Digital Commons Network^™

Culture-Specific Hiv/Std Prevention Programming For Lesbian And Bisexual Women, Kathleen M. Morrow

Dissertations

HIV/AIDS prevention research continues to target populations in which AIDS is already responsible for a significant number of deaths. Since an AIDS diagnosis often indicates the transmission of HIV several years earlier, targeting groups currently manifesting AIDS neglects those groups which may be at risk for transmission of HIV today. Among the lowest incidence in known cases of AIDS are women who have sex with women. Despite a preponderance of biomedical research which implicates vaginal secretions and blood products as vehicles in HIV transmission, there remains only a minimal effort to educate these w om en regarding their risk of …

Elementary Teachers’ And Principals’ Perceptions Of Principal Leadership Style And School Social Organization, Thomas Jack Evans

Dissertations

The context of teaching has dramatically changed over the last several decades following two national waves of educational reform. Researchers have focused attention on the social restructuring of schools (Liebermann, 1992) and appropriate leadership strategies, such as transformational leadership (Leithwood, 1993; Sergiovanni, 1990), for achieving comprehensive changes leading toward increased school effectiveness. Leadership that can stimulate "bottom-up" participation from teachers and principals in efforts to restructure schools has been recommended (Rowan, 1990; Sergiovanni, 1994). Therefore, the purpose of this study was to examine the relationship between elementary principals’ use of transformational leadership strategies as determined by teacher reports and the …

Children With Hiv: How They Feel About What Parents Say, Susan Pease Instone Dnsc, Msn, Cpnp

Dissertations

With improvements in diagnosis and care, children with HIV infection are living long enough to reach school age, a stage when they are capable of perceiving the stigmatizing, life-threatening nature of their illness. Many parents desire to protect them from this knowledge by avoiding an open dialogue about their disease, even though pediatric professionals advocate disclosure. Research-based guidelines about the risks and benefits of telling, however, have not been available in the literature. Using an innovative, qualitative approach through the use of grounded theory and projective drawing techniques, this investigation sought to explore what parents said about the illness and …

A Qualitative Study Of Friendships And Student-Faculty Relationships: Experiences And Perspectives Of Korean International Students Studying In The United States, Jinsook Kim

Dissertations

Experiences and perceptions among a group of Korean international students studying in the United States were examined in terms of friendships and student faculty relationships. The study used a qualitative approach and was guided by cross-cultural and cultural learning perspectives. Semi-structured interviews conducted in the Korean language were used for data collection. From a research population of 72 Korean international students enrolled at a large Midwestern university, 24 were selected using purposeful sampling, 6 from each of the four identified subgroups. These subgroups were male and female undergraduates and male and female graduates.

Participant experiences and perceptions concerning closest friendships …

The Relationships Among Expectancy, Hypnotizability, And Treatment Outcome Associated With Eye Movement Desensitization In The Treatment Of Post-Traumatic Stress Disorder, Lisa Kimberly Largo-Marsh

Dissertations

A pre-test, post-test comparison group design was utilized to assess the effectiveness of two interventions on symptoms associated with Post-Traumatic Stress Disorder. Subjects were randomly assigned to one of two treatments: Eye Movement Desensitization and Reprocessing (EMDR) or structured writing sessions. A standardized diagnostic interview was used to screen subjects and provide diagnosis and symptom profile at intake and one-month follow-up. Standardized self-report measures were used to assess treatment outcomes. Repeated measures ANOVA revealed no significant differences between the two treatments. Both treatments were effective in significantly reducing post-traumatic symptoms at post-test and follow-up, although slightly different patterns were evident. …

Implementation Of An "Early Return To Duty" Policy Within The Michigan Civil Service: An Exploratory Study, James Patrick Hurren

Dissertations

In an effort to control rising Worker's Compensation costs and accommodate disabled employees, the State of Michigan initiated an "Early Return to Duty" policy which encourages injured workers to return to work prior to being fully recuperated. During the recovery period, injured workers are assigned restricted duties consistent with their medical limitation.

