Digital Commons Network^™

The Three-Contingency Model Of Self-Management, Holly C. Harrison

Dissertations

The goal of this dissertation is to evaluate people's needs for self-management and the effectiveness of their use of the three-contingency model of self-management. This model prescribes a set of self-management procedures that can be applied to self-manage virtually any behavior. College students used these procedures to manage their own behavior as part of an extended psychology-course assignment.

This evaluation began with the Procrastination Survey, the results of which assessed the frequency of the students' self-management problems. The self-management interventions of up to 168 students were then evaluated using their self-reported performance data and an anonymous survey. The performance data …

Who Voted?: Social Class And Participation In United States Presidential Elections, Uisoon Kwon

Dissertations

Low turnout remains a persistent problem in American politics. The decline in turnout has been studied in various ways. In some cases scholars analyze aggregate turnout data and compare turnout in election districts with high and low concentrations o f particular ,social groups (Neimi and Weisberg, 1993). In other cases, surveys provide an opportunity to examine the causes and correlates o f turnout at the individual level. Various researchers find that socio-economic factors are related to turnout. People with more education vote at much higher rates than those with less education, higher income and middle class people are more likely …

Global Optimality Conditions In Mathematical Programming And Optimal Control, Pariwat Pacheenburawana

Dissertations

We derive new first-order necessary and sufficient optimality conditions characterizing global minimizers in mathematical programming and optimal controlproblems. These conditions are based on level sets of an objective functional and they do not assume special structure of a problem (convexity, linearity, etc.). For a mathematical programming problem of minimization of a smooth functional on some compact convex set with equality nonlinear constraints, we derive first-order optimality conditions in the form of a generalized Lagrange multiplier rule. This rule should hold for any point from the level set of the objective functional corresponding to a global minimizer. We demonstrate that these …

Bufadienolides In The Chemical Defenses Of The Toads, Bufo Americanus And Bufo Fowleri, Catherine E. Merovich

Dissertations

I investigated the steroidal chemical defenses (bufadienolides) of Bufo americanus and Bufo fowleri. By the nature of their complex, biphasic life cycles, toads, like other amphibians are important components of aquatic and terrestrial habitats and are prey to numerous invertebrates and vertebrates. Bufadienolides are presumed to be important anti-predatory compounds although much of their chemical ecology is poorly understood. I investigated (1) ontogenetic variation in bufadienolides, (2) bufadienolides from adult parotoid secretion, (3) effectiveness of bufadienolides against a terrestrial predator, and (4) effectiveness of bufadienolides against an aquatic predator. I hypothesized that B. americanuswould have a more extensive …

Structure Preserving Algorithms For Computing The Symplectic Singular Value Decom Position, Archara Chaiyakarn

Dissertations

In this thesis we develop two types of structure preserving Jacobi algorithms for com puting the symplectic singular value decomposition of real symplectic matrices and complex symplectic matrices. Unlike general purpose algorithms, these algorithms produce symplectic structure in all factors of the singular value decomposition.

Our first algorithm uses the relation between the singular value decomposition and the polar decomposition to reduce the problem of finding the symplectic singular value decomposition to th a t of calculating the structured spectral decomposition of a doubly structured m atrix. A Jacobi-like m ethod is developed to compute this doubly structured spectral decomposition. …

Stratification And Domination In Graphs And Digraphs, Ralucca M. Gera

Dissertations

In this thesis we combine the idea of stratification with the one of domination in graphs and digraphs, respectively.

