Index Catalog // ScholarsArchive@OSU

Modeling Oregon’s biodiesel subsidies and their potential effects on the Willamette Valley agricultural landscape

Creator:: Siegel, Ryan W.
Abstract:: The beginning of the twenty-first century has seen an upsurge in petroleum prices and an increased concern over greenhouse gas emissions. Consequently, the interest in biodiesel production has heightened. Policy at the Federal level, such as the blender’s tax credit which provides $1 for every gallon of biodiesel blended with...
Resource Type:: Masters Thesis
Full Text:: committee Dr. Perry, Dr. Jaeger, and Dr. Karow have shown a great deal of patience and grace as I’ve

An economic analysis of household recycling of solid wastes : the case of Portland, Oregon

Creator:: Hong, Seonghoon
Resource Type:: Dissertation
Full Text:: Rettig and Gregory M. Perry for their guidance and helpful comments. Special thanks are extended Co

Cost function analysis of fruit and vegetable processing in an Oregon cooperative

Creator:: Sil, Jayashree
Abstract:: A cost function characterizes a firm's cost-minimizing behavior. It is defined as a function of the level of outputs produced and the prices of factors which enter the production process. Econometric estimation of a cost function allows one to test hypotheses regarding the structure of cost and the structure of...
Resource Type:: Masters Thesis
Full Text:: benefitted from comments given by committee members: H. Alan Love, Gregory M. Perry, and Thomas J. Maresh

Economics of drought preparedness and response in irrigated agriculture

Creator:: Peck, Dannele E.
Abstract:: The impact of recent severe droughts throughout the United States, the potential for climate change to intensify the frequency and severity of drought, and discussion about the future of government assistance in agriculture highlight the need for a transition from drought as ‘disaster’ to drought as ‘managed risk’. However, guidance...
Resource Type:: Dissertation

Essays on conservation policies and agricultural nonpoint source pollution control

Creator:: Tanaka, Katsuya
Abstract:: This dissertation consists of three papers on agricultural nonpoint source pollution and control. The first paper focuses primarily on agricultural land use changes under alternative conservation policies. The second and third papers address environmental implications of these policies and their cost effectiveness. In the first paper, the effect of alternative...
Resource Type:: Dissertation

The value of short run in-stream temperature forecasts : an application to salmonids in the Klamath and John Day Rivers

Creator:: Huang, Biao
Abstract:: Water temperature is an important measure of water quality, as well as a dominant factor affecting aquatic life within the stream environment. Elevated water temperatures can decrease the survival rate of fish in each life stage. Cold water species, such as salmonids, are particularly susceptible to elevated water temperatures. For...
Resource Type:: Masters Thesis
Full Text:: insight motivate my academic endeavors; Dr. Gregory M. Perry for his open door policy, providing great

Pre-harvest sprouting tolerance of a synthetic hexaploid wheat (Triticum turgidum L. x Aegilops tauschii Coss.)

Creator:: Rosa, Andre Cunha
Abstract:: Pre-harvest sprouting in wheat costs farmers millions of dollars every year. Pre-harvest sprouting tolerance (PST) has minimized this problem, but improvement of PST is still necessary. Synthetic hexaploid wheats (synthetics) have been used as sources of genes coding for many useful traits. Two studies evaluated the PST of a synthetic...
Resource Type:: Masters Thesis
Full Text:: . David Thomas, Patrick Hayes, and Gregory Perry, members of my committee for their time and assistance

Estimation of small scale fishery production relationships : the case of the Florida reef fishery

Creator:: Cerda, Rene
Abstract:: This study develops an improved method for understanding economic production relationships in small scale fisheries. This method postulates that gross revenue is a function of physical input quantities, and is based upon the transcendental logarithmic function to derive factor share equations for each of the five inputs in the model....
Resource Type:: Masters Thesis
Full Text:: , Dr. Wesley Musser, and Dr. Gregory Perry for their observations and comments on this thesis. I

