Wildfire management networks allow for collaborative intervention in mitigating the ever-present risk of major wildfire events. This thesis consists of two manuscripts that explore the topology and characteristics of wildfire management networks and their ability to influence wildfire severity in social-ecological systems. The first manuscript focuses on the characteristics of...
The purpose of this study was to explore the housing expenditures
and factors in, housing selection and satisfaction of single
adults. The population tested was guests and members of two single
Catholic adult clubs in Portland, Oregon. Questionnaires designed
for collecting the data for the study were mailed to the...
The goal of these experiments was to ensile combinations of shrimp or crab waste
with perennial ryegrass straw and analyze it for silage quality and ruminal degradability.
The rapid deterioration of seafood wastes required initial preservation prior to ensiling
to minimize odor production and protein breakdown. Eight experiments were conducted...
This thesis analyzes two Victorian fairy tales that feature queer endings, or endings that offer alternatives to the heteronormative fairy-tale tradition that idealizes heterosexual marriage and the biological family. In both George MacDonald’s The Wise Woman (1875) and E. Nesbit’s “The Island of the Nine Whirlpools” (1901), I argue that...
Throughout the course of this thesis, I argue that the prose of David Foster Wallace, specifically his posthumously published novel The Pale King, inhabits a middle ground between universal sincerity and the particularized authenticity of postmodern irony. I examine Lionel Trilling's definitions of sincerity and authenticity before moving toward an...
Thirty-six female guinea pigs were placed on a scorbutogenic
diet for 14 days and then divided into groups of four. Three groups
received adrenocorticotropic hormone (ACTH) with each group given
10, 20, or 40 units. Three groups each received 50 mg of ascorbic
acid and three groups received 50 mg...
A high performance liquid chromatography (HPLC)
procedure using a LiChrosorb-NH₂ column and a eluant
buffer of 75:25 (v/v) of acetonitrile:0.05 M KH₂P0₄, pH
5.95, was developed for the successful separation and
determination of ascorbic and erythorbic acids in selected
food samples.
Application of the method, which is sensitive, rapid
and...
Ryegrass residue consists of three main C fractions: readily available soluble C, intermediately available cellulose and hemicellulose, and slowly available lignin. Changes in chemical composition during decomposition influence rate of degradation as well as composition of the microbial community involved. Use of ¹³C-labeled plant material coupled with analysis of phospholipid...
This thesis situates a discussion of Thoreau's later natural history essays in the context of the author's other writings. Beginning with an examination of the writings of Thoreau's friend and mentor Ralph Waldo Emerson, this paper examines Thoreau's relation to and departure from Emerson's understanding of time, place, and pattern...
The increasing knowledge of the significance of vitamin B₆ in
human metabolic processes has emphasized the importance of developing
reliable means of assessing nutritional status with respect to
this vitamin. One possible approach to this end is the measurement
of pyridoxal phosphate in blood or plasma, particularly since this
phosphorylated...
In the Coast Range of western Oregon, some natural resource managers are converting red alder-dominated riparian areas to conifers to increase the future source of in-stream large wood for salmonid habitat. However, studies in Alaska have shown red alder-dominated riparian areas support greater invertebrate biomass compared to conifer-dominated areas. In...
The research conducted here originated with the question of what caused the massive build-up of nuclear arsenals, which included ever larger and more powerful bombs and delivery systems from them, in the United States and the Soviet Union, even though the consensus beforehand was that nuclear energy should be prohibited...
During his lifetime C. S. Lewis chose to speak to Christians in plain and simple language that they could understand. Lewis taught and defended truths that he felt were discernible through reason. Morality, free will, and the divinity of Jesus Christ were fundamental to his core beliefs and teachings. His...
Recent conflicts in America concerning the environment (the harvesting of old growth timber in the Pacific Northwest, or the proposed opening of public lands in southern Utah to mining interests, for instance) have precipitated a personal examination of "historical others" (Jensen 64), individuals that possess very different sensibilities from a...