A graph is 2-stratified if its vertex set is partitioned into two classes, where the vertices in one class are colored red and those in the other class are colored blue. Let F be a 2-stratified graph rooted at some blue vertex v . An F -coloring of a graph G is a red-blue coloring of the vertices of G in which every blue vertexu belongs to a copy of F rooted at u . The F -domination number γ …

Examining The Keyword Mnemonic Strategy As An Effective Academic Intervention For High School Students Labeled Emotional Or Behavioral Disordered, Karen A. Kleinheksel

Dissertations

This investigation explored whether keyword mnemonic strategies were effective for high school aged students labeled emotional or behavioral disordered(E/BD) in recalling the definitions of scientific vocabulary terms. Ten students labeled E/BD from a suburban public high school in a Midwestern state participated in this investigation. A demographic description of the subjects indicated the following information: (a) all students' ethnicities were Caucasian, (b) sixty percent of the subjects were male, (c) the average subject's age was 17 years 1 month, and (d) all students were in the tenth through twelfth grades.

In a multiple baseline across subjects design using a single …

Factors Affecting Treatment Program Development In A Mental Health Facility Serving Prisoners, Ruby Miranda Meriweather

Dissertations

There is a paucity of literature on how treatment programs for mentally ill prisoners are developed. Federal mandates require that services to mentally ill prisoners be comparable to what is offered in the community. Planners, therefore, must find ways to provide treatment programs that produce that outcome.

This research identified the most important factors that affect treatment program development and implementation to aid planners in designing treatment programs for mentally ill prisoners. This qualitative study, based on grounded theory, used a structured interview with 61 mental health staff (psychiatrists, nurses, psychologists, social workers, and activity therapists) across three categories (Administrative, …

Changes In Glial Cell Line Derived Neurotrophic Factor And Nerve Growth Factor Expression With Development, Age, Exercise And Hypertension, Bertha C. Rebimbas-Cohen

Dissertations

Neurotrophic factors are important for neuronal growth, survival, and maintenance of cell phenotype. Glial cell line-derived neurotrophic factor (GDNF) affects sensory, autonomic and somatic motor neurons and nerve growth factor (NGF) affects sensory and sympathetic neurons. NGF and GDNF are produced by cardiac muscle and have potent effects on sensory and autonomic neuronal innervation of blood vessels. Neural innervation plays a key role in blood vessel function. Since neural innervation of blood vessels may be regulated by growth factors, we wanted to determine what changes would occur to NGF and GDNF levels with maturity, exercise and hypertension.

Changes in GDNF …

The Italian Homiliary: Texts And Contexts, Michael Thomas Martin

Dissertations

For the Carolingians, preaching was the best manner in which to teach good, Christian behavior orally to the largely illiterate masses. Studying early medieval sermon collections then can provide historians with a great amount of information on, for example, the intended audience and current moral instruction, who wrote the sermons, and the intended impact of the reform requirements. Too often however these early collections are grouped into a rather generalized classification of being little more than an exposition of Scripture composed with little or no originality. Some scholars claim we have no evidence for sermons produced for popular preaching prior …

Meaningful Learning: Reconciling The Tensions Between Constructivist And Environmentally Sustainable Pedagogy, Nancy Van Kannel-Ray

Dissertations

Critics of constructivism argue, in many ways correctly, that this approach to education is culturally and environmentally damaging because constructivism may not develop an understanding of the interdependence between the human community and the world in which people live. Advocates for environmentally sustainable pedagogy argue the importance of understanding patterns of thinking that allow communities to live sustainably. The purpose of this study is to resolve the tensions between the two pedagogical frameworks: constructivism and environmental sustainability.

The tensions are resolved in two ways. First, there are forms of constructivism that align in viable ways with the criteria critics argue …

Reconciling Temporalities: A Substantive Explanation Of The Origins Of Difficulty In The Nurse Patient Encounter, Marilyn Theresa Macdonald Phd

Dissertations

Nurses describe patients as difficult on a regular basis. Nursing research to date has assumed the existence of this phenomenon. Most studies have listed descriptors of the difficult patient and offered interventions for nurses to use to alter patient behavior. Locating of difficulty within the individual and failure to consider the context of the nurse patient encounter is problematic. The practice of locating difficulty in the individual absolves organizations and society of responsibility to work to change factors that contribute to the construction of difficulty. The purpose of this research was to move beyond a focus on the patient as …

Impact Of Standards On Physical Education Teacher Education: Curriculum, Collaboration, And Learning Outcomes, Xiangren Yi

Dissertations

Standards are sweeping across the physical education teacher education field. The purpose of this study was to investigate whether national standards had influenced a change of curriculum, and whether curriculum changes were related to standards, individual or institutional variables. The analysis will also identify whether there are any individual and institutional characteristics that are significant predictors for determining curriculum. This study's targeted participants are a random sample of 110 program directors working in institutions that have a Physical Education Teacher Education program.

