Decision support systems (DSS) have been used to a very limited extent in pond aquaculture. This study documents the development of a DSS (POND) which allows representation of an entire pond aquaculture facility, and provides analysis capabilities in the form of simulation models and an economics package. Simulation tools in...
The purpose of this research was to develop methods for using geographic information system (GIS) analysis and unsupervised classification of Global Vegetation Index (GVI) images to improve carbon budget estimates of the former Soviet Union (FSU). A GIS was used to locate the geographic distribution and estimate the area of...
Error-correcting output coding (ECOC) is a method for converting a k-classsupervised learning problem into a large number L of two-class supervised learningproblems and then combining the results of these L evaluations. Previous researchhas shown that ECOC can dramatically improve the classi cation accuracy of supervisedlearning algorithms that learn to classify...
Artificial Intelligence (AI) planning techniques have been central to automating a gamut of tasks from the mundane route planning and beer production to the ethereal image processing of space-ship images. Of all the planning techniques, hierarchical- decomposition planning has been the technique most employed in industrial-strength planners. Hierarchical-decomposition planning is...
The golf swing involves a complex sequence of body movements which adjust according to the demands of a given shot. The purpose of this study was to determine common characteristics and essential elements of the golf swing under various conditions. The swing patterns of thirteen elite professional golfers were analyzed...
The objective of this study is to assess the quantitative
genetic structure of fitness characters in Tribolium confusum
flour beetles. Estimates of genetic variation and covariation for a
series of fitness components (two measurements of survival,
larval weight, development time, fecundity, and female
productivity) were obtained from two populations of...
The interaction of skeletal muscle phosphofructokinase
with a variety of acidic proteins including calmodulin and
troponin C and with nucleic acids (RNA and DNA) is manifest
in a reversible, time-dependent loss of catalytic activity.
The inactivation is affected by a number of factors.
Substrates (fructose-6-phosphate and ATP), positive
effectors (fructose-2,6-bisphosphate,...
The National Agricultural Statistical Service (NASS) conducts quarterly surveys for estimation of some primary commodities produced on farms and ranches. The commodities often have highly skewed distributions with a few farms producing very large amounts. NASS uses dual sampling frames comprised of the list frame for efficient stratification and the...
The CARS apparatus at OSU was modified to permit studies in the 0-500 cm⁻¹ spectral region. The new low frequency capabilities were then used to study molecular clusters formed in free expansion jets of carbon dioxide. A strong cluster band was observed at 73 cm⁻¹, with a weaker shoulder at...
Winters in north-temperate climates impose high
thermogenic demands upon small birds which are met by
seasonal acclimatization. This thesis investigates the
extent and mechanisms of seasonal acclimatization in darkeyed
juncos (Junco hyemalis) inhabiting western Oregon.
Although insulation is significantly increased in
winter, acclimatization is primarily metabolic. Increased
metabolism is required...
This study had two purposes. The first purpose was to
determine whether certain aspects of the Japanese language
were reflected in examples of the Japanese cultural
construct of contemporary essays. The second purpose was
to show how these aspects of the Japanese language reflect
the intuitive, non-logical nature of Japanese...
The purpose of this study was to determine: 1) the ideal
vocational agriculture summer program activities as perceived by
teacher educators and state supervisors nationwide, and 2) if
there were differences in perceptions towards vocational
agriculture summer program activities among selected groups
impacting vocational agriculture programs in the state of...
Kanter (1977) conceptualized five dimensions of the
interdependence between work and family: occupational
subculture, job absorption, time and timing, rewards and
resources, and the emotional climate of work. Each of
these dimensions affects the functioning and satisfaction
of families and marriages. This research examined how
four of these dimensions (occupational...
The objective of this study was to develop a numerical model for the movement
and fate of chlorinated phenols in groundwater. In the first part, a numerical model for
several different equilibrium and nonequilibrium sorption processes under isothermal
conditions is developed for one-dimensional, steady-state water flow in soil columns.
The...
The effects of erect leaf canopies on enhancing grain yield in wheat is not
understood. The main objective of this study was to understand the effect of leaf
angle on grain yield by comparing randomly derived-lines from crosses of erect
and droopy leaf spring wheats. Nine traits associated with canopy...
The purpose of this study was to validate a field
test of cardiorespiratory fitness for men with mental
retardation. The subjects were 19 healthy men with
moderate mental retardation whose mean age was 26 years
with a mean IQ of 48. Each subject underwent a
maximal treadmill test utilizing a...
An important aspect in device technology is the
processing of GaAs to produce highly-resolved etch
patterns on the substrate. This is done typically on the
GaAs(100) surface. Recently, a number of methods, all
using chlorinated vapor reactants, have been applied to
fabrication of GaAs devices. In spite of these
technological...
Early studies on the biosynthesis of Sarubicin A, 1, had suggested the
intermediacy of the novel aromatic amino acid 6-hydroxyanthranilic acid,
17. To investigate the biosynthetic steps beyond 17, [¹³C-¹⁵N carboxamide]
6-hydroxyanthranilamide, 27a, was synthesized, and fed to fermentations
of Streptomyces helicus. Incorporation of 27a into 1 provided suggestive
evidence...
The root disease fungus Inonotus tomentosus, common in the old
growth boreal forests of British Columbia, poses a threat to the
health of second growth forests established on sites with a previous
history of root disease. Colonized stumps occur in groups of 1 to 6;
the groups are clumped within...