Despite legislative and administrative mandates, the Early Return policy has not been fully implemented by all departments within Michigan Civil Service. The lack of uniform acceptance and application of the policy presents serious complications for managing resources effectively and has a direct bearing on achieving expected policy outcomes. …

Comparison Of Selection-Based Vs. Topography-Based Verbal Behavior, William F. Potter

Dissertations

Michael (1985) distinguished between selection-based and topography-based verbal behavior. Some researchers have started to examine this distinction, as does this research. This study examined the contribution that response-produced kinesthetic stimulation has on the acquisition of conditional discriminations and equivalence relations by college students. To accomplish this, a special computerized nonidentity matching-to-sample task (a selection-based task) was created, which arranged for each participant to perform under two conditions. The first condition arranged for participants to make a stereotypical response to each choice stimulus selected. The second condition arranged for a unique response to be made to each choice selected. The number …

Teaching/ Learning Experiences: Meanings Constructed By Participants Ini A Degree Completion Program For Adult Students, Natalie K. Manbeck

Dissertations

The purpose of this study was to explore the meaning that teachers and their adult students construct of their classroom experiences and to see how those meanings impact the teaching/ learning process. Because of the multiple factors affecting an educational experience, this study took the view that this should be explored in a holistic way. Most educational research focuses on the teacher's perspective, with students and their learning considered as the result of the educational process. In order to more fully understand what is occurring in classrooms and what students are actually learning, it is important to ascertain student perceptions …

Characterization And Fabrication Of A (6h)-Sic As A Piezoresistive Pressure Sensor For High Temperature Applications, Robert Sylvester Okojie

Dissertations

A prototype monolithic 6H-SiC pressure sensor operational up to 350°C, with potential to operate up to 600°C, was batch fabricated and tested. At temperatures higher than 450°C, silicon diaphragms creep under minimal load. To operate beyond 450°C, therefore, the use of 6H-SiC was proposed. However, three key technological issues - fabrication, high temperature metallization, and gage factor characterization - had to be resolved. Since conventional fabrication technology is not applicable to SiC due to its near inert chemistry, photoconductive selectivity techniques to etch the piezoresistors were developed. Techniques to wet etch the cavities in a dark current mode were developed, …

Towards Designing A Knowledge-Based Tutoring System : Sql-Tutor As An Example, Gang Zhou

Dissertations

A Knowledge-Based Tutoring System, also sometimes called an Intelligent Tutoring System, is a computer based instructional system that uses artificial intelligence techniques to help people learn some subject. The goal of the system is to provide private tutoring to its students based on their different backgrounds, requests, and interests. The system knows what subject materials it should teach, when and how to teach them, and can diagnose the mistakes made by the students and help them correct the mistakes.

The major objective of this dissertation is to investigate and develop a generic framework upon which we can build a Knowledge-Based …

Explicit Congestion Control Algorithms For Available Bit Rate Services In Asynchronous Transfer Mode Networks, Ambalavanar Arulambalam

Dissertations

Congestion control of available bit rate (ABR) services in asynchronous transfer mode (ATM) networks has been the recent focus of the ATM Forum. The focus of this dissertation is to study the impact of queueing disciplines on ABR service congestion control, and to develop an explicit rate control algorithm.

Two queueing disciplines, namely, First-In-First-Out (FIFO) and per-VC (virtual connection) queueing, are examined. Performance in terms of fairness, throughput, cell loss rate, buffer size and network utilization are benchmarked via extensive simulations. Implementation complexity analysis and trade-offs associated with each queueing implementation are addressed. Contrary to the common belief, our investigation …

Design, Process And Performance Simulation Of A 360x360-Element Very High Frame Rate Burst-Image Sensor, Guang Yang

