Digital Commons Network^™

Applications Of Agent Architectures To Decision Support In Distributed Simulation And Training Systems, Plamen V. Petrov

Dissertations

This work develops the approach and presents the results of a new model for applying intelligent agents to complex distributed interactive simulation for command and control. In the framework of tactical command, control communications, computers and intelligence (C₄I), software agents provide a novel approach for efficient decision support and distributed interactive mission training. An agent-based architecture for decision support is designed, implemented and is applied in a distributed interactive simulation to significantly enhance the command and control training during simulated exercises. The architecture is based on monitoring, evaluation, and advice agents, which cooperate to provide alternatives to the …

Simulation And Modeling Of Magnetically-Assisted Impaction Coating (Maic) Process For Dry Particle Coating, Bodhisattwa Chaudhuri

Dissertations

The objective of proposed research is to model, and understand the processes happening at multiple length and time scales in magnetically assisted impaction coating process. The smallest length scale is of the order of the molecular size and is important because during collisions the molecules rearrange themselves to form a semi-permanent bond between the core and secondary particles, which is studied by using the results of direct numerical integration of the governing Newton's equations. The effect of parameters such as size, orientation and relative velocity of particles on the collision mechanics is quantified. The largest length scale which is the …

Design And Analysis Of A Scalable Terabit Multicast Packet Switch : Architecture And Scheduling Algorithms, Feihong Chen

Dissertations

Internet growth and success not only open a primary route of information exchange for millions of people around the world, but also create unprecedented demand for core network capacity. Existing switches/routers, due to the bottleneck from either switch architecture or arbitration complexity, can reach a capacity on the order of gigabits per second, but few of them are scalable to large capacity of terabits per second.

In this dissertation, we propose three novel switch architectures with cooperated scheduling algorithms to design a terabit backbone switch/router which is able to deliver large capacity, multicasting, and high performance along with Quality of …

A Study Of Droplet Burning In The Nearly Adiabatic Limit, Juan C. Gomez

Dissertations

We consider a small drop of liquid fuel that burns in an oxidizing gaseous environment and translates slowly (relative to flow 'at infinity') under the action of gravity. Practical applications include the burning of liquid fuels as sprays in domestic and industrial oil-fired burners, diesel engines, and liquid-propellant rocket motors. More relevant to the simple physical set-up of the present study are wellcharacterized laboratory experiments on the burning of a single, isolated fuel drop.

The drop burns in a nearly spherical, diffusion flame, flame sheet regime. We consider a specific example, or limit, referred to as 'nearly adiabatic burning', in …

Numerical Study Of Particle Dynamics In A Falling-Ball Viscometer, Peiwen Hou

Dissertations

The falling-ball viscometer is a device where a spherical particle falls along the axis of a circular cylinder filled with viscous fluid. The various classical results for this device are developed under the assumption that the Reynolds number of the flow is zero, i.e., Stoke's flow. Inertial effects are not taken into account. To better understand the dynamics of the particle sedimentation process and the role of inertia in this process, we implemented a numerical simulation.

The ADI (Alternating Direction Implicit) scheme is widely used to solve the vorticity-stream function formulation of the Navier-Stokes equation in axisymmetric geometries. However, a …

Synthesis And Characterization Of Low Pressure Chemically Vapor Deposited Boron Nitride And Titanium Nitride Films, Narahari Ramanuja

Dissertations

This study has investigated the interrelationships governing the growth kinetics, resulting compositions, and properties of boron nitride (B-C-N-H) and titanium nitride (Ti-N-Cl) films synthesized by low pressure chemical vapor deposition (LPCVD) using ammonia (NH₃)/triethylamine-borane and NH₃/titanium tetrachloride as reactants, respectively.Several analytical methods such as the FTIR, UVNisible spectroscopy, XPS, AES, RBS, SEM, and XRD were used to study the stoichiometry and structure of the deposited films.

