Six headwalls in the central Oregon coast range were selected for study of soil engineering properties and vegetativecharacteristics important for analysis of slope stability. The headwalls were considered representative of those which would be candidates for timber leave areas due to geomorphic and topographic features, including steepness of slope and...
The purpose of the study was to assess county extension agents'
knowledge of geotextiles; to determine their current level of
information and their location on an adoption-diffusion curve; and to
determine the agents' attitudes toward the potential use of
geotextiles in agriculture, specifically in soil erosion control.
A questionnaire was...
The middle to upper Eocene Tillamook Volcanics form the basement in the Rock Creek - Rocky Point area. These tholeiitic to alkalic basalts, basaltic andesites, and andesites were erupted as shield volcanoes seaward of the strandline ontop of an older deep-marine mudstone unit (Yamhill Formation) and an accreted portion of...
Tolerance analysis and synthesis plays a vital role in the success of a product design because it directly affects product quality and manufacturing cost. It also affects manufacturing process selection and planning. This research provides a review of several commonly used assembly tolerance analysis models and evaluation of their limitations....
The settlement history of a remote area in the Coast Range of Oregon, from the 1870s to the 1930s, is examined through factors that may have influenced the success or failure, and length of residence of the homesteaders and later residents. Despite the rugged and isolated location, a small community...
The northern Los Angeles basin is influenced by two structural styles: the west-trending compressional Transverse Ranges to the north, and the strike-slip Peninsular Ranges to the south. The interaction of these two structural styles has resulted in a complex fold fault belt at the northern margin of the Los Angeles...
The major portion of Pacific whiting (PW) is commercialized in the form of frozen surimi. Alternative products for PW were investigated focusing on fresh surimi and texturized meat from PW mince. Fresh surimi is made without additives and kept refrigerated instead of frozen. Texturized meat is a meat-like product made...
The purposes of this study were:1) to review the land use history of Oak Creek watershed since European settlement. And 2) to consider the human-caused impacts and their effects associated with different land uses. The study area was classified into three land use patterns: residential,agricultural, and forested areas.Since the European...
A characterization of the antigenic determinants (epitopes) of the glycoprotein (G) of infectious hematopoietic necrosis virus (IHNV) was made with different regions of the G gene expressed in Escherichia coli. A cDNA copy of the G gene was divided into four fragments after Taq I digestion and these fragments were...
Nutrition and diet are significantly interrelated with oral health and disease.
The control of diet and nutrient intake and good oral hygiene are important elements
in the prevention and treatment of dental caries and periodontal disease.
Prevention of dental disease is the major focus of dentistry today, and dietary counseling...
The Sulaiman foldbelt is an active and conspicuous tectonic
feature on the northwestern margin of the Indo-Pakistani plate.
Seismic reflection data have been combined with surface geological
mapping and drillhole data to interpret the structural style and
tectonic shortening of the eastern Sulaiman foldbelt and its adjacent
foredeep. The data...
The environment has been exposed to a number of hazardous chlorinated
organic compounds. These compounds may be anaerobically biotransformed by
sequential reductive dechlorination reactions in which the chlorine atoms are
replaced with hydrogen atoms. Because reductive dechlorination processes may
occur very slowly in the environment and chlorine position affects the...
This thesis describes the design of a Reduced Instruction Set Computer. Its instruction memory utilizes a unique cache architecture and a two-stage memory pipelining technique. Because of the bandwidth of the 64-bit instruction bus, instruction prefetching is possible and is implemented. The data memory is bridged by a four-way set-associative...
Increasing automation and highly flexible manufacturing processes cause increasing complexity for manufacturing system. FMS (Flexible Manufacturing System) is an approach to solve this problem. Since the elements of the FMS and manufacturing process performance are closely interrelated, the application of simple modeling and emulation techniques in the planning stages for...
Previous research suggests that fabric store customers
are not satisfied with the service provided in fabric
stores. According to the EBM consumer behavior model
(Engle, Blackwell, Miniard, 1986) and Oliver's consumer
satisfaction/dissatisfaction model (1981), fabric store
customers' dissatisfaction may be a result of their
unfulfilled service expectations. The purpose of...
The new CMOS folded source-coupled logic (FSCL)
technique intended for mixed-mode integrated circuits has
been designed. It has advantages over conventional CMOS
circuit in terms of reduced current spike, circuit delay,
logic flexibility, and layout density. A simple CPU
implemented in 2 μm CMOS technology with a 5.0 volt supply...
