Digital Commons Network^™

Incarcerating Exceptional Pupils: Is There A School-To-Prison Pipeline In Eastern Oklahoma?, Brett Alan Fitzgerald

Graduate Theses and Dissertations

The school-to-prison pipeline metaphor represents an educational environment that allows public schools to push many at-risk children out of school and into the juvenile justice system or even worse, the adult criminal justice system (Wald and Losen, 2003; Lynn, 2010; Tuzzolo and Hewitt, 2006). The purpose of this study is to examine whether a school-to-prison pipeline exists in eastern Oklahoma, and if so, to better understand the characteristics of the public schools that may be contributing to it. The school-to-prison pipeline metaphor guided three research questions regarding whether certain public schools in eastern Oklahoma referred greater percentages of their students, …

Antibacterial Activity Of Commercially Available Plant Extracts On Selected Campylobacter Jejuni Strains, Divya Oppath Sivasankaran

Graduate Theses and Dissertations

Campylobacter jejuni is recognized as a leading cause of foodborne illness worldwide with approximately 850,000 cases per year in the United Sates. A total of 18 species of Campylobacter have been identified worldwide to date. Foodborne transmission of C. jejuni is mainly through the consumption of unpasteurized milk, contaminated poultry meat and water. C. jejuni can survive in very diverse environments under stressful conditions in human and animals which is different from the specific conditions and media required in laboratory experiments. There has been increased research in recent years to identify naturally occurring antibacterial agents to control and eliminate C. …

Understanding Service Utilization Disparities And Depression In Latino Parents And Children: The Role Of Fatalismo, Elizabeth Anastasia

Graduate Theses and Dissertations

Research has repeatedly demonstrated a disparity between need and utilization of mental health services for Latino adults and children. The adapted Health Beliefs Model (Henshaw & Freedman-Doan, 2009) provides a useful framework for conceptualizing the roles of perceived severity and therapy expectations in the relation between demographic variables and service utilization. Cultural variations in perceptions of mental illness by Latinos may be linked with lower service utilization rates for Latino parents and children. It was speculated that fatalismo, a cultural construct similar to external locus of control, may be related to perceptions of mental illness and service utilization outcomes for …

Increased Effluent Dosage Effects On Septic System Absorption-Field Products Of Differing Architecture Types, Andrew Richard Gibbons

Graduate Theses and Dissertations

Nationwide, approximately 20% of all homes use an on-site septic system as a form of household wastewater treatment. Since karst features are prevalent throughout the Ozark Highlands region of Northwest Arkansas, surface and groundwater resources are susceptible to contamination. Therefore, the objectives of this study were to evaluate the effects of soil condition (i.e., wet and dry) and absorption-field-product architecture type [i.e., chamber, gravel-less-pipe (GLP), polystyrene-aggregate (PSA), and pipe-and-aggregate (PA)] on in-product solution storage and biomat thickness in a profile-limited soil, and to identify the long-term acceptance rate (LTAR) of each product. During Phase I of this study (i.e., March …

Examining The Role Of Street-Level Bureaucrats In The Implementation Of An Affordable Rental Housing Policy For Extremely Low Income Households In The District Of Columbia, Rod Williams

Graduate Theses and Dissertations

The individuals who staff the nation's 4,600 Community Development Corporations (CDCs) represent the front line in production of affordable housing for America's poor. CDC staff members work within chronic funding uncertainties, applying complex and often ambiguous policies, under pressure to address shortfalls in affordable units. As such, they represent a prime example of Lipsky's (1980) street level bureaucrats (SLBs): agency workers with no formal policy role, who nevertheless shape policy by exercising discretion in the course of implementing ambiguous directives under stressful and alienating conditions.