Dissertations

A process was developed for fabrication of 360x360-element Very High Frame Rate (VHFR) burst-image sensor on the bases of one-dimensional (1-D) and two-dimensional (2-D) device and process simulations using SUPREM III, SUPREM IV, PISCES IIB and ISE-TCAD software, and the process data provided by the David Sarnoff Research Center. This process includes SiO₂-Si₃N₄ gate dielectric, four-levels of polysilicon, three-levels of metal, eight implants, and requires twenty-one mask levels. The imagers with a 2-cmx2-cm chip size were fabricated at the David Sarnoff Research Center. The VHFR burst-image sensor is capable of capturing images at frame rates …

Integrating Hypertext With Information Systems Through Dynamic Mapping, Jiangling Wan

Dissertations

This dissertation presents a general hypertext model (GHMI) supporting integration of hypertext and information systems through dynamic mapping. Information systems integrated based on this model benefit from hypertext function-alities (such as linking, backtracking, history, guided tours, annotations, etc.) while preserving their own computation capabilities. Although systems supporting integration of hypertext and interface-oriented information systems do exist in hypertext literature, there is no existing model or system effectively supporting integration of hypertext and computation-oriented information systems. GHMI makes its major contributions by both extending and specifying the well-known Dexter Hypertext Reference Model. GHMI extends the Dexter model to overcome its limitations. …

Theory And Design Of Portable Parallel Programs For Heterogeneous Computing Systems And Networks, Ying-Chieh Wu

Dissertations

A recurring problem with high-performance computing is that advanced architectures generally achieve only a small fraction of their peak performance on many portions of real applications sets. The Amdahl's law corollary of this is that such architectures often spend most of their time on tasks (codes/algorithms and the data sets upon which they operate) for which they are unsuited. Heterogeneous Computing (HC) is needed in the mid 90's and beyond due to ever increasing super-speed requirements and the number of projects with these requirements. HC is defined as a special form of parallel and distributed computing that performs computations using …

A Full Wave Method For Rough Surface Scattering Using Fictitious Current Distributions, Anthony A. Triolo

Dissertations

Rough surface scattering is a current topic of interest in many diverse fields. But, despite its importance, the two most widely used solution methods, the Kirchhoff and first order perturbation methods, are valid only for a restricted range of surface types. There is a large range of surface statistics for which neither of these theories is valid. There are purely numerical solutions to the problem, i.e., the integral equation technique and FDTD method, but these methods require a prohibitively large amount of computer time and storage space for use in practical applications. A full wave method has been introduced by …

Discrete Element Modeling Of Dry Granular Material Using A Massively Parallel Supercomputer, David W. Washington

Dissertations

It is the state-of -the-art within Geotechnical Engineering to model soils as systems of particles rather than using the traditional continuum approach. Simulating these systems of particles for geotechnical boundary value problems results in systems which are of necessity large, motivating the application of massively parallel supercomputers. This thesis pursues such an approach.

The following work describes numerical experiments using a Discrete Element Method (DEM) paradigm for soils (Trubal) together with massively parallel computers with Single Instruction Multiple Data (SIMD) architecture. The discrete element method describes the behavior of granular assemblies using the classical mechanics of discrete bodies. The computational …

The Effect Of Written Information And Reassurance On Patient Satisfaction, Anxiety, And Intent To Return For Emergency Care, June Andrea Dnsc

Dissertations

Patients' satisfaction is one of the primary goals of emergency department (ED) providers today. As emergency departments are overcrowded, stressful environments, anxious patients want to be kept informed. Nurses have the opportunity to meet these needs and possibly influence the patients' perception of the experience and intent to return for future care. This study examined the effects of providing written information and reassurance on patient satisfaction, anxiety, and intent to return for emergency care. The design was a posttest design involving a comparison between the control and three experimental groups. Two hundred and forty patients participated in the study, approximately …

Ethical Decision-Making Among Critical Care Unit Nurses, Mary Ellen Bowen Dnsc, Mn, Rn, Cnaa

Dissertations

The health care business has created complex relationships between consumers and health care institutions. Rising health costs, rationing of health care and medical technology have put critical care unit (CCU) nurses in complex environments where they must face ethical conflict. CCU nurses find themselves ill equipped to make sound decisions concerning ethical dilemmas. Nurses must ensure the patient's choices are respected and honored due to the duties inherent in the nurse-patient relationship. The purpose of this study was to explore the process of ethical decision making (EDM) as it is experienced by CCU nurses. Gaining an understanding of this process …

