Digital Commons Network^™

Family Policies And Institutional Satisfaction: An Intersectional Analysis Of Tenure-Track Faculty, Heather Lee Schneller

Graduate Theses and Dissertations

Gender and faculty career advancement have been examined with a focus on academic work environment, including faculty workloads, mentoring relationships, access to research networks, and work-life balance. Previous studies concerned with gender, employment, and care work only have considered child care. Additionally, the exploration of faculty and care work focused specifically on gender instead of examining the interaction of race and gender. To date, no study on academic work-life policies includes faculty perceptions of their importance and effectiveness nor has the faculty assessment of eldercare policy been examined in relation to career success.

Guided by an intersectional perspective, this study …

Stratigraphic Variations In The Carboniferous Section Across The Arkansas-Oklahoma State Line Arch, Tyler Dean Engelhardt

Graduate Theses and Dissertations

The State Line Arch is represented by a structural high that trends through the study area in a loose alignment with the Arkansas-Oklahoma state line. Evidence of the arch extending further to the north includes a structural high and stratigraphic variation at an outcrop on Highway 59 near Evansville Mountain in Crawford County, Arkansas. The exact timing of the formation of the arch remains undetermined, but upper Devonian thinning at the top of the arch indicates the structure is pre-Mississippian. The reason for the development of the arch is poorly understood, but evidence linking Mississippian-aged Waulsortian mounds to Precambrian Spavinaw …

Pulse Sharpening Effects Of Thin Film Ferroelectric Transmission Lines, Robert J. Sleezer

Graduate Theses and Dissertations

Advances in material science have resulted in the development of electrically nonlinear high dielectric thin film ferroelectrics, which have led to new opportunities for the creation of novel devices. This dissertation investigated one such device: a low voltage nonlinear transmission line (NLTL). A finite element simulation of ferroelectric transmission lines showed that NLTLs are capable of creating shockwaves. Additionally, if the losses are kept sufficiently low, it was shown that voltage gain should be possible. Furthermore, a method of accounting for material dispersion was developed. Results from simulations including material dispersion showed that temporal solitons might be possible from a …

Inquiry-Based Instruction In The Social Studies: Successes And Challenges, Crystal Maree Beshears

Graduate Theses and Dissertations

The purpose of this study was to investigate teachers' perceptions, understanding, and use of inquiry-based instruction in the Social studies, to assess the impact of inquiry-based units on instruction, to detail implementation successes and challenges reported by teachers when implementing inquiry-based instruction, and to provide recommendations for future efforts. Teachers' perceptions of teaching and learning, particularly their beliefs about inquiry-based instruction, changed during the study. Throughout the study, teachers' perceptions and beliefs about teaching Social studies had an impact on how they planned, implemented and reflected on inquiry-based instruction. Many of the teachers changed their perceptions and began regularly teaching …

A Comparison Of Student Success By Faculty Qualifications, Kristine A. Garner

Graduate Theses and Dissertations

Providing the best qualified faculty to ensure the most successful student outcomes is a priority in higher education. The use of adjunct faculty in colleges and universities is continually increasing, especially for lower level courses. Previous research has come to conflicting conclusions regarding the quality of adjunct faculty. Indicators of student success were compared between part-time instructors with professional doctoral degrees and full-time instructors with academic doctoral degrees. Results of statistical analyses of both a comparison of final grade distributions and knowledge of course content determined that there were no significant differences between two comparable groups of students in a …

Community Structure And Ecological Specialization In Plant-Ant Interactions, Paola Barriga

Graduate Theses and Dissertations

Positive associations among species have contributed to the maintenance of biodiversity. These interactions are typically studied in pairwise fashion where two interacting organisms are the focus. This dissertation uses network theory to analyze positive plant-ant associations in three Neotropical forests. Obligate plant-ant mutualisms were used, where plants host the ants in domatia and provide food bodies while the ants protect the plants and can feed them. A network approach was used to depict all obligate plant-ant interactions within a community. The main questions asked at the community level were: 1) Do network structure and levels of specialization change geographically and, …

