We evaluated the extent to which the average metabolic activity of open ocean bacterioplankton
changed during 2 to 3 d incubations of 1 μm filtered seawater at in situ temperature. Indices
of bacterial activity during incubation experiments were compared to those of in situ bacterioplankton,
which were repeatedly sampled at...
Alternating temperature (22°C / -1°C) pretreatments were effective for
increasing cold hardiness and recovery of cryopreserved meristems. Combining low
temperature pretreatment with abscisic acid (ABA) or sucrose treatments reduced the
time required for optimal cold hardiness of meristems. Desiccation tolerance was
directly correlated with increased cold hardiness and recovery of...
Evaporation was studied along the Middle Fork of the John Day River in northeastern Oregon. Evaporation pans and various meteorological sensors recorded data at nine sites during the summer of 1998; measurements were made at each site over a 3-4 day period. A Dalton-type evaporation model was produced using water...
Riparian zones of Pacific Northwest forests have high species diversity and abundance and act as an important interface between the aquatic and terrestrial ecosystems. In addition, riparian zones comprise a significant portion of the total buffer zone established during commercial forest production to protect aquatic ecosystems from adjacent management activities....
In an effort to understand the basis for sulfite detoxification in S. cerevisiae,
the functions of two genes were analyzed. SSU1, which encodes a plasma membrane
protein, was found to be required for efficient sulfite efflux. FZFl-4, a dominant
allele of a transcriptional activator of SSUl, was also found to...
Oregon's watershed councils are local, non-regulatory, collaborative forums charged
with the recovery of endangered salmon and improving water quality under The Oregon Plan for Salmon and Watersheds. Private forest landowners, given their prominence is owning riparian areas, are central to success of these efforts. Using a statewide survey of watershed...
Virus contamination in a potato breeding program can seriously
disrupt the variety development process. Experiments were conducted
from 1989 through 1993 to: evaluate the extent to which Potato
Leafroll Virus (PLRV) and Potato Virus Y (PVY) can invade a breeding
program, determine viral spread within hills and within individual
tubers,...
Modern superscalar processors exploit instruction-level parallelism (ILP) by issuing multiple instructions in a single cycle because of increasing demand for higher performance in computing. However, stalls due to cache misses severely degrade the performance by disturbing the exploitation of ILP. Multiprocessors also greatly exacerbate the memory latency problem. In SMPs,...
The increased US domestic production of surimi from the US Pacific Coast after 1977 is a major consequence of the US's extended fisheries jurisdiction to 200 nautical miles. It is only one consequence, however, whose nature can best be understood by examining the surimi market in the context of what...
The pigments of blackberry fruit were investigated by analytical and preparative high performance liquid chromatography (HPLC) to characterize anthocyanin patterns in commercially important blackberry (Rubus eubatus) cultivars and selections. Five anthocyanin pigments were detected in Evergreen blackberry and they were identified as cyanidin-3-glucoside, cyanidin-3-rutinoside, pentosecyanidin derivative and two acylated cyanidin...
Three studies were conducted to evaluate: 1) rotationally grazed forage for late-summer stockpiling; 2) effects of lactation on self-fed supplement intake; and 3) influence of cow age on hand-fed supplement intake. For the first study, treatments consisted of non grazed, 2X and 3X grazed. Crude protein of forage grazed 3X...
Streptomycin resistance in both gram-positive and gram-negative bacteria is usually caused by a single mutation in the rpsL gene. The rpsL gene encodes the S12 protein of the ribosomal complex. The rpsL genes of various bacteria have consensus regions in their sequences. Primers were designed from these consensus pockets and...
This research project examines the growing informal sector of Ukrainian economy and the way global economic changes affect women's lives. It has been noticed by many Western researchers that women have been among the hardest hit by economic restructuring in Eastern Europe. Marginalization from the official labor force led a...
