Digital Commons Network^™

A Microfabricated Microconcentrator For Sensors And Chromatography, Minhee Kim

Dissertations

The detection and quantitative measurement of trace components is a challenging task. The key component in such an instrument is the concentration step where the analytes are accumulated before the analysis. In this research, simple and inexpensive processes for the microfabrication of microconcentrator that can be used with sensors and as an injector in GC were developed. Analytes are selectively concentrated in the microconcentrator. Rapid electrical heating of the microconcentrator releases the adsorbed species as a 66 concentration pulse", which serves as an injection for the detection system. The relatively small size of the microconcentrator allows it to be heated …

Remediation Of Chromium Contaminated Soils With Colloidal Silica, Netnapid Yossapol

Dissertations

The low-viscosity stabilizer, colloidal silica, is extensively used as a grouting material in the construction of grout curtains. It has low viscosity and is non-toxic, which is suitable for injection to stabilize fine-grained soils. It is also applied as a stabilizer in the in-situ treatment of hazardous waste. Once the colloidal silica solution is injected into contaminated soil, it moves through the pores inside the soil matrix, initiating the stabilization process. The viscosity of the colloidal silica mixture increases while it moves until solidifications. This process is called gelation and results in the creation of a gel barrier around contaminated …

Social Anxiety: Attentional Bias In Reaction To Emotional Faces Before And After Participation In A College Level Public Speaking Course, Scott Walter Maieritsch

Dissertations

This study was designed to examine the effectiveness of a semester-long public speaking course in reducing the self-reported levels of communication anxiety and social anxiety among college students enrolled in such a course. The current study also sought to replicate and extend a recent line of research that has demonstrated that highly socially anxious individuals show an attentional bias away from emotional faces under conditions of social-evaluative threat. The current study extended this line of research by conducting the same reaction time procedure with participants in a pretest/post-test design. The project was designed to determine if groups (rating high vs. …

An Analysis Of Student Progress In Beginning Flight Training: Performance Prediction, Performance Measurement, And Performance Improvement, Ryan Olson

Dissertations

The current project was designed to explore potential strategies for reducing the risk of accidents and incidents with beginning flight students (V = 28) by: (a) evaluating the CogScreen™ Aeromedical Edition (CogScreen-AE) test as a predictor of performance, (b) investigating patterns in student performance using expanded data collection procedures, including more extensive measurement of landings, and (c) evaluating the effects of early supplemental training on a personal computer-based aviation training device (PCATD). The experimental manipulation employed a matched pairs research design and exposed a treatment group (rt = 14) to six trials of “skill pattern” practice on a PCATD, with …

How Does It Mean? Literary Theory As Metacognitive Reading Strategy In The High School English Classroom, Lisa J. Schade

Dissertations

In the last two decades, serious scholarly attention has been paid both to theories of teaching reading and to theories of literary interpretation. These potentially related fields have been treated as separate, focused either on teaching reading in the elementary grades or on teaching interpretation to advanced college literature students. Until very recently the relevance of either reading theory or literary theory to middle school or high school pedagogy has remained unexamined. My research, as a reflective practitioner, addresses this important gap. I focus on the teaching of literary theory in the high school English classroom as a strategy to …

A Study Of Expert Problem-Solving In Qualitative Organic Analysis Using A Computer Simulation, Keith A. Schramm

Dissertations

A qualitative case study of eight doctoral level organic chemists from academia (6) and industry (2) solved eleven qualitative organic analysis problems using the Identification of Organic Compounds* software computer simulation. Think-aloud protocols were analyzed for content knowledge and strategic knowledge to account for expert performance. Each of the eleven qualitative organic analysis problems included a variety of functional groups and structures and was solved in a computer-simulated environment to allow for extensive problem-solving by the experts and to evaluate the simulation’s ability to model the problem-solving environment The data provided consisted of the typical instrumentation available to university undergraduate …

Family Structure And Attachment And Their Role In Reducing Delinquency In The African American Family, Kiesha Warren

Dissertations

The study uses data from the over sampling of African American youth (4,808) from the National Longitudinal Study of Adolescent Health to explore the relationship between family structure, attachment and their role in reducing delinquency. Using theelement of attachment from Hirschi’s (1969) social control theory, this study examines the historical development of the various family structures and the role attachment plays in reducing delinquency in those family structures. The study uses structural equation modeling to test this hypothesis. This study shows that when attachment is present regardless of the family structure delinquency will be reduced.