Nursing Faculty Connecting With Students: A Heideggerian Hermenteutical Study, Debra I. Craig Dnsc, Msn, Rn

Dissertations

This study sought to gain an insight into the phenomenon of nursing faculty members connecting with students. Caring has been espoused as a key component of nursing education for many decades. In the last 10 years the terms caring and connecting are commonly found associated with each other, and yet there is no clear definition of connecting. It is important to understand a phenomenon from the point of view of those who are experiencing it. Therefore, a study which asked nursing educators to tell stories of the times they had connected with students was undertaken. Ten nurse educators in the …

The Relationship Between Principals' Length Of Administrative Experience And Organizational Leadership Behavior In Elementary Schools In Saudi Arabia, Hamad Adbulaziz Alkherb

Dissertations

The study examined educational leadership behaviors among elementary school principals in Qasim region of Saudi Arabia. Seven independent variables using a survey questionnaire among a randomly selected sample from the identified population. Self-reporting elicited, first, critical background information and, second, data concerning 60 specific leadership behavior items important to work issues, critical areas of educational administration, professional relationship situations, and leadership problems ordinarily confronted. Items were grouped according to five categories of twelve items each.

Ninety-six principals or 80% of the survey sample of 120 responded. Focus of the study derived importantly from an extensive and complex review of literature …

Integrating Knowledge And Action: A Study Of Leadership In The Development Of Master's Degree Programs In Liberal Studies, Janet L. Littrell Edd

Dissertations

Master's degree programs in liberal studies (MALS programs) have proliferated in the United States over the past twenty years. Studying the leadership relationships that faculty and administration form during the MALS program development process provides insight into how non-traditional graduate programs may be developed in the future. The purposes of the study were to investigate the development of MALS programs, and to examine the leaders and followers who successfully advanced the MALS program development agenda. The specific objectives of the study were (1) to examine the theoretical bases and curricular frameworks of MALS programs; (2) to explore how individuals and …

Ground Water Movement Through The Highly-Fractured Crystalline Core Of A Large-Scale, Foreland Uplift, Roy Al Gorge Arch, South-Central Colorado, Timothy L. Clarey

Dissertations

The objectives of this study were twofold: ( 1) to examine the well-exposed, basement core of the Royal Gorge arch as a large-scale, field test of ground water flow through a fractured, crystalline, aquifer system; and (2) to devise a method to more accurately determine the direction of maximum aperture of a fractured aquifer through structural and hydrogeologic analysis.

The recognition of a preferred direction of maximum aperture in a fractured aquifer remains an important hydrogeologic consideration because flow through a fracture is proportional to the cube of the aperture width. Previous studies of hydraulic directions using fracture orientation techniques …

The Effects Of A Corporate Adventure Training Experience On Group Dynamics And Individual Self-Actualization Of Middle-Management Professionals, Scott A. Kelly

Dissertations

Adventure programming has been utilized in the corporate world for training and team building. The focus of this study was to examine the effects of a 2-day corporate Adventure Training program on the group and individual functioning of middle-level managers in a Midwestern manufacturing company. The training utilized ropes course and group activities to develop teamwork and increase group functioning.

A work team consisting of 34 individuals, who were divided into three groups, participated in the training. A control group of 12 individuals was utilized for comparison. Variables of interest included group functioning and self-actualization. Group functioning was measured with …

Lobbying In The Nonprofit Sector: A Study Of Practice And Values, Larry A. Buzas

Dissertations

Executive directors of nonprofit organizations were interviewed to determine their lobbying practices. Direct lobbying and grassroots lobbying, as defined by P. A. 94-455 were studied. Independent variables include: (a) formal organizational support, (b) organizational affiliation, (c) organizational characteristics, and (d) the executive directors' perceptions and demographic characteristics.

