Digital Commons Network^™

Norepinephrine And Temperature Regulation In Goldfish, Lonnie Paul Wollmuth

Dissertations and Theses

Cannulae were implanted into forebrain loci of goldfish (Carassius auratus; 45-90 g) to determine (i) the effects and site of action of intracranial norepinephrine (NE) injections on behavioral thermoregulation and (ii) the mechanism and the types of adrenoreceptors involved in the thermoregulatory effect of NE. After 30 min in a thermal gradient, implanted fish were injected with norepinephrinebitartrate salt (2.5-500 ng NE) in a total volume of 0.2 ul (carrier was 0.7% NaCl). Injections of 5, 10, 25, and 50 ng NE into the anterior aspect of the nucleus preopticus periventricularis (NPP1 Peter and Gill 1975) led to consistent, dose-dependent …

Development And Application Of Some Quantitative Stratigraphic Techniques To The Coos Bay Coalfield, A Tertiary Fluvio-Deltaic Complex In Southwestern Oregon, Willard Sidney Titus Iii

Dissertations and Theses

A computer technique for interpreting geophysical logs of drill-holes in quantitative lithologic terms has been developed and tested on the deposits of the late Eocene Coaledo Formation, a well-studied fluvio-deltaic complex in southwestern Oregon. The technique involves the use of induced and natural gamma logs for separation of coal and claystone from coarse-grained detrital rocks and the use of the ratio of resistivity and natural gamma responses (defined here as the "grain size index") to divide the coarse elastic rocks into a series of textural classes corresponding to the Wentworth-Odden particle size scale.

Stratigraphic Model Of The Southern Portion Of The Jim Bridger Coal Field, Sweetwater County, Wyoming, Paul S. Maywood

Dissertations and Theses

Uppermost Lance and lowermost Fort Union Formation sediments are found in outcrop in the southern portion of the Jim Bridger coal field, located on the northeast flank of the Rock Springs Uplift in Sweetwater County, Wyoming. Twenty-nine surface sections and 581 subsurface (borehole) sections were evaluated and used to construct a stratigraphic model.

Stratigraphic correlations with economically mineable coal seams in the Fort Union Formation north and south of the study area combined with definition of questionable local formational boundary locations are significant objectives in this investigation.

Spatial And Temporal Characteristics Of Surface Air Temperature For Portland, Oregon, Li-Min Yang

Dissertations and Theses

This study examines the spatial and temporal characteristics of the surface air temperature in Portland, Oregon. Spatial temperature patterns indicate that the dominant control factors on seasonal temperature distribution are local topography, elevation, and urban-rural differences in surface structure. A heat island exists in the Portland area; the intensity of the heat island rang€s from 4° to 10° F, and varies throughout the year. The strongest heat island is found in the July minimum temperature. Temperature distribution in Portland and the adjacent area is affected by winds and rainy conditions, but less influenced under overcast skies. The long-term temperature over …

Threshold Characteristics Of Multimode Laser Oscillators, Mehdi Khoshnevissan

Dissertations and Theses

The threshold characteristics of multimode laser oscillators are considered in detail, and a new model is given for semiconductor diode lasers. Analytical expressions and numerical solutions are obtained for mode amplitudes, and over-all spectral characteristics of lasers operating above and below threshold. The theoretical results are i n agreement with experimental data. The band-ta-band absorption is included in the model and i t ' s effect is studied on the mixed broadening.

Numerical Solutions Of Continuous Wave Beam In Nonlinear Media, Jeffrey Huang

Dissertations and Theses

Deformation of a Gaussian beam is observed when it propagates through a plasma. Self-focusing of the beam may be observed when the intensity of the laser increases the index of refraction of plasma gas.

Due to the difficulties in solving the nonlinear partial differential equation in Maxwell's wave equation, a numerical technique has been developed in favor of the traditional analytical method. Result of numerical solution shows consistency with the analytical method. This further suggests the validity of the numerical technique employed.

A three dimensional graphics package was used to depict the numerical data obtained from the calculation. Plots from …

Repetitions In The Speech Of Normal Two Year Old Males, Stephanie Herrick

Dissertations and Theses

Development of fluency has always been an important focus of stuttering research. However, to date there are no standardized norms on the development of fluency. Reliable and valid information regarding the normal development of fluency is necessary in order to deferentially diagnose normal disfluency from incipient stuttering. Establishment of norms for part-word repetitions is especially important since this type of disfluency has traditionally been considered an indicator of early stuttering. The present study sought to contribute to the investigation of the development of fluency by examining the frequency of occurrence of repetitions in 30- to 36-month-old males.