What Is The Participant Learning Experience Like Using Youtube To Study A Foreign Language?, Yuan-Hsiang Lo

Graduate Theses and Dissertations

This research is to explore and understand participants' experience using YouTube to learn a foreign language. YouTube and learning has become more and more popular in the recent years. The finding of this research will be adding more understanding to the emerging body of knowledge of YouTube phenomenon. In this research, there are three interviews and two questionnaires. The interviews are conducted to find in-depth responses from participants; the questionnaires are used to inquire demographic and basic information about the participants. There are twelve themes found in this research. These themes reflect on the perceived experience using YouTube to learn …

Analytical Research Topics In Sport Management, Gi-Yong Koo

Graduate Theses and Dissertations

The field of sport management has grown tremendously as an academic discipline. Researchers have continuously discussed the scope and direction of research and the importance of the diversity of research design. There have been a significant number of studies examining the scope and direction of research over the past few decades such as: the lack of diversity in methodology; the lack of diversity in research focus; the lack of importance of power analysis; and the lack of diversity in topic areas. Embracing a variety of research designs is an absolutely necessary condition for the growth and credibility of sport management …

Computational Design Of The Electrical And Mechanical Performance Of Steerable Mems Antennas, Morgan Andrew Roddy

Graduate Theses and Dissertations

This thesis describes the origins, improvements, and variations of a broadband microwave antenna that can be beam-steered by a micro-electromechanical system (MEMS). The steerable MEMS antenna of this work was comprised of a planar antenna on top of a Silicon membrane. The membrane is etched to create a gimbal hinge structure and a platform which supported the antenna and gave it one or two degrees of freedom of rotation. The antennas presented were broadband and fed by a coplanar waveguide (CPW) transmission line which traversed the hinge structure. The antenna's orientation in space was designed to be changed through electrostatic …

Ant Tribe, Yan Zhao

Graduate Theses and Dissertations

"Ant Tribe" describes the post-80s generation university graduates who live together in poor conditions without Social security in communities around China's major metropolises. They dream of a better life in big cities but struggle with low-paying jobs. These struggling "elites" have become the fourth weak Social group, after peasants, migrant workers and unemployed people. The reason why these college graduates are compared to ants is that they are like ants: clever, hardworking, politically weak and living in groups.

The real world is always different from the ideal world of the "Ant Tribe" in China. They often lose their purposes in …

Inspired Living, Gongke Li

Graduate Theses and Dissertations

Inspired Living is a juxtaposition of old and new, contemplating the shift of values in contemporary China.

Patriotism used to be one of the key values in the Chinese people's minds, but those values have changed dramatically. Fewer people are thinking about or talking about patriotism, like sacrificing for the country or serving the people. In reality, getting rich and spending money to purchase all kinds of products, either absolute necessities or unnecessary luxuries, has become the key value of many Chinese people.

The images used in this project are all found and come from various sources, including books and …

Content Of Sexual Assault Prevention Programs: What Evidence Could Change College Women's Minds?, Abigail Lee Moser

Graduate Theses and Dissertations

Sexual assault is a serious health issue for college women. Unfortunately, the results of previous research revealed that intervention programs designed for women have been largely ineffective at changing women's attitudes, knowledge, and victimization concerning sexual assault. The purpose of the present investigation was to identify forms of persuasive evidence that women report as having changed their attitudes, knowledge, and behavior concerning sexual assault. Focus groups were used to identify common themes college women use to explain their understandings of these topics. These focus groups discussed how close family members impacted their behaviors concerning sexual assault, how they gained their …

Assessing Knowledge Acquisition Through Lecture And Cooperative Learning: Traditional And Non-Traditional Secondary Students In Agriculture, Beth Ann Jean Bills-Hunt

