multiprocessor computers, such as the Sequent Balance and...
A multi-phase methodology is proposed as an aid to
resource planning and management activities in a high
technology company faced with an uncertain marketing
future. An attempt is made to incorporate both quantifiable
and non-quantifiable factors.
The problem analysis phase of the proposed methodology
employs Resource Planning and Management (RPM)...
Public policy narratives and stories are often referenced by the media, politicians, advocacy groups, and across many disciplines in academia. Studies of social and political narratives support the notion narrative matters, but often lack systematic design capable of producing generalizable findings. The Narrative Policy Framework (NPF) has responded to this...
This research explores several novel approaches to improve visualization and segmentation
of point clouds acquired with 3D laser scanning. 3D laser scanning is used
in a wide variety of applications including surveying and mapping, transportation asset
management, facilities management, building information modeling, crime scene investigations,
cultural heritage and geologic instigations....
The main objective of this thesis is to investigate the microprocessor's
potentials to improve the productivity of Industrial
Engineers engaged in work design and measurement. More exactly, the
following four hypotheses were proposed and investigated:
(1) A Universal Time Data (UTD) structure could be used to
accommodate a variety of...
A new method is developed for solving linear optimization
problems based on the RPM network modeling technique which represents
the primal and the corresponding dual models simultaneously
upon a single graph. The network structure is used to eliminate
the need for explicit logical variables and to provide a graphic
tool...
A discrete multi-facility plant location algorithm developed by Basheer Khumawala is modified and applied to the location analysis of offices of the State of Oregon Health Facilities Licensing and Certification Section (HFLC). Choice of the algorithm is based upon a literature survey of available computational procedures which compares their relative...
Compaction of a horizontal microprogram is an attempt to
exploit fully the parallelism permitted by a given algorithm and data
processing structure in order to produce a short microprogram. B oth
viewpoints of the problem: the local compaction viewpoint which
deals with compaction within a straight-line segment, or a basic...
OSIRIS is an integrated information architecture which was developed at Oregon State University. SIDUR is the data model upon which the semantic level is based. The semantic level is the mediating level between user's information needs and the stored data. The advantages of providing a semantic database environment include flexibility...
Branch-and-Bound algorithms are developed to optimally
schedule static single- and multi-stage job-shop productions. The 'corollary' of the study is to experimentally verify the effectiveness of
branch-and-bound algorithms to overcome the "curse of dimensionality" due to the combinatorial nature of job-shop scheduling problems.
The static scheduling problem contemplated in this dissertation...
We present the results of a study of optical scattering and backscattering of particulates for three coastal sites that represent a wide range of optical properties that are found in U.S. near-shore waters. The 6000 scattering and backscattering spectra collected for this study can be well approximated by a power-law...
The aroma of milk has been often defined as bland and pleasant, yet characteristic. Conventional thermal processing of milk can certainly extend shelf life, but inevitably changes its flavor. High pressure processing has been suggested as an alternative for milk pasteurization with improved fresh flavor retention. The objective of this...
Despite years of research into human computer interaction (HCI), the environments programmers must use for problem-solving today—with separate modes and tools for writing, compiling, testing, visualizing, and debugging— derive their basic structure from historical accident, and take little advantage of HCI research into the cognitive issues of programming. Neglecting these...
A decision support system (DSS) incorporating domain
expertise guides, tutors, and consults a decision maker in
opportunity, problem, and crisis identification activities. The
objective for the system is to promote improved decision making.
Using an "Independent Groups" design, an experimental study was
conducted to investigate the effects of DSS use...
This project presents a new, and more versatile, method for performing Relief Mapping (also known as Parallax Occlusion Mapping), utilizing rates of change in texture coordinates across a polygon surface to calculate the texture sampling offsets used in the ray-tracing portion of the Relief Mapping algorithm. This new technique relies...
The purpose of this study is to develop an analytical framework for identifying and evaluating conditions that precipitate currency devaluation like those experienced by Mexico in 1994. This study develops a framework of financial and macroenvironmental indicators that point to potential currency devaluation in the future. Some of these indicators...
The problem of this study was to determine the relationship
between selected autobiographical data and the personality characteristics
of high school basketball players.
The Athletic Motivation Inventory (AMI) measured the personality
traits of 150 high school basketball players. The Individual Data
Questionnaire was used to identify background characteristics for
comparison...
Septoria canker remains the most important disease of poplars in intensively managed forest plantations. Genetic resistance has long been considered the best way to manage for this disease. Transgenic resistance mediated by RNA silencing against pathogens and pests (HIGS: host-induced gene silencing) has shown promise in other pathosystems but has...
This document describes the need for, and design of, diagnostic software that provides circuit verification, fault isolation, and troubleshooting aids. The difference between verification software and true diagnostic software is explained. A modular design of diagnostic software is proposed, consisting of a series of 3-part tests, a test manager, results...
A remote Digital Signal Processing (DSP) lab for the Internet is developed to give students the opportunity to work together online with a remotely located Digital Signal Processor (DSP). Students in different locations can work together with the DSP as if they were present in the lab. To make this...
Volatile hydrophobic compounds (HOCs) brought into soil and sediment
systems represent a serious threat to the environment. Dissolved
organic carbon (DOC) may exert an important influence over the total
aqueous solubility and mobility of organic pollutants through their
incorporation into micelles or the formation of soluble complexes.
To date, however,...
The purpose of this study was to determine if Holland
vocational personality type similarity and/or traditional/
egalitarian family ideology affected marital satisfaction
among dual-career spouses.
The population for this study was Oregon State
University graduate students and faculty, married to
spouses who had career aspirations outside the home.
Holland personality...
Systems Tableau is suggested as a convenient tool for the
integration of the three phases of systems theory: the synthesis of
a model from the analysis of a system; the evaluation of the model;
and the decision-making process for the design and control of the
resulting system.
From a basic...
This is a listing of both PhD and Master's· theses relating to the areas of forestry issued during the period from July 1976 to June 1981. The
list is arranged first by state, then by college or university within each state. Authors of theses are arranged alphabetically under each of...
There have been many changes in American society since the 1960's dealing with civil rights and the labor force. These areas, in turn, have influenced and been influenced by changes in education such as Title IX and Title II. The purpose of this study was to investigate the sex-equity characteristics...
This thesis will cover my work relating to the developing field of terahertz (THz) science and technology. It will present experimental and theoretical studies investigating the optical and electrical properties of various material systems using novel THz imaging and spectroscopy techniques. Due to its low photon energy, THz imaging and...
World food markets are becoming increasingly interconnected as firms seek to sell their products not only in domestic markets but in international ones as well. Moreover, processed and high-value consumer-oriented products represent an increasing share of total agricultural exports. This growing international market may have implications for the future competitiveness...
Moisture loss from fresh fruits results in lost revenue to producers, storage/packing companies, distributors, and increased prices for the consumer. Improved methods of storage and handling are necessary to help prevent moisture loss and retard spoilage. A literature review was conducted to improve knowledge on past and current studies involving...