Molecular Cloning Of Spinach Chloroplast Dna Isolated By Alkaline Lysis, Robert Gray Drager

Dissertations and Theses

Chloroplast genomes of land plants show conservation of structure and gene arrangement. The spinach chloroplast genome is comprised of a covalently closed. circular DNA molecule of 150 kilobases and is typical of these plants. Approximately 20% of the proteins found in the spinach chloroplast are encoded by the chloroplast genome and translated on chloroplast ribosomes. The remainder are encoded on chromosomes in the nucleus, translated on cytoplasmic ribosomes and transported into the chloroplast.

Spinach chloroplast DNA was isolated from crude 2 chloroplast preparations by a new method. Chloroplasts were lysed with alkaline sodium dodecyl sulfate, contaminating macromolecules precipitated with acidified …

Stratigraphic And Geochemical Evolution Of The Glass Buttes Complex, Oregon, Richard Louis Roche

Dissertations and Theses

Glass Buttes complex lies at the northern margin of the Basin and Range province in central Oregon and is cut by the northwest-trending Brothers fault zone. An older acrystalline volcanic sequence of high-silica rhyolites (>75% SiO₂) forms a broad platform composed of domes and flows with minor pyroclastic deposits. The high-silica rhyolite sequence is divided on the basis of texture into 1) zoned flows and domes, 2) obsidian flows, 3) felsite flows, and 4) biotite-phyric flows and domes.

A Case Study Of A Nationally Recognized Middle School's Decentralized Participatory Governance Structure, Donna Lynn Carman

Dissertations and Theses

To effectively and substantively impact the realization of school improvement goals, there is a perceived need for the implementation of participatory processes that involve parents, patrons, students, and educators through decentralization of the planning, programming, and implementation phases. Related to this need is the pressing requirement of providing educational leaders with a greater understanding of what knowledge and skills they should possess to effectively guide and direct the implementation of decentralized participatory processes. An exploratory case study of a nationally recognized middle school's decentralized participatory structure was conducted. The purpose of this study was to provide the comprehensive context of …

Textural And Mineralogical Characteristics Of Altered Grande Ronde Basalt, Northeastern Oregon : A Natural Analog For A Nuclear Waste Repository In Basalt, Paul M. Trone

Dissertations and Theses

Altered flows that are low-MgO chemical types of the Grande Ronde Basalt crop out in the steep walls of the Grande Ronde River canyon near Troy, Wallowa County, Oregon. The alteration effects in these flows are being investigated as a natural analog system to a high level nuclear waste repository in basalt. The flows within the study are referred to as the analog flow, in which the alteration effects are the strongest, and the superjacent flow. The analog flow crops out at Grande Ronde River level and a roadcut-outcrop is developed in the flow-top breccia of this flow. The two …

An Analysis Of The Shift Of Employment Toward Multi-Sectoral Services Industries In California, 1960-1980, Ayalew Adamu

Dissertations and Theses

The structural change in the United States economy represented by the growth of the service sector has received a great deal of discussion and analysis in recent years. The purpose of this study is to identify the factors that have determined the growth of the separate service sectors (namely distributive, personal, social, and business) from 1960 to 1980 in the regional economy of California. The research addresses many issues. First, a general discussion is presented of the structural change in the United States economy toward a growing service sector. An obvious indicator of this change is the disproportionately higher rate …

Portland State Magazine, Portland State University. Office Of University Communications

Portland State Magazine

PSU’s alumni magazine, published quarterly. In this issue: Joan Strong Buell (MA ’81) provides a place of comfort and care for those close to death at Hospice House; the Middle East Studies Center is back on campus under the direction of Grant Farr; and more.

Segment Congruence Analysis: An Information Theoretic Approach, Jamshid Hosseini-Chaleshtari

Dissertations and Theses

When there are several possible segmentation variables, marketers must investigate the ramifications of their potential interactions. These include their mutual association, the identification of the best (the distinguished) segmentation variable and its predictability by a set of descriptor variables, and the structure of the multivariate system(s) obtained from the segmentation and descriptor variables. This procedure has been defined as segment congruence analysis (SCA). This study utilizes the information theoretic and the log-linear/logit approaches to address a variety of research questions in segment congruence analysis. It is shown that the information theoretic approach expands the scope of SCA and offers some …

Interregional Competition In The Wood Products Industry: An Econometric Spatial Equilibrium Approach, M. Hossein Haeri

