Improving the understanding the relations of sustainability behaviors in manufacturing systems and actively engaging with manufacturers (especially SMEs) in sustainability efforts is key to the long-term success of U.S. industry and the natural environment. This study addresses this urgent need by establishing a systemic approach for the design of costing...
The "Framework for Determining the Suitability of Undeveloped
Land for Use as Cropland" is a decision-making format to assist private
and governmental agency decision makers in categorizing undeveloped
lands, which have been identified as having potential for conversion
to cropland, as to their suitability for use as cropland. The
Framework...
Most accidents and malfunctions in complex engineered systems are attributed to human error. However, a closer inspection would reveal that such mishaps often emerge as a result of poor design and human- and component-related vulnerabilities acting together. To fully understand and mitigate potential risks, the effects of such interactions between...
An open area of research in complex systems is to move reliability and failure assessments earlier in the engineering design process. When compared to later design, early decisions are cost effective and have a large impact on the system. Standard methods are limited by the availability of data and often...
We discuss a mathematical model arising from the following
physical situation. We consider a gas-filled cylinder with a piston
at one end whose motion is determined by the pressure of the gas
within the cylinder and by external forces. Zero mass flux is
assumed at the piston while the mass...
Our purpose is twofold, to derive a 2-dimensional model of streambed erosion and to develop a solution procedure to solve the equations of our model. The flow domain, which varies in time, is bounded above by a free surface and is bounded below by an erodable streambed. An initial flow...
This thesis proposes a novel fully digital technique for the estimation and correction of the DAC error in multi-bit delta sigma ADCs. The structure of the DAC error is indicated through a simple model for unit-element based DACs. The impact of the DAC error on the performance of ADC is...
Managers of forest and plantation ecosystems are encountering growing problems involving plant pathogens and the expanding geographic ranges of these pathogens. Historically unexposed stands are exceptionally vulnerable when a non-native pathogen is introduced because these pathogens can cause devastating disease in a host population that lacks co-evolved resistance mechanisms. One...
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...
We present a novel multi-objective optimization methodology built upon a multi-agent blackboard framework. This multi-agent blackboard system (MABS) synthesizes blackboard architectures, multi-agent environments, and optimization theory. The blackboard architecture creates the framework for initializing, storing, and solving a multi-objective optimization problem. Multiple agents allow for an optimization problem to be...
The flooding phenomenon can be defined as the maximum attainable flow
condition beyond which the well defined countercurrent flow pattern can no longer
exist. Thus the countercurrent flow limit (CCFL) or the flooding limit may be thought
of as the flow condition at which the strong interaction between the two...
The electrical grid is a key component of the Nation's critical infrastructure. Its continuous and reliable operation is of vital importance; any system-wide disruption would have a debilitating impact on crucial services, public health and safety, the economy, and the national security of the United States.
High-impact low-frequency events pose...
A group of trout that reside in streams of the desiccating lake
basins of southeastern Oregon differ markedly from other known
Salmo. Known commonly as the red-band trout, this fish was subjected
to chromosome analysis for comparison with other species of
western North American Salmo. The karyotype of the red-banded...
New approaches are needed to quantify and understand spatial patterns of stream fishes and their environment. Concepts in riverine ecology emphasize the importance of thermal zones and gradual longitudinal changes in physical habitat and biota, but little is known about spatial variability within the river continuum. I present a conceptual...
The crawfish enterprise of South Louisiana is shown to haveexpanded as much as 18-fold since the 1950's. It is estimated(1973) that there are about 44,000 acres of managed crawfish ponds.Of the 334 ponds identified and mapped in the thesis, 231 are classedas open ponds, 45 as rice field ponds, and...
Estimating the hydraulic conductivity of earth materials is important for many water resource modeling efforts, including predicting the transport of pollutants in ground water, computing surface runoff for flood control, and computing water budgets. This research implicitly used topography, soil, and climate data to estimate plausible continuous hydraulic conductivity values...
Clinocardium nuttallii from Yaquina Bay, Oregon, were found to
harbor an algal symbiont in the siphon, mantle and occasionally
the foot tissues. Approximately 35 percent of the population in the
study area was infected to some degree with the alga; however, no
cockles under two years of age were infected....
