Digital Commons Network^™

Simulation And Design Of Field Emission Diode, Yun Yuan

Theses

A new generation of microelectronic devices utilizing vacuum field emission cathodes becomes surging interest in recent years. This paper concentrates on the study of the field emission diode — a basic vacuum microelectronic device. The field emission efficiency, current spatial distribution and time dispersion of conical tips and wedges of various geometrical shapes are compared and calculated by analytical methods and computer simulations. Two field emitter heating effects, namely the Joule heating and Nottingham effect, are discussed theoretically. All the simulation results in this paper are performed on 386 based personal computer. The limiting memory space of PC induced simulation …

Infrared Tv Camera With Ptsi Schottky-Barrier Detectors, Steven J. Blume

Theses

An infrared TV camera was developed for operating various sizes of Schottky-barrier IR-CCD image sensor chips. A digitally programmable frequency synthesizer is used so that the camera has the flexibility of using a 160 x 244 or 320 x 244 image sensor developed at the David Sarnoff Research Center. The outputs of the camera are compatible with an XYZ monitor, a standard TV monitor, and a computer workstation. Operation of the camera was demonstrated with a 160 x 244 image sensor producing an output on a standard TV monitor. Performance of the IR-TV camera system was investigated by evaluating CCD …

Investigation Of The Fluid Dynamics Of Bioprosthetic Heart Valves, Carol A. Calta

Theses

There is a strong connection between altered arterial blood flow and vascular disease. The presence of disturbed flow and/or excessive turbulence is an indication of an abnormality within the cardiovascular system. The examination of cardiovascular fluid dynamics provides insights into the working of the cardiovascular system and ways to improve the design of implantable bioprosthetic valve designs. This investigation examines the fluid flow of arterial systems, and ways to apply this knowledge to the valves implanted into patients.

This thesis involves an investigation of the testing of bioprosthetic valves within simulated left heart flow loops. These systems include pulse duplicators …

Performance Analysis Of A Dynamic Reservation Multichannel Local Area Network, Abubakar A. Ibrahim

Theses

A reservation multiaccess protocol. is proposed to be used on multichannel local area networks. This protocol is advantageous for networks supporting integrated services. The delay and throughput performance for message transmission are obtained by analysist The delay performance of the protocol is similar to the M-CSMA/CD/IC multichannel network proposed by Marsan and Roffinella. It is found that the reservation protocol can provide better throughput-delay characteristics when the fraction of the total available bandwidth allocated to data is increased. It is also observed that the maximum throughput increases with the increase in the number of channels when the total bandwidth is …

Analytical And Experimental Study Of Robotic Peg-In-Hole Insertion, Yilun Jia

Theses

A mathematical model of robotic peg-in-hole insertion, which relates insertion force and moment to manipulator compliance and geometric constraints, is presented. Based on this model, the effects of manipulator compliance and geometric and positional parameters on the insertion are studied. The complete expressions for determining the insertion forces and moment as well as the peg kinematics are derived. The study is helpful to reducing insertion force and moment and avoiding possible jamming during the insertion process. The model is verified experimentally on the IBM 7540 robot.

The Design Of Decentralized Optimal Regulator Systems Using Matrix Minimum Principle, Sunny Lai Yick

Theses

This research considers the design of linear, time-varying regulator systems using Matrix Minimum Principle in the frame work of decentralized control theory. The regulator system is modeled in terms of state equation with multiple controllers. Each controller works cooperatively to optimize a common quadratic performance index. An additional constraint is imposed such that the controllers are linear time-varying functions of the outputs.

Necessary and sufficient conditions for optimality of the system are provided by the Matrix Minimum Principle and Hamilton-Jacobi Theory.

Two examples are developed to illustrate the concept.

A Packaging/Foodservice Analysis: A Fruit-Filling Study, Damon Andrew Revelas

Theses

Not listed.

Association For Retarded Citizen's Deliworks Cafeteria, Suzanne Malo

Theses

Not listed.

