Digital Commons Network^™

Modeling Techniques For Water Supply Forecasting In The Western United States, David Charles Garen

Dissertations and Theses

Water supply forecasting in the western United States is the prediction of the volume of water passing a given point on a stream during the primary snowmelt runoff season. Most water supply forecasts are produced from multiple linear regression models using snowpack, precipitation, and streamflow measurements as independent variables. In recent years, conceptual watershed simulation models, typically using a time step of one day, have also been used to produce these forecasts.

This study examines model usage for: water supply forecasting in the West and has three specific purposes. The first is to examine the traditional usage of multiple linear …

A Cycle Of Crisis And Violence : The Oregon State Penitentiary, 1866-1968, Joseph Willard Laythe

Dissertations and Theses

This thesis examines seven crises at the Oregon State Penitentiary between 1866 and 1968 which are symptomatic of a larger pathology of power at play at the institution. These prison crises brought the pathology of power out from behind the thick grey walls of the institution and to the eyes and ears of an uninformed public. This arousal of such attention forced the prison to re-evaluate its penal model, enact half-hearted reforms, but then resume to the institution's traditional pattern and style of punishment. This inability to address the crises or resolve the immediate problem points to a larger problem--namely …

Geographic Data In City Planning Departments: The Volume And Use Related To Advancements In Geographic Information Systems (Gis) Technology, Fawzi Saeed Kubbara

Dissertations and Theses

Many local planning departments have acquired and put into use advanced automated geocoding and Geographic Information Systems (GIS) to store, process, map and analyze geographic data. GIS technological advancements in hardware, software, and geographic databases - specifically, in geocoding methods to reference street address data to geographic locations - enable data to be integrated, mapped, and analyzed more efficiently and effectively. Also, technological advancements depend on organizational and institutional environments. The relationships between technological advancements and technical (data mapping and analysis), organizational, and institutional environments are not clear. The purpose of this study is to explain these relationships to help …

Improved I/O Pad Positions Assignment Algorithm For Sea-Of-Gates Placement, Shyang-Kuen Her

Dissertations and Theses

A new heuristic method to improve the I/O pad assignment for the sea-of-gates placement algorithm "PROUD" is proposed. In PROUD, the preplaced I/O pads are used as the boundary conditions in solving sparse linear equations to obtain the optimal module placement. Due to the total wire length determined by the module positions is the strong function of the preplaced I/O pad positions, the optimization of the I/O pad circular order and their assignment to the physical locations on the chip are attempted in the thesis. The proposed I/O pad assignment program is used as a predecessor of PROUD. The results …

International Education In The Public Community Colleges Of Oregon And Washington, Stephan Ernest Cragg

Dissertations and Theses

There were at least five purposes in pursuing research on international education in the public community colleges of Oregon and Washington states. The first purpose was to fully demonstrate a new and original taxonomy of ten elements, or dimensions, found in defining and describing international education. A second purpose was to add to the body of knowledge and research on international education practices at the nation's community colleges through an extensive literature search and original research. A third purpose of the study was to identify and describe the current status of international educational programs and activities of the forty-three public …

Moving Pictures, Melissa Ann Mcclure

Dissertations and Theses

My thesis work includes 10 large drawings that explore the narrative qualities of line movement. I use line in these drawings as a recording device to document both the physical activity of the process and the personal experience that the lines represent. Through this work I attempt to develop a language of visual imagery that is autobiographical in nature. A system of personal symbols and recurring forms make up the structure of this visual vocabulary. Line movement and rhythm provides a sense of the dialog.

Residential Mobility And Revitalization In Portland Between 1970 And 1980: A Study Of The Urban Structural Impacts On Neighborhood Revitalization, Sheka Gassimou Kamara

Dissertations and Theses

Evidence of physical decline due in part to the rapid encroachment of commercial and industrial activity into some of Portland's residential areas in the mid-1960s and efforts to combat the forces of time and change through neighborhood revitalization provide the basis for this study. Additionally, some of the characteristics often employed in explaining the phenomenon in cities are manifested in the city of Portland. For example, Portland is endowed with a distinctive and well established downtown area that provides opportunities for the establishment of businesses as well as white-collar job opportunities. By the standards of the U.S. Bureau of the …

