Digital Commons Network^™

Spider Mediation Of Polychlorinated Biphenyl Transport And Transformation Across Riparian Ecotones, Diana Delach

All Dissertations

Polychlorinated biphenyls (PCBs) contaminate the sediment of the Twelvemile Creek / Lake Hartwell Superfund Site, and are known to be transported throughout the resident biota via trophic transport. Riparian spiders have recently become of interest because they are terrestrial organisms that have significant PCB exposures derived from aquatic sources. Many riparian spiders primarily consume insects emerging from contaminated aquatic systems, and these spiders can have a body burden as high as 2900 ng/g lipid. These emergent insects carry contaminants out of the river and into the riparian zone where they are captured by spiders, which effectively directs the contamination towards …

Building Social Infrastructure Through Public-Private Partnerships: The Case Of Student Housing In Public Higher Education, Bruce Cole

All Dissertations

Evaluations of Public-Private Partnership arrangements as alternatives to traditional government procurement methods for the delivery of public infrastructure projects have been anecdotal at best. This paper proposes a framework to evaluate a public university's infrastructure asset management performance and a specific measure based on a new concept of the elapsed time required for services to be delivered (i.e., Project Completion Time). The results suggest that the choice to use a public-private partnership as a project delivery method for student housing at a public university can dramatically shorten the overall schedule. This research will serve as the foundation for future quantitative …

Exploring Group Cohesion In A Higher Education Field Experience, Brian Malcarne

All Dissertations

The purpose of this study was to gain understanding into the experience of group cohesion for university students participating in an academic field experience. A mixed methods approach was used following a two-phase, sequential research design to help provide a more complete explanation of how group cohesion was impacted by the field experience. The sample consisted of 112 undergraduate students involved in a 3-day academic field experience. The initial quantitative phase gathered pre- and post-test data on group cohesion using the Group Environment Questionnaire (GEQ) modified for an academic context. Findings demonstrated significant positive change in the domain of social …

Phoneme Weighting And Energy-Based Weighting For Speaker Recognition, Eric Fang

All Dissertations

This dissertation focuses on determining specific vowel phonemes which work best for speaker identification and speaker verification, and also developing new algorithms to improve speaker identification accuracy. Results from the first part of our research indicate that the vowels /i/, /E/ and /u/ were the ones having the highest recognition scores for both the Gaussian mixture model (GMM) and vector quantization (VQ) methods (at most one classification error). For VQ, /i/, /I/, /e/, /E/ and /@/ had no classification errors. Persons speaking /E/, /o/ and /u/ have been verified well by both GMM and VQ methods in our experiments. For …

Evaluation Of A Practice Change To Improve Screening, Identification, And Management Of Patients With Prediabetes, Murrita C. Bolinger

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: The prevalence rate of type 2 diabetes among adults in West Virginia (WV) is 10.85, which ranks fourth in the United States in 2007. Furthermore, WV ranks as second highest state for diabetes related deaths in the nation. Prediabetes increases the risks for development of type 2 diabetes. Studies have supported lifestyle modification education for prediabetic adults in an effort to reduce progression to type 2 diabetes.;Objective: To evaluate the use of an EMR reminder to improve the screening, identifying, and documentation of treatment plans for patient at risk for prediabetes.;Methods: A provider focused education session was offered to …

Effects Of Video Feedback On Students' Performance Of A Back Handspring, Kristi A. Kiefer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Purpose: Video technology has become a viable resource for teachers and coaches as a method of providing feedback to students and athletes. Studies support the use of this strategy when applied to teaching adolescents and adults with a proficient skill base. To date little research has identified the use of video technology as a method of feedback in the skill acquisition of children at a novice level. The purpose of this study was to examine the effect of video feedback on the performance of a back handspring. Methods: A multiple-treatment reversal design within each participant with a counter balance was …

Mindfully Teaching In The Classroom: A Literature Review, Nicole J. Albrecht, Patricia M. Albrecht, Marc Cohen

Australian Journal of Teacher Education

The practice of mindfulness is being used with increased frequency in schools around the world. In the current literature review we outline some of the core concepts and practices associated with mindfulness and discuss studies analysing the process of mindfulness teacher training. Preliminary research in this emerging field suggests that mindfulness has the potential to improve classroom management, teacher-student relationships and instructional strategies. Mindfulness instructors recommend that before teachers can feel comfortable and effectively teach mindfulness in the classroom they need to embody and practice mindfulness in their own lives. It is proposed that in order to improve our knowledge …

Prospective Teachers' Comprehension Levels Of Special Relativity Theory And The Effect Of Writing For Learning On Achievement, Ali Yildiz

