Digital Commons Network^™

Removal And Recovery Of Fermentation-Produced Volatile Organic Compounds By A Novel Liquid Membrane-Based Pervaporation Technique, Atsawin Thongsukmak

Dissertations

Pervaporation is an energy -- efficient alternative to distillation for removing volatile organic compounds (VOCs) from water especially solvents from their dilute solutions in a fermentation broth. Liquid membranes have high selectivities for removing solvents from aqueous solutions compared with polymeric membranes or ceramic membranes; however liquid membranes have stability problems due to various losses. The loss of liquid membrane (LM) to the feed solution leads to toxicity for the organisms in a fermentation broth. A new liquid membrane based pervaporation technique has been developed to achieve high selectivity, ensure stability and prevent contamination of the fermentation broth. Trioctylamine (TOA) …

Vector Support For Multicore Processors With Major Emphasis On Configurable Multiprocessors, Hongyan Yang

Dissertations

It recently became increasingly difficult to build higher speed uniprocessor chips because of performance degradation and high power consumption. The quadratically increasing circuit complexity forbade the exploration of more instruction-level parallelism (JLP). To continue raising the performance, processor designers then focused on thread-level parallelism (TLP) to realize a new architecture design paradigm. Multicore processor design is the result of this trend. It has proven quite capable in performance increase and provides new opportunities in power management and system scalability. But current multicore processors do not provide powerful vector architecture support which could yield significant speedups for array operations while maintaining …

The Impact Of Cultural Differences In Temporal Perception On Global Software Development Teams, Richard William Egan

Dissertations

This dissertation investigated the impact of cultural differences in temporal perception on globally dispersed software development teams. Literature and anecdotal evidence suggest that these temporal differences affect individual communication quality, which in turn will affect individual satisfaction and trust within global teams. Additionally, the temporal dispersion of the team was expected to affect an individual's sense of temporal disruption which, in turn, was expected to affect individual satisfaction and trust. Differences in temporal perception were expected to moderate this impact on perceived temporal disruption. A Fortune 100 Company that carried out software testing in Ireland, the United States, China and …

The 2002 No Child Left Behind Act (Nclb), The Amended 2004 Individuals With Disabilities Educational Act (Idea), And Promoting The American Democratic Ideals Of Equity And Access, Bambi Rene' Bethel-Leitschuh

Dissertations

Abstract There is a long history relative to the purpose of American public education. Since at least the Founders, in particular Thomas Jefferson, the purpose of public education has been to prepare children to assume the primary political office, that of citizen. The reasoning was that for a democracy to endure citizens would have to make political judgments relative to both preserving the democracy and furthering democratic ideals including equity and access to the ?good life.? This educational philosophy took root more firmly during the 19th century with the advancement of the Common School. The twentieth century saw the dramatic …

An Analysis Of Mer1 Function During Meiotic Splicing Regulation In Saccharomyces Cerevisiae, Frederick William Scherrer

Dissertations

The transition from mitosis to meiosis in the yeast Saccharomyces cerevisiae requires a significant change to gene expression profiles. Regulation of pre-messenger RNA splicing patterns during meiosis assists in this transition by fine tuning expression of essential meiotic genes. Produced only during meiosis, Mer1p is linked to the splicing of at least three mRNAs: MER2, MER3, and AMA1. Previous evidence suggests that Mer1p activates splicing by directly recruiting snRNPs or stabilizing intermediate splicing complexes formed on pre-mRNA that contains an intronic Mer1p enhancer element. However, some splicing factors, especially accessory/non-snRNP factors, have critical roles in retaining unspliced pre-mRNAs in the …

Perceptions Of Sources Of Pressure And Reasons For Dismissals Of Mississippi High School Head Coaches, Michael Keith Pigott

Dissertations

The coaching profession is like a roller coaster ride. A person pays to get on the ride, sacrifices their life, enjoys the highs, and survives the lows. It is a job filled with long hours, stressful days, sacrifices of health and family, and moments of adrenaline rushes that make an individual want to stay in this profession forever.