Counselor educators have a responsibility to serve as effective gatekeepers to the counseling profession by graduating only those counselors professionally prepared to serve the public in a myriad of counseling roles. However, despite its importance and the extant literature, gatekeeping still seems poorly understood and inconsistently applied. Although the literature...
Purpose of the Study:
The purpose of this research was to study the school districts
in Umatilla County as they existed in 1962-3 and to formulate a
guide for reorganization of these districts into sound efficient units.
The following sub-factors were considered essential to this research,
and were dealt with...
An inspection-repair model is developed that presumes inspection
is hazardous to the system being inspected. The form of the optimal
inspection-repair policy is determined for different ranges of the
model's parameters. The model is formulated as a partially observable
Markov decision process with finite numbers of states and actions.
The...
The purpose of this research was to determine a causal model of factors affecting
age integrated/age segregated neighborhood preference during retirement. Data were anaLzed for 1299 preretirers in four states: Idaho, Michigan, Oregon, and Utah, collected in a mail survey in 1990 by the Western Regional Agricultural Experiment Station Committee...
The purpose of this study was to provide a history of the Business
Education and Secretarial Science departments at Oregon State
University. The historical-documentary method of research was
used. Extensive use was made of interviews with those involved in
the school's history. The chronology of history was divided into segments...
The purpose of this study was to give a fifty-nine year historical overview of the development of the state female juvenile institution, Hillcrest School of Oregon. The material covered in the study included state laws which had direct effect upon the programs at the school; the philosophies and goals of...
The focus of this study was to identify persistent
problems in the developmental history of the American
Department of Defense dependents schools in Okinawa, Japan.
The period of time covered was from 1946 through 1978.
The study includes historical descriptions of curriculum
development, obtaining and maintaining school facilities,
and the...
An approach for developing a computer-based aid to
assist in monitoring and assessing nuclear power plant
status during situations requiring emergency response has
been developed. It is based on the representation of
regulatory requirements and plant-specific systems and
instrumentation in the form of hierarchical rules. Making
use of inferencing techniques...
This study described how and why a Korean elementary teacher taught mathematics as he did. Specifically, the study sought to describe his beliefs about the teaching and learning of mathematics and relate them to patterns of classroom interaction and norms.
An ethnographic inquiry guided the study of one third grade...
The objective of this study is to evaluate the potential of removing organic carbon and inorganic nitrogen contaminants, and metals from the leachate prior to any land application. New guidelines are needed to ensure the environment and our health is not put at risk. The cost of installation, operation and...
I used satellite remote sensing to examine the key factors controlling the natural revegetation of Mount St. Helens since its eruption in 1980. The study required three stages: determining the amount of vegetation present; characterizing vegetation change; and analyzing the influence of factors affecting vegetation change. To determine the amount...
Western juniper has rapidly expanded into sagebrush steppe communities in the Intermountain West during the past 120 years. This expansion has occurred across a wide range of soil types and topographic positions. These plant communities, however, are typically treated in current peer-reviewed literature generically. The focus of this research is...
English holly culture in Oregon has been threatened by the
development of red leaf spots which prevent sale of cut holly.
Chemical, mechanical and insect injury and boron deficiency have
been shown in the past to cause different types of red leaf spotting,
but the cause of holly scab, a...
In recent years, changes in values have occurred in major elements of the population, most notably among the late adolescents and the college students. That this holds portent for the future was referred to by Revel in WITHOUT MARX OR JESUS when he said, "The American revolution is without doubt...
The most important part of parallel computation is communication. Except in the most embarassingly parallel examples, processors cannot work cooperatively to solve a problem unless they can communicate. One way to solve the problem of communication is to use an interconnection network. Processors are located at nodes of the network,...
We describe spatio-temporal random processes using linear mixed models and discuss estimation, inference, and prediction under this formulation. We show how many commonly used covariances are special cases of this more general framework and pay special attention to the separable and product-sum covariances. The linear mixed model formulation facilitates straightforward...
