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Thermal Treatment Of Organic Contaminated Solids And Waste : Experiment, Model And Mass Balance, Hsien-Tsung Chern

Dissertations

A number of processes can be used to remediate contaminated soils. The thermal technologies for remediation of contaminated soils are summarized in this study. Each of these treatment process along with their system components are identified and described. Waste applicability is included for each treatment technology. A detailed list of feasible treatment processes is presented with descriptions of site demonstration results to aid ill selection of a given process. Technology status is summarized to provide current information on the processes.

Energy components are discussed for cost requirement and safety considerations in thermal treatment applications. It is determined that the heat …

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 …

Catalytic Reduction Of Nitric Oxide By Solid Carbonaceous Material Under Lean Condition, Shan Xiao

Dissertations

The reactions of O₂, NO_x and soot from Diesel exhaust over Cu containing catalysts can significantly reduce soot and NO_x emissions while producing N₂ and CO₂. The author has evaluated the performance of Cu ion exchanged ZSM-5 and Cu adsorbed on Granulated Activated Carbon (Cu-GAC) using GAC as a surrogate for soot in a packed bed reactor. CO, formed primarily by the oxidation of GAC with O₂, appears to be a stable intermediate in the reduction of NO. With experimental parameters chosen to simulate Diesel exhaust conditions, Cu-GAC is much more …

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 …

Job Satisfaction And Leadership Style: A Study Of Michigan High School Principals, David A. Barry

Dissertations

Given the magnitude of importance in the role of the school principal, it is important to understand some of the job satisfaction factors related to the retention of current school principals particularly as it relates to leadership style. This study focuses on the retention of current principals by analyzing the job satisfaction of Michigan high school principals and examining its relationship with the principal’s leadership style. This study incorporates correlation research methods and survey procedures which include a self-administered questionnaire by the principal. The subjects for this study were randomly selected from the target population of all Michigan public high …

Teachers' Perceptions Of School Safety, Safety-Based Changes, And Their Resultant Impact On School Climate: A Case Study, Laura L. Finley

Dissertations

In the last decade, several high-profile shootings in suburban school districts have drawn attention to the issue of school-based violence. Consequently, schools all over have responded in many ways. The literature reveals that many suburban and rural schools have adopted the same measures as have urban districts, despite the fact that their discipline and violence problems are qualitatively different. These responses have generally been punitive and technological in nature, rather than curricular or structural reforms. This has included institution of metal detectors, more restrictive student dress codes, zero tolerance laws and others. Some, though, have suggested that these responses may …

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.

A New Type Of Particle Detector For Nuclear Scattering Experiments, Philip Ugorowski

Dissertations

A new detector was needed for counting recoil protons resulting from proton-proton (pp) elastic scattering during pion production experiments by the Polarized Internal Target Experiments (PINTEX) group at Indiana University Cyclotron Facility (IUCF). The previous silicon detectors were only usable forincoming protons up to 9 MeV, and a stopping power of at least 40 MeV was needed. In addition, the detector had to operate in nanotorr vacuum, and near strong varying magnetic fields, ruling out standard organic plastic scintillators and photomultiplier tubes. We needed to find the most suitable inorganic scintillator and another method of detecting the photons produced when …

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 …

The Link Between Smoking And Body Weight Among Adolescents, Tracey Barnett

Dissertations

Trends in smoking rates among adolescents indicate that white females generally smoke more than their adolescent counterparts, the only substance in which this occurs. Another trend in which white females far outnumber any other adolescent group is eating disorders. This study was conducted to assess the relationship between cigarette smoking and perception of weight among adolescents. A logistic regression model was constructed to test the relationship using the Adolescent Health Public Dataset. For females, there was a link between cigarette smoking and perception of overweight which was not found among the males. Similarly, white females had a significantly higher rate …

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 …

Nonlinear Interfacial Stability Of Core-Annular Film Flows In The Presence Of Surfactants, Said A. Kas-Danouche

Dissertations

This work is an analytical and computational study of the nonlinear interfacial instabilities found in core-annular flows in the presence of surfactants. Core-annular flows arise when two immiscible fluids (for example water and oil) are caused to flow in a pipe under the action of ail axial pressure gradient. In one typical type of flow regime, the fluids arrange themselves so that the less viscous (e.g. water) lies in the region of high shear near the pipe wall, with the more viscous fluid occupying the core region. Tech nologically, this arrangement provides an advantage since the highly viscous fluid is …