The purpose of this study is to uncover how CDC SLBs experience their work and …

Screening Diverse Soybean Germplasm For Water-Logging Tolerance, John Franklin Carlin

Graduate Theses and Dissertations

Water-logging can be detrimental to soybean growth and development; effects range from chlorosis and stunting to yield loss and plant death. Soybean response to, and the effects of, water-logging are dependent on the growth-stage of the plant at the initiation of water-logging. The objectives of this study were to screen a diverse soybean germplasm collection for water-logging tolerance (WLT) at both the V5 and R1 growth stage and to develop a method to screen soybean for WLT in greenhouse. One hundred thirty five genotypes consisting of historical genotypes, PIs, drought and WLT tolerant breeding lines were screened for WLT in …

Monsters In Common: Identity And Community In Postapocalyptic Science Fiction After 9/11, Jeremy J. Burns

Graduate Theses and Dissertations

In the aftermath 11 September, 2001, postapocalyptic science fiction has offered a way to make sense of the events of that day, as well as the years of social, cultural and political upheaval that have followed. In many ways, 9/11 began immediately to take on apocalyptic significance in the American national narrative, seemingly marking the end of one period and the beginning of another, entirely different one. To think of 9/11 as a kind of apocalyptic break with the past, however, does not tell the whole story. Moreover, such thinking denies key historical linkages between the American response to 9/11 …

Synthetic Constructive, Jonathan Wade Mcdaniel

Graduate Theses and Dissertations

Synthetic Constructive is an exhibition of paintings and collages, both reflect the building and managing of synthetically constructed places and expose the human condition of struggle in both the physical world and the emotional world. I view these works as synthetically created arenas that inform my understanding and experience of natural forces that cannot be rationalized or neatly ordered. Though inspired by and constructed from the imagery of the after effects of devastation they become more than that as they explore these relationships. It is important that these works, both as collages and as paintings, reflect the search and process …

Investigation Of The Flow And Fate Of Nitrate In Epikarst At The Savoy Experimental Watershed, Northwest Arkansas, Jozef Laincz

Graduate Theses and Dissertations

Many karst aquifers are at high risk of nitrate contamination due to a combination of vulnerable geology characterized by thin soils and conduit flow, and excess inputs of nutrients from animal feeding operations. One zone that is present in many karst regions and could play an important role in nitrate attenuation due to properties such as increased residence time and matrix-water contact is the upper, weathered portion of karst, the epikarst. However, the understanding of this role is lacking, and the objective of this dissertation was to elucidate it. The fate of nitrate in the epikarst was traced along a …

Field-Obtained Soil Water Characteristic Curves And Hydraulic Conductivity Functions, Elvis Ishimwe

Graduate Theses and Dissertations

A compacted clay liner (test pad) was constructed and instrumented with volumetric water content and soil matric potential sensors to determine soil water characteristic curves (SWCC) and hydraulic conductivity (k) functions. Specifically, the compacted clay liner was subjected to an infiltration cycle during a sealed double ring infiltrometer (SDRI) test followed by a drying cycle. After the drying cycle, Shelby tube samples were collected from the compacted clay liner and flexible wall permeability (FWP) tests were conducted on sub-samples to determine the saturated hydraulic conductivity. Moreover, two computer programs (RETC and UNSAT-H) were utilized to model the SWCCs and k-functions …

The Art Of Lebanese Verbal Dueling: The Battle Of Beit Mery And Beyond, Paula Marie Haydar

Graduate Theses and Dissertations

This dissertation examines the living and vibrant oral tradition of verbal dueling in Lebanon, also known as Lebanese zajal. The introductory chapter explores the historical, sociolinguistic, and musical-metrical roots of today's Lebanese zajal contests and festivals, which feature teams of up to four poets who compete against each other in improvised, sung verse in colloquial Lebanese, carrying a sort of dialogue within which they argue opposing sides of universal themes and topics of current social interest. Though time, tradition, and culture in the Lebanese mountainside have nurtured the development of sung oral poetry into its current form and status …

Millennial Alumni Perceptions Of Communications Media Utilized By The Dale Bumpers College Of Agricultural, Food And Life Sciences, Amanda Nicole Anthony

Graduate Theses and Dissertations

Alumni relationship cultivation serves as the foundation of higher education and must be maintained to keep graduates and alma maters connected. To evaluate the success of communications media in reaching recent graduates, classified as Millennials, this study sought to determine Millennial alumni perceptions of media distributed by the Dale Bumpers College of Agricultural, Food and Life Sciences (Bumpers College) from 2012 through 2014. Assessed communications media included The Graduate and AR Culture magazines, The Graduate e-newsletter, tailgate and mocktail party invitations, College website, and social media presences. Active and inactive Millennial alumni (N = 20) responses were gathered through …