Australian Journal of Teacher Education

In the present study, the comprehension levels of special relativity theory in prospective teachers who take the Introduction to Modern Physics lesson in the faculty of education science teaching department and the effect of writing for learning on their achievement is researched. In the research, a control group pre-test post-test quasi-experimental research model was used. Research data were obtained by using open-ended questions prepared by the researcher. The lesson was conducted in the beginning by using the verbal-written explanation method. Then each student in the experimental group wrote a summary which clearly explains the special relativity theory for a high …

How Do Early Childhood Students Conceptualize Play-Based Curriculum?, Avis Ridgway, Gloria Quinones

Australian Journal of Teacher Education

The study’s purpose was to discover student understanding of play-based curriculum. Traditionally, play has been misunderstood in pedagogical terms, and was widely interpreted in our study. The Early Years Learning Framework suggests educator guidance in sustaining play is essential for learning and development. As teacher educators, we wanted to reflect on Play and Pedagogy (A new fourth year unit) that expected students to create a conceptual play model for use in practice. Twenty-six students volunteered de-identified assignments. From these, common conceptual elements were identified. We selected quotes from student’s work to support identified concepts and entered a methodology of dialogue …

A Professional Experience Learning Community For Pre-Service Secondary Mathematics Teachers, Michael S. Cavanagh, Thomas Garvey

Australian Journal of Teacher Education

This paper reports the development and implementation of a collaborative professional experience learning community for a group of nine pre-service secondary mathematics teachers. The pre-service teachers and their methods lecturer made 12 school visits over one academic year to a local secondary school. The pre-service teachers observed and co-taught problem-solving lessons in two Year 8 classes. They discussed the lessons with the teacher and the university lecturer, and later posted reflective comments to an online forum. Data from questionnaires, interviews, and reflections indicate that participation in the learning community helped pre-service teachers make stronger links between theory and practice, learn …

Exchanging Information Without Intellectual Property, Michael J. Burstein

Articles

Contracting over information is notoriously difficult. Nearly fifty years ago, Kenneth Arrow articulated a “fundamental paradox” that arises when two parties try to exchange information. To complete such a transaction, the buyer of information must be able to place a value on the information. But once the seller discloses the information, the buyer can take it without paying. The conventional solution to this disclosure paradox is intellectual property. If the information is protected by a patent or a copyright then the seller can disclose the information free in the knowledge that the buyer can be enjoined against making, using, or …

2010-2011 Veterans Law Update, Kathleen Dwyer, Alec Kast, Scott A. Sigmon, Andrew E. Tarne

Law Student Publications

Part I will cover updates related directly to veterans' benefits and rights. Part II will focus on updates to rules involving veterans' caregivers and healthcare facilities. Part III will cover proposed rules dealing with veterans' claims and insurance. Part IV will focus on rules and case law covering the VA's procedures and operating regulations.

Examining Pre-Service Teachers' Instructional Strategies For Technological Pedagogical Content Knowledge Via Video-Conferencing, Hsiu-Jen Cheng, Hong Zhan

Publications

This action research observes instructional strategies and appropriateness of the strategies that pre-service teachers have applied during their training based on the Technological Pedagogical Content Knowledge (TPACK) training model. Participants include 14 pre-service teachers who were enrolled in a Distance Education training course in Taiwan. During the course, pre-service teachers were trained to develop teaching skills based on the TPACK training model and applied their skills in video-conferencing teaching which involved 14 American students who were learning Mandarin Chinese as a Foreign Language (CFL) in an intermediate level course in the United States. Data were collected via screen recordings of …

Performance Of Athletic Cleated Shoes In The Sport Of Ultimate Frisbee., Andrew Johnson 1987-

Electronic Theses and Dissertations

Athletic cleated shoe failures are commonplace to competitive-level ultimate frisbee players. Currently, there are no athletic cleated shoes designed for the sport of ultimate frisbee; players generally choose between football or soccer cleated shoes in the hopes of finding a match between footwear designs for a different sport and the needs of their own sport. A focus group and subsequent survey were conducted and administered, respectively, to better understand the types of failures that occur, as well as the causes of these failures. Approximately 78% of failures experienced in ultimate frisbee are caused by the player executing a cut, or …

Fault-Tolerant Wireless Sensor Networks Using Evolutionary Games, Ricardo Villalon

Computer Science ETDs

This dissertation proposes an approach to creating robust communication systems in wireless sensor networks, inspired by biological and ecological systems, particularly by evolutionary game theory. In this approach, a virtual community of agents live inside the network nodes and carry out network functions. The agents use different strategies to execute their functions, and these strategies are tested and selected by playing evolutionary games. Over time, agents with the best strategies survive, while others die. The strategies and the game rules provide the network with an adaptive behavior that allows it to react to changes in environmental conditions by adapting and …