Graduate Theses and Dissertations

Currently, students entering secondary agricultural education programs have less knowledge and hands-on experience about agriculture than previous generations. Agricultural educators are challenged to vary teaching practices to meet student needs. The purpose of this study was to determine if there is a difference in knowledge acquisition between students enrolled in secondary agricultural education classes taught by cooperative learning and lecture instruction. Additionally, this study explored the knowledge acquisition of traditional and non-traditional secondary agricultural education students and perceptions of instructional methods presented. Eight schools participated in the study. No significant difference was seen in test scores between methods of instruction, …

Locating And Protecting Facilities Subject To Random Disruptions And Attacks, Hugh Medal

Graduate Theses and Dissertations

Recent events such as the 2011 Tohoku earthquake and tsunami in Japan have revealed the vulnerability of networks such as supply chains to disruptive events. In particular, it has become apparent that the failure of a few elements of an infrastructure system can cause a system-wide disruption. Thus, it is important to learn more about which elements of infrastructure systems are most critical and how to protect an infrastructure system from the effects of a disruption. This dissertation seeks to enhance the understanding of how to design and protect networked infrastructure systems from disruptions by developing new mathematical models and …

The Neglected Minority: Interviews With Successful Community College Students From Poverty, Heather Hollifield-Hoyle

Graduate Theses and Dissertations

Poverty in the US is growing at an alarming rate. The current economic climate demands higher education to embrace the economic diversity of all students and to prepare them, regardless of economic class, for a globally competitive workplace. Unfortunately, the higher education community is not as adept at serving low-income students, as it is middle- and upper- income students. Low-income students are less likely than their more affluent peers to enroll in college or graduate. Employing qualitative narrative methods, this dissertation explores the factors that contributed to the persistence and success of 18, low-income, community college students. This study addresses …

The Price Of Dissent: Freedom Of Speech And Arkansas Criminal Anarchy Arrests, Jamie Leto Kern

Graduate Theses and Dissertations

Following World War I and the Bolshevik Revolutions, America's Red Scare began, inciting fanatical patriotism and an alleged threat of anarchy that gripped a nation with fear. Paranoia about communists, Socialists, and anarchists divided the country and resulted in many states, including Arkansas, passing criminal anarchy laws. Since a majority of those accused of anti-American activities were involved in labor disputes, Arkansas makes for an interesting case study; not only did it have a relative lack of labor disputes, it still passed anti-Bolshevik laws. The purpose of this research is to develop an understanding of the ways in which dissenters …

An Exploration Of Social Media Use In Local Television News Stations: An Evaluation And Development Of A Successful New Media Strategy, Aniseh Ebbini

Graduate Theses and Dissertations

This paper examines the ways in which Social media have gained popularity over the last decade, amongst the public, and especially in the television news industry. After evaluating the current ways Social media are being implemented and observing national trends, I developed a comprehensive new media strategy to serve as a guide and reference for any television station wanting to incorporate these tools into its regimen.

The Prevalence, Beliefs, And Instruction Of Using Homework Materials As Reported By Physical Educators In Arkansas, Daniel Joseph Burt

Graduate Theses and Dissertations

The purpose of the study was to find out the prevalence of physical educators assigning homework to their classes (17.4%) and to identify factors that are related to whether physical educators assign homework. The questionnaire was completed by 144 employed physical educators from the state of Arkansas.

Logistic regression, an independent samples t test, and a chi-square test were used to analyze if specific predictors, school demographics, and the personal beliefs of physical educators affected using homework in physical education. No statistical significance was found in the demographics or predictors, but nine of the beliefs selected indicated that a physical …

The Inclusion Of The Nature Of Science And Its Elements In Recent Popular Science Writing For Adults And Young Adults, Feng Jiang

Graduate Theses and Dissertations

This study was conducted to examine the inclusion of nature of science (NOS) in popular science writing to determine whether it could serve supplementary resource for teaching NOS. Four groups of documents published from 2001 to 2010 were included in the analysis: Scientific American, Discover magazine, winners of the Royal Society Winton Prize for Science Books, and books listed in National Science Teacher Association's (NSTA) Outstanding Science Trade Books for Students K-12.