The B-N-C-H films were synthesized over a temperature range of 300 to 8500C at various flow rate ratios of the reactants and total pressure range of 50 to 150 mTorr. …

Interaction Of A Vortex Pair And A Free-Surface : Numerical Simulation, Haisheng Ruan

Dissertations

The interaction between a submerged vortex pair with a deformable free-surface in a viscous, incompressible fluid is directly simulated and the flow is thoroughly analyzed. This is a time-dependent nonlinear free-surface problem which we solve numerically by integrating the two-dimensional Navier-Stokes equations and using boundary-fitted coordinates capable of handling large free-surface deformations. In particular, the numerical simulation of the flow at relatively high Reynolds numbers (Re = 500,1000, 2000 ) and relatively high Froude numbers (Fr = 1. 125, Fr = 2.0) is investigated and analyzed for the first time. Details are given regarding the space-time deformation of …

The Role Of Education In The Treatment Of Chronic Pain Patients: A Quantitative Study Of Factors That Influence The Self -Management Of Chronic Pain, Donna L. Agan Edd

Dissertations

The factors involved in the successful self-management of chronic pain are not well understood. Many issues complicate addressing these factors. Individual suffering, exhaustion of family resources, and the costs to society for medical care, lost wages, welfare and disability benefits demand increasingly more resources each year. At the micro level, patients who live the daily rigors of chronic pain want medical science to solve their malady. At the macro level, health plan administrators want their patients to successfully self-manage pain with the least medical intervention and cost, because they know a cure is not probable. In the middle, the medical …

Noneconomic Barriers To Health Care Utilization By African-Americans, Johnie M. Tarver Phd, Msn, Rn

Dissertations

Many efforts have been made to maximize the utilization of health cue system. As a result the utilization of health care system by African Americans has increased, improving the health status (Blendon, Aiken, Freeman, & Corey, 1989). While some improvements have been made, recent reports show disparities between African Americans and Caucasians in the utilization of health care systems and in their health status. Barriers have been identified among those in the lower social economic status (SES). These barriers impede health care utilization and negatively affect health status. However, studies show that among some African Americans when health care is …

Missionary Nurse Dorothy Davis Cook, 1940–1972: "Mother Of Swazi Nurses", Susan Elaine Elliott Phd

Dissertations

Dramatically absent from nursing's historical knowledge and professional recognition are the lives, roles, contributions, and legacies of Christian faith-based nurses. The purpose of this study was to investigate the ministry and service of Sister Tutor Dorothy Davis Cook, Church of the Nazarene missionary nurse in the African country of Swaziland 1940 to 1972. The multi-dimensional, multi-task expanded roles manifested in her integration of Christian missionary and nurse were explored and her legacy identified. The most significant primary source for this study was Mrs. Cook herself. She was interviewed on three occasions and has provided personal documents, journals, and photographs. Data …

Cultural Factors Influencing Japanese Female College Students' Perceptions Of Learning In A Web-Based Environment: Implications For Web-Based Instructional Designers, Theresa L. Lally Edd

Dissertations

The burst of the Japanese bubble economy in 1992 brought about many reforms in Japanese education. One example of these reforms is the recent introduction of web-based instruction into Japanese classrooms. Since traditional Japanese education has been greatly influenced by elements of Confucianism, many educators are concerned about the integration of web-based instruction with traditional Japanese teaching methods. The purposes of this study were to investigate Japanese female junior college students' attitudes and/or perceptions of learning in a web-based environment, and to measure performance between students in a traditional teacher-centered course with another group of students learning via web-based instruction. …

A Case Study Of The Effects Of The Strategic Planning Process On The Trust Level Of Administrative Staff In A K - 12 School District, Michael F. Paskewicz

Dissertations

Strategic planning is a process that has been used in the business world since the 1960s as a tool to build employee trust through the development of a shared vision and goals. Public education and other government agencies began to use the strategic planning process in the mid 1970s (Herman, 1994).