Proteolytic Modification Of The Ca²-Release Mechanism Of Sarcoplasmic Reticulum In Skeletal Muscle, Ute Goerke

Dissertations and Theses

Calcium ions are important mediators in the mechanism of contraction and relaxation of muscle fibers. Depolarization of sarcolemma and transverse tubule causes an increase of myoplasmic ca2+ concentration which induces contraction of the myofibrils. In skeletal muscle fibers, the intracellular Ca²⁺ concentraton is regulated by an extensive membrane system, the sarcoplasmic reticulum (SR). Ca²⁺-release from SR is initiated by depolarization of the transverse tubule via a process referred to as excitation-contraction coupling. The Ca²⁺ - release channel located in the junctional SR plays an important role in this mechanism.

A Partitioning-Based Approach To The Fitting Problem In Special Architecture Eplds, Steffan Goller

Dissertations and Theses

In this thesis, we describe an architecture-driven fitting algorithm for an Application-Specific EPLD, the CY7C361, from Cypress Semiconductor. Traditional placement and routing tools for PLDs perform placement and routing separately. Several placement possibilities are created and the router tries to realize the connections between the physical locations of the cells on the chip. The Cypress CY7C361 has a very unique chip architecture with a highly limited connectivity between the physical cells. Therefore, it is necessary to consider the mutability when the placement of cells is performed. The combination of the two stages is called fitting. The specific architecture-dependent constraints, imposed …

Mineralogy, Geochemistry, And Dispersal Of Opaque Oxides On The Continental Shelf Of The Cascadia Margin, Kommajosyula Subramanya Ravi

Dissertations and Theses

Opaque oxide minerals (ilmenite, chromite, and magnetite) in sands from the Oregon continental shelf have been studied to establish the provenance, dispersal, and grade of potential shelf placer deposits. The study area extends southward from offshore of the Columbia River in northern Oregon to the Klamath River in northern California.

Multiple Code Switching In An Okinawan Speech Community: An Ethnographic Perspective, Izumi Kawamitsu

Dissertations and Theses

The ethnography of communication is a mode of inquiry which investigates relationships between language and culture in a particular speech community. Based on the ethnographic perspective, this study examines a certain way of speaking at a specific historical moment in a specific community. The major focus is two disc jockeys who are characterized as "trilingual" speakers (Japanese-English-Okinawa dialect) and their code switching activities in an Okinawan local radio program.

The three-month field study took place on the island of Okinawa. Data were collected from observations at the two radio stations, transcriptions of the program, and interviews with the DJs, the …

Studies Of Ecological Factors That Affect The Population And Distribution Of The Western Gray Squirrel In Northcentral Oregon, Susan Ann Foster

Dissertations and Theses

The western gray squirrel (Sciurus griseus griseus Ord) occur only in the Pacific states and in a small corner of extreme western Nevada. Field studies of aspects of the ecology of the most widely distributed subspecies of western gray squirrel (S. griseus) were conducted at three sites in the ponderosa pine-Oregon white oak zone on the eastern slopes of Mt. Hood, Wasco County, Oregon, between 1981 and 1989. From 1981 through 1987, a Hunter Cooperation Program provided remains of squirrels shot during the annual late summer-early autumn hunting season. Other data were gathered through capture and release studies, radiotelemetry, and …

Theoretical Studies Of Atmospheric Water Complexes, Xiong Pan

Dissertations and Theses

Intermolecular complexes between Hâ‚‚O and atmospheric species HO, HOâ‚‚, Hâ‚‚Oâ‚‚, O₃, NO and NOâ‚‚ have been studied by ab initio molecular orbital methods. The studies have been performed to the MP2 theory level by using 4-31G, 6-31G, D95, 6-31G**, D95**, 6-311G**, 6-311+G**, 6-311++G**, 6-311+G(2d,lp) and 6-311+G(2d,2p) basis sets. The geometries were fully optimized. The vibrational frequencies were calculated. The Basis Set Superposition Error (BSSE) were estimated. Finally, the binding energies of the complexes were predicted with other thermochemical properties. The binding energies of Hâ‚‚O•HO, Hâ‚‚O•HOâ‚‚, Hâ‚‚O•Hâ‚‚Oâ‚‚, Hâ‚‚O•O₃, Hâ‚‚O•NO and Hâ‚‚O•NOâ‚‚ are estimated to be 5.7±0.6, 8.9±1.0, 7.3±1.3, 1.8±0.2, 1.17 (no …