The microprocessors will have more than a billion logic transistors on a single chip in the near future. Several alternatives have been suggested for obtaining highest performance with billion-transistor chips. To achieve the highest performance possible, an on-chip multiprocessor will become one promising alternative to the current superscalar microprocessor. It...
The Independent Multidisciplinary Science Team (IMST) convened 19 regional leaders in salmon management and research in a workshop on Goals for Recovery of Oregon Coastal Native (OCN) Stocks on August 4-5, 1999. The main purposes of the workshop were to 1) define the concept of recovery and 2) to identify...
In a field study, seedlings of Arizona pine (Pinus arizonica Engeim.), Apache pine (P. engelmannii Cam), and Durango pine (P. durangensis Mart.) were planted in an one open area and in canopy gaps of four forested sites of a pine-oak forest in the Sierra Madre Occidental in the state of...
Cellular Manufacturing Systems (CMS) have claimed many advantages over traditional job shop processes. Some of the advantages reported by several users of CMS are reduction in throughput time, reduction in WIP inventory, improvement in product quality, faster response time to customer orders, shorter move distances, increase in manufacturing flexibility, and...
State parks in Oregon provide important sites for visitor recreation and natural resource education. With the increasing number of visitors to Oregon coastal parks, tide pools and beach areas, there is growing need for site-specific marine education to enhance stewardship, interpretation and safety knowledge. The Oregon Sea Grant Program and...
The development of winter 6-row malting barley varieties is an objective of the OSU program. The program's winter germplasm is quite susceptible to Barley Yellow Dwarf Virus (BYDV). The program recently released the spring 2-row variety Orca, which carries the Yd2 gene for BYDV resistance. The objective of this project...
The Buraku people have been segregated, oppressed, and discriminated against throughout Japanese history. The Japanese can dismiss the Buraku issue because of assimilation theories, the belief in homogeneity, and passive attitudes by the Buraku people. The Buraku Liberation League (BLL), which has fought for equal rights on behalf of the...
This study describes the experience of homelessness and pregnancy for seven women and their partners in Lane County, Oregon. Homeless pregnant women provide a unique challenge to health care providers and social workers. These women are at increased risk for many negative factors that could affect their pregnancy outcomes. The...
Columbian white-tailed deer (Odocoileus virginianus leucurus, CWTD) are a geographically isolated and federally endangered sub-species for which there is a paucity of recent ecological information. I described and examined sources of variation in spatial use patterns (i.e. home range, areas of concentrated use, and movements), habitat associations, and survival for...
We developed and investigated machine learning methods that require
minimal preprocessing of the input data, use few training examples, run fast, and
still obtain high levels of accuracy.
Most approaches to designing machine learning programs are based on the
supervised learning paradigm – training examples are chosen randomly and given...
A spatially explicit population model written in C++ programming language is used in
this study examining the population dynamics of the Desert Tortoise (Gopherus
agassizii) in the California Mojave Desert. The model is constructed with hexagonal
divisions of space, and with one-year increments of time. Four thematic maps: vegetation,
soil...
Winter wheat is commonly grown in dryland cropping systems in the Pacific Northwest region of semi-arid eastern Oregon. For agronomic, economic, and environmental reasons, it is important to understand the long-term sustainability of such dryland systems. The objective of this study was to evaluate the long-term effects of tillage, nitrogen...
This report addresses the design and implementation of an internet-based grading tool for the "Translators" course. The motivation is to avoid exposing the instructor's Java byte-code to possible reverse-engineering tools and enable students to submit their homework virtually from any machine across the internet. This tool is intended to replace...
The Communication Decency Act became law in 1996 and was
immediately challenged on Constitutional grounds. It was subsequently declared
unconstitutional based on the First Amendment guarantee of free speech. Using
Fantasy Theme Analysis, an analysis of the dramatic elements of the key players
was accomplished. The dramatic elements of Overall...