The thesis is a case study of two traditional family farms that were settled in
Oregon in 1850 and 1915. The study embraces the theory that material culture
reflects customs and values. The material culture indicators within the study are the
architectural structures of the Oregon farms. The study filters...
Electricity is a vital energy source for modern life, and is used in almost every aspect of daily life. United States electricity consumption totaled nearly 3,886,403 gigawatt hours in 2011. Residential electricity consumption accounts for 37 percent of total electricity consumption in the United States. Between 1990 and 2007, the...
A project is described wherein a source code browser was implemented based upon tasks performed by software engineers looking for source code modules with only UNIX utilities. These tasks were discovered by observing the actions of software engineers looking for code modules in a library, The success of the implementation...
The objectives of this study were: 1) to identify and map the
experimental area of Meadow Creek watershed by existing vegetation,
and 2) to identify and map the experimental area of Meadow Creek
watershed by habitat types. The classification system adopted for
this study was based on the habitat type...
I examined the abundance and habitat associations of terrestrial amphibian species and the species richness of terrestrial amphibian communities in riparian buffer strips, clearcuts, and unmanaged riparian forests. The study was conducted in the western hemlock (Tsuga heteropliylla) vegetation zone of the northern and central Oregon Coast Range. Data were...
Suicide is a leading cause of death amongst adolescents, and transgender and gender diverse youth are at especially high risk for suicidal ideation and attempt compared with cisgender peers. Using established ideation-to-action models of suicide and the Minority Stress Model, this project used the 2019 results of the Oregon Healthy...
Experimental streams constructed by the Weyerhaeuser Company,
Tacoma, Washington, at Kalama Springs, Washington, were used to observe
successional changes in the benthos. Community changes were observed
relative to experimental manipulations of light intensity and nitrate
concentration in two experiments. The development of benthic assemblages
was followed for 150 days after...
Whey protein isolate (WPI) and glycomacropeptide (GMP) have shown potential immunomodulatory properties. In this study, we investigated their effects on pro-inflammatory cytokine secretion using both in vitro and in vivo models. In LPS-stimulated THP-1-derived macrophages, digested WPI and GMP reduced cytokine expression, while whole GMP increased secretion. The in human...
Lodgepole pine (Pinus contorta) forests are widely distributed throughout western North America. However, the lodgepole pine forests of central Oregon are ecologically unique to the region, with a mixed severity fire regime, low cone serotiny, and their occasional presence as a climax species. Most of the research conducted regarding the...
This study aimed to explore the relatively undocumented experiences and perceptions of mattering and marginality among Middle Eastern students attending a large American university, it also sought to inform higher education administration about the unique characteristics of this rapidly noticeable student population and it attempted to narrow the knowledge gap...
As species of ash trees become increasingly threatened worldwide by exotic pests and pathogens, it is important to develop descriptions of their ecologies that help guide the conservation and restoration of forests in which they are a major component. Oregon ash (Fraxinus latifolia) is a dominant tree species in wetland...
This study investigated the relationship between airborne bacteria densities and varying ventilation rates in industrial office areas. The two objectives of this study were as follows:
to determine the correlation of bacteria density and ventilation rates in each sample area.
to measure the reported incidence of respiratory illness in each...
Hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) is an arboreal, hemiparasitic plant that principally parasitizes western hemlock (Tsuga heterophylla). Hemlock dwarf mistletoe exerts a profound influence on infected trees that can drastically change the structure of the tree crown due to reduced growth, top dieback, branch deformation and death, resulting...
Purebred Yorkshire gilts from a confinement managed herd were reared to test weights away from the sow and boar herd. Thirty-eight gilts weighing between 73 and 80 kilograms constituted group A gilts; 38 gilts weighing between 91 and 100 kilograms constituted group B gilts; and 47 gilts weighing 114 kilograms...
Successional patterns of attached estuarine diatoms were investigated
using laboratory model ecosystems. Artificial substrates
of acrylic plastic were exposed to 0, 4, and 10 hours of desiccation
per day. Diatom assemblages that developed under temperatures
normal for Yaquina Bay, Oregon (control ecosystem) were compared
to assemblages that developed at temperatures...
