Digital Commons Network^™

A Computer/Tutorial System Compared With A Workbook/Tutorial System For Presenting Instructional Material To At-Risk Elementary School Students, Vincent O. Hodge

Dissertations

Two different ways of presenting instructional material and reacting to students’ responses were compared. One, taking advantage of several features of multimedia instruction involved a desktop computer and various computer-presented consequences of correct and incorrect responses (largely chosen by the student). The other consisted in presenting the same instructional materials (the SRA primary curriculum) in a workbook form with tutors' comments and praise as the main form of response consequence. The two methods were compared with respect to various measures of student and system performance, including student accuracy (percent correct responses), types of errors, amount of correct response repetition (over-responding), …

Laterality Of The Perception Of Computer Presented Written Sexual Words By Right-Handed Males And Females, Randall W. Stewart

Dissertations

The right hemisphere of males has been shown to possess a greater capacity for accurate perception of emotional non-verbal material (pictures) than the left hemisphere. The same is true for females, but with a smaller difference between the two hemispheres. Some previous research has partially confirmed these relationships using tachistoscopic presentation of emotional words. The present study, using briefly exposed computerpresented sexual words, compared perception accuracy with respect to a sexuality rating of clearly sexual and clearly non-sexual words, in the right versus the left visual field, and with males versus females. As with previous research using verbal stimuli, the …

The Relationship Between Organizational Culture And The Practice Of Program Evaluation In Human Service Organizations, Lorraine Marais

Dissertations

There are many obstacles for human service organizations in evaluating programs. Some of these barriers are the difficulty in defining human behavior and the change that needs to be evaluated, human service programs that take a long time to show results, agency capacity to do evaluation, and cost (Young, Hollister, Hodgkinson, & Associates, 1993). Another subtle yet powerful influence on the practice of evaluation in nonprofit organizations may be organizational culture (Schein, 1990). If an organization is going to employ self-evaluation, an organizational culture may be needed that will support such efforts. This study was designed to assess the relationship …

The Relationship Of Self-Esteem, Learned Resourcefulness And Social Support To Health-Related Quality Of Life In Long-Term Cancer Survivors, Leli W. Pedro Dnsc, Ms, Rnc, Ocn

Dissertations

Increased survival and advances in oncology research demand that health professionals attend to the gap in knowledge regarding health-related quality of life (HRQL) variables associated with the unique sequelae of cancer in the long-term (LT) cancer survivor. Research in this area may direct the development of effective interventions to increase the HRQL of LT cancer survivors. The study's purpose was to describe the relationships between self-esteem, learned resourcefulness, and social support to HRQL as well as their predictive value to HRQL for LT cancer survivors. A quantitative, descriptive, correlational, and noninterventional design was used to describe the relationship of self-esteem, …

A Comparison Of Reported Teacher Selection Practices Of Elementary Principals In Michigan To Recommended Selection Methods, John E. Jarpe

Dissertations

Teacher selection is a complex, critical school personnel function. School leaders in Michigan’s districts will be hiring more teachers as projected enrollment increases and pending teacher retirements combine to open teaching positions. This study examined the effectiveness of teacher selection practices as they compared to selection methods described in administrative textbooks, journal articles, and research studies.

Thirty-six Michigan elementary principals reported their school building and district selection procedures. Qualitative analysis focused on their transcribed responses to interview questions about the aspects of teacher selection. The principals represented public schools that combined varying grade levels of kindergarten through sixth grade.

Thirteen …

Relationships Between Posttraumatic Stress, Acculturation, And Maternal Sensitivity In Vietnamese And Hmong Mothers, Gwendolyn F. Foss Dnsc

Dissertations

The purposes of this study were to determine if posttraumatic stress (PTS), depression, and anxiety occurred in a community sample of Vietnamese and Hmong mothers and to describe relationships between PTS, depression, anxiety, acculturation and maternal sensitivity. Transition theory (Bridges, 1980), and a conceptual model of parenting in immigrant populations building on Belsky's (1984) work, provided the theoretical framework (Foss, 1996). The sample was divided evenly between Vietnamese and Hmong participants. Ages ranged from 17–43 years, time lived in the United States ranged from 3–21 years, and education ranged from no formal education to completion of college. Maternal sensitivity was …