This thesis presents a case study of applying machine learning tools to build a predictive
model of annual infestations of grasshoppers in Eastern Oregon. The purpose of the
study was two-fold. First, we wanted to develop a predictive model. Second, we wanted
to explore the capabilities of existing machine learning...
Most studies of plant disease epidemiology have focused on epidemics in host
populations composed of a single genotype. But crop plant diversity can be a useful
means of improving the deployment of resistance genes. In a series of experiments with wheat stripe rust and potato late blight, we studied factors...
With the loss of field burning the amount of crop residue that remains in perennial ryegrass fields has increased. As the amount of crop residue remaining in the field increases so does annual bluegrass. This has resulted in the increased use of herbicides to control annual bluegrass. However, this increased...
This study investigates the atmospheric flight dynamics of a munition system and the effect of a tether reel resistance mechanism for limiting the impact that the unreeling process has on the munition system. The munition system consisting of two projectiles connected by a tether line is released from an aircraft...
This study shows how patronage framed and fashioned the careers of Thomas Hobbes and
his patron William Cavendish, the earl of Newcastle. Newcastle's protection allowed
Hobbes to articulate heterodox ideas without immediate fear of reprisal. It also enabled
him to solidify his status as a gentleman and the intellectual equal...
The purpose of this document is to
help guide the Council toward its goals of improving, maintaining and
protecting watershed health, and fostering stewardship and
understanding of the watershed.
This biological assessment (BA) documents the potential effects of existing Forest Service (FS) Land and Resource Management Plans (LRMPs), or 'Forest Plans' and Bureau of Land Management (BLM) Land Use Plans (LUPs) on the Canada Lynx (Lynx canadensis), hereafter referred to as the lynx. LRMPs and LUPs are collectively referred...
Watershed assessment is a process for evaluating how well a watershed is working. The purpose of this assessment was to determine how natural and human-induced changes have impacted the sustainability of salmon populations in the Nehalem River Watershed. Both historical and current information is included regarding the watershed’s ability to...
Discusses what land use practices can impact riparian areas and the techniques landowners, volunteers, and professional resource managers can use to improve and protect riparian function.
A simple theory is presented for steady geostrophic circulation of a stratified fluid in a rectangular basin with a circumpolar connection. The interior flow obeys the β-plane Sverdrup vorticity balance, and the circulation is closed by geostrophic boundary currents. The circulation is forced by surface thermal gradients and wind-driven Ekman...
Animals respond to stressful situations with increases in plasma levels of
glucocorticoid stress hormones. These hormones originate from the adrenal cortex
in response to stimulation of the hypothalamic-pituitary-adrenal axis.
Glucocorticoids (corticosterone in reptiles) function to mobilize energy and
suppress unnecessary functions until the stress passes. Among these immediately
unnecessary functions...
present a unique modeling approach to investigate the
potential impacts of future land use alternatives on amphibian population
dynamics in two agricultural watersheds in central Iowa. An individual-based
spatially explicit population was used to predict the consequences of alternative
landscape design and management for populations of four amphibian species. The...
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on RIV Revelle during cruises R9711 (30 November 1997 to 3 January 1998) and R9802 (13 February 1998 to 19 March 1998). The cruises were conducted as part of the Southern Ocean JGOFS (Joint Global Ocean Flux) Antarctic...
This paper discusses current network technologies and protocols and presents a simulation study of the most common networking protocol used today, TCP/IP. The TCP/IP protocol stack has many inherent problems that will be shown through this simulation study. Using the SimpleScalar Toolset, the significance of the data copying and checksumming...
This thesis is a collection of six essays with interconnecting elements and themes. Two overriding themes which pervade the collection are the search for spiritual wholeness and the relationships between humans and their environments. The essays document my recent explorations of and experimentations with the "creative nonfiction" genre. have worked...
Improvements have been made to the spatial coherence method for automatically determining cloud-free ocean radiances in satellite imagery by incorporating the spectral signatures of reflecting surfaces. The spatial coherence method relies on the fact that small-scale cloud-free regions typically exhibit uniform emission and uniform reflection. While small-scale overcast regions typically...