Two-Dimensional Reflectivity Polarization Elastometry Imaging Techniques (Piet) Of Soft Tissue, Hee Chuan Lim

Dissertations

A non-invasive polarized light reflection measurement method to measure the stretch of soft tissue, such as skin, is described. The technique utilizes changes in the reflectivity of polarized light intensity as a monitor of skin stretch. Measurements on in-vitro pigskin and invivo human skin show that the reflectivity of polarized light intensity increases linearly with stretch over a range. The changes in diffusive reflectivity properties of skin result from the alterations that take place in the roughness across the thickness of the skin layers due to stretch. Conceptually, as the roughness of a layer decreases with stretch, a smoother reflecting …

Experimental Studies Of Wave Propagation In Three-Dimensional Photonic Crystals, John M. Tobias

Dissertations

Photonic crystals were proposed fifteen years ago. Propagation is selectively prevented through these crystals resulting in a photonic band gap, that is, a frequency region where light cannot propagate. These frequency bands are analogous to electronic band gaps in solid-state crystals.

The optical properties of the photonic crystal in regions near the band gap remain relatively unexplored. Yet, there is significant evidence to suggest that this avenue of investigation can provide useful optical and microwave applications. Numerical studies have predicted that the effective permittivity near the photonic band gap approaches zero and becomes negative. Selfcollimation of the propagating beam and …

Development Of Icejet-Based Surface Processing Technology, Dimitri V. Shishkin

Dissertations

The objective of the proposed work is to acquire knowledge needed for the development and deployment of manufacturing processes utilizing the enormous technological potential of water ice. Material removal by blasting with ice media such as particles, pellets and slugs was investigated. The ice media was accelerated by entrainment in a fluid stream (air, steam, liquid water, supercritical C0₂), impact of rotating blades, fluid expansion, etc. The ice-airjet has to replace sand blasting and the ice-waterjet has to replace the abrasive waterjet. Based on these results, technical approaches for surface processing and machining will be improved. A primary …

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 …

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 …

Documenting Lines Of Communication Between School Personnel And Physicians For Medication Evaluation Purposes For Students With Adhd, Pamela M. Radford

Dissertations

The purpose of this study was to document current and desired lines of communication between school personnel and physicians for the purpose of making medication decisions for students with ADHD. School-physician communication practices-were assessed utilizing a national survey of primary care physicians who are members o f the American Medical Association (AMA) and school psychologists who are members of the National Association of School Psychologists (NASP). Specific information exchange practices that were assessed included: (a) on what student characteristics is information collected (e.g., academic performance, disruptive behavior, social interactions), (b) how school-based information is collected (e.g., direct observations, rating scales), …

Simultaneous Removal Of Ortho-Dichlorobenzene And Ethanol Vapors In A Biotrickling Filter : Experimental Results And Process Modeling, Suchismita Bhattacharya

Dissertations

This study investigated the possibility of simultaneous removal of vapors of dissimilar volatile organic compounds from air streams in a biotrickling filter (BTF). Using a rricrobial consortium known to utilize ortho-dichlorobenzene (o-DCB) as sole carbon and energy source, a culture was developed on o-DCB/ethanol mixtures and a BTF unit was developed and operated with air streams carrying o-DCB and ethanol vapors. Simultaneous removal of the two compounds was observed in experiments that span a period of over three years.

Experiments were performed at air residence times ranging from 4 to 6.5 min, liquid flow rates from 3.6 to 9 Lh …

Development Of Analytical Systems And Monitoring Of Vocs Emissions During Polymer Processing, Qin Xiang

Dissertations

A method using direct flame ionization detector (FID) measurement was developed to study total volatile organic compounds (VOCs) emissions during thermal degradation of polymers. This was used to estimate organic emissions from both virgin polymer resins and commingled plastics. The effects of process parameters, i. e., temperature, heating rate and residence time, were also studied. Significant VOCs emissions were observed at normal processing temperatures, particularly from recycled polymers. Each polymer showed a distinct evolution pattern during its thermal degradation. Kinetics of VOCs emissions were also studied using a non-isothermal technique. The kinetic parameters were in agreement with data from the …