Teacher Adjustments To Multiple And Continuous Change, Cheryll Brounstein

Dissertations and Theses

This study examined the phenomenon of multiple and continuous change and the adjustments teachers made in response to the phenomenon. The research questions posed by this study are: 1. Is there a phenomenon of multiple and continuous change and if so how is it characterized by the participants? 2. Is there an effect of multiple and continuous change on the participants, if so, how do the participants adjust to the phenomenon and how can these adjustments be described? Methodologically, the strategy for this study was designed to allow for the generation of theory since multiple and continuous change has not …

People, Programs, And Politics: Two Case Studies Of Adult Literacy Classes, Rita Collins

Dissertations and Theses

Past research has not sufficiently addressed the question of what types of adult literacy instructional practice are recognized by participants, i.e., students and teachers, as facilitating learning in Adult Basic Education (ABE) classes. The purpose of this study was to describe instructional practices in two urban literacy programs serving low level adult readers, and to identify which practices were effective in meeting student needs. Effectiveness was measured by the ability of students to achieve learning objectives identified by themselves and the teacher, and included attendance patterns and student participation. Quantitative measures of achievement were not used as criteria since few …

The Metropolitan-Nonmetropolitan Turnaround In The Pacific States (California, Oregon, And Washington): Labor Migration Flows And Economic Deconcentration, Beverly Marie Mclean

Dissertations and Theses

This dissertation examines the turnaround of labor force migration patterns in the states of California, Oregon, and Washington in the 1970s. The focus of the dissertation is the simultaneous phenomena of economic deconcentration and employment migration in nonmetropolitan counties during the turnaround period. The theoretical approach of the research draws from the disciplines of economics, geography, and sociology to develop a model that addresses what attributes of areas attract labor migration flows. The study specifies that labor migration is a function of economic activities, the environment, and accessibility. The research focus is the role that economic and noneconomic factors play …

Theoretical And Experimental Evaluation Of Hysteresis In Atmospheric Chemistry, Theodore Alan Haigh

Dissertations and Theses

This treatise is a recapitulation of the theoretical and experimental study of hysteresis in atmospheric kinetics. The original problem arose from a theoretical study of a series of reactions for clean air. Upon evaluation a bistable equilibrium was predicted. The steady-state analysis had delineated a metastable region for the set of reactions. This bounded region is the hysteresis that this research project evaluated.

Preparation Of Electron Donor And Acceptor Molecules For Porphyrin Derivatization, Christoph Hoefler

Dissertations and Theses

Porphyrins derivatized with electron donating and electron withdrawing groups can be used for artificial photosynthesis. Four new compounds, two electron donors and two electron acceptors, have been synthesized for prospective porphyrin linkages.

Nonlinear Dynamics In Oscillating Waterfalls, Michael Schumann

Dissertations and Theses

The concern of this thesis was to investigate the nonlinear dynamics inherent in oscillating waterfalls.

Peer Response Groups In The Esol Classroom : A Study, Karin Dorothy Krueger

Dissertations and Theses

This qualitative study is introduced through a discussion of peer response groups and the researcher's interest in them. The guiding question of whether peer response groups are as useful for teaching writing ESOL classrooms as in first language classrooms is stated along with supplementary research questions. These are fol lowed by a review of relevant theories and summaries of peer response group hi story, social and cultural factors, and research done on peer response groups in first and additional language classrooms.

The Tensile Strength Of Liquid Nitrogen, Jian Huang

Dissertations and Theses

The tensile strength or the negative pressure required to induce cavitation in a pure liquid has been a puzzling subject. On one hand, the classical nucleation theory has met great success in predicting the nucleation rates of superheated liquids. On the other hand, most of reported experimental values of the tensile strength for different liquids are far below the prediction from the classical nucleation theory. In this study, homogeneous nucleation in liquid nitrogen and its tensile strength have been investigated. In order to carry out the measurement of the tensile strength of liquid nitrogen, different approaches for determining the pressure …

Probabilistic Determination Of Failure Load Capacity Variations For Lattice Type Structures Based On Yield Strength Variations Including Nonlinear Post-Buckling Member Performance, Leander Anton Bathon

