Digital Commons Network^™

Load Flow And Contingency Analysis In Power Systems, Kianfar Sorooshian

Dissertations and Theses

A load flow and contingency analysis program for secure design, planning and operation of power systems. Depending on the application either Newton-Raphson or Fast-Decoupled method is employed to solve the load flow. Fault analysis is done by Z bus method. Contingency analysis may be done following the load flow solution by Fast-Decoupled method. The program is also interfaced with a graphic system which displays a single line diagram of the system on the graphic screen along with relevant data and informs the operator of any change by flashing the faulted bus or the line outage.

An Analysis Of The Affects Of Crisis On The Decision Making Practice Of A Dialysis Program: A Case Study, James Christopher Farley

Dissertations and Theses

In 1982 the Health Care Finance Administration mandated changes in the mechanism and financing of the End Stage Renal Disease (ESRD) Program by the provisions of the Omnibus Budget Reconciliation Act. These changes in finances and procedures became effective August 1, 1983 and have created a state of crisis for ESRD facilities program wide. This study analyzes a large non-profit dialysis program and how its decision making practices were affected 2 by the change in Medicare laws. Application of decision theory in health care provides a basis for this study on the affects of crisis on decision making.

This study …

Rain, Eco-Net

RAIN: Journal of Appropriate Technology

Volume 11, Number 1

Inside: Post-Puerile Paradigms; Weed It and Reap; Solar: Big Business

RAIN began in October 1974 as a publication of ECO-NET, an environmental education network funded by the Hill Foundation and an Environmental Education grant. Its office was based in the Environmental Education Center at Portland State University. With a focus on the Pacific Northwest, particularly Oregon, RAIN originally described itself as a “bulletin board” with an “emphasis on environmental/energy related and communications kinds of information” and interested in “the evolutionary possibilities of inter-disciplinary connections.”

Intercultural Communication Problems Of Nigerian Students In The Portland Metropolitan Area: A Comparative Study Of A Review Of Literature And Personal Interviews, Sam Tugba

Dissertations and Theses

This study is an attempt to discover the intercultural communication problems and the methods of coping used by the Nigerian students in the Portland metropolitan extent to which these discovered problems and tried solutions compare with those of other international students that are commonly reported in the literature.

Meeting Notes 1984-09-13 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Rain, Eco-Net

RAIN: Journal of Appropriate Technology

Volume 10, Number 6

Special Issue: Art in Everyday Life; Cultural Animation; Grassroots Art; Bamboo

RAIN began in October 1974 as a publication of ECO-NET, an environmental education network funded by the Hill Foundation and an Environmental Education grant. Its office was based in the Environmental Education Center at Portland State University. With a focus on the Pacific Northwest, particularly Oregon, RAIN originally described itself as a “bulletin board” with an “emphasis on environmental/energy related and communications kinds of information” and interested in “the evolutionary possibilities of inter-disciplinary connections.”

Jewelry From The Environment, Douglas Lawrence Kollmeyer

Dissertations and Theses

This thesis deals with the development of a body of my own creative work and the teaching of jewelry-working in the secondary schools. Emphasis in both instances was given to the use of the natural environment as a stimulus for design ideas. The philosophy of nature as art forms has been the focus of my creative endeavors for several years. This lead to the design and completion of jewelry, flatware, and holloware in this study. Knowledge gained in my work experiences formed the basis and background of the presentation of these skills to secondary students.

Meeting Notes 1984-08-09 , Joint Policy Advisory Committee On Transportation

Joint Policy Advisory Committee on Transportation

No abstract provided.

Effects Of Dehydration On Hemoglobin Oxygen Affinity And Blood Cell Volume In Two Anurans, Andrew Christopher Zygmunt

Dissertations and Theses

Two aspects of possible adaptation in cardiovascular performance caused by increased plasma electrolytes were examined. Cells in anisotonic plasma may either act as osmometers or volume regulate. Blood flow rate is dependent upon cell viscosity, which in turn is a consequence of cell volume and membrane deform-ability. Cell volume changes which increase membrane deform-ability will thus potentially extend the limits of dehydration tolerance. It was found in R. catesbeiana and B. marinus that red blood cell is maintain constant volume during dehydration. Cells in vitro initially lose water, but then sodium, potassium and water move into the cell. Cell viscosity …

Effects Of Urbanization On The Hydrologic Regime Of Johnson Creek, Portland, Oregon, William Vandewater Clement

Dissertations and Theses

The Johnson Creek watershed, Portland, Oregon, has undergone urbanization at an increasing rate. Excessive flooding has occurred in the lower portions of the watershed, resulting in an estimated 1.5 million dollars worth of flood losses annually. In attempts to mitigate the flooding damages millions of dollars have been spent to channelize the creek, and over 200 thousand dollars has been spent during the last 20 years on preliminary feasibility studies alone.