Liminal River: Art, Agency And Cultural Transformation Along The Protohistoric Arkansas River, Leslie Walker

Graduate Theses and Dissertations

For nearly a century, ceramic vessels looted from Protohistoric Native American Graves in the Central Arkansas River Valley have raised questions about the ethnic identity of the inhabitants of the region and their relationship to their neighbors in time and space. This analysis combines careful documentation of 1198 of these vessels with excavated sherds and other data from the Carden Bottoms site (3YE0025) and adjacent rock art sites in the Arkansas River Valley to provide a context for these vessels and, in so doing, defines the Dardenne Style of artistic production. Comparing motifs, and the manner in which they are …

Identification And Development Of The Support Needs In Nematology For Arkansas Cooperative Extension Personnel, Mia Gentry

Graduate Theses and Dissertations

County extension agents are vital to the land-grant university system and are responsible for transferring current, research-based knowledge from the university to the community. In-service training allows agents the means to maintain a current, sound knowledge base. Needs identified by leading nematologists led the researcher of this study to assess if nematology education was a topic that warranted in-service training development for Arkansas Cooperative Extension Service (CES) agents. The researcher also assessed agents' comfort level with job related technology. Of the respondents, 67% identified general knowledge of plant parasitic nematodes necessary to meet the needs of their clientele. Findings from …

A Mixed Methods Approach Of Communication Campaign Development And Assessment: Identifying The Needs Of An Audience And Determining The Value In Evaluation, Tara Johnson

Graduate Theses and Dissertations

The two articles presented in this thesis used both quantitative and qualitative research methods to examine two distinct stages of communication campaigns: research and evaluation. In the quantitative study, students (n = 440) at the University of Arkansas were surveyed to determine their perceptions of the Arkansas Water Resources Center (AWRC), water resources, and water issues. A questionnaire was developed from an existing instrument, reviewed by a panel of experts, pilot tested, and revised. The researchers found participants were most aware (M = 3.23, SD = 1.14), concerned (M = 4.07, SD = 0.86), and interested (M = 4.10, SD …

Impedance Biosensors For The Rapid Detection Of Viral And Bacterial Pathogens Using Avian Influenza Virus Subtypes H5n1 And H7n2 And Escherichia Coli O157:H7 As Model Targets, Jacob David Lum

Graduate Theses and Dissertations

This research investigated impedance biosensors for the rapid detection of viral and bacterial pathogens using avian influenza virus (AIV) subtypes H5N1 and H7N2 and Escherichia coli O157:H7 as the model targets, which were chosen due to their impact on the agricultural and food industries. For the detection of AIV H7N2, a single stranded DNA aptamer was selected using systematic evolution of ligands by exponential enrichment (SELEX). The selected aptamer and a previously selected aptamer against AIV H5N1 were used in a microfluidics chip with an embedded interdigitated array microelectrode to fabricate an impedance biosensor for specific detection of AIV H7N2 …

Gender, Humor And Quality Of Life In Workplace Sitcoms: A Content Analysis Examining Agency In Post-Recession Situation Comedies, Gwendolyn Logan Bost

Graduate Theses and Dissertations

This study used content analysis to analyze gender representations in post-recession workplace sitcoms using a typology developed using Maslow's Hierarchy of needs. 100 episodes of programming were analyzed by five graduate researchers for a total of 2579 cases. Though men dominated the sample, results were dissimilar from previous findings within some of the literature on televised representations of gender. Findings indicated that need type for most commonly expressed needs were split fairly evenly by gender, but that less expressed needs were more polarized with regard to gender representation. Women also met their own needs more than men did, and had …

Characteristics Of Agricultural Communications Undergraduate Programs, Morgan Michelle Large

