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A Pulse Gas Chromatographic Method For Determining The Dispersion And Surface Area Of Co Oxidation Catalysts, Susan Kay Ohorodnik

Chemistry & Biochemistry Theses & Dissertations

Catalysts composed of platinum and/or palladium on tin(IV) oxide supports with or without silica gel have been developed for the recombination of carbon monoxide and oxygen to form carbon dioxide for use in carbon dioxide lasers. A pulse gas chromatographic method has been developed to measure the chemisorption properties of the catalysts. From the chemisorption measurements, the active surface area and dispersion of the catalysts have been determined.

An Experimental Study Of An Axisymmetric Turbulent Boundary Layer Disturbed By A Periodic Freestream, Chithrabhanu Koodalattupuram

Mechanical & Aerospace Engineering Theses & Dissertations

Behavior of an axisymmetric equilibrium turbulent boundary layer disturbed by a propeller wake in the freestream was investigated experimentally. Tests were conducted in a low speed wind tunnel and measurements of turbulence quantities were made using an X wire probe and a constant temperature anemometer. The boundary layer flow on a cylindrical body was characterized by measuring its gross parameters and comparing them with classical values. Propeller speed was measured using an electronic circuit whose output signal was also used to trigger hot wire probe. Gross boundary later characteristics of the disturbed boundary layer did not deviate appreciably from the …

Boundary Value Problems In Elasticity And Thermoelasticity, Stuart Davidson

Mathematics & Statistics Theses & Dissertations

In this dissertation the author solves a series of mixed boundary value problems arising from crack problems in elasticity and thermoelasticity. Using integral transform techniques and separation of variables appropriately, it is shown that the solutions can be found by solving a corresponding set of triple or dual integral equations in some instances, while in others the solutions of triple or dual series relations are required. These in turn reduce to various singular integral equations which are solved in closed form, in two cases, or by numerical methods. The stress intensity factors at the crack tips, the physical parameters of …

Experimental Studies Of Bulk Optically Controlled Gaas Switches Utilizing Fast Infrared Quenching, Michael S. Mazzola

Electrical & Computer Engineering Theses & Dissertations

This dissertation describes some of the properties of copper-compensated, silicon-doped GaAs (Cu:Si:GaAs) with the purpose of demonstrating the feasibility of the Bulk Optically Controlled Switch (BOSS) concept. The BOSS concept involves the excitation of electrons or holes from selected deep centers in the band gap of a bulk Cu:Si:GaAs photoconductor. The conductivity of the Cu:Si:GaAs crystal can be increased or decreased on command by irradiating the crystal with laser light of different wavelengths in the infrared. Photoconductivities as large as 1 (Ω cm^)-1 were measured to persist for microseconds after illumination by a 7 ns laser pulse with wavelength …

An Application Of The Investment Model For Examining The Effects Of Commitment, Self-Efficacy, And Goal Difficulty On Performance, Brian J. Kaufman

Psychology Theses & Dissertations

This research was designed to test the presumed effects of commitment, self-efficacy, and goal difficulty level on task performance. The investment model of commitment was used to experimentally manipulate commitment levels. Eighty subjects served as their own controls. For a computer typing task, performance baseline was established, then subjects performed additional trials under various commitment-to-study, commitment-to-job, and goal difficulty conditions. Seven hypotheses were tested. Analyses were conducted to determine main effects of commitment-to-study, commitment-to-job, commitment-to-goals and interaction effects among experimental conditions.

Performance score differences were significant for speed, but not accuracy across high and low commitment levels, supporting the hypothesis …

Parallel Process: An Empirical Investigation, Thomas E. Pollack

Psychology Theses & Dissertations

The purpose of the present study was to conduct an empirical investigation of parallel process. The study used a cross-sectional design in which 30 therapy relationships and the corresponding supervision relationships were studied. The therapist assessed the behavior manifested by the patient during a targeted therapy session. Following the subsequent supervision session, the supervisor assessed the behavior manifested by the supervisee during the supervision session. In addition, each of the triad participants (patient, therapist, supervisor) rated the level of anxiety they experienced during the targeted therapy and supervision sessions. Measures of interpersonal style for each of the subjects were also …

Retirement And Re-Entry Decision-Making: A Faculty Perspective, Seth Zimmer

Psychology Theses & Dissertations

Universities are faced with an aging workforce and threatened with deficits in number and quality of replacements for retirees. New policies and programs affecting retirement and workforce re-entry are taking shape. This points to the need for research on the factors used by faculty members in the retirement decision-making process.

