Digital Commons Network^™

Fabrication And Characterization Of Electrochemical Glucose Sensors, Mohammed Marie

Graduate Theses and Dissertations

Electrochemical sensors based on the nanostructure of the semiconductor materials are of tremendous interest to be utilized for glucose monitoring. The sensors, based on the nanostructure of the semiconductor materials, are the third generations of the glucose sensors that are fast, sensitive, and cost-effect for glucose monitoring.

Glucose sensors based on pure zinc oxide nanorods (NRs) grown on different substrates, such ITO, FTO, and Si/SiO2/Au, were investigated in this research. Silicon nanowire (NW)- based glucose sensors were also studied. First, an enzyme-based glucose sensor was fabricated out of glass/ITO/ZnO NRs/BSA/GOx/nafion membrane. The sensor was tested amperometrically at different glucose concentrations. …

Decadal Land Surface Phenology And Water Quality In The Headwaters Illinois River Watershed, Justin Ray Rollans

Graduate Theses and Dissertations

Over 25 percent of the world’s population either lives on or obtains water from karst aquifers. The complex interactions between subsurface karst geologic features, the constant motion of the plant life cycle, and significant water resource demand all suggest the need to better define those interactions. The relationship of historical land surface phenology and water quality in karst topography were investigated in the Headwaters Illinois River watershed in Northwest Arkansas (NWA). This area represents high vulnerability to surface water and groundwater contamination, with both natural and anthropogenic processes such as over application of broil litter for enhanced cattle browse, affecting …

Understanding The Relationship Between Corporate Social Responsibility, Team Identification, And Behavioral Intention With The Mediating Effect Of Satisfaction In Korean Professional Baseball League, Jaeman Son

Graduate Theses and Dissertations

The purpose of this dissertation was to provide a better understanding of how sport fans’ perceptions of a sport team’s CSR activities influence the behavioral intention of sport consumers. More specifically, the aim of this study was to propose and test a theoretical model that explore the relationship among perceived CSR and team identification and satisfaction, along with the behavioral intention. This study was to investigate the mediating role of customer satisfaction in the relationship between perceived CSR and behavioral intention. Finally, the study attempts to examine whether the relationship between team identification and behavioral intention is mediated by customer …

Prison Release, Religious And Civic Contexts, And Recidivism, Samuel Carlson Thomas Iv

Graduate Theses and Dissertations

Under the veil of mass incarceration many of the prisoners will be released, then later readmitted for another crime or parole/probation violations, which falls under the definition of recidivism. Criminologist have attempted to shed light on indicators that explain why some individual prisoners have higher likelihoods than others. I attempt to understand the specific context (at the county level) in which prisoners are released in one point in time and see if the context in which they are released can help explain their likelihoods of recidivating, specifically in the context of religious and civic organizations. I use data from the …

Risky Business: Millennials’ Protection Motivation Factors For Norovirus Outbreaks On College Campuses, Dylan Conrad Martinez

Graduate Theses and Dissertations

The risk and severity of hNoV transmission is obscurely recognized to foodservice millennial customers. Most commonly associated with cruise ships, consumers are not aware of its full potential to strike at other locations, especially college campuses. For the foodservice industry and the university community, it is imperative that a proactive method for increasing millennials’ motivation to practice mitigation methods emerges to reduce future hNoV outbreaks on college campuses. Research has shown that students can play a major role in the spread of hNoV on college campuses. Therefore, the purpose of these studies is to examine motivations for health protective behaviors …

Effect Of Macrograzers (Campostoma Spp. And Faxonius Spp.) On Periphyton In Ozark Streams With Considerations Given To Macrograzer Biomass, Phosphorus, And Season: Mensurative And Manipulative Studies, Kayla R. Sayre

Graduate Theses and Dissertations

Nutrient and benthic algal biomass relationships can guide numeric nutrient criteria development in lotic systems. However, herbivorous macrograzers may confound this relationship by reducing the slope of the positive relationship between nutrients and periphyton biomass in streams. I conducted a mensurative field study to determine if stoneroller and crayfish abundance related to algal biomass at varying nutrient concentrations and manipulated macrograzer presence with electrical exclosures in streams to examine macrograzer effects on algal biomass and understand whether these effects on periphyton varied with total phosphorus (TP) or season. Macrograzer density was quantified across a TP gradient (n=15 streams; range = …