We present velocity observations from a shipboard acoustic Doppler current profiler (ADCP) on RJV Revelle during cruises R9710 (20 October to 23 November 1997) and R9801 (9 January to 7 February 1998). The cruises were conducted as part of the Southern Ocean JGOFS (Joint Global Ocean Flux) Antarctic Polar Frontal...
Bistable properties have been reported in CdF₂ and CdTe systems doped with In and Ga. It is characteristic of these materials that the excited bistable state can be accessed by optical excitation.
In this work, pulsed nuclear magnetic resonance (NMR) in conjunction with illumination at low temperatures has been used...
One of the most powerful and life-changing events that can occur in the life of a family is
the death of a child. Researchers who have studied death and bereavement suggest that a
child's death has a dramatic impact on parents. However, little is known about the ways
in which...
Lepidium latifolium L. (perennial pepperweed, LEPLA) is an exotic invader throughout western North America. At Malheur National Wildlife Refuge (MNWR) in southeast Oregon, it has invaded about 10% of meadow habitats that are important for wildlife. This study's objective was to determine the most effective and least environmentally harmful treatment...
While replacement of dietary saturated fat with unsaturated fat has been advocated
to reduce cardiovascular disease risk, diets high in polyunsaturated fatty acids
(PUFA) could increase low density lipoprotein (LDL) susceptibility to oxidation,
potentially contributing to the pathology of atherosclerosis. To assess in vivo lipid
peroxidation and susceptibility, of LDL...
This research investigates the role of Attention-Deficit/Hyperactivity Disorder (ADHD) in the life experiences of University Student-Athletes. This qualitative study employs a naturalistic and grounded paradigm in an effort to capture the essence of these experiences. Participants are four student-athletes from Oregon State University who play intercollegiate athletics in the Pac-10...
We tested a synthetic bacterio-opsin (bO) gene derived from Halobacterium halobium for its effect on disease resistance in transgenic poplar hybrids, and assessed a genetic system for controlling expression of this gene. In tobacco the bO gene caused necrotic lesions similar to an induced hypersensitive response (HR), increased levels of...
On March 24, 1999, the National Marine Fisheries Service (NMFS) published its final decision to list the Upper Willamette River evolutionarily significant unit (ESU) of chinook salmon as threatened under the Endangered Species Act (ESA). The effective date for the final listing was May 24, 1999, and the ESU is...
Geomorphic response to watershed disturbances commonly results in
alterations of landforms. Subsequent geomorphic recovery is dependent on the ability
of flows to entrain, transport, and organize inorganic and organic material on hillslopes
and in channels. This research analyzed changes in sediment production, channel
structure, and channel organization following disturbances in...
Power optimization becomes more and more important due to the design cost and reliability. Sometimes high power consumption means expensive package cost and low reliability. The first step in optimizing power consumption is determining where power is consumed within a processor. While system-level code tracing and bit transition calculation are...
Green manures, soil solarization, and long rotations with crops not susceptible to Verticillium wilt are among the disease management tactics currently under investigation as alternatives to chemical fumigation of soil. The effect of a broccoli green manure on soil microsclerotial populations of three isolates of Verticillium dahliae and on Verticillium...
Learning easily understandable decision rules from examples is one of the classic problems in machine learning. Most learning algorithms for this problem employ some variation of a greedy separate-and-conquer algorithm. In this paper, we describe a system called LERILS that learns highly accurate and comprehensible rules from examples using a...
I radio-tagged 191 Hatch-Year (HY) and After-Hatch-Year (AHY) female northern pintails (Anas acuta) in the San Joaquin Valley (SJV), California and studied their movements, habitat use and survival during August March, 1991-94.
Overall, 94.3% wintered in central California; the highest percentage left during
the 1991 drought. Tulare Basin and Mendota...