The pine butterfly (Neophasia menapia C. Felder & R. Felder) (Lepidoptera: Pieridae) is a relatively host-specific defoliator of ponderosa pine (Pinus ponderosa Dougl. ex Laws). From 2008 to 2012, the Malheur National Forest was subject to an outbreak of pine butterfly in ponderosa pine, peaking at ~100,000 ha of forest...
The purpose of this study was to assess the congruence of perceptions of academic advising between students and advisers. Seventeen tasks involved in developmental academic advising were identified from a review of current academic advising literature. These criteria became the basis of a questionnaire that asked students whether their adviser...
An experiment was conducted with 51 control and 51 experimental confinement-
managed purebred Yorkshire sows of various parities to (1) determine
whether confinement-managed sows during lactation would exhibit estrus,
mate, and conceive as a consequence of a daily regimen of a short period of
separation from their litters, mixing sows...
Thirty-six gilts were used in an experiment of 2³ factorial
design. The experiment consisted of two breeds (Yorkshire-
Berkshire and Yorkshire), two feeding regimens (pre-breeding and
post-breeding) and two levels of dichlorvos (2, 2-dichlorovinyl
dimethyl phosphate, 0 and 800 mg. per gilt per day). Pre-breeding
treatment consisted of feeding dichlorvos...
A synthesis of over 2000 paleoclimate proxy records is performed via a data assimilation framework that expands upon previous efforts by implementing a suite of physically-based proxy system models, and which provides the first example of an observationally independent, multi-seasonal (DJFM, JJAS) paleoclimate reanalysis. This methodology is contrasted against previous...
Thirty-seven Yorkshire sows were bred to one of six boars; 34 of the sows were verified pregnant at 42 d of gestation. These sows were innoculated with ovine serum albumin (OSA) in Freunds' complete adjuvant at 65 d and later given a second injection in Freunds.' incomplete adjuvant 93 d....
Two digestibility trials using sheep were conducted to determine
the digestibility coefficients of a commercially processed NaOH treated
annual ryegrass straw cube. Comparisons were made with loose, chopped
ryegrass straw and a ryegrass straw cube processed with molasses as a
binder.
The NaOH cubed straw was produced by spraying a...
Purebred Yorkshire gilts with weights ranging from 70 to 105
kilograms were moved from a total-confinement rearing unit to a
total-confinement brood stock unit where approximately ten gilts
per pen were mixed to provide new penmates. Each gilt was thus
exposed to an unfamiliar environment and to foreign penmates along...
Increased energy costs have prompted the rural village of Galena, Alaska to explore viable alternatives for heat and power generation. Continued dependency on petroleum products will cause the community’s economic driving force, the Galena Interior Learning Academy (GILA), to face uncertain operability. A wood-fired boiler is scheduled to be installed,...
Progeny from three sires of differing genetic background were
divided within litters by sex and placed on either a 15 or 19% protein
ration. The test period began when the experimental animals weighed
60 pounds and continued until they were slaughtered at 225 pounds.
This test period was divided into...
During the 2006/07 academic year, 582,984 international students studied in the United States (Open Doors Study, 2007). Roughly 430,000 of these international students were pursuing Bachelors or Graduate level degrees. Of the international students that complete degrees, most will return to their home country and will be unable to attend...
Douglas-fir (Pseudotsuga menziesii) is a commercially and ecologically important tree species native to western North America. The foliar pathogens Phaeocryptopus gaeumannii, the causal agent of Swiss Needle Cast, and Rhabdocline species, the causal agents of Rhabdocline needle cast, are two important pathogens specific to Douglas-fir. These pathogens are highly influenced...
A study was made of blood glucose levels and their relationship
to reproduction in gilts.
Twelve blood samples, two in each of three successive weeks,
before and after breeding were taken. Half of the samples were
obtained from gilts in a fasting state and half after feeding. All
samples were...
The theory of Biorhythms is an up and coming topic.