Why Religious People Believe What They Shouldn't: Explaining Theological Incorrectness In South Asia And America, D. Jason Slone

Dissertations

Cross-cultural descriptions of religious thought and behavior in South Asia and America show that people commonly hold ideas and perform actions that seem to be not only conceptually incoherent but also “theologically incorrect” by the standards of their own traditions. For example. South Asian Theravada Buddhists are taught that the historical Buddha is unavailable because he attained enlightenment and achieved parinirvana (“complete extinction”) and yet conceptually and ritually represent him as if he is present and available for petition. Similarly, American Protestants represent the Christian God as having absolute divine sovereignty and yet reveal confidence in an inner locus of …

The Structure Of The Leadership Construct: A Test Of Factorial Invariance Using Structural Equation Modeling, Liliana Rodriguez-Campos

Dissertations

Structural equation modeling (SEM) was used in this dissertation to investigate the factorial invariance (i.e., equivalence) of the leadership construct as perceived by different groups of people in education. Specifically, the author focuses on three groups (364 teachers, 419 principals, and 369 superintendents) from a statewide survey, where the central concern is whether components of the measurement model of leadership are invariant across those particular groups. In seeking evidence of multigroup invariance, the author was interested in finding the answer to the following research questions: (1) to what extent do some leadership factorial structures fit a group better than others? …

Substance Abuse Treatment: Substance Abuse Counselors' Belief Systems And How These Beliefs Impact Treatment, Ann Crabb

Dissertations

The treatment of substance abuse is an anomaly within the mental health field. Historically, the treatment of addicted people has relied more on the personal experiences of those who have recovered than empirical findings (Shaffer, 1987). The founding of Alcoholics Anonymous sparked the creation of a belief system regarding substance abuse and recovery that, despite contradictory research findings, remains strong today (McElrath, 1997). This study was conducted to explore the belief systems of both recovering and nonrecovering substance abuse counselors today to determine what their beliefs are, how these beliefs were formed, and whether their belief system has changed over …

Ideology Or Insanity? Media Presentation Of Ted Kaczynski And Tim Mcveigh, Matthew P. Sheptoski

Dissertations

This dissertation explores mainstream media presentation of two convicted murderers: Theodore J. Kaczynski, otherwise known as "The Unabomber," and Timothy J. McVeigh, found guilty of the 1995 destruction of the Murrah Federal Building in Oklahoma City, Oklahoma. More specifically, I analyze The New York Times's and Time's presentation of these two actors in order to assess whether their acts were attributed to political and ideological motivation or psychological abnormality and mental illness. Quantitative and qualitative findings indicate that Kaczynski's crimes were more likely to be attributed to psychological abnormality and mental illness, while McVeigh's crimes were more likely to be …

Integration Of Multiple Perspectives On Leadership: A Comparative Study Of Experienced And Novice Leaders, Rigoberto J. Rincones-Gomez

Dissertations

The purpose o f this study was to investigate a multiple-perspectives approach to educational leadership. Twelve superintendents from the state of Michigan participated in this study. A sampling strategy was used to differentiate six novices from six experienced superintendents. Interviews, thinking-aloud, and journals were used in order to capture information regarding superintendents’ approaches to leadership. The conceptual framework used in this study was defined by (a) a system of perspectives on leadership, and (b) the assumptions that lie beneath those perspectives, including the assumptions about the leader, follower, organization, and task. These two components turned into the two-level coding system …

The Relationship Between Financial Aid And Freshman Persistance At A Midwestern Liberal Arts College, Jack Phillip Powell

