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Development Of Membrane Extraction Systems For Measuring Trace Level Organic Compounds In Water, Xuemei Guo

Dissertations

The presence of volatile organic compounds (VOCs) in ground and surface water resources poses a threat to public health. The measurement of these trace level contaminants in water is of significant importance. Conventional methods for analysis of trace volatile organic compounds in water include purge and trap, head space analysis, and solid phase microextraction (SPME). While these are excellent laboratory techniques, none of them can be used for continuous, on-line monitoring of water streams. Membrane separation of organic compounds from water provides an exciting possibility for on-line extraction and analysis. In previous investigations, water continuously flowed on the feed side …

Long Term Risks Associated With Brownfield Containments, Shailesh Shirish Chirputkar

Dissertations

The sites at which the development is hindered by real or perceived contamination are called as Brownfield sites. It is a common trend in industry to develop these types of sites with surface and peripheral containments. It might prove unwise to develop the sites in this manner from a long term perspective without considering the associated risk. Because of this, a model has been proposed for long term risk assessments of brownfield containments.

Objectives of this study were to develop a contaminant transport model for flow of contaminants towards the surface and peripheral containments inside the site, a model for …

Developing Techniques For Enhancing Comprehensibility Of Controlled Medical Terminologies, Huanying Gu

Dissertations

A controlled medical terminology (CMT) is a collection of concepts (or terms) that are used in the medical domain. Typically, a CMT also contains attributes of those concepts and/or relationships between those concepts. Electronic CMTs are extremely useful and important for communication between and integration of independent information systems in healthcare, because data in this area is highly fragmented. A single query in this area might involve several databases, e.g., a clinical database, a pharmacy database, a radiology database, and a lab test database.

Unfortunately, the extensive sizes of CMTs, often containing tens of thousands of concepts and hundreds of …

On-Line State And Parameter Estimation In Nonlinear Systems, David A. Haessig

Dissertations

On-line, simultaneous state and parameters estimation in deterministic, nonlinear dynamic systems of known structure is the problem considered. Available methods are few and fall short of user needs in that they are difficult to apply, their applicability is restricted to limited classes of systems, and for some, conditions guaranteeing their convergence don't exist.

The new methods developed herein are placed into two categories: those that involve the use of Riccati equations, and those that do not. Two of the new methods do not use Riccati equations, and each is considered to be a different extension of Friedland' s parameter observer …

Modeling Controlled Vocabularies Using Oodbs And Multilevel Area Diagrams, Li-Min Liu

Dissertations

A Controlled Vocabulary (CV) is a software system of domain knowledge that consolidates and unifies the terminology of a large application domain. With a common, centralized CV, costly and time-consuming translations can be eliminated between pairs of organizations and pairs of software systems. Unfortunately, the more knowledge we put into a CV, the harder it is to understand and maintain it. In this dissertation, a comprehensive theoretical methodology for modeling CVs using Object-Oriented Database (OODB) technology is presented. We present two methods for representing a semantic network CV as an equivalent OODB, which we call an Object-Oriented Vocabulary Repository (OOVR). …

Crossing The Line: Experiences Of The Formerly Homeless Living Past Homelessness, Susan Marie Bennett Dnsc, Msn, Fnp, Rn, Cs

Dissertations

This grounded theory study explored the experiences of formerly homeless individuals and families who have moved from homelessness into stable housing. This was an ethnographic study and involved the researcher staying in an east coast shelter where some of the formerly homeless participants had become staff members and reside. Data analysis was informed by dimensional analysis. Moving out of homelessness was the studies perspective. Findings of the study revealed the following dimensions that related the formerly homeless's experiences: (a)reacting to circumstances, or how they became homeless; (b)surviving as homeless, or how they lived while homeless; (c)crossing the fine, or what …

The Relationship Of Principal Leadership Styles And School-Site Conditions To Stress Levels Of Elementary School Teachers, Mark Nicholas Remy Edd

Dissertations

The purpose of this study was to determine if principal leadership styles and school-site conditions were associated with elementary teachers' stress levels. The study focused on the relationship between the independent variables of principal leadership styles and school-site conditions and the dependent variables of teacher stress levels. A survey composed of the Leader Behavior Description Questionnaire (LBDQ), Teacher Stress Inventory (TSI) and a demographic information sheet was administered to 585 teachers from 28 elementary schools. Tins study was conducted in the San Diego Unified School District during the 1998–1999 school year. The LBDQ measured two dimensions of leadership: Consideration and …

Determining Cutoff Scores For The Mmpi-2 Substance Abuse Scales For An Inmate Population, Barbara A. Johnston

Dissertations

The current research project examined the psychometric properties of the substance abuse scales of the Minnesota Multiphasic Personality Inventory, Second Edition (MMPI-2) with an inmate population. The scales of interest included the MacAndrews Alcoholism Scale Revised (MAC-R), the Addiction Potential Scale (APS) and the Addiction Acknowledgement Scale (AAS).

A total of 80 subjects were administered the MMPI-2 which resulted in 73 valid profiles. Of the valid profiles, 54 were chemically dependent and 19 were nonchemically dependent inmates. There were no differences between groups in regard to sociodemographic variables.