The primary focus of this study was to identify the perceived sources of pressure on high school head coaches in the state of Mississippi. This study provides feedback regarding reasons for coaching dismissals and perceived sources of pressure. Two hundred and thirty …

Keeping The Faith: The Public Library's Commitment To Adult Education, 1950-2006, Brenda Weeks Coleman

Dissertations

This study examines the extent to which the conception and implementation of the public library's educational commitment to adults changed between 1950 and 2006 within the context of the institutional development of the public library and the influences exerted by internal and external forces such as philanthropic organizations, the federal government, the American Library Association, research, the public library planning process, the nontraditional education movement, and changes in public library ideology. Philanthropic organizations such as the Carnegie Corporation and the Ford Foundation's Fund for Adult Education played pivotal roles in the development of the library's liberal adult education programming in …

The Rhetorical Strategies Of Pregnancy Support Centers Including The Visual Rhetoric Of Fetal Ultrasound Technology, Raymond Kyle Jones

Dissertations

This study examined the rhetorical strategies, including verbal and visual rhetoric, of pregnancy support centers that provide clients with fetal ultrasounds to persuade those who may be considering abortion as a means of resolving their unplanned pregnancy to carry to term. Qualitative data were gathered from 12 interviews of directors and ultrasound personnel from 7 states as well as from television advertisements and printed material. Eighteen research questions investigating the rhetorical transactions between centers and clients were answered. Rhetorical analyses were performed on the verbal and visual messages used in client interactions.

The grounded theory approach of inquiry resulted in …

The Associated Colleges Of The South: A Case Study Chronicling Program Development At The Consortium And The Significance Of Consortium Membership Through The Experiences Of Presidents Of Member Institutions, Todd Spencer Rose

Dissertations

The Associated Colleges of the South is a consortium of liberal arts colleges founded in 1991. The consortium serves as a third-party agency to further the collective interests of the member institutions. Since its founding in 1991 and original membership of nine institutions, the consortium has grown to 16 member institutions. This research reviews literature relevant to the history and organization of voluntary consortia in the United States, the history of liberal arts colleges and the challenges that are faced by these institutions, and recent technology and how it affects higher education. In addition, the history of the consortia and …

Adult Education Principles In A Teacher Mentoring Program: A Grounded Theory, Debra Jean Winans

Dissertations

A qualitative study using grounded theory was conducted to determine the use of adult education principles in a school mentoring program. The study was conducted in a middle school in rural South Georgia during the 2006-2007 school year. Data were collected through face-to-face interviews with 25 participants: 11 proteges, nine mentors, and 5 mentor program coordinators. Insights into the dynamics of mentoring relationships and administration of the mentoring program were illustrated by stories of selected participants.

In this study, adult education principles were identified as (a) respect, (b) participation, (c) collaboration, (d) dialogue, (e) problem posing as a catalyst toward …

Attacking Ethos: The Rhetorical Use Of Uncertainty In The 2004 Election, Theron Allen Verdon

Dissertations

The rhetorical use of uncertainty in political communication (and other areas) has many implications. Uncertainty plays a major role in everyday life. Therefore, it likely plays a major role in political decision-making. Research has shown that uncertainty about a candidate affects a voter's voting preference. Uncertainty usually affects voter decisions. Uncertainty was a factor in the 2004 presidential election. The Bush-Cheney Campaign used uncertainty to corrupt the ethos of the Democratic nominee, Senator John Kerry. The Bush-Cheney campaign rhetorically manipulated information about Senator Kerry to create a perception of a leader whose actions revealed an unpredictable flip-flopper. A lack of …

Composition Programs And Practices In Sweden: Possibilities For Cross-Fertilization With The United States, Birgitta Linnea Sjoberg Ramsey

Dissertations

This dissertation contributes to several of the discussions that are taking place within the field of rhetoric and composition at this particular time: about the nature and definition of academic literacy; about the impact of a heterogeneous and multicultural student population on literacy practices in the academy; about the issue of academic socialization; and about the advantages and disadvantages of traditional first-year composition courses. Most importantly, this work is a contribution to cross-national research and an attempt to open up the field of composition to recognize and include voices other than the ones from North America. Even though the differences …

An Ethnography Study Of Hiv Positive Midlife Black Women, Charlotte Stoudmire Phd