Dissertations and Theses

This study presents a multiregional model of the soft wood forest products industry in the United States, designed to describe the dynamics of interregional competition in the industry and to provide means for policy experimentation and short-term projection of regional market shares. Two products (softwood lumber and plywood), five product supply regions (including Canada), and six product demand regions are recognized. The design of the model is based on a combined top-down/bottom-up approach and consists of three interdependent components: (1) the aggregate product market, (2) regional product markets, and (3) regional factor markets. Model solutions are obtained by the simultaneous …

Selected Functions Of Nurse Practitioners In Oregon And Some Implications For Nurse Preparation, Mary Jean Schindler

Dissertations and Theses

Purpose. This study was designed to determine the perceptions of the Oregon-certified nurse practitioners (NPs) with respect to their usage, competency, and preparation for selected functions. Clarification of what NP's perceive themselves doing and with what degree of competence could give structure and direction to their preparation. In Oregon, NPs provide specialized primary care in collaboration with physicians and other health care professions and agencies. The performance of an NP may vary according to the specialty, setting, and needs of the consumer. If some functions of the NP could be brought into clearer focus, then not only could benefits come …

Determinants Of The Spatial Distribution Of Peri-Urban To Rural Agriculture In The United States, Ibrahim Amin Abdel-Karim

Dissertations and Theses

Two issues are focal to the subject of the spatial distribution of crops in peri-urban zones. The first deals with developments in the fields of transportation, other technology, urbanization, and other factors which are not only prevalent in developed world economies, but which also are thought to force the cultivation of freshly consumed agricultural commodities away from the immediate vicinity of the market center. The second issue pertains to indirectly consumed crops, which are thought to shun proximity to the market center, where land rents per unit area are characteristically high, even when conditions for productions are ideal. Traditional models …

A Study Of Ability To Choose Appropriate Conflict Behavior Determined By The Relationship Between Locus Of Control And Conflict Behavior Styles, Mary H. Zinkin

Dissertations and Theses

Two major theoretical controversies were addressed in this study: (1) whether conflict behavior can best be explained by personal characteristics or by situational characteristics and (2) whether there is one best way to handle conflict or several effective ways depending on the situation. Specifically, it explored the relationship between locus of control (internal, powerful others, chance) and conflict behavior (nonconfrontation, solution-orientation, control) in situations where choosing each of these strategies was regarded most appropriate. The study gathered data relevant to four questions: (1) Is there a relationship between an individual's conflict behavior style and personal characteristics such as feelings of …

A Comparison Of Principal And Teacher Perceptions Of Principal Leadership Skills, Alan Mark Carlton

Dissertations and Theses

This study examined principals' and teachers' perceptions regarding both the importance of certain leadership skills and the ratings of principals' actual skills. There are strong theoretical bases for the use of principals' and teachers' perceptions in this study. The analysis of perceptions of leadership skills can lead to: (1) an increased awareness of principals' strengths and weaknesses; (2) greater communication between principals and teachers; and, (3) hopefully, increased productivity on the part of principals and teachers. The population for this study included a group of twenty-eight principals who participated in the Confederation of Oregon School Administrators Assessment Center, and teachers …

Synthesis And Characterization Of Some Sf₅- Containing Sulfonic Acids, Robert J. Willenbring

Dissertations and Theses

Pentafluorosulfur (VI) bromide (SF₅Br) adds to olefins of the form CX₂=CX₂, where X= H or F, with the pentafluorosulfur group usually adding to the carbon with more hydrogens attached to it. This series of compounds was used in an attempt to prepare the corresponding sulfonic acid hydrates of the general formula SF₅CX₂CX₂SO₃H·nH₂O, in order to have these compounds tested as possible fuel cell electrolytes. The reaction scheme involved reflux of the SF₅Br adduct with an equimolar amount of sodium sulfite in 50% …

Normative Study Of Phonological Process Patterns Of Preschool Children As Measured By The Assessment Of Phonological Processes, Revised, Lori Jean Griffith

Dissertations and Theses

The questions this study sought to answer were: Do normally developing children exhibit phonological process deviations; what is the frequency of occurrence of each phonological process deviation by age group; and does the number of phonological process deviations and the average total frequency of occurrence of phonological process deviations decrease as age increases?