From The "War On Poverty" To Reagan's "New Right," What's In A Name? : The Symbolic Significance Of The "Welfare Queen" In Politics And Public Discourse., Kem Roper

Electronic Theses and Dissertations

This dissertation is a rhetorical analysis of the political discourse surrounding the role of poor African American women within the American social and political economy beginning in 1965 with Lyndon Johnson's War on Poverty initiatives and extending to the early 1980s with Ronald Reagan and the "religious right." I argue that an ideology of whiteness permeates both the Johnson and Reagan administrations even though each worked towards different ends. In Chapter 1, I begin by discussing how America's establishment as a capitalist society made it a nation ill-fitted for government-funded social programs. In particular, I discuss the impact of distinctions …

An Ethnographic Case Study Of A Deaf Workforce Collective, Peter Shane Butler

Graduate Theses and Dissertations

This ethnographic study seeks to increase our understanding of the individual and shared experiences of five members of a Deaf United States Postal Service (USPS) collective employment cohort in regards to their early learning experiences, how these experiences led to collective employment, and how the collective employment opportunity led them to establish a new Strong Deaf Community in Houston. The data collected through semi structured interviews will be used to increase our understanding about how Strong Deaf Communities form, and what purpose they serve for grassroots members.

This study also seeks to shed light on why it is critical for …

Trait Differences In Gender In Technology Use And Study Habits Of Rural Community College Students, Phillip Marc Wilson

Graduate Theses and Dissertations

The purpose for conducting the study was to explore the trait differences by gender of the study habits and technology use patterns of rural community college students. Significant research and data presently exists at the university level specific to study habits and technology use, but little research had been conducted targeting those topics in a rural community college setting.

The following questions guided the research:

1. What were the study habits of rural community college students?

2. How did rural community college students use technology?

3. Were there significant differences, by gender, in the study habits of rural community college …

Witch Hazel Advent, The Story Of An Ozark Poet, Sarah Moore Chyrchel

Graduate Theses and Dissertations

The goal of this Master's thesis project was to document the life of my maternal step-grandfather, John Ross Rule, in a visually compelling manner. Using equipment provided by the Lemke Department of Journalism at the University of Arkansas, I shot and edited a half hour long documentary film comprised of interviews and footage of John at his home near Winslow, Arkansas. John is a talented poet, and segments of his poetry are woven throughout the film.

The inspiration for this project is deeply rooted in place: the remote farmstead in the Boston Mountains of northwestern Arkansas that my grandparents called …

Predictability Of Food And Wine Pairing Using A Sensory Approach, Rebeckah L. Koone

Graduate Theses and Dissertations

The purpose of this study was to explore significant differences in perception of match for a variety of food and wine styles; evaluate the impacts of wine sweetness level, wine acidity level, and wine tannin level on perception of match; and to investigate the impact of food and wine expertise on perceived level of match. A field research design was used to explore expert recommendations of food and wine combinations to obtain broader feedback on consumer perceptions. The population consisted of a convenience sample of 248 students enrolled in a continuing education course in food and wine pairing at George …

Investigating The Sensitivity Of Goodness-Of-Fit Indices To Detect Measurement Invariance In The Bifactor Model, Jam Khojasteh

Graduate Theses and Dissertations

A Monte Carlo simulation study was conducted to evaluate the sensitivities of five commonly used goodness-of-fit indices to detect metric invariance properties of the bifactor model. The fit indices that performed the best in terms of power were Gamma and Mc. In addition, Gamma, Mc, CFI, and RMSEA all held Type I error to a minimum. However, only Gamma and CFI are recommended to use in the bifactor model because the other GOF indices have cutoff values that are too large. For Gamma and CFI values of -.026 to -.045 and -.004 to -.009, respectively indicate a lack of metric …

The Academic Effects Of Learning Styles On Esl (English As A Second Language) Students In Intensive English Language Centers, Baderaddin Mahmood Yassin

Graduate Theses and Dissertations

This study investigated the learning styles of ESL students (students who learn English as a second language). The focus in this study was on the ESL Arab Gulf (Saudi Arabia, Oman, Kuwait, and United Arab Emirates) students who study English as a second language in Intensive English Language Centers (IELCs) in the United States. The study explored the ESL Arab Gulf students' learning style preference and how they are affected by different variables such as cultural background, gender, and language level in IELCs. ESL Arab Gulf students were administered the VARK Learning Styles questionnaire. It measures several sensory types of …

Master Principals' Perceptions Of The Impact Of The Arkansas Leadership Academy's Master Principal Program On Leadership Practices, School Cultures And Student Achievement, Diana Peer

