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The Emotional Toil Of Paying For College: Lower Socioeconomic Status White Women’S College Experiences, 1880-1920, Heidi A. Jaeckle

Graduate Theses and Dissertations

Typically historical inquiries in higher education have been centered on privileged individuals from wealthier backgrounds who had the opportunity of attending primarily prestigious institutions. The experiences of college women from lower to middle class socioeconomic backgrounds have been for the most part ignored. This dissertation explores how socioeconomic backgrounds shaped the experiences of college women from the late nineteenth century to the early twentieth century, focusing on lower class students. With no universal financial aid program, the majority of these women were from families who could afford to pay tuition. Women from lower socioeconomic backgrounds did attend college, but their …

When Down Looks Like Up: Self-Deceptive Self-Handicapping, Kyle T. Hallam

Graduate Theses and Dissertations

In this thesis, I present a novel example of intentional self-deception as embodied in self-handicapping behavior. Self-handicapping is the proactive construction or acquisition of some obstacle to success in some domain, and is employed by individuals primarily as a means of deflecting blame for a failure or negative outcome. I argue that this behavior stands in a mutual, symbiotic relationship to self-deception. On the one hand, self-handicapping is the behavioral instantiation of the biased evidence manipulation which facilitates self-deception; while on the other hand, self-handicapping effectively functions to bias judgments in this way only in case concurrent self-deception sustains the …

Families Of Homogeneous Licci Ideals, Jesse Keyton

Graduate Theses and Dissertations

This thesis is concered with the graded structure of homogeneous CI-liaison. Given two homogeneous ideals in the same linkage class, we want to understand the ways in which you can link from one ideal to the other. We also use homogeneous linkage to study the socles and Hilbert functions of Artinian monomial ideals.

First, we build off the work of C. Huneke and B. Ulrich on monomial liaison. They provided an algorithm to check the licci property of Artinian monomial ideals and we use their method to characterize when two Artinian monomial ideals can be linked by monomial regular sequences. …

Phenotypic Switching Of Bacterial Cells In Extreme Environments, Sudip Nepal

Graduate Theses and Dissertations

A large number of terrestrial microbial lives thrive in extremes of environmental conditions, including extremes of pressure, temperature, salinity, pH, and a combination of them. For example, all the marine biomass thrive at high hydrostatic pressure depending on depth. The temperature in the ocean can be very high near the hydrothermal vents and salinity and pH depends on the composition of salt in the surrounding areas. On the surface, hot springs, lakes and geysers provide high temperature conditions, while many places are permafrost regions with subzero temperatures. There is an emerging body of work on the viability, genomics, and metagenomics …

Distillers Dried Grains With Solubles: Determination Of Metabolizable Energy Values Using Regression-Based Assays And Their Correlation With Chemical Composition, Kenia Mitre

Graduate Theses and Dissertations

The inherent variability and lack of standardization of in vivo assays to determine the metabolizable energy (ME) of DDGS has led to inconsistent values and limited its potential to use in broiler diets. Therefore, two experiments were conducted to characterize the content of nitrogen-corrected ME (MEn) in 11 DDGS sources obtained from various ethanol plants using a regression-based broiler assay and to attempt to develop equations to predict MEn based on its chemical composition. In experiment 1, the objectives were to determine the influence of inclusion level and feed intake on the resulting ME and MEn values of a single …

Flourishing Through Communicative Language Learning: An Exploration Of University Learners’ Basic Needs, Well-Doing, And Well-Being, William S. Davis

Graduate Theses and Dissertations

In the last 25 years, world language education (i.e., “foreign” or “second” language education) in the United States has seen a meaningful turn toward pedagogical approaches emphasizing communication, contextualization, and culture. This has coincided with the blossoming of recent theoretical perspectives and empirical research centered on language learners’ emotions, beliefs, and well-being. Two frameworks, self-determination theory (SDT) and positive psychology, are leading this exploration. Although these two perspectives have enhanced the discussion around language learning, each has its gaps; positive psychology research and its recommendations for practice do not often agree on what constitutes well-being and flourishing, while SDT, which …