Its founding fathers: Dr, Fliess, Dr. Swoboda, and
Dr. Teltsher discovered the 23 day physical 28 day sensitivity,
and 33 day Intellectual cycles around the turn of the century.
Today, biorhythms are being looked at and studied
from many different...
Oregon State University swine herd records of four genetic
groups were analyzed to determine: (1) the association of occurrence
of a small litter (≤ 7) at birth with size of subsequent litters
for gilts and sows, separately; (2) the effect of parity, genetic background
and litter size on mean birth...
An experiment was conducted during the period November 1967
to November 1968 at Oregon State University (OSU) and the Umatilla
Branch Experiment Station (BES) at Hermiston, two trials at each
location, to answer several questions: (1) could comparable rations
for swine be formulated by a computer on a least-cost basis;...
Douglas-fir needle midge (Contarinia pseudotsugae, Diptera: Cecidomyiidae) is a native invasive species in Pacific Northwest Christmas tree farms, seed orchards, and nurseries where Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) is present. Douglas-fir needle midge (DFNM) causes discoloration and galls on the needles, thereby it affects the market value of the Christmas...
Introduction: Potential public health impacts of recreational cannabis legalization (RCL) are a growing concern, particularly for young adults. Some evidence suggests that following RCL, cannabis use increased, whereas alcohol use decreased among young adults. Co-use patterns have not been found to change following RCL in this age group. However, RCLs...
This study explores the lived experiences of first-year, rural, Oregon students in their initial entry to college. Through qualitative research involving one-on-one interviews with 10 participants, the author examines the transition of rural students into higher education, common experiences of rural students in their first term of college, and perceived...
:
_____________________________________________________________________________
DavidC. Kovac
This study explores the lived experiences of first-year, rural, Oregon
This paper examines the invasion of exotic wilding conifers on the native tussock grasslands of Aotearoa New Zealand. The investigation includes two studies and aims to better understand the structure of Pinus contorta seeds across tree crown positions and the viability rates of P. contorta seeds produced during a trees...
Growth data compiled in this study were collected by using
pigs farrowed during the fall, 1963 and spring, 1964 farrowing seasons
of the Oregon State University swine herd. Thirty-seven trios
of light-, medium- and heavy-birth-weight suckling pigs were used to
determine the effect of birth weight on subsequent rate of...
The primary purpose of this study was for three select
groups to critically appraise the Personal Hygiene for
Foodservice Workers sound/slide system. These three groups
(Media Specialists, Content Experts and the Learners) were
identified in a literature search as being those individuals
most directly responsible for evaluating the worth of...
Tests using paired pens of barrows were conducted during a 13 month
period to determine the influence of protein level of the ration on
production traits of market barrows. One member of each pair of six to
ten full- and half-sib pairs was randomly allotted to each pen group;
thus,...
Ponderosa pine is an important species both commercially and ecologically in western North America. This study considers the incidence of insect and disease pests on a series of replicated ponderosa pine research plantations in northern California. The studies, on an environmental gradient, contain a series of silvicultural treatments including vegetation...
Black stain root disease (BSRD) is a vascular wilt disease of conifers caused by three varieties of the native, insect-vectored fungal pathogen, Leptographium wageneri (L. wageneri var. wageneri, L. wageneri var. ponderosum, and L. wageneri var. pseudotsugae). Although morphological, physiological, and ecological characteristics differ among the three varieties of L....
At weights of 81.5-90.5 kg, 187 prepuberal crossbred gilts were
subjected to specific environmental stimuli, for up to 17 days, to
determine which stimuli or combinations of various ones would initiate
onset of estrus in prepuberal gilts. The stimuli used were:
movement to new building, mixing or non-mixing of gilts,...
The feasibility of fluidized bed combustion of coal for commercial
and industrial steam power generation has been established
and reported in the literature. Satisfactory removal of sulfur
oxides from the combustion product gases has also been reported.
In this experiment various heat exchanger tube patterns,
of commercial size tubes, were...