This dissertation describes the development of a mechanistic
overlay design procedure. The mechanistic analysis represents a new
trend in both new pavement and overlay design. The greatest advantage
of the mechanistic pavement analysis is that it considers the
fundamental characteristics of materials to be used, is capable of
considering changes...
Adsorptive bubble-separation processes are used to
remove adsorptive contaminants from wastewater. A
mathematical model was developed for the adsorptive bubble
separation processes in a countercurrent column. The model
included an assumption that linear adsorption of the solute
occurred on the gas bubbles. Predictions indicated that
aqueous column height has less...
Salmonberry (Rubus spectabilis) and thimbleberry
(Rubus parviflorus) are clonal shrub species common to
reforestation sites in the Oregon Coast Range. These
species have economic importance, because they reduce
conifer seedling growth and survival. A population modeling
approach was used to facilitate study of the biology of
these species and to...
A model has been developed to predict the long-term
oxidation rate of Zircaloy-4 for ex-reactor (autoclave) and
in-reactor (PWR) environments and operating conditions. A
computer program has been written to solve the oxygen
diffusion equation by employing a fully implicit finite
difference method for a one dimensional cylindrical
geometry. The...
Although the synthesis of DNA precursors is
closely coordinated with DNA replication, it is still
not clear whether deoxyribonucleoside triphosphates
(dNTPs) influence DNA replication independently of
their interactions with DNA polymerase catalytic sites.
In an effort to understand the extent to which rate and
fidelity of DNA replication are regulated...
This thesis presents a method for determining the
kinematic geometry of arthropod legs. A kinematic
description makes possible the analysis of arthropod leg
motion, as a prelude to investigating how various arthropod
species are able to negotiate diverse terrains. Such
knowledge will aid in design of legged vehicles.
The focus...
Electric fields due to adsorbates on a metal surface are studied experimentally with Rydberg atoms as probes. A beam of lithium Rydberg atoms, produced by an oven in a high-vacuum system, passes within 3μm of the surface of a metal mesh having 6μm square openings. Rydberg states with principal quantum...
In sonar or radar array processing, one of the most important objectives is to estimate the angles of incidence of distant source signals in a noisy environment. The standard eigenstructure-based method, which is known to yield high resolution spectral estimates for solving the direction finding problem, relies on the assumption...
Development of a novel, useful, orally administered dosage form
providing controlled, sustained release of an active ingredient was desired.
Film layers of Aquacoat and Eudragit L-30D (commercially available
coating materials) were applied to acetaminophen cores. Amount of coating
material, number of polymer layers, and order of application were varied.
In...
Alcohol use/abuse among college students is a serious concern for
higher education. Despite efforts to address this problem student
use/abuse of alcohol continues. The purpose of this study was to
determine which of three alcohol education instructional approaches
more significantly impacted students' attitudes regarding the acceptance
of alcohol use/abuse. Three...
The purpose of this study was to investigate changes in
contact, emotional closeness, and aid exchange in the mother-daughter,
relationship during daughter's first pregnancy. According to the
literature reviewed, women increase contact with and become
emotionally closer to their mothers with pregnancy. It appears that
pregnant women have increased feelings...
Computer decision aids can help integrate and apply diverse sources of information and expertise to problems of integrated pest management (IPM) in agriculture and forestry. AppleMgr combines a rule-based expert system with databases and spreadsheets in a prototype decision aid intended to be expanded and modified for use by extension...
The purpose of this research was to determine the extent to
which parents and professionals were in agreement prior to and
following intervention regarding their Judgement of the gross motor
abilities of the parents' preschool children.
Each child was tested by a professional on the Ulrich Test of
Gross Motor...
Martin Buber was an internationally known scholar,
teacher, and author whose works covered education, communication,
politics, theology, philosophy, counseling,
and related fields. The purpose of this study was to
discover the implications of Buber's philosophy of education
for the student services profession. Previous
attempts to relate Martin Buber's philosophy to...
The adenovirus replication origins reside in the inverted terminal
repetition (ITR) sequences. Replication proceeds unidirectionally by a
strand-displacement mechanism from either or both origins to produce
duplex daughter DNA plus a displaced parental strand. The displaced
strand can be duplicated by two different routes. The cis pathway involves
intramolecular hybridization...
This study involves the development of a biofilm
reactor that supports growth of a deep biofilm on a gas
permeable membrane. The reactor solution is not aerated,
and oxygen is supplied through the membrane. The reactor
is termed a substratum-aerated-biofilm reactor or SAB.
With adequate concentrations of electron-donors and
electron-acceptors,...
The peripheral-type benzodiazepine receptor (PTBR) of trout brain was
pharmacologically characterized and pyrethroid interaction with this site
investigated. High-affinity binding sites for [³H]PK 11195 were detected in brain
membranes of rainbow trout; these shared some of the characteristics of the
PTBR of rodent brain (i.e., high affinity for PK 11195...
The research involved development of two ecological
simulation models to explain the complex dimensionality of
chinook salmon (Oncorhynchus tshawytscha) life history
structure (represented by the age composition of the
spawning stock) and management difficulties entailed in the
complexity.
Since different sizes of chinook salmon are thought to
adapt differently to...
The effects of several hormones and inducers of intracellular
messengers on plasminogen activator (PA) production and changes in
embryonic size by cultured bovine embryos were evaluated. Day 8 embryos
were cultured in Ham's F-12 with 1.5 mg/ml bovine serum albumin (BSA)
containing different levels of progesterone (P), estradiol -17fl (E₂),...