Environmental Influences On Tree-Driven Karst Bedrock Physical Weathering, Cole Robert Jimerson

Graduate Theses and Dissertations

The role of tree roots as stressors that contribute to physical weathering processes and thus soil generation remains an open question in critical zone science. While evidence suggests roots may be able to damage rock by accessing pre-existing fractures, where they can expand due to water uptake or generate forces on rock in response to wind gusts, these processes have not been investigated in temperate karst regions until now. I monitored forces at the root-rock interface for an American elm and Hackberry tree between September 2019 and May 2020. I used piezoelectric force sensors to determine if differences in species, …

Market Coverage, Franchise Ownership, And Outlet Survival, Jingbo Zhang

Graduate Theses and Dissertations

This dissertation investigates the relationships between market coverage, franchise ownership, and franchise outlet survival rate.

In the first essay, I develop a spatial market coverage measure by integrating geocodes of outlets across five fast-food franchise systems. This spatial market coverage builds upon one navigation system algorithm by utilizing geographic coordinates. This measure can be applied by entrepreneurs to examine their geographic coverage and address issues of market oversaturation and lack of coverage.

In the second essay, I extend the spatial market coverage and examine how this spatial market coverage and franchise ownerships affect franchise outlet survival rate, which has not …

Development Of A Reference Design For A Cyber-Physical System, Nicholas Paul Blair

Graduate Theses and Dissertations

The purpose of this thesis is to develop a reference design to assist in the selection of security practices in power electronics design. A prototype will be developed from this reference design for evaluation. This evaluation will include a brief cost/benefit analysis to gauge the efficacy of implementing each layer of security throughout the power electronics design process. This thesis will also describe the obstacles and effectiveness of integrating a Trusted Platform Module (TPM) into a cyber-hardened grid-connected device. The TPM device is a secured crypto processor that assists in generating, storing, and restricting the use of cryptographic keys. The …

Nutritional Strategies For Feeding Broiler Breeders On Hen And Progeny Performance, Antonio Beitia

Graduate Theses and Dissertations

Over the last 60 plus years, broiler breeders have been under an incredible amount of genetic pressure. This genetic pressure comes from the continually increasing consumer demand for poultry products. The objective of this dissertation is to understand the effects of different nutritional and management practices on broiler breeder’s performance. The first series of experiments investigate the impact of broilerization on hen and early progeny performance. Broilerization is a process only used by genetic companies. The results from these experiments showed the adverse effects of broilerization on chick quality and hen performance. Follow up trials were performed to determine the …

Effect Of Predictor Dependence On Variable Selection For Linear And Log-Linear Regression, Apu Chandra Das

Graduate Theses and Dissertations

We propose a Bayesian approach to the Dirichlet-Multinomial (DM) regression model, which uses horseshoe, Laplace, and horseshoe plus priors for shrinkage and selection. The Dirichlet-Multinomial model can be used to find the significant association between a set of available covariates and taxa for a microbiome sample. We incorporate the covariates in a log-linear regression framework. We design a simulation study to make a comparison among the performance of the three shrinkage priors in terms of estimation accuracy and the ability to detect true signals. Our results have clearly separated the performance of the three priors and indicated that the horseshoe …

Performance Evaluation Of Four Arkansas Table Grape Cultivars Grown On Three Trellis Systems Under High Tunnels At Two Locations In Arkansas., Jose Hernandez

Graduate Theses and Dissertations

Grapevines (Vitis vinifera L.) are one of the most important horticultural crops world-wide. In the southern U.S. region, hot and humid climate accompanied by high pest pressure requires high levels of labor and pesticide inputs, making open field table grape production unsustainable. Previous research at University of Arkansas has demonstrated that table grape production under high tunnels (HTs) is a viable option to overcome biotic and abiotic challenges in the region. This project evaluated two HTs established in Arkansas. In the spring of 2014, at Fayetteville, three table grape cultivars (Faith, Gratitude, and Jupiter) were established in an 8 x …

Phenotypic And Genotypic Studies In The Peach [Prunus Persica (L.) Batsch] And Muscadine Grape (Vitis Rotundifolia Michx.), Jennifer Anne Lewter