Data were collected during semi-standardized interviews. A random sample of 50 executive directors of nonprofit organizations in Michigan was selected. The research shows that executive directors of nonprofit organizations do lobby policy makers at the local, state, and federal levels using the following techniques: (a) face-to-face visits, individually or with coalitions, including providing …

Perinatal Loss: An Exposure Based Approach To Alleviating Feelings Of Grief In Bereaved Parents, Michele Lee Rosa

Dissertations

The efficacy of exposing bereaved parents to stimuli associated with their deceased child as a means of alleviating their grief reaction was explored. Three parents who had suffered a perinatal loss participated. Pre, post, and follow-up measures of depression, hopelessness, anxiety, marital functioning, daily stress, psychopathology, bereavement and grief were gathered.

Results showed clinically significant improvement for two of the three subjects on measures of depression and psychopathology. All subjects showed improved marital functioning. Negative change was seen on a measure of hopelessness for two of the three subjects. The treatment effects for symptoms of stress, anxiety, bereavement and grief …

An Evaluation Of Privatization, Taxes, And User Fees As Alternative Strategies For Municipal Trash Collection, James Neubecker

Dissertations

This study consists of evaluating the perceived quality of the various methods of collecting residential trash and paying for that collection in four Michigan cities. The cities selected are East Lansing, Lincoln Park, Saginaw, and Wyoming. Theyshare similar demographic characteristics, including median income and population size, as well as number and location of trash pick-ups. The study compares paying for trash collection services with tax dollars, user fees, and direct private charges to the vendor. It also evaluates the residents’ perceptions of quality when municipal workers are compared with private company workers providing trash collection services.

Questionnaires were sent to …

An Investigation Of The Relationship Between Homework Assignments In Counseling And Perceptions Of Specific Counselor Characteristics, George T. Starrett

Dissertations

This study investigated the relationship between the use of homework assignments in counseling and perceived counselor characteristics. An analog design was used with 60 introductory psychology students serving as subjects. One of two video taped counseling vignettes was presented to the two subject groups. The counselor depicted in the control group tape did not use homework assignments, while homework assignments were used by the counselor depicted in the treatment group tape.

After viewing the one of the two tapes the subjects completed the Counselor Evaluation Scale (CES) and the Counselor Rating Form-Short (CRF-S) to provide ratings of each of the …

The Experiences Of Mid-Career Elementary Teachers, Susan H.L. Johnston Edd

Dissertations

The demographics of the teaching population in British Columbia indicate a significant number of teachers in mid career. Their cares, concerns, and interests dramatically influence educational activity in the province. The experiences of these educators lie within a context of major restructuring of the entire provincial school system and substantive educational change mandated by the government of British Columbia. Using a phenomenological approach, this study explores the experiences of seven, mid-career, elementary school teachers in one British Columbia school district; investigates how these teachers experience system-wide, mandated, educational change; and suggests implications of these understandings for leadership practice. During three, …

On The Adaptive Multi-Stage Detector For Cancellation Of Multiuser Interference In Cdma Wireless Communication Systems, Nadir Sezgin

Dissertations

The classical multiple access techniques such as Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) schemes are band limited in terms of their capacity to be used for mobile radio communication. Recent developments in the area of digital signal processing, makes Code Division Multiple Access (CDMA) as a possible solution to the demand of capacity for the mobile radio communication. The capacity of CDMA is limited by multiuser interference, that is the interference from the other users.

The goal of this dissertation is to improve the multiuser CDMA detector with high Bit Error Rate (BER) performance, low …

Adaptive Space-Time Processing For Wireless Communications, Xiao Cheng Bernstein

Dissertations

Adaptive space-time processing techniques have been found to increase the capacity of two major, multiple-access wireless communication systems: Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA).

In an IS-54 TDMA system, the frequency re-use factor has to be set to 7 so that cells with the same spectrum are separated far enough to meet a required carrier-to-interference ratio (CIR). Space processing uses multiple antennas which, in turn, provide alternative signal paths in order to cancel interferences and combat multipath fading. We have proposed the eigencanceler method and have reviewed the theoretical optimum combining and the feasible direct …