The photosynthetic activities, the pigmentation and the chloroplast
membrane polypeptides of several mutants of the green alga, Scenedesmus
obliquus, with complete or limited deficiencies in the light-harvesting
complex of photosystem II are characterized and compared to those of the
normal phenotype.. The principal phenotype examined in this study, K0 -9,...
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...
In 1982 a protohistoric archaeological site along the Applegate River in southwest Oregon was excavated by Oregon State University Department of Anthropology. Three housepits and a possible menstrual but were uncovered with lithic, faunal, and archaeobotanical elements recovered from house floors and hearths. Seven botanical taxa were represented by carbonized...
The purpose of this study was to examine the effects of a deep
breathing and stretching exercise on communication Apprehension,
Cohesiveness and Attentiveness. An empirical method was used in
this study. All of the subjects involved in the study were students
in beginning public speaking courses, Speech 112, at Oregon...
Obesity affects one out of every four Americans and represents a
serious health hazard in the United States. Serious chronic diseases
associated with obesity include heart disease, cancer, and adult-onset
diabetes mellitus. There has been a rapid expansion in the number of
weight control centers since the 1970s, yet there...
Perturbed angular correlation (PAC) spectra of fully yttria-stabilized (cubic) zirconia with Y₂0₃ contents of 35.4 wt. %, 27.8 wt. %, and 16.9 wt. %, respectively, were measured using the isotope ¹⁸¹Ta as probe nucleus. PAC spectra in cubic zirconia are characterized by a wide frequency distribution due to contributions of...
An aspect of the genetic structure of coastal Oregon steelhead was
explored and found to gradually change in a north to south pattern for the
allelic frequencies of several enzymes. Isocitrate dehydrogenase and
superoxide dehydrogenase were the clearest examples of this pattern of
variation. This pattern was most evident in...
GaAs MESFETs are widely used in high speed integrated circuits (ICs) and
microwave circuits. Due to the materials and processing methods used in GaAs
MESFET fabrication, deep level traps in the substrate materials have a strong influence
on device performance.
In this work we used the drain current transient characterization...
Digitally-programmable filters have been an ongoing research topic for a number of years. The first such filters were FIR transversal filters using Charge-Coupled Devices (CCD's) and IIR recursive filters using switched-capacitor (SC) techniques. Although both techniques achieve excellent results, they require non-standard and/or additional IC fabrication steps. Low substrate doping...
The objective of this thesis is to present the architecture and
design of a neural network-based pattern classifier. The classifier
detects textual characters which have been translated, rotated, and
corrupted by noise. This form of pattern classifier differs
significantly from traditional pattern classifiers. The neural network
architecture used in implementing...
Advances in VLSI array processing have led to many new
parallel structures for real-time Digital Signal Processing (DSP)
applications. Among all the architectures, systolic arrays have played
an important role because systolic arrays have regular, local
interconnections with modular structure. In ordinary systolic arrays,
however, all processing operations and data...
A numerical technique to compute the time domain response of multiconductor lossy
uniform and nonuniform lines terminated in general nonlinear elements is presented. The
technique is based on the generalized method of characteristics. The method transforms the
original system of transmission line equations into a system of ordinary differential
equations....
A recorded image is a degraded version of an original image.
The process of removing the degradations is called restoration. Two
types of degradations are considered in this thesis: namely, linear
motion and defocused lens blurrings. Using the direct deconvolution
technique to restore blurred images is impossible if the blurring...
A simple heat exchanger network has been studied as
an example of a dynamically interactive process. The
process is relatively simple, requiring only temperature
measurements and flow rate manipulations. Equations are
presented for the design of a physical process having a
specified steady-state Relative Gain Array and specified
dynamic characteristics....
The purpose of this investigation was to examine the
literature in education and library science to determine
why standards for education libraries have not been
realized, in the light of the specific criteria for other
areas of teacher education accreditation. Educators and
librarians in favor of strict standards for education...
The purpose of the present study was to test the selfconcept
and store image congruency theory with an elderly
population. The self-concept and store image congruency
theory predicts that individuals patronize stores that they
perceive as having an image similar to their own self-concept
(Martineau, 1958). The present study specifically...
Stress is an important concern among family caregivers in the United
States. Many caregivers face the demands of caring for an ill family member
for as many as eleven to twenty-four hours on a daily basis. Coping with
stress is an important topic for support groups and educational programs.
Evaluation...