Optimization of seasonal irrigation scheduling by genetic algorithms

Creator:: Canpolat, Necati
Abstract:: In this work, we first introduce a novel approach to the long term irrigation scheduling using Genetic Algorithms (GAs). We explore the effectiveness of GAs in the context of optimizing nonlinear crop models and describe application requirements and implementation of the technique. GAs were found to converge quickly to near-optimal...
Resource Type:: Dissertation
Full Text:: . Dave Moss, Dr. Prasad Tadepalli, Dr. Robert Paasch, and Dr. Gregory Perry for serving on my committee

The development and analysis of future agricultural landscapes

Creator:: Berger, Patricia A.
Abstract:: Alternative futures studies provide a way for policy-makers and stakeholders to investigate the future impacts of different management strategies by providing representations of possible outcomes. An alternative futures study was undertaken by the Pacific Northwest-Ecosystem Research Consortium for the Willamette River Basin, Oregon, USA, to determine how this regional system...
Resource Type:: Dissertation
Full Text:: members, Dr. Marshall English, Dr. Ross Karow, Mr. Denis White, and Dr. Gregory Perry. In addition, I

The economics of agricultural groundwater quality : effects of spatial and temporal variability on policy design

Creator:: Fleming, Ronald A.
Abstract:: Non-point agricultural contaminants, such as nitrogen, may lower groundwater quality and thereby impose health and environmental risks. The objective of this study is to evaluate tax policies to control agricultural pollutants in a spatially heterogeneous and dynamic setting. The focus of the study is non-point source nitrate contamination of groundwater...
Resource Type:: Dissertation

An analysis of risk management strategies for southern Alberta feedlots

Creator:: Freeze, Brian S.
Abstract:: Feedlot finishing of beef cattle in Southern Alberta involves income risk due to the variability of prices of feeders, feed and finished cattle. Several strategies are available to reduce this risk, including hedging of cattle on feed, participation in a Federal- Provincial government and producer established income stabilization program for...
Resource Type:: Dissertation
Full Text:: . Professors Richard Adams, Steven Buccola, Carl 0'Conner, Thomas Maresh and Greg Perry Special thanks is

Chemically induced pollen supression and subsequent natural outcrossing in selected wheat cultivars (Tritcum aestivum L. en Thell)

Creator:: Lewis, Hal A.
Abstract:: Effective chemical control of pollination would provide an alternative to the cytoplasmic male-sterile system in hybrid wheat (Triticum aestivum L.) production. The objective of this study was to determine concentration, formulation, growth stage of application and genotypic effects on levels of induced pollen suppression and subsequent natural out-crossing from foliar...
Resource Type:: Masters Thesis
Full Text:: as a member on my graduate committee. Additional thanks to Dr. G. M. Perry and Dr. S. L. Broich for

Competitive interactions between Douglas-fir and red alder seedlings : growth analysis, resource use, and physiology

Creator:: Shainsky, Lauri J.
Abstract:: Competitive interactions between Douglas-fir seedlings (Pseudotsuga menziesii), and seedlings of a nitrogen-fixing hardwood associate, red alder (Alnus rubra), were investigated in an addition series experiment. The primary objective of the research was to identify and quantify key processes underlying intra- and interspecific competitive interactions of Douglas-fir and red alder seedlings....
Resource Type:: Dissertation

Defect Mechanisms in Bismuth-based Perovskites

Creator:: Kumar, Nitish
Abstract:: The aim of this research is to develop a fundamental understanding of the dominant defect species and the relevant defect equilibrium conditions for bismuth-containing perovskites to help guide the development of these materials for emerging applications. This is of paramount importance for many demanding applications, because ultimately the defect equilibria...
Resource Type:: Dissertation
Full Text:: fabricated. The BaBiO3 ceramics were sintered in oxygen to obtain a single phase with monoclinic I2/m

Mapping quantitative trait loci underlying genome-wide recombination rate and mating system differences in meadowfoam