Water-Based Flexographic Ink Specifications And The Effect They Have On The Ability To Print Within Tolerance Upc Symbols On Single-Wall Corrugated Board, Joseph Palmeri

Theses

The primary objective of this study was to determine the effect water-based flexographic ink specifications have on the overall print quality of Universal Product Code (UPC) Symbols. The study built on work done in 1980 by George Huddleston of the Mainville Forest Products Corporation. Selected for the study were two inks that closely resembled the ink specifications identified by Mr. Huddleston. The quantification of quality was made by printing UPC Symbols on single-wall corrugated board with the flexographic printing process, and observing the percentage of these symbols found to be printed within tolerance. These figures were then compared to the …

Services Available To Alzheimer's Diseased Patients And Their Families, Ricky A. Fielder

Theses

The focus of this project is an overview of services that are available to Alzheimer's Disease clients. Since our society has seen an increase in the number of patients diagnosed with the disease, it's necessary to plan into the future and direct our goals in providing good health care.

One wants to be capable of handling every aspect of the disease we see today. One must also protect the client and health care professionals. The client must be allowed to live a productive and happy life. Unfortunately, because of the disease process, I feel it robs the client of the …

An Art Therapy Program For Women Who Are Chemically Dependent And/Or Victims Of Domestic Violence: A Training Manual, Mary H. Cook

Theses

Women who are chemically dependent and/or victims of domestic violence have difficulty identifying and expressing feelings. One of the most important aspects of recovery is learning to feel again and to talk a bout feelings.

Art therapy is a form of psychotherapy in which the therapist utilizes visual expression as a means of communication. The most common traits of these clients are low self-esteem, depression, anger, and a sense of helplessness . By making the issues symbolic, art therapy facilitates communication and reduces confusion.

This study presents an overview of art therapy, and a training manual is included for therapists …

Distributed Object-Oriented Discrete Event Simulation, Barbara Hendry

Theses

This paper presents criteria for an 'ideal' simulation language, compares four traditional simulation languages to this ideal and concludes that an object-oriented approach to simulation comes closer to the ideal than the traditional procedural approach. It also examines how the object-oriented approach can be very beneficial for distributing a simulation problem among several machines. A distributed object-oriented package is described and a manufacturing example written and explained using this package.

Data Security: The Securing Of Computer Installations And Data Sets, Willy B. Kuehnle

Theses

No abstract provided.

Quantitative Determination Of Polymerase Chain Reaction Product For Hiv-1, David Brewer Latart

Theses

A method to detect and quantify polymerase chain reaction (PCR) product from a DNA target fragment associated with Acquired Immunodeficiency Syndrome (AIDS) was developed. The current method to detect PCR product is by Agarose Gel Electrophoresis and staining with ethidium bromide, but quantitation is by the operator's estimation. As a result of this project, the PCR product can be detected by High Pressure Liquid Chromatography (HPLC) and the amount of product can be determined by using an internal standard. By detection of the PCR product on the HPLC and subsequent quantitation, the efficiency of the PCR can be determined. Samples …

Automated Boundary Detection Of Echocardiograms, Rolando Raqueño

Theses

Two-dimensional echocardiograms of the left ventricle of the heart have been used to produce three-dimensional wire frame reconstructions of the inner wall of the left ventricle chamber. Currently, this process is accomplished by tracing the boundary of the images manually after applying simple image processing algorithms. This manual interaction is a very tedious and time consuming step in the three-dimensional and four-dimensional reconstruction process. It would be desirable to remove as much operator interaction as possible from the process to improve repeatability and decrease throughput time.

This thesis investigated and implemented several basic and novel image processing algorithms which automatically …

The Relationship Of Life-Script Decisions To Occupational Interests, Jacqueline Holler

Theses

This study considered the relationship of life-script decisions to an individual's occupational interests. A variety of definitions and functions of work were discussed, and the influences or early family parenting styles and mode-ling were explored.