Dissertations

Black women, ages 45 and older, are disproportionately affected by the HIV/AIDS epidemic. In 2001, Black women comprised 11% of all older women in the United States; however, they accounted for more than 50% of AIDS cases and more than 65% of HIV cases (Winningham et al., 2004). The literature review reflected little research specifically looking at the reason(s) for the increase in HIV in Black women, ages 45 to 60. Furthermore, few research studies focused on HIV patient health beliefs and their experiences in living with HIV. This study was conducted with an ethnography research method coupled with the …

In Vitro And In Vivo Techniques For Screening New Natural Product-Based Fungicides For Control Of Strawberry Anthracnose, Maritza Abril

Dissertations

Seven plant pathogenic fungi (Botrytis cinerea, Colletotrichum acutatum, C. fragariae, C. gloeosporioides, Fusarium oxysporum, Phomopsis obscurans, and P. viticola) valuable in screening fungicide efficacy were tested. Optimal and reproducible conditions for germination of these selected fungi were established by incorporating Roswell Park Memorial Institute 1640 (RPMI) as a medium of known composition and washing conidia to remove innate germination inhibitors. This step reduced average fungal germination times between 3.5 h and 21.2 h. The natural product-based fungicide, sampangine, seven sampangine analogs (4-bromo-sampangine, 4-methoxysampangine, benzo[4,5]sampangine, liriodenine Mel AMC-XIII-103, onychine, cryptolepine, and liriodenine CDH-II-37), plus seven conventional fungicides (benomyl, captan, cyprodinil, fenbuconazole, …

E-Coaching In Organizations: A Study Of Features, Practices, And Determinants Of Use, Rebecca Vaughan Frazee Edd

Dissertations

Employee development in organizations is moving away from classroom instruction to more individualized, flexible forms of just-in-time learning and support, such as e-coaching. E-coaching, conducted partially or entirely at a distance, offers convenience, cost-savings, efficiency, and improved access to people and resources. However, research on e-coaching for work-related purposes is limited. This descriptive and exploratory study used mixed methods to examine e-coaching extent, technologies and practices, and factors that influence deployment and success in organizations. A web-based survey gathered opinions from over two hundred workforce learning and performance professionals. Semi-structured interviews gathered critical incidents from twenty e-coaches. The researcher used …

School Web Sites Within The Educational Marketplace: A Case Study Investigating The Parents As Engaged Consumer-Users, Claudia Jane Beeman Edd

Dissertations

Schools -- like their corporate counterparts -- recognize the many advantages that the Internet affords. Today's schools vie for students, and thus use the web to market their services and showcase their management team (administrators, teachers, staff) and academic accomplishments. In a sense, then, web sites are the public face of education; those that are well-designed and multi-featured can enhance a district's public image and create the perception of excellence and competence. This case study explores how one suburban, K-8 school district approaches web site development, specifically, the process by which decisions about design, development, and maintenance are made (and …

Asian American Children's Literature: A Qualitative Study Of Cultural Authenticity, Virginia S. Loh Edd

Dissertations

The purpose of this study was to systematically analyze Asian-American children's trade books in terms of their cultural authenticity and to examine the perceptions of producers (authors) and consumers (teachers) as related to the cultural authenticity of such books. I wanted to understand the role of Asian-American children's trade books in research and classroom practice and also to understand the perspectives and preconceptions of these producers and consumers. By conducting this qualitative study on the cultural authenticity of Asian-American children's trade books, I hoped to fill a gap in the current discourse knowledge which does not adequately include the Asian-American …

A Study To Determine Factors That Inhibit Compliance With Engaging In Recommended Papanicoaou Smear Screenings In African American Women, Valecia Gail Carter-Vaughn

Dissertations

Papanicolaou (Pap) smear screenings help to detect abnormal cervical cells in the cervix. African American women are usually diagnosed in the later stages of cervical cancer. The purpose of this study was to determine factors that inhibit compliance with Pap smear screening in African American women.