Differences were found to exist in directors' perceptions regarding curriculum. Descriptive statistics and ANOVA analysis demonstrated the impact …

Think First For Kids (Tffk): A Longitudinal Analysis Of A School-Based Injury Prevention Curriculum, Dorothy L. Zirkle Phd

Dissertations

Despite years of legislative and public health efforts, unintentional injury continues to be a serious public health problem and is identified as a major priority on the national health care agenda. The high incidence of unintentional injury in the middle childhood age group is of particular interest due to immaturity of the cognitive, psychosocial, and neurophysical dimensions of the child. The purpose of this study was to examine the effectiveness of a school-based curriculum on improving knowledge and self-reported safety behaviors over time among ethnically and socioeconomically diverse elementary school aged children. The social, cultural, cognitive, and behavioral learning theory …

Collaboration Through Partnerships: A Review Of Six Michigan Communities, Cheryl Kay Sibilsky-Soule

Dissertations

The federal government supports the use of collaborative service planning for many federally funded programs. While there are anecdotal studies supporting community collaboration, its use has not been adequately evaluated. This study provides exploratory information regarding the relationship between successful collaboration and outcomes for children and families.

Data were collected from six Michigan communities using a survey tool sent to all members of the six community Family Coordinating Councils. The tool was designed to measure eight factors seen in successful collaboration. The respondents evaluated their own collaborative council on these eight factors.

Three of the communities were thought to be …

The Glucose And Insulin Responsiveness Of The Rat Glucose-6-Phosphate Dehydrogenase Promoter, Daryl Arkwright-Keeler

Dissertations

The regulation of expression of some enzymes involved in glucose homeostasis and fat metabolism requires both insulin and glucose to elicit an effect, while the regulation of others requires only one. Glucose-6-phosphate dehydrogenase (G6PDH), an important enzyme involved in glucose homeostasis, has been shown to be transcriptionally regulated by carbohydrate feeding in rat liver, a diet regime that increases the levels of both glucose and insulin. Our lab had previously shown that insulin induces expression of G6PDH, thus we wanted to determine if glucose also induced G6PDH expression and if so, are the glucose and insulin responses mediated through identical …

Understanding Photosynthesis And Plant Cellular Respiration As “Nested Systems”: The Characterization Of Pre-Service Teachers’ Conceptions, Mary H. Brown

Dissertations

This dissertation project focused on pre-service elementary teachers' conceptions of the plant processes of photosynthesis and cellular respiration as being connected, occurring at multiple ecological levels, and working within "nested systems." Participants enrolled in a biology course designed for elementary education majors provided their views of the processes through a series of tasks with a peer, a semi-structured interview, and clarified both photosynthesisand plant cellular respiration directly following classroom instruction on the two topics. The instructor of the course was interviewed after a preliminary analysis of the participants' responses. Data were analyzed using the qualitative analysis computer program The Ethnograph …

Hope—Heartbeat Of Adult Education: A Phenomenological Inquiry, Phillip L. Moulden

Dissertations

This phenomenological study of the phenomenon—hope identified two essential meaning structures (“change” and “human agency”) in the experiences communicated by the Adult Educators interviewed. It was also discovered that hope is an energy that interacts with Affective, Relative (Re-lay-tive), and Cognitive energies in the lives of the research participants. Understanding how “change” and “human agency” can be aligned with these A.R.C. energies holds implications for further research and the practice of Adult Education.