Graduate Theses and Dissertations

A qualitative dissertation study was conducted to examine the impact of the Arkansas Leadership Academy's Master Principal Program through the perspective of those who have completed the entire program and attained designation as a Master Principal. A logic model for the Master Principal Program offered a context for the study. A review of relevant literature provided the identification of gaps in the research which included limited findings for a program comparable to the Master Principal Program. Research methods for this phenomenological study were explained. The research sample included Master Principals, as of 2011. Interviews and a focus group using collaborative …

Topics On Light-Emitting-Diode Driver Research, Jaber Hasan

Graduate Theses and Dissertations

In this dissertation, light-emitting-diode (LED) drivers are investigated for efficiency issues related to driving Red-Green-Blue (RGB) pixels and multiple LED strings in parallel. A high-efficiency digitally controlled RGB LED driver was designed for driving a 3x3 RGB LED display panel. A multiplexer was used to sense the voltage drop across the current controllers. This driver maintained a minimum drive voltage across the RGB LED pixels required to keep it in regulation leading to a reduction of unwanted power losses in the RGB LED pixels by selecting the minimum drop across the current-controllers as the reference voltage of the digital controller. …

Effect Of Body Size And Exercise On Mood State, Alexandra Lachance

Graduate Theses and Dissertations

Exercising in the presence of nature (i.e., "green exercise"), has been shown to heighten the physiological and mental benefits of traditional exercise on non-obese individuals. The effects of green exercise on obese individuals are unknown. It is hypothesized that green exercise is more beneficial for obese (greater positive improvements in mental health scores), compared to non-obese individuals. For example, the benefits of green exercise could help lower feelings of depression, improve mood and self-esteem to increase the propensity of obese individuals to meet exercise recommendations. Accordingly, this study investigated the physiological and psychological effects of green exercise on 12 obese …

Pre- And Post- Wage Differences Of Trade Adjustment Assistance Job Training Participants In Arkansas, Kimberley Hall Gordon

Graduate Theses and Dissertations

A number of costs are associated with the implementation of trade agreements not the least of which is the cost to the American workforce. The information age ushered in an era of globalization unlike anything the world economy had experienced before. As countries raced forward to dominate emerging markets and grow market share, millions of American workers were left in the wake. A remedy to the plight of the dislocated worker was found in trade adjustment assistance, specifically in job training benefits.

This study examined the wage differences experienced by Trade Adjustment Assistance (TAA) job training participants served through the …

Female Academic Department Chairs At A Public, Very High Research Activity University: Exploring Their Career Pathways To Success, Tamara Marcelle St.Marthe

Graduate Theses and Dissertations

The advancement of women into academic leadership remains a problem facing public, high-research activity universities. While there are more women who are qualified to assume the position of department chair in research institutions today than there were 30 years ago, women still lag behind their male counterparts in holding these academic leadership roles. The purpose of this study was to examine the personal and professional career experiences of women department chairs in a public, very high research activity institution, and to provide advice to women faculty seeking to become a department chair in the future. The department chair is among …

Documentation And Control Of Acetolactate Synthase-Resistant Barnyardgrass (Echinochloa Crus-Galli) In Arkansas Rice, Michael Joshua Wilson

Graduate Theses and Dissertations

Barnyardgrass, the most problematic grass weed of Arkansas rice, was found resistant to propanil in 1990, and since then, it has evolved resistance to quinclorac and clomazone. Barnyardgrass is now believed to have evolved resistance to acetolactate synthase (ALS)-inhibiting herbicides. The goal of this research was to confirm and determine the level of resistance of the putative resistant biotype to the ALS-inhibiting herbicides imazethapyr, bispyribac, and penoxsulam and to develop herbicide programs for controlling ALS-, propanil-, quinclorac-, and clomazone-resistant barnyardgrass. The lethal dose needed to kill 50% of the putative ALS-resistant plants was higher than that of the susceptible biotype …

Preparedness To Implement Wellness Strategies: Perceptions Of School Counselors, Tena Burnett

Graduate Theses and Dissertations

The purpose of this study is to survey school counselors to determine their knowledge and perceived preparedness to implement wellness strategies in school counseling programs. Wellness plans are a requirement for thousands of public school districts in the United States. There are no established standards for the training of school counselors in the area of wellness. School counselors are in a unique position to positively impact students through the use of wellness programs and strategies. School counselors from a mid-south state (N = 156) completed an electronic survey to measure how they implement wellness strategies and their perceived preparedness in …

Leadership Training Program For Shared Leadership Based On Super Leadership At Cheo-Eum Korean Presbyterian Church : A Study Of Christian Leadership, Houng Jin Youn

ATS Dissertations

No abstract provided.