First, computer analysis was performed to categorize passages in the selected documents based on their inclusions of NOS. Then, follow-up human analysis was conducted to assess the frequency, …

Optimization Models And Algorithms For Truckload Relay Network Design, Hector Andres Vergara Arteaga

Graduate Theses and Dissertations

Driver turnover is a significant problem for full truckload (TL) carriers that operate using point-to-point (PtP) dispatching. The low quality of life of drivers due to the long periods of time they spend away from home is usually identified as one of the main reasons for the high turnover. In contrast, driver turnover is not as significant for less-than-truckload (LTL) carriers that use hub-and-spoke transportation networks which allow drivers to return home more frequently. Based on the differences between TL and LTL, the use of a relay network (RN) has been proposed as an alternative dispatching method for TL transportation …

Cell Bioenergetics In Leghorn Male Hepatoma Cells And Immortalized Chicken Liver Cells In Response To 4-Hydroxynonenal Induced Oxidative Stress, Alissa Laura Piekarski

Graduate Theses and Dissertations

Bioenergetic mechanisms responsible for ATP production are essential in carrying out maintenance and cell-specific functions. In this study, hepatocytes (liver cells) were used to test both endogenous and exogenous stress on cellular respiration. The secondary lipid peroxide, 4-hydroxynonenal (HNE), was used because it alters bioenergetics by increasing mitochondrial proton leak that attenuates mitochondrial radical production and, therefore, endogenous oxidative stress. The major objective of this study was to demonstrate effects of HNE-induced oxidative stress on avian hepatocyte bioenergetics. Various chemical which help enable the determination of oxygen (O2) consumption linked to ATP synthesis (oligomycin), maximal O2 consumption (FCCP), and proton …

The Identification Of Quantitative Trait Loci For Sucrose And Stachyose Content In Soybean Seed, Ailan Zeng

Graduate Theses and Dissertations

Sucrose is a desirable sugar in soybean seed that affects the quality and taste of soyfoods, while stachyose is a non-digestible sugar that induces flatulence in non-ruminant animals. Therefore, soybean cultivars with high sucrose and/or low stachyose would be valuable for soyfood and meal markets. The objectives of this study were to identify quantitative trait loci (QTL) or genes associated with seed sucrose and stachyose content using simple sequence repeat (SSR) or single nucleotide polymorphism (SNP) markers. A low sucrose line, MFS-553, was crossed with a high sucrose plant introduction, PI 243545, to develop the sucrose QTL mapping population. A …

Consumer Sensory Preferences And Willingness-To-Pay For Nutraceutical-Rich Fruit, Lydia Lawless

Graduate Theses and Dissertations

Health-oriented juices are prime candidates for the nutraceutical market due to their inherent healthfulness and convenience. Fruits such as açaí berries, blueberries, blackberries, black cherries, Concord grapes, cranberries, and pomegranates are rich in potentially health-supporting polyphenolics, which makes the juices of these fruits attractive for nutraceutical optimization. The compositional, sensory, and stability properties of blueberry, blackberry, and Concord grape juice blends were explored in an extended shelf-life study. Initially, 100% blueberry juice had the highest total monomeric anthocyanins (67.40 mg/100mL), 100% blackberry juice had the highest total phenolics (249.24 mg/100mL), and 100% Concord juice had the highest polymeric color (23.21%). …

What Factors Influence Consumers' Willingness To Purchase And Consume Carbon-Labeled Rice: A Comparative Study Between Arkansas And Belgium, John A. Kelley

Graduate Theses and Dissertations

Climate change is an issue of growing importance around the globe. As global population increases so does attention focused on human contributions to climate change. One major way humans contribute to climate change is through our diets. Agricultural production is a major source of global greenhouse emissions. It has been estimated that food production is responsible for a large majority of the methane and nitrous oxide which is emitted into our atmosphere each year. Carbon footprint labeling has been developed to give consumers a way to lower their footprint and help lower emissions of greenhouse gasses. At least one retailer, …

Concurrent And Dual Credit: The Bridge To Postsecondary Education For First-Generation College Students, Todd Arron Loftin

Graduate Theses and Dissertations

One of the most significance Social challenges facing the United States is increasing the number of students entering postsecondary education and having them persist to degree completion. To accomplish this undertaking, more first-generation college students must matriculate and find academic success. Considerable research exists concerning the barriers first-generation students must overcome; however, little research exists regarding the benefits of participating in dual and concurrent credit coursework as a way to increase confidence and prepare for the rigors of higher education.