Graduate Theses and Dissertations

Peach: Peaches [Prunus persica (L.) Batsch] are routinely chilled to increase shelf-life. Exposure to temperatures of 5° C for two weeks can induce chilling injury (CI) symptoms, including flesh mealiness (or wooliness) and a lack of juiciness. Phenotypic data were collected on seven biparental F1 peach populations maintained at the University of Arkansas Fruit Research Station. A genome wide association study (GWAS) was performed using TASSEL 5 which identified four quantitative trait loci (QTLs) associated with expressible juice, four QTLs for mealiness, five QTLs for soluble solids, and three QTLs for fruit weight. Exploiting these genetic markers could help breeders …

Study On New Sampling Plans And Optimal Integration With Proactive Maintenance In Production Systems, Sinan Obaidat

Graduate Theses and Dissertations

Sampling plans are statistical process control (SPC) tools used mainly in production processes. They are employed to control processes by monitoring the quality of produced products and alerting for necessary adjustments or maintenance. Sampling is used when an undesirable change (shift) in a process is unobservable and needs time to discover. Basically, the shift occurs when an assignable cause affects the process. Wrong setups, defective raw materials, degraded components are examples of assignable causes. The assignable cause causes a variable (or attribute) quality characteristic to shift from the desired state to an undesired state.

The main concern of sampling is …

Auditor Information Spillovers And Company Operating Performance: Evidence From Targeted Auditor Switches, Tyler Kleppe

Graduate Theses and Dissertations

In this study, I examine whether companies realize operational benefits from making “targeted auditor switches” (i.e., engaging a new auditor recently dismissed by a competitor company). While prior work provides evidence consistent with companies perceiving that auditor information spillovers are costly, there is sparse extant evidence as to whether auditors actually do transfer operational information across companies. I find that companies that switch to a competitor’s former auditor realize significant subsequent improvements in operating performance, and I provide evidence that the association between targeted auditor switches and improvements in operating performance varies predictably with several across- and within-market factors. In …

Sensitivity Of Enlisttm And Roundup Ready Xtend® Technologies To Auxin Herbicides And Comparison Of Resistance To Susceptible Cotton And Soybean Cultivars, James Rose

Graduate Theses and Dissertations

Increases in weed resistance have led to the development of new herbicide-resistant crop technologies, namely the Roundup Ready Xtend® and EnlistTM weed control systems. These new technologies provide resistance to applications of the synthetic auxins dicamba or 2,4-D, respectively, in traited cotton or soybean. It is unknown if there is any resistance to other herbicides within the synthetic auxin group (WSSA Group 4) in these traited crops. Experiments were conducted with auxin herbicides representing all five families within WSSA Group 4. Herbicides were applied either preemergence (PRE) or postemergence (POST) relative to the crop in a single application. Applications were …

Visualizing Interdisciplinary Collaborations Within Exercise Science: A Pilot Study, Elizabeth Bjornsen

Graduate Theses and Dissertations

Exercise science is a growing field with sub-disciplines exploring various aspects of physical activity. Diverse perspectives allow the field to answer complex research questions, but little is known about the collaborative nature of exercise science today. Research practices have implications on undergraduate curriculum, likely incorporating experiential knowledge into course subject matter and providing diverse experiences for students entering the workforce. Therefore, the purpose of the pilot study is to visualize and quantify interdisciplinary collaborations within exercise science. Journal citation analysis and an adaptation of social networking theory were utilized to examine collaborative practices of exercise science faculty at the University …

Drinking To Cope: Effects Of Anxiety On Generation Of Self-Regulation Strategies, Lauren Hurd

Graduate Theses and Dissertations

This study sought to utilize motivational and self-regulatory processes, specifically the principle of emotional transfer (PET), to elucidate mechanisms underlying the transition from casual alcohol use to dependence in young adults with elevated anxiety. Utilizing a script-driven imagery procedure, the proposed study examined the effects of manipulated state anxiety on 1) the amount, content, and commitment to freely generated anxiety reduction strategies, and 2) the level of craving for alcohol. Young adult college students (N = 69; ages 18-24; 76.8% women) were randomly assigned to either the high (n = 35) or low (n = 34) anxiety condition. After script …

