Digital Commons Network^™

Periodicity And Disorder, Simeon D. Simeonov

Dissertations

We have studied four examples of periodicity and disorder in nature and the phenomena associated with them.

In the first chapter of the dissertation we present an introduction to this work.

In the second chapter, the photonic band structures of two types of zinc blend structures are computed using the plane wave expansion method. Both structures are formed from an array of dielectric spheres in a vacuum background. In a first type zinc blend structure the spheres have the same size but different dielectric constants. In a second type of structure we keep the dielectric contrast of the spheres the …

The Relationship Between Principals' Leadership Characteristics And Characteristics Of Public Middle Schools, Linda S. Schneider-Rediske

Dissertations

Principals’ perceptions of the relationship between middle school leadership characteristics and the relevance and use of middle school characteristics were examined in this study. A systematic random sampling procedure was used to select principals from public middle schools in the State of Michigan. A survey instrument was developed to measure the variables. These variables were determined based on a review of the literature. The reliability of the instrument was obtained using the Cronbach’s alpha coefficients. Spearman rank-ordered correlations were used to determine the strength and direction of the relationships of each hypothesis.

The findings from this study suggest that there …

Factors Related To Stage At Diagnosis In African-American And Caucasian Women Diagnosed With Breast Cancer In The Military Health System, Sandra C. Garmon Bibb Dnsc, Msn, Rn

Dissertations

The focus of this descriptive-comparative study was to investigate the relationships between potential access (race, age, socioeconomic status (SES), and the means of discovery of breast cancer), realized access (the length of time between discovery of breast abnormality and diagnosis of breast cancer, and the length of time between diagnosis and initiation of breast cancer treatment), and stage at diagnosis of breast cancer, in African American and Caucasian women, receiving care within an equal economic access health care system. The research questions were answered through secondary analysis, using data obtained from the tumor registry records of 62 African American and …

Story As A Means To Distributed Cognition In Dispute Mediation, Mary Lindsay Edd

Dissertations

In spite of a long history and wide-spread usage, dispute mediation has developed largely in the absence of theories to corroborate its practices. Mediators are taught techniques during their training to help disputants communicate; however, the kinds, patterns and evocation of disputant discourse that may further advance the mediation process have received little attention. In particular, stories may have been overlooked as a means in the creation of mutual understanding and in the promotion of relationship. At the same time, some mediators disavow storytelling as an acceptable type of discourse as they believe that the focus of the activity is …

Individual Differences In Attributional Style: The Mediating Influence Of Self-Efficacy, Self-Esteem, And Sex Role Identity, Angela J. Hirschy

Dissertations

Previous research into achievement attributions failed to demonstrate consistent main effects for sex or interaction effects between sex and situational or task variables. The ambiguity of these findings suggests that intervening variables other than sex may be influencing differences in attributions. Based on evidence derived from the theoretical and research literature related to psychological well-being and the reformulated learned helplessness model of depression, self-efficacy, selfesteem, and sex role identity have the potential to influence attributions made in different types of success and failure situations. The purpose of this study was to expand on achievement attribution research by investigating the relationship …

Lifting The Veil Off Widowhood: Portraits Of Transformation, Louise A. Stanger Edd

Dissertations

This qualitative research study has explored the lives of 13 women who were widowed before the age of 55, who are professionals, educators, businesswomen, and community activists, to learn how their lives have been transformed since the death of their spouse. For this study, the death of a spouse was seen as a transforming event in the life of a married woman. The nature of this transformation varied with each respondent. Portraiture was the primary biographical methodology used. Purposive sampling provided the opportunity to interview women from diverse backgrounds. Five global, open-ended interview questions were used and demographic data were …

Diversity, Collaboration, Reflective Practice, And Technology In Professional Education Programs: Strategic Choices For Higher Education, Caren L. Sax Edd