Elastic-Plastic Analysis Of Axisymmetrically Loaded Isotropic Circular And Annular Plates Undergoing Large Deflections, Aiman Raji Akileh

Dissertations and Theses

The concept of load analogy is used in the elastic and elastic-plastic analysis of isotropic circular and annular plates undergoing moderately large deflection. The effects of the nonlinear terms of lateral displacement and the plastic strains are considered as additional fictitious lateral loads, edge moments, and in-plane forces acting on the plate. The solution of an elastic or elastic-plastic Von Karman type plate is hence reduced to a set of two equivalent elastic plate problems with small displacements, namely, a plane problem in elasticity and a linear elastic plate bending problem. The method of finite element is employed to solve …

The Cognitive Learning Styles Of International Students, Shelley L. Smith

Dissertations and Theses

The purpose of this research was to examine the usefulness of David A. Kolb's Learning Styles Inventory (LSI) as a tool for categorization and analysis of systematic differences between American and International students. The research addressed five primary questions:

1. Are the learning styles of the International students tested different from those established by Kolb in previous studies of American students?

2. Do the learning styles of the International students tested differ among the various groups?

3. Are there differences among the groups of International students tested that can be related to gender?

4. Do the learning styles of the …

A Groundwater Flow Model Of The Aquifer Intercommunication Area, Hanford Site, Washington, Elizabeth G. Simkover

Dissertations and Theses

Intercommunication has been identified between the unconfined and uppermost confined aquifer systems underlying a portion of the U.S. Department of Energy's Hanford Site. Erosional thinning and fracturing of the basalt confining layer within the study area allows physical contact between the two aquifers, but the vertical hydraulic gradient (a required driving force) is small. To better conceptualize the distribution and volume of the leakage occurring between the aquifer systems, this study investigates the confined Rattlesnake Ridge Aquifer flow system, which appears to be more sensitive to the vertical leakage than the overlying unconfined aquifer.

The flow system of the Rattlesnake …

Faculty Senate Monthly Packet December 1986, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The December 1986 Monthly packet includes the December agenda and appendices and the Faculty Senate minutes and attachments from the meeting held November 1986.

Finding A New Voice: The Oregon Writing Community Between The World Wars, Karen Stoner Reyes

Dissertations and Theses

The period of 1919 to 1939 was a significant one for the development of the literature of Oregon and the Pacific Northwest. The literary work produced in the region prior to the first world war was greatly influenced by the "Genteel tradition" of the late nineteenth century. By 1939, however, the literature of Oregon and the region had emerged from the outdated literary standards of the pre-war period and had found a new, realistic, natural voice, strongly regional in nature and rooted in the modern American tradition.

This change came about in large part through the efforts of a small …

Geology Of The Willamette Pass Area, Cascade Range, Oregon, Neil M. Woller

Dissertations and Theses

The Willamette Pass area is situated at the intersection of two hypothesized structural features, the Western Cascade-High Cascade boundary and the Eugene-Denio lineament. It is of interest due to its designation by the U.S. Department of the Interior as a Known Geothermal Resource Area.

Volcanic rocks of Oligocene to Pleistocene age are exposed in the study area. The oldest rocks are the Oligocene-Miocene lavas, undifferentiated, which are a diverse unit of ignimbrites and intermediate to silicic flows. The Oligocene-Miocene rhyodacites are a stratigraphically equivalent unit which is predominantly composed of aphyric rhyodacite flows. Middle Miocene volcanism produced the basaltic lavas …

Faculty Senate Monthly Packet November 1986, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The November 1986 Monthly packet includes the November agenda and appendices and the Faculty Senate minutes and attachments from the meeting held October 1986.

The Formal Language Of Nonobjective Art, Gwen M. Erickson

Dissertations and Theses

As a central issue in my thesis work, I wish to explore a growing interest in the nature of shapes and their relationship to each other and to their environment. The character or personality of a shape is defined for me by its gesture and its color. I like to join shapes with different characters in such a way that they incorporate a sense of movement. The emphasis has not been on competition or conflict, but on a kind of dynamic balance.

As I worked through a series of still life studies last winter, I felt tyrannized at first by …

An Investigation Of Resolution And Addressability Requirements For Digital Display Systems Used In Word-Processing And Computer-Aided-Drafting Applications, Stephen T. Knox

Dissertations and Theses

Two hardware factors contributing to the overall image quality of digital CRTs are display resolution and addressability. The relationship between these two factors and human performance was modeled by a metric of display quality, the Resolution Addressability Ratio (RAR), and investigated within the contexts of Word-Processing (WP) and Computer-Aided-Drafting (CAD) tasks. The findings indicate a perceptual limit to MTF bandwidth improvements, and significant differences in display quality requirements between the two applications. The regression of image quality as a function of RAR metric values resulted in an r² = 0.94 for the WP task and an r² = 0.79 for …