Digital Commons Network^™

Error Analysis: A Case Study On Non-Native English Speaking College Applicants’ Electronic Mail Communications, Casey Kraichoke

Graduate Theses and Dissertations

The purpose of this study is to discover major writing problems international college applicants make when composing electronic communications by analyzing the nature and distribution of their writing errors. Additionally, the researcher seeks to discover if there is a relationship between non-native English speakers’ (NNS) writing errors and demographics, which include: gender, country of origin, country of origin’s official language, program level, and program of study. The researcher hypothesizes that countries with English as an official language and the language of instruction in higher education are the most significant predictor of non-native English speakers’ writing errors in terms of count …

Dpweka: Achieving Differential Privacy In Weka, Srinidhi Katla

Graduate Theses and Dissertations

Organizations belonging to the government, commercial, and non-profit industries collect and store large amounts of sensitive data, which include medical, financial, and personal information. They use data mining methods to formulate business strategies that yield high long-term and short-term financial benefits. While analyzing such data, the private information of the individuals present in the data must be protected for moral and legal reasons. Current practices such as redacting sensitive attributes, releasing only the aggregate values, and query auditing do not provide sufficient protection against an adversary armed with auxiliary information. In the presence of additional background information, the privacy protection …

The Two-Sided Coin: Madness And Laughter As Subversion In Alice’S Adventures In Wonderland And The Sandman, Tessa Starr Swehla

Graduate Theses and Dissertations

Mad female characters in Western literature have traditionally represented attempts by dominant patriarchal discourse to subjugate women’s discourse: these characters are usually pathologized in both their dialogue with other characters and in their physical bodies. This subjugation by representation of mad female characters in dominant discourse parallels similar attempts to portray women as lacking in humor. This thesis studies the intersections between madness and humor and the ability of female characters that embody both to challenge and subvert dominant discourse. By examining the characters of Alice from Lewis Carroll’s novel and Delirium from Neil Gaiman’s graphic novel series The Sandman …

Sensitivity Of Diffuse Reflectance Spectroscopy To Dose- And Depth-Dependent Changes In Tumor Oxygenation After Radiation Therapy, Daria Semeniak

Graduate Theses and Dissertations

Along with chemotherapy, immunotherapy, and surgery, radiotherapy is one of the most common treatments used against cancer. Around 50% of all cancer patients undergo radiation therapy. While for some patients radiotherapy works efficiently and lead to a complete cancer disappearance, for others treatment outcome may be less favorable due to radioresistance processes happening within a tumor on the molecular level. Radioresistance remains a big challenge for modern oncology. The ability to identify radioresistance at the early stage of radiotherapy would help physicians to improve therapy efficiency. At the current moment, despite the rapid progress in cancer understanding and diagnostic modalities, …

Evaluation Of Safening Effects To Herbicides Conferred Via Insecticide Seed Treatments In Soybean (Glycine Max) And Grain Sorghum (Sorghum Bicolor), Nicholas Robert Steppig

Graduate Theses and Dissertations

Interactions between herbicides and insecticides in crop production have been documented for a number of years. Research has shown that applications of some organophosphate insecticides at planting can reduce cotton injury following applications of the soil-applied herbicide clomazone. Additionally, recent research has shown that, when applied as seed treatments prior to planting, some neonicotinoid insecticides can safen rice to drift from both glyphosate and imazethapyr. Since insecticide seed treatments are commonly used in many crop production systems throughout the Midsouth, exploring their ability to reduce injury from herbicides in other crops besides rice is of great interest. Presently no research …

A Social Marketing Plan For 7hills Homeless Center, Kendra Labri Williams

Graduate Theses and Dissertations

7hills Homeless Center is located in Fayetteville, Arkansas and is committed to ending homelessness in Northwest Arkansas by developing and implementing innovative services to equip the near-homeless and homeless in leading healthy and productive lives through strategic community partnerships with citizens, business, and government agencies. This thesis offers 7hills Homeless Center a comprehensive social marketing plan. The goal is to increase awareness of homelessness in Northwest Arkansas and to increase donor and volunteer involvement with 7hills. In order to accomplish these goals, a social marketing plan was developed by researching target volunteer and donor audiences, homelessness, and successful campaigns from …

The Etiology, Virulence, And Phylogenetics Of The Celery Anthracnose Pathogen, Colletotrichum Fioriniae (= C. Acutatum Sensu Lato), Jason Alexander Pavel