Faculty are somewhat unique in that their university roles and responsibilities often allow them to be professionally active simultaneously in other settings. The usual concept of retirement becomes somewhat blurred where faculty members are concerned.

The decision of when to retire and whether or not to re-enter the workforce must …

The Truncated Cauchy Distribution: Estimation Of Parameters And Application To Stock Returns, Paul G. Staneski

Mathematics & Statistics Theses & Dissertations

The problem addressed in this dissertation is the existence and estimation of the parameters of a truncated Cauchy distribution. It is known that when a number of distributions with infinite support are truncated to a finite interval that the maximum likelihood estimator of the scale parameter fails to exist with positive probability. In particular, necessary and sufficient conditions which give rise to instances of non-existence have been found for the exponential (Deemer and Votaw (1955)), gamma (Broeder (1955), Hegde and Dahiya (1989)), Weibull (Mittal and Dahiya (1989)) and normal distribution (Barndorff-Nielsen (1978), Mittal and Dahiya (1987), Hegde and Dahiya (1989)). …

The Role Of The Court Of Justice In European Integration, Frances M. Jacobson

History Theses & Dissertations

This study examines the role of the Court of Justice in the major issues of European integration: dismantling technical barriers to the free flow of goods, protecting human rights within the European Community, and facilitating the free movement of capital, people and services. Success or failure of the Court is measured by whether the member states have implemented its rulings and whether the rulings have aided or hindered the development of a European internal market.

Specific actions of the Court of Justice are analyzed and placed within the context of European integration. The study begins with the European Coal and …

A Study To Determine The Effects Of Lengthy Space Exposure On Tomato Seeds And Plants, Daniel Robert Smith

OTS Master's Level Projects & Papers

Through the analysis of the data collected from the identical planting techniques of the flight seeds verses the control seeds, the following hypothesis was considered: H1-the tomato seeds of the SEEDS program will produce genetically altered mutant plants.

A Study Of Creative And Critical Thinking Abilities Of Traditional As Compared To New Problem Solving Programs In Technology Education, Edward L. Welliver

OTS Master's Level Projects & Papers

The following hypothesis was applied to this study: 1. The research contained in this study will demonstrate that the innovative approach to problem solving in education, characteristic of the "new" Technology Education programs, is more effective than is traditional Industrial Arts instruction.

A Comparison Of Students Attitudes Toward Fashion Merchandising Careers, Stephanie Michele Brown

OTS Master's Level Projects & Papers

The problem of this study was to determine the student's attitudes toward fashion merchandising careers. This study compares male and female student attitudes from San Diego Fashion Institute on the west coast to Commonwealth College on the east coast. This research was to provide the school on the east coast, Commonwealth College, a better way of attracting more fashion students. By studying the attitudes, we can identify the appropriate marketing strategy in attracting these students.

A Study To Determine The Perceptions Of Marketing Education Students At Old Dominion University Toward Respective Programs And Curriculums Offered, Michele Gregoire

OTS Master's Level Projects & Papers

Through the collection and consolidation of data from the undergraduate marketing education students at Old Dominion University, the following objectives were achieved. To determine: 1. Why students enrolled in marketing education classes; 2. To determine the students' perceptions of the curriculum offered; 3. To determine the students' perceptions of the marketing education program at Old Dominion University as a whole.

A Study To Determine Recruitment Strategies Used By Virginia Beach High School Marketing Education Teachers In The Spring Of 1990, Stacie R. Hayden

OTS Master's Level Projects & Papers

The following questions were identified and answered through this study: 1. What were the major recruitment methods used by Virginia Beach marketing education teachers? 2. Which of the recruitment methods used was most successful? 3. Why did students enroll in marketing education programs?

A Study To Determine The Number Of Fashion Merchandising Employment Opportunities, By Type, Available In Virginia Beach, Virginia, Monique N. Jones

OTS Master's Level Projects & Papers

To answer this research problem, the following questions needed to be answered: 1. What are the career opportunities available in the fashion merchandising field? 2. What are the fashion merchandising employment opportunities at the entry level for degree graduates in Virginia Beach? 3. Within each type of employment opportunity, how many people were needed currently and projected for 1993?

A Study To Determine The Recommendation Of A Semester Course For The Marketing Education Program In Virginia Beach City Public Schools, Ruth P. Karangelen

OTS Master's Level Projects & Papers

The following objectives were established to answer this problem: 1. Identify semester courses currently used in Virginia school divisions; 2. Compare curriculum contents of semester courses with current Virginia Beach curriculum content to prevent overlap; 3. Determine the specific semester course that should be recommended to the Marketing Education program in Virginia Beach Public Schools.