The author saw a need to verify that there has been a change in the rainfall-runoff relationships in the upper Johnson Creek basin since 1941 and to quantify this …

The Effect Of Problem Complexity On The Efficiency Of Intuitive And Analytic Processes, Teresa Farley Kao

Dissertations and Theses

Some investigators have suggested that when material becomes more complex, an individual is forced to use an intuitive process, while others suggest that increasing complexity forces analysis. This study was an attempt to resolve this question by manipulating rate of presentation and instructions. No effect was found due to these manipulations or due to complexity. The reason is not clear, but may be due to a combination of factors which inclined the experiment in the direction of the intuitive process.

Effect Of Menstrual Cycle On Hedonic Response To Gustatory Stimuli, Laurie Ann O'Toole

Dissertations and Theses

The present experiment was conducted to determine the relationship between the human menstrual cycle and gustatory hedonic response. Hedonic response was defined as the perceived pleasantness or unpleasantness of a taste stimulus. Gender differences in taste hedonic have been observed; these may be due to differences in endocrine systems. Animal taste preferences are altered when reproductive hormonal status is experimentally manipulated. Previous researchers report that human females' hedonic responses to sucrose vary systematically with phase of menstrual cycle.

Rain, Eco-Net

RAIN: Journal of Appropriate Technology

Volume 10, Number 5

Inside: Nancy & John Todd: Sacred Ecology; Fukuoka's Last Straw; Computer Co-ops

RAIN began in October 1974 as a publication of ECO-NET, an environmental education network funded by the Hill Foundation and an Environmental Education grant. Its office was based in the Environmental Education Center at Portland State University. With a focus on the Pacific Northwest, particularly Oregon, RAIN originally described itself as a “bulletin board” with an “emphasis on environmental/energy related and communications kinds of information” and interested in “the evolutionary possibilities of inter-disciplinary connections.”

Peri-Urban Agriculture In Western Washington: An Identification Of Factors Of Potential Influence To The Development Of Metropolitan Food Policy, William H. Gray

Dissertations and Theses

Historically, agricultural policy has been developed at the national level, while land use decisions have been made at the municipal or county level. In primarily rural areas, the policy objectives of these domains are largely consistent: agricultural development. In urban areas, however, the food production objectives of national policy and the planning objectives of local government may be incongruent. This research uses the European construct of "peri-urban agriculture" as a framework in which to address the issues confronting both farm producers and metropolitan areas.

The principal hypothesis to be tested in this research is that farmer characteristics differ between peri-urban …

A Comparison Of A Group Approach And A Personalized Approach In Teaching Behavior Management Techniques To Parents, Vicki Martin

Dissertations and Theses

Parent intervention programs that assist parents in increasing their skills in behavior management techniques have experienced considerable success over the last 20 years. Parent training not only aids the parent in changing the child's behavior but may be beneficial in preventing future problems.

When a program of this type is utilized with low income populations, cost effectiveness becomes an important issue. The purpose of the present study was to compare the effectiveness of a parent intervention program when utilizing a group format versus a personalized, one-to-one approach to training.

The Eyberg Child Behavior Inventory (ECBI) was administered pre and posttreatment …

A History Of The Street Railway Systems Of Vancouver, Washington, 1889-1926, David Warren Freece

Dissertations and Theses

The decade of the 1880s was a time of unprecedented development in the Pacific Northwest. Railroads were being constructed, immigration was high, lumber in demand and statehood for Washington appeared imminent. Vancouver, Washington, benefited from this prosperity. In 1888, a Portland firm built a steam powered railway from East Portland, through its real estate development, Woodlawn, to the Vancouver ferry. The success of this enterprise in aiding the sale of real estate was observed by several Vancouver men who formed the Columbia Land and Improvement Company to promote the sale of their property. The company constructed a horse drawn street …

1984 Commencement Program, Commencement

Commencement Archives 1980-89

The program for the Portland State University 1984 Spring Commencement ceremony, held at Memorial Coliseum on June 8, 1984, in Portland, Oregon.