Graduate Theses and Dissertations

An anthracnose disease of celery, caused by Colletotrichum acutatum sensu lato, has been reported in the U.S. A phylogenetic analysis was conducted on a collection of isolates from celery and non-celery hosts to evaluate their taxonomic position within Colletotrichum acutatum sensu lato. Both celery and non-celery isolates were evaluated for pathogenicity on celery and for vegetative compatibility. Culture filtrates from celery and non-celery isolates were evaluated for their ability to reproduce the unusual leaf curl type symptoms. A total of 18 celery isolates were evaluated for their taxonomic placement based on analysis of the glutamine synthetase intron sequence. All isolates …

Examination Of Pseudomonas Fluorescence As A Recombinant Expression Host: Cloning, Expression, And Chromatography, Ahmed K.Ali Elmasheiti

Graduate Theses and Dissertations

In an effort to expand the pool of bacterium useful for biotechnology applications, Pseudomonas fluorescens, a common gram negative microbe, was examined for its ability to function in a recombinant setting. P. fluorescens is ubiquitous in nature and was initially identified as a soil bacterium found in dirt and is typically associated with plant material. Past literature indicates that it shared characteristics common to Escherichia coli and Bacillus subtilis, including simple growth conditions and potential cloning vectors, providing motivation to look into both the upstream and downstream characteristics of this bacterium. First, it was demonstrated that P. fluorescens could be …

Willingness To Pay For Irrigation Water Under Scarcity Conditions, Tyler Robert Knapp

Graduate Theses and Dissertations

Reliance of Arkansas agricultural producers on groundwater for irrigation has led to depletion of the Mississippi River Valley alluvial aquifer. Without intervention, consequences include insufficient groundwater to meet irrigation demand as well as drawdown of the deeper Sparta Aquifer, upon which communities in eastern Arkansas rely for non-agricultural use. Among proposed solutions to combat groundwater decline is the construction of off-farm surface water infrastructure to meet the irrigation needs of producers. Despite the importance of irrigated agriculture to Arkansas, there is little know about the economic value of irrigation water to producers. Thus, we implement a double-bounded dichotomous choice contingent …

Membrane Chromatography For Bioseparations: Ligand Design And Optimization, Zizhao Liu

Graduate Theses and Dissertations

Membrane chromatography, or membrane adsorber, represents an attractive alternative to conventional packed bed chromatography used in downstream processing. Membrane chromatography has many advantages, including high productivity, low buffer consumption and ease to scale up. This doctoral dissertation focuses on developing novel polymeric ligands for protein separations using membrane chromatography. Atom transfer radical polymerization (ATRP), known as a controlled radical polymerization technique, has been used to control the architecture of grafted polymeric ligands. The center theme of this dissertation is to develop new polymeric ligands and investigate how the polymer’s property (e.g. flexibility, hydrophobicity) and architecture (e.g. chain density, chain length) …

The Impact Of Unions On Information Asymmetry, Caroline Burke

Graduate Theses and Dissertations

Prior literature documents a positive association between union power, calculated using industry-level union data, and information asymmetry. Prior literature also finds a mitigating effect from employee ownership on the negative association between union power and voluntary disclosure. Using a sample of company observations for fiscal years 2008 through 2010, I examine the effect of company-specific measures of employee unionization on market-based measures of information asymmetry (proxied for by insider trading activity, analyst following, and analyst dispersion). I also examine whether employee ownership impacts the effect of company-specific measures of employee unionization on my market-based measures of information asymmetry. I find …

Big Data And Organizational Impacts: A Study Of Big Data Ventures, Taha Havakhor

Graduate Theses and Dissertations

New information technology (IT) ventures are at the forefront of developing IT innovations. In spite of their importance in the advancement of IT and the unique risks of survival that distinguishes them from established firms, the organizational literature on IT has mostly overlooked new IT ventures. Specifically, Big Data industry is a context where new IT ventures actively change the landscape of IT innovations. However, less is known about the factors influencing the economic success of Big Data ventures (BDVs), as well as the established firms that invest in them. To shed light on these factors, three essays are designed …

A Bifunctional Nanocomposites Based Electrochemical Biosensor For In-Field Detection Of Pathogenic Bacteria In Food, Meng Xu