Dissertations

Today's postsecondary students are entering American institutions of higher education (IHEs) with different experiences, expectations, and learning needs than students of previous generations. Calls for more diverse campuses, advanced technology, and lifelong learning are maintaining pressure on IHEs to adjust to new demands for a more encompassing vision as traditional approaches are no longer adequate. The challenges are tremendous; the responses must be extensive and reflective if higher education is to achieve its goals of preparing students for productive and meaningful lives. This study investigated student experiences in a yearlong professional education program that was focused by four strategic choices …

A Novel Readout Method For Focal Plane Array Imaging In The Presence Of Large Dark Current, Changqing Qiu

Dissertations

This research was an investigation of a novel readout method for focal plane array (FPA) optical imaging, especially for very sensitive detectors with large dark current. The readout method is based on periodically blocking the optical input enabling the removal of the dark current integration from the output. The research demonstrated that it is feasible to modulate the optical input with the designed readout circuit and thus achieve longer signal integration time to enhance the signal-to-noise ratio.

Study of a proposed circuit model showed that in theory the correlated readout method could increase the output voltage swing and reduce the …

Domain Architecture A Design Framework For System Development And Integration, Vassilka D. Kirova

Dissertations

The ever growing complexity of software systems has revealed many short-comings in existing software engineering practices and has raised interest in architecture-driven software development. A system's architecture provides a model of the system that suppresses implementation detail, allowing the architects to concentrate on the analysis and decisions that are most critical to structuring the system to satisfy its requirements. Recently, interests of researchers and practi-tioners have shifted from individual system architectures to architectures for classes of software systems which provide more general, reusable solutions to the issues of overall system organization, interoperability, and allocation of services to system components. These …

Investigation Of Thermal Contact Resistance At A Plastic-Metal Interface In Injection Molding, Lakshminarayanan Sridhar

Dissertations

Thermal contact resistance (TCR) at the plastic-metal interface is one of the parameters required for the simulation of plastic processing techniques such as injection molding. However, the available data is both unreliable and insufficient due to the difficulties involved in measuring this parameter. The effects of thermal contact resistance on the heat transfer in plastics processing with particular reference to injection molding of thermoplastics is investigated using combined experimental measurement techniques, parametric studies and numerical analysis.

TCR under steady state conditions has been determined experimentally at typical thermoplastic-mold metal interfaces for an amorphous and a semi-crystalline polymer using a one-dimensional …

Parallelization For Image Processing Algorithms Based Chain And Mid-Crack Codes, Wai-Tak Wong

Dissertations

Freeman chain code is a widely-used description for a contour image. Another mid-crack code algorithm was proposed as a more precise method for image representation. We have developed a coding algorithm which is suitable to generate either chain code description or mid-crack code description by switching between two different tables. Since there is a strong urge to use parallel processing in image related problems, a parallel coding algorithm is implemented. This algorithm is developed on a pyramid architecture and a N cube architecture. Using link-list data structure and neighbor identification, the algorithm gains efficiency because no sorting or neighborhood pairing …

A Methodology For Component-Based System Integration, Yongming Tang

Dissertations

Component-based software based on software architectures is emerging to be the next generation software development paradigm. The paradigm shifts the development focus from lines-of-codes to coarser-grained components and the interconnections among them. It consists of system architecture design, architecture description, component search and system integration from components to generate a software system.

However, one of the bottlenecks in this paradigm is the integration of the individual components into the overall system. In this dissertation a methodology for component-based system integration is proposed. It is based on an architectural aggregation view, a component model, flowgraphs and cyclomatic complexity. We introduce this …

Oxidation Of Dimethyl-Ether And Ethylene In The Atmosphere And Combustion Environment And Thermodynamic Studies On Hydrofluorocarbons Using Ab Initio Calculation Methods, Takahiro Yamada