Graduate Theses and Dissertations

This study was designed to characterize agricultural communications undergraduate programs nationwide. A total of 41 undergraduate agricultural communications programs were identified via the National ACT database, Internet searches, and previous academic program research. Objectives included creating an accounting of existing programs, a description of those programs, identifying trends in program demographics, curriculum development and identifying top programs. This study employed a census approach and used a mixed methods design. A mixed-methods survey instrument was used to collect the data. The survey included questions to gain both qualitative and quantitative data to meet this study's objectives. The quantitative data were analyzed …

Overcoming Roadblocks In Introducing Virtual World Technology To High Schools, Casey Dylan Bailey

Graduate Theses and Dissertations

The EAST (Environmental And Spatial Technology) Initiative is a non-profit educational organization that provides students in over two hundred schools in eight states with access to advanced computing technologies for the purpose of enabling students to develop technical skills early and to produce solutions to local community problems. Although many high-end technologies are available through EAST, they are desktop solutions that individual students use and there are none that enable students within a school or between schools to collaborate.

This thesis is a saga that documents the identification and removal of many roadblocks to introducing a 3D multi-user virtual simulation …

Self-Assembly Of Gold Nanosphere Dimers By Inertial Force, George Andrew Christopher Sakhel

Graduate Theses and Dissertations

The morphology and composition of a nanoparticle (NP) play a critical role in determining the NP's properties and function. To date, researchers have created a myriad of NPs of different shapes, sizes, and compositions with interesting attributes and applications ushering a revolution in medicine, electronics, microscopy, and microfluidics.

In this study, gold (Au) nanosphere dimers (NSDs) have been synthesized through a novel self-assembly method. These particles were created from Au NPs mono-dispersed in aqueous solution via a process of centrifugation and capping agent replacement. Au NSDs consist of two Au NPs combined together with minimal gaps between them. Optical spectral …

Academic Clustering Of Student-Athletes: A Case Study Of Football And Basketball Programs, Matthew Brett Rowland

Graduate Theses and Dissertations

This study explores the topic of academic clustering within the football and men's and women's basketball teams at the University of Arkansas. Given the prominence of collegiate sport in America, this paper examines a relatively understudied topic regarding student-athletes and education. Using a mixed methods approach, the topic of academic clustering is analyzed statistically, as well as through in-depth interviews with student-athletes and academic advisors in the athletic department. Statistical analysis shows significant over- and under-representation of student-athletes in certain University colleges (e.g., Fulbright College of Arts and Sciences, Walton College of Business, and College of Engineering), the presence of …

The Role Of Trustees In A Capital Campaign At A Public Research University, Marcia Lynn Overby

Graduate Theses and Dissertations

The changing financial environment of public universities includes competing priorities for state funding. In today's economy, state appropriations for higher education do not always keep pace with institutional need. During periods of declining state revenue, universities endure budget cuts reducing state funding. When tuition dollars cannot be increased further and state appropriations are decreased or flat, public university administrators rely on fundraising to meet their mission, goals, and vision for their institutions. The fundraising program believed to produce the greatest results is a capital campaign. Large and ambitious capital campaigns can help institutions of higher education respond to decreases in …

The Influence Of Collaboration In The New Product Development Process, Laurel Aynne Cook

Graduate Theses and Dissertations

Consumers expect greater involvement in the product and service offerings of firms. In response, the integration of collaboration in the new product development (NPD) process has become of interest to researchers across disciplines. Collaboration can be viewed as a "looking glass" technique, which fosters an enhanced sense of shared identity by promoting a "we" versus an "us-them" orientation. Drawing from social identity and exchange theories, the central purpose of this dissertation is understanding ways that collaboration influences perceptions during the NPD process to help shape consumers' identity with the firm.