Access To Children's Books Featuring Characters With Disabilities, Jacquelyn Thompson

Graduate Theses and Dissertations

Shared reading and access to print have been linked to improved outcomes for young children and linked to socio-economic status (e.g Neuman, 1999; Zucker, Cabell, Justice, Pentimonti & Kaderavek, 2013). As a community, we know very little about the access to books that the diverse population of preschool age children from Northwest Arkansas have. Moreover, we know very little about the type of books available to them. This study seeks to understand how many children’s books are in select preschools of varying socioeconomic status within Northwest Arkansas that service those with and without disabilities. More pointedly, within the children’s book …

Where Are All Of Arkansas' Chinquapins? An Ecological Assessment Of Castanea Throughout The State, Logan Pierce Estes

Graduate Theses and Dissertations

Around the turn of the twentieth-century, the chestnut blight fungus (Cryphonectria parasitica) was accidentally introduced into North America. This strong pathogen, which specializes on trees of the genus Castanea, spread rapidly and within half a century had nearly extirpated North America’s Castanea natives from their ranges. During this catastrophe, the American chestnut (Castanea dentata) garnered much of the scientific attention, pushing the other Castanea natives – the chinquapins – to the wayside. More than a century following the spread of the blight, little research into the ecology of North America’s chinquapins had been performed, leaving these trees significantly underrepresented. The …

The Impact Of Coaches' Character On Youth Basketball Players, Natasha Hill

Graduate Theses and Dissertations

If utilized effectively, recreation and sports can serve as major tools for developing youth, improving the educational environment, and increasing the number of productive adults that are healthier physically and mentally to positively impact society. Most research targeting recreation and sports developing youth has the perspective primarily of parents and youth. Evaluating the character strengths of coaches and youth athletes who actively participate in team basketball is vital.

An exploration of the value of basketball and character strengths of (n = 64) youth athletes, between the ages of 12 to 16 years, and the impact of their involvement with coaches …

Perceptions Of E-Learning By Management Trainees In A Small, Fast Food Restaurant, Anthony A. Longo

Graduate Theses and Dissertations

Small businesses account for a majority of U.S. jobs and play a vital role in the economy. However, the survival rate for small businesses is disconcerting. Only half of the small businesses will survive five years or more and one-third ten or more years. Fast food restaurants are part of the food and drinking industry. It is the second largest industry in the United States and the most vulnerable to business failure. Research has shown the capabilities of small business managers can play a significant role in the success or failure of a small business, but little research has been …

Forging With Embers: The Life And Pre-Gubernatorial Career Of Isaac Murphy, 1799-1864, Keith Joshua Lee Todd

Graduate Theses and Dissertations

The gubernatorial administration of Isaac Murphy from 1864-1868, as Arkansas began emerging from the Civil War into Reconstruction, has had a thorough, if dated, examination in Arkansas historiography. However, Murphy’s life and pre-gubernatorial career, including his early political activities—being the first treasurer of Washington County, Arkansas (1836-1838), serving three terms in the Arkansas General Assembly (two in the House, 1846-1849, and one in the Senate, 1856-1857), and the totality of his action during both sessions of Arkansas’s Secession Convention (1861)—have been largely neglected. This thesis will additionally provide a biographical interpretation of Murphy necessary to fully understand his political actions—his …

Optimizing The Plasmonic Enhancement Of Light In Metallic Nanogap Structures For Surface-Enhanced Raman Spectroscopy, Stephen Joseph Bauman

Graduate Theses and Dissertations

Technology based on the interaction between light and matter has entered something of a renaissance over the past few decades due to improved control over the creation of nanoscale patterns. Tunable nanofabrication has benefitted optical sensing, by which light is used to detect the presence or quantity of various substances. Through methods such as Raman spectroscopy, the optical spectra of solid, liquid, or gaseous samples act as fingerprints which help identify a single type of molecule amongst a background of potentially many other chemicals. This technique therefore offers great benefit to applications such as biomedical sensors, airport security, industrial waste …