The study used data collected by a K-12 school district, two years into the strategic planning process. This study sought to determine if the trust level of administrators would be impacted by the level of participation in the strategic planning process. Trust level was defined by self rating by …

A Comparison Of Cognitive Restructuring And Systematic Desensitization Techniques For Anger Reduction With An Inmate Population, Lori Ann Diaz

Dissertations

This was a dismantling study comparing the effectiveness of the Cognitive Restructuring (CR) and the Systematic Desensitization (SD) components of Deffenbacher et al.’s (1987, 1988, 1990, 1992, 1994) treatment of anger. This study utilized an inmate population in a rural county jail. Each group completed a battery of measures (State-Trait Anger Expression Inventory [Spielberger, 1996]; Anger Symptom, and Anger Situation [Hazaleus & Deffenbacher, 1986]) at baseline (5 weeks prior to treatment), pretreatment, and posttreatment. Subjects completed an Anger Log weekly and a Satisfaction measure following treatment. The Structured Clinical Interview for DSM-IV: Patient Questionnaire was completed during the baseline period …

The Perceived Economic, Social, And Cultural Impacts Of Gaming On A Michigan Indian Tribe, Maureen Elizabeth Myers

Dissertations

The economic, social and cultural effect of tribal gaming on a Michigan Indian tribe is the focus of this study. Twelve individuals, identified as knowledgeable informants, were interviewed on how the tribal community has been impacted by the successful gaming operations and whether the nature of the gaming enterprises was an important factor.

During the interview process, the members of the community defined the changes in their lives resulting from the large amount of income that was benefiting this previously impoverished community. The participants were asked to describe, in their own words, important changes that had occurred in their personal, …

A Study Of Parental Characteristics And School Choice, Chia-Lin Hsieh

Dissertations

Parental choice of schools has been a hot political issue for more than a decade and has become a cornerstone of federal educational policy. This study investigated the relationship between parental characteristics and school choice, and whether the decision to choose schools is related to family characteristics, school characteristics, parental beliefs, and/or parental satisfaction.

This study used existing national data that were gathered by the National Center for Education Statistics (NCES) and were extracted from the School Safety and Discipline (SS&D) component o f the 1993 National Household Education Survey (NHES:93). 12,680 parents with children in 3rd through 12th grades …

A Socio-Cultural Comparative Study Of Freshmen Of Mexican Descent Attending Western Michigan University, Diane M. Ariza

Dissertations

Institutional racism, encouraged assimilation, and ignorance of Latino/a values are current barriers to the academic success and leadership development of students of Mexican descent in higher education. This study examined the lives and personal stories of 22 college freshmen of Mexican descent from Texas and Michigan and how they transitioned and adapted their first year at Western Michigan University. This study used interviews and participant observation to examine the individuals in each cohort in order to construct their life stories.

An additional purpose was to critically examine the role of the researcher who was highly involved in the recruitment and …

A Comparison Of African American Elderly Women Abstainers And Light To Moderate Consumers Of Alcohol, Treva L. Bostic

Dissertations

The purpose of this study was to examine the differences that may exist between two identified groups of older African American women: (1) light to moderate consumers of alcohol, and (2) abstainers from alcohol. Within these two groups are four subgroups of women that were studied: (1) abstainers with high social support, (2) abstainers with low social support, (3) light to moderate consumers of alcohol with high social support, and (4) light to moderate consumers of alcohol with low social support.

Through a contact-and-referral technique, a purposive sample of 97 African American women who were 65 years and over living …

Practitioners’ Perspectives On Alternatives To The Paper-Based System For Preventing Welfare Fraud, Timothy Jerome Cole

Dissertations

Federal agencies have begun to devote greater attention to detecting welfare fraud. This dissertation reviews three proposed alternatives to the current Paper- Based system for preventing welfare fraud, namely, the Paper-Based system with Fingerprint Imaging, Electronic Benefits Transfer (EBT), and EBT with Fingerprint Imaging. It also examines the policy implications likely to result from implementation of these various systems.

Practitioners were randomly selected from agency directories and mailed a survey. Information was sought on their socioeconomic background, professional affiliations, and opinions on several welfare fraud detection systems.