Dissertations

Reaction pathways and kinetics are analyzed on CH₃OC·H₂ unimolecular decay and on the complete CH₃OC·H₂ + O₂ reaction system using thermodynamic properties (ΔH_f°₂₉₈, S°₂₉₈, and C(T) 300≤T/K≤1500) derived by two ab initio calculation methods, CBS-q and G2. These are used to determine thermodynamic properties of reactants, intermediate radicals and transition state (TS) compounds. Quantum Rice-Ramsperger-Kassel (QRRK) analysis is used to calculate energy dependent rate constants, k(E), and master equation is used to account for collisional stabilization. Comparison of calculated fall-off with experiment indicates that the CBS-q and …

A Theoretical Study Of Bubble Motion In Surfactant Solutions, Yanping Wang

Dissertations

We examine the effect of surfactants on a spherical gas bubble rising steadily in an infinite fluid at low and order one Reynolds number with order one and larger Peclet numbers. Our mathematical model is based on the Navier-Stokes equations coupled with a convection-diffusion equation together with appropriate interfacial conditions. The nonlinearity of the equations and boundary conditions, and the coupling between hydrodynamics and surfactant transport make the problem very challenging.

When a bubble rises in a fluid containing surface-active agents, surfactant adsorbs onto the bubble surface at the leading edge, convects to the trailing edge by the surface flow …

Marital Satisfaction Factors For Korean-Americans, Soonja Choi Lee

Dissertations

Problem. Many marital satisfaction studies have focused on many sub-groups: Caucasians, Blacks, and many ethnic groups such as Japanese, German, Polish, Indian, Chinese-American, Swedish, Mexican-American, Nigerian, and Koreans in Korea. No study was found that has investigated marital satisfaction factors for Korean-American couples.

Method. This study evaluated marital satisfaction factors that were important to Korean Americans. The Korean-American population for this study was reached through the Korean-American church organizations in America by random selection of churches.

A total of 558 surveys was usable for analyses. Of the 558 subjects, approximately 49% were husbands and 51% were wives. Three hundred …

An Understanding Of Selected Familial Dynamics As They Relate To The Prevention Of Substance Use Among Youth From St. Martin, Vincent A. David

Dissertations

Problem. Various studies examined the relationship between youth, drug use, and the role that families play in influencing such use. Thus, it is evident that youth use drugs, and thereasons for their drug use vary widely. However, there have not been widespread research done on the youth who do not use drugs, particularly from a family perspective. Also, no research study has been known to be conducted on St. Martin of such nature.

Purpose. This study sought to gain an understanding on how selected familial dynamics functioned within three families in deterring their youth from becoming involved in …

A Descriptive Case Study Of Teaching Teams At Lakeside Middle School, Dion Harrigan

Dissertations

Problem. Much of current educational reform calls for teacher collaboration and teaming. These practices, however, are lacking in most middle schools. How do teams develop? Is there a prescribed pattern they must follow? What contributes to team growth? What are teachers' experiences as they collaborate? The answers to these questions are needed to facilitate effective teaming in schools.

Purpose. The purpose of this dissertation was to examine and describe the experiences of five middle school teams. I focus on the perceptions of the teams in terms of their development and relations with each other. The study describes how teachers' …

Screening For Eating Disorders Utilizing The Minnesota Multiphasic Personality Inventory, Roseann M. Woodka

Dissertations

Problem

Eating disorders, in the form of anorexia nervosa and bulimia nervosa, have been recognized as significant mental-health issues for the last three decades, and the incidence is rising as we approach the new millennium. Currently, many women who come into a mental-health setting due to depression, anxiety, low self-esteem, relationship issues, sexual issues, etc., are also struggling with eating-disordered behaviors, thoughts, and feelings. These behaviors, thoughts, and feelings may remain well hidden from the counselor throughout the course of therapy or until they become severe and more difficult to treat. Because eating disorders are very complex involving psychological, physical, …