Rejection Sensitivity And Social Support As Predictors Of Peer Victimization Among Youth With Psychiatric Illness, Katherine C. Hyde

Graduate Theses and Dissertations

In this study, I examined whether rejection sensitivity and perceptions of social support predicted concurrent peer victimization in a sample of adolescents with psychiatric illness. Participants included 43 adolescents, aged 12-18 with diverse psychiatric diagnoses, who were recruited from a summer residential treatment program. Participants completed measures of peer victimization, perceptions of social support, and rejection sensitivity. Participants also completed the global victimization item in the Revised Olweus Bully/Victim Questionnaire, which allowed for comparison of rates of peer victimization across studies (Solberg & Olweus, 2003). Results replicate and extend previous research that indicates adolescents with psychiatric illness experience high rates …

The Use Of Speech-Generating Devices For Preschoolers With Autism Spectrum Disorder, Jessica Miller

Graduate Theses and Dissertations

The first of the following articles provides a review of the literature related to vocalizations among individuals with autism spectrum disorder (ASD) who use augmentative and alternative communication (AAC) systems, with special attention paid to speech-generating devices (SGD). After providing an overview of ASD, evidence-based practices (EBP), and AAC types and a brief history, this review evaluates studies that collected data on vocalizations in SGD-users, including both those that targeted vocalizations as a dependent variable and those that measured vocalizations as a collateral effect without directly targeting it. The goal of this review is to evaluate whether SGD use may …

“Deserting The Broad And Easy Way”: Southern Methodist Women, The Social Gospel, And The New Deal State, 1909-1939, Chelsea Hodge

Graduate Theses and Dissertations

Over the course of three decades, white southern Methodist women took on issues of labor and poverty through their national women’s organization, the Woman’s Missionary Council (WMC). Between 1909 and 1939, the WMC focused their work on five groups of people they viewed as in need of their help: women, children, black southerners, immigrants, and rural people. Motivated by the Social Gospel and an intense belief that their faith led them to effect real change in the American South, the WMC intervened in people’s lives, pursuing reform that could at times be maternalistic and condescending but at other times radical …

Children's Use Of Accent As A Cue For Cooperative Potential, Rachel Stevens

Graduate Theses and Dissertations

In recent years, several studies have shown that 5- and 6-year-old children make social judgments based on accent, consistently displaying a social preference for individuals who speak with a native accent. One theory hypothesizes that this preference to favor individuals who speak like us stems from our evolutionary history, during which accent and other language variations would have been strong, salient cues to group membership, and thus, cues to ones likelihood of cooperative behavior. The current study aimed to test this theory by determining if 5- and 6-year-old children use accent to make judgments about an individual’s cooperative potential. Participants …

Assessing Differential Item Functioning In The Perceived Stress Scale, Nana Amma Berko Asamoah

Graduate Theses and Dissertations

When an item on a test functions differently for subgroups of respondents with respect to an exogenous variable (or covariate) after conditioning on the latent variable of interest, the item is said to exhibit Differential Item Functioning (DIF). The 10-item Perceived Stress Scale (PSS10) is administered to respondents via MTurk to quantify “perceived stress” and identify if items on the scale function differently for specific subgroups defined by age, sex, race, marital status, number of children, employment status and social media usage.

The purpose of this study was to compare traditional DIF detection approaches (Mantel-Haenszel, logistic regression, likelihood ratio test …

Learning Networks With Categorical Data Using Distance Correlation, And A Novel Graph-Based Multivariate Test, Jian Tinker

Graduate Theses and Dissertations

We study the use of distance correlation for statistical inference on categorical data, especially the induction of probability networks. Szekely et al. first defined distance correlation for continuous variables in [42], and Zhang translated the concept into the categorical setting in [57] by defining dCor(X,Y) for categorical variables X = (x1,...,xI) and Y = (y1,...,yJ) where P(X=xi)=[pi]i and P(Y=yi)=[pi]j with the formula [Please open the document]

Part I of the dissertation covers the background we need to understand this formula, and prepares us to analyze the properties and performance of its applications.