Dissertations

College student persistence has been one o f the most important topics discussed in higher education over the last 25 years. The consequences of student attrition from our colleges and universities are immense for the individual student and institutions alike. One of the purposes of student financial aid is to promote student persistence. The need for empirical research to assess whether financial aid is accomplishing this vital purpose is critical Research is particularly important given the significant shifts in policy brought on by the 1992 Reauthorization of the Higher Education Act. This study addressed two research questions. The first deals …

A Study Of The Effects Of Goal Conflict On Job Satisfaction In Auxiliary Enterprise Units Within Higher Education, Stephen M. Keizer

Dissertations

The role of goal conflict on job satisfaction within auxiliary enterprise units at Western Michigan University was the focus of this study. The continuing decline in state appropriations has caused state-funded colleges and universities to change their operational model in order to become more fiscally responsible. This change in operational focus has led to a shift in the balance between the goal of educating students and the goal of generating revenue. This shift creates goal conflict among many of the employees whose role it is to bolster the sagging operational budget. Conflict within job goals impacts on job satisfaction and …

A Study Of The Counseling Practices Of Wesleyan Pastors, Kurt A. Stevens

Dissertations

Little is known about the counseling practices of Wesleyan ministers. The primary goal of this study was to provide a detailed description of what pastoral counseling consists of for Wesleyan pastors. The study examined the most common and most troubling counseling issues, the extent to which pastors felt qualified and comfortable providing pastoral counseling, the ability of pastors to counsel parishioners presenting with various issues (e.g., divorce, death, abuse, parenting), the timing of referrals and to whom referred, the number of parishioners currently counseling, the location and time of counseling sessions, and the number of counseling courses taken and perceived …

Classroom Questioning Strategies As Indicators Of Inquiry Based Science Instruction, Linda Hale Goossen

Dissertations

Inquiry teaching often rests upon the assumption that through the use of questioning and response strategies, teachers can stimulate students to actively construct knowledge. Based on this hypothesis, middle-school science lessons were observed and questioning and response strategies were identified that are related to inquiry-based instruction.

Twenty-four science lessons were observed, videotaped, and ranked by inquiry characteristics other than questioning strategy. The video and audio portions of the recordings were analyzed to determine the student and teacher’s questioning and response strategies in each classroom. These strategies were then compared to teaching style, along a continuum from traditional to inquiry, to …

Factors Predicting Distress At Marital Therapy Onset, Joseph J.H. Horak

Dissertations

Higher levels of distress at marital therapy onset predict poorer treatment outcomes in several studies. This study selected nine variables to determine their ability to predict distress at marital therapy onset. The first two predictor variables, shame (measured by the Internalized Shame Scale; Cook, 2000) and expressive atmosphere in the family of origin (measured by the Family of Origin Expressive Atmosphere Scale; Yelsma, Hovestadt, Anderson, & Nilsson, 2000), were chosen from the literature and studies that considered these variables to be related to marital distress. The remaining seven sociodemographic predictor variables—(1) parental divorce as a child, (2) pregnancy before marriage, …

What Have They Told Us About Gangs? A Content Analysis Of Twentieth Century Texts On U.S. Gangs, Douglas Lee Gilbertson

Dissertations

Inspired by a scholarly desire to understand and explain things, formal theoretical explanations for the social problem of gangs have been around just about as long as gangs themselves. This is an inductive content analysis of the texts within twentieth century works explaining gangs. This study explores those explanations as social artifacts and analyzes the text within them in order to identify textual similarities. This is accomplished by consolidating codified text or words until typologies of abstract theoretical concepts are revealed. The purpose of this study is to identify probable causal factors for gang formation and gang joining behavior that …

Assessment Of The Discriminative Stimulus Effects Of (±)-3,4-Methylenedioxymethamphetamine (Mdma, "Ecstasy") And (+Lysergic Add Diethylamide (Lsd) In A Three-Lever Drug Discrimination Procedure, Amy K. Goodwin

Dissertations

(±)3,4-Methylenedioxymethamphetamine (MDMA) is a common drug of abuse known as "ecstasy." Currently, MDMA is classified into the traditional drug classes as both a "stimulant" and a "hallucinogen" because it is reported to share both subjective and physiological properties of both classes. MDMA is thought to produce its psychoactive effects by acting as both a serotonin and a dopamine agonist. However, the relative importance of the serotonin and dopamine neurotransmitter systems in mediating the stimulus properties of MDMA remains unclear.