The data analyses indicated that the AAS and APS are efficient and …

The Effects Of A Combination Of Feedback, Goals, And Consequences On The Performance Of Four Small Businesses, Timothy V. Nolan

Dissertations

Performance measurement approaches such as the Balanced Scorecard (BSC) offer a format for attending to a few performance metrics rather than several different performance indicators. While the BSC approach offers a nice format for tracking performance, it does not provide a conceptual framework for improving performance. That framework can be found in Behavioral Systems Analysis. The Total Performance System emphasizes the importance of internal and external feedback in improving performance. Several studies have investigated feedback interventions in organizational settings. The intervention found to be most effective is a combination of feedback, goals, and consequences. The purpose of the current study …

Educational Affirmations For Healthy Self-Esteem- An Exploratory Factor Analysis, Kaye L. Centers

Dissertations

This investigation explored the underlying constructs of Clarke’s Educational Affirmations, a set of 54 statements designed to support the development of healthy self-esteem and the accomplishment of the developmental tasks of the psychosocial stages theorized by Erikson. The Preliminary Educational Affirmations Scale (PEAS), a transformed version of the Educational Affirmations, was devised and administered to 520 community college students. A principal components factor analysis of the results indicates the presence of two main factors that accounted for 28% of the total variance in the data, and offers partial support for the hypothesized factors of worthiness (Being) and competence (Doing).

The …

An Analysis Of Parental And Peer Attachment And Its Determinant Factors: A Test Of Attachment Theory On Malaysian Students At American Universities, Noriah Mohd. Ishak

Dissertations

This study examined the quality of parental and peer attachments among Malaysian students studying at universities in the midwestern region of the United States. The study was conducted in two phases. Two hundred and two students (106 male, 96 female) participated in the first phase of the study, and 8 students (4 male, and 4 female) participated in the second phase of the study. Phase One employed a cross-sectional quantitative design using a self-administered questionnaire [the Inventory of Parental and Peer Attachment (IPPA) developed by Armsden and Greenberg (1987)] and revised by the researcher. This instrument has 53 items that …

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 …

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 …

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 …

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? …

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 …

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 …

The Relationship Between Religious Beliefs, Moral Development, Self-Control, Peer Pressure, Self-Esteem, And Premarital Sex, Jacynth A. Fennell

Dissertations

Problem. The purpose of this study was to ascertain if there is any relationship between religious beliefs, moral development, self-control, peer pressure, self-esteem, and premarital sex, providing for a comprehensive framework for understanding this phenomenon.

Method. Subjects were 148 undergraduates attending three schools in different geographic regions within the United States. Subjects were primarily between 18 and 25 years old. A survey was completed by 148 students. Data-were analyzed using Analysis of Variance and Independent-Samples t test.

Results. Of the 148 students who participated in the study, 38% were Black, Hispanic, 38% were White, non-Hispanic, 10% were …

The Relationship Between Afrocentric Worldview And Marital Satisfaction In African-American Couples, Ganz E. Ferrance

Dissertations

Problem. It has been argued that many of the theories attempting to explain African-American culture derive from a Eurocentric framework, and thus paint a negative and pathological picture of the African-American family and community. What is needed is research examining African-American family life which holds Afrocentric culture and beliefs as its foundation. Consequently, this study is an attempt to investigate the relationship between Afrocentric cultural consciousness (Afrocentric worldview) and marital satisfaction of spouses of African descent.

Method. This study used a correlational and ex post facto research design involving surveys to assess the relationship between the dependent variable …

Characteristics Of Hispanic Seventh-Day Adventist Adolescents Who Attempted Suicide, Juanita E. Trivino

Dissertations

Problem. Hispanic adolescent suicide attempts appear to have been understudied, while suicidal behavior continues to be a concern as a youthful phenomenon. The present study sought to contribute to the understanding of Hispanic youth suicide and its association with acculturation, family, religion, and gender in a sample of Hispanic Seventh-day Adventist adolescents.

Method. The data used for this study came from the Avance survey, the largest denominational survey conducted among Hispanic Seventh-day Adventists in the U.S. (1993-1994). The sample consisted of 869 adolescents, comprised of 380 males and 489 females. Chi-square, t test for means of two independent samples, …

The Reflective Process In Nursing Clinicals Using Journaling And Dialogue, Rita Van Horn

Dissertations

Method. Two case studies describe the experiences of (1) 17 students who worked individually in the hospital clinical setting and who answered specific questions about problem solving in a written journal and (2) 20 students who were paired in the clinical setting and who answered the same questions together in a journal shared by the pair. In both case studies the experience was 9 weeks. The written journal questions were designed around a problem-solving process and thoughts and feelings about the clinical experience. A rubric adapted from Boud, Koegh, and Walker’s (1985) reflective model was used to analyze the journal …

Technology Partnership Curriculum Initiative: A Descriptive Case Study Of Its History, Development, And Implementation, Ingrid Wright-Jones

Dissertations

Problem

Curricular reform has a pathetic history. Curriculum documents, some of the major tools of reformers, have had a minor effect on transforming education because the power of pedagogy has been ignored (Cuban, 1993). Teachers in the Seventh-day Adventist (SDA) system voiced similar concerns about curriculum documents. Additionally, they felt that their 2-4-day in-service training did not adequately prepare them to implement curricular changes. This initiative, aimed at restructuring both the content and process of teaching, was to be implemented in a distance-learning pilot project in eight one-teacher schools.

Purpose

The purpose of this study was to: (1) define the …