Object Relations And Identity Disturbances In Bulimic Women, Kathy Appledorn

Dissertations

Problem. Although diagnostic criteria of bulimia center on weight- and food-related issues, eating disorders may be viewed as a response to deficits in self-regulatory functions. The purpose of this study was to investigate the relationship between the severity of bulimia, object relations, and identity. This study tested the hypotheses that women with a more severe eating pathology have high scores on object-relations disturbance as well as identity disturbance. It was postulated that women who have been assessed as having a more cohesive ego might respond to cognitive behavioral therapy while those who are assessed as having less intact ego …

Effective Middle School Teachers : Becoming "Real", Rhoda C. Sommers

Dissertations

Problem. This study looks at four effective middle school teachers' stories in order to understand the experiences and beliefs which impact their choice to use developmentally responsive classroom practices. There is general agreement in the literature concerning characteristics of effective middle school teachers, but little has been done to understand what influences these teachers to teach the way they do.

Method. A qualitative case study design was used for this study. Two male and two female middle school teachers were observed and interviewed during the course of 1 school year. Each teacher's life experiences, classroom practices, and beliefs are …

Pastoral Effectiveness : A Study Of Differences Among Comparison Groups Of Seventh-Day Adventist Clergy, Peter Swanson

Dissertations

Problem. Methods of comparison are required to evaluate pastoral effectiveness. This study was an examination of statistically significant differences among contrasted groups of clergy to identify characteristics and performance patterns associated with productivity and effectiveness.

Method. Pastors from Anglo Seventh-day Adventist churches in North America and Canada were assigned to five groups that were evaluated using the Adventist Pastor Inventory, Sixteen Personality Factor Questionnaire, Pastoral Tasks Survey, and Pastoral Tasks Questionnaire. Ministers who baptized 50 or more persons within 3 years were compared with those who baptized 10 or fewer in the same period and clergy rated most effective …

A Study Of K-12 Teachers In Small School Districts : Their Levels Of Stress, The Source Of Stress, And The Effect Of Initiating Coping Strategies, Roberta J. Farwell

Dissertations

Problem. This study explored the relationship between K-12 regular education teachers in school districts with fewer than 2,500 students and their levels of stress as it related to the sources of stress, demographic variables, and initiation of coping strategies.

Method. The subjects of this study were 329 K-12 teachers. They completed the Maslach Burnout Inventory, Education form, a demographic/coping mechanism form, and Stressor Source Check List.

Results. (1) Classroom, building, and community issues affected teachers' attitudes toward their profession:Stress levels, as measured by the MBI, were reflected in their identification of sources of stress in the work …

Giving Up And Giving In: Young Adolescents' Dilemmas When Caring For A Grandparent With Alzheimer's Disease, Diane Lee Beach Edd

Dissertations

Caregivers of persons with Alzheimer's disease have been studied extensively; the vast majority of caregiver research has focused on spouses and adult children, negating the impact caregiving has on younger family members. Importantly, 75% of caregivers are female; 31% of these women have children at home under the age of 12 and 23% live with a child aged 12–17. As such, adolescents will be increasingly involved in the care of Alzheimer's victims. This study sought to examine the experiences of these individuals. Specifically, what is it like for an adolescent to provide care for a grandparent afflicted with Alzheimer's disease? …

The Community College Coach: Leadership Practices And Athlete Satisfaction, Jodi P. Coffman Edd

Dissertations

Community college coaches and athletes completed the Leadership Practices Inventory (LPI), to assess the leadership practices of coaches of various sports. Soccer coaches and their athletes were also surveyed to assess the impact of the congruence of leadership practices ratings upon athlete satisfaction. Two samples were taken from Spring and Fall, 1998 sports: (a) 225 full-time head coaches of team sports in which there was a male and female equivalent in California's community colleges, and (b) 280 men's and women's soccer athletes. The descriptive statistics conducted indicated that there were more similarities than differences between the male and female coaches, …