Hybrid Explicit-Implicit Fdtd-Fem Time-Domain Solver For Electromagnetic Problems, Kakhkhor Abdijalilov

Dissertations

The Finite-Difference Time-Domain (FDTD) method and Finite-Element (FEM) method are numerical techniques used for solving Maxwell's electromagnetic equations. FDTD-FEM hybrid methods opt for combining the advantages of both FDTD and FEM. In this dissertation, signal processing techniques were used to analyze the FDTD stability condition. A procedure, which reduces time-sampling error yet preserves the stability of algorithm is proposed. Both explicit and implicit time-stepping schemes were treated in the framework of the developed method. An improved version of the implicit-explicit FEM-FDTD hybrid method was developed. The new method minimizes reflection from the interface between different types of grids. A class …

Characteristics Of Nanocomposites And Semiconductor Heterostructure Wafers Using Thz Spectroscopy, Hakan Altan

Dissertations

All optical, THz-Time Domain Spectroscopic (THz-TDS) methods were employed towards determining the electrical characteristics of Single Walled Carbon Nanotubes, Ion Implanted Si nanoclusters and Si_1-xGe_x HFO₂, SiO₂ on p-type Si wafers.

For the nanoscale composite materials, Visible Pump/THz Probe spectroscopy measurements were performed after observing that the samples were not sensitive to the THz radiation alone. The results suggest that the photoexcited nanotubes exhibit localized transport due to Lorentz-type photo-induced localized states from 0.2 to 0.7THz. The THz transmission is modeled through the photoexcited layer with an effective dielectric constant described by a Drude …

Turbo Space-Time Coding For Mimo Systems : Designs And Analyses, Hangjun Chen

Dissertations

Multiple input multiple output (MIMO) systems can provide high diversity, high data rate or a mix of both, for wireless communications. This dissertation combines both modes and suggests analyses and techniques that advance the state of the art of MIMO systems. Specifically, this dissertation studies turbo space-time coding schemes for MIMO systems.

Before the designs of turbo space-time codes are presented, a fundamental tool to analyze and design turbo coding schemes, the extrinsic information transfer (EXIT) chart method, is extended from the binary/nonbinary code case to coded modulation case. This extension prepares the convergence analysis for turbo space-time code.

Turbo …

Negotiation Of Software Requirements In An Asynchronous Collaborative Environment, Catherine Lowry Campbell

Dissertations

The effect of task structure and negotiation sequence on collaborative software requirements negotiation is investigated. This work began with an extensive literature review that focused on current research in collaborative software engineering and, in particular, on the negotiation of software requirements and the requisite collaboration for the development of such requirements. A formal detailed experiment was then conducted to evaluate the effects of negotiation sequence and task structure in an asynchronous group meeting environment. The experiment tested the impact of these structures on groups negotiating the requirements for an emergency response information system. The results reported here show that these …

Experimental Technique For Studying High-Temperature Phase Equilibria In Reactive Molten Metal Based Systems, Alexandre Ermoline

Dissertations

The general objective of this work is to develop an experimental technique for studying the high-temperature phase compositions and phase equilibria in molten metal-based binary and ternary systems, such as Zr-O-N, B-N-O, Al-O, and others. A specific material system of Zr-O-N was selected for studying and testing this technique.

The information about the high-temperature phase equilibria in reactive metal-based systems is scarce and their studying is difficult because of chemical reactions occurring between samples and essentially any container materials, and causing contamination of the system.

Containerless microgravity experiments for studying equilibria in molten metal-gas systems were designed to be conducted …

Congestion Control In Resilient Packet Ring Networks, Alharbi Fahd

Dissertations

The Resilient Packet Ring (RPR) is a new metro technology; RPR shares SONET's ability in providing fast recovery from link and node failures as well as inherits the cost and simplicity of Ethernet. RPR, like SONET/SDH, is a ring based architecture consisting of two optical rotating rings (uni-directional). In RPR, packets are removed from the ring at the destination so that different segments of the ring can be used at the same time for different flows; as a result, the spatial reuse feature is achieved. Enabling the spatial reuse feature introduces the challenge of guaranteeing fairness among the nodes sharing …