A Kierkegaardian Understanding Of Self And Society: An Existential Sociology, Chris L. Jakway

Dissertations

In examining the history and development of existential sociology, it becomes clear that in its initial phases it was not intended to oppose traditional sociological research, but to complement it. I intend to show that the contemporary chasm between the methodologies can be narrowed with a reconsideration of their common roots in the work of G.H. Mead and the symbolic interactionists. Existential sociologists today offer a practical synthesis that combines that theoretical heritage with philosophic ontology dating back to the writings of Soren Kierkegaard.

My conceptual goal is reveal how the existential philosophy of Kierkegaard, while not irrational or solipsistic, …

Lesbian, Gay, And Bisexual Doctoral Students Mentoring Relationships With Faculty In Counseling Psychology A Qualitative Study, Julianne S. Lark

Dissertations

Mentoring is often endorsed within broader discussions of the education and training of students in counseling and psychology (e.g., Ellis, 1992; Gelso & Fretz, 1992; Kilburg, 1991), although, there is very little in the professional literature about these relationships (Carden, 1990). Out of the small amount of professional training literature on lesbian, gay, and bisexual (LGB) issues, Buhrke and Douce (1991) have provided the only discussion of counseling psychology trainees who themselves are LGB. There are no other published sources that discuss the practice of mentoring with LGB students in counseling psychology.

This qualitative study investigated (LGB) doctoral students’ mentoring …

Preparation For The Gre, Corina Groeger

Dissertations

The present research consisted of two empirical studies and a literature review. The first study was a systematic replication of the studies by Miller, Goodyear-Orwart, and Malott (1996) and Vunovich and Malott (1997). Fourteen undergraduate students and one graduate student participated in four intensive, extensive, structured Graduate Record Examination (GRE) preparation courses that met for seven weeks and lasted between 99 and 140 hours. The courses offered a monetary reward for students who met a minimum of 92% for attendance and participation during the course. The results of this study showed statistically significant mean improvements of 145 points for the …

Disruption Of The Discriminative Stimulus Effects Of (+)-3, 4-Methylenedioxymethamphetamine (Mdma) By (± )-Mdma Neurotoxicity: Protection By Fluoxetine, Thomas B. Virden Iii

Dissertations

It is well established that repeated, high doses of 3, 4-methylenedioxymethamphetamine (MDMA) result in the long-term depletion of serotonin levels and destruction of serotonergic terminals in various locations in the brains of a variety of species. Further, it is also well known that concomitant injections of the serotonin reuptake inhibitor, fluoxetine, prevents this deterioration. It has recently been noted that such MDMA neurotoxicity disrupts stimulus control in rats trained to discriminate MDMA from saline in a drug discrimination procedure (Schechter, 1991a).

In order to extend Schechter's findings to the optical isomers of MDMA and to explore the potential of fluoxetine …

Analytical And Experimental Study Of Investment Casting With Laser Stereolithography Models, Wen-Long Yao

Dissertations

This dissertation presents an analytical and experimental investigation of ceramic shell cracking during the burnout process in investment casting with internally webbed laser stereolithography (SLA) patterns. Included in the consideration are the cracking temperature of the ceramic shell, the web link buckling temperature, and the glass transition temperature of the epoxy resin. The hypothesis is that shell cracking will occur when the cracking temperature is lower than the glass transition temperature and the web buckling temperature.

An analytical and experimental study has been conducted, with the cross-sectional area, the span length of the web structure, and the shell thickness being …

A Combined Simulated Annealing And Tabu Search Strategy To Solve Network Design Problem With Two Classes Of Users, Qifeng Zeng

Dissertations

A methodology to solve a transportation network design problem (TCNDP) with two classes of users (passenger cars and trucks) is developed. Given an existing highway system, with a capital investment budget constraint, the methodology selects the best links to be expanded by an extra lane by considering one of three types of traffic operations: exclusive for passenger cars, exclusive for trucks, and for both passenger cars and trucks such that the network total user equilibrium (UE) travel time is minimized.