Part II then presents the main results of …

Decision-Making And Hydraulic Fracturing: The Case Of Local Policy Elites And The General Public In Arkansas And Oregon, Clayton Creed Tumlison

Graduate Theses and Dissertations

This dissertation examines the ways in which cultural value predispositions impact decision-making associated with hydraulic fracturing (fracking) among both local policy elites and the general public in Arkansas and Oregon. First, I examine the mediating role of (dis)trust in information provided by three groups associated with the fracking debate – the energy industry, environmental groups, and the government – in shaping benefit-risk perceptions associated with fracking, and compare this process between a sample of local policy elites and the general public in Arkansas and Oregon. Findings indicate that perceptions of trustworthiness are shaped by cultural value predispositions which, in turn, …

Conducted Emi Mitigation In Power Converters Using Active Emi Filters, Balaji Narayanasamy

Graduate Theses and Dissertations

Wide bandgap devices enable high power density power converters. Despite the advantages of increased switching frequency, the passive components are still a major bottleneck towards enabling high power density. Among the passive components in the converter, the passive EMI filters are unavoidable to ensure compliance with conducted EMI standards. Active EMI filters help reduce the volume of the passive components and have been around for three decades now. Firstly, this work presents a summary of all the different active EMI filters based on the type of noise-sensing, noise-processing, the type of active circuits used and the type of control methods. …

Investigation Of The Structural, Electronic, And Thermoelectric Properties Of Mono- Chalcogenides, Aida Sheibani

Graduate Theses and Dissertations

The structural, electronic, and thermoelectric properties of GeTe are studied using density functional theory and Boltzmann transport equations. This material has a rhombohedral crystal structure in ambient temperature with a ferroelectric behavior due to lack of inversion symmetry. This study suggests that the presence of asymmetry in GeTe can lead to an improvement in the thermoelectric properties of this material. In addition, studies on introducing Group III, IV, and V dopants to GeSe show that while these impurities can improve the power factor and decrease the lattice thermal conductivity, they cannot enhance the figure of merit.

The Shallow End Of The Deep South: Civil Rights Activism In Arkansas, 1865-1970, Sarah Riva

Graduate Theses and Dissertations

On April 7, 1968, Governor Winthrop Rockefeller claimed that “Arkansas today stands at the threshold of leading the nation...for a better America,” The Republican Arkansas Governor spoke on the steps of the state capitol at a memorial for the beloved civil rights leader Martin Luther King, Jr. who had been assassinated three days earlier. Rockefeller’s claim that Arkansas could lead the nation came just two years after the Student Nonviolent Coordinating Committee (SNCC) formally ended its work in the state to improve racial equality. Their efforts had seen widespread acceptance of integrated public facilities, increased voter registration and more meaningful …

Effect Of The Prospect Of Transport On Captive Tiger Behavior And Fecal Cortisol In Naïve And Experienced Tigers, Callan Lichtenwalter

Graduate Theses and Dissertations

With close to 5,000 captive tigers in the United States, it is vital to ensure that these tigers are receiving adequate welfare whether they are in an accredited facility, or privately owned. The goal of this study was to assess whether captive tigers at a rescue facility with experience being transported outside of the facility would respond differently to the presentation of their transport vehicle than their naïve counterparts who had only been transported within the facility. The behavior of 5 naïve and 7 experienced tigers (n = 12) located at Turpentine Creek Wildlife Refuge in Eureka Springs, Arkansas was …

The Impacts Of Incarceration On The Wellbeing Of Family Members Of African American Males Who Experience The U.S Prison System: A Phenomenological Study, Tremaine N. Leslie

Graduate Theses and Dissertations

African Americans encounter a high rate of imprisonment, and the social, economic, mental and other effects of imprisonment are extended to their families and communities (Roberts, 2004). In addition to separating individuals from their families and communities, incarceration maximizes the probability for fractured relationships, fragmented communities, and encumbers the public service systems (DeHart, Shapiro & Clone, 2018).Therefore, the purpose of this phenomenological inquiry was to explore the mental health effects of incarceration on the family members of African American males who experience the U.S prison system.

The theoretical framework utilized for this study was the critical race theory (CRT) immersed …