Games Leaders Play: Collaborative Leadership Development Through Simulations In Knowledge-Based Organizations, John Paul Dentico Edd

Dissertations

New concepts of leadership and new methods of imparting these concepts to individuals are needed in the knowledge society of today. This study presented a practitioners model of collaborative leadership and a new experiential simulation methodology called LeadSimrn as a way in which organization members could learn this new model of leadership and develop confidence in its ability to engage complex issues. Using the LeadSimm simulation method, two scenarios were developed and two simulations were played. The San Jose Police Department played one simulation and the Economic Development Institute of the World Bank played the other. The researcher conducted eighteen …

A Professional Competency Survey Of Organizational Consultants In San Diego County, Angie Mays Edd

Dissertations

The purpose of this study was to gain a clearer understanding of the rapidly growing field of Organizational Consulting. Specifically, this research focuses on developing profiles of various types of organizational consultants in San Diego County. The types of profiles considered included: Executive Coaches, Feedback Specialists, Motivational Speakers, Trainers, Educators, and Consultants. The research topics examined included: background and professional preparation of consultants, professional resources utilized, interventions most commonly used, and level of job satisfaction. A descriptive survey was employed to aid in the investigation. The questionnaire consisted of questions revised from Waller's (1988) national survey of training consultants, and …

Gustavo Gutierrez's Understanding Of The Kingdom Of God In The Light Of The Second Vatican Council, Victor Figueroa-Villarreal

Dissertations

The proclamation of the Kingdom of God has been reformulated in every age and interpreted accordingly with regard to time and place. Traditionally within Roman Catholicism the Kingdom of God was identified with the church. This view produced a triumphalist attitude within the Roman Catholic Church. The Second Vatican Council brought a new attitude of openness toward the modern world, and with it the council opened the door for Roman Catholic liberation theologians to look for new ways to find what they regarded as the just solutions to the problems of Latin America.

The purpose of this research is to …

Demon Possession And Exorcism In The Context Of Divine Providence In Luke-Acts, Charles Badu Yeboah

Dissertations

The dissertation examines the nature and function of demon possession and exorcism within the context of divine providence in Luke-Acts. Chap. 1, after defining the subject and purpose of the study, lays out the dissertation's methodology, constraints and relevance. Chap. 2 provides a survey of the state of scholarship on demonology in the New Testament. Chap. 3 discusses the backgrounds against which Luke's account of demonic possession and exorcism have been understood by prior scholarship. Chap.4 and 5 are devoted to the exegetical analysis of the demonic stories in Luke-Acts. Chap 4 examines stories of Jesus' encounter with the demoniacs …

Integration Of Faith And Learning In Christian Higher Education : Professional Development Of Teachers And Classroom Implementation, Constance Chibuzo Nwosu

Dissertations

Problem. Few studies have focused on effective professional development programs that enhance faith-learning implementation in the Christian higher education classroom, and little has been documented about what integration of faith and learning actually looks or sounds like in Christian higher education classrooms.

Purpose. This study had four purposes:

1. To describe the training processes used for preparing teachers in Christian higher education for implementing EFL in the classroom.
2. To compare these methodologies with Jesus’ training methodologies and research-based professional development programs.
3. To understand how teachers in Christian higher education classrooms defined IFL.
4. To identify and document some exemplary practices of faith …

Critical Thinking In Associate Degree Nursing Education, Nancy Tucker

Dissertations

Problem. This study sought to investigate the level of critical thinking (CT) of the associate degree in nursing (ADN) students and the relationship of CT and clinical judgment (CJ) with selected pre-admission and exit variables.

Method. A convenience sample of 112 ADN students (79 generic, 33 non-traditional) at a small, private liberal arts college on the West Coast participated in this exploratory study. The California Critical Thinking Skills Test (CCTST) was used to measure the level of CT, and CJ was measured using the Clinical Decision Making in Nursing Scale (CDMNS). Differences between the generic and non-traditional groups were explored …