Graduate Theses and Dissertations

This research focused on the application of electrochemical biosensors for the rapid detection of pathogenic bacteria, Escherichia coli O157:H7 and Salmonella Typhimurium, in foods. The possible presence of pathogenic bacteria in foods has always been a great threat to the wellbeing of people and the revenue of food companies. Therefore, the demand for rapid and sensitive methods to detect foodborne pathogens is growing. In this research, an impedimetric immunosensor was first developed for the rapid detection of E. coli O157:H7 and S. Typhimurium in foods. It was based on the techniques of immunomagnetic separation, enzyme labelling, and electrochemical impedance spectroscopy …

Fleeing To Fault Zones: Incorporating Syrian Refugees Into Earthquake Risk Analysis Along The East Anatolian And Dead Sea Rift Fault Zones, Bradley Wilson

Graduate Theses and Dissertations

The influx of millions of Syrian refugees into Turkey has rapidly changed the population distribution along the Dead Sea Rift and East Anatolian Fault zones. In contrast to other countries in the Middle East where refugees are accommodated in camp environments, the majority of displaced individuals in Turkey are integrated into local cities, towns, and villages—placing stress on urban settings and increasing potential exposure to strong earthquake shaking. Yet, displaced populations are not traditionally captured in data sources used in earthquake risk analysis or loss estimations. Accordingly, this study presents a district-level analysis assessing the spatial overlap of earthquake hazards …

Preparedness To Counsel Transgender College Students: Perceptions Of College Mental Health Clinicians, Valerie G. Couture

Graduate Theses and Dissertations

The purpose of this study was to assess the perceived preparedness levels of college mental health clinicians to counsel transgender college students. Multicultural counseling competency is required of professional counselors and transgender individuals are considered to be part of the multicultural population. A survey was completed by college mental health counselors (N = 84) from across the United States. The results showed a moderate amount of preparedness overall with no significant differences based on years of counseling experience nor graduation from a CACREP accredited program. Results did show the participants believed they do have a professional duty to be knowledgeable …

Examining The Sociocultural Experiences Of Cherokee Nation Citizens In Athletic Competition And Sport, Michael Dewayne Merrie

Graduate Theses and Dissertations

The purpose of this dissertation was to examine the sociocultural experiences of Cherokee adults in athletic competition and sport. Specifically, following a qualitative design, fifteen participants were interviewed about their personal experiences in athletic competition and sport while growing up in rural Oklahoma. Interviews were open-ended and followed a semi-structured script of questions with additional probes. Once completed, the recorded interviews were transcribed and data were analyzed. The data revealed six axial codes and three selective codes. Cherokee culture, psychoSocial identity, and athletic competition were the three major selective codes discovered in this study. Qualitative analyses revealed that participants have …

Genetic Determinants Of Salmonella And Campylobacter Required For In Vitro Fitness, Rabindra Kumar Mandal

Graduate Theses and Dissertations

Non-typhoidal Salmonella (NTS) and Campylobacter play a major role in foodborne illness caused by the consumption of food contaminated by pathogens worldwide. A comprehensive understanding of the genetic factors that increase the survival fitness of these foodborne pathogens will effectively help us formulate mitigation strategies without affecting the nutrition ecology. The objective of this study was to identify the genetic determinants of Salmonella and Campylobacter that are required for fitness under various in vitro conditions. For the purpose, we used a high throughput Transposon sequencing (Tn-seq) that utilizes next generation sequencing (NGS) to screen hundreds of thousands of mutants simultaneously. …

A Content Analysis Of Advertising On Children’S Television Networks, Demarius Davis

Graduate Theses and Dissertations

This content analysis study on licensed characters in advertising collected data in summer 2015 from three children’s cable networks: Cartoon Network, Disney Channel and Nickelodeon. Using Social cognitive theory and based on past research (Barcus, 1975; Atkin, 1976; Calcott & Lee, 1994; Stitt & Kunkel, 2008; LoDolce et al., 2013; Castonguay et al., 2013), the study examined whether the use of licensed characters and emotional appeals varied in advertising for healthy or unhealthy foods, mass media genre and the character’s gender. The study found licensed characters are more likely to be used to promote unhealthy foods, originate from movies and …

The Effects Of Using Cinnamon Leaf And Bark Essential Oils On Listeria Monocytogenes (L.M.), Salmonella Typhimurium (S.T.), In Model System, Strawberry Shake And Fresh Celery, And Sensory & Shelf Life Studies, Wafaa Brnawi