In the context of forest products, a cutting order is a list of dimension parts along with demanded quantities. The cutting-order problem is to minimize the total cost of filling the cutting order from a given lumber grade (or grades). Lumber of a given grade is supplied to the production...
The professions of counseling, marriage and family therapy, and social work are highly controlled with regulators frequently issuing findings of professional misconduct against clinicians. Although much research has been conducted with regard to clinician professional misconduct in general, there is a scarcity of research investigating the relationship between gender and...
A liquid sulfur dioxide battery, such as K/KCl SbCl₅ (0.25
molar) + IBr₃ (15 %wt) + SO₂ (1)/carbon matrix is shown to have an
open circuit voltage greater than 3.70 volts and an initial voltage of
3.15 volts, decreasing to 2.40 volts in 10 minutes at a current density
of...
The purpose of this dissertation was to increase understanding of adolescent school counseling groups including a literature review of the quantitative outcome research on group work with adolescents in the schools and a qualitative exploration of the adolescent experience of cohesion in rural school counseling groups. Outcome research on group...
This dissertation explores mathematical theory of the 3 dimensional incompressible Navier-Stokes equations that consists a set of partial differential equations which govern the motion of Newtonian fluids and can be seen as Newton's second law of motion for fluids. The main interest of this work focuses on how local perturbation...
Being old and female in America often means being alone and poor. To offset this outcome financial preparation for retirement should begin in the pre-retirement years. The purpose of this exploratory study was to assess the financial preparedness of mature, single women as they approach retirement by examining the relationships...
It was the purpose of this study to investigate the educational,
occupational, and personal experiences of the 1967 graduates from the
Roseville Joint Union High School District over a five year period
(1967-1972). Also, the study was designed to secure data concerning
the attitudes of these graduates concerning their perception...
Purpose: The purpose of this study was to determine f the Basic
Educational Opportunity Grant program at Oregon State University
achieved its goal of providing equal access to the benefits of higher
education for students who have low financial resources as compared
to students not receiving student financial aid.
Design:...
The purpose of this study was to determine whether the student
financial aid programs administered through the Financial Aid
Office at Oregon State University have achieved their objectives
of accomplishing the goals of financial aid in higher education
for Oregon community college (OCC) transfer students who receive
financial aid. This...
The purpose of this study was to investigate the change in perception
of the university environment that occurred in students who
participated in two forms of university governance at Oregon State
University. Students who participated as members of joint student-faculty
committees (university committees) were compared with members
of all-student committees....
This study investigated some functional and
biochemical characteristics of a bacteriolytic protein in
the salivary glands of adult Aedes aecupti. A method for
the isolation of this protein from other mosquito salivary
gland components is also described. Based on some of its
biochemical properties, this bacteriolytic protein can be
classified...
The dominant controls on flow generation in steep, forested hillslopes are poorly understood. This dissertation examined the dominant flow processes operating at the hillslope scale, using a combined macroscale measurement and model development and analysis framework. Irrigation experiments at two steep forested hillslopes were conducted to isolate individual hillslope flow...
Depleted species of rockfish (Sebastes spp.) from the Northeast Pacific experience high discard mortality due to "barotrauma," induced from the rapid change in pressure during capture. Research suggests rockfish have the potential to survive barotrauma if immediately recompressed, but the potential for long-term recovery is unknown. In this project, we...
Energy expenditures, perceived family well being, and energy
conservation actions were analyzed by family composition and level of
income. Data were from a three state subsample (Arizona, Colorado,
and Oregon; N = 2,633) of a larger stratified random sample of
households in the Western United States. Data were collected in...
The concept of marketing, with its primary focus on
meeting customer needs, is being adopted by federal agencies
such as the U.S. Forest Service who are in the business of
providing, among other things, recreation opportunities for
their visiting public. Although not a new concept, the
notion of applying marketing...
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...
A mathematical model simulating mass transport of chemicals
in saturated porous medium is given in four parts. Included in the
development is the physical phenomenon of adsorption of molecules
of chemicals on the surrounding walls of the porous medium. The
four main areas of study are:
(1) Simple one dimensional...