The drug discrimination assay is used to classify drugs as "similar" or "dissimilar," as well as to examine underlying neurochemical changes …

The Adjustment Problems Of African Students At Western Michigan University, Apollos Bitrus Goyol

Dissertations

There are more international students enrolled in colleges and universities in the U.S. than in any other country as reported by the Institute of International Education. In the 2000/01 school year, the institute estimated that 547,867 international students were studying in the U.S. Most of these students, 302,058 (55%) came from countries in Asia; and 80,584 (14.7%) came from Europe. Latin America had 63,634 (11.6%); followed by the Middle East, with 36,858 (6.7%); Africa, with 34,217 (6.2%); North America, with 25,888 (4.7%), and Oceania, with 4,624 (.8%). Ten students were Stateless. As a response to the high number of international …

Theory And Design Of Mixed Lumped-Distributed Cross-Coupled Filters With Applications To Linear Phase Shifter And Tunable Filters, Sanghoon Shin

Dissertations

Using cross-coupled networks of a new concept, transmission zeros were efficiently located in the complex frequency-domain. With this approach, the group delay and attenuation slope of the circuit network can be controlled to get both sharp rejection characteristics and linear phase slopes. In order to achieve this performance, various types of combline filters are suggested. Various simulation tools (commercial linear circuit and E-M simulators), as well as the developed pole-zero locator program, were used to design a new class of cross-coupled networks. In particular, the polezero locator program can be used to extract an equivalent circuit of the topology that …

Analysis Of Costs And Delivery Intervals For Multiple-Release Software, High-Way Sun

Dissertations

Project managers of large software projects, and particularly those associated with Internet Business-to-Business (B2B) or Business-to-Customer (B2C) applications, are under pressure to capture market share by delivering reliable software with cost and timing constraints. An earlier delivery time may help the E-commerce software capture a larger market share. However, early delivery sometimes means lower quality. In addition, most of the time the scale of the software is so large that incremental multiple releases are warranted.

A Multiple-Release methodology has been developed to optimize the most efficient and effective delivery intervals of the various releases of software products, taking into consideration …

A Bi-Level Programming Approach For The Shipper-Carrier Network Problem, Ya Wang

Dissertations

The Stackelberg game betweenshippers and carriers in an intermodal network is formulated as a bi-levelprogram. In this network, shippers make production, consumption, androuting decisions while carriers make pricing and routing decisions.The oligopolistic carrier pricing and routing problem, which comprisesthe upper level of the bi-level program, is formulated either as a nonlinearconstrained optimization problem or as a variational inequality problem,depending on whether the oligopolistic carriers choose to collude orcompete with each other in their pricing decision. The shippers' decisionbehavior is defined by the spatial price equilibrium principle. Forthe spatial price equilibrium problem, which is the lower level of thebi-level program, a …

Collaborative Problem Solving And Program Development Model, Joanna Defranco-Tommarello

Dissertations

A model to enhance collaborative problem solving and program development is presented. The collaborative model is a detailed cognitive model that takes into consideration the cognitive and social activities that occur during collaborative problem solving and program development. The cognitive activities required for collaborative problem solving and program development are identified and integrated into a six-stage model. An extensive literature review in the associated fields is presented to show the need for the model described in this dissertation. In addition, a comprehensive study of tools to support collaboration during problem solving and program development was also performed as well as …

Genre Studies: Temporary Homogeneous Grouping To Improve Reading Or Merely Another Form Of Tracking?, Brenda Wright Campbell Edd