The problem is formulated as an NP-hard combinatorial nonlinear integer programming problem. The classical branch and bound methodology for the …

Automobile Air Bag Inflation System Using Pressurized Carbon Dioxide, Bart Adams

Dissertations

A novel air bag inflator based on the evaporation ofliquefied carbon dioxide was developed. A detailed qualitative model wasestablished on the basis of an extensive experimental study. An integratedquantitative model of this inflator was constructed.

The system was studied by discharging the inflatorinto a tank and measuring pressure and temperature evolution (0-50 ms). Thedispersion of the two-phase spray duringinflation was investigated by high-speed cinematography.

The optimal storage pressure of the liquid CO₂was found to be 2000 psig (at 22 °C). Two distinct inflator behaviors wereidentified. First, at conditions corresponding to an initial entropy below the critical point, atwo-phase …

Space-Time Reduced Rank Methods And Cfar Signal Detection Algorithms With Applications To Hprf Radar, Tareq F. Ayoub

Dissertations

In radar applications, the statistical properties (covariance matrix) of the interference are typically unknown a priori and are estimated from a dataset with limited sample support. Often, the limited sample support leads to numerically ill-conditioned radar detectors. Under such circumstances, classical interference cancellation methods such as sample matrix inversion (SMI) do not perform satisfactorily. In these cases, innovative reduced-rank space-time adaptive processing (STAP) techniques outperform full-rank techniques. The high pulse repetition frequency (HPRF) radar problem is analyzed and it is shown that it is in the class of adaptive radar with limited sample support. Reduced-rank methods are studied for the …

A Low-Cost High-Speed Twin-Prefetching Dsp-Based Shared-Memory System For Real-Time Image Processing Applications, Charalambos Stephanou Christou

Dissertations

This dissertation introduces, investigates, and evaluates a low-cost high-speed twin-prefetching DSP-based bus-interconnected shared-memory system for real-time image processing applications. The proposed architecture can effectively support 32 DSPs in contrast to a maximum of 4 DSPs supported by existing DSP-based bus- interconnected systems. This significant enhancement is achieved by introducing two small programmable fast memories (Twins) between the processor and the shared bus interconnect. While one memory is transferring data from/to the shared memory, the other is supplying the core processor with data. The elimination of the traditional direct linkage of the shared bus and processor data bus makes feasible the …

Removal Of Volatile Organic Compound (Voc) Vapors In Biotrickling Filters : Process Modeling And Validation With Chlorinated Aromatic Compounds, Christos J. Mpanias

Dissertations

This study dealt with the removal of vapors of volatile organic compounds from airstreams in biotrickling filters (BTFs). A detailed general model was developed for describing the process under steady-state conditions. The model accounts for mass transfer between phases (air, liquid, biofilm) and biodegradation of pollutants in the biofilm. It also accounts for potential kinetic interactions among pollutants as well as potential process limitations by oxygen availability.

The general model was experimentally validated using mono-chlorobenzene (m-CB) and ortho-dichlorobenzene (o-DCB) as model compounds either alone or in mixture with each other. Before BTF experiments were undertaken, a systematic kinetic study was …

Robust Fuzzyclustering For Object Recognition And Classification Of Relational Data, Sumit Sen

Dissertations

Prototype based fuzzy clustering algorithms have unique ability to partition the data while detecting multiple clusters simultaneously. However since real data is often contaminated with noise, the clustering methods need to be made robust to be useful in practice. This dissertation focuses on robust detection of multiple clusters from noisy range images for object recognition. Dave's noise clustering (NC) method has been shown to make prototype-based fuzzy clustering techniques robust. In this work, NC is generalized and the new NC membership is shown to be a product of fuzzy c-means (FCM) membership and robust M-estimator weight (or possibilistic membership). Thus …

The Intelligent Browser For Texpros, Chih-Ying Wang

Dissertations

Browsing is a technique, which helps users to formulate their query and retrieve information in the information retrieval system. This technique provides users with capabilities of understanding their information needs and gaining system knowledge during the course of the browsing and thus it eases the users' burden when issuing queries. The basic components of the browser provides an underlying structure which allows users to navigate and a browsing process controller which provides users with the needed assistance during each browsing session.