Elementary, Pressure Dependent Model For Combustion Of C1, C2 And Nitrogen Containing Hydrocarbons : Operation Of A Pilot Scale Incinerator And Model Comparison, Chad Sheng

Dissertations

A 140000 BTU/hr pilot scale incinerator has been constructed, tested and run; and an online sampling train capable of taking in situ data has been established. The continuous on-line analytical instruments include a CO analyzer, an NO/NOx analyzer and an 02 analyzer. In addition, two gas chromatographs with flame ionization detector are used to determine CH4, C2H2 + C2H4 and total hydrocarbon concentrations. Typical operating conditions are at an average 02 concentration of 6 - 8 %. The NO concentration ranged from 100 - 200 ppm. Approximately I ppm of CH.4 is also present at steady state operations.

The kinetic …

The Relationships Between Attitude, Motivation, Anxiety, And Proficiency In English As A Second Language Of First-Year University Students In Puerto Rico, Carmen Mercedes Cortés

Dissertations

Purpose of the study. The purpose of this study was to determine the attitudes, motivation, and anxiety levels of first-year university students toward the learning and use of English as a second language. The study also examined the nature of the relationships between attitudes, motivation and anxiety, and English proficiency asmeasured by the College Entrance Examination Board.

Method. A Spanish version of The Attitudes/Motivation Test Battery (Gardner, 1985a), "Espejo de Actitudes: Aprendizaje del Inglés como Segundo Idioma en Puerto Rico," was administered to first-year college students at the University of Puerto Rico, Mayagüez Campus. These students came from various …

A Descriptive Case Study : The Implementation Of A Field-Based Master's Program, Jeanne Renita Grant

Dissertations

Purpose of study. This study focuses on the implementation of the Field-based Master's Program at Midwestern Christian University. The three-step Adoption Change Model (Fullan, 1991) guided me through this innovation: (1) adoption, (2) implementation, and (3) institutionalization of the program. This 2-year study describes the program's adoption and implementation stages. Institutionalization was not included as it takes 3-10 years to occur. Three research questions guided this study.

Research questions. (1) What did the teacher training in the uses of processes look like during the initial summer session of the Field-based Master's Program? (2) What did the transfer of training …

Student Perception Of The Attributes Of Peer Mediators: Implications For Program Improvement, Michelle Maree Bell

Dissertations

Problem. Limited research has been done regarding the magnitude of the attributes of peer mediators and its impact on elementary students. The purpose of this study was to examine fourth- through sixth-grade students' perception of the attributes of peer mediators at four rural elementary schools located in Pinconning, Michigan.

Method. This study examined the fourth- through sixth-grade students' perception of the attributes of peer mediators using a qualitative approach. The data collection procedures included using a purposive sample of 24 peer mediators in focus groups, as well as 74 peacemakers and 79 disputants who participated in a questionnaire. Questions …

The Psychosocial Determinants Of Middle- And High-School Violence: An Investigation Of The Perceptions Of Parents Of Children Suspended For Committing Violent Acts At School, Beverly Cameron

Dissertations

Problem. This study investigated parents' perceptions of the psychosocial determinants of middle- and high-school violence.

Method. Phase Four of the Predisposing, Reinforcing, and Enabling Constructs in Educational Diagnosis and Evaluation (PRECEDE) model, developed by Lawrence Green, was utilized to examine the perceptions of parents regarding the psychosocial determinants of middle- and high-school violence. Respondents were 191 parents whose children were suspended for school violence. One-way ANOVAs were used to analyze the influence ofgender, age, education, family structure, and income on school violence.

Results. Parents believed their children would solve problems using nonviolent means but they responded in a violent manner …

A Theoretical Proposal For Reaching Irreligious Czech People Through A Mission Revitalization Movement, Petr Činčala

Dissertations

The main goal of this study was to develop a theory of missionary outreach to unchurched Czech people which is biblically informed and culturally relevant. The theoretical proposal for a plausible model of churching in the Czech Republic builds on basic theological, philosophical, and conceptual assumptions (chapter 2), a societal analysis of the problem of Czech churching (chapter 3), and a review of the issues relating to the situation of existing churches and religious movements.

Based on Wallace’s theory of revitalization movements a model is developed for starting a missionary movement that aims at reaching today’s unchurched and seemingly irreligious …