The purpose of this correlational, quantitative, exploratory study was to consider the impact of dual and concurrent credit on the …

Contextual Influences On Small Group Decision-Making: A Field Investigation, Sarah Kathryn Chorley

Graduate Theses and Dissertations

This thesis examines small group decision-making among groups of educators in an elementary school through the Bona Fide Group Perspective, which focuses on a group and its relationships to elements in its context. Twenty-six faculty members were interviewed and 26 meetings were recorded; these were analyzed using thematic analysis. The results indicated contextual, relational, and discursive factors influenced the decision-making process. Most critically, power, status, overlapping group memberships, and competing Discourses shaped the group decision-making process.

The Effects Of Body Modifications And Dress On Perceived Professionalism And Competency Of A Female Model, Ashley Donell

Graduate Theses and Dissertations

Through the norms of a society, people must meet certain expectations in order to survive and provide for their family. For example, job expectations driven by human judgment on appearance creates a norm that society must follow. The question is how much appearance attributes such as dress and hair color effect others' interpretation of who a person may be? The purpose of this study was to evaluate the relationship between specific appearance and body modifications (dress and hair color) of a young female professional and perceived competency level as determined by a convenience sample of students in selected senior level …

The Effects Of First-Year Students' Self-Perceptions Of Behaviors, Attitudes, And Aptitudes On Their First-To-Second-Year Persistence, Rebecca Jean Lambert

Graduate Theses and Dissertations

Student persistence continues to be a topic of much research and discussion in higher education. Based on Bean and Eaton's (2000) psychological theory of persistence for its theoretical framework, this study examined the effect of students' demographic and background characteristics and students' self-perceptions on their first-to-second-year persistence at a small, private, faith-based institution. Demographic and background characteristics examined were gender, race/ethnicity, first-generation college student status, high school GPA, and type of high school attended. Four constructs from the CIRP Freshman Survey were used to examine student self-perceptions: (a) Habits of the Mind, (b) Academic Self-concept, (c) Social Self-concept, and (d) …

Ultra-Low Voltage Digital Circuits And Extreme Temperature Electronics Design, Aaron J. Arthurs

Graduate Theses and Dissertations

Certain applications require digital electronics to operate under extreme conditions e.g., large swings in ambient temperature, very low supply voltage, high radiation. Such applications include sensor networks, wearable electronics, unmanned aerial vehicles, spacecraft, and energyharvesting systems. This dissertation splits into two projects that study digital electronics supplied by ultra-low voltages and build an electronic system for extreme temperatures. The first project introduces techniques that improve circuit reliability at deep subthreshold voltages as well as determine the minimum required supply voltage. These techniques address digital electronic design at several levels: the physical process, gate design, and system architecture. This dissertation analyzes …

Performing Literacy: How Women Read The World In The Late Eighteenth-Century British Novel, Amy Hodges

Graduate Theses and Dissertations

This dissertation explores the intersection of sensibility, Social identity, and literacy practices among representations of women readers in four late eighteenth-century British novels. Through an analysis of the authors' use of identity constructs which shaped and were shaped by reading practices, this study documents the rise of Social identity formation as mutually constitutive with the history of reading. The first chapter reveals how Charlotte Lennox's The Female Quixote uses Arabella's follies as education for readers about the corresponding processes of reading their society and reading novels. The second chapter argues that Frances Burney's Evelina considers women's ability to read others …