Digital Commons Network^™

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 …

An Assessment Of The Characteristics Of Catholic School Boards In The State Of Michigan, Frank C. Wippel

Dissertations

This study describes the nature and development of Catholic school boards, reports the characteristics of Michigan Catholic school boards, and investigates relationships between involvement in key board functions (establishing mission, long-range planning, budget monitoring, policy development, and marketing) and selection processes, governance postures, and training. The findings indicate a relationship between key board function involvement, election process, consultative governance posture, and training. Survey methodology and design was used to obtain the data for the study. Board presidents and school administrators from all 358 Catholic schools in the state were invited to participate. A 9 6 % response rate was obtained. …

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, …

Experimental And Numerical Investigation Of Abrasive Waterjet Polishing Technology, Fenggang Li

Dissertations

The objective of this investigation is the development of the abrasive waterjet (AWJ) based polishing technology. The result of the investigation will assist the implementation of AWJ polishing for manufacturing processes and procedures.

Experimental exploration of AWl polishing involving processing of difficultmachine materials such as Alumina ceramic and stainless steel. Surface improvement due to this processing is evaluated by measuring the roughness of the generated surfaces and examining the microhardness and micro-topography of the surfaces using Scanning Electronic Microscopy (SEM). The surface roughness of 0.3 micron was obtained at samples of ceramic and metal alloys at a reasonable rate using …

The Constant Fracture Angle Model For Cementitious Materials, Suk Ki Kim

Dissertations

Fracture mechanics of concrete has been investigated for the past two decades using linear elastic and nonlinear fracture mechanics concepts. The models proposed so far remain questionable largely due to specimen dependency of the proposed fracture parameters.

In this study, a new approach for modeling the fracture characteristics of concrete and fiber reinforced concrete is proposed. The model depends on the load CMOD relationship rather than the traditional load-deflection principle. Although energy consumed during fracture is definitely a direct function of the load displacement response, it was observed that traditional displacement measurement included an extraneous and erratic portion due to …

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 …

Pattern Discovery In Sequence Databases : Algorithms And Applications To Dna/Protein Classification, Gung-Wei Chirn

Dissertations

Sequence databases comprise sequence data, which are linear structural descriptions of many natural entities. Approximate pattern discovery in a sequence database can lead to important conclusions or prediction of new phenomena. Traditional database technology is not suitable for accomplishing the task, and new techniques need to be developed.

In this dissertation, we propose several new techniques for discovering patterns in sequence databases. Our techniques incorporate pattern matching algorithms and novel heuristics for discovery and optimization. Experimental results of applying the techniques to both generated data and DNA/proteins show the effectiveness of the proposed techniques.

We then develop several classifiers using …

Knowledge Discovering For Document Classification Using Tree Matching In Texpros, Ching-Song Wei

Dissertations

This dissertation describes a knowledge-based system for classifying documents based upon the layout structure and conceptual information extracted from the content of the document. The spatial elements in a document are laid out in rectangular blocks which are represented by nodes in an ordered labelled tree, called the "layout structure tree" (L-S Tree). Each leaf node of a L-S Tree points to its corresponding block content. A knowledge Acquisition Tool (KAT) is devised to create a Document Sample Tree from L-S Tree, in which each of its leaves contains a node content conceptually describing its corresponding block content. Then, applying …

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 …

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 …

The Journey From Nonexerciser To Exerciser: A Grounded Theory Study, Keri Kuniyoshi Medina Dnsc, Ms, Rn

Dissertations

The physiological and psychological health benefits of regular physical exercise are well-documented; however, drop-out rates from both supervised and unsupervised exercise remain high. Many potential influences on exercise behavior have been studied, but with largely inconsistent results, making it difficult to identify key targets for intervention. The purpose of this study was to explore the process through which nonexercisers become exercisers, and the contextual factors which affect movement through this process, in order to enable nurses to more successfully assist clients to incorporate exercise into their lifestyles. The exercise experiences of 22 individuals who had successfully made the transition from …

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 …

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 …

The Public Administrationist As Civic Shaman: The Self-Reflective Integrator Of Policy Frames Of Reference And Social Character, Phillip A. Brown

Dissertations

This study discusses the discipline of Public Administration and the Public Administrationist in relation to policy frames of reference and social character. The relationship of policy frames of reference and social character is the basis for public trust As the American political system becomes more and more fragmented, public administrationists, sometimes by default, become the trustees for safeguarding the public trust.