Graduate Theses and Dissertations

Essential oils derived from the bark and leaves of the cinnamon plant have long been used as natural preservatives and flavoring agents in different types of foods. In this study, we evaluated the antimicrobial effects of cinnamon essential oils (CEOs), obtained from cinnamon leaf or bark, against two foodborne pathogens i.e., Salmonella Typhimurium (S.T.) and Listeria monocytogenes (L.m.). Two different concentrations of microbial loading were used i.e.,109 and 104, cultured in nutrient media broth, strawberry shakes, and on celery sticks. Both CEOs of leaf and bark at 0.5% and 1% were found to completely inhibit S.T. and L.m., immediately after …

A Portable And Automatic Biosensing Instrument For Detection Of Foodborne Pathogenic Bacteria In Food Samples, Zhuo Zhao

Graduate Theses and Dissertations

Foodborne diseases are a growing public health problem. In recent years, many rapid detection methods have been reported, but most of them are still in lab research and not practical for use in the field. In this study, a portable and automatic biosensing instrument was designed and constructed for separation and detection of target pathogens in food samples using nanobead-based magnetic separation and quantum dots (QDs)-labeled fluorescence measurement. The instrument consisted of a laptop with LabVIEW software, a data acquisition card (DAQ), a fluorescent detector, micro-pumps, stepper motors, and 3D printed tube holders. First, a sample in a syringe was …

The Power Fantastic: How Genre Expectations Mediate Authority, Angela Rose Cox

Graduate Theses and Dissertations

This dissertation reconciles academic and popular uses of the term genre, concluding that genre is a transmedial, mutable, associative, recognized system regulated through tacit understandings of prestige and power in a given Social space. The study employs a digital humanities method (dependent on digitally facilitated data analysis), conducting descriptive discourse analysis on collected online discussions from fan spaces concerning the fantasy genre and matters related to fantasy. In this way, I construct an image of the fantasy genre, and genre in general, as a multimodal space in which material freely passes between traditional and new media and participants actively negotiate …

Ecological Approaches To Modernism, The U.S. South, And 20th Century American Literature, Justin Ford Tinsley

Graduate Theses and Dissertations

This project seeks to draw from the insights of the emerging scholarly discipline known as ecocritism, study of the relationship between human and nonhuman in all arts and in all diverse forms, and apply them to the study of a specific regional art, that of the U.S. South. As an interrogation of the human / nonhuman binary, ecocriticism is intrinsically intertwined with the concept of place. Southern studies—having long explored the diversity (in terms of both human experience and geographical terrain) characterizing the region—offers ecocriticism a ripe testing ground for theoretical mergers and analytic applications. Both fields celebrate hybridity, multiplicity, …

Bioorthogonal Reactions: Synthesis And Evaluation Of Different Ligands In Copper Catalyzed Azide-Alkyne1,3-Dipolar Cycloaddition (Cuaac), Zainab Abdullah Almansaf

Graduate Theses and Dissertations

The Copper CatalyzedAzide-Alkyne1,3-Dipolar Cycloaddition (CuAAC) reaction has unique features that qualify it to be one of the best click reactions. Its applications have been shown in different aspects and for multiple purposes. The oxidative degradation of biological systems (labile proteins and live cells) is, however, generally recognized as the major problem when using this reaction in living systems. Reactive oxidation species can be easily produced in the presence of copper(II), ascorbate and air, and this is the main cause of toxicity. However, the uses of ligands have shown a major impact on reducing copper toxicity, protecting Cu(I) from the redox …

Extracellular Matrix Remodeling And The Inflammatory Response During Skeletal Muscle Regeneration In Sarcopenic Obese Mice, Lemuel Arthur Brown

Graduate Theses and Dissertations

AIM: Sarocpenic obesity is a national concern within the United States because this metabolic syndrome is tied with reduced mobility and quality of life. Both obesity and aging are associated with insulin-resistance, chronic low-grade inflammation and muscle weakness. Skeletal muscle regeneration is a process that involves the coordinated effort of myogenic regulatory factors (MRFs), inflammatory signaling, and extracellular matrix (ECM) remodeling for optimal regeneration. It has been demonstrated that obesity and aging have a reduction in muscle regeneration. It has not been examined if sarcopenic obesity will further reduce muscle mass and the regenerative process. The purpose of this study …