Dissertations

For the last fifty years, raising the achievement levels of students thought to be “at-risk” has proven to be one of the most difficult and vexing problems facing educators. Although many different strategies have been tried with varying levels of success, no single at-risk solution has emerged that both promotes significant achievement gains and helps to narrow the achievement gap between people of color and whites. This study examined the effectiveness of a particular district-wide literacy strategy in its first year that focused on literacy to educate students identified as “at-risk”. Specifically, this study used data gathered from two measures …

Role Perceptions Of School Nurses Who Work With Medically Fragile Students, Cay Chapman Casey Phd

Dissertations

In 1999, the Supreme Court ruled that school districts were financially responsible to provide related services including nursing services, to medically fragile students. This decision applied to children attending public schools who have complex health problems and are tracheostomy dependent. The purpose of this grounded theory study was to explore role perceptions of eighteen school nurses caring for these children in classrooms. Six dimensions emerged from the data: Promoting Family/Nurse Connections, Adapting the Environment, Claiming Authority, “Standing Out There”, Striking a Balance and Experiencing Success. Promoting Family/Nurse Connections emerged as the central perspective, essential to implementing a plan of care. …

Resilience: The Lived Experience Of Elderly Widowers Following The Death Of A Spouse, Dorothy Battersby Crummy Phd, Msn, Rn

Dissertations

Aged widowers are at risk for increased incidence of health problems and higher mortality rates following the death of a spouse. Mens' abilities for dealing with loss have been questioned, but little research has been done with this group. Surviving widowers provided significant insights illuminating the experience of resilience and providing relevant information regarding this population. Utilizing interpretive phenomenology, a methodology advocated by van Manen, in-depth interviews were conducted researching the lived experience of resilience among nineteen elderly widowers between 71 years and 100 years of age. Participants, identified by network sampling, lived independently and had survived the death of …

Development Of The Postpartum Smoking Questionnaire (Ppsq), Cynthia J. Gantt Phd, Msn, C-Fnp, Rn

Dissertations

Cigarette smoking is the leading preventable cause of death in the United States. Smoking also accounts for significant morbidity for others exposed to environmental tobacco smoke. Many women stop smoking during pregnancy. Most women relapse to smoking following delivery, yet postpartum smoking issues have received little attention. The purpose of this study was to develop and test an instrument, the Postpartum Smoking Questionnaire (PPSQ) using Ajzen's Theory of Planned Behavior. The belief-based items of the PPSR-Q were developed following content analysis of 35 individual, structured elicitation study interviews with postpartum women in the military healthcare system. Beliefs that prevented women …

Collaborative Leadership In Middle Schools And Teacher Job Satisfaction: A Search For Relationships, A. Greg Bowden Edd

Dissertations

This correlational study examined the relationship between the leadership practiced by middle school principals and the job satisfaction reported by their teachers. Data were collected from 10 middle school principals who completed a demographic survey and the Principal Leadership Survey-Self (PLS-S). Data were also collected from 183 teachers who completed a demographic survey, the Principal Leadership Survey-Other (PLS-O), the School Participant Empowerment Scale (SPES), and the Minnesota Satisfaction Questionnaire (MSQ). Sub scale scores from the PLS-O and the SPES were used to measure collaborative leadership. Telephone interviews were conducted with nine of the teachers who reported the highest degree of …

Ladies' Library Associations Of Michigan: Women, Reform, And Use Of Public Space, Sharon Carlson

Dissertations

This dissertation investigates the ladies' library associations in Southwestern Michigan from the middle nineteenth century through the early twentieth century to explore the impact of these organizations as agents of reform and in shaping public space. Ladies' library association records provide a major component of this study. Association records, consisting of constitutions, bylaws, minutes, treasurer records, book catalogs, yearbooks, and published reports yield valuable information to analyze and interpret the activities of ladies' library associations. Plat maps, panoramic maps, photographs, architectural drawings, and tax records offer evidence about the built environment and material culture of ladies' library associations. The actual …