Ninety-three African American women ages 18 or older, attending an urban health clinic participated in this descriptive design study to answer three research questions: 1) What factors inhibit compliance with recommended Pap smear screening in African American women age 18 or older? 2) Is there a difference between participants who attended the mobile clinic …

Toward A Free Collegiate Press: An Analysis Of Influences That Can Lead To Censorship At College Newspapers, Shaniece Bell Bickham

Dissertations

The purpose of this research was to explore the impact that influences at the individual, organizational and societal levels had on content in college and university student newspapers. Specifically, this research examined the ways that influences at the three levels could lead to censorship of the student press. A quantitative study was conducted through the use of online survey research. Student editors, faculty advisers, and academic affairs administrators of journalism and mass communication programs that are recognized as being accredited by the Accrediting Council for Education in Journalism and Mass Communication (ACEJMC) were surveyed to gather information about the structure …

Reverse Recruitment: Activation Of Yeast Genes At The Nuclear Periphery, Terry Marvin Haley

Dissertations

The regulation of genes at the nuclear periphery is an evolutionarily conserved phenomenon in eukaryotes. The reverse-recruitment model of transcriptional activation postulates that genes are activated by moving to and contacting transcription machinery located at subnuclear structures. In Saccharomyces cerevisiae it has been reported that this platform for gene regulation may reside at the nuclear periphery. To test this hypothesis, I utilized a GFP-gene tagging technique, which uses LacI-GFP to visualize a tandem array of its DNA-binding sequence, to monitor localization ofSUC2 and GALL I found that both genes preferentially localized to the nuclear periphery when transcriptionally active. By developing …

The Design, Synthesis, And Controlled Polymerization Of Cationic And Zwitterionic Norbornene Derivatives, David Allen Rankin

Dissertations

Ring-opening metathesis polymerization (ROMP) has been exploited for the controlled polymerization of cationic and zwitterionic norbornene-based monomers and employed in the preparation of homo- and block-copolymer systems in homogeneous organic media without the use of post-polymerization modification or protecting group chemistries. Relying on previous knowledge of certain halogenated alcoholic organic solvents capable of solubilizing hydrophilic monomers, the first study, describes the synthesis and controlled polymerization of a series of new permanently cationic ammonium exo-7- oxanorbornene derivatives M31 via ROMP, with the first generation Grubbs catalyst 17, in a novel solvent mixture comprised of 1:1 vol/vol 2,2,2-trifluoroethanol (TFE)/methylene chloride (CH2CI2). This …

Synthesis And Characterization Of Polymeric Materials Derived From Multifunctional Alkyl A-Hydroxymethylacrylates, Jean-Francois Morizur

Dissertations

The research presented in this dissertation covers the investigation of new materials derived from alkyl a-hydroxymethylacrylates (RHMA). The first project exposed in Chapter II involves the synthesis, characterization of RHMA-based reactive surfactants and their successful incorporation in acrylic latexes. The amphiphilic monomers testify of a good copolymerization behavior with other acrylic monomers such as methyl methacrylate and butyl acrylate although their extensive bulkiness. They led to the formation of well-defined polymeric particles via a seeded emulsion polymerization process and permitted decreasing significantly the water sensitivity of the resulting films as compared to film incorporating conventional emulsifier such as sodium dodecyl …

Raft Synthesis Of Water-Soluble, Stimuli-Responsive Ab Diblock Copolymers, Ran Wang

Dissertations

A series of water-soluble, stimuli-responsive AB diblock copolymers were synthesized via the reversible addition-fragmentation chain transfer (RAFT) polymerization technique employing 2-(2- carboxyethylsulfanylthiocarbonylsulfanyl)propionic acid (CTA26) as the RAFT mediating agent.

First, a series of diacid functional trithiocarbonate chain transfer agents (CTA's) were synthesized and examined for their effectiveness as mediating agents in controlling the polymerization of «-butyl acrylate (nBA). Overall, CTA26 demonstrated good control in the homopolymerization of nBA with respect to the molecular weight and the molecular weight distribution, as well as its ability to form block copolymers with high reinitiating efficiency, and thus was chosen as the CTA for …

How Can Art Education Enhance The Content Subject Area In An Urban School Setting?, Lonnie Ford

Dissertations

Parents and educators have traditionally viewed it as mere "enrichment" rather than a viable and essential part of the school curriculum. To address this issue, professional groups such as the National Art Education Association (NAEA) have consistently advocated for the importance of art by framing it as another core subject area that should be valued as highly as science, math, social studies, and language arts. Unfortunately, such a stance ignores another critical argument for the value of art. When it is framed as a stand-alone core subject area, essential connections among art and the other disciplines are neglected.