A Study To Determine The Influences Guidance Counselors Have On Students Enrolling In Marketing Education At Frank W. Cox High School, Jennifer P. Nopper

OTS Master's Level Projects & Papers

Through the analysis of the results of a survey administered to the guidance counselors and the secondary students enrolled in Marketing Education courses, the following questions were used as guidelines to provide insight on the influences counselors has on the selection of courses: 1. How do high school guidance counselors perceive the Marketing Education courses? 2. What were the students reasons for enrolling in Marketing Education? 3. Who had the most influence on student's decision to enroll in Marketing Education?

Academic Improvement Of Education For Employment Students At Churchland Junior High School After Their First Year Of Enrollment, Alvin L. Mayo

OTS Master's Level Projects & Papers

The objectives of the research were: 1. To determine improvement in the students' overall academic proficiency; 2. To determine improvement in the students' English proficiency; 3. To determine improvement in the students' Mathematic proficiency.

A Study Of The Uses Of Expert Systems In The Training Environment, Edward Patrick Kappes

OTS Master's Level Projects & Papers

The objectives of this study were: 1. to determine if expert systems can be useful in the training environment; 2. to show the types of training that expert systems can assist in solving; 3. to review the available literature to determine the applications of expert systems in the training environment.

The Effects Of A Program To Develop Collaboration On Teacher Interactions And Norms Of Collegiality Within The School As A Workplace, Michael E. Sicignano

Theses and Dissertations in Urban Services - Urban Management

The purpose of this study is to determine the effects of the Effective Teaching Network (ETN), a program designed to develop collaboration among teachers. This study employs the pretest/posttest nonequivalent comparison group design. The treatment group (n = 75) represents an intact group of teachers who participated in the ETN pilot program. Thirty teachers participated in the direct level of treatment, and 40 teachers participated in the indirect level of treatment. The comparison group (n = 77) represents an intact group of teachers who were matched with the treatment group on teacher characteristics and pretest scores. The Professional Collegiality Questionnaire …

The American Influence On The Mindanao Resistance During The Second World War, Michael Anthony Balis

History Theses & Dissertations

This thesis examines the American participation in the development of resistance against the Japanese on Mindanao Island in the Philippines, 1942-1945. Americans directed the overall resistance movement and commanded most of the provinces. As leaders Americans played a key role in the evolution of the resistance from an independent guerrilla force to a partisan force that gave U.S. forces combat and intelligence assistance. The most important information for the thesis came from the MacArthur Archives, the Hayden Papers at the University of Michigan, the U.S. Army Military History Institute at Carlisle Barracks, and correspondence with 14 men who served with …

A Generalization Of Linear Multistep Methods, Leon Arriola

Mathematics & Statistics Theses & Dissertations

A generalization of the methods that are currently available to solve systems of ordinary differential equations is made. This generalization is made by constructing linear multistep methods from an arbitrary set of monotone interpolating and approximating functions. Local truncation error estimates as well as stability analysis is given. Specifically, the class of linear multistep methods of the Adams and BDF type are discussed.

Performance Improvements For Fddi And Csma/Cd Protocols, David Earl Game

Computer Science Theses & Dissertations

The High-Performance Computing Initiative from the White House Office of Science and Technology Policy has defined 20 major challenges in science and engineering which are dependent on the solutions to a number of high-performance computing problems. One of the major areas of focus of this initiative is the development of gigabit rate networks to be used in environments such as the space station or a National Research and Educational Network (NREN).

The strategy here is to use existing network designs as building blocks for achieving higher rates, with the ultimate goal being a gigabit rate network. Two strategies which contribute …

The Role Of Small Peptides In Cancer Physiology And Chemotherapy, Bao-Ling Tsay

Theses and Dissertations in Biomedical Sciences

The targeting of proven anticancer drugs specifically to cancer cells would provide a unique opportunity to restrict neoplasms without damaging the cancer patient. The present research utilizes the phenomenon of illicit transport, i.e. the coupling of normally impermeant metabolites to permeant metabolites, in targeting the drug melphalan to mouse Ehrlich ascites tumor cells. The dipeptide beta-alanyl-melphalan was synthesized and tested in vitro for toxicity towards mouse Ehrlich ascites tumor cells, mouse liver cells, and mouse 3T3 embryonic cells. The parent compound, melphalan, was used as a control treatment. In addition, both melphalan and beta-alanyl-melphalan were utilized in in vivo chemotherapeutic …

The Effects Of Variable Parameters On The Behavior Of Initial Wind Waves, Glen Harvey Wheless

OES Theses and Dissertations

The generation mechanism of short wind waves is generally thought to be a viscous instability at the air-sea interface. The short, regular waves arising from a sudden wind on a still water surface have a dispersion relation which is characteristic of gravity-capillary waves. The effects of variable surface tension, viscosity and shear flow parameters on the behavior of these waves were studied.