Statistically significant differences in their responses resulted from differences in their socioeconomic backgrounds, …

Identification And Classification Of Coryneform Bacteria Isolated From Bovine Mammary Glands, Jeffrey L. Watts

Dissertations

Coryneform bacteria are frequently isolated from bovine mastitis and these infections are associated with economic losses. Corynehacterium bovis, a lipid requiring species, has been the most frequently isolated coryneform from the milk of infected bovine mammary glands. However, the taxonomic status of this organism is uncertain. In the current study, a polyphasic approach was used to identify coryneform bacteria isolated from bovine mastitis and determ ine the phylogenetic relationships among the identified species. A total of 212 coryneform bacteria isolated from bovine mastitis was obtained from mastitis reference laboratories in the United States and Canada. Presumptive identification based upon …

A Study Of The Relationship Between Epistemic Style And Evaluation Practice, Deanna Draze

Dissertations

The purpose of this study was to examine the differences between personal epistemic styles of professional evaluators, the influence those styles have on evaluation practice, and to determine whether a typology of evaluation practice can be extrapolated from a study of epistemic style. Epistemic style was defined as how one determines what is true (or what constitutes knowledge). The intent was to provide empirical evidence of the relationship between theory and practice in the hope that it will contribute to an increased awareness of the evaluator “as an instrument’' through which data is filtered.

The Psycho-Epistemological Profile (Royce, Mos, and …

Research Into The Relationships Among Multicultural Training, Racial And Gender Identity Attitudes And Multicultural Competencies For Counselors, Debbie Koeltzow

Dissertations

This study explored the relationships among multicultural training, racial identity attitudes, gender identity attitudes, and multicultural competencies in counseling trainees. Two principal research hypotheses were generated. The first generally stated hypothesis was that racial identity and gender identity represent parallel processes for those whose racial and gender identities share a cultural status (minority-minority or majority-majority) and are independent processes for those whose identities do not share a cultural status (minority-majority). The second generally stated hypothesis was that multicultural training predicts racial identity attitudes, gender identity attitudes, and multicultural competencies, and that both racial and gender identity attitudes predict multicultural competencies. …

The Experience Of Interpersonal Forgiveness: An Empirical-Phenomenological Investigation, Halimatun Halaliah Mokhtar

Dissertations

The purpose of this qualitative study was to investigate the lived experience of interpersonal forgiveness of individuals (known as co-researchers) by employing the empirical-phenomenological method. This study aimed at identifying, understanding, and describing the general psychological meaning (Tesch, 1990) or the essences/structures (Moustakas, 1994) of the experience of the phenomenon through the protocols of these individuals. It was also a goal of this study to develop a psychological theory of interpersonal forgiveness.

A two-interview structure was conducted with eight individuals (three males and five females) who had forgiven their significant offending others. The first interview focused on the meaning and …

Adolescent Perceptions Of Parent-Adolescent Communication And Adolescent Pregnancy, Susan L. Tohm Lloyd Phd, Ms, Rn

Dissertations

Identification of adolescent perceptions of parent-adolescent communication, a significant factor in family functioning and connectedness, is important if effective interventions are to be provided by health care professionals related to decreasing the number as well as the adverse effects of adolescent pregnancy in the United States. The purpose of this descriptive, non-experimental, triangulated study was to examine the relationship between the perceived quality and effectiveness of parent-adolescent communication and pregnancy from the perspective of pregnant adolescent women in the Banning/Beaumont area of southern California. The theoretical framework for this study was based on adolescent and family developmental theories, family communication …

Social Factors Related To Recovery After Hip Fracture, Debra Lindstrom Hazel

Dissertations

Objectives. The relationship between social variables and performance of instrumental activities of daily living (IADL) was examined in participants three to nine months after they experienced a hip fracture. All participants were over the age of 60 and living in their own homes before and after their hip fractures.

Method. This study employed both qualitative and quantitative methods. There were 19 participants in the quantitative portion of the study that compared three subjectively rated questionnaires with an objectively rated IADL scale. The independent variable, subjective scales were: (1) Antonovsky’s “Orientation to Life” Scale, which measures the sense of coherence, (2) …

A Comparison Of Learning In Adult Accelerated And Non-Accelerated Courses, Donald J. Green

Dissertations

The focus of this study w as a comparison of learning acquired by adult students in two accelerated sections and one nonaccelerated section o f a college-level course in diversity held at a private school in the Midwestern United States. The course was identical in title, instructor, course materials, examinations, and course outcomes. To measure other potential differences in the experience of the three sections, student participants were asked to complete a precourse survey, postcourse survey, and postcourse classroom environmental assessment instrument called the College and University Classroom Environment Instrument (CUCEI; Treagust & Fraser, 1986).