Undergraduate Students’ Perceptions Of Their International Teaching Assistants (Itas) And Perceptions Of Themselves In A Course(S) Instructed By An Ita, Nadia Hanayeen

Graduate Theses and Dissertations

The University of Arkansas is a large, diverse public university. International teaching assistants (ITAs) represent 20% of the total graduate teaching assistants at the University of Arkansas. In the Fall semester of 2015, the University of Arkansas ranked 9th among U.S. universities based on the number of ITAs instructing undergraduate classes. Combining quantitative and qualitative data collection and analysis methods, this study investigated domestic undergraduate students’ perceptions of their ITAs and of themselves in courses instructed by ITAs. The descriptive quantitative findings showed that the two most significant challenges facing ITAs are American students’ perceptions of their pedagogical skills and …

Assessment Of Soil Properties And Vegetation In A Mounded Native Tallgrass Prairie With An Aquic And Udic Soil Moisture Regime In The Ozark Highlands Region Of Northwest Arkansas, Tyler Joseph Durre

Graduate Theses and Dissertations

Native tallgrass prairies were once considered to be the dominant pre-settlement vegetation type in the eastern third of the Great Plains, but are now designated as America’s most endangered ecosystem due to conversion to agricultural land. Prairie mounds are unique soil features still present in remnant native tallgrass prairies across the United States. The main objective was to determine the effects of soil moisture regime (i.e., aquic and udic), mound position, (i.e., mound summit, backslope, toeslope, inter-mound), soil depth (i.e., 10-cm intervals from 0 to 90 cm), and their interactions on soil physical, chemical, and hydraulic properties in a mounded …

Linkage Mapping For Soybean (Glycine Max) Flood Tolerance, Wade Stiles Hummer

Graduate Theses and Dissertations

Flood tolerance in soybean (Glycine max) is not a well-characterized trait, yet flooding damage is second only to drought stress in terms of yield reduction. The objectives of this study were to determine genetic variation for flooding tolerance in two populations of soybean recombinant inbred lines (RILs) and to identify and confirm flood tolerant QTL. Population A (WHA) consisted of 111 RILs derived from the cross 5002T by 91210-350 and Population B (WHB) consisted of 79 RILs from the cross RA-452 by Osage. Experiments were conducted at the Rice Research and Extension Center (RREC) near Stuttgart, AR in 2015 and …

Margaret White Springs Recharge Study, Buffalo National River, North-Central Arkansas, Usa, Ashlon Elizabeth Leonard

Graduate Theses and Dissertations

Margaret White Springs (MWS) is one of the largest springs in the middle section of the Buffalo National River (BNR) and contributes several tens of cubic feet per second of flow to river discharge on average, yet the source of the water has not been fully studied or documented. The spring is located approximately 4 miles downstream from Robertson Hole, a losing reach of the river. At Robertson Hole the river loses a significant amount of flow to groundwater, which during the dry season (summer) can be as much as 100%. Flow in the main channel is re-established at MWS; …

Carbon Sequestration In Grassland Soils Across Arkansas, Marya Jean Mckee

Graduate Theses and Dissertations

The capture, conversion, and long-term storage of carbon dioxide (CO2) as soil organic carbon (SOC), a process known as soil C sequestration, is a possible solution to the current and ever-increasing threat of rising greenhouse gas emissions and global climate change. Tallgrass prairies, which once historically covered the country, are known to accumulate and sequester large amounts of C from the atmosphere deep within the soil, due to their extensive rooting systems. The purpose of this research was to increase understanding of soil C sequestration dynamics and general functioning in disappearing native grassland ecosystems within Arkansas, as well as the …

Development Of A Methodology For Predicting Consumer Acceptance And Preference Toward Beverages, Shilpa Shailesh Samant

Graduate Theses and Dissertations

Consumer behavior toward food/beverages is influenced by multisensory attribute perceptions as well as emotional experiences. Traditional methods of sensory testing lack the ability to capture emotional responses and as a result, measuring food/beverage-evoked emotions remains a research challenge. There were three objectives of this dissertation study. Firstly, this study aimed to develop prediction models of acceptance of and preference for basic taste solutions using sensory attribute intensities and emotional responses. Secondly, this study aimed to extend the findings of the first objective to develop prediction models of commercially-available vegetable juice products in terms of (a) acceptance and preference under blind-tasting …