PURPOSE: To determine physical, plankton and nutrient/chemical conditions over the continental
margin for climate change studies in NE Pacific. In particular, to make CTD and CTD/rosette and net
tow stations along one lines off Newport, OR, and to make continuous observations of currents using ADCP and of surface-layer temperature, salinity...
Two studies concerning low molecular weight organic acids in soils were conducted. In the first study, anion exclusion chromatography was used to separate and identify 12 common organic acids, and the accuracy, precision and detection limits of the method were determined. The method was found to be sensitive and accurate...
Digital systems, in particular microprocessor, have recently experienced phenomena growth in performance. Both technology advancement and clever design have sustained this performance growth. As clock frequency heads into the Ghz range, new circuit design, for both logic and storage, are needed. Such new circuit technology must provide needed performance with...
Ramaria is a genus of epigeous fungi common to the coniferous forests of the Pacific Northwest of North America. The extensively branched basidiocarps and the positive chemical reaction of the context in ferric sulfate are distinguishing characteristics of the genus. The genus is estimated to contain between 200-300 species and...
Use of sheep to control weeds in a ryegrass-white clover pasture in which Knob Cone-Monterrey hybrid pine trees had been planted was investigated in Corvallis, Oregon during 1997-1998. Treatments consisted of an ungrazed control (C) and grazing applications to achieve 25 (L), 50 (M) or 75 (H) percent utilization of...
The purpose of this study was to apply the Combined Index (Con, a hazard screening tool, developed by Dr. Debra Forman of EPA Region III Office of Air Radiation and Toxics Division, to the 1994 and 1995 Oregon Toxic Chemical Release Inventory (TRI) for pollution prevention and facility targeting analysis....
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...
In this study I explored the variety of educational opportunities
available in museums. Next, I examined the museum education programs
in the Portland, Oregon area and described what types of opportunities are
available to teachers. Finally, I made suggestions for teachers on how to
best access museum programs and for...
A common perspective promoted by health care professionals is that exercise may help reduce symptoms and improve activities of daily living among persons with multiple sclerosis (MS). Yet, the effects of resistance exercise on power, functional mobility, and fatigue are largely unknown. The purpose of this study was to examine...
Technology resource fees provide a possible source of funding for library technology. Integrating these student funds into libraries’ budgets requires strategic planning, good communication, and student involvement. Through a review of peer institutions and a broad student survey, this study explores how libraries may tap into these funds.
Local (Country) variations in key social and economic indicators are important in Oregon and Washington. Covered employment, wage and salary, unemployment, and population data for 1987 through 1997 showed regional trends in these indicators, which are compared with national trends. Future updates will be published in the 'Production, Prices, Employment,...
Examines the eating habits of cows, sheep, horses, and goats, and explores how forage selection, pugging, trampling, and fencing contribute to a pasture's health and sustainability.
A fast-response chromel–constantan thermocouple sensor was constructed for use on the microstructure profiler Chameleon and used for 60 ocean profiles off the coast of Oregon. The stability of the thermocouple was compared to that of an FP07 microbead thermistor, and its frequency response was compared to a high-resolution microconductivity probe....
Louisiana Army Ammunition Plant (LAAP), located near Shreveport, Louisiana, is a
government-owned contractor-operated plant. Its purpose is to manufacture, load and
assemble ammunition items. Area P has been used over the past 40 years to dump
explosive-laden wastewater into 16 unlined lagoons. In 1989 LAAP was placed on the
National...
Cockpit Task Management (CTM) is the initiation, monitoring, prioritization, execution, and termination of multiple, concurrent tasks by night crews. The primary research question posed in the current research is what factors affect task prioritization on the modern day, commercial flight deck. The conventional CTM literature was reviewed as an introduction...
Traditionally, M. chitwoodi is controlled with
chemical nematicides, many of which risk
suspension for use on potatoes due to health and
environmental concerns. It is essential to develop
and refine alternative strategies for controlling
Columbia root-knot nematode now, so that
productive and profitable potato acreage will not
be lost if...