In this dissertation, a new infrastructure (OP-Net), transformed from the existing object network is proposed. Each object in the …

Performance Improvements In Wireless Cdma Communications Utilizing Adaptive Antenna Arrays, Weichen Ye

Dissertations

This dissertation studies applications of adaptive antenna arrays and space-time adaptive processing (STAP) in wireless code-division multiple-access (CDMA) communications. The work addresses three aspects of the CDMA communications problems: (I) near-far resistance, (2) reverse link, (3) forward link. In each case, adaptive arrays are applied and their performance is investigated.

The near-far effect is a well known problem which affects the reverse link of CDMA communication systems. The near-far resistance of STAP is analyzed for two processing methods: maximal ratio combining and optimum combining. It. is shown that while maximal ratio combining is not near-far resistant, optimum combining is near-far …

Modelling Of In-Situ Bioremediation With Emphasis On Inhibitory Kinetics And Biomass Growth, Dilip Kumar Mandal

Dissertations

This thesis was motivated by the need for better engineering tools to predict the extent of contaminant plume migration in the saturated zone. The principal result was a mathematical model analogous to a catalytic packed-bed reactor, in which the subsurface was considered to be composed (conceptually) of soil aggregates (the "catalyst" particles, in which biodegradation, diffusion, and sorption take place), and a mobile phase (groundwater) passing around the aggregates, in which convection, axial diffusion, and mass transfer from the aggregates take place.

The modelling emphasis was on a more detailed exposition of the biokinetics of the system (including an inhibitory …

Knowledge-Based Document Filing For Texpros, Xien Fan

Dissertations

This dissertation presents a knowledge-based document filing system for TEXPROS. The requirements of a. personal document processing system are investigated. In order for the system to be used in various application domains, a flexible, dynamic modeling approach is employed by getting the user involved in document modeling. The office documents are described using a dual-model which consists of a document type hierarchy and a folder organization. The document type hierarchy is used to capture the layout, logical and conceptual structures of documents. The folder organization, which is defined by the user, emulates the real world structure for organizing and storing …

Major Trauma Outcomes: At What Cost? And For Whom? A Cost-Effectiveness Analysis, A. Elaine Bond Dnsc, Msn, Aprn, Ccrn

Dissertations

The purpose of this triangulated descriptive study was threefold: (a) to identify the financial costs for acute trauma care, including costs for those who die early in treatment, and who pays those costs; (b) to identify the relationship between costs and severity of injury; and (c) to identify survivor functional and psychosocial costs, or quality of life, not only by current health care outcome criteria, but also from patients' and families' perspectives. Retrospective review determined the financial differences (total charges of $9,945,973 and institutional costs of $7,089,962) for 370 patients' severity of injury and functional outcomes at discharge, using the …

Being Alone: The Experience Of Elderly Homebound Females, Sharon Davis Burt Dnsc, Msn, Rn

Dissertations

Elderly women comprise one of the fastest growing segments of the population in the United States. This growth is due in large part to increasing longevity, and a woman's life expectancy has now reached 79 years. However, along with those added years comes an increase in morbidity and a greater likelihood of living alone. This study describes the life experience of a specific group of elderly women, those who are homebound and living alone. When elderly women are included in research, the same combination of descriptors used for the participants in this study has not been incorporated. Consequently, while much …

The Journey Through Perspective Transformation: Learning Nursing Theory, Judith R. Heggie Dnsc, Ms, Rn

Dissertations

Through the use of grounded theory, educational methods most useful for nurses to achieve a perspective transformation, as exemplified by learning nursing theory were examined. Perspective transformation is a theory originally developed by Mezirow (1978) in a study of older women returning to college for additional education. Mezirow defined perspective transformation as the alteration or change of meaning perspectives. Perspective transformation in an individual can be compared to a paradigm change within a scientific community. Within the nursing literature on perspective transformation, most articles related to the perspective transformation needed for nurses to learn to use nursing theory as the …