Acculturation And Internalizing Problems Among Latino Youth: A Meta-Analytic Review, Juventino Hernandez Rodriguez

Graduate Theses and Dissertations

Some studies have found acculturation to be a positive predictor of internalizing problems (i.e., anxiety and depression) in Latino youth (Gonzales et al., 2002), whereas other studies have revealed no relation or a negative relation between acculturation and internalizing problems (Smokowski, Buchanan, & Bacallao, 2009). Narrative reviews of this literature exist (Gonzales et al., 2002; Gonzales et al., 2009) but a quantitative synthesis of the literature has not been conducted. After a systematic literature search that identified 38 studies meeting inclusionary criteria, a meta-analysis was performed to estimate the size and direction of the relation between acculturation and internalizing problems. …

Evaluation Of Soybean Maturity Group And Planting Date In A Soybean-Rice Rotation On Overall Crop Productivity, Carrie Ortel

Graduate Theses and Dissertations

Little is known about the effects of soybean (Glycine max L.) management techniques on soil-nitrogen (N) credit development and its impact on the subsequent rice (Oryza sativa L.) crop’s success. This study was conducted to determine how soybean maturity group (MG) and planting date effect overall soybean productivity and its influence on the following rice crop. Various soybean planting dates (optimum and late) and MGs (3.5, 4.7, 5.4, and 5.6) were grown and followed in rotation with a rice crop. Six rates of pre-flood fertilizer-N (0, 44, 89, 134, 179, 224 kg N ha-1) were applied to the rice crop. …

Evaluation Of Short Term Cognitive Behavioral Therapy Intervention In A Primary Care Setting, Kevin Hengeveld

Doctoral Projects

Introduction: Depression and anxiety are chronic recurring medical conditions that impact all aspects of health. When depression and anxiety are present with other comorbid diseases, mortality and health care costs are higher. Children and young adults are particularly vulnerable to mental health issues. Suicide is the 2nd leading cause of death for this demographic. Depression is common in adolescents with an incidence of 8 to 20 percent. Primary care provides 70 percent of mental health care in the United States, and the primary intervention offered is pharmacological. Evidence suggests that a combination of medication and psychotherapy provide superior relief of …

Improving Adolescent Risk Behavior Screening: Implementation Of The I-Cloud Rapid Assessment Adolescent Preventive Screening (Raaps) Tool, Donna L. Rinker

Doctoral Projects

Adolescents are engaging in risky behaviors earlier contributing to 75% of adolescent morbidity and mortality with unintentional injuries listed as the most common cause of death among this population in the United States. It is reported that engaging in more than one risk behavior will lead to other risk behaviors resulting in the rise of indirect and direct costs in society today. The scholarly project was conducted in response to a midwestern Michigan primary care clinic need to improve the early identification and documentation of adolescent risk behaviors with evidence-based technology screening. The purpose of this quality improvement project was …

Is Tpmt Testing A Predictor Of Duration Of Use Or Long-Term Benefit Of Thiopurine Agents?, Shatoya R. Wilson

Masters Theses

Background: Inflammatory Bowel Disease (IBD) affects as many as 1.3 million Americans and includes both ulcerative colitis (UC) and Crohn’s disease (CD). Recent practices have moved towards using immunomodulators early in the course of disease to prevent disease progression. Patients have shown improved outcomes on immunomodulators compared to aminosalicylates, and reduced risk for tachyphylaxis compared to corticosteroid treatment. Thiopurine agents such as azathioprine and 6-mercaptopurine are immunomodulators often used to treat IBD. Unfortunately, many patients experience cytotoxicity from thiopurine use. Recent studies have shown that patients deficient in thiopurine-S-methyltransferase (TMPT), produce an overabundance of the therapeutic end product, 6-thioguanine nucleotide …

Washington Park Cemetery: The History And Legacies Of A Sacred Space, Terri Williams