The theory of Transactional Analysis was used as the basis tor explaining emotional and psychological needs of individuals. The origins of the three ego states, Parent, Adult, and Child, were described and defined The life script, or life plan, of individuals, developed from decisions: which are based on messages and modeling from parental figures, was used to determine the executive ego states of the subjects. …

The Relationship Between The Number Of Sexual Harassment Incidents Reported In The Manufacturing Industry And Personnel Administrators' Knowledge Concerning The Problem, Brenda J. Willenborg

Theses

This thesis focuses on sexual harassment in the workplace and how it relates to personnel administrators' knowledge thereof.

As sexual harassment claims rise, businesses suffer tremendous financial loss. However, most researchers believe that many claims could be prevented if businesses implemented strong anti-sexual harassment policies, in addition to education and training for all employees. Personnel administrators are often assigned these difficult tasks without much thought as to how well-informed they may be about sexual harassment. If not very knowledgeable themselves, how practicable will their prevention programs be?

The purpose of this study is to determine whether there is a relationship …

An Examination Of The Efficacy Of Shelter Residence In Empowering Battered Women, Janette Bizzell

Theses

This study was an effort to provide a research basis from which to judge domestic violence shelter programs' effectiveness in empowering battered women. The instrument used to gather statistical information was the Survey for Residential Clients of Shelters for Women CSRCSW>, a 20-item, self-report questionnaire, designed to measure empowerment at pretest and posttest intervals. The subjects were 25 battered women who were sheltered at The Women's Center, in St . Charles, Missouri, from 21 to 30 days. These women participated in an intensive, highly-structured program geared toward independent living , and empowerment, defined as the renewed ability to act …

Postpartum Depression, Mary Maguire

Theses

This review describes the three common postpartum psychiatric syndromes, including postpartum blues, postpartum neurotic depression, and postpartum psychosis. It discusses both early and recent studies which have explored emotional and physical symptoms and differing views of 1 etiology. Etiological factors discussed include genetics, physiological abnormalities, predisposing psychological characteristics, maternal expectations, demographics, child temperament, neonatal risk, marital relationship, the new mother's relationship with her own mother, social support, and precipitating stressful life events.

Emotional lability in the first few days following delivery is often hormonally based, but a significant degree of research suggests that a more severe postpartum depression is linked …

Logos Parent Manual, John Dennis O'Brien

Theses

The purpose of this culminating project was to develop a manual to assist parents of students enrolled in Logos High School in St. Louis. Logos combines a high quality academic program with an innovative day treatment program for troubled adolescents.

The project was designed as a qualitative approach to applied field research for program development. It used a participant observer and a Delphi Nominal Technique to gather and analyze the responses of reviewers. Some of the reviewers were themselves participants in a process of dynamic family change while others were professionals.

Until the publication of this manual, the Logos wisdom …

The Relationship Between Self-Concept And The Concept Of God Among Students Of Psychology, Mary Cassilda Obowa

Theses

The purpose of this study was to investigate the relationship of an individual's self-concept to their concept of God. Subjects were 62 volunteer undergraduate and graduate students from Lindenwood College in St. Charles, Missouri. Subjects were administered the Spilka God-Image Semantic Differential and the Tennessee Self-Concept Scale. Pearson Product-Moment Correlation Coefficients were obtained utilizing the scores of 60 subjects with valid scoring as well as with the scores of 31 1 subjects whose self-concept was above the mean. When the scores of all 60 subjects were used, there was one significant correlation between the loving God scale and the moral-ethical …

The Impact Of Product Line Management For Women's Services In Healthcare, Jill M. Skyles

Theses

This paper will focus on the problem of poor utilization of resources in women's health care and how product line management may allow for a cost effective means of providing quality care with optimal use of resources.

In the past decade, hospitals have had to adjust to changes in the payment system. This has forced hospital executives to develop and implement innovative management strategies to continue to provide quality patient care, while keeping costs at a minimum.

Research has attributed the lack of product line management in health care to a basic misunderstanding of product line management. In the past, …

Inconsistencies And Turnover, Lori A. Strawhun

Theses

In any organization, turnover is inevitable - employees come and employees go. A great deal of research has been devoted to exploring the causes of turnover as well as turnover's costs and benefits. There is much to say about turnover. It is a complicated phenomenon affected by many variables and having many effects itself.