Reflections Of Reflections Of Reflections: A Multi-Case Study Of Women Educators' Callings To The High Arctic, Judith Knapp Edd

Dissertations

This study examines the stories of six women educators who were called to teach in remote Aboriginal communities in the Northwest Territories, Canada, from 1970 to 1985. Placed within a historical context, I set out to understand what called each educator to teach in a cultural context so different from her own in Canada's Arctic. In order to arrive at a deeper, more intrinsic understanding of her career decisions, I explored each educators calling through three, increasingly deeper levels of reflection. In Reflections, as “in an instance of reflecting,” I explored each participant's call to teach, specifically her calling to …

Molecular Modelling Studies Of Acetylcholinesterase, Charilaos E. Linaras

Dissertations

The controversial role of electrostatic interactions in the process of steering of acetylcholine into the active site of acetylcholinesterases was investigated in this study. A novel methodology was implemented to simulate the process of recognition of acetylcholine by Torpedo Californica and both wild type and charge neutralized mutated Human AChE. The obtained results suggest the important role of coulombic interactions in the steering process. The steering process of selected irreversible AChE inhibitors was also simulated supporting the role of electrostatic interactions in the recognition process.

A novel methodology was also employed to model the covalent adducts of Torpedo Californica and …

The Relationship Of Saudi Managers’ Characteristics And Their Support Of The Transfer Of Training To The Workplace, Khalid M. Alhazmi

Dissertations

Many HRD professionals have pointed out that one of the most important elements for transfer of training to the workplace is management support. However, there is little discussion concerning management characteristics that support the transfer of training to the workplace. The purpose of this study was to investigate management characteristics that inhibit or promote the transfer of training to the workplace and to provide information regarding those characteristics to companies.

This study focused on one main question: Do management characteristics have an effect on management support of the transfer of training to the workplace? To answer this question, a study …

The Role Of The Parish Pastor As Mental Health Provider: Counseling Competency And Personality Characteristics, John Phillip Burgess

Dissertations

United Methodist pastors, serving churches in the State of Michigan, were surveyed regarding their participation in counseling and referral to other mental health providers. In addition to a demographic questionnaire, each pastor completed two standardized instruments, the Counseling Self-Estimate Inventory (COSE) (Larson, et al., 1992) and the Edwards Personal Preference Schedule (EPPS) (Edwards, 1959). Dependent variables of amounts and types of counseling being conducted, scores from the COSE and EPPS, and four satisfaction ratings, were compared across several independent variables including: pastor's gender, age, race, length of service, theological orientation, and amount of academic preparation specifically related to mental health/counseling …

A Study Of Local-Cosmopolitan Orientation With A University Support Staff, Sharon Carr

Dissertations

The purpose of this study is to identify the local-cosmopolitan orientation of a subset of university support staff members and to examine the relationship between that orientation and (a) gender, (b) age, (c) years of service, (d) percentage of business/financial tasks in one’s job, (e) percentage of time spent in direct contact with students, and (f) the self-perception of how essential one’s job is to the mission of the university. The local-cosmopolitan concept used was based on the definition by Qouldner (1957) and includes his three elements: loyalty, operational style, and reference group use. Each one of these elements, as …

Visitor In A Foreign Land: Reflections On Intercultural Adjustment In The Republic Of Armenia, Jerry L. Johnson

Dissertations

This first person, autobiographical account of one American citizen’s nine-week experience covering two years in the Republic of Armenia answers the question, aIs it possible to become resocialized in a foreign culture?’ Employing the experimental writing method called personal experience narrative, the author uses personal journal accounts and autobiographical stories as primary data to demonstrate his movement from ’modem tourist’ (MacCannell, 1976; 1992) to resocialized individual and provide a rich and detailed description of the Armenian homeland undergoing significant social changes after the collapse of the Soviet Union in 1991.

This study offers a model of socialization called ’life-learning’ to …