Opening remarks by Loren L. Wyss, Oregon State System of Higher Education.

Career Lines In The Area Of Mental Retardation, Charlotte Ballard

Dissertations and Theses

In the past few years there has been a large growth in the number of facilities and services provided to the mentally retarded in the community, as contrasted to the institutional setting.

This thesis reviews some of the factors involved in the transition to community care for the mentally retarded as a background for an examination of the characteristics and perceptions of the persons who provide community care.

The Effect On Culture-Bound Evaluation By The Intercultural Communication Workshop (Icw) At Portland State University, Marion Franc Sørensen

Dissertations and Theses

The purpose of this study is to investigate the effect on culture-bound evaluation by the Intercultural Communication Workshop (ICW) at Portland State University. An increase in positive evaluation of an intercultural dyad was taken to indicate a decrease in culture-bound evaluation. Methodology consisted of an adaptation of Dawes' "Direct Estimation Techniques" which was utilized in creating the testing instrument. The results are inconclusive but suggest that the ICW training may be more effective in this dimension for the American students than for International students.

Alternating Current Studies And Kinetic Analysis Of Valinomycin Mediated Charge-Transport Through Lipid Bilayer Membranes, Kenneth Lee Cox

Dissertations and Theses

In this study we have investigated the frequency dependence of bilayer lipid membranes for a series of glycerylmonoolein/n-decane bilayers in various aqueous ionic solutions containing the ionophore valinomycin. Reliable values of membrane capacitance and conductance were obtained over the frequency range 0.2 - 200 KHz using an automatic balancing bridge under the control of a microprocessor unit. The admittance data was then normalized and curve-fitted to produce relaxation times and amplitudes from which the kinetic rate parameters, as deduced from a single slab dielectric membrane model, were calculated. These ac experimental rate constants were then compared with those obtained from …

The Dynamics Of The Columbia River Estuarine Ecosystem: Volume I And Volume Ii, Creddp, Charles A. Simenstad, David A. Jay, C. David Mcintire, Willa Nehlsen, Christopher R. Sherwood, Lawrence F. Small

Civil and Environmental Engineering Faculty Publications and Presentations

Integrates results from the CREDDP studies into a comprehensive synthesis. Includes physical setting and processes; relationships between physical and biological processes and among functional groups of organisms; species, biomass and productivity per habitat type per region. Approximately 360 pages per volume.

Integration In West Africa: An Empirical Examination Of Ecowas, Stephen C. Adkisson

Dissertations and Theses

The Economic Community of West African States (ECOWAS) was established by treaty in 1975 to promote the economic and political well-being of its 16 regional members. As a coordinated effort of geographically associated states ECOWAS joins an expanding group of regional integration schemes created by developing countries.

As an international organization with some claim to supranational authority the success of the ECOWAS scheme is of practical and theoretical importance. Success in this sense implies an increasing level of interaction among the ECOWAS members and the development of a regional economic and political position toward non-member states. This coordination of member …

Determination Of Systemic Blood Pressure Via Autospectral Analysis Of Oscillometric Data, Eugene Elie Warner

Dissertations and Theses

The currently accepted methods for measuring systemic blood pressure are either highly accurate but invasive in nature or clinically convenient but prone to observer-related errors. A new oscillometric method uses sensitive signal conditioning and sensing equipment with a non-invasive arm cuff to record arterial pulsations. The goal of this study is to establish more reliable criteria for the identification of systolic and diastolic pressures from oscillometric data.

Measurement Of Low Vapor Pressures: A Kinetic Approach, Samuel Bernard Bliden

Dissertations and Theses

A kinetic model was applied to vapor pressure data obtained by a variable flow method. The vapor pressures of benzoic acid, naphthalene, benzophenone, and phenylhydrazine were measured at temperatures of 293K to 307K. The data are summarized in the data table on the following page. These data were obtained by passing air over a sample of the substance in a tube. The air stream was combusted, and a flame ionization detector was used to measure the mass of CO₂ so obtained. Several different flow rates were used at each temperature with each substance.