Dissertations and Theses

With the attempt to achieve the optimum in analysis and design, the technological global knowledge base grows more and more. Engineers all over the world continuously modify and innovate existing analysis methods and design procedures to perform the same task more efficiently and with better results. In the field of complex structural analysis many researchers pursue this challenging task. The complexity of a lattice type structure is caused by numerous parameters: the nonlinear member performance of the material, the statistical variation of member load capacities, the highly indeterminate structural composition, etc. In order to achieve a simulation approach which represents …

Adsorption Of Halogenated Phenolate Ions To Egg-Phosphatidylcholine Vesicles, Andreas Blochel

Dissertations and Theses

In this study, parameters for the adsorption of several halogenated phenolate ions to egg-phosphatidylcholine vesicles have been determined by microelectrophoresis.

The Synthesis And Chemistry Of N-Chlorosulfenylaziridines, Michael Claude Hare

Dissertations and Theses

Thiazyl chloride, the monomer of trichlorotrithiazene, reacts with fluorinated olefins to form N-chlorosulfenylaziridines. Four members of this new class of compounds have been prepared. Fluorine NMR, carbon-13 NMR, mass spectrometry, infrared spectroscopy, and elemental analysis have been used to characterize these compounds.

Performance Analysis Of Doa Estimation Algorithms Using Physical Parameters, Hui Liu

Dissertations and Theses

Analytical performance analysis on Direction-Of-Arrival (DOA) estimation algorithms has attracted much excellent research in recent years, various statistical properties have been revealed. However, in most of these analyses, insights of the performance were masked because of the involvement of singular values and singular vectors which depend on the character of the algorithms and data structures in a complex and nonlinear manner.

Stratigraphy And Structure Of The Southeast Part Of The Portland Basin, Oregon, Kenneth E. Lite Jr.

Dissertations and Theses

The southeast part of the Portland Basin has been previously described by other investigators. However, little detailed information existed on the depositional relationships between the units, the various sedimentary fades, or the origin of many of the units.

Parameter Uncertainty And Modeling Of Sludge Dewatering In One Dimension, Joseph H. Plaskett

Dissertations and Theses

Separation of liquid from solids is a necessary step in the ultimate disposal of wastewater sludges. Most commonly, sludges are dewatered by pressure-filtration methods. Mathematical models of the physics of the sludge dewatering process would provide the ability to predict dewatering performance and optimize the design and operation of dewatering facilities.

Regional Tectonic Deformation Of The Northern Oregon Coast As Recorded By Pleistocene Marine Terraces, Richard Alan Mulder

Dissertations and Theses

Pleistocene marine terraces of the northern Oregon coast are an important factor in understanding the tectonics and paleoseismicity of the central Cascadia subduction zone. The lowest marine terrace, tentatively correlated to 80,000 year old Whiskey Run terrace of southern Oregon, is intermittently exposed in the present day sea cliff along an 80 km section of coastline between Tillamook Head and Cape Kiwanda. Terrace sediments consist largely of fine material such as clay, silt and fine sand with several locations containing large amounts of gravel derived from nearby headlands and steep bedrock hills. The terrace sediments are interpreted to be deposited …

Comparison Of Spice And Network C Simulation Models Using The Cam System, Wen-Tsung Yen

Dissertations and Theses

The performance of SPICE and Network C (NC) circuit simulator when simulating MOS transistor circuits has been investigated and compared. SPICE analog model, NC analog model and NC MOS_PWL model are the three MOS transistor models being used. The comparison between SPICE and NC includes five areas. They are MOS transistor model, circuit analysis and computational methods, limitation on the ability to simulate circuits containing the MOS transistor diode configuration, run time and the ability to build new circuit component models using derived equations.

The prototype circuit being used is the Content-Addressable Memory (CAM) circuit. The CAM circuit is a …

Limnology Of Two New Lakes, Mount St. Helens, Wa, Valerie Jean Kelly

Dissertations and Theses

Coldwater Lake and Castle Lake are two new lakes which were formed in the aftermath of the volcanic eruption of Mount St. Helens, WA in May, 1980. This research describes the limnology of these lakes ten years later, and includes physical, chemical, and biological parameters. The two lakes are compared and contrasted. Previous research on the eruption and its aftermath, as well as earlier studies of the lakes are described.