Occurrence of human error in highly complex systems, such as a cockpit, can be disastrous and/or overwhelmingly costly. Mismanagement of multiple concurrent tasks has been observed by researchers to be a type of repetitive human error in previous studies of accidents and incidents. This error may occur in the form...
Given a sample from a population whose distribution belongs to a
parametric family we would like to make predictions on the outcome of
a statistic (generally the sample sum) of a future sample from the same
population. These predictions can be in the form of intervals with some
associated level...
The slope parameter "a" of the π ° - electromagnetic transition form factor was obtained from a measurement of the partial branching ratio of the Dalitz decay π° - e⁺ e⁻ y into high invariant-mass electron-positron pairs. The experiment was carried out at the TRIUMF cyclotron laboratory. A beam of...
In a search for new therapeutic agents, a series of Mannich bases
derived from the following 2-phenylindolizines were prepared: 2-phenylindolizine, 1, 2-diphenylindolizine, 3-methyl-2-phenylindolizine,
3-ethyl-2-phenylindolizine, and 1-(2-hydroxyethyl)-2-phenylindolizine.
The investigation was based on the speculation that indolizine
analogs of physiologically active indoles might be useful medicinally.
A certain group of indoles, all...
The Penn-State/NCAR MM5 mesoscale model was adapted for mesoscale simulations of the Martian atmosphere (the OSU MMM5). The NASA Ames Mars GCM provides initial and boundary conditions. High-resolution maps for albedo, thermal inertia and topography were developed from Mars Global Surveyor (MGS) data; these baseline maps are processed to appropriate...
In three separate trials rats were fed either a basal diet deficient
in selenium and vitamin E or the same diet supplemented with
one or both of these factors. In addition to these treatments in two
of the trials, ethoxyquin was included to provide adequate lipid antioxidant
protection and to...
A technique was developed in the present study to determine
fault-plane solutions for small earthquakes. The method uses the
direction and amplitude of initial P-wave motions recorded at a
small number of seismic stations for epicentral distances less than
2000 km.
Seismic arrivals recorded on short-period seismograms were
identified as...
This thesis considers the problem of estimating the linear
parameters of generalized linear models (GLM), especially binomial
and Poisson regression models, when the explanatory variable is
subject to measurement error. In this situation, the dependence of
the response variable on the observed explanatory variable cannot
typically be modeled as a...
A numerical technique is presented for solving the gas dynamics
of a pulsating combustor. The computer solution which is developed
follows directly from the fundamental conservation laws applied to
discrete volumes rather than attempting either to finite difference the
resulting partial differential equations, or to apply the Method of Characteristics....
In this paper, the general mathematical theory of linear
passive one-ports and the class of positive real functions are briefly
reviewed as background material. Then a time domain method for
synthesis of a finite lumped RC system is given, which involves
breaking down the given system into n subsystems. Finally,...
The principal objective of this analysis is the
development of a methodological approach that would
permit a more complete evaluation of the physical and
economic consequences of prohibited species by-catch
(PSC) losses, such as occur in the harvest of groundfish.
To achieve efficient management of the several marine
species involved...
This study focuses on the development of a methodology
to evaluate safeguardability of various processes in the
nuclear fuel cycle.
National and international implementation of safeguards
systems has been investigated. It was concluded that
proliferation is purely a political question that,
hopefully, can be prevented by international norms and
diplomacy;...
The primary purpose of this study was to develop and field test a methodology for the assessment of management development needs in industry. The population used to test this methodology consisted of 113 first-line and middle management personnel in three High-Tech companies in the State of Oregon. A mail questionnaire...
Over the last decade the increase in penetration of wind power and its variable nature has begun to add considerable stress to and threatened the stability of the nation's grid. In order to continue growth wind farms will need to have the ability to participate in the same grid frequency...
This research addresses the large-scale group fleet replacement problem with multiple vehicle types of multiple units, under budget and demand constraints. Past research in group fleet replacement is limited and has focused on one vehicle type, with multiples units and constraints. Many studies in fleet replacement have also dealt with...