Effects Of Intraperitoneal And Intracerebral Injections Of Triiodothyronine On Temperature Selection In Fish, Dennis A. Grahn

Dissertations and Theses

Goldfish (Carassius auratus) of 15-28g were maintained at 23 C and subsequently were intraperitoneally injected with saline (controls) and varying doses of Triiodothyronine (T₃). Following the injection, the fish were placed in a thermal gradient and temperature selection and activity monitored for 30 min. There was no- significant difference between the responses of the experimental fish to the 2 different doses of T₃. However, there was a significant difference in response between the experimental and control groups (P < 0.001). The decreased temperature selection occurred early in the test runs, while the increased activity began later. Larger goldfish (175-205g) received 0.5 μl intracerebral injections of 1.5-3.0 ng T₃ in the anterior brainstem via an indwelling cannula injection system. These fish responded to the injections by …

Early Childhood Education And Compensatory Education In The Portland, Oregon, Public Schools, 1965-1984, Dolores Jean Robinett Pappas

Dissertations and Theses

This investigation had the dual purpose of exploring, in historical perspectives, the academic discipline known as Early Childhood Education and the use of Early Childhood Education as a vehicle for compensatory education in the Portland Public Schools from 1965-1984.

Geology, Alteration And Mineralization Of A Silicic Volcanic Center, Glass Buttes, Oregon, Michael James Johnson

Dissertations and Theses

Glass Buttes, a Pliocene silicic volcanic complex within the High Lava Plains province of Oregon, was erupted approximately 5.0 to 5.8 million years ago. Geologic mapping revealed that the eastern portion of the complex is underlain by rhyolitic glass domes, flows and rare pyroclastic flows. Basalt flows are interlayered with and onlap the silicic glass. Younger basalt flows, erupted from local vents, overlie silicic glass and onlapping basalts.

The eastern end of Glass Buttes is hydrothermally altered at the surface; a weak geothermal anomaly coincides with the altered areas. Alteration, localized by northwest trending normal faults, occurs primarily as opalite …

Derivatives Of Trifluorovinylsulfur Pentafluoride And F-(Tert-Butyl) Hypochlorite, Jo Ann Marie Canich

Dissertations and Theses

Trifluorovinylsulfur pentafluoride dimerizes to (SF₅CFCF₂)₂ in the presence of cesium fluoride. Two derivatives of trifluorovinylsulfur pentafluoride, SF₅CF(CF₃)C(O)F and SF₅CF(CF₃)C(O)NH₂, were used to prepare the new compounds, SF₅CF(CF₃)CO₂H and SF₅CF(CF₃)CN, respectively. The first was prepared by reacting the SF₅-acid fluoride with water, while the second involved the abstraction of water from the SF₅-amide using P₄O₁₀. The attempted preparation of a bis-pentafluorosulfur ketone and a pentafluorosulfur containing acid anhydride …

High Valent Chromium (V) And Chromium (Vi) Complexes, Harry Bennett Davis

Dissertations and Theses

A new preparative route to the only neutral chromium(V) oxide fluoride, chromium oxide trifluoride, has been accomplished by the reaction of xenon difluoride with chromyl fluoride at high temperature. The chromium oxide trifluoride is produced as crystals which are suitable for single crystal studies. In reactions of chromium oxide trifluoride with alkali and alkaline metal fluorides in anhydrous hydrogen fluoride, new chromium(V) oxide fluoride salts were obtained; these salts were not of high purity due to unknown problems. An attempt to prepare chromium oxide tetrafluoride by the reaction of xenon difluoride with chromyl fluoride in anhydrous hydrogen fluoride failed to …

Incest: A Study In Networking In Multnomah County, Oregon, Joanne Mcclarty

Dissertations and Theses

Reported cases of incest in Multnomah County, Oregon, as in the rest of the country, are increasing yearly. Effective networking between agencies is important in order to successfully work with the problem. The research problem of this study was to determine the effectiveness of the present network of agencies working with incest in Multnomah County. In order to evaluate network effectiveness the following objectives were established: to provide a "cultural" description of the major components of the Multnomah County network; to determine whether a common definition of incest among practitioners exists and to compare the networking system in this county …