The concept of policy frames of reference, as it evolves in this discussion, refers to the ability of the public administrationist to understand the interactions of changing issues impacting on the interactions of changing issues, or quantum thinking. Social …

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 …

The Discriminative Stimulus Properties Of Morphine And U-50,488h In A Three-Key Assay: A Mu And Kappa Opioid Discrimination In The Pigeon, Malath Makhay

Dissertations

Opiate drugs have been classified in two-choice assays according to their ability to produce generalization in animals to the prototypicix opiate, morphine, versus vehicle, or to the k opioid, U -50,488H versus vehicle injections (Picker & Dykstra, 1987). A three-choice discrimination procedure, in which subjects discriminate among morphine, U -50,488H , and vehicle injections, might afford a greater degree of precision in characterizing the subjective effects of opioids. The feasibility of such a procedure was demonstrated in the present study, in which five pigeons were trained to discriminate among injections of 5 .6 m g/kg morphinel 5 .6 m g/kg …

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 …

Investigation Of Dynamic Friction In Lubricated Surfaces, Hanuman Rachoor

Dissertations

The research reported in this dissertation is concerned with the development of friction models for lubricated contacts. A few analytical models have been developed to investigate the friction under dynamic velocity conditions. In this study, two different tribological situations such as conformal and non-conformal contacts have been chosen. Friction modeling covers boundary, mixed and full fluid film friction regions. A new theory based on the elastic properties of the surface materials, and fluid film properties of the lubricant at the contact has been developed to determine the dynamic friction in boundary, mixed and full hydrodynamic lubrication regions. In the full …

Anaerobic Digestion And Acid Hydrolysis Of Nitrocellulose, Fong-Jung Tai

Dissertations

In this investigation, studies were conducted to evaluate the biodegradation of nitrocellulose in anaerobic batch reactors with and without the supplemental carbon inducers, such as cellulose, cellobiose, and lactose. Results from the anaerobic study show that degradation of nitrocellulose alone is difficult and that nitrocellulose degradative enzymes could be induced by the three inducers tested. As high as 48.91% conversion could be obtained at Cellulose/Nitrocellulose ratio of 1 to I. Studies also indicated that type 20 and 50 celluloses would be more effective and optimum pH was about 6.4 in biodegradation of nitrocellulose. Three testing systems, namely, single-stage, two-stage, and …

School Reform: Leadership Through Shared Decision-Making, Mary Juliet Martel Edd

Dissertations

Educational reform has a long history and schools have gone through cycles of change. This study, however, focuses on the last ten years of reform, often referred to as the restructuring movement. Shared decision making is one of the fundamental changes promoted by this current reform effort. Restructuring the decision-making process to include teachers and parents is a significant change from the hierarchical process that has been in place in most of today's schools. It is time to recognize that schools are complex social institutions that experience change only through its people. By giving those closest to children a stronger …

An Evaluation Case Study Of The Effects Of A Learning Style Awareness Program For Ninth Graders At An Independent School, Dorene Casey Mclaughlin Edd

Dissertations

The purpose of this study was to examine the implementation of a year-long learning style awareness program and its effects on locus of control and academic achievement in a ninth grade population. This study was also designed to collect subjective data from students on their perceptions of responsibility for their own achievement, ability to identify their individual learning style, a willingness to ask for help, and in addition, over parental conflict. This study was conducted, using a sample of 76 ninth graders, at an independent college preparatory school in a large Southern California city. All subjects were administered the National …

A Case Study Of The Change Process In An Urban Public School As Teachers React To Mandated Change, Susan Kurland

Dissertations

No abstract provided.

A Study Of The Influence Of Organizational Context On The Purpose, Structure, Operation And Impact Of School Leadership Teams In Suburban Elementary Schools, Aurora Marie Morris-Chase

Dissertations

No abstract provided.

A History Of The Helen C. Peirce School Trust, 1915-1938, Janice Marienthal Rosales

Dissertations

No abstract provided.

Work Stress In The Forensic Psychiatric Facility: The Relationship Between Coping Responses And Personal Need For Structure, Nilsa Rivera

Dissertations

No abstract provided.