Behavior Of Structural Concrete Members Strengthened By Composite Fabrics, Jian Chen

Dissertations

The new technique of using Fiber Reinforced Polymer (FRP) materials to repair and strengthen various concrete members is becoming more and more popular in structural retrofitting field. Among all the confining materials, Carbon Fiber Reinforced Polymer (CFRP) fabric jackets are identified as an effective way to enhance the strength and ductility of concrete members due to its superior mechanical properties. This study investigates the detailed structural behavior of confined concrete members using CFRP fabric jackets by both analytical and experimental approaches.

A series of CFRP wrapped concrete cylinder tests were conducted to study the compressive stress-strain behavior for CFRP confined …

Detection Of Network Anomalies And Novel Attacks In The Internet Via Statistical Network Traffic Separation And Normality Prediction, Jun Jiang

Dissertations

With the advent and the explosive growth of the global Internet and the electronic commerce environment, adaptive/automatic network and service anomaly detection is fast gaining critical research and practical importance. If the next generation of network technology is to operate beyond the levels of current networks, it will require a set of well-designed tools for its management that will provide the capability of dynamically and reliably identifying network anomalies. Early detection of network anomalies and performance degradations is a key to rapid fault recovery and robust networking, and has been receiving increasing attention lately.

In this dissertation we present a …

The Feasibility Of Micromachined Dynamic Resonant Beam Coriolis True Mass Flow Meter, Sang Hwui Lee

Dissertations

The technological advances of micro-electro-mechanical systems (MEMS) in the past two decades have been remarkable for innovations in microfluidic systems as well as automotive applications such as pressure sensors and accelerometers. MEMS flow sensing has emerged as a field of interest in microfluidics, with a variety of sensing methods being miniaturized, such as thermal anemometry, ultrasonic sensing and flow measurement based on the Coriolis effect. Coriolis sensing is particularly attractive since, unlike most other methods which provide volumetric flow information, Coriolis sensing is capable of providing a direct, true mass flow measurement. Because of this advantage, Coriolis flow sensing has …

Corrosion Studies On Alpha Tantalum And Beta Tantalum Coated Steel, Sung Min Maeng

Dissertations

Tantalum coating by sputtering, one form of physical vapor deposition (PVD), has been investigated as a replacement for chromium coatings on gun bores to protect them from erosion and corrosion due to its high ductility and high corrosion resistance in aggressive environments. When deposited as a film on steel substrates by sputtering, either α-Ta, β-Ta, or a mixture of both phases have been observed under varying deposition conditions. To evaluate corrosion behavior of Ta coatings, electrochemical impedance spectroscopy and potentiodynamic polarization were conducted as a function of coating thickness. The coating porosity was observed to decrease with increasing coating thickness …

Image Data Hiding, Zhicheng Ni

Dissertations

Image data hiding represents a class of processes used to embed data into cover images.

Robustness is one of the basic requirements for image data hiding. In the first part of this dissertation, 2D and 3D interleaving techniques associated with error-correction-code (ECC) are proposed to significantly improve the robustness of hidden data against burst errors.

In most cases, the cover image cannot be inverted back to the original image after the hidden data are retrieved. In this dissertation, one novel reversible (lossless) data hiding technique is then introduced. This technique is based on the histogram modification, which can embed a …

Bus Arrival Time Prediction Using Stochastic Time Series And Markov Chains, Rajat Rajbhandari

Dissertations

Public transit agencies rely on disseminating accurate and reliable information to transit users to achieve higher service quality and attract more users. With the development of new technologies, the concept of providing users with reliable information about bus arrival times at bus stops has become increasingly attractive. Due to the fact that bus operation parameters and variables are highly stochastic, modeling prediction of bus travel and arrival times has become one of the many challenging tasks.

Stochastic time series and delay propagation models to predict bus arrival times using historical information were developed. Markov models were developed to predict propagation …