A numerical hydrodynamic stability analysis of a coupled laminar shear flow was accomplished by integrating a transformed version of the Orr-Sommerfeld equation, subject to the boundary conditions at a two-fluid interface. Unbounded growth problems usually encountered in a …

Middle Eocene Foraminifera From The Piney Point Formation Of The Virginia And Maryland Coastal Plain, Megan S. Jones

OES Theses and Dissertations

This study examines the foraminiferal fauna, both benthic and planktonic, of the outcropping (45 samples) and subsurface (31 samples) middle Eocene Piney Point Formation in Virginia and Maryland. The primary objective of this study is to further refine the depositional history of the Salisbury Embayment which is represented by the middle Eocene Piney Point Formation. Ninety-six species of benthic and planktonic foraminifera were identified in this study. Of these, several are characteristic of the middle Eocene: Asterigerina texana, Hanzawaia danvillensis, Ceratobulimina exima, Cibicides westi, Chiloguembelitria columbiana, C. stavensis, Testacarinata inconspicua and Pseudohastigerina wilcoxensislmicra. While these were relatively abundant, diagnostic middle …

Effect Of Passive Flow-Control Devices On Turbulent Low-Speed Base Flow, Farid Heidari Miandoab

Mechanical & Aerospace Engineering Theses & Dissertations

Some configurations of blunt trailing-edge airfoils are known to have a lower pressure drag compared to sharp trailing-edge airfoils. However, this advantage in addition to the structural advantage of a thick trailing-edge airfoil is offset by its high base drag. At subsonic velocities, this is attributed to the low-pressure base flow dominated by a Karman vortex street. In the limiting case, the steady separated flow over a rearward-facing step is attained if the periodically shed vortices from a blunt trailing-edge are suppressed by the addition of a base splitter-plate.

Experimental studies in the Old Dominion University low-speed closed-circuit wind tunnel …

Freshwater Transport On The Continental Shelf Of The Southeastern United States, Cheolsoo Kim

OES Theses and Dissertations

The circulation of water over the shelf of the southeastern United States was examined during the Fall Removal Experiment from late October to early November 1987. A steady state, two-dimensional analytical model of wind and density driven flow was used to study the relative importance of driving forces in shelf circulation, fate of freshwater and cross-shelf exchange processes. The inner and middle shelf mean circulation was found to be driven by four major components: (1) longshore wind, (2) longshore pressure gradient, (3) onshore wind and (4) cross-shelf density gradient including freshwater influx. Wind stress was the primary driving force for …

An Extension Of Essentially Non-Oscillatory Shock-Capturing Schemes To Multi-Dimensional Systems Of Conservation Laws, Jay Casper

Mathematics & Statistics Theses & Dissertations

In recent years, a class of numerical schemes for solving hyperbolic partial differential equations has been developed which generalizes the first-order method of Godunov to arbitrary order of accuracy. High-order accuracy is obtained, wherever the solution is smooth, by an essentially non-oscillatory (ENO) piecewise polynomial reconstruction procedure, which yields high-order pointwise information from the cell averages of the solution at a given point in time. When applied to piecewise smooth initial data, this reconstruction enables a flux computation that provides a time update of the solution which is of high-order accuracy, wherever the function is smooth, and avoids a Gibbs …

The Relationship Between Needs And Interpersonal Problems Of Women In Four Interpersonal Categories, Valarie Elaine Sikes-Nova

Psychology Theses & Dissertations

This study empirically assessed the relationship between needs structure and interpersonal presentation in women. Proposed indices for selective attention were assessed as to their ability to detect pathology. The relationship between interpersonal presentation and interpersonal problems were also studied. The measures used were The Picture Identification Test (Chambers, 1976), The Interpersonal Adjective Scales-Revised (Wiggins, 1985), The Inventory for Interpersonal Problems (Horowitz, 1986), and The Marlowe-Crowne Social-Desirability Scale (1964).

Subjects were assigned to one of four interpersonal categories (Friendly-Dominant, Friendly-Submissive, Hostile-Dominant, Hostile-Submissive) on the basis of their self-reported IAS-R and one category on the basis of their counselor-reported IAS-R scores. Subjects …