This study was to determine if an increase of PaC0₂, after breath-holding prior to full inspiration, could enable a person to reach the same FVC measured on land while submerged. Another purpose of this study was to explore the difference in Db and %BF between HW at RV, TLC and...
This investigation deals with the chaotic rocking response and overturning
stability of offshore equipment subjected to base excitations due to wave-induced
motions of the supporting compliant offshore structural system. The equipment
compliant structural system is modelled as a free-standing rigid object subjected
to horizontal and vertical base accelerations. Three of...
Liquid cooled, laminar microchannel heat sinks were
earlier proposed by Tuckerman for cooling high heat
generating integrated circuits and high power microwave
generation systems using photoconductive switches. A
method of computationally analyzing the heat sinks is
presented which produces the desired temperature and
velocity distributions within the heat sinks. The...
Daily evaporative flux and meteorological data from three sites were
collected and analyzed. Analysis included evaluation of several
reference evapotranspiration estimating methods which were theoretically
based on distinct physical laws. The estimating methods included pan
evaporation, energy-based Priestly-Taylor, and combination methods with
and without biological adjustments. The data set represented...
Chlorinated low molecular weight solvents have been discovered in a number of the nation's groundwater supplies. Remediation of these aquifers will require some form of treatment. Presently, the dominant treatment method is air stripping which results in transfer of the solvent from the aqueous phase into the atmosphere. Biodegradation is...
The utilization of ⁷⁷ [superscript m] Se, half life 17.5 s, and ⁷⁵ Se, half life 119.8 d, for quantification of trace amounts of Se in well water and biological materials by means of instrumental neutron activation analysis (INAA) is described. A Se detection limit of 0.03 ppm was achieved...
Many educators are currently revising their curricula
to include critical thinking. However, there are factors
which apparently allow some students to become better
critical thinkers than others. Such factors are the concern
of two mentors of this researcher: Ron Manuto and Lloyd
Crisp. Both the Manuto and Crisp (1987) and...
The type of plasminogen activator (PA) secreted by bovine embryos was identified. Day 12 to 14 blastocysts were collected at slaughter from estrous-synchronized, superovulated and naturally mated crossbred beef cows. Embryos were either left as intact embryos (E) or microdissected into component embryonic discs (ED) and trophoblastic vesicles (TV). Intact...
Knowledge of a compound's degradation pathway is crucial to the assessment of risk at contaminated sites. Pentachlorophenol and its metabolic products can serve as model compounds to study the fate and transport of halogenated aromatic compounds in the environment. Acclimation of anaerobic sewage sludge to pentachlorophenol produced a microbial consortium...
I used program CAPTURE to analyze 1,535 data sets for 33 North American species of small mammals for sources of variation in capture probabilities and to characterize species-specific responses to markrecapture trapping. CAPTURE incorporates seven models to account for all possible combinations of heterogeneity (h), behavioral response (b), and time...
The objective of this study was to examine optimum conditions for primary
culture of porcine preadipocytes. Dorsal subcutaneous adipose tissue was obtained
from biopsies of 40-50 kg pigs and digested with collagenase in Krebs Ringer
Bicarbonate buffer. Isolated stromal vascular cells were cultured in different test media.
Stromal vascular cells...
The Upper Devonian Fenstermaker Limestone is a thickening-upward sequence
of interbedded sandy intrapelsparite and subordinate calcareous siltstone and mudstone
which averages 190 ft (58 m) thick in the northern Antelope Range. The Fenstermaker
Limestone is revised and restricted herein to include only those rocks above a basinal
shale sequence of...
Elliptical borehole enlargements or "breakouts" caused by systematic spalling of a
borehole wall due to regional maximum horizontal stresses were identified in 18 wells
drilled in the Coast Range and Willamette Valley of western Oregon. The breakouts
generally indicate a NNW to NNE orientation of maximum horizontal compression
(oH[subscript max])...
Twenty Russet Burbank seed lots were collected from
four states and one Canadian Province in 1988 and planted in
replicated trails at Powell Butte and Hermiston, Oregon as
part of a two year study to quantify clonal differences in
the cultivar. Samples of each seed lot were concurrently
increased and...
1-Phenyl-3-(2-Thiazoly1)-2-Thiourea (PTTU), has been reported to
inhibit dopamine-fi-hydroxylase (a copper-containing enzyme involved in
the pathway of biosynthesis of adrenaline in animal systems). In the
present study, PTTU has been shown to have cytokinin activity in the
tobacco bioassay. The cytokinin activity of PTTU suggested that
cytokinin-active N⁶-substituted adenine derivatives might...