Essay 1 employs a mixed-method approach across three studies to …

Community At The Courts: Social And Community Interactions At Public Basketball Courts, Elizabeth Arnaud Fogle

Graduate Theses and Dissertations

Based on over 60 informal interviews conducted at two public basketball courts, this study utilizes grounded theory to trace class- and race-based differences in the social interactions occurring at both parks. By comparing social interactions between a white, middle class basketball court, and a black, lower class basketball court, I argue that social engagement is not be declining for all segments of society as some theorists suggest. Moreover, I argue that the relationships forged at the basketball court in a predominantly black, working-class neighborhood prove to be more meaningful and have deeper benefits than those forged at a basketball court …

Improving Golf Putt Performance With Statistical Learning Of Eeg Signals, Qing Guo

Graduate Theses and Dissertations

In this thesis, a machine learning based method is proposed to predict the putt outcomes of golfers based on their electroencephalogram (EEG) data. The method can be used as a core building block of a brain-computer interface, which is designed to provide guidance to golf players based on their EEG patterns. The proposed method includes three steps. First, multi-channel 1-second EEG trials were extracted during golfers' preparation of putting. Second, different features are calculated such as correlation coefficient, power spectrum density and coherence, which are used as features for the classification algorithm. To predict golfers' performance, the support vector machine …

Effects Of Breathing Cool Air During Cycling Exercise In The Heat, Christian B. Ridings

Graduate Theses and Dissertations

INTRODUCTION: The purpose of this study was to establish the ability of the Core Cooler device to prevent rises in physiological heat strain of trained male cyclists during cycling exercise in the heat. METHODS: 15 healthy male cyclists cycled at 50-70% VO2max for 75 minutes in a heat chamber of 31°C & 55% RH while breathing through the Core Cooler device under three different conditions: 1:4 ratio without ice termed control (CN), 1:4 ratio with ice termed low intermittent (LI), and at 1:1 ratio with ice termed high intermittent (HI). Data collected every 15 minutes assessing intestinal temperature (TGI), heart …

Modified-Electrodes For Redox-Magnetohydrodynamic (Mhd) Pumping For Microfluidic Applications, Christena Kayl Nash

Graduate Theses and Dissertations

A new microfluidic pumping and stirring technique was demonstrated for lab-on-a-chip applications. Microfluidics was accomplished via redox-MHD, which takes advantage of a body force (F_B) that is generated when there is a net movement of ions in solution (j) in the presence of a perpendicular magnetic field (B), according to the equation F_B = j×B. In this work the movement of ions in solution was generated using electrodes modified with the conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) rather than a redox species in solution, which can interfere with analyte detection and with biological species. …

Experimental Terahertz Imaging And Spectroscopy Of Ex-Vivo Breast Cancer Tissue, Tyler C. Bowman

Graduate Theses and Dissertations

This thesis presents experimental results of terahertz imaging and spectroscopy techniques to analyze excised breast cancer tissue. The pulsed terahertz system at the University of Arkansas was used to assess formalin-fixed, paraffin-embedded breast cancer tissue obtained from 22, 40, and 46 year old patients. The tissue for this research was sliced to relatively thin sections of 10 μm thick and mounted on glass slides. Terahertz reflection time and frequency domain images of the breast cancer tissue were then obtained and compared to histopathology slides from the same patient. Results showed good correlation between the reflection images and histopathology slides for …

Male Privilege, Sexual Double Standard, And Sexual Scripts: College Students' Perceptions And Influences Of Hooking Up, Mary Ellen Hunt

Graduate Theses and Dissertations

Approximately three-fourths of young adults in college hook up at least once by their senior year (i.e., engage in a casual sexual encounter outside the context of a committed relationship). There are important gender differences which may inform how men and women conceptualize hooking up. Men and women may have different predictors of interest, expectations of sex, or attitudes toward sex. These gender differences are likely culturally constructed by the sexual double standard and traditional sexual scripts which project men to be the aggressive sexual initiators who want sex all the time, and women to be passive gatekeepers who desire …

Transitioning To Writing About Writing: A Consideration Of The Metawriting Teaching Approach At The University Of Arkansas, Katie Michelle Smith

Graduate Theses and Dissertations

This thesis uses case studies of six Teaching Assistants and Instructors to analyze the curricular and pedagogical shift from a writing-through-literature model to the Composition II course to a metawriting approach during the 2014 spring semester at the University of Arkansas. The administrative decision from the Program in Rhetoric and Composition to make this transition came in response to the 2007 article by Elizabeth Wardle and Douglas Downs in College Composition and Communication outlining a "Writing about Writing" approach to teaching composition.