Creator:: Kishore, Venkata Krishna
Abstract:: Meadowfoam (Limnanthes alba Bentham; Order: Brassicales; Family: Limnanthaceae) is a self-compatible, predominantly allogamous, insect pollinated species. Meadowfoam oil is a source of novel unsaturated very-long-chain (VLC) seed oils (C₂₀ and C₂₂) with low concentrations of saturated fatty acids (typically less than 2%) and outstanding oxidative stability. Here we report the...
Resource Type:: Dissertation
Full Text:: committee, Dr. Patrick M. Hayes. Dr. James C Peterson, Dr. Tony Chen and Dr. Gregory Thompson for their

Tactics for enhancing conservation biological control of twospotted spider mites, Tetranychus urticae Koch, in Pacific Northwest hop yards

Creator:: Woods, Joanna L.
Abstract:: The twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is a worldwide pest of numerous agronomic and horticultural plants. Conservation biological control of this pest can be unreliable due to asynchrony of natural enemies and certain horticultural practices that have a direct or indirect affect on natural enemies and the...
Resource Type:: Masters Thesis
Full Text:: - like growth habit and is commercially produced on a 5 m trellis system, twospotted spider mites

Microhabitat associations and behavioral dynamics of co-occurring native Pacifastacus leniusculus and invasive Procambarus clarkii crayfish in Oregon's southern Willamette Valley

Creator:: Hanshew, Brett Alan
Abstract:: Biological invasions are the second largest threat to biodiversity following habitat loss, and studying invasions has been a focus of ecological the past two decades. Despite the intense research, many basic questions remain empirically unanswered, particularly in the realm of behavior. The purpose of this research was to explore the...
Resource Type:: Masters Thesis
Full Text:: field assistance from M. O’Neil. I would also like to thank Drs. S. Gregory, D. Wooster, and L.M

Polyoxoniobates: fundamental solubility trend and their application in solution and on the surface of thin films

Creator:: Rahman, Tasnim
Abstract:: Polyoxometalates (POMs) are anions consisting of three or more early transition metals ™ (Gr V and VI) oxoanions (in their highest oxidation state) linked together by a shared oxygen bond to form a 3D framework. Polyoxometalates (POMs) are a rapidly growing class of metal oxo clusters with a wide range...
Resource Type:: Dissertation
Full Text:: two). Jessica K. Jenkins, Radwan Elzeinb, Rafik Addoub, Gregory S. Herman performed XPS analysis on

Theoretical Study of Solvent Effects in Heterogeneous Catalysis using Density Functional Theory

Creator:: Chukwu, Kingsley C.
Abstract:: Heterogeneous catalytic reactions in solvents are important for chemical processes like direct methanol fuels, biomass conversion to biofuels and electrochemical reduction of CO2 to fuels. Numerous experimental studies have shown that co-adsorbates and solvents affect the rate and selectivity of heterogeneous catalytic reaction, therefore fundamental understanding of how co-adsorbates and...
Resource Type:: Dissertation
Full Text:: my committee members, Prof. Gregory S. Herman, Prof. Cory M. Simon, Prof. Goran N. Jovanovic, Prof

Exploratory Studies Within the Exotic Lyonsite Structure

Creator:: Tang, Joseph N.
Abstract:: Structure-property relationships have always underpinned the field of solid state chemistry; dependable structural descriptions are integral to understanding and controlling the physical properties of inorganic compounds old and new. While a handful of crystal structures are celebrated for their versatility, flexibility, and functionality, the existence of more exotic structures is...
Resource Type:: Dissertation
Full Text:: contributed in the review of the manuscript on which this chapter is primarily based; J. N. Tang, J. Li, M. A

Factors that contribute to the effectiveness of online learning technology at Oregon State University

Creator:: Filimban, Ghadeer Zainuddin
Abstract:: With the rapid development of technology, online learning is increasing significantly and becoming a popular method of education for many universities and colleges around the world. Because of computers and the internet, most online learning today is interactive, and sometimes more interactive than the traditional classroom. Students can interact on...
Resource Type:: Dissertation

Search Constraints

Search Results

Limit your search