Effects Of Fermentation By Yeast And Amylolytic Lactic Acid Bacteria On Grain Sorghum Protein Content And Digestibility, Christina Day

Graduate Theses and Dissertations

Grain sorghum is an underutilized crop despite many advantages to its cultivation. A drought-tolerant plant with many pest-resistant cultivars, its applications are limited by problems with nutrient availability, particularly protein digestibility. Digestibility of grain sorghum protein is reduced by antinutritional compounds in the grain like tannins and phytates, and by moist-heat cooking. Some of these concerns can be mitigated by how the grain is processed. Fermentation is one processing method that can improve digestibility. Fermentation can also concentrate protein in a substrate. In this experiment, grain sorghum was subjected to different treatments and used as a substrate for yeast fermentation. …

Apparel Design Process: Shifting The Basic Pattern Block Into A New Framework To Fit The Demands Of Post Double Mastectomy Women, Shan Gao

Graduate Theses and Dissertations

Breast cancer is a leading cancer among women today. Mastectomy is one of the most common paths for breast cancer prevention and treatment. However, this treatment path can cause noticeable body changes around the woman’s bust area. Recently more and more post mastectomy women are deciding to live without breast reconstruction surgery. This decision referred to as “going flat” or “living flat.” Due to the changed bodies and a lack of information on functional and aesthetic concerns related to clothing, clothing selection becomes difficult for post mastectomy women who choose to “live flat.”

The purpose of this study was to …

Effects Of Acute Heat And Oxidative Stress On The Hepatic Expression Of Orexin And Its Related Receptors, Stephanie Khaldi

Graduate Theses and Dissertations

It is widely known that orexin A and B peptides as well as their receptors are expressed in the hypothalamus and distributed throughout the central nervous system, but there have been few studies regarding its presences in other parts of the body. There is now evidence that orexin (ORX) and its receptors (ORXR1/2) are present in the avian liver; however, their regulation under different environmental conditions is still unknown. In the current study, we sought to determine the effects of heat and oxidative stress using hydrogen peroxide (H2O2) and 4-hydroxynonenal (4-HNE) on the hepatic expression of ORX and ORXR1/2 in …

Direct Attachment Of 4-Hydroxybenzoic Acid Polymers And Capture Agents To Flat Sheet And Microdialysis Membranes For Improved Mass Transport, Sarah Jane Phillips

Graduate Theses and Dissertations

Microdialysis (MD) sampling is a diffusion-based separation method which has the ability to sample any analyte that can diffuse across the semi-permeable membrane. However one challenge for MD is that for soluble proteins greater than 10 kDa, the relative recovery (RR) using a 100 kDa MD probe is between 1-5%.1 There are two major barriers that lead to these low recovery values - nonspecific adsorption (NSA) and poor solute mass transport. To overcome these two barriers, the modification of PES-based MD membranes has been initiated by laccase. Previous researchers have used laccase to modify PES flat sheet and hollow fiber …

Perceptions Of Division I Athletic Director Career Paths, Eric A. Wood

Graduate Theses and Dissertations

There is increased information about the profile of current collegiate athletic directors as it relates to education, age, race, and gender. However, there is a gap in the knowledge of the career paths of the modern day Division I collegiate athletic director position compared to the athletic directors studied over 20 years ago. There is also a gap in the knowledge of the skills necessary to be an effective athletic director from the perspective of Division I athletic directors. The purpose of this study was to use the Perceptions of Division I Athletic Director Career Paths (PADCP) scale to determine …

Cover Crop Establishment And Potential Benefits To Arkansas Farmers, Ashley Elizabeth Humphreys

Graduate Theses and Dissertations

Soybean farmers in Arkansas need best management practices (BMPs) that maximize the benefits of using cover crops including planting date and fertilization recommendations. An evaluation of cover crop species, planting dates, seeding rates, fertilizer rates, and N accumulation aids in providing these BMPs. The first objective of this research is to assess the effect of planting date on biomass production, as well as looking at the interaction of seeding rate or fertilizer rate for legumes or non-legumes, respectively, using Austrian winter pea (Pisum sativum), cereal rye (Secale cereale), black oats (Avena strigosa), wheat (Triticum aestivum), and tillage radish (Raphanus sativus). …