Litter site and birth weight data compiled from the
farrowing records of 275 litters out of 109 purebred
Berkshire sows of the Oregon State University swine herd
during the years 1953 to 1960 inclusive were used in this
study. Genetic and environmental factors influencing
four components of reproductive performance, namely,...
This study investigated the opinions of bicyclists/pedestrians
regarding how safe from a bicycle traffic injury they felt while on
campus. Most earlier studies had been concerned with the taxonomy
of bicycle/pedestrian accidents. Because of the paucity of
research on attitudes of bicyclists and pedestrians, this research
was undertaken.
The survey...
Red fir (Abies magnifica) is a high elevation conifer generally growing between an altitude of 1,400 and 2,700 meters. In California, red fir grows in the Sierra Nevada, the Klamath Mountains, the eastern edges of the northern Californian Coast Ranges, and in the southern Cascades. Red fir commonly grows in...
Land management agencies are faced with decreasing budgets and staff, even as acres in need of restoration treatment are increasing. Rural communities in the West are still suffering from sharp declines in timber harvests since the 1990s and are now contending with wildfires that are increasing in size and severity....
The major objectives of this study were to ascertain if certain ethnic and racial groups of first-year Oregon State University students are without access to online admission materials, and to determine what students' point of view are about computer access or applying to Oregon State University online. In addition, the...
This study examined the relationship between self-esteem and student involvement among American college sophomore women. Self-esteem is defined as "a positive or negative attitude toward the self" (Rosenberg, 1989, xxviii). Student involvement is defined as the amount of time a student spends actively involved in various activities in college (Astin,...
Advancements in the sophistication and complexity of modern electronic systems are creating a need for highly integrated systems with ever higher operational frequencies. The economical demands of these systems dictate that they be implemented using low cost fabrication technologies, such as digital CMOS. One of the major challenges facing circuit...
Rat liver microsomes are shown to contain an enzyme system
which converts the cyclodiene insecticides, aldrin, heptachlor and
isodrin to their corresponding epoxides, dieldrin, heptachlor epoxide,
and endrin. The microsomal fraction of 450 milligrams of liver from
male rats epoxidates 80 percent of a 20 to 50 microgram aldrin substrate...
Oils, greases, and grit which collect on an aircraft during
flight are removed on the U. S. Air Force washracks using an
alkaline, water-base cleaner. Waste-flows from these washracks
may include in addition to free oils, emulsified oils, and alkaline,
water-base cleaners several other constituents such as acid skin
brightners,...
This paper is concerned with the design of a 21-bit
metal-oxide-semiconductor field-effect transistor (MOSFET)
integrated circuit static shift register.
This circuit consists of three separate 1, 4, and
16-bit static shift registers constructed on a single
monolithic chip, each with independent input and output
terminals.
Type D flip-flops are used...
The purpose of this study was to determine the effects of
tritiated seawater (HTO) on selected developmental stages of the
goose barnacle, Pollicipes polymerus. Barnacle embryos were
cultured in Millipore cytology monitors with HTO concentrations of
0, 10⁻⁵, 10⁻³, 10⁻¹, and 10¹ μCi/ml. After 22 days, hatching was
complete and...
The concentrations of calcite, opal and quartz have been measured in 113 South Atlantic core tops. The remainder of the total sample has been calculated as clay. A method for the quantitative determination of opal has been developed.
Calcite is the dominant factor in South Atlantic sediments; its pattern can...
Protected natural areas are important reserves for biodiversity, and in the tropics, often play a role in deterring deforestation. This paper evaluates the effectiveness of a protected-area with a
two-tiered management regime in Bolivia, Amboró National Park and Integrated Management Natural Area (IMNA), in deterring clearance of forest. Four satellite...
The exponentially tapered, nonuniform transmission'
line, applied as an impedance transformer, is analyzed and
modified. The analysis develops an expression for the input
reflection coefficient that has the magnitude and phase
as distinct functions. This allows ease in comparing the
approximate and exact solutions and in developing the S-parameters for...
The known biology of Bareogonalos canadensis
(Harrington) is based on literature records of six
collections from three areas in the Pacific Northwest.