The counterflow pipeline concept was originated by Sproull et. al.[1] to demonstrate the concept of asynchronous circuits. The basic premise is that a simple architecture with only local communication and control and a simple regular structure will result in increased performance. This thesis attempts to analyze the performance of the...
An automated instrument based on a single-board microcomputer
was developed for use in voltammetric analyses. Operator input of
numerous experiment parameters allows any type of voltammetric
analysis to be implemented and multiple scans to be run unattended.
A three operational amplifier potentiostat is used to control
the cell voltage and...
This dissertation studies the microeconomics of forest fire suppression programs. It starts with an inquiry into the causes of increasing shares of public land management budgets devoted to wildland fire suppression in lieu of hazardous fuel reduction or other pre-fire risk mitigation programs. The first two chapters consider competing economic...
Pollen development is an important process in male flower development, the timing of which may be correlated with time of pollen shed in hazelnut (Corylus avellana L.). Early to very late blooming cultivars were identified and the relationship of microsporogenesis and microgametogenesis, and time of pollen shed were studied in...
In order to understand better the defect structure and dynamics associated
with lower valent dopants complexed with native defects in group IV oxides, In/Cd
perturbed angular correlation spectroscopy was performed in ceria and zirconia. Examining
the orientation symmetry axis of defects in ceria single crystals at low temperature
has allowed...
The Philippines’ labor export system is a complex web of policy instruments that have been amended, repealed, and refined over the last four decades. The laws along with the hortatory tools used to promote them have shaped the lives of millions of Filipinos, separating families across oceans. Temporary labor migration,...
A well-defined, quantitative model for determining soil contrast
was developed to improve soil survey interpretations concerning the
effects of mixtures of different kinds of soils on agricultural land
use. The model was evaluated by determining the levels and reasons
for soil contrast on mapped soil areas representing 5 different
landscapes,...
The purpose of this study was to develop and test a model in which
video materials are effectively used to develop students' listening
communication ability. In order to reach this goal, the researcher
designed the study procedure. In phase one, literature was reviewed to
establish the theoretical framework for the...
Teachers and administrators spend many hours of work reviewing
the State of Oregon Guidelines and drafting district guidelines in an
attempt to make the process of evaluation positive and productive.
Most districts agree the primary purpose of evaluation should be for
the improvement of instruction.
The amended state law, ORS...
A problem confronting the Corps of Engineers and other water resources planners in the Pacific Northwest is the prediction of anadromous fish enhancement benefits that would result from a proposed high dam project. These benefits are expected from augmenting natural streamflows with relatively cold reservoir withdrawals. The resulting increased streamflows...
Training of woodsworkers is described as important for the logging industry in
Oregon. There has been little documentation of training gains or research that measures
the effects of training from the perspective of the logging firm. Learning theories are
evaluated and Towill's form of learning curves are selected for an...
A model is developed that allows the prediction of the stress-strain
distribution in a mixed carbide sphere pac fuel pin during
irradiation. The model is coupled with a previously developed model
for the thermal behavior of the pin. The one-dimensional (radial at
various axial locations) solution is for quasi-steady pin...
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...
The respiratory tract is lined with a mucous blanket which is
motivated by a ciliated epithelium. This blanket includes a lower
serous layer of fluid through which the cilia beat and an upper viscid
layer into which particulates from the inhaled air are deposited.
The movement of the mucous blanket...
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 objective of this study was to assess the effects of
forest management intensity on long-term productivity of Pacific
Northwest Douglas-fir forests. The components of management intensity
included rotation length, timber utilization standard (whole
tree or bole only), method of slash treatment (remove/burn or leave)
and fertilization practice (urea nitrogen...
To facilitate policy making and improve understanding of issues facing the New Zealand forest sector, a spatial equilibrium model was developed for log and lumber trade in the Pacific Rim. Regions included in the model were New Zealand, Chile, Australia, Japan, Eastern Canada, British Columbia: Coast and Interior, and the...
For control of a flexible manipulator, the assumed- mode method is applied to the mathematical model of the model reference adaptive system. In the assumed-mode method, the flexible, continuous manipulator is described by a limited number of degrees of freedom. A modified model reference adaptive system is studied for direct...