Arts & Sciences Graduate Student Theses and Dissertations

Washington Park Cemetery (WPC) is an historically African American cemetery that has struggled to endure countless years of mistreatment and negligence. It is important to identify not only the cemetery itself as sacred, but also the legacies and stories of those who are laid to rest in the space. Provided is a comprehensive history of the once prominent African American cemetery that examines its origins, various controversies, and current physical state. Since the history of this cemetery has never been collected and compiled into a comprehensive document, this research serves as a historical tool that allows individuals to learn about …

Care Of Adult Cancer Survivors, Kelsey Kloosterman

Doctoral Projects

As innovative cancer treatments emerge, more people are surviving cancer. Cancer survivors have multiple and unique healthcare needs due to their cancer and cancer treatments. Communication among those treating the cancer, primary care providers, and cancer survivors is necessary to coordinate care once treatment is finished. The development of a survivorship care plan that is reviewed with the cancer survivor is intended to facilitate communication among all stakeholders. This quality improvement project examined current practice in a survivorship clinic in a Midwestern health system cancer center that cares for a variety of types of cancer patients. By reviewing evidence in …

Adolescent Health: Think, Act, Grow (Tag)— A Strengths-Based Approach To Promoting Health In Youth, Emily R. Novick, Jamie Kim, Yasmin Mazloomdoost, Courtney Barthle

Journal of Youth Development

Adolescent Health: Think, Act, Grow® (TAG) is a national call to action to promote adolescent health and healthy development. Led by the Department of Health and Human Services Office of Adolescent Health and developed with the input of national organizations, it builds on the collective wisdom of youth-serving professionals and seeks to raise the profile of adolescent health in the national discourse. Using TAG, the Office of Adolescent Health conducts outreach and delivers tools and information that support the integration of positive youth development precepts into the ongoing work of federal, state, and local public agencies; youth-serving health, public health, …

Perfection: The Fatality Of Down Syndrome, Mallory Baucom

Undergraduate Honors Theses

Down syndrome is a condition that carries with it a negative stigma and many negative assumptions. The advancement of the medical community has begun to allow expectant parents to anticipate whether their child will have Down syndrome. However, in recent years mothers are using the results of prenatal tests as a deciding factor to decide if they will continue the pregnancy. The negative stigma associated with Down syndrome has transformed into a discrimination against people with Down syndrome. There are many influencing factors that affect the decision-making process of expectant mothers. The decision to terminate one’s pregnancy is not made …

Exploring The Practices In Developing The 21st Century Soft Skills In Secondary Schools In Tanzania: A Case Study Of A Public Secondary School In Arusha Region, Ulrick T. Passian

Master of Education

This study found out child labour in Uganda as a multi-dimensional challenge that deprives children of their childhood opportunities including right to quality education. It is a manifestation of extreme household poverty and socio-cultural practices making it to some extend invisible to detect and report. Government of Uganda accordingly, developed Legal Frameworks to combat the vice through Employment Act (2006), the National Action Plan (2012), and child labour policy (2006). These frameworks among other things allow children to do light work under the supervision of an adult and making education as a principle occupation of every child in Uganda. However, …

Examining The Impact Of Child Labour On Learning Achievements In Uganda: A Case Study Of Two Primary Schools In Yumbe District, Aluma Swali

Master of Education

This study found out child labour in Uganda as a multi-dimensional challenge that deprives children of their childhood opportunities including right to quality education. It is a manifestation of extreme household poverty and socio-cultural practices making it to some extend invisible to detect and report. Government of Uganda accordingly, developed Legal Frameworks to combat the vice through Employment Act (2006), the National Action Plan (2012), and child labour policy (2006). These frameworks among other things allow children to do light work under the supervision of an adult and making education as a principle occupation of every child in Uganda. However, …

Exploring How Teachers Are Assisted By Tie To Cope With Teaching And Learning Process During The Transition Period Of Curriculum Change, Godfrey Emeran Mishomari

Master of Education

Teaching during the transition period of curriculum change is a very challenging activity. Teachers need to be assisted by Tanzania Institute of Education (TIE) through the intended curriculum, manifested curriculum as textbooks and supported curriculum such as teacher’s guides on one hand and through provision of continuous professional development on the other hand. This should be done in order to improve their teaching efficiency on the intended curriculum and the implemented curriculum during this period and far much better improving learner’s performance as an attained curriculum by the students. This is pivotal if we are to improve the quality of …