The objective of this study was to obtain fundamental
knowledge on the biology of B. canadensis, especially
its distribution, abundance, and host species, as well
as its potential...
Steep bathymetric anomalies in the beach profile, such as offshore borrow pits, submerged breakwaters, and nearshore canyons can significantly transform the wave climate through the effects of refraction, diffraction, and reflection. When located in the nearshore region the modified wave climate can also substantially change the location of breaking and...
Corrosion of reinforcement is recognized as the predominant factor that limits the service life of reinforced concrete (RC) structures exposed to aggressive environments. This corrosion deterioration can lead to damage resulting in capacity loss or even failure. For structures exposed to coastal marine environments or deicing or anti-icing applications, this...
The analysis of prehistoric stone features has suffered for two separate but related reasons. The first is the lack of stringency in defining the terms attributed to these structures and, second, the perception of a lack of formal attributes exhibited by them. These two factors have made it impossible to...
This paper discusses the theoretical design parameters of
photographic data recording systems associated with atmospheric
research radar. Practical considerations modify these theoretical
results. The design of a recording system employed on the Range
Height Indicator (RHI) scope of the weather Radar Set AN/CPS-9
atop McCulloch Peak, Oregon, illustrates the optimization...
In situ light and dark planktonic and benthal respirometers were
used to measure the oxygen requirements of Yaquina estuary water
and benthal deposits. Respirometer devices were constructed so that
actual conditions of mixing could be simulated and benthal deposit
disturbance would be minimized.
A mathematical model of a benthal respirometer...
The CMOS two-stage Operational Transconductance Amplifier (OTA) has been a key enabler for mixed-signal IC design for nearly four decades . This research focuses on a modified two-stage CMOS OTA that features load-pole cancellation (LPC); i.e., the resulting architecture is essentially a two-stage CMOS OTA with no load capacitance. The...
Organizations are constantly looking for innovative strategies to face more stringent competitive environments and the ever increasing market globalization. An alternative these organizations can pursue to respond to these challenges is to optimize their supply chain network (SCN). Important considerations when optimizing a SCN involve determining locations for plants and...
Digital Instrumentation and Detection is becoming the future of radiation detection and measurement. Computers are able to perform digitally what before would have taken an extensive array of analog equipment. The art of teaching radiation detection and measurement is following this same pattern of a shift from purely analog to...
The state of Oregon has two distinct climate types bisected by the crest of the Cascade Mountain range. The western side of the Cascades experiences high levels of precipitation and mild temperatures due to the maritime influence of the Pacific Ocean, while the eastern side lies in the rain shadow...
The two largest earthquakes ever recorded, the 1964 M[subscript w] 9.2 Alaskan and 1960 M[subscript w] 9.5 Chilean, occurred on seismogenic plate interfaces at subduction zones. It has been theorized that the catastrophic failure of a locked zone along the contact between the downgoing slab and the upper plate causes...
Vegetatively propagated peppermint (Mentha piperita L., cv. Black Mitcham) was used to determine the effects of night temperatures (8°C vs 25°C) on the plant growth in terms of fresh weight and leaf area, and on metabolite contents. The plants were sampled after 14 days, 21 days and 28 days in...
A project funded by the Southern California Edison (SCE) Company, Research
Center of Irwindale, California, has supported the development of a performance and
parameter prediction software program for use during the refurbishment of large
synchronous machines, turbine generators, and synchronous condensers. The computer
program was developed for SCE to allow...
A critical balance of hormones is necessary for normal plant
development. Therefore, precise mechanisms must exist to maintain
proper levels of cytokinins, a group of hormones regulating cell
division and differentiation. Structural modifications of the naturally
occurring cytokinin, zeatin; including the oxidation, O-glycosylation
and reduction of the N⁶-side chain; may...
The implementation of concurrent engineering into many large
companies has greatly improved their product development processes.
These companies have seen significant gains in quality and customer
satisfaction with reduced product costs, defects, and time-to-market
(Lake, 1992). Many large companies have successfully employed this
relatively new product development philosophy. However, smaller...