Upon completion of the course, …

African-American And White Female Homicide Offenders: Women Who Kill Intimate Partners Versus Non-Intimate Partners In Chicago Between 1980-1995, Shauntey James

Dissertations

The research that examines female homicide offenders goes little further than investigating whether or not offenders were previously victimized by those whom they kill. This research project is designed to contribute to this extant body of literature and theory in two ways. The first is to add and provide a comprehensive picture of African-American and white female homicide offenders in intimate versus non-intimate relationships in homicidal events. The second manner of contribution lies in the testing of a creative and integrative theoretical model. This model addresses race, underclass context, alcohol use, social disorganization and prior arrest record of female homicide …

Molecular And Biological Characterization Of A Tanapox Virus Tnf-Binding Protein And The Complete Nucleotide Sequence Of The Psti-J Genomic Fragment, Mini Paulose-Murphy

Dissertations

Most of the poxvirus encoded virulence factors have been identified as proteins that are secreted from infected host cells. Some of these secretory proteins impede host immune defenses. We have previously demonstrated that tanapox virus (TPV) infected cells secrete a 38 kDa glycopeptide that binds to human (h) interferon-γ, h-interleukin (IL)-2, and hIL-5. We now show an additional activity in the supernatant from TPV infected cells that down-regulates the expression of tumor necrosis factor-a (TNF-α) induced cell adhesion molecule gene expression. This activity was not detected in mock infected cells. Enzyme linked immunosorbent assays (ELISA) on primary human endothelial cells, …

Optimum Design And Machining Parameters Of A Permanent Magnet Brushless Dc Linear Motor As A Cnc Feed Drive, William Tereshkovich

Dissertations

A new heuristic has been developed to determine optimal operating parameters applied to a permanent magnet brushless DC linear motor (PMBDCLM) as a CNC feed drive. An FEA model has been developed utilizing an -electromagnetic postprocessor to provide performance output of a PMBDCLM and DC servomotor. Based on the developed FEA models, velocity results have been utilized to provide feedrate levels for design of experiments (DOE). DOE has been conducted to provide force, tolerance, and surface finish data necessary for the performance comparison of a DC servo motor/ballscrew equipped CNC vertical milling machine and a PMBDCLM equipped CNC vertical milling …

A Mathematical Model Of Wheelchair Racing, Susan J. Schenk

Dissertations

Wheelchair racing strokes are very complicated movements, which involve a coupling between the athlete and his or her racing chair. Each body segment, as well as the wheel, follows a distinct trajectory as the motion is performed. Understanding the kinematics and kinetics of various stroke techniques would provide the athletes and their coaches with information, which could help guide the racers toward improved performances.

In this thesis, a mathematical model is developed, which is capable of providing such valuable kinematic and kinetic information. This two-dimensional model represents the body segments as a coupled pendulum system of point masses and the …

Experiment, Thermodynamic Properties And Modeling On Combustion Of Methyl Tert-Butyl Ether : Isobutane And Isobutene And Thermodynamic Properties Of Chloro Alkanes And Alkenes, Chiung-Ju Chen

Dissertations

The reaction systems: methyl tert-butyl ether (MTBE) unimolecular decomposition, MTBE radicals + O₂, tert-butyl radical +O₂, isobutene + HOO. (HO₂),isobutene + OH, sobutene-OH adducts + O₂, and allylic isobutenyl radical + O₂, are important systems in the understanding the oxidation chemistry of MTBE, tertiary butyl radical (C3C.), and sobutene, are analyzed. Thermochemical parameters are determined by ah initio Møller-Plesset (MP2(full)/6-31g(d)), complete basis set model chemistry (CBS-4 and CBS-q with MP2(full)/6-31g(d) and B3LYP/6-31g(d) optimized geometries), density functional (B3LYP/631g(d)), semi-empirical MOPAC (PM3) molecular orbital calculations, and by group additivity estimation. Thermochemical …