The authors varied the number of red alder retained with 300 Douglas-fir per acre on a high-quality site in coastal Oregon. Alder densities of 0, 20, 40, and 80 per acre were tested. The authors' fifth treatment eliminated nitrogen-fixing alder, but substantial nitrogen fertilizer. Treatment 6 had neither thinning nor...
The Oregon Department of Forestry, in cooperation with the Oregon Department of Land Conservation and Development, offers this publication as a guide for cities and counties to use in the development of urban forest practice regulations.
Physiology and genetics of drought hardiness were investigated in two-year-old coastal Douglas-fir seedlings from 39 full-sib families obtained from coastal British Columbia and grown at Oregon State University, Corvallis, Oregon. The seedlings were subjected to three drought treatments (control, moderate, and severe drought) in their second growing season (June through...
Numerous properties of Yucca schidigera and Quillaja saponaria have been studied with respect to the saponins in the plant. These saponins are present in the extract as well and have been utilized commercially in the food and cosmetic industry for various products. Saponins have detergent-like properties in the presence of...
The Mt. Scott watershed in northern Clackamas County, Oregon is an urban watershed that lies inside the Portland metropolitan urban growth boundary. Urbanization of the watershed began in the early 1970s and has recently accelerated. A landscape level analysis of the urbanization process was combined with the results of a...
Recent declines in nesting success of some fish-eating seabirds in Alaska have been attributed to declines in availability of certain schooling forage fishes (e.g., capelin Mallotus villosus, Pacific sand lance Ammodytes hexapterus, and Pacific herring Clupea harengus pallasi). These fishes tend to have high lipid content compared with other species...
Much of the Columbia River Basin has been cultivated for agriculture, which has reduced and fragmented the native shrub-steppe habitats. As a result, the range of the Washington ground squirrel (Spermophilus washingtoni) has been significantly reduced, prompting the states of Washington and Oregon to review their status. Consequently, I investigated...
Marker information in the new oilseed crop, meadowfoam, is limited. Molecular markers to facilitate meadowfoam breeding and cultivar improvement are not available. The knowledge of genetic relationships among recent germplasm is not known. The objectives of this study were (i) to gain an understanding of genetic diversity and relationship patterns...
This dissertation approaches the problem of how to design process
measurements by identifying process attributes which are common to all product
development processes. By classifying the generic attributes of a product
development process and their relationships, a framework is established which
gives definition and context to individual measurements. At the...
The objective of this Biological Opinion (BO) is to determine whether the action to restore emergent vegetation to wetlands on Sauvie Island is likely to jeopardize the continued existence of Upper Willamette River chinook salmon and Lower Columbia river chinook salmon or destroy, or adversely modify proposed critical habitat.
In spite of their importance in many systems, liquid surfaces have been
explored at the microscopic level to a much lesser extent than solids. Most surface
analysis must take place in vacuum, a major drawback for liquids. The technique of
time-of-flight scattering and recoil spectrometry (TOF-SARS) has been applied 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...
We demonstrate color shifting from the yellow to the red in the electroluminescence from (ZnGa)S:Mn films. We observe threshold voltages down to about 35 V, extremely low for such devices. We discuss the materials characteristics of the phosphor films, and the potential for improvement of the luminous intensity of the...
Both consumer and descriptive analyses were used to study the shelf-life of packaged, roasted and ground coffee in order to evaluate the utility of using sensory data in a shelf life model, and to examine the ability of consumers to detect a difference between treated and control samples. Two types...
Cultural practices in snap bean production were evaluated at the Oregon State University Vegetable Research Farm Corvallis, Oregon. In addition, decision-making in snap bean production was assessed on five farms in the Coburg-Junction City-Harrisburg regions of the Willamette Valley, Oregon. A field experiment with cover crop and tillage techniques was...