To better- understand turnover, several formulas have been created to quantify this phenomenon in terms of percentages. These formulas are presented and one formula was used to examine a company referred to in this text as "Company X". There is little agreement on how much turnover …

A Potter's Point Of View, Kathy J. Baldwin

Theses

A mature artistic style ln ceramics has the capability of reflecting the potter ✓ s ideas, feelings, and philosophy. Many influences may effect the formation of this style. As the artist reacts to various influences a new level of development or maturity may begin. The work displayed in my Graduate Exhibition at Lindenwood College represents six phases of development. Skill in creating wheel-thrown pottery was developed in the first phase by doing production pottery work. The technique of faceting was introduced in the second phase as a result of the influence of Rosalyn Tynge. A more sophisticated appearance was achieved …

An Investigation Into The Resistance Factors Associated With The Use Of Computers In Office Automation, Norman L. Davis

Theses

This thesis will investigate the resistance factors associated with the use of computers in automation.

Primary and secondary research has shown that high level employees and low level employees resist the use of computers in their work milieu. By studying the use of Electronic Mail, it has been shown that those employees who rank themselves as upper management resist using the computer resources available to them and those employees who rank themselves as lower management also demonstrate resistance. Those employees who rank themselves as middle management do not demonstrate such resistances.

This investigation, and the research that has preceded it, …

The Relationship Between Depression And Loss, Support System, And Perceived Health Of The Elderly, Eleanor M. Foehner

Theses

Adults between the ages of 65 and 90 were the subjects of a study to explore the relationship between depression and the variables of personal loss , support system, and perceived physical health . Thirty- four subjects completed a self- administered depression scale (the Geriatric Depression Scale) and a personal information sheet . The relationships between depression and perceived personal health was significant , as was the relationship between depression and the support system. The relationship between depression and loss was not significant . As one's perceived health became better , depression decreased . Likewise, as one's support system increased, …

Motherhood After 30: The Choice Is Yours, A Workshop Manual, Pamela Lusk Gween

Theses

This manuscript looks at the highly complex decisions concerning delayed parenthood for the over-30 contemporary woman. There has been a proliferation of popular literature on pregnancy and parenthood after thirty. Yet there is very little information and few resources which focus on the parenthood decision-making process. This workshop manual provides therapists and family planning consultants a vehicle by which to help women and couples over-thirty make reproductive decisions. The workshop was evaluated by 10 over-30 women who attended the workshop. The participants found the workshop to be a valuable experience.

The Impact Of Implementin Effective Employee Communication To Manage The Evolving Work Force, Michelle K. Bray

Theses

This thesis will focus on the study of implementing effective employee communications to manage a diverse work force.

Over the years the practice of public relations has struggled to establish a niche for itself by justifying its existence to corporate America, mainly upper management. As an increasing number of chief executive officers recognize the need for effective communications professional communicators are being strategically placed to best serve the organizational objectives. Unfortunately, the area of internal communications is often neglected.

Research has attributed the lack of effective, open, two-way communications to the false presumption that employees are loyal 10 their employer …

The Use Of Quality Cost Measurement Systems For Improving Profitability, Daniel J. Boehm

Theses

The focus of this study was to determine if t he use of a quality cost measurement system will allow companies to track and analyze costs and provide a means of improving profitability. Focusing on the philosophies and theories developed by W. Edwards Deming, J .M. Juran, and Philip Crosby, three of the leading authorities in the quality control field, a quality control system can be designed to track and analyze quality costs. Quality costs have been grouped into three categories : Prevention costs, Appraisal costs, and Failure costs. Prevention costs are those associated with preventing poor quality such as, …

Designing And Implementing Participative Management Within The Corporate Sector: A Primer, Robert R. Appel

Theses

The focus of this thesis is the study of participative management, in particular the use of quality circles in the corporate sector. After thoroughly researching the information available on quality circles t here will be developed a manual to be utilized to provide information to the managers and potential circle members of a company preparing to implement quality circles.

Research has shown that over fifty percent of the quality circle programs implemented in the United States failed. One of the major causes of this failure rate is the lack of information provided to the employees concerning quality circles.

After a …