In this …

Obesity Risk Knowledge, Self-Efficacy, And Physical Activity In Families Of Adolescents, Elaine M. Rutkowski Phd, Msn, Rn, Cns

Dissertations

There were no significant relationships found between parental obesity risk knowledge and physical activity in their children. nor between parent's self efficacy and their children's physical activity. In addition there was no significant relationship between the adolescents' obesity risk knowledge and their physical activity. There was, however, a statistically significant relationship between adolescent's self efficacy and physical activity. The result of the correlation between parent's self-efficacy and their level of physical activity was not significant but approached significance (p = .07) and may be identified as a trend. There was a statistically significant negative correlation between parents who describe their …

Legislative Program Evaluation Conducted By State Legislatures In The United States, John S. Risley

Dissertations

This study examines how U.S. state legislative staffs conduct evaluations. The study addresses the ubiquity of state legislative program evaluation (LPE) units, the standards those units follow, the recommendations that LPE reports proffer, and the quality of the reports on several criteria. The study also addresses the feasibility of using metaevaluation to evaluate a large number of reports using solely the information contained in the reports.

The study uses metaevaluation criteria developed by combining aspects of, primarily, the Generally Accepted Government Auditing Standards (GAGAS) for performance audits, the Joint Committee's Program Evaluation Standards (PES), and, secondarily, Scriven's Key Evaluation Checklist. …

A Proof Of Concept For Oppnets And Its Resource Utilization Techniques With Qos Constraints, Zill-E-Huma Kamal

Dissertations

The increased number of embedded devices/systems in our environment and the evolution of the internet as a service oriented network connote two things: the demand for ubiquitous computing, and, the abstraction of users as consumers and applications as services, as in Service Oriented Computing (SOC) and Web Service domains.

This Thesis studies Class 2 Opportunistic Networks, Oppnets--in short. Oppnets propagate dynamic interconnection of heterogeneous devices/networks/systems and the integration of their resources or services-such as computation, communication, sensing, actuation, and storage -irrespective of the discrepancies in hardware, software, protocols, or standards employed, to enable ubiquitous computing. The novelty of Oppnets …

This Journey Is Not For The Faint Of Heart: An Investigation Of Challenges Facing Transgender Individuals And Their Significant Others, Emily Lenning

Dissertations

This study investigates the challenges imposed on transgender individuals and their significant others as a result of the deviant labels that have been used to stigmatize non-traditional expressions of gender. Using webbased surveys and an on-line focus group, the themes of language and its limitations, psychological trauma, and social challenges are explored and analyzed using discourse analysis. With a total of 311 subjects, 254 transgender individuals and 57 significant others, this research challenges the utility of gendered language as it is currently constituted, addresses the importance of significant others in understanding the transgender experience, and identifies the various social, psychological …

New Teachers' Perceptions On Their Preparation, Rosemary Cleveland

Dissertations

In this study, I inquired into new public school teachers' perceptions of how well prepared they were during their first year of teaching to handle a range of classroom and discipline situations by examining what percentages of new teachers felt that they were well prepared in classroom management. I also investigated whether there were possible variations in those percentages based on teacher gender, teacher level, and the percentage of minority students enrolled in school. Furthermore, I examined the relationship between new teachers' perceptions on their preparation in classroom management and their job satisfaction as well as their commitment to the …

Propagation And Scattering Of Beam Waves In Vegetation Using Scalar Transport Theory, Michael Yu-Chi Wu

Dissertations

Vegetation is a very complex propagation medium, and multiple scattering effects play a significant role in the propagation of microwave and millimeter (mm)-wave signals through foliage. At frequencies above 1 GHz,both the coherent and incoherent field components have to be taken into account and vegetation has to be modeled as a random medium of discrete scatterers having a wide variety of sizes and shapes. Multiscattering can be studied effectively by using transport theory. In prior studies, theories have been developed for microwave and mm-wave propagation in vegetation using transport theory for continuous wave and pulsed signals. In this study, the …